Freezing pipe grouting non-return device

Abstract

The utility model belongs to the field of engineering pipeline grouting, and discloses a freezing pipe grouting non-return device which comprises an outer pipe, a clearing assembly and a non-return assembly, the clearing assembly comprises an annular plate, a flexible layer, reset springs and a blocking piece, the reset springs are fixed to the upper end face of the blocking piece, the annular plate is fixed to the upper ends of the reset springs, and the non-return assembly is fixed to the outer pipe. A flexible layer is arranged on the inner side of the blocking piece in a surrounding mode. A telescopic rod is fixed to the upper end of the middle of the flexible layer, a support is fixed to the outer side of the telescopic rod, the support is fixed to the upper end of the sealing plate, and a non-return assembly is slidably arranged on the inner side of the inner pipe. By arranging the removing assembly, protection is formed between the inner wall of the inner pipe and the non-return assembly, the gap between the inner wall of the inner pipe and the non-return assembly is enlarged, hard particles entering the space between the inner pipe and the non-return assembly can be effectively reduced, more hard particles can remain between the inner pipe and the non-return assembly, and therefore the influence on resetting of the non-return assembly after the hard particles are hung on the wall is reduced.

Description

Technical Field

[0001] This disclosure pertains to the field of engineering pipeline grouting, specifically relating to a grouting check device for frozen pipes. Background Technology

[0002] The freezing pipe grouting technology refers to a technique used in vertical shafts constructed using the freezing method. Before the frozen wall thaws, grout is injected into the annular space outside the freezing pipe to isolate the vertical water-guiding channels between the upper and lower water-bearing strata, thereby ensuring the safety of mine construction.

[0003] When the viscosity of the cement slurry is high, the inner side of the cement slurry contains a large number of hard particles. These hard particles get stuck on the edge of the ball on the check valve, which greatly increases the friction between the ball and the inner tube, thus making it difficult for the spring to return to its original position. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this disclosure is to provide a grouting check device for freezing pipes, which solves the problem in existing technologies where, after the cement grout thickens, hard particles inside become stuck on the edge of the ball on the check device, resulting in a significant increase in the friction between the ball and the inner pipe, making it difficult for the spring to return to its original position.

[0005] The objective of this disclosure can be achieved through the following technical solutions:

[0006] The grouting check device for the frozen pipe includes: an outer pipe, a cleaning component, and a check component;

[0007] An inner tube is coaxially fixed to the inner side of the outer tube. A rectangular hole is opened through the side wall of the outer tube. A sealing plate is fixed to the upper end of the inner tube. A sealing hole is opened on the inner side of the sealing plate. There is a certain gap between the upper end face of the inner tube and the lower end face of the sealing plate. A cleaning component is provided between the sealing plate and the inner tube.

[0008] The clearing assembly includes an annular plate, a flexible layer, a reset spring, and a baffle plate. The baffle plate is slidably disposed on the inner wall of the inner tube, and multiple reset springs are fixed on the upper end face of the baffle plate. The annular plate is fixed on the upper end of the reset spring, and a flexible layer is arranged around the inner side of the baffle plate.

[0009] A telescopic rod is fixed to the upper middle part of the flexible layer, and a bracket is fixed to the outer side of the telescopic rod. The bracket is fixed to the upper end of the sealing plate, and a check valve assembly is slidably provided on the inner side of the inner tube.

[0010] In some disclosures, the diameter of the flexible layer is greater than the inner diameter of the baffle.

[0011] In some disclosures, the outer tube includes an upper support tube and a lower support tube, and the upper support tube is fixed to the outside of the sealing plate, the lower support tube is fixed to the lower end of the upper support tube, and the rectangular hole is located outside the lower support tube.

[0012] In some disclosures, a limiting seat is fixed to the upper end of the bracket, and an annular protrusion is fixed to the upper end face of the telescopic rod.

[0013] In some disclosures, the check valve assembly includes a support spring and a plug, with the plug slidably disposed on the inner side of the baffle, and the lower end of the plug being fixed to the support spring.

[0014] In some disclosures, the upper end face of the plug head is formed with a liquid storage tank.

[0015] In some disclosures, the height of the rectangular hole is lower than the upper end face of the inner tube.

[0016] In some disclosures, an arc-shaped frame is slidably disposed on the outer side of the rectangular hole, and a guide rail adapted to the arc-shaped frame is fixed to the side wall of the rectangular hole, and the moving path of the arc-shaped frame is the same as the path of the guide rail.

[0017] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0018] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0019] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0020] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0021] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0022] The beneficial effects of this disclosure are:

[0023] By setting up a cleaning component, a protective barrier is formed between the inner wall of the inner tube and the check assembly, and the gap between the two is increased. This can effectively reduce the entry of hard particles between the inner tube and the check assembly, and also allow more hard particles to remain between them, thereby reducing the impact of hard particles adhering to the wall on the reset of the check assembly. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this disclosure;

[0026] Figure 2 This is a schematic diagram of the internal structure of the outer casing according to an embodiment of the present disclosure;

[0027] Figure 3 This is an embodiment of the present disclosure. Figure 2 Overall structural diagram;

[0028] Figure 4 This is a schematic diagram of the connection structure between the clearing component and the anti-return component according to an embodiment of this disclosure;

[0029] Figure 5 This is an embodiment of the present disclosure. Figure 4 A schematic diagram of the overall structure.

[0030] In the diagram: 1. Outer tube; 101. Upper support tube; 102. Lower support tube; 103. Rectangular hole; 104. Guide rail; 2. Sealing plate; 21. Sealing hole; 3. Telescopic rod; 31. Bracket; 32. Annular protrusion; 311. Limiting seat; 4. Cleaning assembly; 41. Annular plate; 42. Flexible layer; 43. Reset spring; 44. Baffle; 5. Inner tube; 6. Check valve assembly; 61. Support spring; 62. Plug head; 621. Liquid storage tank; 7. Arc-shaped frame. Detailed Implementation

[0031] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0032] Based on the concept of this application, combined with Figures 1 to 5This document describes an embodiment of a grouting check device for frozen pipes. Specifically, the grouting check device is constructed as a split structure, comprising three components: an outer pipe 1, a cleaning component 4, and a check component 6. By providing the cleaning component 4, a protective barrier is formed between the inner wall of the inner pipe 5 and the check component 6, and the gap between them is increased. This effectively reduces the entry of hard particles between the inner pipe 5 and the check component 6, while also allowing more hard particles to remain between them, thereby reducing the impact of hard particles adhering to the wall on the repositioning of the check component 6.

[0033] Please refer to Figures 1 to 5 The grouting check device for the frozen pipe includes: an outer pipe 1, a cleaning component 4, and a check component 6;

[0034] An inner tube 5 is coaxially fixed to the inner side of the outer tube 1. A rectangular hole 103 is opened in the side wall of the outer tube 1 to penetrate the outer tube 1. A sealing plate 2 is fixed to the upper end of the inner tube 5. A sealing hole 21 is opened on the inner side of the sealing plate 2. There is a certain gap between the upper end face of the inner tube 5 and the lower end face of the sealing plate 2. A cleaning component 4 is provided between the sealing plate 2 and the inner tube 5.

[0035] The clearing component 4 includes an annular plate 41, a flexible layer 42, a reset spring 43, and a baffle 44. The inner wall of the inner tube 5 is slidably provided with a baffle 44, and multiple reset springs 43 are fixed on the upper end face of the baffle 44. The upper end of the reset spring 43 is fixed with an annular plate 41, and the inner side of the baffle 44 is surrounded by a flexible layer 42.

[0036] A telescopic rod 3 is fixed to the upper middle part of the flexible layer 42, and a bracket 31 is fixed to the outside of the telescopic rod 3. The bracket 31 is fixed to the upper end of the sealing plate 2. A check valve assembly 6 is slidably provided on the inner side of the inner tube 5.

[0037] During use, before injecting cement grout into the outer tube 1, when the return spring 43 is in its original length state, the upper end face of the baffle 44 is in contact with the lower end face of the sealing plate 2, and the check valve assembly 6 is blocked inside the sealing hole 21. This creates two relatively sealed spaces between the upper and lower sides of the sealing plate 2 inside the outer tube 1. When cement grout is injected into the outer tube 1 from the upper end, the cement grout first passes through the bracket 31, and then the cement grout is poured into the upper end face of the flexible layer 42 through the sealing hole 21. However, if the cement grout contains particles larger than the diameter of the sealing hole 21, they will be blocked by the bracket 31. On the outside of the support 31, particles are tilted and piled up around the support 31. Finer particles flow downwards along the gap between the support 31 and the larger particles. The support 31 can block large particles and help reduce blockage in the outer pipe 1. At the same time, small particles can continue to flow downwards, thereby reducing interference with the flow of fine particles and thus reducing the impact on the flow rate of cement grout. After the cement grout enters the sealing hole 21, it is stored at the upper end of the check component 6. With the injection of cement grout, the pressure on the check component 6 increases until it forces the check component 6 to move downwards. As the cement slurry compresses the flexible layer 42 and the baffle 44, they slide downwards simultaneously. The upper end of the flexible layer 42 is fixed to the telescopic rod 3, while the return spring 43 undergoes elastic deformation and extends downwards. The middle part of the flexible layer 42 is stretched by the telescopic rod 3, forming an upward bulge. The outer wall of the baffle 44 adheres to the inner wall of the inner tube 5 and slides downwards along the inner wall of the inner tube 5. At this time, the inner wall of the baffle 44 adheres to the check valve assembly 6 until the lower end face of the side wall of the baffle 44 adheres to the upper end face of the inner tube 5. Due to the downward flow of the cement slurry located at the upper end of the flexible layer 42, the flexible layer 42 is simultaneously compressed by the cement slurry. The soft layer 42 is then ... The rigid layer 42 is in a taut state, while the remaining lower part of the flexible layer 42 is in contact with the check component 6. Some cement grout accumulates on the flexible layer 42 inside the baffle 44, while excess cement grout overflows outward along the flexible layer 42 and enters the outer side of the inner tube 5, and then flows outward through the rectangular hole 103. Since the baffle 44 is in contact with the upper end of the inner tube 5 at this time, it can reduce the amount of cement grout entering the inner tube 5, thereby reducing the small particles stuck at the edge of the check component 6 and affecting the normal rebound of the check component 6, thus improving the practicality of the freezing pipe grouting check device of this device.

[0038] When grouting stops, the pressure at the upper end of the check component 6 decreases, the check component 6 moves upward, and at the same time the return spring 43 elastically returns to its original state, causing the baffle 44 to slide upward. During the sliding process, the particles around the opening of the inner tube 5 flow outward, thereby further cleaning the inner tube 5. After the baffle 44 is pulled out of the inner tube 5, the friction between the check component 6 and the inner tube 5 decreases, allowing the check component 6 to rebound quickly, thus facilitating repeated use.

[0039] Please refer to Figure 2 and Figure 3The diameter of the flexible layer 42 is greater than the inner diameter of the baffle 44. When the middle part of the flexible layer 42 is lifted upward by the telescopic rod 3, the lower end of the flexible layer 42 is still laid on the upper end of the check component 6 and will not be completely taut. If it is completely taut, the cement grout will flow out in large quantities from the periphery of the flexible layer 42, thereby reducing the pressure of the cement grout on the check component 6. This makes it easy for the check component 6 to close frequently at the sealing hole 21, thus affecting the grouting speed.

[0040] The outer tube 1 includes an upper support tube 101 and a lower support tube 102. The upper support tube 101 is fixed to the outside of the sealing plate 2, and the lower support tube 102 is fixed to the lower end of the upper support tube 101. The rectangular hole 103 is located outside the lower support tube 102.

[0041] Please refer to Figures 1 to 3 When in use, the lower support pipe 102 is fixed to the lower end of the upper support pipe 101 to assemble the entire outer pipe 1. Before assembly, the inner pipe 5 and the check valve assembly 6 are assembled inside the lower support pipe 102. When assembling the outer pipe 1, the inner pipe 5 and the check valve assembly 6 can be directly fixed inside the outer pipe 1 without subsequent adjustment, which facilitates the assembly of the check valve assembly 6. Furthermore, if the cement slurry in the lower support pipe 102 becomes blocked, it can be directly disassembled for maintenance, thereby further improving convenience.

[0042] The upper end of the bracket 31 is fixed with a limiting seat 311, and the upper end face of the telescopic rod 3 is fixed with an annular protrusion 32. In use, the telescopic rod 3 is inserted into the limiting seat 311 from top to bottom until the lower end face of the annular protrusion 32 at the upper end of the telescopic rod 3 is in contact with the upper end face of the limiting seat 311, thereby fixing the telescopic rod 3. In some embodiments, the bracket 31 and the telescopic rod 3 are fixed by welding, which improves the fixing strength between the two, but it is not easy for the welding head to enter the pipe for welding.

[0043] Please refer to Figure 3 and Figure 5 The check valve assembly 6 includes a support spring 61 and a plug head 62, and the plug head 62 is slidably disposed on the inner side of the baffle 44, with the support spring 61 fixed at the lower end of the plug head 62.

[0044] The upper end face of the plug head 62 is opened into the liquid storage tank 621.

[0045] In use, when the support spring 61 is in its original length state, the upper end face of the plug head 62 abuts against the lower end of the sealing hole 21, thereby plugging the sealing hole 21 and forming a relatively sealed state between the lower support tube 102 and the upper support tube 101. Because the edge of the plug head 62 slides against the baffle 44, the length difference between the outer diameter of the plug head 62 and the inner diameter of the inner tube 5 is equal to the thickness of the baffle 44, leaving a certain gap between the plug head 62 and the inner tube 5. This minimizes friction between the edge of the plug head 62 and the inner tube 5 even if some fine particles enter the inner side of the inner tube 5. The friction force facilitates the rebound of the support spring 61. Simultaneously, by creating a liquid storage groove 621 on the upper surface of the plug head 62, the capacity of the cement slurry at the upper end of the plug head 62 is increased when the plug head 62 moves downwards. This increases the force on the upper end of the plug head 62 during use, allowing some pressure to be stored at the upper end of the plug head 62 after some cement slurry overflows, increasing the flow rate of the cement slurry. Furthermore, the liquid storage groove 621 reduces the weight of the plug head 62 when not in use, thereby reducing the pressure on the support spring 61 and increasing its rebound speed.

[0046] Please refer to Figure 2 The height of the rectangular hole 103 is lower than the upper end face of the inner tube 5; this allows excess cement slurry to flow out through the rectangular hole 103 after grouting, through the principle of communicating vessels, thereby reducing the contact time between the cement slurry and the return spring 43, thus reducing the cement slurry solidification on the outside of the return spring 43, which is beneficial to improving the life of the return spring 43.

[0047] An arc-shaped frame 7 is slidably provided on the outer side of the rectangular hole 103, and a guide rail 104 adapted to the arc-shaped frame 7 is fixed on the side wall of the rectangular hole 103, and the moving path of the arc-shaped frame 7 is the same as that of the guide rail 104.

[0048] In use, when the outer tube 1 is inserted into the pre-drilled annular space, the arc-shaped frame 7 rubs against the inner wall of the annular space, causing the arc-shaped frame 7 to slide upward along the guide rail 104 until the upper end of the arc-shaped frame 7 abuts against the connection between the upper support tube 101 and the lower support tube 102. At this time, the arc-shaped frame 7 moves away from the rectangular hole 103. Cement grout is then injected into the outer tube 1. The inside and outside of the outer tube 1 are connected through the rectangular hole 103. When the outer tube 1 is placed into the annular space, the arc-shaped frame 7 can protect the rectangular hole 103, which helps to prevent particles on the inner wall of the annular space from blocking the rectangular hole 103 before grouting. At the same time, when the outer diameter of the outer tube 1 is the same as the inner diameter of the annular space, the gap between the outer wall of the outer tube 1 and the annular space can be increased, which facilitates the outflow of cement grout.

[0049] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of the grouting check device for the frozen pipe provided by this utility model.

[0050] In use, when cement grout is injected into the outer tube 1 from the top, the cement grout first passes through the support 31, and then is poured into the upper surface of the flexible layer 42 through the sealing hole 21. However, if the cement grout contains particles larger than the diameter of the sealing hole 21, they will be blocked by the support 31 on the outside of the support 31, while finer particles will flow downward along the gap between the support 31 and the larger particles. At the same time, small impurities can continue to flow downward. After the cement grout enters the sealing hole 21, it is stored at the upper end of the storage tank 621. As the cement grout is injected, the plug head 62 moves downward and compresses the support spring 61. At this time, the cement grout presses the flexible layer 42 and the baffle 44 to slide downward simultaneously, while the upper end of the flexible layer 42 and the telescopic rod... 3 is fixed, while the return spring 43 undergoes elastic deformation and extends downward. The middle part of the flexible layer 42 is stretched by the telescopic rod 3 to form an upward protrusion. The outer wall of the baffle 44 is attached to the inner wall of the inner tube 5 and slides downward along the inner wall of the inner tube 5 until the lower end face of the side wall of the baffle 44 is attached to the upper end face of the inner tube 5. As the cement slurry at the upper end of the flexible layer 42 flows downward, the flexible layer 42 around the lower end of the telescopic rod 3 is in a taut state. The remaining part of the lower end of the flexible layer 42 is attached to the check component 6. A portion of the cement slurry accumulates on the flexible layer 42 inside the baffle 44, while the excess cement slurry overflows outward along the flexible layer 42 and enters the outer side of the inner tube 5, and then flows outward through the rectangular hole 103.

[0051] When grouting stops, the pressure at the upper end of the check component 6 decreases, the check component 6 moves upward, and at the same time the return spring 43 elastically returns to its original state, causing the baffle 44 to slide upward. During the sliding process, the particles around the opening of the inner tube 5 flow outward, thereby further cleaning the inner tube 5. After the baffle 44 is pulled out of the inner tube 5, the friction between the check component 6 and the inner tube 5 decreases, allowing the check component 6 to rebound quickly, thus facilitating repeated use.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A grouting check device for freezing pipes, characterized in that, include: Outer tube (1), clearing assembly (4) and check valve assembly (6); An inner tube (5) is coaxially fixed to the inner side of the outer tube (1). A rectangular hole (103) penetrating the outer tube (1) is opened on the side wall of the outer tube (1). A sealing plate (2) is fixed to the upper end of the inner tube (5). A sealing hole (21) is opened on the inner side of the sealing plate (2). There is a certain gap between the upper end face of the inner tube (5) and the lower end face of the sealing plate (2). A cleaning component (4) is provided between the sealing plate (2) and the inner tube (5). The clearing component (4) includes an annular plate (41), a flexible layer (42), a reset spring (43), and a baffle (44). The inner wall of the inner tube (5) is slidably provided with a baffle (44), and a plurality of reset springs (43) are fixed on the upper end face of the baffle (44). The upper end of the reset spring (43) is fixed with an annular plate (41), and the inner side of the baffle (44) is surrounded by a flexible layer (42). A telescopic rod (3) is fixed at the upper middle part of the flexible layer (42), and a bracket (31) is fixed on the outer side of the telescopic rod (3). The bracket (31) is fixed at the upper end of the sealing plate (2), and a check valve assembly (6) is slidably provided on the inner side of the inner tube (5).

2. The grouting check device for freezing pipes according to claim 1, characterized in that, The diameter of the flexible layer (42) is greater than the inner diameter of the baffle (44).

3. The grouting check device for freezing pipes according to claim 1, characterized in that, The outer tube (1) includes an upper support tube (101) and a lower support tube (102), and the upper support tube (101) is fixed on the outside of the sealing plate (2). The lower support tube (102) is fixed at the lower end of the upper support tube (101), and the rectangular hole (103) is located on the outside of the lower support tube (102).

4. The grouting check device for freezing pipes according to claim 1, characterized in that, The upper end of the bracket (31) is fixed with a limiting seat (311), and the upper end face of the telescopic rod (3) is fixed with an annular protrusion (32).

5. The grouting check device for freezing pipes according to claim 1, characterized in that, The check valve assembly (6) includes a support spring (61) and a plug head (62), and the plug head (62) is slidably disposed on the inner side of the baffle (44), and the lower end of the plug head (62) is fixed with the support spring (61).

6. The grouting check device for freezing pipes according to claim 5, characterized in that, The upper end face of the plug (62) is opened into the liquid storage tank (621).

7. The grouting check device for freezing pipes according to claim 3, characterized in that, The height of the rectangular hole (103) is lower than the upper end face of the inner tube (5).

8. The grouting check device for freezing pipes according to claim 7, characterized in that, An arc-shaped frame (7) is slidably provided on the outer side of the rectangular hole (103), and a guide rail (104) adapted to the arc-shaped frame (7) is fixed on the side wall of the rectangular hole (103), and the moving path of the arc-shaped frame (7) is the same as the path of the guide rail (104).

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