A controllable pressure curing grouting pump and its control method

Abstract

The present invention discloses a construction equipment, aiming to provide a controllable pressure curing grouting pump and its control method that can adjust the working pressure and prevent pipe explosion during work. The key technical points are that due to the setting of a pressure detection device and a flow detection device, during the grouting process, the pressure during grouting and the flow rate of the material liquid can be detected in real time, and the central control device can adjust the overall device according to the pressure and flow rate, improving the accuracy and stability during the grouting process. At the same time, the working pressure of the grouting pump can be adjusted by adjusting the pressure of the pressure member on the air outlet, which is convenient to control and has a good adjustment effect. The present invention is applicable to the technical field of construction equipment.

Description

Technical Field

[0001] The present invention relates to a construction equipment, and more particularly to a controllable pressure curing grouting pump and its control method. Background Art

[0002] A grouting pump mixes three kinds of curing materials and water in a mixer according to a certain ratio to form a curing slurry, which is then pressed into a pipeline through a hydraulic delivery cylinder and transported to the working surface through the pipeline. Grouting construction is a commonly used reinforcement method in dam foundation construction at home and abroad, and the grouting pressure is one of the key parameters affecting the grouting quality.

[0003] Due to factors such as non-linearity and uncertainty of formation changes during the grouting process, a high-pressure grouting method will occur during the grouting process. At present, the following main problems exist in the grouting construction process: 1. Due to reasons such as unstable discharge flow and small lift of the grouting pump, the on-site grouting pressure is very unstable, affecting the quality of the grouting operation; 2. Most of the control methods for grouting pressure adopt a control method composed of an electric grouting pump and a pressure regulating valve. The grouting pressure is relatively small and cannot reach the ultra-high pressure grouting method under special conditions, thus failing to meet the grouting construction requirements for dams; 3. During the grouting process, if the slurry outlet is blocked, resulting in a pipe blockage phenomenon, the pressure in the grouting pipeline will be too high, causing a pipe burst problem, thus causing casualties. Therefore, a curing grouting pump with controllable pressure is urgently needed. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a controllable pressure curing grouting pump that can adjust the working pressure and prevent pipe bursts during work, and its control method.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A controllable pressure curing grouting pump includes an outer housing and a pump body disposed inside the outer housing. A power device is provided at the top of the pump body, and a pressure control module is further provided inside the power device. The pressure control module includes a pressure chamber disposed inside the outer housing, a plurality of air inlet valves disposed at the top of the power device, and a pressure detection element disposed inside the pressure chamber. An outlet is provided at the bottom of the pressure chamber, and an explosion-proof pipe device is further provided inside the pressure chamber. The explosion-proof pipe device is electrically connected to the pressure detection element to prevent the risk of explosion due to excessive pressure inside the pressure chamber.

[0006] The present invention is further configured as: The explosion-proof pipe device includes an air outlet hole provided on the pressure chamber and a plug disposed on the air outlet hole. A pressure member is further provided on the plug, and the pressure member is used to adjust the pressure of the plug on the air outlet hole.

[0007] Preferably, a central control device is further provided in the pump body. The central control device includes a power device, a signal processing device, and a display device. The power device is used to control the working state of the pump body, and the signal processing device is electrically connected to the display device, the power device, the pressure detection device, and the explosion-proof pipe device respectively.

[0008] The present invention also provides a control method for a controllable pressure curing grouting pump, which includes the following steps: S1. The staff sets the required pressure P when the grouting pump works. The central control device sets the pressure of the pressure member, and at the same time closes the discharge port for safety testing of the air outlet;

[0009] S2. The central control device records the initial pressure value inside the pressure chamber as P0, and at the same time drives the pump body to increase the pressure in the pressure chamber, and the pressurization time is T;

[0010] S3. During the T time period, the pressure detection element detects the pressure value inside the pressure chamber as P1. If P1 ≤ P0, it is judged that the air outlet or the pressure member is damaged, the device stops and notifies the staff for repair. If P1 > P0, it jumps to S4 for continued detection;

[0011] S4. Continue to pressurize for T1 time, and at the same time the pressure detection element detects the pressure value inside the pressure chamber as P2. If P2 < P, it is judged that the pressure has not reached the working pressure, the pump body continues to apply pressure, and jumps back to S4 for re-detection. If P2 = P, it is judged that the pressure has reached the working pressure, and jumps to S5 for continued detection;

[0012] S5. Continue to pressurize, and at the same time the pressure detection element detects the pressure value as P3. If P3 = P, it is judged that the explosion-proof pipe device is operating normally, and the grouting operation is carried out. On the contrary, if P3 > P, it is judged that the air outlet is blocked, the device stops and notifies the staff for maintenance.

[0013] Preferably, the control method for a controllable pressure curing grouting pump further includes a flow detection device provided in the pump body. The grouting operation in step S5 includes the following steps: S51. Set the grouting pressure as Pa and the material liquid flow rate as V. The central control device opens the discharge port, and at the same time the pump body pressurizes the pressure chamber and starts grouting;

[0014] S52. During the grouting process, the flow detection device detects the flow rate inside the pump body as V1. If V < V1, it is judged that the material liquid is blocked and jumps to S53 for the pump body dredging operation. If V = V1, it is judged that the discharge is normal, and jumps to S54 for the pressure detection operation;

[0015] S53. The central control device increases the pressure inside the pressure chamber and simultaneously detects the flow detection device. The detection result is V2. If V2 = V0, it is determined that the material liquid is not blocked, and it jumps to S54 for pressure detection operation. Conversely, if V2 < V0, it is determined that the material liquid is severely blocked, the device stops, and the staff is notified for maintenance;

[0016] S54. The pressure detection element detects the real-time pressure value Pb inside the pressure chamber. If Pb < Pa, it is determined that the grouting pressure is insufficient, and the central control device increases the pressure inside the pressure chamber. If Pb = Pa, it is determined that the pressure reaches the predetermined value, and the grouting pump starts the grouting operation; if Pb > Pa, it is determined that the pressure inside the pressure chamber is too high and the air outlet cannot discharge air, the device stops, and the staff is notified for repair.

[0017] By adopting the above technical solution, since there are a pressure detection device and a flow detection device, during the grouting process, the pressure during grouting and the flow rate of the material liquid can be detected in real time, and the central control device can adjust the overall device according to the pressure and flow rate, improving the accuracy and stability during the grouting process. At the same time, the working pressure of the grouting pump can be adjusted by adjusting the pressure of the pressure member on the air outlet, which is convenient to control and has a good adjustment effect.

[0018] Furthermore, in order to prevent the risk of pipe explosion caused by blockage during the grouting process, the air outlet is provided to allow the gas inside the pipeline to leak out, preventing the continuous increase of air pressure. And, by applying pressure to the air outlet by the pressure member, the gas needs to leak out from the air outlet. Since the air outlet is blocked by the pressure member, when the pressure inside the pressure chamber is less than the pressure of the pressure member on the air outlet, the air outlet remains sealed, and at the same time, the pressure inside the pressure chamber continues to increase. When the pressure inside the pressure chamber is greater than the pressure of the pressure member on the air outlet, the pressure member is pushed open, and at the same time, the pressure inside the pressure chamber decreases, and the air outlet is resealed. Specifically, the greater the pressure of the pressure member, the greater the force required to push open the pressure member, and the higher the upper limit of the pressure inside the pipeline. Through this solution, the grouting pressure can be adjusted as needed, and at the same time, the gas can be automatically discharged when the grouting pressure exceeds the upper limit, keeping the pressure inside the pipeline within a safe range.

[0019] Meanwhile, to improve the stability of the device during the grouting process, a flow detection device is provided inside the pump body to detect the discharge volume in real time during the grouting process, making the overall discharge volume of the device stable. And the device can detect the blockage state of the liquid material in real time. If the flow rate of the liquid material decreases, it indicates that there is a blockage inside the pump body. At this time, the central control device increases the output pressure of the pump body, causing a greater impact force on the flow channel by the liquid material, so that the blockage inside the pump body falls off. Through this treatment method, the pump body can be dredged when the blockage inside the pump body is relatively light, reducing the frequency of manual dredging, improving the overall working efficiency, and preventing the liquid material from being blocked, resulting in uneven grouting and affecting the final grouting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of an embodiment of a controllable pressure solidification grouting pump and its control method of the present invention;

[0021] Figure 2 is the first part of the control method flow chart of an embodiment of a controllable pressure solidification grouting pump and its control method of the present invention;

[0022] Figure 3 is the second part of the control method flow chart of an embodiment of a controllable pressure solidification grouting pump and its control method of the present invention;

[0023] Figure 4 is the first part of the flow detection method flow chart of an embodiment of a controllable pressure solidification grouting pump and its control method of the present invention;

[0024] Figure 5 is the second part of the flow detection method flow chart of an embodiment of a controllable pressure solidification grouting pump and its control method of the present invention;

[0025] Reference numerals in the drawings: 1, outer housing; 2, pump body; 3, power device; 4, pressure chamber; 5, intake valve; 6, pressure detection element; 7, discharge port; 8, air outlet; 9, plug; 10, flow detection device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Refer to Figures 1 to 5 for further description of an embodiment of a controllable pressure solidification grouting pump and its control method of the present invention.

[0027] For ease of explanation, in the embodiments, spatial relative terms such as "upper", "lower", "left", "right", etc. are used to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientations shown in the figure, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the figure is inverted, the element described as being "lower" than other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly.

[0028] Moreover, relative relationship terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0029] A controllable pressure curing grouting pump includes a housing 1 and a pump body 2 disposed within the housing 1. A power device 3 is provided at the top of the pump body 2, and a pressure control module is further provided within the power device 3. The pressure control module includes a pressure chamber 4 disposed within the housing 1, a plurality of intake valves 5 provided at the top end of the power device 3, and a pressure detection element 6 disposed within the pressure chamber 4. An outlet 7 is provided at the bottom of the pressure chamber 4, and an explosion-proof pipe device is further provided within the pressure chamber 4. The explosion-proof pipe device is electrically connected to the pressure detection element 6 to prevent the risk of explosion due to excessive pressure within the pressure chamber 4.

[0030] The present invention is further configured such that: the explosion-proof pipe device includes an air outlet hole 8 provided on the pressure chamber 4 and a plug 9 provided on the air outlet hole 8. A pressure member is further provided on the plug 9, and the pressure member is used to adjust the pressure of the plug 9 on the air outlet hole 8.

[0031] Preferably, a central control device is further provided within the pump body 2. The central control device includes a power device 3, a signal processing device, and a display device. The power device 3 is used to control the working state of the pump body 2, and the signal processing device is electrically connected to the display device, the power device 3, the pressure detection device, and the explosion-proof pipe device respectively.

[0032] Due to the provision of a pressure detection device and a flow rate detection device 10, during the grouting process, the pressure during grouting and the flow rate of the liquid material can be detected in real time, and the central control device can adjust the overall device according to the pressure and flow rate, improving the accuracy and stability during the grouting process. At the same time, the working pressure of the grouting pump can be adjusted by adjusting the pressure of the pressure member on the air outlet hole 8, which is convenient to control and has a good adjustment effect.

[0033] The present invention also provides a control method for a controllable pressure curing grouting pump, which includes the following steps: S1. The staff sets the pressure P required during the operation of the grouting pump, the central control device sets the pressure of the pressure component, and at the same time closes the discharge port for safety testing of the air outlet;

[0034] S2. The central control device records the initial pressure value in the pressure chamber as P0, and at the same time drives the pump body to increase the pressure in the pressure chamber, and the pressurization time is T;

[0035] S3. During the T time period, the pressure detection element detects the pressure value in the pressure chamber as P1. If P1 ≤ P0, it is determined that the air outlet or the pressure component is damaged, the device stops and notifies the staff for repair. If P1 > P0, it jumps to S4 for continued detection;

[0036] S4. Continue to pressurize for T1 time, and at the same time the pressure detection element detects the pressure value in the pressure chamber as P2. If P2 < P, it is determined that the pressure has not reached the working pressure, the pump body continues to apply pressure, and jumps back to S4 for re-detection. If P2 = P, it is determined that the pressure has reached the working pressure, and jumps to S5 for continued detection;

[0037] S5. Continue to pressurize, and at the same time the pressure detection element detects the pressure value as P3. If P3 = P, it is determined that the explosion-proof pipe device is operating normally, and grouting operation is carried out. On the contrary, if P3 > P, it is determined that the air outlet is blocked, the device stops and notifies the staff for maintenance.

[0038] Preferably, the control method for the controllable pressure curing grouting pump further includes a flow detection device 10 arranged in the pump body. The grouting operation in step S5 includes the following steps: S51. Set the grouting pressure as Pa and the liquid flow rate as V. The central control device opens the discharge port, and at the same time the pump body increases the pressure in the pressure chamber and starts grouting;

[0039] S52. During the grouting process, the flow detection device detects the flow rate in the pump body as V1. If V < V1, it is determined that the liquid material is blocked and jumps to S53 for pump body dredging operation. If V = V1, it is determined that the discharge is normal and jumps to S54 for pressure detection operation;

[0040] S53. The central control device increases the pressure inside the pressure chamber, and at the same time detects the flow detection device, and the detection result is V2. If V2 = V0, it is determined that the liquid material is not blocked and jumps to S54 for pressure detection operation. On the contrary, if V2 < V0, it is determined that the liquid material blockage is more serious, the device stops and notifies the staff for maintenance;

[0041] The pressure detection element S54 detects the real-time pressure value Pb inside the pressure chamber. If Pb < Pa, it is determined that the grouting pressure is insufficient, and the central control device increases the pressure inside the pressure chamber. If Pb = Pa, it is determined that the pressure reaches the predetermined value, and the grouting pump starts the grouting operation. If Pb > Pa, it is determined that the pressure inside the pressure chamber is too high and the air outlet cannot discharge air, and the device stops and notifies the staff for maintenance.

[0042] Furthermore, to prevent blockage during grouting and the risk of pipe explosion, the air outlet 8 is provided to allow the gas inside the pipe to leak out, preventing the continuous increase of air pressure. And, a pressure member applies pressure to the air outlet 8. The gas needs to leak out from the air outlet 8. Since the air outlet 8 is blocked by the pressure member, when the pressure inside the pressure chamber is less than the pressure applied by the pressure member to the air outlet 8, the air outlet 8 remains sealed, and at the same time, the pressure inside the pressure chamber continues to increase. When the pressure inside the pressure chamber is greater than the pressure applied by the pressure member to the air outlet 8, the pressure member is pushed open, and at the same time, the pressure inside the pressure chamber decreases, and the air outlet 8 is resealed. Specifically, the greater the pressure of the pressure member, the greater the force required to push open the pressure member, and the higher the upper limit of the pressure inside the pipe. Through this solution, the grouting pressure can be adjusted as needed, and at the same time, when the grouting pressure exceeds the upper limit, the gas can be automatically discharged, keeping the pressure inside the pipe within a safe range.

[0043] At the same time, to improve the stability of the device during grouting, a flow detection device 10 is provided inside the pump body 2 to detect the discharge amount in real time during grouting, making the overall discharge amount of the device stable. And the device can detect the blockage state of the liquid material in real time. For example, if the flow rate of the liquid material decreases, it indicates that there is a blockage inside the pump body 2. At this time, the central control device increases the output pressure of the pump body 2, causing the liquid material to generate a greater impact force on the flow channel, so that the blockage inside the pump body 2 falls off. Through this treatment method, the pump body 2 can be dredged when the blockage inside the pump body 2 is relatively light, reducing the frequency of manual dredging, improving the overall work efficiency, and preventing the liquid material from being blocked, resulting in uneven grouting and affecting the final grouting effect.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A controllable pressure curing grouting pump, comprising a housing and a pump body disposed within the housing, characterized in that, A power device is provided at the top of the pump body. A pressure control module is further provided inside the power device. The pressure control module includes a pressure chamber arranged inside the housing, a plurality of air inlet valves arranged at the bottom end of the pump body, and a pressure detection element arranged inside the pressure chamber. A discharge port is provided at the bottom of the pressure chamber. An explosion-proof pipe device is further provided inside the pressure chamber. The explosion-proof pipe device is electrically connected to the pressure detection element and is used to prevent the risk of explosion due to excessive pressure inside the pressure chamber. The explosion-proof pipe device includes an air outlet hole (8) arranged on the pressure chamber (4) and a plug (9) arranged on the air outlet hole (8). A pressure member is further provided on the plug (9). The pressure member is used to adjust the pressure of the plug (9) on the air outlet hole (8). A central control device is further provided inside the pump body (2). The central control device includes a power device (3), a signal processing device, and a display device. The power device (3) is used to control the working state of the pump body (2). The signal processing device is electrically connected to the display device, the power device (3), the pressure detection device, and the explosion-proof pipe device respectively. The control method of the controllable pressure solidification grouting pump includes the following steps: S1. The staff sets the required pressure P when the grouting pump works. The central control device sets the pressure of the pressure member, and at the same time closes the discharge port to perform a safety test on the air outlet hole. S2. The central control device records the initial pressure value inside the pressure chamber as P0, and at the same time drives the pump body to increase the pressure inside the pressure chamber. The pressure increase time is T. S3. During the T time period, the pressure detection element detects the pressure value inside the pressure chamber as P1. If P1 ≤ P0, it is judged that the air outlet hole or the pressure member is damaged, the device stops and notifies the staff for maintenance. If P1 > P0, it jumps to S4 for continued detection. S4. Continue to increase the pressure for T1 time. At the same time, the pressure detection element detects the pressure value inside the pressure chamber as P2. If P2 < P, it is judged that the pressure has not reached the working pressure, the pump body continues to apply pressure, and jumps back to S4 for re-detection. If P2 = P, it is judged that the pressure has reached the working pressure, and jumps to S5 for continued detection. S5. Continue to increase the pressure. At the same time, the pressure detection element detects the pressure value as P3. If P3 = P, it is judged that the explosion-proof pipe device is operating normally, and grouting operation is carried out. On the contrary, if P3 > P, it is judged that the air outlet hole is blocked, the device stops and notifies the staff for maintenance.

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