CN102635372A - Liquid accelerating agent supplying device - Google Patents

Abstract

The invention discloses a liquid quick-setting agent supply device, which is suitable for adding liquid quick-setting agent to dry sprayed concrete, and can effectively control the amount of rebound and dust. Among them, there is a bracket above the trolley, and the liquid quick-setting agent bucket is placed on the bracket; the screw-type quantitative pump is fixed on the trolley, and is located under the liquid quick-setting agent bucket. It is composed of a frequency regulator and a screw connected to the motor. The end of the screw is provided with a discharge port, and the middle of the screw is provided with a feed port; the bottom of the liquid accelerator tank is provided with a feed pipe, and the other end of the feed pipe is connected to the feed port. A control valve is provided on the delivery pipe. The working principle is: the liquid quick-setting agent flows out of the liquid quick-setting agent barrel, the flow rate is adjusted by the control valve, and then enters the feed port of the screw-type quantitative pump, and the pumping pressure is provided by the motor. Send it to the high-pressure water pipe to complete the supply of liquid accelerator.

Description

A liquid accelerator supply device

technical field

The invention relates to a liquid accelerator supply device. the

Background technique

At present, there are two main methods of spraying concrete commonly used, namely dry mix spraying and wet mix spraying. There are many different ways to add quick-setting agent during the spraying process. Most of the dry-mixing spraying uses powdered quick-setting agent, which is directly mixed with the aggregate, and then pumped or blown to the nozzle; wet-mixing spraying is Mainly add liquid quick-setting agent, which is transported to the nozzle separately by wind pressure. The amount of accelerator has a great influence on the performance of sprayed concrete in all aspects, so it is worth further research on the effect of its addition. the

In dry-mix sprayed concrete, powdered accelerators are mainly used. There are usually three kinds of adding devices, which are divided into threaded drill type, threaded plug type and gear type according to their structure. These devices are all installed on the bottom surface of the hopper where the accelerator is stored. The powder accelerator is often not evenly mixed in the aggregate, and it is easy to solidify on the upper part and four walls of the feeding device, often causing blockage. Furthermore, the addition of powdered quick-setting agent will cause a large amount of rebound and a lot of dust during construction. There are not many devices for adding liquid accelerator in the dry mixing method. The main method is to directly add the liquid accelerator to the water pipe, use the control valve to adjust the addition amount, and use compressed air as the power to transport it to the nozzle. In such a way, the dosage of the liquid accelerator is very inaccurate and easy to block, and the continuous and uniform supply of the liquid accelerator cannot be guaranteed, and the operation and transportation are inconvenient. the

Contents of the invention

In view of the above-mentioned prior art, in order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a liquid quick-setting agent supply device, which is especially suitable for adding liquid quick-setting agent to dry sprayed concrete, which can effectively control the amount of rebound and It is mainly suitable for dry-mix shotcrete in geotechnical engineering such as tunnels, slopes, and foundation pits. the

The present invention is achieved through the following technical solutions:

A liquid accelerator supply device, comprising a liquid accelerator bucket, a trolley and a screw-type quantitative pump, wherein a bracket capable of supporting the liquid accelerator bucket is provided above the trolley, and the liquid accelerator bucket is placed on On the bracket; the screw type quantitative pump is fixed on the trolley and is located under the liquid accelerator bucket. The screw type quantitative pump is composed of a motor, a manual frequency regulator on the motor and a screw connected to the motor. There is a discharge valve at the end of the screw. There is a feeding port in the middle of the screw; a feeding pipe is provided at the bottom of the liquid accelerator barrel, and the other end of the feeding pipe is connected to the feeding port, and a control valve that can control the flow of the liquid accelerator is installed on the feeding pipe . the

The liquid quick-setting agent bucket is marked with a scale, and the reserves of the liquid quick-setting agent can be clearly seen; a feed pipe is drawn from the bottom of the tank, and a control valve is installed to control the flow of the liquid quick-setting agent. Make the liquid accelerator evenly flow into the screw pump. The liquid accelerator tank can be designed as an open, equipped with a lid so that the liquid accelerator can be added repeatedly. During construction, the lid can prevent the accelerator from being polluted. the

The trolley is a walking device, which is a conventional device in the prior art. It effectively combines the liquid quick-setting agent bucket and the screw type quantitative pump into one, and can push and walk, so that the supply of the liquid quick-setting agent becomes an independent structure. the

The screw type quantitative pump is a quantitative supply device, which is a conventional device in the prior art, and it can accurately control the amount of liquid quick-setting agent added: it is divided into ten openings in total, and there are twenty openings under ten openings. The number of revolutions, the flow rate per revolution is fixed, by adjusting the number of revolutions, the amount of liquid accelerator added can be effectively controlled. the

The liquid quick-setting agent supply device of the present invention, when in use, connects the discharge port with a high-pressure water pipe. The feed port of the quantitative pump is supplied with pumping pressure by the motor, which is pumped to the high-pressure water pipe through the screw and the discharge port to complete the supply of liquid accelerator. the

The liquid accelerator supply device of the present invention has the following advantages:

1. The device makes the liquid quick-setting agent successfully applied in the dry spraying technology. The use of the liquid quick-setting agent greatly reduces the amount of rebound and dust, improves the working environment and reduces the construction cost. the

2. The use of screw-type quantitative pumps can effectively control the amount of liquid accelerator added: the amount of accelerator added has a greater impact on the performance of shotcrete in various aspects, such as initial and final setting time, early and late strength, viscosity joint strength, creep, etc. the

3. The device makes the addition of liquid quick-setting agent an independent system, and can be easily transported; at the same time, it is small in size and does not take up too much space. the

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention. the

Fig. 2 is a structural schematic diagram of a screw quantitative pump. the

Among them, 1. Liquid accelerator tank; 2. Trolley; 3. Screw type quantitative pump; 4. Delivery pipe; 5. Control valve; 6. Outlet port; 7. Screw; 8. Inlet port; 9. , Manual frequency regulator; 10, Motor. the

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. the

A liquid quick-setting agent supply device, comprising a liquid quick-setting agent bucket 1, a trolley 2 and a screw-type quantitative pump 3, as shown in Fig. The bracket, the liquid quick-setting agent bucket 1 is placed on the bracket; the screw type quantitative pump 3 is fixed on the trolley 2, located below the liquid quick-setting agent bucket 1, and the screw type quantitative pump 3 is set on the motor 10 by the motor 10 The manual frequency regulator 9 and the screw rod 7 connected with the motor 10 are composed, as shown in Figure 2, the end of the screw rod 7 is provided with a discharge port 6, and the middle part of the screw rod 7 is provided with a feed port 8; the bottom of the liquid accelerator bucket 1 is provided with There is a feed pipe 4, and the other end of the feed pipe 4 is connected to the feed port 8, and the feed pipe 4 is provided with a control valve 5 capable of controlling the flow of the liquid accelerator. the

The liquid quick-setting agent bucket 1 is marked with a scale, and the storage capacity of the liquid quick-setting agent can be clearly seen. the

The liquid quick-setting agent tank 1 is designed to be open and equipped with a bucket cover. the

When in use, connect the discharge port 6 with the high-pressure water pipe. The working principle is: the liquid accelerator flows out from the liquid accelerator barrel 1, and the flow rate is adjusted by the control valve 5, and then enters the feed port of the screw quantitative pump 3. 8. The pumping pressure is provided by the motor 10, and it is pumped into the high-pressure water pipe through the screw 7 and the discharge port 6, so as to complete the supply of the liquid accelerator. the

Claims (3)

1. A liquid quick-setting agent supply device, characterized in that: comprise a liquid quick-setting agent bucket, a handcart and a screw-type quantitative pump, wherein a support is provided above the trolley, and the liquid quick-setting agent bucket is placed on the support; The screw-type quantitative pump is fixed on the trolley and is located under the liquid accelerator bucket. The screw-type quantitative pump is composed of a motor, a manual frequency regulator installed on the motor and a screw connected to the motor. There is a feeding port; the bottom of the liquid accelerator tank is provided with a feeding pipe, the other end of the feeding pipe is connected to the feeding port, and a control valve is installed on the feeding pipe. 2. A liquid accelerator supply device according to claim 1, characterized in that: the liquid accelerator bucket is provided with a scale. 3. A liquid accelerator supply device according to claim 1, characterized in that: the liquid accelerator tank is an open structure, and the opening is equipped with a lid.

Images