阅读说明：本技术 一种自动送浆系统 (Automatic send thick liquid system ) 是由 孙仲彬 郭万红 韩伟 肖恩尚 张裕文 杨振中 刘铸 杜晓麟 杨雨 刘松富 唐玉书 于 2020-08-19 设计创作，主要内容包括：本申请公开了一种自动送浆系统,包括用于安装并容纳系统各工作单元的系统框架和设置于系统框架内的控制室,所述控制室内安装有用于控制各工作单元协同工作的主控单元,以及用于接收和发送指令的无线信号收发模块；所述工作单元具体包括：进浆单元,储浆单元,送浆单元和冲洗单元。该装置结构设计紧凑,将多种设备和传感器计集于一体,实现了全自动化送浆的过程。利用现代传感器技术,将密度传感器、超声液位检测计、流量计等装置集与一体,通过PLC程序进行统一控制,以满足自动送浆系统的各种功能。(The application discloses an automatic slurry feeding system, which comprises a system framework and a control room, wherein the system framework is used for installing and accommodating all working units of the system, the control room is arranged in the system framework, a main control unit used for controlling all the working units to work cooperatively is arranged in the control room, and a wireless signal transceiving module used for receiving and sending instructions is arranged in the control room; the working unit specifically comprises: the device comprises a pulp inlet unit, a pulp storage unit, a pulp conveying unit and a washing unit. The device has compact structural design, integrates various devices and a sensor meter, and realizes the full-automatic slurry feeding process. The device integrates a density sensor, an ultrasonic liquid level detector, a flowmeter and the like into a whole by utilizing the modern sensor technology, and is uniformly controlled by a PLC program so as to meet various functions of an automatic slurry feeding system.)

1. An automatic slurry feeding system comprises a system frame (1) for installing and accommodating all working units of the system and a control room arranged in the system frame (1), wherein a main control unit for controlling all the working units to work cooperatively and a wireless signal transceiving module for receiving and sending instructions are installed in the control room; the method is characterized in that: the working unit specifically comprises:

the pulp inlet unit is used for sending the primary pulp from the pulping station into a pulp storage barrel (8) for temporary storage and comprises a pulp inlet pipe (4) for communicating with a pulping system, a densimeter (5) for detecting the density of the primary pulp, a three-way valve (6) for respectively communicating the densimeter (5) with the pulp storage barrel (8) and a pulp discharge pipe (7) for discharging unqualified primary pulp;

the pulp storage unit is used for temporarily storing the primary pulp conveyed by the pulp inlet unit and comprises a pulp storage barrel (8) communicated with the pulp inlet unit;

the slurry feeding unit is used for feeding the primary slurry in the slurry storage barrel (8) to the slurry mixing station, and comprises a slurry feeding pipe communicated with the bottom of the slurry storage barrel (8), a slurry feeding valve (11), a flow meter (12), a slurry feeding pump (13) and a slurry feeding valve group (14) which are sequentially arranged on the slurry feeding pipe along the slurry feeding direction in an airtight manner, and are communicated with the slurry mixing station through pipelines;

the washing unit is used for washing the residual slurry in the slurry feeding pipe completely, and comprises a water tank (15) and a washing pipe, wherein the water tank is used for storing water, one end of the washing pipe is communicated with the water tank (15), the other end of the washing pipe is provided with a first branch pipe and a second branch pipe which are communicated with each other, the first branch pipe is provided with a washing valve (16) and a free end, the slurry feeding pipe is communicated with the slurry feeding valve (11) and the flowmeter (12), and the free end of the second branch pipe is provided with a water replenishing valve (17).

2. An automatic slurry feeding system according to claim 1, characterized in that: the pulp storage unit also comprises a stirring device which is arranged on the pulp storage barrel (8) and used for keeping the uniformity of the primary pulp, wherein the stirring device comprises a driver, a speed reducer and a stirrer, the driver and the speed reducer are in driving connection, and the stirrer penetrates through the top of the pulp storage barrel (8) and extends to the bottom of the pulp storage barrel (8); the agitator has and stores up thick liquid bucket (8) bottom and inside wall contact and be used for scraping off the doctor-bar mechanism that adheres to the magma.

3. An automatic slurry feeding system according to claim 1 or 2, characterized in that: and an ultrasonic liquid level sensor (10) which is in communication connection with the main control unit and is used for detecting the level of primary pulp in the pulp storage barrel (8) is installed on the pulp storage barrel (8).

4. An automatic slurry feeding system according to claim 1, characterized in that: an upper water level sensor (20) and a lower water level sensor (21) which are respectively used for detecting the maximum value and the minimum value of the water level are arranged in the water tank (15).

5. An automatic slurry feeding system according to claim 1, characterized in that: the water tank (15) is arranged at the top of the system frame (1), and a mounting hole for accommodating the end head of the water inlet end of the flushing pipe is formed in the position, close to the bottom, of a longitudinal supporting upright column contained in the system frame (1).

6. An automatic slurry feeding system according to claim 1 or 5, characterized in that: the system frame (1) comprises longitudinal supporting columns and horizontal beams which are transversely and longitudinally arranged, and a box skin or an openable and closable box side wall (3) is arranged between any adjacent or oppositely arranged longitudinal supporting column and horizontal beam.

7. An automatic slurry feeding system according to claim 6, characterized in that: the box side wall (3) is arranged between two adjacent longitudinal supporting upright columns, the box side wall (3) is composed of two horizontally hinged side wall units, and two ends of the hinged opposite side of the side wall unit close to one side of the top of the system frame (1) are hinged with the two adjacent longitudinal supporting upright columns; two ends of the hinged opposite side of the side wall unit close to one side of the bottom of the system frame (1) are in sliding clamping connection with the two adjacent longitudinal supporting upright columns; any side wall unit is also provided with a bolt mechanism for fixing the side wall (3) of the box in a closed or open state.

8. An automatic slurry feeding system according to claim 1, characterized in that: the slurry feeding device is characterized by further comprising an air compressor (19), wherein the three-way valve (6), the slurry feeding valve (11), the slurry feeding valve group (14), the flushing valve (16) and the water replenishing valve (17) are all pneumatic control valves driven by the air compressor (19).

9. An automatic slurry feeding system according to claim 1, characterized in that: the slurry feeding valve group (14) comprises a plurality of pneumatic control valves which are communicated with the slurry distribution station in parallel.

Technical Field

The invention relates to the field of water conservancy and hydropower foundation treatment instrument systems, in particular to the field of infrastructure grouting and slurry conveying systems, and particularly relates to an automatic slurry conveying system.

Background

In the foundation treatment construction type of modern water conservancy and hydropower, foundation grouting engineering occupies a large proportion. The grouting engineering construction process can be roughly divided into two procedures of drilling and grouting, and particularly comprises the following main procedures: preparation of slurry, slurry storage, slurry transportation, secondary slurry preparation, slurry injection into the stratum and quality control in the processes.

With the higher requirements of the market on the foundation treatment construction quality and the control precision, the existing related equipment can not meet the modern construction requirements. Most of the existing slurry conveying equipment is simple and crude, has no sensor for detecting slurry density and flow, and the operation mode depends on manual operation, so that the construction requirements can not be met, and the existing slurry conveying equipment has the following defects:

A. the existing slurry conveying equipment has no slurry quality detection means, and the quality (slurry density) of the slurry cannot be ensured. B. The existing pulp feeding equipment has no measuring means of pulp amount, can not realize distribution according to needs, is easy to cause more or less feeding, can overflow when more feeding is carried out, and causes pulp amount waste and environmental pollution; the less feeding can not meet the requirement of the grouting machine set for using the grout. C. The existing slurry feeding equipment has no automatic pipeline flushing function, and the pipeline is easily blocked due to the attachment and drying of the slurry.

The existing pulp feeding equipment has no automatic cooperation function with the previous procedure and the subsequent procedure, and is easy to cause work nest or wrong operation only by means of manual communication. Due to the control of cost and geographical environmental factors of a construction site, a slurry feeding process is that one slurry feeding pump is usually responsible for slurry feeding of a plurality of slurry distribution machine sets, when one machine set sends a slurry feeding request through an interphone, an operator starts to manually feed slurry to the corresponding machine set after receiving a signal, and the machine sets are switched back and forth, sometimes the slurry is mistakenly fed, and the slurry is wasted. This control is essentially a semi-mechanized level of operation. And the communication in one time delays the slurry conveying time, consumes a large amount of manpower and physical strength and cannot efficiently finish the slurry conveying.

At present, companies on the market have already proposed the idea of automatic slurry feeding, but no specific description and related equipment is provided for how to realize the automatic slurry feeding from the integration and modularization perspective by integrating various existing sensors.

In summary, under the condition of analyzing the defects of the existing equipment, an automatic slurry conveying system is researched, and the purpose is to solve the slurry conveying problem, realize full automation of the slurry conveying system, improve the slurry conveying quality and promote the automation degree of basic processing construction equipment.

Disclosure of Invention

The slurry feeding device aims to solve the problems that in the prior art, slurry feeding precision is low, efficiency is low, a slurry feeding pipeline is not easy to clean and the pipeline is easy to block due to low automation degree in the slurry feeding process. To the not enough that prior art exists, the application provides an automatic send thick liquid system, can be pertinence solve above-mentioned existing technical problem, reach following technological effect:

1. the density of the slurry sent by the slurry sending system is detected firstly and then received, so that the density of the slurry sent by the system is ensured to meet the requirement of preset slurry parameters, and the problem of construction quality caused by the fact that unqualified raw slurry sent by a slurry making system participates in a grouting process is fundamentally avoided.

2. The one-to-many accurate slurry feeding is realized by adopting the slurry feeding valve group, and the system is coordinated and controlled, so that the manual butt joint, intervention and feedback in the traditional slurry feeding process are avoided, and the slurry feeding efficiency is improved.

3. Set up and wash the unit, the system can automated inspection water tank water level carry out the moisturizing, washes, has avoided the thick liquid to remain the pipeline jam problem that leads to, simultaneously, has also ensured the reliability of follow-up thick liquid density of sending thick liquid.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

an automatic slurry feeding system comprises a system framework for installing and accommodating all working units of the system and a control room arranged in the system framework, wherein a main control unit for controlling all the working units to work cooperatively and a wireless signal transceiving module for receiving and sending instructions are installed in the control room; the working unit specifically comprises:

the pulp inlet unit is used for sending the primary pulp from the pulping station into the pulp storage barrel for temporary storage, and comprises a pulp inlet pipe used for communicating with the pulping system, a densimeter for detecting the density of the primary pulp, and a three-way valve used for respectively communicating the densimeter with the pulp storage barrel and connecting a pulp discharge pipe discharging unqualified primary pulp.

The pulp inlet unit is used for receiving the raw pulp of the pulping station, firstly, the raw pulp from the pulping station passes through the pulp inlet pipe, and after passing through the densimeter, the densimeter reads the real-time density of the raw pulp and sends the real-time density to the main control unit. At the moment, if the actual density read by the densimeter belongs to the density range preset by the main control unit, opening a three-way valve to communicate the densimeter with the pulp storage barrel; on the contrary, if the actual density read by the densimeter does not belong to the density range preset by the main control unit, and the density of the raw stock does not meet the slurry feeding requirement, the three-way valve is opened to communicate the densimeter with the slurry discarding pipe, so that the partial raw stock which does not meet the requirement cannot enter the slurry feeding system. Compared with the existing manual cooperative operation, the method has the advantages that the unqualified slurry is removed, the unqualified slurry caused by the pulping process of the pulping system or the pollution of a pipeline between the pulping system and the slurry feeding station is prevented from participating in the grouting process, and the clamping stagnation or unnecessary pollution of the subsequent slurry preparation and grouting process caused by the quality problem of the primary slurry is avoided. Because the existing pulping system and the pulp feeding station adopt manual cooperative operation, when the pulp feeding station sends pulp feeding requirements to the pulping system, the pulping system can feed the specified amount of pulp to the pulp feeding station until the staff in the pulp feeding station feeds back sufficient information, and then the pulping system stops. In the actual situation of manual operation, the density of the primary pulp slurry configured by the default pulping system is qualified, and a double-pass mechanism and the function of rejecting unqualified slurry are not provided.

The pulp storage unit is used for temporarily storing the primary pulp conveyed by the pulp inlet unit and comprises a pulp storage barrel communicated with the pulp inlet unit; the function of the stock tank is to temporarily preserve the virgin stock.

The pulp feeding unit is used for feeding the primary pulp in the pulp storage barrel to the pulp distribution station and comprises a pulp feeding pipe communicated with the bottom of the pulp storage barrel, a pulp feeding valve, a flowmeter, a pulp feeding pump and a pulp feeding valve group, wherein the pulp feeding valve, the flowmeter and the pulp feeding pump are sequentially arranged on the pulp feeding pipe in an airtight mode along a pulp feeding direction, and the pulp feeding valve group is used for being communicated with the pulp distribution station through a pipeline.

When slurry is required to be delivered, the slurry delivery valve is in an open state, the raw slurry in the slurry storage barrel sequentially passes through the slurry delivery valve, the flowmeter and the slurry delivery pump through the slurry delivery pipe, and finally the raw slurry is delivered to a downstream slurry distribution station through the slurry delivery valve group under the driving action of the slurry delivery pump; the flowmeter is used for measuring the volume of the raw slurry passing through the flowmeter, so that the accurate control of the slurry feeding volume is realized, and meanwhile, the problem of leakage of the slurry feeding pipeline can be judged by combining the slurry feeding real-time data and the slurry receiving real-time data of the slurry distribution station.

The washing unit is used for washing the residual slurry in the slurry feeding pipe completely, and comprises a water tank and a washing pipe, wherein the water tank and the washing pipe are used for storing water, one end of the washing pipe is communicated with the water tank, the other end of the washing pipe is provided with a first branch pipe and a second branch pipe which are communicated with each other, the first branch pipe is provided with a washing valve and a free end, the slurry feeding pipe between the slurry feeding valve and the flowmeter is communicated with the free end of the second branch pipe, and the free end of the second branch pipe is provided with a. The flushing unit is the functional unit originally invented by the application, the arrangement of the pipeline is compact and effective, the space configuration of the whole slurry conveying system can be optimized, and the compactness and the use continuity of the pipeline are realized. The working principle is as follows: when the slurry feeding time or the slurry feeding times reach the flushing time or times preset by the system, the main control unit sends a signal to the flushing valve, the flushing valve is opened, the valve corresponding to the slurry feeding pipeline to be cleaned in the slurry feeding group is opened, and other valves are closed; clear water from the water tank enters a slurry feeding pipeline to be washed, the flow and the time of washing are executed according to the preset flow of the main control unit, the flow control mode is realized by adjusting the rotating speed of the slurry feeding pump, and after the washing time reaches the preset time, the main control unit sends a stop instruction to the slurry feeding pump to close the slurry feeding pump and the washing valve.

As a preferred scheme of the application, the pulp storage unit further comprises a stirring device which is arranged on the pulp storage barrel and used for keeping the uniformity of the primary pulp, wherein the stirring device comprises a driver, a speed reducer and a stirrer, the driver is in driving connection with the speed reducer, and the stirrer penetrates through the top of the pulp storage barrel and extends to the bottom of the pulp storage barrel; the agitator has and stores up the interior bottom of thick liquid bucket and the contact of inside wall and is used for scraping off the doctor-bar mechanism that adheres to the magma. The driver is preferably a motor to facilitate the stirring speed adjustment. The effect of agitating unit lies in keeping the homogeneous state of magma, avoids leading to the magma to subside the separation because of the working hour overlength, leads to sending thick liquid inequality or local solidification jam.

Preferably, install on the storage thick liquid bucket with main control unit communication connection and be used for detecting the supersound level sensor of the interior magma liquid level of storage thick liquid bucket. The working principle is as follows: the ultrasonic liquid level sensor has two working modes, one is to alarm according to the preset liquid level range, namely when the actual primary pulp liquid level detected by the ultrasonic liquid level sensor is lower than the preset lowest primary pulp liquid level of the system, a pulp inlet application is sent to the pulping system through the main control unit; when the actual raw stock liquid level detected by the ultrasonic liquid level sensor is higher than the preset highest raw stock liquid level of the system, sending a request for stopping stock feeding to the pulping system through the main control unit; the stock storage barrel is enabled to guarantee that the stock level of the temporary storage stock is always in a normal state at the working state, and the abnormal supply interruption condition can not occur.

Preferably, an upper water level sensor and a lower water level sensor for detecting the maximum value and the minimum value of the water level are arranged in the water tank respectively. The working principle is as follows: when the lower water level sensor detects that the water level in the water tank reaches the minimum value, the main control unit sends an instruction to the water replenishing valve, so that the water replenishing valve is opened, and clean water enters the water tank through the water replenishing valve to be replenished. When the water level continuously rises until the upper water level sensor detects that the water level reaches the maximum water level, a closing instruction is sent to the water replenishing valve through the main control unit, and the normal water level in the water tank is ensured to be kept all the time through circulation.

Preferably, the system frame comprises longitudinal supporting columns and horizontal cross beams which are transversely and longitudinally arranged, and a box skin or an openable and closable box side wall is arranged between any adjacent or opposite longitudinal supporting columns and horizontal cross beams. The box side wall is arranged between two adjacent longitudinal supporting upright columns and consists of two horizontally hinged side wall units, and two ends of the hinged opposite side of the side wall unit close to one side of the top of the system frame are hinged with the two adjacent longitudinal supporting upright columns; two ends of the hinged opposite side of the side wall unit close to one side of the bottom of the system frame are in sliding clamping connection with the two adjacent longitudinal supporting upright columns; and a bolt mechanism for fixing the side wall of the box in a closed or opened state is also arranged on any side wall unit.

Further preferably, the slurry feeding system further comprises an air compressor, and the three-way valve, the slurry feeding valve group, the flushing valve and the water supplementing valve are all pneumatic control valves driven by the air compressor. The slurry feeding valve group comprises a plurality of pneumatic control valves which are communicated with the slurry distribution station in parallel.

Preferably, the water tank is arranged at the top of the system frame, and a mounting hole for accommodating the water inlet end head of the flushing pipe is arranged at a position, close to the bottom, of a longitudinal supporting upright column contained in the system frame. The technical effect that the end head of the water inlet end of the flushing pipe is arranged and brought on the longitudinal supporting upright post is adopted: no matter what state the side walls of the tank of the system frame are in, such as opening or closing, the water replenishing of the water tank is not influenced, so that the whole slurry feeding system has practical compatibility with engineering project environment.

Advantageous effects

Firstly, the slurry feeding system detects the density of slurry fed and then receives the slurry, so that the density of the slurry fed by the system meets the requirement of preset slurry parameters, and the problem of construction quality caused by the fact that unqualified raw slurry fed by the pulping system participates in a grouting process is fundamentally avoided.

Secondly, the 'one-to-many' accurate slurry feeding is realized by adopting the slurry feeding valve group, and the system is coordinately controlled, so that the manual butt joint, intervention and feedback in the traditional slurry feeding process are avoided, and the slurry feeding efficiency is improved.

Moreover, this system has set up the unit of washing, and the system can automated inspection water tank water level carry out the moisturizing and wash, has avoided the thick liquid to remain the pipeline jam problem that leads to, simultaneously, has also ensured the reliability of follow-up thick liquid density of sending the thick liquid.

And the device has compact structural design, integrates various devices and a sensor meter into a whole, and realizes a full-automatic slurry conveying process. The device integrates a density sensor, an ultrasonic liquid level detector, a flowmeter and the like into a whole by utilizing the modern sensor technology, and is uniformly controlled by a PLC program so as to meet various functions of an automatic slurry feeding system. The automatic coordination working function of the four procedures of pulping → slurry feeding → slurry mixing → grouting is realized, unmanned operation is realized, and the operation efficiency of the whole process is improved.

The system comprises the multi-path automatic slurry feeding control device, so that one device can be simultaneously responsible for automatically feeding the slurry to a plurality of units, the automatic directional slurry feeding is realized, the communication time is saved compared with the manual slurry feeding, and the slurry feeding efficiency is improved. And meanwhile, the device also comprises a metering device for the slurry feeding amount, so that quantitative distribution is realized according to requirements, and slurry waste and environmental pollution are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic perspective view of the present slurry delivery system;

FIG. 2 is a schematic view of the present slurry delivery system with the top sidewall housing shielding removed;

FIG. 3 is an enlarged view of the structure of region A in FIG. 2;

FIG. 4 is another perspective view of FIG. 1;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a sectional view taken along the line A-A in FIG. 5;

FIG. 7 is a flow chart of the slurry feeding process of the system.

In the figure: 1-a system framework; 2-a control room; 3-tank side walls; 4-slurry inlet pipe; 5-a densimeter; 6-three-way valve; 7-slurry discarding pipe; 8-pulp storage barrel; 9-a stirring device; 10-ultrasonic level sensor; 11-slurry feeding valve; 12-a flow meter; 13-a slurry pump; 14-slurry feeding valve group; 15-a water tank; 16-a flush valve; 17-a water replenishing valve; 18-mounting holes; 19-an air compressor; 20-upper water level sensor; 21-lower water level sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The preferred embodiment:

an automatic slurry feeding system shown in fig. 1-6 in the specification comprises a system frame 1 for installing and accommodating all working units of the system and a control room arranged in the system frame 1, wherein a main control unit for controlling all the working units to work cooperatively and a wireless signal transceiving module for receiving and sending instructions are installed in the control room; the working unit specifically comprises:

the pulp inlet unit is used for sending the primary pulp from the pulping station into the pulp storage barrel 8 for temporary storage, and comprises a pulp inlet pipe 4 used for communicating with the pulping system, a densimeter 5 used for detecting the density of the primary pulp, and a three-way valve 6 used for respectively communicating the densimeter 5 and the pulp storage barrel 8 and connecting a pulp discharge pipe 7 for discharging unqualified primary pulp.

The pulp storage unit is used for temporarily storing the primary pulp conveyed by the pulp inlet unit and comprises a pulp storage barrel 8 communicated with the pulp inlet unit; the pulp storage barrel 8 is used for temporarily storing the primary pulp. The pulp storage barrel 8 is provided with an ultrasonic liquid level sensor 10 which is in communication connection with the main control unit and is used for detecting the level of the primary pulp in the pulp storage barrel 8. The working principle is as follows: the ultrasonic liquid level sensor 10 has two working modes, one is to alarm according to the liquid level preset range, namely when the actual primary pulp liquid level detected by the ultrasonic liquid level sensor 10 is lower than the lowest primary pulp liquid level preset by the system, a pulp feeding application is sent to the pulping system through the main control unit; when the actual raw stock liquid level detected by the ultrasonic liquid level sensor 10 is higher than the preset highest raw stock liquid level of the system, sending a request for stopping stock feeding to the pulping system through the main control unit; make and store up thick liquid bucket 8 and all guarantee that the magma liquid level of keeping in is in normal condition all the time at operating condition constantly, the condition of unusual confession that is absolutely can not appear.

And the pulp feeding unit is used for feeding the primary pulp in the pulp storage barrel 8 to the pulp distribution station, and comprises a pulp feeding pipe communicated with the bottom of the pulp storage barrel 8, a pulp feeding valve 11, a flowmeter 12, a pulp feeding pump 13 and a pulp feeding valve group 14, wherein the pulp feeding valve 11, the flowmeter 12 and the pulp feeding pump are sequentially arranged on the pulp feeding pipe in an airtight mode along the pulp feeding direction, and the pulp feeding valve group is used for being communicated with the pulp distribution station through a pipeline.

The washing unit is used for washing the residual slurry in the slurry feeding pipe completely, and comprises a water tank 15 and a washing pipe, wherein the water tank is used for storing water, one end of the washing pipe is communicated with the water tank 15, the other end of the washing pipe is provided with a first branch pipe and a second branch pipe which are communicated with each other, the first branch pipe is provided with a washing valve 16 and a free end, the slurry feeding pipe between the slurry feeding valve 11 and the flow meter 12 is communicated, and the free end of the second branch pipe is provided with a water replenishing valve 17.

The working process and the working principle are briefly described as follows:

before explaining the working principle of the system, the background of the system and the functions and complete flow of the upstream and downstream systems will be briefly described. Foundation grouting engineering is very common in water conservancy and hydropower foundation treatment, and its main process links include in proper order: preparation of grout → storage of grout → transportation of grout → secondary preparation of grout → grouting into the formation. Wherein the content of the first and second substances,

preparation of slurry: the preparation of the slurry is finished by a pulping station or a pulping system, and the high-concentration slurry is prepared by mixing the solidified powder of cement and the like with a specific label with water in a specific ratio, and is commonly called as primary slurry.

Storage and transport of the slurry: in the prior art, slurry is conveyed by a slurry conveying pipeline through coordination and manual operation by workers of upstream and downstream nodes needing to convey slurry; the technical scheme provided by the embodiment is the process for replacing the existing manual slurry conveying process.

Secondary slurry preparation and slurry filling: the slurry preparation and grouting are generally completed by equipment of a slurry preparation station and a grouting station, in the prior art, the mainstream adopts manual operation for grouting, and the control of grouting pressure and flow still depends on the experience and judgment of operators; the slurry preparation is mainly characterized in that the secondary slurry preparation density is controlled by controlling the mixing ratio of the primary slurry and the water by means of equipment.

After understanding the flow of the basic grouting project, how the automatic slurry feeding system provided in this embodiment implements accurate automatic slurry feeding will be described in detail below.

The flow shown in the attached figure 7 in the specification is as follows:

firstly, the slurry feeding system is started, whether the self-checking is normal or not is detected, and whether the primary slurry liquid level in the slurry storage barrel 8 reaches the lower limit or not is detected by the ultrasonic liquid level sensor 10:

if the lower limit is reached, the main control unit sends an application signal or an instruction requesting to send pulp to the pulping system or the pulping station through the wireless signal transceiver module, and the pulping system feeds back a signal whether to send pulp or not according to an operation mechanism in the pulping system and the actual pulping condition after receiving the signal or the instruction.

Firstly, if the pulping system does not have the pulp feeding condition at the moment, after the pulp feeding system receives a feedback signal of not feeding pulp, the action of requesting pulp feeding application is continued until the pulp feeding application is achieved. It should be noted that, in this flow, the pulping system is only in the relationship with the upstream and downstream nodes of the present pulp feeding system, and therefore, this embodiment is incorporated for explanation so as to better understand the technical solution content of this application, but the judgment on whether to feed pulp inside the pulping system is not the content that the present pulp feeding system requires protection and needs public description, and here, it is specifically explained that the pulping system is technically and mechanically unrelated to the pulp feeding system described in this embodiment, and no further description is given below.

Secondly, if the pulping system has the pulp feeding condition, the primary pulp is fed, firstly enters a pulp feeding unit of the pulp feeding system, and the pulp feeding unit detects whether the density of the fed primary pulp is qualified:

if not, directly discarding the slurry, and returning to the slurry sending request sending process;

if the raw pulp is qualified, storing the raw pulp in a pulp storage barrel 8 of a pulp storage unit; and when the ultrasonic liquid level sensor 10 detects that the liquid level of the slurry reaches the preset upper limit, the main control unit sends a signal or instruction for stopping slurry feeding to the slurry making system through the wireless signal transceiver module, and the slurry making system stops slurry feeding.

At the moment, the main control unit judges whether a slurry feeding request from the slurry mixing station is received through the wireless signal transceiving module, if so, slurry is fed to the corresponding slurry mixing station sending the request; if not, detecting whether the slurry feeding system has a slurry feeding pipeline to reach the slurry feeding time or the slurry feeding frequency which is preset by the system and needs to be washed. The slurry feeding time and the slurry feeding times are independently checked, and a flushing program can be triggered when one of the slurry feeding time and the slurry feeding times is met.

Meanwhile, the main control unit receives a grouting ending instruction sent by the wireless signal transceiver module at any time, and when the grouting ending instruction is received, the main control unit automatically starts the flushing and slurry storage barrel 8 and the corresponding slurry conveying pipeline and ends a complete slurry conveying program; and if the grouting ending instruction is not received after the flow is completed, returning to the initial state. It is worth mentioning that: the grouting ending instruction in this section refers to an ending instruction of the whole grouting construction, that is, the ending of the whole grouting, slurry feeding, slurry mixing and grouting process described above, which naturally includes the ending of the grouting process.

In the above flow, the work flow related to each work unit is specifically as follows:

the pulp inlet unit is used for receiving the raw pulp of the pulping station, firstly, the raw pulp from the pulping station passes through the pulp inlet pipe 4, passes through the densimeter 5, and then the densimeter 5 reads the real-time density of the raw pulp and sends the real-time density to the main control unit. At the moment, if the actual density read by the densimeter 5 belongs to the density range preset by the main control unit, the three-way valve 6 is opened to communicate the densimeter 5 with the pulp storage barrel 8; on the contrary, if the actual density read by the densimeter 5 does not belong to the density range preset by the main control unit, which indicates that the raw pulp density does not meet the pulp feeding requirement, the three-way valve 6 is opened to communicate the densimeter 5 with the pulp discharge pipe 7, so that the partial raw pulp which does not meet the requirement cannot enter the pulp feeding system. Compared with the existing manual cooperative operation, the method has the advantages that the unqualified slurry is removed, the unqualified slurry caused by the pulping process of the pulping system or the pollution of a pipeline between the pulping system and the slurry feeding station is prevented from participating in the grouting process, and the clamping stagnation or unnecessary pollution of the subsequent slurry preparation and grouting process caused by the quality problem of the primary slurry is avoided. Because the existing pulping system and the pulp feeding station adopt manual cooperative operation, when the pulp feeding station sends pulp feeding requirements to the pulping system, the pulping system can feed the specified amount of pulp to the pulp feeding station until the staff in the pulp feeding station feeds back sufficient information, and then the pulping system stops. In the actual situation of manual operation, the density of the primary pulp slurry configured by the default pulping system is qualified, and a double-pass mechanism and the function of rejecting unqualified slurry are not provided.

When slurry is required to be delivered, the slurry delivery valve 11 is in an open state, the raw slurry in the slurry storage barrel 8 sequentially passes through the slurry delivery valve 11, the flowmeter 12 and the slurry delivery pump 13 through the slurry delivery pipe, and finally the raw slurry is delivered to a downstream slurry distribution station through the slurry delivery valve group 14 under the driving action of the slurry delivery pump 13; the flowmeter 12 is used for measuring the amount of raw slurry passing through the flowmeter 12, so that the accurate control of the slurry feeding amount is realized, and meanwhile, the problem of leakage of a slurry feeding pipeline can be judged by combining the slurry feeding real-time data and the slurry receiving real-time data of the slurry distribution station.

The flushing unit is the functional unit originally invented by the application, the arrangement of the pipeline is compact and effective, the space configuration of the whole slurry conveying system can be optimized, and the compactness and the use continuity of the pipeline are realized. The working principle is as follows: when the slurry feeding time or the slurry feeding frequency reaches the flushing time or frequency preset by the system, the main control unit sends a signal to the flushing valve 16, the flushing valve 16 is opened, the valve corresponding to the slurry feeding pipeline to be cleaned in the slurry feeding group 14 is opened, and other valves are closed; clear water from the water tank 15 enters a slurry feeding pipeline for washing, the flow and the time of washing are executed according to the preset flow of the main control unit, the flow control mode is realized by adjusting the rotating speed of the slurry feeding pump 13, and after the washing time reaches the preset time, the main control unit sends a stop instruction to the slurry feeding pump 13 and closes the slurry feeding pump 13 and the washing valve 16.

As a preferred scheme of the present application, the slurry storage unit further comprises a stirring device arranged on the slurry storage barrel 8 and used for maintaining uniformity of the slurry, wherein the stirring device comprises a driver in driving connection, a speed reducer and a stirrer extending to the bottom of the slurry storage barrel 8 through the top of the slurry storage barrel 8; the agitator has and stores up the interior bottom of thick liquid bucket 8 and the contact of inside wall is used for scraping off the doctor-bar mechanism that adheres to the magma. The driver is preferably a motor to facilitate the stirring speed adjustment. The effect of agitating unit lies in keeping the homogeneous state of magma, avoids leading to the magma to subside the separation because of the working hour overlength, leads to sending thick liquid inequality or local solidification jam.

In this embodiment, an upper water level sensor 20 and a lower water level sensor 21 for detecting the maximum value and the minimum value of the water level are disposed in the water tank 15.

The working principle is as follows: when the lower water level sensor 21 detects that the water level in the water tank 15 reaches the minimum value, the main control unit sends an instruction to the water replenishing valve 17, so that the water replenishing valve 17 is opened, and clean water enters the water tank 15 through the water replenishing valve 17 to be replenished. When the water level continuously rises until the upper water level sensor 20 detects that the water level reaches the maximum water level, a closing instruction is sent to the water replenishing valve 17 through the main control unit, and the normal water level in the water tank 15 is ensured to be always kept through circulation.

In this embodiment, for the construction of the convenience project equipment, that is, the quick development of the construction progress, the system frame 1 includes the longitudinal support columns and the horizontal beams which adopt the horizontal and longitudinal arrangement, and a box skin or an openable and closable box side wall 3 which is used for sealing is arranged between any adjacent or relatively arranged longitudinal support column and horizontal beam. The box side wall 3 is arranged between two adjacent longitudinal supporting upright columns, the box side wall 3 consists of two horizontally hinged side wall units, and two ends of the hinged opposite side of the side wall unit close to one side of the top of the system frame 1 are hinged with the two adjacent longitudinal supporting upright columns; two ends of the hinged opposite side of the side wall unit close to one side of the bottom of the system frame 1 are in sliding clamping connection with two adjacent longitudinal supporting upright columns; any side wall unit is also provided with a bolt mechanism for fixing the side wall 3 of the box in a closed or open state.

For the practicality that improves this embodiment, reduce the fault rate and to the dependence of electric power, increase the adaptability of system to abominable field environment, this send thick liquid system still includes air compressor machine 19, three-way valve 6, send thick liquid valve 11, send thick liquid valves 14, flush valve 16 and moisturizing valve 17 all adopt air compressor machine 19 driven pneumatic control valve. The slurry feeding valve group 14 comprises a plurality of pneumatic control valves which are communicated with the slurry distribution station in parallel.

In this embodiment, the water tank 15 is disposed at the top of the system frame 1, and a mounting hole for accommodating the water inlet end of the flushing pipe is disposed at a position near the bottom of a longitudinal supporting upright included in the system frame 1. The technical effect that the end head of the water inlet end of the flushing pipe is arranged and brought on the longitudinal supporting upright post is adopted: whatever the state of the tank side walls of the system frame 1, such as open or closed, does not affect the refilling of the water tank 15, so that the entire slurry delivery system has practical compatibility with the engineering project environment.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.