Concrete pump pipe leak-proof sealing device

Abstract

The utility model relates to a concrete pump pipe leakproof sealing cover device, including the sealing cover and operating mechanism, operating mechanism includes handle bar, elastic hook ring, articulated rod, limiting ring, and the two sides of sealing cover are equipped with the hook part and articulated seat A, articulated seat A is hinged with the articulated seat B of limiting ring side face through articulated rod, and the other side of limiting ring is equipped with articulated seat C, and articulated seat C is hinged with the rod end of handle bar, and the one end of the shank part of handle bar is hinged with one end of elastic hook ring, the periphery of concrete pump pipe is limited to the bottom surface of limiting ring, and the periphery is equipped with first hook and second hook, when sealing cover closed state, the ring part of elastic hook ring is connected with the hook part of sealing cover, and when handle bar is pushed to the right when going up, handle bar pulls tight elastic hook ring and hooks the hook part, and forms reverse self -locking, when handle bar applies external force and rotates to the right when going down, elastic hook ring and hook part are separated, and sealing cover opens. The above structure, sealing cover opening and closing operation is simple, and the effect of plugging is good, and it is more reliable to use.

Description

Technical Field

[0001] This utility model relates to the field of concrete pumping equipment and is a concrete pump pipe anti-leakage sealing device. Background Technology

[0002] In the current construction field, concrete pumping is a common construction method. Pumping concrete using concrete pumping devices not only reduces labor intensity but also offers greater flexibility and efficiency. The pump pipe inlets of such devices typically require a sealing device to prevent leakage and waste or site contamination when the pump pipe is moved. For example, Chinese patent publication CN218092080U, published on December 20, 2022, entitled "Anti-Leakage Device for Concrete Pouring Pump Pipe Movement," discloses a flip-top cover with a latch on one side. The latch engages with a flange on an iron pipe to open and close the cover. While the structure is relatively simple, in practical use, concrete easily contaminates the hinges and latches, making opening and closing the cover difficult or causing it to malfunction during solidification. Furthermore, as disclosed in Chinese patent document CN222687647U, authorized on March 28, 2025, the utility model entitled "A Controllable Concrete Pump Pipe Sealing Device" discloses a hook-and-loop connection formed by a hook and a locking slot on the side of the sealing plate. However, when hooking, the cover plate needs to be fully rotated into place, and even requires a certain over-rotation, to effectively engage with the hook. This operation is obviously inconvenient and laborious; moreover, due to the gap between the hook and the locking slot, the actual sealing reliability is not high. Therefore, improvements to the existing concrete pump pipe sealing structure are needed. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a concrete pump pipe anti-leakage sealing device, which solves the technical problems of existing similar concrete sealing structures being easily contaminated at the flip position or having excessively high precision design, resulting in inconvenience or difficulty in proper operation when opening and closing, and being time-consuming and labor-intensive. This objective is achieved through the following technical solution.

[0004] A concrete pump pipe anti-leakage sealing device includes a sealing cap that forms a closed seal when tightly fitted against the plane of the concrete pump pipe opening, and an operating mechanism for opening and closing the sealing cap relative to the concrete pump pipe opening. The key structural feature is that the operating mechanism includes a handle, an elastic hook ring, a hinge rod, and a limiting ring. On one side of the sealing cap, a hook portion is provided, and on the other side, a hinge seat A is provided. Hinge seat A is hinged to one end of the hinge rod, and the other end of the hinge rod is hinged to hinge seat B on the side of the limiting ring. On the other side of the limiting ring opposite to hinge seat B, a hinge seat C is provided, which is hinged to the end of the handle. The end of the handle near the handle is hinged to one end of the elastic hook ring. When the handle and the elastic hook ring rotate relative to each other, there is no interference between the handle of the handle and the hinge seat C of the limiting ring and the elastic hook ring. The circumferential surface of the concrete pump pipe has a surface that meets the bottom surface of the limiting ring. The system includes a limiting part for positioning, a first hook for suspending the elastic hook ring, and a second hook for suspending the cap hook. When the cap is closed relative to the concrete pump pipe opening, the ring of the elastic hook ring connects to the hook of the cap. When the handle is pushed upward, the handle pulls the elastic hook ring to hook the hook, and an acute angle is formed between the handle and the horizontal plane of the limiting ring to prevent the handle from rotating in the opposite direction. When the handle is rotated downward with external force, the elastic hook ring separates from the hook, and the cap is open relative to the concrete pump pipe opening. In this open state, when the elastic hook ring flips upward, it pulls the handle up, and the ring of the elastic hook ring connects to the first hook. When the cap rotates outward and upward, it connects to the second hook. The above structure utilizes the lever-locking principle when the handle is rotated to effectively control the tightening or loosening of the elastic hook ring and the cap hook, making operation extremely labor-saving and convenient. Furthermore, the elastic tension of the hook ring, combined with the hinge rod, ensures a reliable sealing connection between the cap and the concrete pump pipe inlet without requiring precise fitting. In addition, when the cap is opened, the handle, elastic hook ring, hinge rod, and cap all have an upward or outward tilting structure, maintaining a certain distance from the concrete pump pipe inlet, thus reducing the risk of direct concrete contamination and enhancing reliability.

[0005] The limiting ring consists of two semicircles, which are connected and relatively fixed by a pivot pin and / or independent bolts at hinge seat B and hinge seat C. This structure facilitates the assembly and connection of the limiting ring.

[0006] The hook portion of the cap forms a hook hole. When the cap is rotated until the hook portion engages with the second hook, the second hook passes through the hook hole to form a hook stop and fixation. This structure makes the cap hang more securely and stably.

[0007] When the cap closes the concrete pump pipe opening, an operating gap is left between the handle of the handle rod and the concrete pump pipe. This structure facilitates the use and operation of the handle rod.

[0008] The hinge rod is replaced with an elastic pull ring. This structure allows for a better self-adaptive sealing fit between the cap and the concrete pump pipe inlet.

[0009] When the cap is closed relative to the concrete pump pipe opening, the hinge rod is in an obliquely tightened state, with the upper end of the hinge rod tilting outwards. This structure ensures reliable sealing between the cap and the concrete pump pipe opening.

[0010] When the hook of the cover is suspended and connected to the second hook, both the hinge rod and the cover are located above the hinge seat B of the limiting ring. This structure keeps the hinge rod away from the concrete pump pipe inlet, thus preventing it from being contaminated by concrete.

[0011] This utility model has a relatively simple overall structure and is easy to operate. The cap maintains a constant tension with the concrete pump pipe inlet, resulting in excellent sealing performance. Especially when the cap is opened, it effectively prevents moving parts or components associated with the cap's rotation from coming into contact with the concrete pump pipe inlet, minimizing or eliminating contact and reducing the risk of contamination. This makes it reliable and extends its service life. It is suitable for use as a sealing structure for concrete pump pipe inlets, or as an improvement on similar products. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 yes Figure 1 A schematic diagram of the front structure on the side where the handle is located.

[0014] Figure 3 This is a schematic diagram of the closed structure of this utility model.

[0015] Figure 4 yes Figure 3 Schematic diagram of the center handle lever in the open position.

[0016] Figure 5 yes Figure 4 A schematic diagram of the structure where the handle separates from the cover after being opened.

[0017] Figure 6 yes Figure 5 A schematic diagram of the structure when the cap is fully opened and the material is being poured.

[0018] Figure 7 yes Figure 6 A schematic diagram of the improved structure.

[0019] The numbers and names in the diagram are as follows: 1. Concrete pump pipe, 101. First hook, 102. Second hook, 103. Limiting part, 2. Cover, 201. Hinge seat A, 202. Hook, 203. Hook hole, 3. Hinge rod, 4. Limiting ring, 401. Hinge seat B, 402. Hinge seat C, 5. Handle handle, 501. Handle, 6. Elastic hook ring. Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] like Figures 1-6 As shown, the concrete pump pipe leak-proof sealing device includes a sealing cap 2 with a sealing gasket and an operating mechanism. The operating mechanism includes a handle 5, an elastic hook ring 6, a hinge rod 3, and a limiting ring 4. On the opposite side of the sealing cap, one side has a hook 202 with a hook hole 203, and the other side has a hinge seat A201. Hinge seat A is hinged to one end of the hinge rod by a pin, and the other end of the hinge rod is hinged to hinge seat B401 on the side of the limiting ring by a pin. On the other side of the limiting ring opposite to hinge seat B, there is a hinge seat C402. The limiting ring consists of two semicircles, which are connected and fixed by pins at hinge seats B and C and independent bolts. The aforementioned hinge seat C is hinged to the end of the handle rod via a pin. The end of the handle rod near the handle is hinged to one end of the elastic hook ring via a pin. When the handle rod and the elastic hook ring rotate relative to each other, there is no interference between the handle 501 of the handle rod and the hinge seat C of the limiting ring and the elastic hook ring. The circumferential surface of the concrete pump pipe is provided with a limiting part 1013 that limits the bottom surface of the limiting ring, as well as a first hook 101 for suspending the elastic hook ring and a second hook 102 for suspending the hook hole at the cap hook.

[0022] When the cap 2 is closed relative to the opening of the concrete pump pipe 1, the loop of the elastic hook ring 6 is connected to the hook 202 of the cap. When the handle 5 is pushed upward, the handle pulls the elastic hook ring to tighten the hook, and an acute angle is formed between the handle and the horizontal plane of the limiting ring 4 to prevent the handle from rotating in the opposite direction. When the handle is rotated downward with external force, the elastic hook ring separates from the hook, and the cap is open relative to the opening of the concrete pump pipe. In this open state, when the elastic hook ring flips upward, it pulls the handle up, and the loop of the elastic hook ring is suspended from the first hook 101. When the cap is rotated outward and upward, it is suspended from the second hook 102.

[0023] To facilitate manual operation of the handle 5, an operating gap is left between the handle 501 of the handle and the outer wall of the concrete pump pipe when the cap 2 closes the opening of the concrete pump pipe 1.

[0024] To improve the fit and self-adaptation between the cap 2 and the inlet of the concrete pump pipe 1, the hinge rod 3 is in an obliquely tightened state when the cap is closed relative to the inlet of the concrete pump pipe, with the upper end of the hinge rod tilting outward. Furthermore, the hinge rod can also be replaced with an elastic pull ring, which, like the elastic hook ring 6, has elasticity, making the fit between the cap and the inlet of the concrete pump pipe more reliable.

[0025] like Figure 7 As shown, in order to prevent any component from getting close to the opening of the concrete pump pipe 1 after the cover 2 is opened, when the hook 202 of the cover is connected to the second hook suspension 102, the hinge rod 3 and the cover are both located above the hinge seat B401 of the limit ring 4, away from the opening of the concrete pump pipe.

[0026] The operation of this concrete pump pipe anti-leakage sealing device is as follows: When the sealing cap 2 is in the closed state, manually pull the handle 5 outward and downward. After the force between the handle and the hinge seat C402 of the limiting ring 4 is released, the connection between the elastic hook ring 6 and the hook part 202 of the sealing cap can be disengaged, and the sealing cap flips open. Next, manually pull the elastic hook ring upward and suspend it with the first hook 101 on the outside of the concrete pump pipe. The handle also flips upward and into place, with both the handle and the elastic hook ring away from the opening of the concrete pump pipe. At the same time, the sealing cap flips outward and upward until the hook hole 203 of the hook part is suspended and connected to the second hook 102 on the outside of the concrete pump pipe. The sealing cap drives the hinge rod to flip outward or simultaneously flip upward and into place above the hinge seat B401, away from the opening of the concrete pump pipe. This completes the opening operation of the sealing cap. When the sealing cap needs to be closed, simply reverse the above process.

[0027] The above description is intended to illustrate the technical means of this utility model and is not intended to limit the technical scope of this utility model. Any obvious improvements or substitutions made to this utility model by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of this utility model.

Claims

1. A concrete pump pipe anti-leakage sealing device, comprising a sealing cap (2) that forms a closed seal when it is tightly fitted against the surface of the concrete pump pipe (1), and an operating mechanism for opening and closing the sealing cap relative to the concrete pump pipe opening; characterized in that The operating mechanism includes a handle (5), an elastic hook ring (6), a hinge rod (3), and a limiting ring (4). On the opposite side of the cover, one side has a hook (202), and the other side has a hinge seat A (201). Hinge seat A is hinged to one end of the hinge rod, and the other end of the hinge rod is hinged to hinge seat B (401) on the side of the limiting ring. On the other side of the limiting ring opposite to hinge seat B, there is a hinge seat C (402), which is hinged to the end of the handle. The end of the handle near the handle is hinged to one end of the elastic hook ring. When the handle and the elastic hook ring rotate relative to each other, the handle (501) of the handle and the hinge seat C of the limiting ring do not interfere with the elastic hook ring. The circumferential surface of the concrete pump pipe is provided with a limiting part (103) that limits the bottom surface of the limiting ring, and a part for suspending and connecting the elastic hook ring. The cover has a first hook (101) and a second hook (102) for suspending the cap hook. When the cap is closed relative to the concrete pump pipe opening, the loop of the elastic hook ring is connected to the hook of the cap. When the handle is pushed upward, the handle pulls the elastic hook ring to hook the hook, and the handle and the limit ring form an acute angle to prevent the handle from rotating in the opposite direction. When the handle is rotated downward with external force, the elastic hook ring separates from the hook, and the cap is open relative to the concrete pump pipe opening. In this open state, when the elastic hook ring flips upward, the elastic hook ring pulls the handle to the position, the loop of the elastic hook ring is suspended from the first hook, and the cap is suspended from the second hook when it is rotated outward and upward.

2. The concrete pump pipe anti-leakage sealing device according to claim 1, characterized in that... The limiting ring (4) is composed of two half rings, and is relatively fixed by connecting the pivot pins and / or independent bolts at the hinge seat B (401) and hinge seat C (402).

3. The concrete pump pipe anti-leakage sealing device according to claim 1, characterized in that... The hook portion (202) of the cover (2) forms a hook hole (203). When the cover is rotated to the point where the hook portion engages with the second hook (102), the second hook passes through the hook hole to form a hook stop and fixation.

4. The concrete pump pipe anti-leakage sealing device according to claim 1, characterized in that... When the cap (2) closes the opening of the concrete pump pipe (1), there is an operating gap between the handle (501) of the handle (5) and the concrete pump pipe.

5. The concrete pump pipe anti-leakage sealing device according to claim 1, characterized in that... The hinge rod (3) is replaced with an elastic pull ring.

6. The concrete pump pipe anti-leakage sealing device according to claim 1, characterized in that... When the cap (2) is closed relative to the opening of the concrete pump pipe (1), the hinge rod (3) is in an obliquely tightened state, and the oblique direction is that the upper end of the hinge rod is tilted outward.

7. The concrete pump pipe anti-leakage sealing device according to claim 1, characterized in that... When the hook (202) of the cover (2) is suspended and connected to the second hook (102), the hinge rod (3) and the cover are both located on the upper part of the hinge seat B (401) of the limiting ring (4).

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