Well casing grouting non-return device

Abstract

The utility model discloses a well casing grouting non-return device, which belongs to the technical field of grouting and comprises a base, an adjusting mechanism and a non-return mechanism, the adjusting mechanism comprises a screw, a stop block and a threaded ring matched with the screw, and the stop block is mounted at the lower end of the screw; the base is provided with an adjusting cavity, the threaded ring is fixed to the upper side of the adjusting cavity, and the stop block is movably installed in the adjusting cavity. An input port is formed in the lower side of the adjusting cavity, an output port is formed in one side of the adjusting cavity, and the non-return mechanism is installed at the output port. Under the conditions of large grouting pressure and large flow, the opening degree is reduced through the screw rod and the stop block, and the resistance and the flow are improved; and in the later stage of grouting, under the condition that the grouting pressure and flow are gradually reduced, the height of the stop block is adjusted upwards, the opening degree of the output port is increased, it is guaranteed that grout can still pass through in sequence, grout waste is avoided, the construction difficulty is reduced, and the controllability of the grouting process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting, and particularly relates to a reverse stop device for well pipe grouting. Background Art

[0002] Well pipe grouting is a construction method used in soil layers or rock drilling. After installing a well pipe in the well hole, grouting is carried out. A reverse stop device is required during grouting to prevent the reverse flow of the grout through a check valve or a check plate. Due to the unstable pressure during the grouting process, especially when the grout transmission volume is small and the impact force is reduced, the resistance of the reverse stop device cannot be overcome, resulting in the grout being unable to pass smoothly, causing waste of the grout and construction difficulties. Therefore, a well pipe grouting reverse stop device that can adjust the resistance of the reverse stop device is needed. Content of the Utility Model

[0003] In view of the above technical problems existing in the prior art, the utility model provides a well pipe grouting reverse stop device, which can adjust the resistance of the grout and can still transport the grout under the conditions of small flow rate and small alternating impact force.

[0004] The utility model discloses a well pipe grouting reverse stop device, which includes a base, an adjusting mechanism and a reverse stop mechanism. The adjusting mechanism includes a screw rod, a blocking block and a threaded ring matching with the screw rod. The blocking block is installed at the lower end of the screw rod. The base is provided with an adjusting cavity. The threaded ring is fixed on the upper side of the adjusting cavity. The blocking block is movably installed in the adjusting cavity. An input port is arranged at the lower side of the adjusting cavity, and an output port is arranged at one side. The reverse stop mechanism is installed at the output port.

[0005] Preferably, it further includes a compression spring. One end of the compression spring is installed on the screw rod, and the blocking block is installed at the other end of the compression spring.

[0006] Preferably, an adjusting block, a handle or an electric adjusting mechanism is installed at the upper end of the screw rod.

[0007] The output end of the electric adjusting mechanism is connected to the screw rod.

[0008] Preferably, when the blocking block moves to the lower side of the adjusting cavity, it blocks the output port.

[0009] When the blocking block moves upward from the lower side, part or all of the output port is exposed.

[0010] Preferably, a grouting pipe is arranged at the output port, and the reverse stop mechanism is installed on the grouting pipe.

[0011] Preferably, the reverse stop mechanism includes an installation frame, an extension plate, a reverse stop plate and an extrusion spring.

[0012] The installation frame is installed inside the grouting pipe, and the extension plate is installed on the downstream side of the installation frame;

[0013] A limiting ring that cooperates with the check plate is provided on the installation frame;

[0014] The compression spring is installed between the extension plate and the check plate;

[0015] The elastic force of the compression spring is less than that of the compression spring.

[0016] Preferably, a transmission pipe is provided on the input port, and the transmission pipe is connected to the connecting pipe upstream.

[0017] Preferably, the connecting pipe is installed at one end of the transmission pipe through an installation mechanism;

[0018] The installation mechanism includes a connecting sleeve and a threaded cylinder that cooperates with the connecting sleeve,

[0019] The connecting sleeve and the threaded cylinder are respectively installed on the transmission pipe and the connecting pipe.

[0020] Preferably, an installation box is provided on one side of the connecting sleeve, a reminder rod is movably installed in the installation box, and the inner end of the reminder rod extends towards the inside of the connecting sleeve.

[0021] Preferably, a limiting ring is provided inside the installation box, and a return spring is provided between the reminder rod and the connecting sleeve;

[0022] A waterproof ring that cooperates with the connecting pipe is provided at one end of the transmission pipe;

[0023] An installation sleeve is provided on one side of the threaded cylinder, and a plurality of anti-slip blocks are provided at intervals on the outer side of the installation sleeve;

[0024] The threaded cylinder and the installation sleeve are an integral part;

[0025] A limiting platform is installed at one end of the connecting pipe, and the threaded cylinder is rotatably installed on one side of the limiting platform.

[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the cooperation of the screw rod and the threaded ring of the adjustment mechanism, the height of the blocking block in the adjustment cavity is adjusted, and the opening degree of the output port is adjusted, thereby adjusting the resistance and flow rate of the well pipe grouting check device. In the case of high grouting pressure and large flow rate, the opening degree is reduced by the screw rod and the blocking block to increase the resistance and flow rate; in the later stage of grouting, when the grouting pressure and flow rate gradually decrease, the height of the blocking block is adjusted upward to increase the opening degree of the output port, ensuring that the slurry can still pass through sequentially, avoiding slurry waste, reducing the construction difficulty, and improving the controllability of the grouting process. Brief Description of the Drawings

[0027] Figure 1 is the installation schematic diagram of the well pipe grouting check valve device of the present utility model;

[0028] Figure 2 is the partial sectional view of the well pipe grouting check valve device;

[0029] Figure 3 is the installation schematic diagram of the check valve plate;

[0030] Figure 4 is the structural schematic diagram of the installation mechanism;

[0031] Figure 5 is the installation schematic diagram of the indicating rod.

[0032] Markings in the figure:

[0033] 1 connecting pipe, 2 base, 21 input port, 22 output port, 23 adjustment cavity, 3 transmission pipe; 4 grouting pipe;

[0034] 5 installation mechanism, 501 installation sleeve, 502 anti-slip block, 503 threaded cylinder, 504 waterproof ring, 505 installation box, 506 reminder rod, 507 limiting ring, 508 return spring, 509 connecting sleeve;

[0035] 6 adjustment mechanism, 601 adjustment block, 602 screw rod, 603 threaded ring, 604 compression spring, 605 blocking block,

[0036] 7 check valve mechanism, 701 check valve plate, 702 extension plate, 703 limiting ring, 704 installation frame, 705 extrusion spring. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] The following makes a further detailed description of the present utility model with reference to the accompanying drawings:

[0039] A well pipe grouting check valve device, as Figures 1-5As shown, it includes a base 2, an adjustment mechanism 6 and a check mechanism 7. The adjustment mechanism 6 includes a screw rod 602, a blocking block 605 and a thread ring 603 that cooperates with the screw rod 602. The blocking block 605 is installed at the lower end of the screw rod 602; the base 2 is provided with an adjustment cavity 23, the thread ring 603 is fixed on the upper side of the adjustment cavity 23, and the blocking block 605 is movably installed in the adjustment cavity 23; an input port 21 is provided on the lower side of the adjustment cavity 23, and an output port 22 is provided on one side, and the check mechanism 7 is installed at the output port 22.

[0040] Through the cooperation of the screw rod and the thread ring of the adjustment mechanism 6, the height of the blocking block 605 in the adjustment cavity 23 is adjusted, and the opening degree of the output port 22 is adjusted, so as to adjust the resistance and flow rate of the well pipe grouting check device. In the case of high grouting pressure and large flow rate, the opening degree is reduced by the screw rod and the blocking block 605 to increase the resistance and flow rate; in the later stage of grouting, when the grouting pressure and flow rate gradually decrease, the height of the blocking block is adjusted upward to increase the opening degree of the output port, ensuring that the slurry can still pass through in sequence, avoiding slurry waste, reducing the construction difficulty, and improving the controllability of the grouting process. It can effectively adjust the pressure and flow rate of the slurry output by the grouting pipe 4.

[0041] As Figure 2 A compression spring 604 is also shown. One end of the compression spring 604 is installed on the screw rod 602, and the adjustment block 601 is installed at the other end of the compression spring 604 to provide a certain buffering effect.

[0042] When the blocking block 605 moves to the lower side of the adjustment cavity 23, it blocks the output port 22; when the blocking block 605 moves upward from the lower side, part or all of the output port 22 is exposed.

[0043] When the grouting pressure is less than the elastic force of the compression spring 604, the output port will be closed. The slurry is sent into the interior of the connecting pipe 1, and the connecting pipe 1 sends the slurry into the interior of the transmission pipe 3. The acting force of the slurry pushes the blocking block 605 upward. In this process, the blocking block 605 will compress the compression spring 604 at its top. As the blocking block 605 continues to rise, when its height exceeds the output port, the slurry with impact force will push the check mechanism 7 to open it, and then enter the interior of the grouting pipe 4 to complete the grouting process. When the impact force of the slurry weakens and is no longer sufficient to maintain grouting, the adjustment handle 601 can be rotated. The function of the adjustment handle 601 is to drive the compression spring 604 to rise, and then push the blocking block 605 to move upward as well. This series of actions makes the blocking block 605 no longer tightly seal the grouting pipe 4, allowing the remaining slurry to flow into the grouting pipe 4 through the check mechanism 7. This not only ensures the continuity of grouting, but also reduces slurry waste and improves grouting efficiency.

[0044] An adjustment block 601, a handle or an electric adjustment mechanism is installed at the upper end of the screw rod 602. The opening degree of the output port 22 can be manually adjusted by means of the adjustment block 601 or the handle. It can also be adjusted by an electric drive method. The output end of the electric adjustment mechanism (not shown in the figure) is connected to the screw rod 602.

[0045] As Figure 2 and Figure 3 shown, a grouting pipe 4 is provided at the output port, and the check mechanism 7 is installed on the grouting pipe 4. The check mechanism 7 can adopt the structure of an existing check valve.

[0046] In a specific design, the check mechanism 7 includes a mounting frame 704, an extension plate 702, a check plate 701 and a compression spring 705; the mounting frame 704 is installed inside the grouting pipe 4, and the extension plate 702 is installed on the downstream side of the mounting frame 704; a limiting ring 703 cooperating with the check plate 701 is provided on the mounting frame 704; the compression spring 705 is installed between the extension plate 702 and the check plate 701.

[0047] In the case of no load or when the grouting pressure is less than the pressure of the compression spring, the check plate 701 cooperates with the limiting ring 703 to block the mounting frame, playing a check role. The elastic force of the compression spring 705 should be less than the elastic force of the compression spring 604; so that the slurry passing through the adjustment mechanism 6 can also pass through the check mechanism 7 smoothly.

[0048] As Figure 1 and 4 shown, a transmission pipe 3 is provided on the input port 21, and the transmission pipe 3 is connected to the upstream connecting pipe 1. The connecting pipe 1 is installed at one end of the transmission pipe 3 through the mounting mechanism 5; the mounting mechanism 5 includes a connecting sleeve 509 and a threaded cylinder 503 cooperating with the connecting sleeve 509, and the connecting sleeve 509 and the threaded cylinder 503 are respectively installed on the transmission pipe 3 and the connecting pipe 1.

[0049] As Figure 5 shown, an installation box 505 is provided on one side of the connecting sleeve 509, a reminder rod 506 is movably installed in the installation box 505, and the inner end of the reminder rod 506 extends towards the inside of the connecting sleeve 509. When the threaded cylinder engages inside the connecting sleeve 509, it jacks up the reminder rod 506. The reminder rod 506 is used to indicate the successful installation of the threaded cylinder and the connecting sleeve 509.

[0050] More specifically, a limiting ring 507 is provided inside the installation box 505, and a return spring 508 is provided between the limiting ring 507 and the reminder rod 506. When the threaded cylinder 503 is removed, the return spring 508 pushes the reminder rod 506 to reset and move downward. When observed from the outside, the reminder rod cannot be seen or the reminder rod is seen to shorten, indicating to the staff that the connecting pipe 1 and the transmission pipe 3 are not successfully connected.

[0051] One end of the transmission pipe 3 is provided with a waterproof ring 504 that cooperates with the connecting pipe 1; one side of the threaded cylinder 503 is provided with an installation sleeve 501, and a plurality of anti-slip blocks 502 are arranged at intervals on the outside of the installation sleeve 501; the threaded cylinder 503 and the installation sleeve 501 are an integral part; one end of the connecting pipe 1 is installed with a limiting platform (not shown in the figure), and the threaded cylinder 503 is rotatably installed on one side of the limiting platform.

[0052] When it is necessary to install the connecting pipe 1 and the transmission pipe 3, only need to align and align the installation sleeve 501 with the connecting sleeve 509; then rotate the threaded cylinder 503 to make it tightly combined with the threaded part of the connecting sleeve 509. In this process, one end of the threaded cylinder 503 will squeeze the reminder rod 506, making it slide upward and pass through the installation box 505. This action indicates to the staff that the threaded cylinder 503 and the connecting sleeve 509 have been correctly installed, and the waterproof ring 504 is located at the connection, which can effectively prevent moisture or other external substances from penetrating, ensuring the waterproof performance of the entire connection part.

[0053] Through the provided adjusting mechanism, the acting force of the slurry will push the blocking block upward. As the blocking block continuously rises, when its height exceeds one end of the grouting pipe, the slurry with impact force will push the check valve plate to open it, and then enter the inside of the grouting pipe to complete the grouting process. When the impact force of the slurry weakens and is no longer sufficient to maintain grouting, the operator can rotate the adjusting block or the handle. The function of the adjusting handle is to drive the compression spring to rise, and then push the blocking block to move upward as well. This series of actions makes the blocking block no longer tightly seal the grouting pipe, allowing the remaining slurry to flow into the grouting pipe through the check valve plate. This not only ensures the continuity of grouting, but also reduces the waste of slurry and improves the grouting efficiency.

[0054] Through the provided installation mechanism, when the user needs to install the connecting pipe and the transmission pipe, only need to align and align the installation sleeve with the connecting sleeve, and then rotate the threaded cylinder to make it tightly combined with the threaded part of the connecting sleeve. In this process, one end of the threaded cylinder will squeeze the reminder rod, making it slide upward and pass through the multifunctional installation box. This action indicates to the staff that the threaded cylinder and the connecting sleeve have been correctly installed, and the waterproof ring is located at the connection, which can effectively prevent moisture or other external substances from penetrating, ensuring the waterproof performance of the entire connection part and reducing the probability of misoperation.

[0055] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A well pipe grouting check device, characterized in that: It comprises a base (2), an adjusting mechanism (6) and a check mechanism (7), The adjusting mechanism (6) comprises a screw (602), a blocking block (605) and a threaded ring (603) matched with the screw (602). The blocking block (605) is mounted on the lower end of the screw (602); The base (2) is provided with an adjustment cavity (23), the threaded ring (603) is fixed on the upper side of the adjustment cavity (23), and the blocking block (605) is movably installed in the adjustment cavity (23); The regulating chamber (23) is provided with an input port (21) on the lower side and an output port (22) on one side. The check mechanism (7) is installed at the output port (22).

2. The well pipe grouting check device according to claim 1, characterized in that: Also included is a compression spring (604), One end of the compression spring (604) is mounted on the screw (602). The blocking block (605) is mounted on the other end of the compression spring (604).

3. The well pipe grouting check device according to claim 2, characterized in that: The upper end of the screw (602) is equipped with an adjustment block (601), a handle or an electric adjustment mechanism. The output end of the electric adjustment mechanism is connected to the screw (602).

4. The well pipe grouting check device according to claim 2, characterized in that: When the blocking block (605) moves to the lower side of the regulating cavity (23), it blocks the output port (22); When the blocking block (605) moves upward from the lower side, the output port is partially or completely exposed.

5. The well pipe grouting check device according to claim 2, characterized in that: The output port is provided with a grouting pipe (4), and the check mechanism (7) is installed on the grouting pipe (4).

6. The well pipe grouting check device according to claim 5, characterized in that: The check mechanism (7) comprises a mounting frame (704), an extension plate (702), a check plate (701) and a compression spring (705); The installation frame (704) is installed on the inner side of the grouting pipe (4), and the extension plate (702) is installed on the downstream side of the installation frame (704); The installation frame (704) is provided with a limiting ring (703) that matches the check plate (701); The extrusion spring (705) is installed between the extension plate (702) and the check plate (701); The elastic force of the extrusion spring (705) is smaller than the elastic force of the compression spring (604).

7. The well pipe grouting check device according to claim 1, characterized in that: A transmission pipe (3) is provided on the input port (21), and the transmission pipe (3) is connected to the upstream connecting pipe (1).

8. The well pipe grouting check device according to claim 7, characterized in that: The connecting pipe (1) is installed on one end of the transmission pipe (3) through a mounting mechanism (5); The mounting mechanism (5) comprises a connecting sleeve (509) and a threaded cylinder (503) matched with the connecting sleeve (509). The connecting sleeve (509) and the threaded cylinder (503) are respectively installed on the transmission pipe (3) and the connecting pipe (1).

Images