Fusing device for duct vacuum grouting system and duct vacuum grouting system

Abstract

The utility model discloses a fusing device for a duct vacuum grouting system and the duct vacuum grouting system, the device comprises a support and a tank body, a liquid storage cavity is formed in the tank body, a slurry discharge port is formed in the bottom of the tank body, and a first connecting port and a second connecting port are formed in the side wall of the tank body; the device further comprises a first connecting pipe connected with the first connecting port, a second connecting pipe connected with the second connecting port, a first controllable valve arranged on the first connecting pipe and a second controllable valve arranged on the second connecting pipe. The device further comprises a slurry detection unit arranged in the liquid storage cavity and used for detecting the concentration of slurry in the liquid storage cavity. The device further comprises a controller which is used for receiving a signal of the concentration of the slurry output by the slurry detection unit and sending out a control signal for controlling the first controllable valve and the second controllable valve to be opened / closed. According to the utility model, the automatic and accurate intelligent control of the slurry outlet is realized, and the problems of potential quality hazard, equipment damage, waste of raw materials and the like are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, specifically, relates to a bridge grouting equipment technology, and more specifically, relates to a fuse device for a duct vacuum grouting system and a duct vacuum grouting system. Background Art

[0002] At present, a vacuum grouting system is used for grouting of post-tensioned prestressed bridge channels. Before grouting, a vacuum pump is used to evacuate the channel from one end of the beam body where the grouting outlet is located. After the vacuum requirements are met, the beam body grouting outlet valve is closed, and then the grouting pump is used to inject slurry into the channel from the other end of the channel.

[0003] In the vacuum grouting system, the timing of closing the valve of the beam body grouting outlet is very critical. If the grouting outlet valve is closed too early, it is easy to cause insufficient vacuum in the channel, thereby affecting the fullness and density of the channel grouting, causing quality risks in the beam body channel grouting. If the grouting outlet valve is closed too late, the slurry flowing out of the grouting outlet is easily sucked into the vacuum pump, causing damage to the vacuum pump, and causing waste of slurry flowing out of the grouting outlet.

[0004] When vacuum grouting is performed using the existing technology, the time to close the slurry outlet valve is usually determined manually based on experience. This not only requires manual monitoring and control, but also has a large human influence factor, making it difficult to accurately grasp the timing of valve closing, resulting in large manpower investment, inaccurate control, and quality risks, equipment damage, and waste of raw materials. Summary of the invention

[0005] The utility model aims to provide a fuse device for a duct vacuum grouting system and a duct vacuum grouting system, so as to realize automatic and accurate intelligent control of the grout outlet, reduce the occurrence of quality risks, equipment damage and waste of raw materials, and improve construction quality and efficiency.

[0006] In order to solve the above technical problems, the fuse device provided by the utility model adopts the following technical solutions to achieve the above problems:

[0007] A fuse device for a duct vacuum grouting system, comprising:

[0008] Bracket;

[0009] A tank body, which is arranged on the bracket, has a liquid storage cavity formed therein, a slurry discharge port connected to the liquid storage cavity formed at the bottom, an electric control chamber formed at the top, and a first connection port and a second connection port formed on the side wall, both of which are connected to the liquid storage cavity;

[0010] A first connecting pipe, one end of which is connected to the first connecting port, and the other end of which is a free end to be connected to the slurry outlet;

[0011] A second connecting pipe, one end of which is connected to the second connecting port, and the other end of which is a free end to be connected to a vacuum pump;

[0012] A first controllable valve, which is arranged on the first connecting pipe;

[0013] a second controllable valve, which is arranged on the second connecting pipe;

[0014] a slurry detection unit, which is disposed in the liquid storage cavity and is used to detect the concentration of the slurry in the liquid storage cavity;

[0015] The controller is arranged in the electric control chamber, and is at least used to receive the signal of slurry concentration output by the slurry detection unit, and send a control signal to control the opening / closing of the first controllable valve and the second controllable valve.

[0016] In some embodiments of the present application, the first connection port and the second connection port are arranged opposite to each other on the upper portion of the side wall of the tank body.

[0017] In some embodiments of the present application, the first controllable valve is a one-way valve.

[0018] In some embodiments of the present application, the device further comprises:

[0019] a position switch, which is disposed in the liquid storage cavity and is located below the first connection port and / or the second connection port and is close to the first connection port and / or the second connection port;

[0020] a switch sensing component, which is disposed in the liquid storage chamber and moves toward the direction close to the position switch as the liquid level of the slurry stored in the liquid storage chamber increases, and also moves away from the position switch as the liquid level of the slurry stored in the liquid storage chamber decreases;

[0021] The controller is also connected to the position switch and is used to receive a signal of the liquid level of the slurry in the liquid storage chamber output by the position switch.

[0022] In some embodiments of the present application, the switch sensing component:

[0023] An annular frame, which has a shape and size that matches the inner peripheral wall of the liquid storage cavity, an outer side wall of which is close to but not in contact with the inner peripheral wall of the liquid storage cavity, and an upper top surface of which forms a sensing surface;

[0024] A buoyancy block, which is located below the annular frame;

[0025] There are several connecting strips, which are used to connect the annular frame and the buoyancy block.

[0026] In order to achieve the above technical objectives, the vacuum grouting system provided by the utility model adopts the following technical solutions:

[0027] A duct vacuum grouting system, comprising a grouting pump connected to a bridge duct grouting port and a vacuum pump located at a slurry outlet of the bridge duct, the system further comprising a fuse device, the fuse device being arranged between the slurry outlet and the vacuum pump, the fuse device comprising:

[0028] Bracket;

[0029] A tank body, which is arranged on the bracket, has a liquid storage cavity formed therein, a slurry discharge port connected to the liquid storage cavity formed at the bottom, an electric control chamber formed at the top, and a first connection port and a second connection port formed on the side wall, both of which are connected to the liquid storage cavity;

[0030] A first connecting pipe, one end of which is connected to the first connecting port, and the other end of which is a free end to be connected to the slurry outlet;

[0031] a second connecting pipe, one end of which is connected to the second connecting port, and the other end of which is connected to the vacuum pump;

[0032] A first controllable valve, which is arranged on the first connecting pipe;

[0033] a second controllable valve, which is arranged on the second connecting pipe;

[0034] a slurry detection unit, which is disposed in the liquid storage cavity and is used to detect the concentration of the slurry in the liquid storage cavity;

[0035] The controller is arranged in the electric control chamber, and is at least used to receive the signal of slurry concentration output by the slurry detection unit, and send a control signal to control the opening / closing of the first controllable valve and the second controllable valve.

[0036] Compared with the prior art, the advantages and positive effects of the utility model are:

[0037] The utility model provides a fuse device for a vacuum grouting system of a duct, which is arranged between a slurry outlet and a vacuum pump. The fuse device comprises a tank body, a liquid storage chamber capable of storing slurry is formed inside the tank body, two connecting ports are arranged on the tank body, the two connecting ports are used to be connected to the slurry outlet and the vacuum pump respectively through connecting pipes, a controllable valve is arranged on each connecting pipe, a slurry detection unit is arranged in the liquid storage chamber, the controllable valve and the slurry detection unit are both connected to a controller in an electric control chamber arranged on the top of the tank body; when the duct is evacuated by the vacuum pump, the slurry flowing out of the slurry outlet enters the liquid storage chamber for storage, the controller receives a concentration signal of the slurry in the liquid storage chamber detected by the slurry detection unit, and when the concentration of the slurry in the liquid storage chamber reaches a set concentration, the controller detects the concentration of the slurry in the liquid storage chamber. When the temperature is high, the controller controls the controllable valve on the pipe connecting the slurry outlet to realize automatic closing of the slurry outlet. The controller also controls the controllable valve on the pipe connecting the vacuum pump to cut off the communication between the liquid storage chamber and the vacuum pump. By utilizing the fuse device, the slurry outlet can be automatically closed when the slurry concentration at the slurry outlet meets the set concentration and the vacuum degree of the channel is sufficient, thereby avoiding quality risks caused by premature closure of the channel. By utilizing the liquid storage chamber of the fuse device, the slurry flowing out of the slurry outlet is stored in the liquid storage chamber, thereby effectively avoiding the slurry from being sucked into the vacuum pump and avoiding damage to the vacuum pump. Moreover, the slurry in the liquid storage chamber can be conveniently recycled through the slurry discharge port on the tank body, thereby avoiding waste of raw materials and improving the utilization rate of raw materials.

[0038] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 This is a structural schematic diagram of an embodiment of the duct vacuum grouting system proposed by the utility model;

[0041] Figure 2 A three-dimensional schematic diagram of an embodiment of a fuse device for a duct vacuum grouting system proposed by the utility model;

[0042] Figure 3 for Figure 2 One of the schematic diagrams of the internal structure of the embodiment;

[0043] Figure 4 for Figure 2 The second schematic diagram of the internal structure of the embodiment;

[0044] Figure 5 for Figure 2 Control principle block diagram of an embodiment;

[0045] In the figure, the reference numerals and their corresponding component names are as follows:

[0046] 100. Fuse device;

[0047] 1. Bracket;

[0048] 2. Tank body; 21. Liquid storage chamber; 22. Slurry discharge port; 23. First connection port; 24. Second connection port; 25. Electric control chamber;

[0049] 31. First connecting pipe; 32. Second connecting pipe; 33. First controllable valve; 34. Second controllable valve;

[0050] 4. Slurry detection unit; 41. Concentration sensor; 42. Camera;

[0051] 51. Position switch; 52. Switch sensing component; 521. Ring frame; 522. Buoyancy block; 523. Connecting strip;

[0052] 6. Controller;

[0053] 200. Grouting pump; 300. Vacuum pump; 400. Bridge channel. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0055] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly defined and specified, the term "connection" and the like should be understood in a broad sense. For example, "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0059] Figure 1 Shown is a structural schematic diagram of an embodiment of the channel vacuum grouting system proposed by the utility model.

[0060] like Figure 1 As shown, the vacuum grouting system of the duct of this embodiment includes a grouting pump 200 and a vacuum pump 300. The grouting pump 200 is connected to the grouting port of the bridge duct 400, and the vacuum pump 300 is located outside the grouting outlet of the bridge duct 400. The vacuum grouting system of the duct of this embodiment also includes a fuse device 100 located between the grouting outlet of the bridge duct 400 and the vacuum pump 300. The fuse device 100 can be used to realize automatic and accurate closing control of the grouting outlet of the bridge duct 400 when the vacuum pump 300 is used to perform vacuum grouting on the bridge duct 400.

[0061] For the specific structure, control principle and process of the fuse device 100, please refer to the description of the subsequent embodiments.

[0062] Figures 2 to 5 An embodiment of the fuse device for the vacuum grouting system of the duct proposed by the utility model is shown. Figure 2 is a three-dimensional schematic diagram of the fuse device in this embodiment, Figure 3 and Figure 4 They are schematic diagrams of the internal structure of the fuse device in this embodiment, Figure 5 FIG. 4 is a control principle block diagram of the fuse device of this embodiment.

[0063] See also Figures 2 to 5 As shown, combined with Figure 1 The structure of the vacuum grouting system for the duct is shown, and the fuse device 100 includes a bracket 1 and a tank body 2 arranged on the bracket 1. The bracket 1 supports the tank body 2 and at the same time increases the height of the tank body 2 to facilitate connection with the slurry outlet of the bridge duct and to facilitate the discharge of the slurry stored in the tank body 2.

[0064] A liquid storage cavity 21 is formed inside the tank body 2, a slurry discharge port 22 is formed at the bottom of the tank body 2, a first connection port 23 and a second connection port 24 are formed on the side wall of the tank body 2, and an electric control chamber 25 is formed on the top of the tank body 2. The slurry discharge port 22, the first connection port 23 and the second connection port 24 are all connected to the liquid storage cavity 21.

[0065] The fuse device 100 further includes a first connecting pipe 31 and a second connecting pipe 32. One end of the first connecting pipe 31 is connected to the first connecting port 23, and the other end is a free end, which is used to connect to the slurry outlet of the bridge channel. One end of the second connecting pipe 32 is connected to the second connecting port 24, and the other end is a free end, which is used to connect to the vacuum pump. A first controllable valve 33 ( Figures 2 to 4 A second controllable valve 34 (not shown) is provided on the second connecting pipe. Figures 2 to 4 not shown).

[0066] In some other embodiments, the first connection port 23 and the second connection port 24 are arranged opposite to each other at the upper part of the side wall of the tank body 2. By arranging the first connection port 23 and the second connection port 24 at the upper part of the tank body 2, the space of the liquid storage cavity 21 can be fully utilized for liquid storage; by arranging the first connection port 23 and the second connection port 24 opposite to each other, it is convenient to connect the fuse device with the slurry outlet, the vacuum pump 300, etc.

[0067] The fuse device 100 further includes a slurry detection unit 4, which is disposed in the liquid storage chamber 21 and is used to detect the concentration of the slurry in the liquid storage chamber 21. In some embodiments, the slurry detection unit 4 includes a concentration sensor 41, which is disposed at an appropriate position in the liquid storage chamber 21 and can detect and output a concentration signal of the slurry in the liquid storage chamber 21. In some other embodiments, the slurry detection unit 4 further includes a camera 42, which is disposed at the upper part of the liquid storage chamber 21, for example, near the position of the electric control chamber 25, and can take an image of the slurry in the liquid storage chamber 21, and the concentration of the slurry can be identified based on the image.

[0068] The fuse device 100 further includes a controller 6 ( Figures 2 to 4 ), which is placed in the electric control chamber 25. The controller 6 is connected to the slurry detection unit 4, the first controllable valve 33, and the second controllable valve 34, receives the signal of the slurry concentration output by the slurry detection unit 4, and sends a control signal to control the opening / closing of the first controllable valve 33 and the second controllable valve 34. After the first controllable valve 33 is controlled to be closed, the slurry outlet of the bridge channel 400 is closed; after the second controllable valve 34 is controlled to be closed, the connection between the vacuum pump 300 and the liquid storage chamber 21 is closed. In addition to the controller 6, a power supply for powering the fuse device is also provided in the electric control chamber 25, and the power supply is connected to the components in the device that need to be powered.

[0069] In some other embodiments, the first controllable valve 33 is a one-way valve. The one-way valve allows the slurry to flow only from the slurry outlet to the liquid storage chamber 21, but not in the reverse direction, thereby preventing the slurry in the liquid storage chamber 21 from flowing back into the channel.

[0070] In some other embodiments, the fuse device 100 is further provided with a control signal acquisition unit consisting of a position switch 51 and a switch sensing component 52. Specifically, the position switch 51 is arranged in the liquid storage chamber 21, below the first connection port 23 and / or the second connection port 24 and close to the first connection port 23 and / or the second connection port 24; the switch sensing component 52 is arranged in the liquid storage chamber 21, and moves toward the direction close to the position switch 51 as the liquid level of the slurry stored in the liquid storage chamber 21 increases, and also moves away from the position switch 51 as the liquid level of the slurry stored in the liquid storage chamber 21 decreases.

[0071] The controller 6 is also connected to the position switch 51 for receiving the output signal of the position switch. When the liquid level of the slurry in the liquid storage chamber 21 increases, the switch sensing component 52 moves in the direction of the position switch 51. If the position switch 51 is a contact-type micro switch, a travel switch, etc., when the switch sensing component 52 contacts the position switch 51, the position switch 51 sends a signal to the controller 6, and the signal reflects the liquid level of the slurry in the liquid storage chamber 21. If the position switch 51 is a non-contact proximity switch, when the distance between the switch sensing component 52 and the position switch 51 enters a sensible proximity distance, the position switch 51 sends a signal to the controller 6, and the signal reflects the liquid level of the slurry in the liquid storage chamber 21. The controller 6 can send a control signal according to the liquid level, and when the liquid level reaches a higher height, the first controllable valve 33 and the second controllable valve 34 are controlled to be closed, so as to achieve the purpose of fusing the slurry outlet. After the slurry in the liquid storage chamber 21 is discharged from the slurry discharge port 22, the liquid level of the slurry in the liquid storage chamber 21 drops, and the controller 6 controls the first controllable valve 33 and the second controllable valve 34 to open, so that the fuse device 100 is reset to an operable state to perform normal fusing again.

[0072] In some other embodiments, the switch sensing component 52 includes an annular frame 521, a buoyancy block 522 and a connecting strip 523. The annular frame 521 has a shape and size that matches the inner peripheral wall of the liquid storage chamber 21, and its outer side wall is close to and does not contact the inner peripheral wall of the liquid storage chamber 21, so that the annular frame 521 can move up and down smoothly along the inner peripheral wall of the liquid storage chamber 21. The upper top surface of the annular frame 521 forms a sensing surface for contacting or sensing the position switch 51. The buoyancy block 522 is located below the annular frame 521 and is connected to the annular frame 521 through a plurality of connecting strips 523. Under the action of the buoyancy block 522, the entire switch sensing component 52 rises or falls with the change of the liquid level of the slurry in the liquid storage chamber 21.

[0073] Combine the following Figure 5 The control principle block diagram of the fuse device 100 is further described in detail:

[0074] When the slurry in the bridge channel 400 flows from the slurry outlet into the liquid storage chamber 21, the slurry detection unit 4 and the controller 6 automatically obtain the concentration of the slurry. When the concentration reaches the set concentration, the controller 6 controls the first controllable valve 33 on the first connecting pipe 31 connected to the slurry outlet to automatically close the slurry outlet, and also controls the second controllable valve 34 on the second connecting pipe 32 connected to the vacuum pump 300 to cut off the connection between the liquid storage chamber 21 and the vacuum pump 300. The slurry stored in the liquid storage chamber 21 can be poured out through the slurry discharge port 22 on the tank body 2, which is convenient for recycling, avoiding the waste of raw materials and improving the utilization rate of raw materials. Therefore, it is possible to automatically close the slurry outlet when the slurry concentration at the slurry outlet meets the set concentration and the vacuum degree of the channel is sufficient, avoiding the quality risks caused by the premature closure of the channel. Furthermore, by utilizing the liquid storage chamber 21 of the fuse device 100 , the slurry flowing out of the slurry outlet is stored in the liquid storage chamber 21 , which effectively prevents the slurry from being sucked into the vacuum pump 300 , thereby preventing the vacuum pump from being damaged.

[0075] When the slurry in the liquid storage chamber 21 increases and the liquid level continues to rise, the switch sensing component 52 continues to approach the position switch 51. When the liquid level reaches a certain height, the position switch 51 contacts or senses the switch sensing component 52, and outputs a signal to the controller 6, which also controls the first controllable valve 33 and the second controllable valve 34 to close, thereby realizing automatic fusing of the slurry outlet.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A fuse device for a duct vacuum grouting system, characterized in that: The device comprises: Bracket; A tank body, which is arranged on the bracket, has a liquid storage cavity formed therein, a slurry discharge port connected to the liquid storage cavity formed at the bottom, an electric control chamber formed at the top, and a first connection port and a second connection port formed on the side wall, both of which are connected to the liquid storage cavity; A first connecting pipe, one end of which is connected to the first connecting port, and the other end of which is a free end to be connected to the slurry outlet; A second connecting pipe, one end of which is connected to the second connecting port, and the other end of which is a free end to be connected to a vacuum pump; A first controllable valve, which is arranged on the first connecting pipe; a second controllable valve, which is arranged on the second connecting pipe; a slurry detection unit, which is disposed in the liquid storage cavity and is used to detect the concentration of the slurry in the liquid storage cavity; The controller is arranged in the electric control chamber, and is at least used to receive the signal of slurry concentration output by the slurry detection unit, and send a control signal to control the opening / closing of the first controllable valve and the second controllable valve.

2. The fuse device for the duct vacuum grouting system according to claim 1 is characterized in that: The first connection port and the second connection port are arranged opposite to each other on the upper portion of the side wall of the tank body.

3. The fuse device for the duct vacuum grouting system according to claim 1 is characterized in that: The first controllable valve is a one-way valve.

4. The fuse device for the duct vacuum grouting system according to any one of claims 1 to 3, characterized in that: The device also includes: a position switch, which is disposed in the liquid storage cavity and is located below the first connection port and / or the second connection port and is close to the first connection port and / or the second connection port; a switch sensing component, which is disposed in the liquid storage chamber and moves toward the direction close to the position switch as the liquid level of the slurry stored in the liquid storage chamber increases, and also moves away from the position switch as the liquid level of the slurry stored in the liquid storage chamber decreases; The controller is also connected to the position switch and is used to receive a signal of the liquid level of the slurry in the liquid storage chamber output by the position switch.

5. The fuse device for the duct vacuum grouting system according to claim 4 is characterized in that: The switch sensing component: An annular frame, which has a shape and size that matches the inner peripheral wall of the liquid storage cavity, an outer side wall of which is close to but not in contact with the inner peripheral wall of the liquid storage cavity, and an upper top surface of which forms a sensing surface; A buoyancy block, which is located below the annular frame; There are several connecting strips, which are used to connect the annular frame and the buoyancy block.

6. A vacuum grouting system for a duct, comprising a grouting pump connected to a grouting port of a bridge duct and a vacuum pump located at a grouting outlet of the bridge duct, characterized in that: The system further comprises a fuse device, which is arranged between the slurry outlet and the vacuum pump, and comprises: Bracket; A tank body, which is arranged on the bracket, has a liquid storage cavity formed therein, a slurry discharge port connected to the liquid storage cavity formed at the bottom, an electric control chamber formed at the top, and a first connection port and a second connection port formed on the side wall, both of which are connected to the liquid storage cavity; A first connecting pipe, one end of which is connected to the first connecting port, and the other end of which is a free end to be connected to the slurry outlet; a second connecting pipe, one end of which is connected to the second connecting port, and the other end of which is connected to the vacuum pump; A first controllable valve, which is arranged on the first connecting pipe; a second controllable valve, which is arranged on the second connecting pipe; a slurry detection unit, which is disposed in the liquid storage cavity and is used to detect the concentration of the slurry in the liquid storage cavity; The controller is arranged in the electric control chamber, and is at least used to receive the signal of slurry concentration output by the slurry detection unit, and send a control signal to control the opening / closing of the first controllable valve and the second controllable valve.

7. The hole vacuum grouting system according to claim 6, characterized in that: The first connection port and the second connection port are arranged opposite to each other on the upper portion of the side wall of the tank body.

8. The hole vacuum grouting system according to claim 6, characterized in that: The first controllable valve is a one-way valve.

9. The hole vacuum grouting system according to any one of claims 6 to 8, characterized in that: The device also includes: a position switch, which is disposed in the liquid storage cavity and is located below the first connection port and / or the second connection port and is close to the first connection port and / or the second connection port; a switch sensing component, which is disposed in the liquid storage chamber and moves toward the direction close to the position switch as the liquid level of the slurry stored in the liquid storage chamber increases, and also moves away from the position switch as the liquid level of the slurry stored in the liquid storage chamber decreases; The controller is also connected to the position switch and is used to receive a signal of the liquid level of the slurry in the liquid storage chamber output by the position switch.

10. The hole vacuum grouting system according to claim 9, characterized in that: The switch sensing component: An annular frame, which has a shape and size that matches the inner peripheral wall of the liquid storage cavity, an outer side wall of which is close to but not in contact with the inner peripheral wall of the liquid storage cavity, and an upper top surface of which forms a sensing surface; A buoyancy block, which is located below the annular frame; There are several connecting strips, which are used to connect the annular frame and the buoyancy block.

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