Concrete backflow prevention check valve for pile foundation guide pipe

Abstract

The utility model relates to the field of constructional engineering, and discloses a pile foundation guide pipe concrete backflow prevention check valve which comprises a valve body, the left end and the right end of the valve body are fixedly connected with first flange plates facilitating device installation, and the left surface of the first flange plate close to the left is fixedly connected with a second flange plate. A guide pipe body used for conveying concrete is fixedly connected to the left surface of the second flange plate, an auxiliary mounting mechanism is arranged on the outer wall of the first flange plate, and a blocking assembly is arranged on the inner wall of the valve body. The blocking assembly comprises a mounting plate, the mounting plate is fixedly connected to the inner wall of the valve body, and the valve body provides support for the mounting plate. According to the auxiliary mounting mechanism, the mounting convenience is improved, the first flange plate and the second flange plate can be quickly aligned under the cooperation of the supporting ring, the clamping block, the compression spring and other components, workers do not need to lift the valve body with great effort, the labor intensity is reduced, meanwhile, the mounting efficiency is improved, and the time needed for mounting is shortened.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, and in particular to a check valve for preventing concrete backflow in a pile foundation guide tube. Background Technology

[0002] In construction engineering, pile foundation construction is a crucial step, and its quality directly affects the stability and safety of the entire building. The pile foundation guide pipe, as an important tool for conveying concrete, plays an irreplaceable role in delivering concrete to the bottom of the pile hole.

[0003] During the concrete pouring process, check valves are often used to prevent backflow of concrete, which could affect the quality of the pile foundation.

[0004] However, some problems still exist in the use of commonly used check valves. Among them, the valve disc is easily damaged by impact. During concrete pouring, the concrete rushes rapidly from the conduit to the check valve with a large impact force. Due to the high flow rate and large volume of concrete, the impact force acting directly on the valve disc is very strong. The internal structure design of traditional check valves often fails to adequately consider the buffering and protection against such high-speed impacts. The valve disc is subjected to such strong impacts for a long time, and it is very easy to deform, wear, or even break. Once the valve disc is damaged, the sealing performance of the check valve will decrease, and it will be unable to effectively prevent the backflow of concrete, thus affecting the pouring quality of the pile foundation.

[0005] To address this issue, a check valve for preventing concrete backflow in pile foundation guide pipes is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a concrete backflow prevention check valve for pile foundation guide pipes, which aims to solve the problems in the prior art where the valve disc is easily damaged by impact, affecting the sealing of the check valve and the quality of pile foundation pouring.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a concrete backflow prevention check valve for pile foundation guide pipes, comprising a valve body, wherein flange one is fixedly connected to both the left and right ends of the valve body for easy installation of the device, flange two is fixedly connected to the left surface of flange one on the left side, and a guide pipe body for conveying concrete is fixedly connected to the left surface of flange two, an auxiliary installation mechanism is provided on the outer wall of flange one, and a blocking component is provided on the inner wall of the valve body;

[0008] The blocking assembly includes a mounting plate, which is fixedly connected to the inner wall of the valve body. The valve body provides support for the mounting plate. A rotating shaft is rotatably connected to the inner wall of the mounting plate, and a baffle is fixedly connected to the outer wall of the rotating shaft.

[0009] As a further description of the above technical solution:

[0010] The auxiliary installation mechanism includes a fixing component and a positioning component. The fixing component includes a support ring, which is sleeved on the outer wall of flange one, and the inner wall of the support ring is in contact with the outer wall of flange one to maintain stability. A screw is threadedly connected to the inner wall of the support ring. A handwheel is fixedly connected to the upper surface of the screw, and an anti-slip pad that fits tightly against flange one is rotatably connected to the lower surface of the screw.

[0011] As a further description of the above technical solution:

[0012] The positioning assembly includes a pull rod, the rear surface of which is fixedly connected to the front surface of the locking block. One end of a compression spring is fixedly connected to the inner wall of the front side of the support ring, and the other end of the compression spring is fixedly connected to the locking block. A guide rod that contacts the flange is rotatably connected to the inner wall of the support ring.

[0013] As a further description of the above technical solution:

[0014] The handwheel passes through the upper surface of the support ring.

[0015] As a further description of the above technical solution:

[0016] The anti-slip pad penetrates the top of the inner wall of the support ring, and the locking block penetrates the front side of the inner wall of the support ring.

[0017] As a further description of the above technical solution:

[0018] The card block is designed as a "U" shape, and both the left and right ends of the rear surface of the card block are set as bevels.

[0019] As a further description of the above technical solution:

[0020] Both ends of the rear surface of the card block are set as bevels.

[0021] As a further description of the above technical solution:

[0022] The tie rod passes through and is slidably connected to the front surface of the support ring.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the baffle on the mounting plate can rotate during concrete impact, slowing down the concrete flow rate and preventing the valve disc from deforming and being damaged due to high-speed impact. This not only reduces the cost of repairing and replacing the check valve, but also ensures the normal delivery of concrete during pile foundation construction, ensuring that the quality of the pile foundation is not affected.

[0025] 2. In this utility model, the auxiliary installation mechanism improves the ease of installation. With the cooperation of components such as the support ring, the locking block and the compression spring, flange one and flange two can be quickly aligned, so that workers do not need to lift the valve body with effort, reducing labor intensity, improving installation efficiency and reducing the time required for installation. Attached Figure Description

[0026] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model;

[0027] Figure 2 This is a side view of the three-dimensional structure of the valve body and mounting plate in this utility model;

[0028] Figure 3 This is a three-dimensional structural disassembly diagram of the mounting plate and the archive in this utility model;

[0029] Figure 4 This is a three-dimensional cross-sectional diagram of flange one, flange two, and support ring in this utility model.

[0030] Legend:

[0031] 1. Valve body; 2. Flange 1; 3. Flange 2; 4. Pipe body; 51. Support ring; 52. Handwheel; 53. Screw; 54. Anti-slip pad; 61. Guide rod; 62. Pull rod; 63. Compression spring; 64. Locking block; 71. Mounting plate; 72. Rotary shaft; 73. Baffle. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 4This utility model provides an embodiment of a concrete backflow prevention check valve for pile foundation guide pipes, including a valve body 1. The valve body 1 is a check valve, which is existing technology and can be implemented by those skilled in the art. Since it is existing technology, it will not be described in detail in this case. The flow direction is marked on the valve body 1. In this device, the concrete flows from left to right. The pipe on the left side of the valve body 1 is the inlet pipe, and the pipe on the right side is the outlet pipe. Flanges 1-2 are fixedly connected to both ends of the valve body 1 for easy installation. Flanges 1-2 are connected to the pipes on the valve body 1. A flange 2-3 is fixedly connected to the left surface of the left flange 1-2. Both flanges 1-2 and flange 2-3 have threaded holes. The connection is made by bolts and is a detachable fixed connection. The left surface of flange 2 3 is fixedly connected to the conduit body 4 for conveying concrete. The conduit body 4 is a pile foundation conduit. The pile foundation conduit is existing technology and can be implemented by those skilled in the art. Since it is existing technology, it will not be described in detail in this case. During use, part of the pile foundation conduit is located underground and part is located above ground. The pile foundation conduit connected to valve body 1 is located above ground. The outer wall of flange 1 2 is provided with an auxiliary installation mechanism to facilitate the installation of flange 1 2 and flange 2 3 and to facilitate alignment. The inner wall of valve body 1 is provided with a blocking component. The blocking component can effectively buffer the impact of fluid and prevent the valve disc from being deformed by impact, which would affect subsequent normal use.

[0034] Reference Figure 1 - Figure 3 The blocking component includes a mounting plate 71, which is fixedly connected to the inner wall of the valve body 1. The valve body 1 provides support for the mounting plate 71. The mounting plate 71 is located inside the feed pipe, and its opening gradually narrows from left to right into a square shape. The narrowing surface is arc-shaped, so it will not block or leave concrete residue. A rotating shaft 72 is rotatably connected to the inner wall of the mounting plate 71, and a baffle 73 is fixedly connected to the outer wall of the rotating shaft 72. When the concrete flows, it will hit the baffle 73, and the baffle 73 will rotate. The obstruction generated by the baffle 73 can slow down the flow rate of the concrete and prevent the valve disc from being damaged by impact.

[0035] Reference Figure 1 , Figure 4The auxiliary installation mechanism includes a fixing component and a positioning component. The fixing component includes a support ring 51, which comes in various sizes to suit common flange sizes 1-2 and 2-3. The support ring 51 is fitted onto the outer wall of flange 1-2, and its inner wall is in close contact with the outer wall of flange 1-2 for stability. The support ring 51 has chamfered edges on both sides of its opening to facilitate its fitting onto flange 1-2 and flange 2-3. A screw 53 is threaded onto the inner wall of the support ring 51. The screw 53 is existing technology; when rotated, it moves longitudinally, and the thread helix angle of the thread groove on the outer wall of the screw 53 is less than five degrees. When rotation stops, the screw 53 cannot move up or down. A handwheel 52 is fixedly connected to the upper surface of the screw 53. The handwheel 52 is easy to grip. The lower surface of the screw 53 is rotatably connected to an anti-slip pad 54 that fits tightly against the lower surface of the flange 2. Rotating the handwheel 52 can drive the screw 53 to rotate. Under the influence of the screw 53, the handwheel 52, screw 53 and anti-slip pad 54 will move longitudinally synchronously. The positioning component includes a pull rod 62. The rear surface of the pull rod 62 is fixedly connected to the front surface of the locking block 64. One end of the compression spring 63 is fixedly connected to the inner wall of the front side of the support ring 51. The other end of the compression spring 63 is fixedly connected to the locking block 64. The inner wall of the support ring 51 is rotatably connected to a guide rod 61 that contacts the flange 2. There are multiple sets of guide rods 61 arranged in a circumferential array around the center of the support ring 51. However, the guide rods 61 are only distributed on the left half of the inner wall of the support ring 51. When the flange 2 is installed, it will not contact the guide rods 61.

[0036] Reference Figure 1 , Figure 4 Handwheel 52 penetrates the upper surface of support ring 51, anti-slip pad 54 penetrates the top of the inner wall of support ring 51 and moves longitudinally, and locking block 64 penetrates the front side of the inner wall of support ring 51. Locking block 64 is set as a "U" shape and moves in the front and back direction. The opening of locking block 64 faces backward. Both the left and right ends of the rear surface of locking block 64 are set as inclined surfaces. When the inclined surfaces are squeezed, locking block 64 will move forward and retract into support ring 51 to release the obstruction. Pull rod 62 penetrates and slides on the front surface of support ring 51. Pulling pull rod 62 can drive locking block 64 to move back and forth. When the installation is completed, flange 1 2 and flange 2 3 will be locked on the inner side of locking block 64.

[0037] Working principle: The support ring 51 is fitted onto the outer wall of flange 2. During the fitting process, the chamfer at the opening of the support ring 51 facilitates positioning.

[0038] During the connection process, the inclined surface on the right side of the locking block 64 will be squeezed, and the locking block 64 will drive the pull rod 62 to move forward. The locking block 64 will gradually retract into the support ring 51 to release the obstruction. The forward-moving locking block 64 will also squeeze the compression spring 63 to generate a reaction force. When the flange 2 is located inside the "U-shaped opening" of the locking block 64, the reaction force of the compression spring 63 will push the locking block 64 out and lock the flange 2.

[0039] Similarly, when installing flange 2 3 and conduit body 4, directly align flange 2 3 with the left opening of support ring 51 and insert it. The chamfer at the opening can provide guidance. When flange 2 3 moves to the "inside of the U-shaped opening" of the locking block 64, the reaction force of the compression spring 63 will push the locking block 64 out and lock flange 2 3. At this time, flange 1 2 and flange 2 3 will fit together. Then, turn the handwheel 52 to drive the screw 53 to rotate, which in turn drives the anti-slip pad 54 to move downward. Gradually, the lower surface of the anti-slip pad 54 will fit tightly with the upper surface of flange 1 2. At this time, support ring 51 can remain stable.

[0040] Then rotate flange 23 to align the threaded holes on flange 23 and flange 12. When rotating, guide rod 61 can roll, reducing the force required. When aligned, use bolts to fix flange 12 and flange 23, completing the installation between valve body 1, flange 12, flange 23, and guide tube body 4. When the installation is complete, support ring 51 does not need to be removed, which can enhance the stability between flange 12 and flange 23.

[0041] When the device is in use, concrete flows through the mounting plate 71 and impacts the baffle 73, causing the rotating shaft 72 and the baffle 73 to rotate. Under the blocking effect of the baffle 73, the flow rate of the concrete can be slowed down, preventing it from damaging the valve disc due to excessive impact, thus ensuring the service life of the check valve.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A check valve for preventing backflow of concrete in a pile foundation guide pipe, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to flange 1 (2) at both the left and right ends for easy installation of the device. Flange 2 (3) is fixedly connected to the left surface of flange 1 (2) on the left side. Conduit body (4) for conveying concrete is fixedly connected to the left surface of flange 2 (3). An auxiliary installation mechanism is provided on the outer wall of flange 1 (2). A blocking component is provided on the inner wall of the valve body (1). The blocking assembly includes a mounting plate (71) which is fixedly connected to the inner wall of the valve body (1). The valve body (1) provides support for the mounting plate (71). A rotating shaft (72) is rotatably connected to the inner wall of the mounting plate (71). A baffle (73) is fixedly connected to the outer wall of the rotating shaft (72).

2. The anti-backflow check valve for concrete in pile foundation guide pipes according to claim 1, characterized in that: The auxiliary installation mechanism includes a fixing component and a positioning component. The fixing component includes a support ring (51), which is sleeved on the outer wall of the flange (2). The inner wall of the support ring (51) is in contact with the outer wall of the flange (2) to maintain stability. The inner wall of the support ring (51) is threaded with a screw (53). A handwheel (52) is fixedly connected to the upper surface of the screw (53). An anti-slip pad (54) is rotatably connected to the lower surface of the screw (53) and its lower surface is in close contact with the flange (2).

3. The anti-backflow check valve for concrete in pile foundation guide pipes according to claim 2, characterized in that: The positioning assembly includes a pull rod (62), the rear surface of which is fixedly connected to the front surface of the locking block (64). One end of a compression spring (63) is fixedly connected to the inner wall of the front side of the support ring (51), and the other end of the compression spring (63) is fixedly connected to the locking block (64). A guide rod (61) that contacts the flange (3) is rotatably connected to the inner wall of the support ring (51).

4. The anti-backflow check valve for concrete in pile foundation guide pipes according to claim 2, characterized in that: The handwheel (52) penetrates the upper surface of the support ring (51).

5. The anti-backflow check valve for concrete in pile foundation guide pipes according to claim 3, characterized in that: The anti-slip pad (54) penetrates the top of the inner wall of the support ring (51), and the locking block (64) penetrates the front side of the inner wall of the support ring (51).

6. The anti-backflow check valve for concrete in pile foundation guide pipes according to claim 3, characterized in that: The card block (64) is set as a "U" shape, and the left and right ends of the rear surface of the card block (64) are both set as bevels.

7. The anti-backflow check valve for concrete in pile foundation guide pipes according to claim 3, characterized in that: Both ends of the rear surface of the card block (64) are set as bevels.

8. The anti-backflow check valve for concrete in pile foundation guide pipes according to claim 3, characterized in that: The pull rod (62) passes through and is slidably connected to the front surface of the support ring (51).

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