A waterproof concrete quantitative premixing device

Abstract

The present invention relates to a waterproof concrete quantitative premixing device, which includes a lime silo and a screw conveyor. A quick discharge port and a precise discharge port are provided at the bottom of the lime silo. The screw conveyor includes a central shaft, a first spiral blade and a second spiral blade. In the present invention, two discharge ports are provided at both ends of the bottom of the lime silo. The spiral blades of the screw conveyor are composed of an inner and an outer connected first and second spiral blades. When rotating forward, the two spiral blades rotate together, and the working surface of the entire spiral blade is large, which can push more materials and can achieve rapid feeding in the initial stage of feeding. When the central shaft rotates reversely, only the first spiral blade rotates to transport materials. At this time, the second spiral blade does not rotate, and the working surface of the spiral blade is reduced, and less materials can be pushed, enabling precise feeding.

Description

Technical Field

[0001] The present invention belongs to the field of concrete production and processing equipment, and particularly relates to a waterproof concrete quantitative premixing device. Background Art

[0002] Waterproof concrete is a kind of concrete with high impermeability performance and meeting the waterproof requirements.

[0003] The impermeability grade of waterproof concrete is determined according to the ratio of its maximum acting head to the minimum wall thickness of the building. The construction requirements of waterproof concrete include uniform pouring, avoiding segregation, sufficient vibration, strengthening moist curing, and strictly controlling the water-cement ratio.

[0004] At present, some quantitative feeding methods of waterproof concrete on the market are not accurate enough, or have high precision but complex structures and high production costs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a waterproof concrete quantitative premixing device with a simple structure and accurate cement quantification.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A waterproof concrete quantitative premixing device includes a lime silo and an auger disposed at the bottom side inside the lime silo. A quick discharge port and an accurate discharge port are provided at the bottom of the lime silo.

[0008] The auger includes a central shaft, a first spiral blade disposed on the central shaft, and a second spiral blade disposed outside the first spiral blade. When the first spiral blade rotates forward, it drives the second spiral blade to rotate together, and when it rotates backward, it does not drive the second spiral blade to rotate. The quick discharge port and the accurate discharge port are respectively located at both ends of the bottom of the lime silo. When the first spiral blade rotates forward, the material is discharged from the quick discharge port, and when it rotates backward, it is discharged from the accurate discharge port.

[0009] Further, the spiral directions and pitches of the first spiral blade and the second spiral blade correspond to each other, and the second spiral blade is connected to the outer edge of the first spiral blade.

[0010] Further, a first connecting plate is provided on the outer edge of the first spiral blade, and a second connecting plate corresponding to the first connecting plate is provided on the inner edge of the second spiral blade. The first connecting plate and the second connecting plate are in contact with each other, and a ratchet tooth clamping structure is provided between the first and second connecting plates.

[0011] Further, in the ratchet engaging structure, there are an installation groove provided on the first connecting plate, a mating groove provided on the second connecting plate, and a clamping block provided in the installation groove. The top surface of the clamping block is inclined, one end of which is flush with the first connecting plate, and the other end protrudes from the first connecting plate. When the first spiral blade rotates forward, the clamping block cooperates with the mating groove to drive the second spiral blade to rotate together.

[0012] Further, the installation groove is T-shaped, and the part of the clamping block located inside the installation groove is also correspondingly T-shaped.

[0013] Further, the clamping block is slidably installed in the installation groove, and a spring is provided in the installation groove and below the clamping block.

[0014] Further, the lime silo is installed on the weighing device.

[0015] Further, a premixing device is provided below the lime silo.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention is provided with two discharge ports at both ends of the bottom of the lime silo. The spiral blades of the auger are composed of an inner and outer connected first and second spiral blades. When rotating forward, the two spiral blades rotate together. The acting surface of the entire spiral blade is large, and more materials can be pushed, enabling rapid feeding at the initial stage of feeding. When the central shaft rotates in reverse, only the first spiral blade rotates to transport materials, and at this time, the second spiral blade does not rotate, and the acting surface of the spiral blade is reduced, and less materials can be pushed, enabling precise feeding. Through the weighing device at the bottom, the overall weight of the lime silo is monitored in real time, and precise feeding of lime can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic diagram of two discharge ports of the present invention;

[0020] Figure 3 is a schematic structural diagram of the auger of the present invention;

[0021] Figure 4 is a schematic diagram of the cooperation between the first and second connecting plates of the present invention;

[0022] Figure 5 is a schematic structural diagram of the ratchet engaging structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] As shown in the attached Figures 1-5As shown in the figure, the present invention provides a waterproof concrete quantitative premixing device, including a weighing device, a lime silo 1 arranged on the weighing device, a screw conveyor 2 arranged at the bottom side inside the lime silo 1, and a quick discharge port 3 and a precise discharge port 4 arranged at the bottom of the lime silo 1 and located at both ends of the screw conveyor 2. A premixing device is arranged below the quick discharge port 3 and the precise discharge port 4. The present invention has no special requirements for the premixing device. There are a large number of premixing devices in the prior art, and the prior art can be directly adopted as long as premixing can be achieved.

[0024] The screw conveyor 2 includes a central shaft 6, a first spiral blade 7 arranged on the central shaft 6, and a second spiral blade 8 installed on the outer edge of the first spiral blade 7. The first spiral blade 7 and the second spiral blade 8 are connected by a ratchet engaging structure. When the first spiral blade 7 rotates forward, it can drive the second spiral blade 8 to rotate together, and the material is discharged from the quick discharge port 3. When it rotates backward, it does not drive the second spiral blade 8 to rotate. At this time, the material is discharged from the precise discharge port 4.

[0025] The spiral directions and pitches of the first spiral blade 7 and the second spiral blade 8 are the same, and the inner edge of the second spiral blade 8 corresponds to the outer edge of the first spiral blade 7. After being installed in place, the first and second spiral blades are combined into one to form a complete spiral blade.

[0026] A first connecting plate 13 is arranged on the outer edge of the first spiral blade 7, and a second connecting plate 12 corresponding to the first connecting plate 13 is arranged on the inner edge of the second spiral blade 8. The first and second connecting plates are in contact with each other, and the ratchet engaging structure is arranged on the contact surface of the first and second connecting plates.

[0027] Specifically, the ratchet engaging structure includes an installation groove 9 arranged on the first connecting plate 13, a matching groove 14 arranged on the second connecting plate 12, and a clamping block 10 arranged in the installation groove 9. The top surface of the clamping block 10 is an inclined surface, one end is flush with the first connecting plate 13, and the other end protrudes from the surface of the second connecting plate 13, and is used for clamping and matching with the matching groove 14 so that when the first spiral blade 7 rotates forward, it drives the second spiral blade 8 to rotate together.

[0028] The installation groove 9 is T-shaped, and the part of the clamping block 10 located in the installation groove 9 also corresponds to be T-shaped. A spring 11 is arranged between the bottom of the clamping block 10 and the installation groove 9. A number of corresponding ratchet engaging structures are provided. When the central shaft rotates forward, the clamping block 10 can smoothly be inserted into the matching groove 14, thereby driving the second spiral blade to rotate together. When the central shaft rotates backward, the clamping block 10 is squeezed and slides into the interior of the installation groove 9, and does not engage with the matching groove 14 to transmit torque, and thus does not drive the second spiral blade to rotate. At this time, only the first spiral blade 7 rotates, and the material is discharged from the precise discharge port 4.

[0029] Preferably, in order to prevent additional materials from being discharged from the precise discharge port 4 when the central shaft rotates reversely, an outward extension bin 5 is provided on one side of the bottom of the lime bin, and the precise discharge port 4 is located at the bottom of the extension bin 5.

[0030] When the central shaft of the auger of the present invention rotates forward, the first and second spiral blades rotate together, and the discharge amount of the material at the rapid discharge port 3 is relatively large, which is suitable for initial feeding and can quickly add the material to slightly less than the required weight. At this time, when the central shaft rotates reversely, only the first fast spiral blade rotates, and the discharge amount of the material at the precise discharge port 4 is relatively small, which is suitable for precise feeding. The two spiral blades are used in combination to achieve rapid and precise addition of the material.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quantitative premixing device for waterproof concrete, characterized in that it includes a lime silo (1), a screw conveyor (2) arranged at the bottom side inside the lime silo (1), and a quick discharge port (3) and an accurate discharge port (4) are arranged at the bottom of the lime silo (1); The screw conveyor (2) includes a central shaft (6), a first spiral blade (7) arranged on the central shaft (6), and a second spiral blade (8) arranged outside the first spiral blade (7). When the first spiral blade (7) rotates forward, it drives the second spiral blade (8) to rotate together, and when it rotates backward, it does not drive the second spiral blade (8) to rotate. The quick discharge port (3) and the accurate discharge port (4) are respectively located at both ends of the bottom of the lime silo (1). When the first spiral blade (7) rotates forward, the material is discharged from the quick discharge port (3), and when it rotates backward, it is discharged from the accurate discharge port (4).

2. A quantitative premixing device for waterproof concrete according to claim 1, characterized in that The spiral directions and pitches of the first spiral blade (7) and the second spiral blade (8) correspond to each other, and the second spiral blade (8) is connected to the outer edge of the first spiral blade (7).

3. A quantitative premixing device for waterproof concrete according to claim 1 or 2, characterized in that A first connecting plate (13) is arranged on the outer edge of the first spiral blade (7), a second connecting plate (12) corresponding to the first connecting plate (13) is arranged on the inner edge of the second spiral blade (8), the first connecting plate (13) and the second connecting plate (12) are in contact with each other, and a ratchet engaging structure is arranged between the first and second connecting plates.

4. A quantitative premixing device for waterproof concrete according to claim 3, characterized in that The ratchet engaging structure includes a mounting groove (9) arranged on the first connecting plate (13), a mating groove (14) arranged on the second connecting plate (12), and a clamping block (10) arranged in the mounting groove (9). The top surface of the clamping block (10) is inclined, one end of which is flush with the first connecting plate (13), and the other end protrudes from the first connecting plate (13). When the first spiral blade (7) rotates forward, the clamping block (10) cooperates with the mating groove (14) to drive the second spiral blade (8) to rotate together.

5. A quantitative premixing device for waterproof concrete according to claim 4, characterized in that The mounting groove (9) is T-shaped, and the part of the clamping block (10) located inside the mounting groove (9) is also T-shaped correspondingly.

6. A quantitative premixing device for waterproof concrete according to claim 4 or 5, characterized in that The clamping block (10) is slidably installed in the mounting groove (9), and a spring (11) is arranged in the mounting groove (9) and below the clamping block (10).

7. A quantitative premixing device for waterproof concrete according to claim 1, characterized in that The lime silo (1) is installed on a weighing device.

8. A quantitative premixing device for waterproof concrete according to claim 1, characterized in that A premixing device is arranged below the lime silo (1).

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