Sand injection equipment for grouting
By designing a dredging component for the sand injection equipment and utilizing the combination of dredging pipes and springs, the problem of clogging in deep cracks was solved, enabling smooth flow of filling materials and improving construction efficiency.
Patent Information
- Application Number
- CN202520131866.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-20
AI Technical Summary
When grouting equipment is used to fill deep cracks, the filling material is easily obstructed, leading to accumulation and blockage, which affects the continuity and efficiency of construction.
A sand injection device for grouting was designed, comprising a sand injection cylinder and a dredging component. The dredging component consists of a dredging pipe and a spring. The blockage is cleared by the up-and-down movement of the dredging pipe, and the blockage is cleared by the elastic potential energy of the spring to restore the original shape.
Effectively clearing blockages ensures the normal output of filling materials, improving the continuity and efficiency of construction.
Smart Images
Figure CN223723566U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of road maintenance, and particularly relates to a sand injection equipment for grouting. BACKGROUND
[0002] With the continuous expansion of road construction scale, a large number of traffic infrastructures such as expressways and urban roads are put into use, and after long-term influence of factors such as vehicle load and climate change, road disease problems gradually increase, and road cracks are one of the most common diseases. In the treatment of road crack diseases, deep cracks are encountered, and the internal situation is complex. In order to effectively fill the deep cracks and ensure the stability and durability of the road structure after repair, a sand injection equipment for grouting is usually used to repair and treat the deep cracks.
[0003] The grouting port of the sand injection equipment for grouting is a key channel for filling materials to be injected into the crack. In order to accurately control the injection amount and injection direction of the filling materials and adapt to the repair requirements of cracks with different widths and depths, the diameter of the grouting port is generally small. When facing deep cracks, various impurities, loose particles and uneven surfaces may exist in the cracks. During the working process of the sand injection equipment for grouting, the filling materials are prone to be hindered and form accumulation and blockage when passing through the small grouting port. For example, large particles mixed in the sand of the filling materials, lumps formed due to moisture or reaction with other substances, and debris falling off in the cracks may all accumulate at the grouting port. With the passage of time, the grouting port is gradually blocked, the sand and stone materials of the filling materials cannot smoothly enter the filling area, the continuity and grouting effect of the grouting and sand injection work are seriously affected, the construction progress is delayed, and the construction efficiency is reduced.
[0004] In view of the defects in the above-mentioned related technologies, the inventors believe that when facing deep cracks, various impurities, loose particles and uneven surfaces may exist in the cracks. During the working process of the sand injection equipment for grouting, the sand and stone of the filling materials are prone to be hindered and form accumulation and blockage when passing through the small grouting port, the sand and stone materials of the filling materials cannot smoothly enter the filling area, the continuity and grouting effect of the grouting and sand injection work are seriously affected, and the construction efficiency is reduced. CONTENT OF THE UTILITY MODEL
[0005] In order to improve the problem that when facing deep cracks, various impurities, loose particles and uneven surfaces may exist in the cracks. During the working process of the sand injection equipment for grouting, the sand and stone of the filling materials are prone to be hindered and form accumulation and blockage when passing through the small grouting port, the sand and stone materials of the filling materials cannot smoothly enter the filling area, the continuity and grouting effect of the grouting and sand injection work are seriously affected, and the construction efficiency is reduced, the present application provides a sand injection equipment for grouting.
[0006] The application provides a sand injection device for grouting.
[0007] The sand injection device for grouting comprises a sand injection cylinder and a dredging assembly, the sand injection cylinder comprises an outer sleeve and an inner sleeve, the inner sleeve is coaxially sleeved outside the outer sleeve, a space between the inner wall of the outer sleeve and the outer wall of the inner sleeve forms a storage cavity for storing filling materials, a feeding port is formed on one side of the outer sleeve, and a grout outlet is arranged at the bottom of the outer sleeve.
[0008] The dredging assembly comprises a dredging pipe and a spring, the dredging pipe passes through and extends into the outer sleeve from the inner sleeve, the dredging pipe is sleeved with the spring and a pressing plate, one end of the spring is fixedly installed at the bottom in the inner sleeve, and the other end is connected with the pressing plate.
[0009] Through the above technical scheme, the feeding port is arranged as an inlet for the filling materials to enter the storage cavity, so that the operator can better control the addition amount of the filling materials, the grout outlet is an outlet for the filling materials to flow out of the storage cavity, the bottom end of the dredging pipe extends into the outer sleeve where the blockage may occur to dredge the grout outlet, when the grouting port is blocked, a force is applied to the dredging pipe, the pressing plate on the dredging pipe acts on the spring, the spring is compressed, the dredging pipe is lowered, and can be lowered to the grout outlet and outside the grout outlet, thereby dredging the grout outlet, when the force applied to the dredging pipe disappears, the spring returns to the original state, drives the pressing plate and the dredging pipe to return to the original position, and after multiple actions, the grout outlet is dredged, so that the grout outlet ensures normal output.
[0010] Optionally, a handle is arranged on the dredging pipe.
[0011] Through the above technical scheme, the handle is arranged to facilitate the operator to apply an external force to the dredging pipe, thereby realizing the up-down movement of the dredging pipe and the dredging effect on the grouting port.
[0012] Optionally, a moving groove is formed on one side of the sand injection cylinder, and the handle moves in the moving groove.
[0013] Through the above technical scheme, the moving groove is arranged to enable the handle and the dredging pipe to move within a specified range, and the space inside the device is reasonably utilized.
[0014] Optionally, a limiting plate is installed at the middle of the inner sleeve, the dredging pipe passes through the limiting plate, and the limiting plate is located above the pressing plate.
[0015] Through the above technical scheme, the limiting plate is arranged to accurately limit the movement range of the dredging pipe and the pressing plate.
[0016] Optionally, a sand storage barrel is connected with the feeding port, a connecting pipe is arranged between the sand storage barrel and the feeding port, and a valve is arranged on the connecting pipe.
[0017] By adopting the technical scheme, the sand storage barrel is arranged to store the filling material for road crack disease treatment, the connecting pipe is arranged to provide a conveying channel for the communication between the sand storage barrel and the feeding inlet of the sand injection cylinder, and the valve is arranged to accurately control the flow of the filling material from the sand storage barrel into the feeding inlet.
[0018] Optionally, the sand injection cylinder is provided with a cover plate above the sand injection cylinder.
[0019] By adopting the technical scheme, the cover plate is arranged to effectively isolate the filling material in the sand injection cylinder from the external environment, thereby preventing the filling material from being polluted.
[0020] Optionally, the inner sleeve is provided with a mounting hole at the bottom, and the dredging pipe is arranged in the mounting hole.
[0021] By adopting the technical scheme, the mounting hole is arranged to guide the movement of the dredging pipe, so that the dredging pipe can stably move up and down along the axis of the mounting hole, and the dredging pipe will not deviate.
[0022] Optionally, the bottom of the outer sleeve is conically arranged.
[0023] By adopting the technical scheme, the conical arrangement can guide the filling material to converge towards the grouting opening, so that the filling material in the sand injection cylinder can more concentratedly flow towards the grouting opening under the action of gravity.
[0024] Optionally, the sand injection cylinder is provided with a push rod, one end of the push rod is provided with a piston, and the piston is arranged in the storage cavity.
[0025] By adopting the technical scheme, the piston moves in the storage cavity by pushing the push rod, and the filling material is pressed to flow out of the grouting opening at a required speed and flow rate.
[0026] Optionally, one end of the push rod is provided with the piston, and the other end of the push rod is provided with a handle rod, and the handle rod is arranged outside the sand injection cylinder.
[0027] By adopting the technical scheme, the handle rod is arranged to facilitate the operator to apply an external force to the push rod, so as to push the piston to move in the storage cavity.
[0028] In summary, the present application has at least one of the following beneficial technical effects:
[0029] 1. The filling material is stored in the storage cavity, the filling material is injected into the crack through the grout outlet, when it is needed to dredge the blockage near the grout outlet, the operator applies force to the dredging pipe, the pressing plate on the dredging pipe acts on the spring, the spring is compressed, the elastic potential energy is stored, the dredging pipe is lowered, and the grout outlet can be lowered to dredge the blockage of the grout outlet, the inner sleeve guides the dredging pipe to accurately reach the corresponding position, when the force applied to the dredging pipe disappears, the spring returns to the original state, the pressing plate and the dredging pipe are driven to return to the original position, the dredging pipe is moved up and down for multiple times, and the blockage of the grout outlet is acted on, so that the grout outlet and the grout outlet are dredged, and normal output of the grout outlet is facilitated.
[0030] 2. The handle on the dredging pipe can facilitate the operator to apply external force to the dredging pipe, when the blockage is handled, the operator holds the handle and presses downward, so that the dredging pipe bottom effectively extrudes and cleans the blockage, and the grout outlet is dredged through the multiple up-and-down movement of the dredging pipe. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 is the overall structure schematic diagram of the sand injection equipment for grouting of the embodiment of the application;
[0032] Figure 2 is the structure schematic diagram of the sand injection cylinder and the dredging assembly in the sand injection equipment for grouting of the embodiment of the application;
[0033] Figure 3 is the sectional view of the sand injection cylinder and the dredging assembly in the sand injection equipment for grouting of the embodiment of the application.
[0034] MARKED FOR EXPLANATION:
[0035] 1, sand injection cylinder; 11, outer sleeve; 111, feeding port; 112, grout outlet; 12, inner sleeve; 121, limiting plate; 13, storage cavity; 14, moving groove; 15, cover plate; 16, push rod; 17, piston; 18, handle rod; 2, dredging assembly; 21, dredging pipe; 211, handle; 22, spring; 23, pressing plate; 3, sand storage barrel; 4, connecting pipe. DETAILED DESCRIPTION
[0036] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.
[0037] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.
[0038] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.
[0039] The following will be described in detail in combination with the drawings Figures 1-3 The application is further described in detail.
[0040] The embodiment of the application discloses a sand injection equipment for grouting. Figure 1 、 Figure 2 and Figure 3 The sand injection equipment for grouting comprises a sand injection cylinder 1, the sand injection cylinder 1 comprises an outer sleeve 11 and an inner sleeve 12, the inner sleeve 12 is coaxially sleeved outside the outer sleeve 11, a space between the inner wall of the outer sleeve 11 and the outer wall of the inner sleeve 12 forms a storage cavity 13 for storing filling materials, a feeding port 111 is formed in one side of the outer sleeve 11, and a grout outlet 112 is arranged at the bottom of the outer sleeve 11.
[0041] The dredging assembly 2 comprises a dredging pipe 21 and a spring 22, the dredging pipe 21 penetrates through and extends out of the inner sleeve 12 into the outer sleeve 11, the dredging pipe 21 is sleeved with the spring 22 and a pressing plate 23, one end of the spring 22 is fixedly installed at the bottom in the inner sleeve 12, and the other end is connected with the pressing plate 23.
[0042] In the sand injection setting for grouting, the sand injection barrel 1 is formed by the combination of the outer sleeve 11 and the inner sleeve 12, the space between the inner wall of the outer sleeve 11 and the outer wall of the inner sleeve 12 forms the storage cavity 13, the sand of the filling material is placed in the storage cavity 13, and the feeding port 111 on one side of the outer sleeve 11 can be used as the entrance of the filling material into the storage cavity 13, so that the operator can better control the amount of filling material added, and according to the size, depth and specific repair requirements of the crack, the operator can accurately inject the appropriate amount of filling material into the storage cavity 13 through the feeding port 111.
[0043] The grout outlet 112 at the bottom of the outer sleeve 11 is used as the outlet for the filling material flowing out of the storage cavity 13, and is the key channel for transporting the filling material required for repairing the road cracks into the cracks. During the use of the device for crack repair, the filling material is stored in the storage cavity 13 and is extruded or flows by itself into the cracks through the grout outlet 112, and the position of the grout outlet 112 at the bottom of the outer sleeve 11 helps to accurately control the flow direction of the filling material. In road crack repair, the filling material can first fill the bottom of the crack, and then gradually fill the entire crack upwards as the filling material is continuously injected, which is very important for ensuring the compactness of crack filling, especially for some crack repair with depth requirements, which can effectively prevent the formation of voids at the bottom of the crack.
[0044] The unblocking assembly 2 is arranged in the middle cavity part of the inner sleeve 12, which can timely unblock when the device grout outlet 112 is blocked, which is convenient and fast, and the unblocking pipe 21 is used as the main component for unblocking. The unblocking pipe 21 extends from the inner cavity of the inner sleeve 12 to the outer sleeve 11 where the blockage may occur, and the inner sleeve 12 provides support and guidance for the unblocking pipe 21, ensuring that the unblocking pipe 21 can maintain a relatively accurate direction during movement. When it is necessary to unblock the blockage near the grout outlet 112, the inner sleeve 12 guides the unblocking pipe 21 to accurately reach the corresponding position, so that the unblocking pipe 21 can effectively play its function. When the operator applies force to the unblocking pipe 21, the pressing plate 23 on the unblocking pipe 21 acts on the spring 22, the spring 22 is compressed, and the elastic potential energy is stored, and the unblocking pipe 21 is lowered, which can be lowered to the grout outlet 112 to unblock the blockage of the grout outlet 112. When the force applied to the unblocking pipe 21 disappears, the spring 22 will restore to its original state by using the stored elastic potential energy, driving the pressing plate 23 and the unblocking pipe 21 back to the original position, facilitating the normal output of the grout outlet 112.
[0045] The spring 22 is sleeved outside the dredging pipe 21, one end of the spring 22 is fixed at the bottom of the inner sleeve 12, the other end is connected and fixed to the pressing plate 23 on the dredging pipe 21, the spring 22 provides a stable support point for the dredging assembly 2, the pressing plate 23 serves as an effective force transmission, when the operator applies force to the dredging pipe 21, the pressing plate 23 on the dredging pipe 21 acts on the spring 22, the spring 22 is compressed, storing elastic potential energy, the dredging pipe 21 is lowered, and can be lowered to the pulp outlet 112, the clogging condition of the pulp outlet 112 is dredged, when the force applied to the dredging pipe 21 disappears, the spring 22 recovers to the original state by using the stored elastic potential energy, driving the pressing plate 23 and the dredging pipe 21 back to the original position, facilitating the normal output of the pulp outlet 112.
[0046] The sand injection device for grouting can be used for repairing and treating deep cracks, when the grouting port is blocked, the operator applies external force to the dredging pipe 21, the pressing plate 23 can transmit the external force, that is, the pressing plate 23 fixed on the dredging pipe 21 applies pressure to the spring 22, the spring 22 is compressed, and at the same time drives the dredging pipe 21 to move downward. The lower end of the dredging pipe 21 directly contacts the blockage, and the mechanical pressure can crush or push away the hard block of the filling material, large particle impurities and the like blocked near the grouting port, by the operator applying force to the dredging pipe 21 for several times, the blocking phenomenon is eliminated, the pulp outlet 112 is re-achieved unblocked, the flowability of the filling material is restored, the continuity of the grouting sand injection device work and the grouting effect on the road gap can be solved and ensured, and the construction progress is ensured to proceed normally and the construction efficiency is ensured.
[0047] The dredging pipe 21 is provided with a handle 211, the handle 211 can facilitate the operator to apply external force to the dredging pipe 21, and then realize the up-down movement of the dredging pipe 21 to dredge the grouting port. When the dredging pipe 21 needs to be used for dredging work, the operator can hold the handle 211 to apply downward pressure to the dredging pipe 21 more stably and accurately. Since a certain external force is needed for the dredging work to overcome the elastic force of the spring 22 and push the dredging pipe 21, the handle 211 can help the operator to exert force better. When dealing with stubborn blockage, the operator can tightly hold the handle 211 and press down, so that the dredging pipe 21 effectively extrudes and cleans the blockage.
[0048] With the help of the handle 211, the operator can better control the force of the unclogging pipe 21 down, different degrees of blockage may need different size of force to dredge, by holding the handle 211, the operator can adjust the force of the down according to the actual blockage, avoid excessive force damage equipment or force too small can not achieve dredging effect. At the same time, the handle 211 is also helpful to control the direction of the unclogging pipe 21, to ensure that it is accurately aligned with the blocked part, improve the efficiency of dredging. When using some with pressure grouting equipment, if the blockage occurs, the unclogging pipe 21 may accumulate a certain pressure, the handle 211 can let the operator operate outside the safe distance, the handle 211 plays a role in isolation protection, reduce the risk caused by pressure release and other conditions.
[0049] A moving groove 14 is opened on one side of the sand injection cylinder 1, and the handle 211 moves in the moving groove 14. The moving groove 14 can make the handle 211 and the unclogging pipe 21 move within a specified range, reasonably utilize the space inside the equipment, and make the layout of the equipment more reasonable.
[0050] The middle part of the inner sleeve 12 is provided with a limiting plate 121, the unclogging pipe 21 passes through the limiting plate 121, and the limiting plate 121 is located above the pressing plate 23. The limiting plate 121 can accurately limit the moving range of the unclogging pipe 21 and the pressing plate 23. When the spring 22 restores the elastic deformation and drives the unclogging pipe 21 to move upward, the limiting plate 121 can prevent the unclogging pipe 21 and the pressing plate 23 from rising excessively, so as to ensure that the unclogging pipe 21 is always in a reasonable working position range.
[0051] The sand storage barrel 3 is connected to the feed inlet 111, and a connecting pipe 4 is arranged between the sand storage barrel 3 and the feed inlet 111. A valve is arranged on the connecting pipe 4. The sand storage barrel 3 can store the filling material for road crack disease treatment, such as sand and stone, to ensure sufficient material supply during the filling process. The capacity of the sand storage barrel 3 is determined according to the specific engineering requirements. In large road crack repair projects, a large-capacity sand storage barrel 3 may be needed to reduce the frequency of sand addition and improve work efficiency. For small repair tasks, a smaller-capacity sand storage barrel 3 can meet the demand.
[0052] The connecting pipe 4 is arranged in communication with the feeding port 111 of the sand filling barrel 1 and the sand storage barrel 3, and the length and diameter of the connecting pipe 4 are selected according to the particle size and flowability of the filling material, so as to ensure the smooth conveying of the filling material and avoid the blockage of the connecting pipe 4. The valve can accurately control the flow of the filling material from the sand storage barrel 3 into the feeding port 111, and the appropriate amount of filling material can enter the feeding port 111 according to the actual filling demand, so as to avoid waste of the filling material, and the valve can also effectively prevent the backflow of the filling material. When the internal pressure of the equipment changes or other factors cause the pressure at the feeding port 111 to be higher than the pressure in the sand storage barrel 3, the valve can prevent the sand from flowing back from the feeding port 111 to the sand storage barrel 3.
[0053] In the present application, one end of the connecting pipe 4 is installed at the bottom of the sand storage barrel 3, and the other end is arranged at the feeding port 111 of the sand filling barrel 1. The connecting pipe 4 at the bottom of the sand storage barrel 3 can facilitate the smooth entry of the filling material in the sand storage barrel 3 and at the bottom of the sand storage barrel 3 into the connecting pipe 4. The length of the connecting pipe 4 can be selected according to the particle size of the filling material. A shorter connecting pipe 4 can be selected to communicate with the feeding port 111, and the position of the feeding port 111 can be at two-thirds of the sand filling barrel 1. The filling material at the feeding port 111 can flow to the slurry outlet 112 by its own gravity, and then be filled into the cracks.
[0054] The cover plate 15 is installed above the sand filling barrel 1. The cover plate 15 can effectively isolate the filling material (such as sand) in the sand filling barrel 1 from the external environment, and can also prevent large foreign matters from entering the sand filling barrel 1, causing damage to the sand filling barrel 1 and affecting the normal flow and filling of the filling material.
[0055] The bottom of the inner sleeve 12 is provided with a mounting hole, and the dredging pipe 21 is arranged in the mounting hole. The mounting hole facilitates the installation and movement of the dredging pipe 21. When the dredging assembly 2 is not in use, the lowest end of the dredging pipe 21 is located in the inner sleeve 12, and the dredging pipe 21 is located in the mounting hole. The dredging pipe 21 can assist in sealing to prevent the filling material from entering the inner sleeve 12 and corroding the spring 22. When dredging is needed, the dredging pipe 21 can stably move up and down on the axis of the mounting hole. The mounting hole serves as a guide to prevent the dredging pipe 21 from deviating, so that the operator can accurately operate the dredging pipe 21 at the position to be dredged, thereby improving the dredging efficiency.
[0056] The bottom of the outer sleeve 11 is conical, which can guide the filling material to converge to the grouting port, so that the filling material in the sand injection cylinder 1 flows more concentratedly to the grouting port 112 under the action of gravity. When performing road crack repair grouting, the filling material in the sand injection cylinder 1 slides along the conical slope and concentrates at the grouting port 112, which is more conducive to the smooth flow of the material out of the outer sleeve 11 and into the crack, thereby improving the filling efficiency.
[0057] The filling material in the sand injection cylinder 1 can flow into the road crack to be repaired through the grouting port 112, or the filling material can be delivered to the grouting port 112 through pressure. Specifically, a push rod 16 is arranged in the sand injection cylinder 1, one end of the push rod 16 is provided with a piston 17, the piston 17 is located in the storage cavity 13, and the piston 17 moves in the storage cavity 13 by pushing the push rod 16, so as to apply pressure to the filling material, so that the filling material can flow out of the grouting port 112 at a desired speed and flow rate. That is, the combination of the push rod 16 and the piston 17 in the sand injection cylinder 1 can control the process of the filling material flowing out of the storage cavity 13 through the grouting port 112, and when facing road cracks of different widths and depths, the advancing speed of the piston 17 can be controlled through the push rod 16 according to the specific filling requirements of the crack, and then the discharging amount of the filling material at the grouting port 112 can be controlled.
[0058] The push rod 16 is provided with a handle rod 18 at one end, and the handle rod 18 is located outside the sand injection cylinder 1. The handle rod 18 can facilitate the operator to apply external force to the push rod 16, so as to push the piston 17 to move in the storage cavity 13. Through the handle rod 18, the operator can more accurately control the movement direction of the push rod 16 and the piston 17.
[0059] The implementation principle of the grouting sand injection device in the embodiment is that the storage cavity 13 formed between the outer sleeve 11 and the inner sleeve 12 stores the filling material, the filling material in the sand storage barrel 3 enters the storage cavity 13 through the connecting pipe 4 and the feeding port 111, the valve on the connecting pipe 4 can control the input flow of the filling material, the cover plate 15 on the sand injection cylinder 1 can prevent foreign matters from polluting the filling material, the filling material in the storage cavity 13 can flow into the road crack through the grouting port 112, or the push rod 16 can be pushed by the handle rod 18, the push rod 16 drives the piston 17 to move in the storage cavity 13, the piston 17 applies pressure to the filling material, and the filling material flows to the grouting port 112 of the conical outer sleeve 11 at the bottom under the action of pressure, and under the guidance of the conical bottom, the filling material can flow more concentratedly to the grouting port 112 and then be smoothly injected into the road crack.
[0060] When the grouting port is blocked, the operator holds the handle 211, the handle 211 drives the dredging pipe 21 and the pressing plate 23 to move downward in the moving groove 14 against the elastic force of the spring 22, the lower end of the dredging pipe 21 contacts and extrudes the blockage, and the hard block is extruded and broken or pushed away by mechanical pressure. At the same time, the vibration and disturbance generated by the dredging pipe 21 during the up-down movement can loosen the tightly packed blocked particles, and help the loosened blocked particles to be carried away under the flow of the filling material, the filling material restores its fluidity, and the grouting port 112 is restored to unobstructed. By using the device to dredge the accumulation of the grouting port 112, the fluidity of the filling material is ensured, so that the filling material can smoothly enter the filling area of the road crack, the grouting effect of the grouting and sand filling work is ensured, the grouting port 112 is avoided to be taken out and handled, the grouting and filling operation is avoided to be re-performed, and the construction efficiency is improved.
[0061] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A sand injection device for grouting, characterized in that: include Sand injection cylinder (1), the sand injection cylinder (1) includes an outer sleeve (11) and an inner sleeve (12), the inner sleeve (12) is coaxially fitted with the outer sleeve (11), the space between the inner wall of the outer sleeve (11) and the outer wall of the inner sleeve (12) forms a storage cavity (13) for storing filling material, the outer sleeve (11) has a feed inlet (111) on one side, and the outer sleeve (11) has a slurry outlet (112) at the bottom. The unblocking assembly (2) includes an unblocking pipe (21) and a spring (22). The unblocking pipe (21) passes through and extends out of the inner sleeve (12) into the outer sleeve (11). The unblocking pipe (21) is fitted with the spring (22) and a pressure plate (23). One end of the spring (22) is fixedly installed at the bottom inside the inner sleeve (12), and the other end is connected to the pressure plate (23).
2. The grouting sand injection equipment according to claim 1, characterized in that: A handle (211) is provided on the unblocking pipe (21).
3. The grouting sand injection equipment according to claim 2, characterized in that: The sand injection cylinder (1) has a movable groove (14) on one side, and the handle (211) moves within the movable groove (14).
4. The grouting sand injection equipment according to claim 1, characterized in that: A limiting plate (121) is installed in the middle of the inner sleeve (12), the unblocking pipe (21) passes through the limiting plate (121), and the limiting plate (121) is located above the pressure plate (23).
5. The grouting sand injection equipment according to claim 1, characterized in that: The feed inlet (111) is connected to a sand storage tank (3), and a connecting pipe (4) is provided between the sand storage tank (3) and the feed inlet (111). A valve is installed on the connecting pipe (4).
6. The grouting sand injection equipment according to claim 1, characterized in that: A cover plate (15) is installed on the top of the sand injection cylinder (1).
7. The grouting sand injection equipment according to claim 1, characterized in that: The inner sleeve (12) has an installation hole at its bottom, and the unblocking pipe (21) passes through the installation hole.
8. The grouting sand injection equipment according to claim 1, characterized in that: The bottom of the outer sleeve (11) is tapered.
9. The grouting sand injection equipment according to claim 1, characterized in that: A push rod (16) is provided inside the sand injection cylinder (1), and a piston (17) is installed at one end of the push rod (16). The piston (17) is located inside the storage cavity (13).
10. The grouting sand injection equipment according to claim 9, characterized in that: The piston (17) is installed at one end of the push rod (16), and a handle rod (18) is provided at the other end. The handle rod (18) is located outside the sand injection cylinder (1).