CN216578470U

CN216578470U - Liquid raw material conveying and metering assembly and self-compacting concrete preparation equipment

Info

Publication number: CN216578470U
Application number: CN202122584854.7U
Authority: CN
Inventors: 陈琦; 曾晓辉; 钟可; 杨兵忠; 彭昊; 尹华拓; 刘石坚; 曾志平; 刘建芬; 龙广成
Original assignee: Zhuzhou Sibaorui Intelligent Equipment Co ltd
Current assignee: Zhuzhou Sibaorui Intelligent Equipment Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-24
Anticipated expiration: 2031-10-26

Abstract

The utility model provides a liquid raw material conveying and metering component and self-compacting concrete preparation equipment, and relates to the technical field of concrete equipment, wherein the liquid raw material conveying and metering component comprises: the liquid material box can contain liquid material, a fluid conveying pipeline and a return pipeline. Wherein the first end of the fluid delivery pipeline is connected to the liquid raw material tank, and the second end of the fluid delivery pipeline is connected to the concrete mixer; the fluid conveying pipeline is sequentially provided with a pump, a flowmeter and a first switch valve from a first end to a second end. The first end of the return pipeline is connected with the liquid raw material tank, and the second end of the return pipeline is connected to a fluid conveying pipeline between the flowmeter and the first switch valve; and a second switch valve is arranged on the return pipeline. This application can realize adding liquid raw materials to the agitator ration through flow measurement ware and the linkage of first ooff valve, the higher simple structure of efficiency.

Description

Liquid raw material conveying and metering assembly and self-compacting concrete preparation equipment

Technical Field

The application relates to the technical field of concrete equipment, in particular to a liquid raw material conveying and metering assembly and self-compacting concrete preparation equipment.

Background

Self-compacting concrete refers to concrete which can flow and be compact under the action of self gravity, can completely fill a template even if compact steel bars exist, and simultaneously obtains good homogeneity without additional vibration. The self-compacting concrete is widely applied to tunnel construction. The tunnel space is limited, and the requirement on the overall dimension of construction equipment is high. Chinese patent 201810105836.6 discloses a self-compacting concrete mixer is carried to finished product, and this finished product is carried self-compacting concrete mixer formula self-compacting concrete mixing equipment as an organic whole, with the storage, measurement, transport and the agitated vessel integration of the multiple material that self-compacting concrete needs together. In such integrated self-compacting concrete mixing equipment, raw materials need to be added into the mixer in a certain proportion, and the weighing device is used for carrying out mass measurement on various materials.

The self-compacting concrete comprises liquid raw materials, wherein the liquid raw materials comprise water, a liquid additive and the like. At present, generally adopt weighing device to measure liquid raw materials among the self-compaction concrete mixing equipment, metering efficiency is lower, and needs to occupy great volume.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will be solved lies in, to prior art's the aforesaid not enough, provides a liquid raw materials and carries measurement subassembly and self-compaction concrete preparation equipment.

The liquid raw material conveying and metering assembly comprises:

a liquid material tank capable of accommodating a liquid material;

a fluid delivery line connected at a first end to the liquid feedstock tank and at a second end to the concrete mixer; a pump, a flowmeter and a first switch valve are sequentially arranged on the fluid conveying pipeline from the first end to the second end;

a return line having a first end connected to the liquid raw material tank and a second end connected to a fluid transfer line between the flowmeter and the first on-off valve; and a second switch valve is arranged on the return pipeline.

In some aspects, the first on-off valve and/or the second on-off valve is a pneumatic ball valve.

In some technical schemes, a one-way valve is arranged on a fluid conveying pipeline between the flowmeter and the first switch valve; and the second end of the return pipeline is connected to the fluid conveying pipeline between the one-way valve and the first switch valve.

In some technical solutions, the system further comprises a controller; the controller is respectively and electrically connected with the pump, the flowmeter, the first switch valve and the second switch valve.

In some embodiments, the concrete mixer is installed at a height greater than the height of the liquid feedstock tank.

In another aspect, the present application also provides a self-compacting concrete preparation apparatus comprising the liquid raw material delivery metering assembly set forth in the above section.

The technical scheme of the application has the following technical effects: first, through flow measurement ware and first ooff valve linkage can realize adding liquid raw materials to the concrete mixing ware ration, the higher simple structure of efficiency. And secondly, a return pipeline is arranged, and the return pipeline and the fluid conveying pipeline form a liquid flowing return passage for filling the liquid raw materials in the fluid conveying pipeline before adding the liquid raw materials into the concrete mixer.

Drawings

FIG. 1 is a schematic structural view of a self-compacting concrete production apparatus according to an embodiment of the present application.

Detailed Description

The following are specific embodiments of the present application and are further described with reference to the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 1, an embodiment of the present application provides a liquid material conveying and metering assembly, including: liquid raw material tank 10, fluid delivery line L1, return line L2. The liquid material tank 10 may contain a liquid material. Fluid delivery line L1 is connected at a first end to liquid feed tank 10 and at a second end to concrete mixer 20; the fluid delivery line L1 includes a pump 30, a flow meter 40, and a first on-off valve 60 arranged in this order from the first end to the second end. A return line L2 is connected at a first end to the liquid feedstock tank 10 and at a second end to the fluid delivery line L1 between the flowmeter 40 and the first on-off valve 60; the return line L2 is provided with a second on-off valve 70.

The liquid raw material conveying and metering assembly is applied to self-compacting concrete preparation equipment, and is particularly used for storing and metering liquid raw materials such as water and liquid additives. In particular, the self-compacting concrete is concrete which can flow and compact under the action of self gravity, can completely fill a formwork even if compact reinforcing steel bars exist, and simultaneously obtains good homogeneity without additional vibration. The self-compacting concrete is prepared from raw materials including an additive, a cementing material and coarse and fine aggregates, and specifically comprises the following materials: stone, sand, cement, coal ash, liquid additive and solid additive. Wherein, the stones are coarse aggregates; sand is fine aggregate; the cement and the coal ash are powder materials. In some embodiments, the liquid admixture may be a water reducing agent. The integrated self-compacting concrete mixing plant integrates the storage, metering, conveying and mixing equipment of various materials required by the self-compacting concrete. In such integrated self-compacting concrete mixing equipment, raw materials need to be added into the mixer in a certain proportion, and various metering devices are used for carrying out quality metering on various materials. The integrated self-compacting concrete mixing device can be used for manufacturing self-compacting concrete on site.

The self-compacting concrete preparation apparatus has an apparatus housing forming an external structure. The self-compacting concrete preparation equipment is characterized in that a stirrer, a conveyor belt, a material box and a weighing device are arranged in an equipment shell. These conventional components are within the scope of the prior art and will not be described in detail herein.

The liquid material delivery metering assembly further includes a controller 80; the controller 80 is electrically connected to the pump 30, the flow meter 40, the first switching valve 60, and the second switching valve 70, respectively. The controller 80 can control the respective components and enable the respective components to be linked.

In the present embodiment, the liquid material tank 10 is used to feed liquid material to the concrete mixer 20. First, before the liquid material is injected into the concrete mixer 20, the first on-off valve 60 is closed, the second on-off valve 70 is opened, and the pump 30 is opened, and at this time, the fluid delivery line L1 and the return line L2 form a return path through which the liquid flows, and the pump 30 starts to suck the liquid material from the liquid material tank 10 and returns the liquid material to the liquid material tank 10 through the fluid delivery line L1 and the return line L2 in sequence, and this process allows the fluid delivery line L1 to be filled with the liquid material. In a second step after a predetermined time, the first on-off valve 60 is opened, the second on-off valve 70 is closed, the liquid material sucked by the pump 30 is introduced into the concrete mixer 20 through the fluid delivery line L1, and at the same time, the flow meter 40 starts to meter the volume of the liquid through the fluid delivery line L1, and the first on-off valve 60 and the pump 30 are closed when the volume of the liquid material injected into the concrete mixer 20 reaches a predetermined value. The first step fills the fluid delivery line L1 with liquid material to ensure that the volume of liquid passing through the flowmeter 40 in the second step is substantially consistent with the volume of liquid injected into the concrete mixer 20, thereby improving the accuracy of the metering.

In some embodiments, the first and/or second on-off

valves

60, 70 are pneumatic ball valves.

In some embodiments, a check valve 50 is disposed on the fluid delivery line L1 between the flow meter 40 and the first on-off valve 60; a second end of the return line L2 is connected to the fluid delivery line L1 between the check valve 50 and the first switching valve 60. The check valve 50 is used to prevent the reverse flow of the fluid in the fluid delivery line L1.

In some embodiments, the concrete mixer 20 is installed at a height greater than the height at which the liquid feedstock tank 10 is installed. In some embodiments, such an arrangement facilitates full utilization of the bottom space of the self-compacting concrete preparation apparatus.

In this application embodiment, can realize adding liquid raw materials to the concrete mixing ware ration through flow measurement ware and first ooff valve linkage, the higher simple structure of efficiency. In addition, be provided with return line among the technical scheme of this application, return line and fluid conveying pipeline constitute a liquid flow's backward flow route for make full of liquid raw materials in the fluid conveying pipeline before adding liquid raw materials in to the concrete mixing ware, improved measurement accuracy.

The embodiment of the application also provides self-compacting concrete preparation equipment, which comprises the liquid raw material conveying and metering assembly. For related contents, reference may be made to the contents of the previous part of the embodiments of the present application, which are not described herein again.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.

Claims

1. A liquid feed delivery metering assembly, comprising:

a liquid material tank (10) capable of accommodating a liquid material;

a fluid delivery line (L1) connected at a first end to the liquid feedstock tank (10) and at a second end to the concrete mixer (20); a pump (30), a flow meter (40) and a first switch valve (60) are sequentially arranged on the fluid conveying pipeline (L1) from the first end to the second end;

a return line (L2) having a first end connected to the liquid material tank (10) and a second end connected to the fluid delivery line (L1) between the flowmeter (40) and the first on-off valve (60); and a second switch valve (70) is arranged on the return pipeline (L2).

2. The liquid feedstock delivery metering assembly of claim 1, wherein the first on-off valve (60) and/or the second on-off valve (70) is a pneumatic ball valve.

3. The liquid material delivery metering assembly of claim 1, wherein a check valve (50) is provided on the fluid delivery line (L1) between the flow meter (40) and the first on-off valve (60); the second end of the return line (L2) is connected to the fluid delivery line (L1) between the check valve (50) and the first switching valve (60).

4. The liquid feed delivery metering assembly of claim 3, further comprising a controller (80); the controller (80) is electrically connected with the pump (30), the flow meter (40), the first switch valve (60) and the second switch valve (70) respectively.

5. The liquid feedstock delivery metering assembly of claim 1, wherein the concrete mixer (20) is mounted at a height greater than a height at which the liquid feedstock tank (10) is mounted.

6. A self-compacting concrete preparation apparatus, comprising: the liquid feedstock delivery metering assembly of any of claims 1-5.