Intelligent feeding, monitoring and mixing system for cement paste

Abstract

The invention discloses an intelligent cement paste feeding, monitoring and mixing system, and relates to the technical field of building material preparation. The pulping station is used for conveying pulp to a pulp preparation barrel; a sensor is arranged in the slurry preparation barrel and is used for measuring and calculating the water-cement ratio and the weight of slurry in real time and transmitting data to a control system; the control system is used for receiving data of the sensor, comparing the data with a design value, automatically calculating a water-cement ratio which differs from the design value, and further sending an opening instruction to the water pump or the cement dry powder storage tank; when the control system detects that the weight of the slurry storage barrel is insufficient, an instruction is started, the slurry preparation barrel is opened, prepared slurry is put into the slurry storage barrel, if the slurry with the water-cement ratio meeting the standard does not exist, an instruction waiting state is started, and the grouting machine starts to discharge slurry after the standard is met. The water-cement ratio and the weight of the slurry are monitored in real time through the sensor, the water-cement ratio is accurately controlled in combination with the automatic calculation and adjustment functions of the control system, and the quality of the cement slurry is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building material preparation, and more specifically, to an intelligent feeding monitoring and slurry adjusting system for cement slurry. Background Art

[0002] In the diversion tunnel of a water conservancy project, there is an important process link, namely backfill grouting and consolidation grouting. In the grouting work, according to the specification requirements, the water-cement ratio is generally divided into multiple levels, such as 4:1, 3:1, 2:1, 1:1, 0.8:1, etc. During the grouting process, the grade of the slurry mix ratio will be adjusted in real time according to the flow rate and pressure parameters to meet the design requirements.

[0003] However, in the actual construction process, due to the limited space of the working surface and the large amount of grouting, it is impossible to prepare the slurry on-site at the working surface. Generally, centralized slurry preparation is carried out at the off-site slurry preparation station, and then the prepared cement slurry is transported to the working surface through high-pressure equipment. Generally, the slurry preparation station can only prepare the slurry according to one mix ratio. After it is sent to the working surface, the mix ratio is adjusted. Although the slurry preparation station can prepare cement slurries of various ratios, due to the long-distance transportation, it cannot meet the real-time adjustment requirements of the working surface.

[0004] The conventional method is to stack a certain amount of bagged cement at the working surface and adjust the water-cement ratio by adding water or dry powder cement manually. The traditional cement slurry preparation process usually relies on manual operation, which has problems such as inaccurate control of the water-cement ratio, low efficiency, and high labor intensity. In the prior art, although there are some automated devices for the preparation of cement slurry, there are still the following deficiencies:

[0005] 1) The control accuracy of the water-cement ratio is insufficient, and it is difficult to meet the high-standard construction requirements;

[0006] 2) The degree of system automation is limited, and manual intervention is still required;

[0007] 3) There is a lack of real-time monitoring and feedback mechanism, and the slurry mix ratio cannot be adjusted dynamically.

[0008] Therefore, it is an urgent problem for those skilled in the art to propose an intelligent feeding monitoring and slurry adjusting system for cement slurry to solve the difficulties existing in the prior art. Summary of the Invention

[0009] In view of this, the present invention provides an intelligent feeding monitoring and slurry adjusting system for cement slurry to solve the problems of inaccurate control of the water-cement ratio, low automation degree, and lack of real-time monitoring in the prior art.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] An intelligent slurry feeding and monitoring system for cement slurry, comprising: a pulp making station, a slurry mixing barrel, a control system, a water pump, a cement dry powder storage tank, a slurry storage barrel, and a grouting machine; wherein,

[0012] The pulp making station is used to transport the slurry to the slurry mixing barrel;

[0013] A sensor is provided inside the slurry mixing barrel for calculating the water-cement ratio and weight of the slurry in real time and transmitting the data to the control system;

[0014] The control system is used to receive the data from the sensor, compare it with the design value, automatically calculate the water-cement ratio difference from the design value, and then issue an opening instruction to the water pump or the cement dry powder storage tank;

[0015] When the water-cement ratio is greater than the design value, the cement dry powder storage tank is opened. When the set weight is reached, the sensor transmits the data to the control system, and the control system closes the cement dry powder storage tank; when the water-cement ratio is less than the design value, the water pump is opened. When the set weight is reached, the sensor transmits the data to the control system, and the control system closes the water pump;

[0016] When the control system detects that the weight of the slurry storage barrel is insufficient, it will issue a start instruction and open the slurry mixing barrel to put the prepared slurry into the slurry storage barrel. If there is no slurry with a standard water-cement ratio, it will enter the instruction waiting state, and the grouting machine will start discharging slurry after reaching the standard.

[0017] For the above system, optionally, the sensor includes a weight sensor and a water-cement ratio sensor.

[0018] For the above system, optionally, the pulp making station and the slurry mixing barrel are connected by a pipeline, and a flow control valve is provided on the pipeline.

[0019] For the above system, optionally, the control system uses a PLC controller or an industrial computer.

[0020] For the above system, optionally, the cement dry powder storage tank and the water pump are respectively connected to the slurry mixing barrel through solenoid valves.

[0021] For the above system, optionally, a filtering device is provided between the slurry storage barrel and the grouting machine.

[0022] For the above system, optionally, the filtering device includes a filter screen, a magnetic filter, a multi-layer filter, and an impurity collection tank connected in sequence; wherein,

[0023] Filter screen: used to intercept large particle impurities in the slurry;

[0024] Magnetic filter: used to adsorb metal impurities in the slurry;

[0025] Multi-layer filter: used to perform multi-layer filtration on the slurry;

[0026] Impurity collection tank: used to collect the filtered impurities.

[0027] For the above-mentioned system, optionally, the multi-layer filter includes: a coarse filter layer and a fine filter layer. The pore size of the coarse filter layer is 1.1 mm to 3.1 mm, and the pore size of the fine filter layer is 0.2 mm to 0.5 mm.

[0028] For the above-mentioned system, optionally, the impurity collection tank is provided with a liquid level sensor for monitoring the impurity liquid level and sending a signal to the control system.

[0029] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses an intelligent slurry feeding monitoring and slurry adjusting system for cement slurry, and its beneficial effects are as follows:

[0030] 1) By using sensors to monitor the water-cement ratio and weight of the slurry in real time and combining with the automatic calculation and adjustment functions of the control system, the present invention realizes the precise control of the water-cement ratio and improves the quality of the cement slurry.

[0031] 2) The system has a high degree of automation, reduces manual intervention, lowers the labor intensity, and improves the production efficiency.

[0032] 3) It has real-time monitoring and dynamic adjustment functions, can quickly respond according to actual needs, and ensures the stability of the slurry ratio.

[0033] 4) By setting up a filtering device, the purity of the slurry is further improved, meeting the requirements of high-standard construction. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0035] Figure 1 It is a structural diagram of an intelligent slurry feeding monitoring and slurry adjusting system for cement slurry provided by the present invention;

[0036] Figure 2 It is a grouting process diagram provided by the present invention;

[0037] Figure 3 It is a structural diagram of the filtering device provided by the present invention. Detailed Embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] See Figure 1 As shown, the present invention discloses an intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry, including: a pulp making station, a slurry mixing barrel, a control system, a water pump, a cement dry powder storage tank, a slurry storage barrel, and a grouting machine; wherein,

[0040] The pulp making station is used to transport the slurry to the slurry mixing barrel;

[0041] A sensor is provided in the slurry mixing barrel for calculating the water-cement ratio and weight of the slurry in real time and transmitting the data to the control system;

[0042] The control system is used to receive the data from the sensor, compare it with the design value, automatically calculate the water-cement ratio difference from the design value, and then send an opening instruction to the water pump or the cement dry powder storage tank;

[0043] When the water-cement ratio is greater than the design value, the cement dry powder storage tank is opened. When the set weight is reached, the sensor transmits the data to the control system, and the control system closes the cement dry powder storage tank; when the water-cement ratio is less than the design value, the water pump is opened. When the set weight is reached, the sensor transmits the data to the control system, and the control system closes the water pump;

[0044] When the control system detects that the weight of the slurry storage barrel is insufficient, it will send a start instruction and open the slurry mixing barrel to put the prepared slurry into the slurry storage barrel. If there is no slurry with a standard water-cement ratio, it will enter the instruction waiting state, and the grouting machine will start discharging slurry after reaching the standard.

[0045] See Figure 2 As shown, it is the grouting process diagram provided by the present invention.

[0046] Furthermore, the sensor includes a weight sensor and a water-cement ratio sensor.

[0047] Specifically, it is used to monitor the weight and water-cement ratio of the slurry in real time.

[0048] Furthermore, the pulp making station and the slurry mixing barrel are connected by a pipeline, and a flow control valve is provided on the pipeline.

[0049] Specifically, a flow control valve is provided on the pipeline for precisely controlling the conveying volume of the slurry.

[0050] Furthermore, the control system adopts a PLC controller or an industrial computer.

[0051] Further, the dry cement storage tank and the water pump are respectively connected to the slurry mixing barrel through solenoid valves.

[0052] Specifically, the opening and closing of the solenoid valve are controlled by the control system.

[0053] Further, a filtering device is provided between the slurry storage barrel and the grouting machine.

[0054] Further, as shown in Figure 3 the filtering device includes a filter screen, a magnetic filter, a multi-layer filter, and an impurity collection tank connected in sequence; among them,

[0055] Filter screen: used to intercept large particle impurities in the slurry;

[0056] Specifically, the aperture of the filter screen is 0.5 mm to 2 mm.

[0057] Magnetic filter: used to adsorb metal impurities in the slurry;

[0058] Multi-layer filter: used to perform multi-layer filtration on the slurry;

[0059] Impurity collection tank: used to collect the filtered impurities.

[0060] Specifically, it also includes a backwashing device, which is connected to the filtering device through a pipeline and is used to periodically clean the filter screen and the multi-layer filter. The filtering device is connected to the control system. The control system automatically starts the backwashing program according to the sensor data and monitors the liquid level of the impurity collection tank through a liquid level sensor to prompt for cleaning.

[0061] Further, the multi-layer filter includes: a coarse filtration layer and a fine filtration layer. The aperture of the coarse filtration layer is 1.1 mm to 3.1 mm, and the aperture of the fine filtration layer is 0.2 mm to 0.5 mm.

[0062] Specifically, the multi-layer filter adopts a replaceable design, which is convenient to adjust the filtration accuracy according to actual needs.

[0063] Further, the impurity collection tank is provided with a liquid level sensor, which is used to monitor the impurity liquid level and send a signal to the control system.

[0064] Specifically, the filter screen is made of stainless steel, with the characteristics of corrosion resistance and wear resistance; the magnetic force intensity of the magnetic filter is adjustable to adapt to the content of metal impurities in different slurries; the coarse filtration layer and the fine filtration layer of the multi-layer filter adopt a replaceable design, which is convenient to adjust the filtration accuracy according to actual needs; the impurity collection tank is provided with a liquid level sensor. When the impurities reach a certain amount, the sensor sends a signal to the control system to prompt for cleaning.

[0065] Specifically, by setting up a filter screen and a magnetic filter, large particle impurities and metal impurities in the slurry can be effectively removed, improving the purity of the slurry; the design of the multi-layer filter further enhances the filtering effect, ensuring that the slurry meets the high-standard construction requirements; the design of the impurity collection tank facilitates the centralized cleaning of impurities, improving the overall operation efficiency of the system; the filtering device is linked with the control system to achieve the automation and intelligentization of the filtering process.

[0066] In a specific embodiment:

[0067] Step 1: The pulp making station transports the preliminarily mixed slurry to the slurry mixing tank.

[0068] Step 2: The weight sensor and water-cement ratio sensor in the slurry mixing tank continuously monitor the weight and water-cement ratio of the slurry, and transmit the data to the control system.

[0069] Step 3: The control system compares the sensor data with the design value, and automatically calculates the difference in the water-cement ratio from the design value; if the water-cement ratio is greater than the design value, the control system opens the cement dry powder storage tank and adds cement dry powder to the slurry mixing tank until the set weight is reached, and the sensor transmits the data to the control system, and the control system closes the cement dry powder storage tank; if the water-cement ratio is less than the design value, the control system turns on the water pump and adds water to the slurry mixing tank until the set weight is reached, and the sensor transmits the data to the control system, and the control system turns off the water pump.

[0070] Step 4: When the control system detects that the weight of the slurry storage tank is insufficient, it issues a start command to open the slurry mixing tank and put the prepared slurry into the slurry storage tank.

[0071] Step 5: Before the slurry enters the slurry storage tank, it passes through a filtering device for filtration. The filter screen intercepts large particle impurities, and the magnetic filter adsorbs metal impurities. The multi-layer filter further filters fine particles; the impurity collection tank collects the filtered impurities, and the liquid level sensor monitors the impurity liquid level and sends a signal to the control system to prompt for cleaning.

[0072] Step 6: When the slurry in the slurry storage tank reaches the standard water-cement ratio and has been filtered, the grouting machine starts to discharge the slurry and transports the slurry to the construction area.

[0073] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0074] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry, characterized in that, Including: A pulp making station, a slurry mixing tank, a control system, a water pump, a cement dry powder storage tank, a slurry storage tank, and a grouting machine; among them, The pulp making station is used to transport the slurry to the slurry mixing tank; A sensor is provided in the slurry mixing tank, which is used to measure the water-cement ratio and weight of the slurry in real time, and transmit the data to the control system; The control system is used to receive the data from the sensor, compare it with the design value, automatically calculate the water-cement ratio difference from the design value, and then send an opening instruction to the water pump or the cement dry powder storage tank; When the water-cement ratio is greater than the design value, the cement dry powder storage tank is opened. When the set weight is reached, the sensor transmits the data to the control system, and the control system closes the cement dry powder storage tank; when the water-cement ratio is less than the design value, the water pump is opened. When the set weight is reached, the sensor transmits the data to the control system, and the control system closes the water pump; When the control system detects that the weight of the slurry storage tank is insufficient, it will issue a start instruction and open the slurry mixing tank to put the prepared slurry into the slurry storage tank. If there is no slurry with a standard water-cement ratio, it will enter the instruction waiting state. After reaching the standard, the grouting machine starts to discharge the slurry.

2. The intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry according to claim 1, wherein The sensor includes a weight sensor and a water-cement ratio sensor.

3. The intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry according to claim 1, wherein The pulp making station and the slurry mixing tank are connected by a pipeline, and a flow control valve is provided on the pipeline.

4. The intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry according to claim 1, characterized in that, The control system uses a PLC controller or an industrial computer.

5. The intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry according to claim 1, wherein The cement dry powder storage tank and the water pump are respectively connected to the slurry mixing tank through electromagnetic valves.

6. The intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry according to claim 1, wherein, A filtering device is provided between the slurry storage tank and the grouting machine.

7. An intelligent slurry feeding and monitoring slurry mixing system according to claim 6, wherein, The filtering device includes a filter screen, a magnetic filter, a multi-layer filter, and an impurity collection tank connected in sequence; Among them, Filter screen: used to intercept large particle impurities in the slurry; Magnetic filter: used to adsorb metal impurities in the slurry; Multi-layer filter: used to perform multi-layer filtration on the slurry; Impurity collection tank: used to collect the filtered impurities.

8. The intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry according to claim 7, characterized in that, The multi-layer filter includes a coarse filtration layer and a fine filtration layer. The aperture of the coarse filtration layer is 1.1 mm to 3.1 mm, and the aperture of the fine filtration layer is 0.2 mm to 0.5 mm.

9. The intelligent slurry feeding and monitoring and slurry adjusting system for cement slurry according to claim 7, wherein The impurity collection tank is provided with a liquid level sensor, which is used to monitor the impurity liquid level and send a signal to the control system.

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