CN209851305U

CN209851305U - Liquid accurate weighing device for concrete mixing plant

Info

Publication number: CN209851305U
Application number: CN201920444030.XU
Authority: CN
Inventors: 黄娟娟; 程雷雷; 张启云; 梁志鹏
Original assignee: Zhengzhou Concrete Zhijie Hydraulic Machinery Co Ltd
Current assignee: Zhengzhou Concrete Zhijie Hydraulic Machinery Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2019-12-27
Anticipated expiration: 2029-04-03

Abstract

The utility model relates to a concrete mixing equipment technical field that adds water, concretely relates to accurate weighing device of liquid for concrete mixing plant, including the liquid storage pool, industry weigher and the control unit, the liquid storage pool is connected with all to be equipped with the solenoid valve on two discharging pipes of a thick thin and two discharging pipes, the weighing hopper of industry weigher passes through weighing module and installs on the support body, solenoid valve and weighing module all are connected with the control unit, the control unit control solenoid closes thick discharging pipe in order to reduce the liquid input in the weighing hopper when the liquid amount in the weighing hopper is close the target value, liquid gets into the weighing hopper through thin discharging pipe and makes the weighing hopper measure more accurately, avoid weighing hopper flow in the unit interval too big influence liquid measurement accuracy.

Description

Liquid accurate weighing device for concrete mixing plant

Technical Field

The utility model relates to a concrete mixing equipment technical field that adds water, concretely relates to accurate weighing device of liquid for concrete mixing plant.

Background

The dry-mixed mortar is also called cement mixed mortar, and refers to a granular or powdery material formed by physically mixing dry-screened aggregate, an inorganic cementing material, an additive and the like according to a certain proportion, and the granular or powdery material can be directly used after being mixed with water, so that the construction in the building industry is greatly facilitated. The industrial construction materials such as concrete, dry-mixed mortar and the like need to meet certain proportion requirements during stirring, in the mechanized production and processing process, water or other required liquid is added after the amount of the raw materials is determined generally, the existing mode is that a water storage tank adds water into a metering hopper through a pipeline, water supply is stopped when the required weight is reached, but the time for batching is short, the flow rate of the pipeline in unit time is large, so that the batching has large deviation, the building materials are difficult to reach the optimal proportioning state, the labor amount of manual batching is large, and the efficiency is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a liquid accurate weighing device, liquid storage pool are through the ejection of compact of first discharging pipe and second discharging pipe, and two discharging pipe are thick one thin and all are equipped with the solenoid valve, and discharging pipe mouth below is the industry weigher, and the break-make of two discharging pipes of the weighing module control of the control unit according to industry weigher, and the method that has relatively can be more accurate weighs liquid, improves the batching effect.

The utility model provides a solution to the above problems provides a liquid accurate weighing device for concrete mixing plant, including liquid storage pool, industry weigher and the control unit, the liquid storage pool is connected with first discharging pipe and second discharging pipe, and the internal pipe diameter of first discharging pipe is thicker than the internal pipe diameter of second discharging pipe, all is equipped with the solenoid valve on first discharging pipe and the second discharging pipe; the industrial metering scale comprises a frame body, a metering hopper and a weighing module, wherein the metering hopper is installed on the frame body through the weighing module, the metering hopper is positioned below the discharge ends of a first discharge pipe and a second discharge pipe, the upper end of the metering hopper is provided with a material receiving opening, the lower end of the metering hopper is connected with a discharge pipe, and the discharge pipe is provided with a switch valve; the control unit is connected with the weighing module to acquire the weight of liquid borne by the metering hopper, and is respectively connected with the two electromagnetic valves and the switch valve to control the on-off of the first discharging pipe, the second discharging pipe and the feeding pipe.

As a further proposal of the liquid accurate weighing device for the concrete mixing plant, the first discharging pipe parameter is DN80, and the second discharging pipe parameter is DN 50.

As a further proposal of the liquid accurate weighing device for the concrete mixing plant, a digital display screen is arranged on the frame body of the industrial metering scale, and the digital display screen is connected with the weighing module to display the real-time weight of the liquid in the metering hopper.

Advantageous effects

For building batching, the liquid storage tank is generally an impounding tank, the pipe orifices of a first discharging pipe with a larger pipe diameter and a second discharging pipe with a smaller pipe diameter are both arranged towards a metering hopper, electromagnetic valves are arranged on the two discharging pipes, the metering hopper is arranged on a frame body through a weighing module, the electromagnetic valves and the weighing module are both connected with a control unit, the control unit is a single chip microcomputer, the control unit is connected with the weighing module and is used for collecting real-time water quantity in the metering hopper, a required water quantity value is preset to the control unit, the first discharging pipe and the second discharging pipe simultaneously supply water to the metering hopper, when the water quantity in the metering hopper is close to a preset value, the control unit controls the electromagnetic valve of the first discharging pipe to be closed, only the second discharging pipe with a smaller pipe diameter is reserved for supplying water, when the water quantity in the metering hopper reaches the preset value, the control, an accurate weighing of the amount of water or liquid is achieved.

Drawings

FIG. 1 is a schematic structural diagram of a liquid precision weighing device of the present invention;

the labels in the figure are: 1. liquid storage pool, 2, first discharging pipe, 3, second discharging pipe, 4, solenoid valve, 5, support body, 6, weighing hopper, 7, weighing module, 8, discharge tube, 9, ooff valve.

Detailed Description

As shown in the figure: a liquid accurate weighing device for a concrete mixing plant comprises a liquid storage tank 1, an industrial weighing scale and a control unit, wherein the industrial weighing scale comprises a frame body 5, a weighing hopper 6 and a weighing module 7, the weighing hopper 6 is a container with a large opening at the upper end and a discharge pipe 8 connected with the lower end, the weighing hopper 6 is installed on the frame body through the weighing module 7, the weighing module 7 can adopt a sensor with a function structure similar to that of an SSB type weighing sensor, and a proper model is selected according to the actual production scale; the liquid storage pool 1 is generally arranged above an industrial metering scale, a first discharging pipe 2 and a second discharging pipe 3 are connected to the side wall close to the bottom end, the first discharging pipe can adopt a metal pipe with the parameter of DN80, the second discharging pipe can adopt a pipe with the parameter of DN50, the first discharging pipe 2 and the second discharging pipe 3 can adopt other specifications, the inner pipe diameter of the first discharging pipe 2 is larger than that of the second discharging pipe 3, the discharging ends of the first discharging pipe 2 and the second discharging pipe 3 face the top opening of the metering hopper 6, the pipe walls of the first discharging pipe 2 and the second discharging pipe 3 are provided with electromagnetic valves 4, the two electromagnetic valves 4 are connected with a control unit, the control unit is further connected with a switch valve 9 on a discharging pipe 8 at the bottom of the metering hopper 6, the control unit can adopt a single chip microcomputer, and the control unit is further connected with a digital display screen arranged on.

Through predetermineeing the liquid volume that will weigh in the control unit, first discharging pipe 2 and second discharging pipe 3 are opened simultaneously when configuration liquid, the control unit passes through weighing module 7 and confirms the liquid volume in the weighing hopper 6, when the liquid volume is close to the target value, solenoid valve 4 on the first discharging pipe 2 of control unit control is closed, only leave thinner second discharging pipe 3 and link up, reduce the inlet velocity of weighing hopper 6, solenoid valve 4 of control unit control second discharging pipe 3 is closed when the liquid volume reachs the default, the batching precision can be improved greatly to this kind of setting relatively with current mode, and need not artifical too much participation, the real-time weight in the weighing hopper 6 can be realized to the digital display screen on the support body 5.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.

Claims

1. The utility model provides a liquid accurate weighing device for concrete mixing plant which characterized in that: the device comprises a liquid storage tank (1), an industrial metering scale and a control unit, wherein the liquid storage tank (1) is connected with a first discharging pipe (2) and a second discharging pipe (3), the inner pipe diameter of the first discharging pipe (2) is thicker than that of the second discharging pipe (3), and electromagnetic valves (4) are arranged on the first discharging pipe (2) and the second discharging pipe (3); the industrial metering scale comprises a frame body (5), a metering hopper (6) and a weighing module (7), wherein the metering hopper (6) is installed on the frame body (5) through the weighing module (7), the metering hopper (6) is positioned below the discharge ends of a first discharge pipe (2) and a second discharge pipe (3), a material receiving opening is formed in the upper end of the metering hopper (6), a discharge pipe (8) is connected to the lower end of the metering hopper, and a switch valve (9) is arranged on the discharge pipe (8); the control unit is connected with the weighing module (7) to collect the weight of liquid borne by the metering hopper (6), and is connected with the two electromagnetic valves (4) and the switch valve (9) respectively to control the on-off of the first discharging pipe (2), the second discharging pipe (3) and the feeding pipe.

2. A device for the precision weighing of liquids for concrete mixing plants according to claim 1, characterized in that: the parameter of the first discharge pipe (2) is DN80, and the parameter of the second discharge pipe (3) is DN 50.

3. A device for the precision weighing of liquids for concrete mixing plants according to claim 1, characterized in that: the industrial metering scale is characterized in that a digital display screen is arranged on a frame body (5) of the industrial metering scale and is connected with a weighing module (7) to display the real-time weight of liquid in a metering hopper (6).