Grouting device for underground water pollution risk management and control of refuse landfill

Abstract

The invention belongs to the technical field of water conservancy construction, and particularly relates to a refuse landfill groundwater pollution risk management and control grouting device which comprises a grouting pipe, a grouting head, a turning plate and an anti-disengaging rod. The grouting head is detachably installed at the end of the grouting pipe and located in the grouting pipe, the multiple turning plates are rotatably installed at the end, inserted into the grouting pipe, of the grouting head, the multiple turning plates are distributed in an array mode with the axial direction of the grouting head as the circle center, and the end faces of every two adjacent turning plates can make contact with each other. The anti-disengaging rod is located on the side, away from the turning plate, of the grouting head, the anti-disengaging rod is rotationally installed on the outer wall of the grouting head and located in a gap between the grouting head and the grouting pipe, and the end of the anti-disengaging rod is attached to the inner wall of the grouting pipe. The concrete pouring device has the advantages that the overturning plate can adjust the attaching degree of the anti-falling rod and the grouting pipe according to the impact force, a cavity can be formed between the overturning plate and the grouting pipe after the overturning plate is overturned, concrete can be collected, and the effect that the pouring head cannot fall off when the impact force does not exist is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy construction; specifically, the present invention relates to a grouting device for controlling the risk of groundwater pollution in a landfill. Background Art

[0002] When controlling the risk of groundwater pollution, it is necessary to dig ditches according to the location of the pollution source, the direction of groundwater flow, the depth and degree of groundwater pollution, and perform grouting work in the ditches. In this work, grouting pipes and grouting heads are required.

[0003] A grouting pipe is a pre-embedded grouting pipe system used for permanent sealing of construction joints, cold joints, pipe seepage joints, voids between diaphragm walls, etc. in concrete. When installing the grouting pipe, in order to prevent groundwater or other liquids from entering the pipe and prevent materials such as slurry or concrete from leaking out of the pipe, a sealing device needs to be installed at the bottom of the grouting pipe to ensure the quality and safety of the grouting project.

[0004] Application Publication No. CN117781075A discloses a grouting pipe end sealing device, which relates to the field of water conservancy construction. The present invention discloses a grouting pipe end sealing device, including a grouting pipe, a short pipe plug arranged in the grouting pipe, and a support member arranged outside the short pipe plug for fixing the short pipe plug inside the grouting pipe. It further includes: a control unit arranged inside the short pipe plug, an adjustment unit arranged inside the short pipe plug and below the control unit, a support unit arranged outside the short pipe plug for supporting the support member; a fixing member arranged on the support member and connected to the support unit. The present invention can effectively reduce the entry of groundwater or other liquids into the interior of the grouting pipe, prevent materials such as slurry or concrete from leaking out of the grouting pipe, ensure the quality and safety of the grouting project, and at the same time prevent the materials in the grouting pipe from being polluted or eroded by the outside, protecting the service life of the pipe.

[0005] In the above prior art, since the concrete passes through the blades and drives the fixed arc plate to flip, the greater the impact force, the closer the contact between the fixed arc plate and the grouting pipe. However, when the concrete enters the interior of the grouting head, it is impossible to judge the rotation direction of the blades, and the situation of the separation of the fixed arc plate from the grouting pipe will occur. At the same time, if the blades drive the fixed arc plate to always remain in contact with the inner wall of the grouting pipe, the blades are easily impacted by the concrete for a long time, resulting in deformation of the fixed arc plate or the collapse of the structure between the blades and the fixed arc plate, reducing the overall anti-disconnection effect of the device. Summary of the Invention

[0006] In view of the above, the present invention provides a grouting device for controlling the groundwater pollution risk in a landfill, thereby solving or at least alleviating the above problems existing in the prior art.

[0007] To achieve the foregoing object, the present invention provides a grouting device for controlling the groundwater pollution risk in a landfill, including a grouting pipe, a grouting head, a flap, and an anti - detachment rod; the grouting head is detachably installed at the end of the grouting pipe, the grouting head is located inside the grouting pipe, the flap is rotatably installed at one end of the grouting head inserted into the grouting pipe, there are a plurality of the flaps, and the plurality of flaps are arranged in an array with the axis of the grouting head as the center of the circle. The end faces of two adjacent flaps can contact each other. The anti - detachment rod is located on the side of the grouting head away from the flap, the anti - detachment rod is rotatably installed on the outer wall of the grouting head and is located in the gap between the grouting head and the grouting pipe, and the end of the anti - detachment rod is in contact with the inner wall of the grouting pipe.

[0008] In a grouting device for controlling the groundwater pollution risk in a landfill as described above, optionally, the flap is set to be fan - shaped. When the end faces of the plurality of flaps are in contact with each other, they can form a conical cover. A first rotating seat is rotatably installed at the center of the tail end of the flap cover, the first rotating seat is fixedly installed on the outer wall of the end of the grouting head, a fixed baffle is fixedly installed at the tail end of the flap, a movable baffle is slidably installed outside the fixed baffle, and the inner wall of one end of the movable baffle contacts the outer wall of the opposite end of the adjacent movable baffle.

[0009] In a grouting device for controlling the groundwater pollution risk in a landfill as described above, optionally, a connecting plate is fixedly installed on the side of the fixed baffle close to the flap. One end of the connecting plate away from the fixed baffle is fixedly installed at the tail of the flap. A first strip - shaped groove is opened on the connecting plate, a first sliding block is slidably installed in the first strip - shaped groove, a first connecting rod is fixedly installed at the bottom end of the center of the first sliding block, one end of the first connecting rod away from the first sliding block is fixedly installed with a connecting ring, the connecting ring is slidably installed outside the grouting head, the inner wall of the connecting ring is in contact with the outer wall of the grouting head, and a first spring is arranged between the connecting ring and the first rotating seat. The two ends of the first spring are respectively fixedly installed on the bottom surface of the first rotating seat and the top surface of the connecting ring.

[0010] In a grouting device for controlling the groundwater pollution risk in a landfill as described above, optionally, a fixed ring is fixedly installed on the outer wall of the grouting head, a plurality of second rotating seats are circularly arrayed in the circumferential direction of the fixed ring, there are a plurality of the second rotating seats, first sliding rods are fixedly installed on the outer walls of the plurality of second rotating seats, the axial direction of the first sliding rod is the same as the radial direction of the grouting head, and a rotating rod is rotatably installed on the second rotating seat.

[0011] In a grouting device for controlling the risk of landfill groundwater pollution as described above, optionally, one end of the rotating rod away from the second rotating seat is rotatably connected to the end of the anti-disengagement rod. A limiting rod is provided between the anti-disengagement rod and the rotating rod. The top of the limiting rod is fixedly installed with a rotating ring, and the rotating ring is rotatably installed at one end where the anti-disengagement rod and the rotating rod are rotatably connected to each other. One end of the anti-disengagement rod away from the rotating rod is rotatably installed with a second sliding rod. The second sliding rod is parallel to the first sliding rod. The second sliding rod and the second sliding rod face in opposite directions, and the second sliding rod and the second sliding rod are respectively on both sides of the limiting rod.

[0012] In a grouting device for controlling the risk of landfill groundwater pollution as described above, optionally, a sliding sleeve is slidably installed on the outside of the anti-disengagement rod. The sliding sleeve includes a first sliding sleeve, a second sliding sleeve and a third sliding sleeve. The first sliding sleeve and the second sliding sleeve are respectively fixedly installed on both sides of the third sliding sleeve. The first sliding sleeve is slidably installed on the first sliding rod. The second sliding sleeve is slidably installed on the second sliding rod. The third sliding sleeve is slidably installed on the anti-disengagement rod.

[0013] In a grouting device for controlling the risk of landfill groundwater pollution as described above, optionally, rotating shafts are fixedly installed on both sides of the rotating rod. The two rotating shafts are respectively rotatably connected to the end of the anti-disengagement rod and the end of the rotating rod, and extend axially outwards. The bottom surface of the fixed baffle can contact the outer wall of the rotating shaft.

[0014] In a grouting device for controlling the risk of landfill groundwater pollution as described above, optionally, a second strip-shaped groove is formed in the rotating rod. A second sliding block is slidably installed in the second strip-shaped groove. Second connecting rods are fixedly installed at the bottom ends on both sides of the second sliding block. A moving sleeve is slidably installed on the outside of the grouting head. The inner wall of the moving sleeve contacts the outer wall of the grouting head. One end of the second connecting rod away from the second sliding block is fixedly installed on the end surface of the moving sleeve.

[0015] In a grouting device for controlling the risk of landfill groundwater pollution as described above, optionally, an annular baffle is fixedly installed on the fixed ring. The annular baffle is fixedly installed on the outer surface of the fixed ring. A plugging groove is formed at the end of the moving sleeve. The plugging groove can be inserted into the plugging groove. A second spring is provided between the moving sleeve and the fixed ring. The two ends of the second spring are respectively fixedly installed on the top surface of the moving sleeve and the bottom surface of the fixed ring.

[0016] In a grouting device for controlling the risk of landfill groundwater pollution as described above, optionally, a top rod is fixedly installed on the bottom surface of the connecting ring. The top surface of the moving sleeve can contact the bottom surface of the top rod.

[0017] A grouting device for controlling the groundwater pollution risk in a landfill of the present invention uses a rotatable flap. After the flap rotates, a cavity can be formed between the flap and the grouting pipe. The flap can control the anti - detachment rod to rotate. The end of the anti - detachment rod contacts the inner wall of the grouting pipe, enabling the flap to adjust the degree of fit between the anti - detachment rod and the grouting pipe according to the magnitude of the impact force. Moreover, after the flap flips, a cavity can be formed between the flap and the grouting pipe to collect concrete. By using the collected concrete, the anti - detachment block can always maintain contact with the inner wall of the pouring pipe, achieving the effect that the pouring head will not fall off even when there is no impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Referring to the accompanying drawings, the disclosure of the present invention will become more apparent. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the figures: Figure 1 is a schematic installation structure diagram of the present invention; Figure 2 is a schematic structure diagram of the flap in the closed state of the present invention; Figure 3 is a schematic structure diagram of the flap in the open state of the present invention; Figure 4 is a schematic structure diagram of the present invention after hiding the flap; Figure 5 is a schematic connection structure diagram of the anti - detachment rod, the rotating rod and the sliding sleeve of the present invention; Figure 6 is a schematic connection structure diagram of the flap, the fixed baffle and the movable baffle of the present invention; Figure 7 is a schematic structure diagram of the moving sleeve of the present invention.

[0019] Reference numerals: 1, grouting pipe; 2, grouting head; 2 - 1, first rotating seat; 2 - 2, fixed ring; 3, flap; 3 - 1, fixed baffle; 3 - 2, movable baffle; 3 - 3, connecting plate; 3 - 4, first strip - shaped groove; 3 - 5, first sliding block; 3 - 6, first connecting rod; 3 - 7, connecting ring; 3 - 8, first spring; 3 - 9, ejector rod; 4, anti - detachment rod; 4 - 1, rotating rod; 4 - 2, limiting rod; 4 - 3, rotating ring; 4 - 4, rotating shaft; 4 - 5, second strip - shaped groove; 4 - 6, second sliding block; 4 - 7, second connecting rod; 5, second rotating seat; 5 - 1, first sliding rod; 5 - 2, second sliding rod; 5 - 3, sliding sleeve; 5 - 4, first sliding sleeve; 5 - 5, second sliding sleeve; 5 - 6, third sliding sleeve; 6, moving sleeve; 6 - 1, annular baffle; 6 - 2, insertion slot; 6 - 3, second spring. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figures 1 to 7 shown, a typical embodiment of the present invention provides a grouting device for controlling the groundwater pollution risk in a landfill, including a grouting pipe 1, a grouting head 2, a flap 3 and an anti - detachment rod 4; the grouting head 2 is detachably installed at the end of the grouting pipe 1, the grouting head 2 is located inside the grouting pipe 1, the flap 3 is rotatably installed at one end of the grouting head 2 inserted into the grouting pipe 1, there are multiple flaps 3, and the multiple flaps 3 are arranged in an array with the axis of the grouting head 2 as the center of the circle. The end faces of two adjacent flaps 3 can contact each other. The anti - detachment rod 4 is located on the side of the grouting head 2 away from the flap 3, the anti - detachment rod 4 is rotatably installed on the outer wall of the grouting head 2 and is located in the gap between the grouting head 2 and the grouting pipe 1, and the end of the anti - detachment rod 4 fits against the inner wall of the grouting pipe 1.

[0022] Specifically, a rubber block is fixedly installed at the top of the anti - detachment rod 4. The rubber block can fit against the inner wall of the grouting pipe 1, increasing the friction force between the anti - detachment rod 4 and the inner wall of the grouting pipe 1 and making the anti - detachment effect better. During use, the anti - detachment rod 4 is rotated so that the end of the anti - detachment rod 4 can approach the grouting head 2 for easy insertion of the grouting head 2 into the grouting pipe 1. Then, the grouting head 2 is inserted into the grouting pipe 1, and the anti - detachment rod 4 is released. At this time, the top of the anti - detachment rod 4 fits against the inner wall of the grouting pipe 1. During grouting, the flap 3 is impacted by the concrete, causing the flap 3 to drive the anti - detachment rod 4 to rotate. When the impact force is large, the anti - detachment rod 4 fits more tightly against the inside of the grouting pipe 1. When the impact force is small, the minimum anti - detachment force can be maintained, achieving the effect of preventing the grouting head 2 from falling off from the grouting pipe 1.

[0023] The flap 3 is set as a sector. When the end faces of the multiple flaps 3 are in contact with each other, they can form a conical cover. A first rotating seat 2 - 1 is rotatably installed at the center of the tail end of the flap. The first rotating seat 2 - 1 is fixedly installed on the outer wall of the end of the grouting head 2. A fixed baffle 3 - 1 is fixedly installed at the tail end of the flap 3, and a movable baffle 3 - 2 is slidably installed outside the fixed baffle 3 - 1. One end inner wall of the movable baffle 3 - 2 contacts the outer wall of the opposite end of its adjacent movable baffle 3 - 2.

[0024] When the flap 3 is in a state where the end faces are in contact with each other, the flap 3 can form a seal at the top end of the grouting head 2, preventing concrete from entering the grouting head 2. At this time, when injecting concrete, the concrete is blocked by the flap 3 and will move towards the fixed baffle 3-1. Then the concrete will be located in the cavity formed between the fixed baffle 3-1, the movable baffle 3-2 and the flap 3. At this time, when continuing to grout the concrete, the concrete drives the movable baffle 3-2 to slide on the fixed baffle 3-1 in a direction away from the flap 3. At this time, the cavity area formed between the fixed baffle 3-1, the movable baffle 3-2 and the flap 3 becomes larger and can accommodate more concrete, so that the impact force of the concrete drives the fixed baffle 3-1 to flip towards the grouting head 2, enabling the flap 3 to flip from the closed state to the open state, allowing the concrete to be stored in the cavity, and enabling the end of the movable baffle 3-2 to contact the inner wall of the grouting pipe 1, ensuring the stability of the concrete during collection. Since the adjacent movable baffles 3-2 are buckled with each other, the whole movable baffle 3-2 can move, facilitating the accommodation of concrete.

[0025] A connecting plate 3-3 is fixedly installed on the side of the fixed baffle 3-1 close to the flap 3. One end of the connecting plate 3-3 away from the fixed baffle 3-1 is fixedly installed at the tail of the flap 3. A first strip-shaped groove 3-4 is formed in the connecting plate 3-3. A first sliding block 3-5 is slidably installed in the first strip-shaped groove 3-4. A first connecting rod 3-6 is fixedly installed at the bottom end of the center of the first sliding block 3-5. One end of the first connecting rod 3-6 away from the first sliding block 3-5 is fixedly installed with a connecting ring 3-7. The connecting ring 3-7 is slidably installed outside the grouting head 2. The inner wall of the connecting ring 3-7 is in contact with the outer wall of the grouting head 2. A first spring 3-8 is provided between the connecting ring 3-7 and the first rotating seat 2-1. The two ends of the first spring 3-8 are respectively fixedly installed on the bottom surface of the first rotating seat 2-1 and the top surface of the connecting ring 3-7.

[0026] When the flap 3 flips, it can rotate on the first rotating seat 2-1 and drive the connecting plate 3-3 to rotate, causing the first sliding block 3-5 to be blocked by the first strip-shaped groove 3-4, driving the first connecting rod 3-6 to move downward, making the connecting ring 3-7 slide downward and stretch the first spring 3-8, facilitating the synchronous flipping of all the flaps 3. When the first spring 3-8 is not stressed, it is in a compressed state, enabling the flap 3 to maintain the closed state, which is convenient for the concrete to be collected first and then enter the grouting head 2 during grouting.

[0027] A fixing ring 2-2 is fixedly installed on the outer wall of the grouting head 2. A plurality of second rotating seats 5 are circularly arrayed in the circumferential direction of the fixing ring 2-2. There are multiple second rotating seats 5, and a first sliding rod 5-1 is fixedly installed on the outer walls of the multiple second rotating seats 5. The axial direction of the first sliding rod 5-1 is the same as the radial direction of the grouting head 2. A rotating rod 4-1 is rotatably installed on the second rotating seat 5.

[0028] One end of the rotating rod 4-1 away from the second rotating seat 5 is rotatably connected to the end of the anti-disengagement rod 4. A limiting rod 4-2 is arranged between the anti-disengagement rod 4 and the rotating rod 4-1. A rotating ring 4-3 is fixedly installed at the top of the limiting rod 4-2. The rotating ring 4-3 is rotatably installed at one end where the anti-disengagement rod 4 and the rotating rod 4-1 are rotatably connected to each other. One end of the anti-disengagement rod 4 away from the rotating rod 4-1 is rotatably installed with a second sliding rod 5-2. The second sliding rod 5-2 is parallel to the first sliding rod 5-1. The orientations of the second sliding rod 5-2 and the second sliding rod 5-2 are opposite, and the second sliding rod 5-2 and the second sliding rod 5-2 are respectively on both sides of the limiting rod 4-2.

[0029] When the limiting rod 4-2 moves downward, it can drive the ends of the rotating rod 4-1 and the anti-disengagement rod 4 to move downward. The rotating rod 4-1 and the anti-disengagement rod 4 are restricted by the first sliding rod 5-1 and the second sliding rod 5-2, so that the end of the anti-disengagement rod 4 moves in the radial direction of the grouting head 2, making the anti-disengagement rod 4 fit more closely with the grouting head 2, and when the impact force is too large, the anti-disengagement effect is better.

[0030] A sliding sleeve 5-3 is slidably installed on the outside of the anti-disengagement rod 4. The sliding sleeve 5-3 includes a first sliding sleeve 5-3, a second sliding sleeve 5-3 and a third sliding sleeve 5-3. The first sliding sleeve 5-3 and the second sliding sleeve 5-3 are respectively fixedly installed on both sides of the third sliding sleeve 5-3. The first sliding sleeve 5-3 is slidably installed on the first sliding rod 5-1. The second sliding sleeve 5-3 is slidably installed on the second sliding rod 5-2. The third sliding sleeve 5-3 is slidably installed on the anti-disengagement rod 4.

[0031] When the limiting rod 4-2 moves, the first sliding sleeve 5-3 can drive the sliding on the first sliding rod 5-1, so that the second sliding sleeve 5-3 and the third sliding sleeve 5-3 slide in the direction of the first sliding rod 5-1, restricting the rotation angle of the second sliding rod 5-2, making the second sliding rod 5-2 and the first sliding rod 5-1 keep a parallel state, facilitating the anti-disengagement rod 4 to move in the radial direction of the grouting head 2, so that the end of the anti-disengagement rod 4 can fit with the inner wall of the grouting pipe 1.

[0032] Shafts 4-4 are fixedly installed on both sides of the rotating rod 4-1. The two shafts 4-4 are respectively rotatably connected to the end of the anti-disengagement rod 4 and the end of the rotating rod 4-1, and extend axially outwards. The bottom surface of the fixed baffle 3-1 can contact the outer wall of the shaft 4-4.

[0033] When the fixed baffle 3-1 flips, it can contact the rotating shaft 4-4. When the impact force of the concrete is too large, the fixed baffle 3-1 can continue to rotate, causing the fixed baffle 3-1 to press the rotating shaft 4-4 and drive the limiting rod 4-2 to press downward, making the anti-disengagement rod 4 fit more closely to the inner wall of the grouting head 2; After the concrete grouting is completed, the residual concrete in the cavity can prevent the flap 3 from resetting, allowing the fixed baffle 3-1 to remain in contact with the rotating shaft 4-4, enabling the anti-disengagement rod 4 to remain in contact with the grouting head 2. Before the next wave of concrete arrives, the grouting head 2 cannot fall off from the grouting pipe 1.

[0034] A second strip-shaped groove 4-5 is formed in the rotating rod 4-1. A second sliding block 4-6 is slidably installed inside the second strip-shaped groove 4-5. Second connecting rods 4-7 are fixedly installed at the bottom ends on both sides of the second sliding block 4-6. A moving sleeve 6 is slidably installed outside the grouting head 2. The inner wall of the moving sleeve 6 contacts the outer wall of the grouting head 2. The end of the second connecting rod 4-7 away from the second sliding block 4-6 is fixedly installed on the end face of the moving sleeve 6.

[0035] When installing or disassembling the grouting head 2, push the moving sleeve 6, causing the moving sleeve 6 to drive the second connecting rod 4-7 to move upward and drive the second sliding block 4-6 to slide in the second strip-shaped groove 4-5, causing the rotating rod 4-1 to rotate upward and driving the anti-disengagement rod 4 away from the inside of the grouting pipe 1, facilitating the installation and disassembly of the grouting head 2.

[0036] An annular baffle 6-1 is fixedly installed on the upper part of the fixed ring 2-2. The annular baffle 6-1 is fixedly installed on the outer surface of the fixed ring 2-2. A plugging groove 6-2 is formed at the end of the moving sleeve 6. The plugging groove 6-2 can be inserted into the plugging groove 6-2. A second spring 6-3 is provided between the moving sleeve 6 and the fixed ring 2-2. The two ends of the second spring 6-3 are respectively fixedly installed on the top surface of the moving sleeve 6 and the bottom surface of the fixed ring 2-2.

[0037] When the moving sleeve 6 is not stressed, the second spring 6-3 is in an extended state, causing the second spring 6-3 to drive the moving sleeve 6 to move on the grouting head 2 and causing the second sliding block 4-6 to slide downward in the second strip-shaped groove 4-5, driving the rotating rod 4-1 to rotate, facilitating the contact between the end of the anti-disengagement rod 4 and the inner wall of the grouting pipe 1; When the impact force of the concrete is too large, the fixed baffle 3-1 can continue to rotate, causing the fixed baffle 3-1 to press the rotating shaft 4-4 and drive the limiting rod 4-2 to press downward and compress the second spring 6-3, making the anti-disengagement rod 4 fit more closely to the inner wall of the grouting head 2; When the impact force is small, the second spring 6-3 stretches, keeping the rotating shaft 4-4 in contact with the fixed baffle 3-1. When the impact force of the concrete is too small, the anti-disengagement rod 4 maintains the minimum anti-disengagement force, which can protect the anti-disengagement rod 4 and prevent the anti-disengagement rod 4 from always being in the maximum anti-disengagement effect, resulting in deformation of the anti-disengagement rod 4 or damage to the connection structure on the anti-disengagement rod 4, leading to a reduction in the anti-disengagement effect.

[0038] The bottom surface of the connecting ring 3-7 is fixedly installed with a top rod 3-9, and the top surface of the moving sleeve 6 can be in contact with the bottom surface of the top rod 3-9.

[0039] When removing the grouting head 2, push the moving sleeve 6 so that the insertion slot 6-2 can sleeve the annular baffle 6-1 and the moving sleeve 6 can move upward. When the moving sleeve 6 contacts the top rod 3-9, it drives the top rod 3-9 to move upward, causing the connecting ring 3-7 to drive the first sliding block 3-5 to move upward, enabling the flap 3 to flip and close. When the flap 3 flips to the closed position, it can drive the fixed baffle 3-1 to flip, and the movable baffle 3-2 is driven by the fixed baffle 3-1 to rotate. The movable baffle 3-2 is blocked by the adjacent movable baffle 3-2, enabling the movable baffle 3-2 to converge in the radial direction of the grouting head 2, so that the concrete in the cavity can be collected. When pulling out the grouting head 2, the concrete in the cavity will not directly flow out from the gap between the grouting pipe 1 and the grouting head 2, facilitating the centralized collection of the concrete.

[0040] The technical scope of the present invention is not limited to the content in the above specification. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the scope of the present invention.

Claims

1. A grouting device for controlling the groundwater pollution risk of a landfill, characterized in that, It includes a grouting pipe (1), a grouting head (2), a flap (3) and an anti - detachment rod (4); the grouting head (2) is detachably installed at the end of the grouting pipe (1), the grouting head (2) is located inside the grouting pipe (1), the flap (3) is rotatably installed at one end of the grouting head (2) inserted into the grouting pipe (1), there are multiple flaps (3), and the multiple flaps (3) are arranged in an array with the axis of the grouting head (2) as the center of the circle. The end faces of two adjacent flaps (3) can contact each other. The anti - detachment rod (4) is located on the side of the grouting head (2) away from the flap (3), the anti - detachment rod (4) is rotatably installed on the outer wall of the grouting head (2) and is located in the gap between the grouting head (2) and the grouting pipe (1), and the end of the anti - detachment rod (4) fits against the inner wall of the grouting pipe (1).

2. The grouting device for controlling the groundwater pollution risk in a landfill as described in claim 1, characterized in that, The flap (3) is set as a sector. When the end faces of the multiple flaps (3) are in contact with each other, they can form a conical cover. A first rotating seat (2 - 1) is rotatably installed at the center of the tail end of the flap. The first rotating seat (2 - 1) is fixedly installed on the outer wall of the end of the grouting head (2). A fixed baffle (3 - 1) is fixedly installed at the tail end of the flap (3). An adjustable baffle (3 - 2) is slidably installed outside the fixed baffle (3 - 1). One end inner wall of the adjustable baffle (3 - 2) contacts the outer wall of the opposite end of its adjacent adjustable baffle (3 - 2).

3. The grouting device for controlling the groundwater pollution risk of a landfill as described in claim 2, characterized in that, A connecting plate (3 - 3) is fixedly installed on the side of the fixed baffle (3 - 1) close to the flap (3). One end of the connecting plate (3 - 3) away from the fixed baffle (3 - 1) is fixedly installed at the tail of the flap (3). A first strip - shaped groove (3 - 4) is formed in the connecting plate (3 - 3). A first sliding block (3 - 5) is slidably installed in the first strip - shaped groove (3 - 4). A first connecting rod (3 - 6) is fixedly installed at the bottom center of the first sliding block (3 - 5). One end of the first connecting rod (3 - 6) away from the first sliding block (3 - 5) is fixedly installed with a connecting ring (3 - 7). The connecting ring (3 - 7) is slidably installed outside the grouting head (2). The inner wall of the connecting ring (3 - 7) contacts the outer wall of the grouting head (2). A first spring (3 - 8) is arranged between the connecting ring (3 - 7) and the first rotating seat (2 - 1). The two ends of the first spring (3 - 8) are respectively fixedly installed on the bottom surface of the first rotating seat (2 - 1) and the top surface of the connecting ring (3 - 7).

4. The grouting device for controlling the groundwater pollution risk in a landfill site according to claim 3, wherein, A fixed ring (2 - 2) is fixedly installed on the outer wall of the grouting head (2). Multiple second rotating seats (5) are circularly and array - distributed in the circumferential direction of the fixed ring (2 - 2). There are multiple second rotating seats (5). First sliding rods (5 - 1) are fixedly installed on the outer walls of the multiple second rotating seats (5). The axis of the first sliding rod (5 - 1) is consistent with the radial direction of the grouting head (2). A rotating rod (4 - 1) is rotatably installed on the second rotating seat (5).

5. The grouting device for controlling the groundwater pollution risk of a landfill according to claim 4, wherein One end of the rotating rod (4-1) away from the second rotating seat (5) is rotatably connected to the end of the anti-disengagement rod (4). A limiting rod (4-2) is provided between the anti-disengagement rod (4) and the rotating rod (4-1). A rotating ring (4-3) is fixedly installed at the top end of the limiting rod (4-2). The rotating ring (4-3) is rotatably installed at one end where the anti-disengagement rod (4) and the rotating rod (4-1) are rotatably connected to each other. One end of the anti-disengagement rod (4) away from the rotating rod (4-1) is rotatably installed with a second sliding rod (5-2). The second sliding rod (5-2) is parallel to the first sliding rod (5-1). The second sliding rod (5-2) and the second sliding rod (5-2) face in opposite directions, and the second sliding rod (5-2) and the second sliding rod (5-2) are respectively on both sides of the limiting rod (4-2).

6. The grouting device for controlling the groundwater pollution risk in a landfill according to claim 5, wherein, A sliding sleeve (5-3) is slidably installed on the outside of the anti-disengagement rod (4). The sliding sleeve (5-3) includes a first sliding sleeve (5-3), a second sliding sleeve (5-3), and a third sliding sleeve (5-3). The first sliding sleeve (5-3) and the second sliding sleeve (5-3) are respectively fixedly installed on both sides of the third sliding sleeve (5-3). The first sliding sleeve (5-3) is slidably installed on the first sliding rod (5-1). The second sliding sleeve (5-3) is slidably installed on the second sliding rod (5-2). The third sliding sleeve (5-3) is slidably installed on the anti-disengagement rod (4).

7. The grouting device for controlling the groundwater pollution risk of a landfill according to claim 5, wherein, Shafts (4-4) are fixedly installed on both sides of the rotating rod (4-1). The two shafts (4-4) are respectively rotatably connected to the end of the anti-disengagement rod (4) and the end of the rotating rod (4-1), and extend axially outwards. The bottom surface of the fixed baffle (3-1) can contact the outer wall of the shaft (4-4).

8. The grouting device for controlling the groundwater pollution risk in a landfill according to claim 4, wherein, A second strip-shaped groove (4-5) is formed in the rotating rod (4-1). A second sliding block (4-6) is slidably installed inside the second strip-shaped groove (4-5). Second connecting rods (4-7) are fixedly installed at the bottom ends on both sides of the second sliding block (4-6). A moving sleeve (6) is slidably installed on the outside of the grouting head (2). The inner wall of the moving sleeve (6) contacts the outer wall of the grouting head (2). One end of the second connecting rod (4-7) away from the second sliding block (4-6) is fixedly installed on the end surface of the moving sleeve (6).

9. The grouting device for controlling the groundwater pollution risk in a landfill as described in claim 8, wherein An annular baffle (6-1) is fixedly installed on the fixed ring (2-2). The annular baffle (6-1) is fixedly installed on the outer surface of the fixed ring (2-2). A plugging groove (6-2) is formed at the end of the moving sleeve (6). The plugging groove (6-2) can be inserted into the plugging groove (6-2). A second spring (6-3) is provided between the moving sleeve (6) and the fixed ring (2-2). The two ends of the second spring (6-3) are respectively fixedly installed on the top surface of the moving sleeve (6) and the bottom surface of the fixed ring (2-2).

10. The grouting device for controlling the groundwater pollution risk in a landfill as described in claim 8, wherein, A top rod (3-9) is fixedly installed on the bottom surface of the connecting ring (3-7). The top surface of the moving sleeve (6) can contact the bottom surface of the top rod (3-9).

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