Grouting stop valve for post-grouting of pile bottom

Abstract

The utility model discloses a grout stopping valve for post-grouting of a pile bottom, and relates to the technical field of grout stopping valves. The grout stopping valve for post-grouting of the pile bottom comprises a valve pipe joint, a grouting pipe is arranged at the top of the valve pipe joint, a bearing mechanism is arranged in the valve pipe joint, and a grout stopping mechanism is arranged in the valve pipe joint. According to the grout stopping valve for post-grouting of the pile bottom, by arranging the grout stopping piece, when the valve pipe joint needs to be opened during grouting and closed when grouting is stopped, firstly, a grouting hole is formed in a bearing disc in the valve pipe joint so that grout can conveniently pass through, and the grout stopping piece, a limiting piece and a spring are arranged outside a sliding rod; during grouting, the grout stopping piece makes contact with the bottom of the bearing disc through the tension of the spring, the bearing disc is in a closed state, during grouting, the grout stopping piece slides downwards through impact of grout, the spring is compressed, at the moment, the grout flows to the bottom of the grout stopping piece through the grouting hole, and the valve pipe joint can be conveniently opened during grouting and closed when grouting is stopped through the device.

Description

Technical Field

[0001] The utility model belongs to the technical field of grout-stop valves, and particularly relates to a grout-stop valve for post-grouting at the bottom of a pile. Background Art

[0002] During the implementation of engineering construction, post-grouting reinforcement measures are often taken due to weak foundation bearing capacity, insufficient skin friction of friction piles to support the upper load, etc., to improve the foundation and foundation bearing capacity.

[0003] The above device does not have a structure for preventing blockage and self-opening and closing grouting at the bottom end of the grouting pipe during use, so that the conventional grouting process uses drilling grouting. Considering the long drilling length and difficult to ensure the verticality, it is feared that the purpose of grouting cannot be achieved. And pre-burying the traditional grouting pipe in advance will cause the bottom of the pipe to be blocked by concrete when pouring the pile foundation concrete, and the purpose of grouting cannot be achieved. Based on the existing technical deficiencies, the utility model designs a grout-stop valve for post-grouting at the bottom of a pile. Summary of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides a grout-stop valve for post-grouting at the bottom of a pile, which has the characteristics of preventing blockage and self-opening and closing grouting at the bottom end of the grouting pipe.

[0005] To achieve the above object, the utility model provides the following technical solutions: A grout-stop valve for post-grouting at the bottom of a pile, comprising a valve pipe section, a grouting pipe is arranged at the top of the valve pipe section, a bearing mechanism is arranged inside the valve pipe section, and a grout-stop mechanism is arranged inside the valve pipe section;

[0006] The grout-stop mechanism, the grout-stop mechanism includes a grout-stop piece, a sliding rod, a limiting piece and a spring, the grout-stop piece is arranged inside the valve pipe section, the top of the grout-stop piece is fixedly connected with the sliding rod, the top of the sliding rod is fixedly connected with the limiting piece, and the outer surface of the sliding rod is movably sleeved with the spring.

[0007] As a preferred technical solution of the grout-stop valve for post-grouting at the bottom of a pile of the utility model, a first connecting head is fixedly connected to the top of the valve pipe section, a first threaded groove is opened inside the first connecting head, a second connecting head is fixedly connected to the lower surface of the valve pipe section, and a second threaded groove is opened inside the second connecting head.

[0008] As a preferred technical solution of the grout-stop valve for post-grouting at the bottom of a pile of the utility model, a threaded pipe is opened at the bottom of the grouting pipe, and the grouting pipe is threadedly connected inside the first connecting head.

[0009] As a preferred technical solution of the grout stop valve for post - grouting at the bottom of the pile of the present utility model, the bearing mechanism includes a grouting groove, a bearing plate, grouting holes and sliding holes. The grouting groove is opened inside the valve pipe joint. A bearing plate is fixedly connected inside the grouting groove. The upper surface of the bearing plate is provided with grouting holes, and the upper surface of the bearing plate is provided with sliding holes.

[0010] As a preferred technical solution of the grout stop valve for post - grouting at the bottom of the pile of the present utility model, the grout stop piece is slidably connected inside the grouting groove and is slidably connected to the lower surface of the bearing plate.

[0011] As a preferred technical solution of the grout stop valve for post - grouting at the bottom of the pile of the present utility model, the sliding rod is slidably connected inside the sliding hole, and the limiting piece is slidably connected to the top of the bearing plate.

[0012] As a preferred technical solution of the grout stop valve for post - grouting at the bottom of the pile of the present utility model, the spring is movably clamped on the upper surface of the bearing plate and is arranged inside the grouting groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. When the present utility model is in use, by setting the grout stop piece, when it is required to open the valve pipe joint during grouting and close it when grouting stops, first, a bearing plate is fixed inside the valve pipe joint. Grouting holes are opened on the bearing plate to facilitate the passage of grout. At the same time, a sliding rod is connected. A grout stop piece, a limiting piece and a spring are arranged outside the sliding rod. Due to the tension of the spring, the grout stop piece contacts the bottom of the bearing plate, making the bearing plate in a closed state. During grouting, the impact of the grout causes the grout stop piece to slide downward, and the spring is compressed. At this time, the grout flows through the grouting holes to the bottom of the grout stop piece, thus facilitating grouting. This device facilitates the opening of the valve pipe joint during grouting and closing when grouting stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the valve pipe joint of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the grouting pipe of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the first connecting head of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the bearing mechanism of the present utility model;

[0020] Figure 5 This is a schematic structural diagram of the grout stopping mechanism of the present utility model.

[0021] In the figure: 1. Valve pipe section; 101. First connecting head; 102. First thread groove; 103. Second connecting head; 104. Second thread groove; 2. Grouting pipe; 201. Threaded pipe; 3. Bearing mechanism; 301. Grouting groove; 302. Bearing plate; 303. Grouting hole; 304. Slide hole; 4. Grout stopping mechanism; 401. Grout stopping piece; 402. Slide rod; 403. Limiting piece; 404. Spring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figures 1-5 , the present utility model provides the following technical solutions: A grout stopping valve for post - grouting at the bottom of a pile, including a valve pipe section 1, a grouting pipe 2 is arranged at the top of the valve pipe section 1, a bearing mechanism 3 is arranged inside the valve pipe section 1, and a grout stopping mechanism 4 is arranged inside the valve pipe section 1;

[0025] A first connecting head 101 is fixedly connected to the top of the valve pipe section 1, a first thread groove 102 is opened inside the first connecting head 101, a second connecting head 103 is fixedly connected to the lower surface of the valve pipe section 1, and a second thread groove 104 is opened inside the second connecting head 103.

[0026] A threaded pipe 201 is opened at the bottom of the grouting pipe 2, and the grouting pipe 2 is threadedly connected inside the first connecting head 101.

[0027] It needs to be further explained that: The grouting pipe 2 is installed inside the first connecting head 101 fixed at the top of the valve pipe section 1 through the threaded pipe 201. A bearing mechanism 3 and a grout stopping mechanism 4 are arranged inside the valve pipe section 1. By setting the bearing mechanism 3 and the grout stopping mechanism 4, an opening and closing channel is formed inside the valve pipe section 1 to facilitate the realization of grouting matters.

[0028] Embodiment 2

[0029] Please refer to Figures 3-5 , the present utility model provides the following technical solutions:

[0030] The grout stopping mechanism 4 includes a grout stopping piece 401, a sliding rod 402, a limiting piece 403, and a spring 404. The grout stopping piece 401 is arranged inside the valve pipe section 1. The top of the grout stopping piece 401 is fixedly connected to the sliding rod 402. The top of the sliding rod 402 is fixedly connected to the limiting piece 403. The outer surface of the sliding rod 402 is movably sleeved with the spring 404.

[0031] The bearing mechanism 3 includes a grouting groove 301, a bearing plate 302, grouting holes 303, and sliding holes 304. The grouting groove 301 is opened inside the valve pipe section 1. The bearing plate 302 is fixedly connected inside the grouting groove 301. The upper surface of the bearing plate 302 is provided with the grouting holes 303. The upper surface of the bearing plate 302 is provided with the sliding holes 304.

[0032] The grout stopping piece 401 is slidably connected inside the grouting groove 301 and is slidably connected to the lower surface of the bearing plate 302.

[0033] The sliding rod 402 is slidably connected inside the sliding hole 304, and the limiting piece 403 is slidably connected to the top of the bearing plate 302.

[0034] The spring 404 is movably clamped to the upper surface of the bearing plate 302 and is arranged inside the grouting groove 301.

[0035] It should be further explained that: The bearing plate 302 is fixed in the grouting groove 301 inside the valve pipe section 1. A number of grouting holes 303 are opened on the bearing plate 302, which facilitates the passage of the grout. A sliding hole 304 is also opened in the middle part of the bearing plate 302, which facilitates the connection of the sliding rod 402. The grout stopping piece 401, the limiting piece 403, and the spring 404 are arranged outside the sliding rod 402. Due to the tension of the spring 404, the grout stopping piece 401 contacts the bottom of the bearing plate 302, making the bearing plate 302 in a closed state. During grouting, the impact of the grout causes the grout stopping piece 401 to slide downward, and the spring 404 is compressed. At this time, the grout flows to the bottom of the grout stopping piece 401 through the grouting holes 303, thus facilitating grouting.

[0036] Working principle: When a grout stopping valve for post-grouting at the bottom of a pile is in use, first, the grouting pipe 2 is installed inside the connecting head 101 fixed at the top of the valve pipe section 1 through the threaded pipe 201. The bearing mechanism 3 and the grout stopping mechanism 4 are arranged inside the valve pipe section 1. By setting the bearing mechanism 3 and the grout stopping mechanism 4, an opening and closing channel is formed inside the valve pipe section 1 to facilitate the realization of grouting.

[0037] When the valve pipe section 1 needs to be opened during grouting and closed when grouting stops, first, a bearing plate 302 is fixed in the grouting groove 301 inside the valve pipe section 1. A number of grouting holes 303 are provided on the bearing plate 302 to facilitate the passage of the grout. A sliding hole 304 is also provided in the middle part of the bearing plate 302 to facilitate the connection of the sliding rod 402. A grout stop piece 401, a limiting piece 403 and a spring 404 are arranged outside the sliding rod 402. Due to the tension of the spring 404, the grout stop piece 401 contacts the bottom of the bearing plate 302, making the bearing plate 302 in a closed state. During grouting, the impact of the grout causes the grout stop piece 401 to slide downward, and the spring 404 is compressed. At this time, the grout flows to the bottom of the grout stop piece 401 through the grouting holes 303, thus facilitating grouting. This device facilitates the opening of the valve pipe section 1 during grouting and closing when grouting stops.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grout-stop valve for post-grouting at the bottom of a pile, comprising a valve pipe section (1), characterized in that: A grouting pipe (2) is arranged on the top of the valve pipe section (1), a bearing mechanism (3) is arranged inside the valve pipe section (1), and a grouting stop mechanism (4) is arranged inside the valve pipe section (1); A slurry stopping mechanism (4), the slurry stopping mechanism (4) comprising a slurry stopping plate (401), a sliding rod (402), a limiting plate (403) and a spring (404), the slurry stopping plate (401) being arranged inside the valve pipe section (1), the top of the slurry stopping plate (401) being fixedly connected to the sliding rod (402), the top of the sliding rod (402) being fixedly connected to the limiting plate (403), and the outer surface of the sliding rod (402) being movably sleeved with a spring (404).

2. A grout stop valve for post-grouting at the pile bottom according to claim 1, characterized in that: The top of the valve pipe section (1) is fixedly connected to a connector head 1 (101), and a thread groove 1 (102) is provided inside the connector head 1 (101). The lower surface of the valve pipe section (1) is fixedly connected to a connector head 2 (103), and a thread groove 2 (104) is provided inside the connector head 2 (103).

3. A grout stop valve for post-grouting at the pile bottom according to claim 1, characterized in that: A threaded pipe (201) is provided at the bottom of the grouting pipe (2), and the grouting pipe (2) is threadedly connected to the inside of the first connector (101).

4. A grout stop valve for post-grouting at the pile bottom according to claim 1, characterized in that: The bearing mechanism (3) comprises a grouting groove (301), a bearing plate (302), a grouting hole (303) and a sliding hole (304); the grouting groove (301) is arranged inside the valve pipe joint (1); the bearing plate (302) is fixedly connected inside the grouting groove (301); the upper surface of the bearing plate (302) is provided with a grouting hole (303); and the upper surface of the bearing plate (302) is provided with a sliding hole (304).

5. The grout-stop valve for post-grouting at the pile bottom according to claim 1, characterized in that: The grout-stopping plate (401) is slidably connected to the inside of the grouting groove (301), and the grout-stopping plate (401) is slidably connected to the lower surface of the supporting plate (302).

6. The grout-stop valve for post-grouting at the pile bottom according to claim 1, characterized in that: The sliding rod (402) is slidably connected to the inside of the sliding hole (304), and the limiting plate (403) is slidably connected to the top of the carrying plate (302).

7. The grout-stop valve for post-grouting at the pile bottom according to claim 1, characterized in that: The spring (404) is movably clamped on the upper surface of the carrier plate (302), and the spring (404) is arranged inside the grouting groove (301).

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