Magnetic repulsion type grouting check valve

Abstract

A magnetic repulsion type grouting check valve comprises a valve body with a cavity, a flow guide ring is annularly arranged in the cavity, a positioning rod is transversely arranged in the cavity on the upper portion of the flow guide ring, an installation pipe is arranged on the lower portion of the positioning rod, and a first flow guide gap is formed between the bottom of the installation pipe and the flow guide ring. A first magnet and a second magnet which repel each other are arranged in the mounting pipe, the top of the first magnet abuts against the positioning rod, the second magnet is higher than the first flow guide gap, the diameter of the second magnet is larger than the diameter of the top of the flow guide opening of the flow guide ring, and a second flow guide gap is formed between the mounting pipe and the inner wall of the valve body. The height of the mounting pipe is larger than the sum of the heights of the first magnet, the second magnet and the first diversion gap. The permanent powerful magnet provides magnetic force and serves as a sealing element, the structure is simple, reliability is high, the magnetic force is strong, and the sealing effect on a hole channel is greatly improved; the durability, the reliability and the sealing performance of the grouting check valve are improved, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower construction, in particular to a magnetic repulsion type grouting check valve. Background Art

[0002] The core structure of the check valve at the end of the grouting pipe in existing grouting equipment consists of a cylindrical cavity with an open bottom, a spring element inside the cavity that provides elastic force, and a sealing element at the bottom of the cavity that blocks the slurry passage. During grouting, the pressure of the slurry pushes the sealing element open and compresses the spring, opening the passage. When grouting is completed and the valve is closed, the elastic force of the spring element pushes the sealing element out, closing the passage.

[0003] The core component of a grouting check valve is a spring element. During use, excessive slurry pressure can cause the spring to collapse and deform, long-term stress during grouting can cause fatigue failure, and slurry can seep into the cavity and solidify, leading to overall failure. Therefore, the need to develop a magnetic repulsion grouting check valve that can address these existing technical issues has become a technical challenge. Utility Model Content

[0004] The present invention is based on the above technical problems and proposes a magnetic repulsion type grouting check valve to solve the problems existing in the above background technology.

[0005] In view of this, the utility model proposes a magnetic repulsion grouting check valve, which includes: a valve body with a cavity as its interior, a guide ring is circumferentially arranged in the cavity, a positioning rod is horizontally arranged between the cavity on the upper part of the guide ring, a mounting tube is arranged at the lower part of the positioning rod, a first guide gap is arranged between the bottom of the mounting tube and the guide ring, a first magnet and a second magnet that repel each other are arranged in the mounting tube, the top of the first magnet abuts the positioning rod, the height of the second magnet is greater than the height of the first guide gap, the diameter of the second magnet is greater than the top diameter of the guide port of the guide ring, a second guide gap is arranged between the mounting tube and the inner wall of the valve body, and the height of the mounting tube is greater than the sum of the heights of the first magnet, the second magnet and the first guide gap.

[0006] Furthermore, a rubber sealing gasket is provided at the bottom of the second magnet.

[0007] Furthermore, the guide port structure is funnel-shaped, and the diameter of the bottom of the guide port is larger than the diameter of the top of the guide port.

[0008] Furthermore, a grouting pipe connection portion is provided at the bottom of the valve body, and a valve port is provided at the top of the valve body with a funnel-shaped diameter.

[0009] Furthermore, the first magnet and the second magnet are both permanent strong magnets.

[0010] Furthermore, the positioning rod is structured as a horizontal crossbar.

[0011] Furthermore, a slot is provided in the cavity, and both ends of the positioning rod are engaged in the slot.

[0012] The utility model proposes a magnetic repulsion type grouting check valve. Compared with the existing technology, the utility model adopts a permanent strong magnet to provide magnetic force and serve as a sealing element. The structure is simple and the reliability is high, which avoids various structural failure problems that are prone to occur in spring connections. The permanent strong magnet has strong magnetic force, which greatly improves the sealing effect of the channel. The use of the utility model improves the durability, reliability and sealing of the grouting check valve and reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Shows a three-dimensional structural cross-sectional view of the utility model;

[0014] Figure 2 Shows a planar structural sectional view of the present utility model;

[0015] In the figure: 1 guide ring, 2 first magnet, 3 second magnet, 4 guide port, 5 cavity, 6 positioning rod, 7 mounting pipe, 8 first guide gap, 9 valve body, 10 second guide gap, 11 valve port, 12 rubber sealing gasket, 13 grouting pipe connection part. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the contents disclosed below.

[0018] The following combination Figure 1 and Figure 2 The technical solution of the utility model is further explained.

[0019] The first embodiment, as Figure 1 and Figure 2As shown: A magnetic repulsion grouting check valve, which includes: a valve body 9 with a cavity 5 set inside, a guide ring 1 arranged circumferentially in the cavity 5, a positioning rod 6 arranged horizontally between the cavity 5 on the upper part of the guide ring 1, a mounting tube 7 arranged at the lower part of the positioning rod 6, a first guide gap 8 arranged between the bottom of the mounting tube 7 and the guide ring 1, a first magnet 2 and a second magnet 3 that repel each other are arranged in the mounting tube 7, the top of the first magnet 2 abuts the positioning rod 6, the height of the second magnet 3 is greater than the height of the first guide gap 8, the diameter of the second magnet 3 is greater than the top diameter of the guide port 4 of the guide ring 1, a second guide gap 10 is arranged between the mounting tube 7 and the inner wall of the valve body 9, and the height of the mounting tube 7 is greater than the sum of the heights of the first magnet 2, the second magnet 3 and the first guide gap 8.

[0020] A rubber sealing gasket 12 is provided at the bottom of the second magnet 3. The diversion port 4 is funnel-shaped, with a diameter at the bottom larger than the diameter at the top. A grouting pipe connection 13 is provided at the bottom of the valve body 2, and a valve port 11 is provided at the top of the valve body 2, which is funnel-shaped.

[0021] The first magnet 2 and the second magnet 3 are both permanent strong magnets. The positioning rod 6 is a horizontal crossbar. The cavity 5 is provided with a slot, and the two ends of the positioning rod 6 are engaged with the slot.

[0022] During use: the spring element providing elastic force inside the cavity 5 of the existing check valve core structure is replaced with two permanent strong magnets, with the same poles placed at the top and bottom of the mounting tube 7 respectively; the device is installed at the end of the grouting pipeline. When the grouting valve is opened, the second magnet 3 moves upward under the pressure of the slurry, so that the first guide gap 8 is opened, and the grouting operation can be carried out; when the grouting valve is closed, the second magnet 3 moves downward under the repulsive force of the first magnet 2, blocking the first guide gap 8.

[0023] The permanent strong magnet of the utility model provides magnetic force and serves as a sealing element, has a simple structure and high reliability, and avoids various structural failure problems that are prone to occur in spring connections; the permanent strong magnet has strong magnetic force, which greatly improves the sealing effect of the channel; the use of the utility model improves the durability, reliability and sealing of the grouting check valve, and reduces construction costs.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A magnetic repulsion grouting check valve, characterized by: The valve body comprises a valve body with a cavity as an interior, a guide ring is circumferentially arranged in the cavity, a positioning rod is horizontally arranged between the cavities on the upper part of the guide ring, a mounting tube is arranged at the lower part of the positioning rod, a first guide gap is arranged between the bottom of the mounting tube and the guide ring, a first magnet and a second magnet that repel each other are arranged in the mounting tube, the top of the first magnet abuts the positioning rod, the height of the second magnet is greater than the height of the first guide gap, the diameter of the second magnet is greater than the top diameter of the guide port of the guide ring, a second guide gap is arranged between the mounting tube and the inner wall of the valve body, and the height of the mounting tube is greater than the sum of the heights of the first magnet, the second magnet and the first guide gap.

2. The magnetic repulsion grouting check valve according to claim 1 is characterized in that: A rubber sealing pad is provided at the bottom of the second magnet.

3. The magnetic repulsion grouting check valve according to claim 2 is characterized in that: The guide port structure is funnel-shaped, and the diameter of the bottom of the guide port is larger than the diameter of the top of the guide port.

4. The magnetic repulsion grouting check valve according to claim 3 is characterized in that: The bottom of the valve body is provided with a grouting pipe connection portion, and the top of the valve body is funnel-shaped and provided with a valve port.

5. The magnetic repulsion grouting check valve according to claim 4 is characterized in that: The first magnet and the second magnet are both permanent strong magnets.

6. The magnetic repulsion grouting check valve according to claim 5, characterized in that: The structure of the positioning rod is a horizontal crossbar.

7. The magnetic repulsion grouting check valve according to claim 6, characterized in that: A clamping slot is provided in the cavity, and both ends of the positioning rod are clamped in the clamping slot.

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