Foundation pit grouting device
By integrating stirring, liquid and powder addition and slurry concentration detection mechanism in the foundation pit grouting device, the problem that traditional grouting machines cannot adjust the slurry concentration is solved, and the rapid adjustment and pressure control of slurry concentration is achieved, which improves the injection The convenience of pulp operation.
Patent Information
- Application Number
- CN202420996125.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-09
AI Technical Summary
Traditional foundation pit grouting machines lack raw material configuration devices, which makes it difficult to adjust the slurry concentration during grouting and cannot adjust the pressure control in real time.
A foundation pit grouting device is designed, including a stirring mechanism, a liquid and powder addition mechanism, and a slurry concentration detection mechanism, allowing the slurry concentration to be directly adjusted on site and grouting operations are performed through a grouting pump.
The rapid adjustment of slurry concentration and pressure control are achieved, the grouting operation is simplified, and the complexity of on-site operation and the trouble of raw material transportation is reduced.
Smart Images
Figure CN222349697U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of foundation pit construction, and in particular relates to a foundation pit grouting device. Background Art
[0002] The foundation pit is an earth pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. During the foundation pit construction process, the foundation pit needs to be grouted to achieve the construction of the pile foundation pedestal or the bottom seal of the foundation pit.
[0003] When grouting is performed, grouting is generally performed by a grouting machine. The slurry injected is generally a cement mixed slurry, which is a slurry formed by mixing water, cement and retarder in a certain weight according to the design requirements. However, the traditional grouting machine does not have its own raw material configuration device, and it is necessary to use a vehicle to pull the prepared raw materials from a distance before grouting, which is more troublesome.
[0004] Secondly, in grouting construction, the pressure of slurry injection is the most critical control factor of the on-site construction process. The basic development status of the grouting construction can be judged according to the change of the orifice pressure displayed by the flow meter. If abnormal pressure occurs, that is, corresponding adverse conditions occur, the concentration of the slurry needs to be adjusted to solve the corresponding situation, but the existing grouting machine cannot directly adjust the concentration of the slurry. Utility Model Content
[0005] The utility model provides a foundation pit grouting device to solve the above technical problems.
[0006] The technical solution adopted by the utility model is as follows:
[0007] A foundation pit grouting device comprises a placing frame, a grouting pump is provided on the placing frame, a feeding pipeline and a grouting pipeline are connected to the grouting pump, a slurry barrel is provided on the placing frame, a stirring mechanism for stirring slurry is provided inside the slurry barrel; the bottom of the slurry barrel is connected to the feeding pipeline; a liquid adding mechanism for adding liquid and connected to the slurry barrel is provided on the placing frame; a powder adding mechanism for adding cement and connected to the slurry barrel is also provided on the placing frame; a detection mechanism for detecting slurry concentration is provided above the slurry barrel.
[0008] Preferably, a support plate is provided on the top of the slurry barrel, and the support plate is fixedly connected to the placement frame through a vertical rod; the stirring mechanism includes a motor arranged on the support plate, the output end of the motor passes through the bottom of the support plate and is connected to a rotating shaft, the rotating shaft extends into the interior of the slurry barrel, and a plurality of stirring shafts are vertically arranged on the outside of the rotating shaft.
[0009] Preferably, the stirring shafts are staggered along the rotation axis in the vertical direction.
[0010] Preferably, the bottom of the slurry barrel is arranged in a funnel shape, and the bottom end of the stirring shaft is provided with a groove rake that cooperates with the inner side of the bottom of the slurry barrel; a plurality of guide scrapers are arranged in parallel at equal distances at the bottom of the groove rake, and each of the guide scrapers is arranged obliquely with respect to the groove rake.
[0011] Preferably, the angle between the side surface of the guide scraper and the length direction of the bottom edge of the groove rake is in the range of 15° to 45°.
[0012] Preferably, the liquid adding mechanism includes a water tank arranged on the placement rack, a water pump is provided on the top of the water tank, a water pump is connected to the water pump is connected to a water inlet pipe, the bottom end of the water inlet pipe extends into the inner bottom end of the water tank; the water outlet of the water pump is connected to the interior of the slurry barrel and is arranged at a position close to the top of the slurry barrel.
[0013] Preferably, the powder adding mechanism comprises a powder box arranged on the placement rack, the bottom end of the powder box is connected to a screw conveyor, and the discharge port of the screw conveyor is arranged above the slurry barrel.
[0014] Preferably, the detection mechanism comprises a conductivity meter disposed on the support plate, and a probe of the conductivity meter penetrates below the support plate and penetrates into the interior of the slurry barrel.
[0015] Preferably, an auxiliary feeding port is provided on the support plate, and an opening and closing plug is detachably connected to the auxiliary feeding port.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0017] 1. First, according to the design requirements, cement or other additives are added into the slurry barrel through the powder adding mechanism, water is added into the slurry barrel through the liquid adding mechanism, and stirred through the stirring mechanism, and the slurry concentration is detected by the detection mechanism, so as to prepare the slurry with the concentration meeting the design requirements; then the grouting operation is carried out through the grouting pump, and there is no need to use a vehicle to pull the prepared raw materials from a distance and then carry out the grouting, which is very convenient.
[0018] 2. When corresponding situations occur during the grouting process, the staff can start the powder adding mechanism to add cement or additives to increase the concentration, and can fine-tune the concentration through the liquid adding mechanism, and then detect the slurry concentration through the detection mechanism, so as to directly adjust the slurry concentration, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention will be described by way of examples with reference to the accompanying drawings, in which:
[0020] Figure 1 It is a front structural schematic diagram of a foundation pit grouting device in the utility model;
[0021] Figure 2 It is a side structural schematic diagram of a foundation pit grouting device in the utility model.
[0022] Among them: 1-placing rack, 2-grouting pump, 3-feeding pipeline, 4-grouting pipeline, 5-slurry cylinder, 6-support plate, 7-vertical rod, 8-motor, 9-rotating shaft, 10-mixing shaft, 11-trough rake, 12-guide scraper, 13-water tank, 14-water pump, 15-water inlet pipe, 16-water outlet, 17-powder box, 18-screw conveyor, 19-discharge port, 20-conductivity meter, 21-probe, 22-auxiliary feeding port, 23-opening and closing plug, 24-pressure gauge, 25-stop valve. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiment is only a piece of embodiment of the present application, rather than a full piece of embodiment. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.
[0024] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0025] Combine the following Figure 1-2 The utility model is described in detail.
[0026] Example:
[0027] A foundation pit grouting device, in some embodiments, such as Figures 1-2As shown, it includes a placement rack 1, on which a grouting pump 2 is provided, and on which a pressure gauge 24 is provided; the grouting pump 2 is connected to a feed pipeline 3 and a grouting pipeline 4, and on which a slurry barrel 5 is provided, and inside of the slurry barrel 5 a stirring mechanism for stirring the slurry is provided; the bottom of the slurry barrel 5 is connected to the feed pipeline 3, and a stop valve 25 is provided between the slurry barrel 5 and the feed pipeline 3; the placement rack 1 is provided with a liquid adding mechanism for adding liquid and connected to the slurry barrel 5; the placement rack 1 is also provided with a powder adding mechanism for adding cement and connected to the slurry barrel 5; a detection mechanism for detecting the slurry concentration is provided above the slurry barrel.
[0028] During specific use, firstly, cement or other additives are added into the slurry barrel 5 through the powder adding mechanism according to the design requirements, water is added into the slurry barrel 5 through the liquid adding mechanism, and stirred by the stirring mechanism, and the slurry concentration is detected by the detection mechanism, so as to prepare the slurry with the concentration meeting the design requirements; then the grouting operation is carried out through the grouting pump 2, and there is no need to use a vehicle to pull the prepared raw materials from a distance and then carry out the grouting, which is very convenient.
[0029] During the grouting process, if the pressure gradually rises but does not reach the design pressure, the reasons are: low slurry concentration, long gel time, slurry forms splitting veins in the gravel or part of the slurry overflows, and the slurry concentration is appropriately increased and grouting is performed at short time intervals. If the pressure does not rise after the start of grouting, or even the initial pressure shows a downward trend, the reason is: it indicates that the slurry has overflowed. At this time, a high-concentration slurry and a lower injection speed are used. If the situation does not change, stop grouting first. When the above situation occurs, the staff can start the powder adding mechanism to add cement or additives to increase the concentration, and can fine-tune the concentration through the liquid adding mechanism, and then detect the slurry concentration through the detection mechanism, so as to directly adjust the concentration of the slurry, which is convenient and quick. It is worth mentioning that during the stirring and concentration adjustment process, the stop valve 25 should be closed.
[0030] In some embodiments, Figures 1-2 As shown, a support plate 6 is provided on the top of the slurry barrel 5, and the support plate 6 is fixedly connected to the placement frame 1 through a vertical rod 7; the stirring mechanism includes a motor 8 arranged on the support plate 6, and the output end of the motor 8 passes through the bottom of the support plate 6 and is connected to a rotating shaft 9, and the rotating shaft 9 extends deep into the interior of the slurry barrel 5, and a plurality of stirring shafts 10 are vertically arranged on the outer side of the rotating shaft 9.
[0031] When in use, the motor 8 is started to drive the rotating shaft 9 to rotate, and then the rotating shaft 9 is driven to rotate, so that the multiple stirring shafts 10 can fully stir and mix the raw materials to obtain a uniformly mixed grouting slurry.
[0032] In some embodiments, Figures 1-2 As shown, the stirring shafts 10 are staggered along the rotating shaft 9 in the vertical direction, thereby improving the efficiency of uniform stirring and the stirring effect.
[0033] In some embodiments, Figures 1-2 As shown, the bottom of the slurry barrel 5 is arranged in a funnel shape, and the bottom end of the stirring shaft 10 is provided with a groove rake 11 that cooperates with the inner side of the bottom of the slurry barrel 5; a plurality of guide scrapers 12 are arranged in parallel at equal distances at the bottom of the groove rake 11, and each of the guide scrapers 12 is arranged obliquely with the groove rake 11.
[0034] By setting the bottom of the slurry barrel 5 into a funnel shape, the slurry at the bottom of the slurry barrel 5 can enter the feed pipeline 3 at the bottom of the slurry barrel 5 under the action of gravity, thereby preventing the slurry from accumulating at the bottom of the slurry barrel 5; the trough rake 11 and the guide scraper 12 are used to prevent the slurry from drying at the bottom of the slurry barrel 5 and affecting the material from entering the feed pipeline 3.
[0035] In some embodiments, Figures 1-2 As shown, the angle between the side of the guide scraper 12 and the length direction of the bottom edge of the groove rake 11 is 45°, so that the guide scraper 12 can guide the material at the bottom of the slurry barrel 5 to flow into the feed pipeline 3 during the rotation of the rotating shaft 9.
[0036] In some embodiments, Figures 1-2 As shown, the liquid adding mechanism includes a water tank 13 arranged on the placement rack 1, and a water pump 14 is provided on the top of the water tank 13. The water pump 14 is connected to a water inlet pipe 15, and the bottom end of the water inlet pipe 15 extends into the bottom end of the water tank 13; the water outlet 16 of the water pump 14 is connected to the interior of the slurry barrel 5 and is arranged at a position close to the top of the slurry barrel 5.
[0037] In some embodiments, Figures 1-2 As shown, the powder adding mechanism includes a powder box 17 arranged on the placement rack 1, and the bottom end of the powder box 17 is connected to a screw conveyor 18, and the outlet 19 of the screw conveyor 18 is arranged above the slurry barrel 5. The concentration of the slurry is conveniently adjusted by adding cement and other powders into the slurry barrel 5 through the screw conveyor 18.
[0038] In some embodiments, Figures 1-2As shown, the detection mechanism includes a conductivity meter 20 disposed on the support plate 6, and a probe 21 of the conductivity meter 20 penetrates below the support plate 6 and penetrates into the interior of the slurry tube 5. The conductivity meter 20 is used to monitor the concentration of the slurry, so that the staff can detect whether the concentration adjustment of the slurry meets the requirements.
[0039] In some embodiments, Figures 1-2 As shown, the support plate 6 is provided with an auxiliary feeding port 22, and an opening and closing plug 23 is detachably connected to the auxiliary feeding port 22. Another feeding path is added to improve the practicability of the device.
[0040] In other embodiments, different from the above embodiments, Figures 1-2 As shown, a material conveyor is provided between the feed pipeline 3 and the grouting pump 2 .
[0041] In other embodiments, different from the above embodiments, Figures 1-2 As shown, the top of the powder box 17 is detachably connected with a box cover, and the water tank 13 is provided with an opening and closing plug 23 to facilitate the addition of powder and water.
[0042] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.
Claims
1. A foundation pit grouting device, comprising a placing frame (1), a grouting pump (2) being arranged on the placing frame (1), a feed pipeline (3) and a grouting pipeline (4) being connected to the grouting pump (2), characterized in that: The placement rack (1) is provided with a slurry barrel (5), and a stirring mechanism for stirring the slurry is provided inside the slurry barrel (5); the bottom of the slurry barrel (5) is connected to the feed pipeline (3); the placement rack (1) is provided with a liquid adding mechanism for adding liquid and connected to the slurry barrel (5); the placement rack (1) is also provided with a powder adding mechanism for adding cement and connected to the slurry barrel (5); and a detection mechanism for detecting the slurry concentration is provided above the slurry barrel (5).
2. A foundation pit grouting device according to claim 1, characterized in that: A support plate (6) is provided on the top of the slurry barrel (5), and the support plate (6) is fixedly connected to the placement frame (1) through a vertical rod (7); the stirring mechanism includes a motor (8) arranged on the support plate (6), the output end of the motor (8) passes through the bottom of the support plate (6) and is connected to a rotating shaft (9), the rotating shaft (9) extends into the interior of the slurry barrel (5), and a plurality of stirring shafts (10) are vertically arranged on the outer side of the rotating shaft (9).
3. A foundation pit grouting device according to claim 2, characterized in that: The stirring shafts (10) are arranged in a staggered manner along the rotating shaft (9) in the vertical direction.
4. A foundation pit grouting device according to claim 2, characterized in that: The bottom of the slurry barrel (5) is arranged in a funnel shape, and the bottom end of the stirring shaft (10) is provided with a groove rake (11) that matches the inner side of the bottom of the slurry barrel (5); a plurality of guide scrapers (12) are arranged in parallel at equal distances at the bottom of the groove rake (11), and each of the guide scrapers (12) is arranged obliquely with respect to the groove rake (11).
5. A foundation pit grouting device according to claim 4, characterized in that: The angle between the side surface of the guide scraper (12) and the length direction of the bottom edge of the groove rake (11) is in the range of 15° to 45°.
6. A foundation pit grouting device according to claim 1, characterized in that: The liquid adding mechanism comprises a water tank (13) arranged on the placement rack (1); a water pump (14) is arranged on the top of the water tank (13); the water pump (14) is connected to a water inlet pipe (15); the bottom end of the water inlet pipe (15) extends into the bottom end of the water tank (13); the water outlet (16) of the water pump (14) is connected to the inside of the slurry barrel (5) and is arranged at a position close to the top end of the slurry barrel (5).
7. A foundation pit grouting device according to claim 1, characterized in that: The powder adding mechanism comprises a powder box (17) arranged on the placement rack (1), the bottom end of the powder box (17) is connected to a screw conveyor (18), and the discharge port (19) of the screw conveyor (18) is arranged above the slurry barrel (5).
8. A foundation pit grouting device according to claim 2, characterized in that: The detection mechanism comprises a conductivity meter (20) arranged on the support plate (6), and a probe (21) of the conductivity meter (20) penetrates below the support plate (6) and penetrates into the interior of the slurry cylinder (5).
9. A foundation pit grouting device according to claim 2, characterized in that: The support plate (6) is provided with an auxiliary feeding port (22), and an opening and closing plug (23) is detachably connected to the auxiliary feeding port (22).