Concrete screening device

Abstract

The utility model discloses a concrete screening device, and aims to solve the problems that part of raw materials are clamped in hollowed-out parts of a screen, so that the screen is blocked, manual irregular cleaning is needed, and the concrete screening device is inconvenient to use. According to the technical scheme, the concrete screening device is characterized by comprising a rack, a plurality of screening assemblies are arranged on the rack up and down, each screening assembly comprises a screen and a conveying belt, the screens are obliquely arranged from top to bottom, the lower ends of the screens are located above the conveying belts, and the hole diameters of the screens are sequentially reduced from top to bottom; side plates are arranged on the two sides of the multiple screens, vibrating motors are arranged on the side plates, and sliding rods are symmetrically arranged on the portions, above the screens, of the rack. According to the concrete screening device, the screening net is driven to vibrate through the arranged vibration motor, the blocking condition of the screening net can be relieved, when the screening net is clamped by large-particle raw materials, the raw materials clamped in the screening net are ejected out by inserting the ejector rod into the screening net, and complexity and inconvenience of manual cleaning are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete preparation technical field more specifically, it relates to a concrete screening device. BACKGROUND

[0002] Concrete is a kind of artificial stone, which is made of cementitious materials, granular aggregates (aggregate), water and, if necessary, additives and admixtures, according to certain proportions, uniform mixing, compaction, curing and hardening.

[0003] Different projects have different performance requirements for concrete, and the particle size of raw materials needs to be adjusted according to the engineering requirements to meet the specific performance requirements, which requires the use of screening device to screen the particles of raw materials, to ensure that the particle size of raw materials is reasonable and uniform, so as to improve the compactness, uniformity and adaptability of concrete.

[0004] However, the shape of raw materials is irregular, and although large particle raw materials cannot pass through the screen during screening, some of them may be stuck in the screen, causing screen jamming and affecting the normal passage of raw materials, which needs to be cleaned manually at irregular intervals, which is inconvenient to use. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a concrete screening device, which can reduce the jamming of the screen by setting the vibration motor to drive the screen to vibrate. When the screen is stuck by large particle raw materials, the top rod is inserted into the screen to eject the raw materials stuck in the screen, thereby realizing automatic cleaning of the screen and avoiding the tediousness and inconvenience of manual cleaning.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a concrete screening device, comprising a rack, a plurality of screening assemblies are arranged on the rack in an up-down manner, each of the plurality of screening assemblies comprises a screen and a conveyor belt, the screen is arranged in an inclined manner from top to bottom, and the lower end of the screen is located above the conveyor belt, the pore size of the plurality of screens decreases from top to bottom, and the two sides of each screen are provided with a side plate, a vibration motor is arranged on the side plate, a slide rod is symmetrically arranged above the screen on the rack, the two ends of the slide rod are fixedly connected with the rack, a fixed seat is slidably connected on the two slide rods, a first air cylinder is arranged on the rack to slide the fixed seat, a second air cylinder is arranged at the bottom of the fixed seat, a fixed plate is arranged on the extension end of the second air cylinder, and a plurality of top rods are arranged at the bottom of the fixed plate, which are matched with the pore size of the screen.

[0007] The utility model further sets up: the side plate is uniformly provided with a plurality of connecting blocks, the bottom of a plurality of connecting blocks all is provided with telescopic link, the lower extreme of telescopic link is provided with support block, support block is fixedly connected with rack, and support block and connecting block between fixed abutment have spring around telescopic link outside.

[0008] The utility model further sets up: the top rod is to the one end of screen cloth taper structure.

[0009] The utility model further sets up: the fixed plate is to the one side of fixed base symmetrical setting has connecting rod, and the fixed base is opened and has the through -hole of passing through connecting rod.

[0010] The utility model further sets up: the connecting rod is away from the one end of fixed plate and set up limit block, the diameter of limit block is greater than the diameter of through -hole.

[0011] The utility model further sets up: the both sides of conveyer belt all are provided with baffle.

[0012] Summarized above, the utility model has following beneficial effect:

[0013] Through setting up the vibration motor drive screen vibration, can alleviate the condition of screen blockage, when the screen is stuck by large particle raw material, through the top rod inserts the screen, and the raw material in the screen is ejected, thereby realized the automatic cleaning of screen, avoided the tedious and inconvenient of manual cleaning. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic drawing of the screening device of the utility model;

[0015] Figure 2 It is the structure schematic drawing of connecting block and support block of the utility model;

[0016] Figure 3 It is Figure 2 The enlarged schematic drawing of A of

[0017] Figure 4 It is the structure schematic drawing of fixed plate and top rod of the utility model.

[0018] In the drawing: 1, rack;2, screen;3, conveyer belt;4, side plate;5, vibration motor;6, slide rod;7, fixed base;8, fixed plate;9, top rod;10, connecting block;11, telescopic link;12, support block;13, spring;14, connecting rod;15, limit block;16, baffle. SPECIFIC IMPLEMENTATION

[0019] In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] The present application will be described in detail below with reference to the drawings.

[0023] Referring to Figures 1-4 A concrete screening device, comprising a rack 1, a plurality of screening assemblies are arranged on the rack 1 in an up-down manner, the plurality of screening assemblies each comprise a screen 2 and a conveyor belt 3, the screen 2 is arranged in an inclined manner from top to bottom, and the lower end of the screen 2 is located above the conveyor belt 3, the diameters of the plurality of screens 2 gradually decrease from top to bottom, and the two sides of each screen 2 are fixedly provided with a side plate 4, and a vibration motor 5 is fixedly arranged on the side plate 4;

[0024] The rack 1 is symmetrically provided with a slide rod 6 above the screen 2, both ends of the slide rod 6 are fixedly connected with the rack 1, and a fixed seat 7 is slidably connected on the two slide rods 6, a first air cylinder for sliding the fixed seat 7 is fixedly arranged on the rack 1, a second air cylinder is fixedly arranged on the bottom of the fixed seat 7, a fixed plate 8 is fixedly arranged on the extension end of the second air cylinder, and a plurality of jacks 9 matched with the diameters of the screens 2 are fixedly arranged on the bottom of the fixed plate 8.

[0025] A plurality of connecting blocks 10 are uniformly fixed on the side plate 4, the bottom of each connecting block 10 is fixedly provided with an extension rod 11, the lower end of the extension rod 11 is fixedly provided with a supporting block 12, the supporting block 12 is fixedly connected with the rack 1, and a spring 13 wound outside the extension rod 11 is fixedly abutted between the supporting block 12 and the connecting block 10. When the vibration motor 5 works, the side plate 4 drives the connecting block 10 and the extension rod 11 to vibrate together, the spring 13 plays a buffering and stabilizing role, so that the vibration of the screen 2 is more uniform and stable, and the noise generated by the vibration is reduced.

[0026] The end of the top rod 9 towards the screen 2 is in a conical structure, the conical structure of the top rod 9 is easier to insert into the hollow of the screen 2, reduces the risk of damage to the top rod 9, and effectively pushes out the raw materials stuck on the screen 2.

[0027] The side of the fixed plate 8 towards the fixed seat 7 is symmetrically fixed with a connecting rod 14, and the fixed seat 7 is provided with a through hole for the connecting rod 14 to pass through. The design of the connecting rod 14 and the through hole enables the fixed plate 8 to be more stably connected to the fixed seat 7, and facilitates the second cylinder to drive the fixed plate 8 to move up and down.

[0028] The end of the connecting rod 14 away from the fixed plate 8 is fixedly provided with a limiting block 15, the diameter of the limiting block 15 is greater than the diameter of the through hole, and the design of the limiting block 15 prevents the connecting rod 14 from falling off the through hole.

[0029] The two sides of the conveying belt 3 are fixedly provided with baffles 16, and the design of the baffles 16 prevents the screened raw materials from falling off from the two sides of the conveying belt 3.

[0030] Working principle: when the screening device is used, first, the first cylinder controls the fixed seat 7 and the fixed plate 8 to move to the side of the screen 2, so that the raw materials can normally fall onto the screen 2 for filtering. Under the action of gravity and the vibration motor 5, the raw materials gradually move downward and are quickly screened through the screen 2, and under the action of the vibration motor 5, the clogging of the screen 2 can be alleviated. The screened raw materials slide onto the conveying belt 3 and are sent out. When the screen 2 is stuck by large-particle raw materials, the first cylinder is started, the first cylinder drives the fixed seat 7 to move to the upper side of the screen 2, the second cylinder drives the fixed plate 8 and the top rod 9 at the bottom of the fixed plate 8 to move towards the screen 2, the top rod 9 is inserted into the hollow of the screen 2 to push out the raw materials stuck in the screen 2, the second cylinder retracts to drive the top rod 9 to exit the hollow of the screen 2, and the first cylinder continues to extend by one position, so that the fixed plate 8 and the top rod 9 move forward to clean the next hollow on the screen 2, thereby realizing automatic cleaning of the screen 2, avoiding the tediousness and inconvenience of manual cleaning, and after cleaning, the first cylinder controls the fixed seat 7 and the fixed plate 8 to return to the original position, and the raw materials can continue to be screened.

[0031] The first air cylinder, the second air cylinder and the vibration motor 5 are all realized in regulating and cooperating work through electrical connection with the controller, the control circuit of the controller can be realized through simple programming of the technical personnel in the field, the power supply also belongs to the common knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and the circuit connection in detail.

[0032] The above is only the preferred embodiment of the utility model, the protection scope of the utility model is not only limited to the above-mentioned embodiment, and all the technical schemes under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for the ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model can also be regarded as the protection scope of the utility model.

Claims

1. A concrete screening device comprising a frame (1), characterised in that: The rack (1) is provided with a plurality of screening assemblies arranged from top to bottom, each of the screening assemblies comprises a screen (2) and a conveyor belt (3), the screen (2) is arranged from top to bottom in a downward slope, and the lower end of the screen (2) is located above the conveyor belt (3), the aperture of each of the screens (2) is gradually reduced from top to bottom, and both sides of each of the screens (2) is provided with a side plate (4), the side plate (4) is provided with a vibrating motor (5), the rack (1) is symmetrically provided with a slide rod (6) above the screen (2), both ends of the slide rod (6) are fixedly connected with the rack (1), and a fixing seat (7) is slidably connected with both slide rods (6), the rack (1) is provided with a first air cylinder for sliding the fixing seat (7), the bottom of the fixing seat (7) is provided with a second air cylinder, the telescopic end of the second air cylinder is provided with a fixing plate (8), and the bottom of the fixing plate (8) is provided with a plurality of top rods (9) matched with the aperture of the screen (2).

2. A concrete screening device as claimed in claim 1, wherein: A plurality of connecting blocks (10) are uniformly arranged on the side plate (4), the bottom of each of the connecting blocks (10) is provided with a telescopic rod (11), the lower end of the telescopic rod (11) is provided with a supporting block (12), the supporting block (12) is fixedly connected with the rack (1), and the supporting block (12) and the connecting block (10) are fixedly abutted with a spring (13) wound outside the telescopic rod (11).

3. A concrete screening device as claimed in claim 1, wherein: The end of the top rod (9) towards the screen (2) is in a conical structure.

4. A concrete screening device as claimed in claim 1, wherein: The side of the fixing plate (8) towards the fixing seat (7) is symmetrically provided with a connecting rod (14), and the fixing seat (7) is provided with a through hole for the connecting rod (14) to pass through.

5. A concrete screening apparatus as claimed in claim 4, wherein: The end of the connecting rod (14) away from the fixing plate (8) is provided with a limiting block (15), and the diameter of the limiting block (15) is greater than the diameter of the through hole.

6. A concrete screening device as claimed in claim 1, wherein: Both sides of the conveyor belt (3) are provided with baffle plates (16).

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