One-way valve for rubber waterstop joint box

Abstract

The present invention relates to a one-way valve for a rubber waterstop joint box, comprising a box body, a mesh plate, a magnetic rubber pad, and a waterproof electromagnet. The box body comprises an inner and outer cavity; the inner cavity and the outer cavity are separated by a partition plate, the partition plate being provided with a through hole that penetrates the inner and outer cavities, the partition plate being mounted to cover the through hole, and the mesh plate being mounted on the outer side of the outer cavity of the box body; and a waterproof electromagnet being mounted on the inner side of the inner cavity of the box body for attracting the magnetic rubber pad. The technical solution of the present invention can automatically drain muddy water that has seeped into the box body when the joint box is lifted out of the floor and wall trough section; when the joint box is inserted into the muddy water of the floor and wall trough section, the muddy water is prevented from reversely entering the box body through the drainage hole; and the structure of the present invention can be prevented from being damaged by gravel and the like.

Description

Technical Field

[0001] The invention relates to an underground continuous wall joint box, in particular to a one-way valve of a joint box for a rubber waterstop joint in underground continuous wall construction. Background Art

[0002] Underground continuous walls are underground structures widely used in construction. Using rubber waterstops in ground-wall joints effectively prevents groundwater leakage. However, the accompanying joint box utilizes a multi-section assembly with a release mechanism, which inevitably creates gaps that allow mud from the ground trench to enter the joint box. This makes it difficult for the mud to drain out of the box, significantly increasing the weight of the joint box and making it more difficult to hoist. Furthermore, any residual mud makes subsequent cleaning difficult, significantly reducing the operability of the rubber waterstop joint box. Designing a non-destructible one-way valve that can effectively drain mud from the box became a pressing issue. Summary of the Invention

[0003] The present invention provides a one-way valve for a rubber waterstop joint box. The one-way valve utilizes the pressure difference between the mud and water on both sides of the box body to prevent it from opening in the mud and water in the trough section and to isolate the inside and outside of the box body. When the joint box is lifted and leaves the mud and water, the one-way valve will automatically open again under the pressure of the residual mud and water in the box body, thereby discharging the residual mud and water.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a one-way valve for a rubber waterstop joint box, comprising a box body, a mesh plate, a magnetic rubber pad, and a waterproof electromagnet, the box body comprising two inner and outer cavities; the inner cavity and the outer cavity are separated by a partition, and a through hole that can pass through the inner cavity and the outer cavity is provided on the partition, a magnetic rubber pad covering the through hole is installed on the partition, and a mesh plate is installed on the outside of the outer cavity of the box body; a waterproof electromagnet is installed on the inside of the inner cavity of the box body for adsorbing the magnetic rubber pad.

[0005] Furthermore, the box body is a metal welded part, and mesh holes are opened on the four sides of the inner cavity, so that muddy water that seeps into the junction box flows from the inner cavity into the outer cavity and then out of the box body.

[0006] Furthermore, the material of the magnetic rubber pad is cord rubber containing magnetic powder, with nylon cord in the middle and rubber inside and outside. The rubber contains a certain proportion of magnetic powder, and its size can completely cover the through hole in the box.

[0007] Furthermore, the upper portion of the magnetic rubber pad is fixed to the box partition by a pressing plate, and the lower portion covers the through hole, so that the magnetic powder can be adsorbed on the partition.

[0008] Furthermore, the pressing plate fixes the magnetic rubber pad to the outer surface of the partition in the box body through bolts, covering the through hole thereon.

[0009] Furthermore, the waterproof electromagnet is a component structure with a core rod in the center. When power is applied, the core rod is pushed out, thereby pushing out the magnetic rubber pad; when power is removed, the core rod retracts, and a tension spring is installed on the core rod to provide auxiliary retraction power.

[0010] Furthermore, a water level gauge is installed on the waterproof electromagnet housing to serve as a basis for judging the amount of water in the box, to prevent the water pressure in the box from being too low to open the magnetic rubber pad when the water level is low.

[0011] Furthermore, the grid plate is a flat metal plate with an array of evenly distributed through holes arranged in a rectangular or plum blossom shape. The through holes are circular or diamond-shaped and have a size of 15-30 mm, which can prevent gravel outside the box from pressing on the magnetic rubber pad.

[0012] Furthermore, the grid plate is fixed to the outer surface of the box body by bolts.

[0013] Furthermore, a one-way valve for the rubber waterstop joint box is arranged in the bottom section of the joint box, which is used to automatically discharge the mud and water that have seeped into the box body when the joint box is lifted out of the ground wall groove section; when the joint box is inserted into the mud and water in the ground wall groove section, it prevents the mud and water from entering the box body from the drainage hole in the opposite direction.

[0014] The beneficial effects of the present invention are:

[0015] By adopting the technical solution of the present invention, muddy water that has seeped into the box body can be automatically discharged when the junction box is lifted out of the ground wall groove section; when the junction box is inserted into the muddy water of the ground wall groove section, the muddy water is prevented from reversely entering the box body through the drainage hole; and gravel and the like can be prevented from damaging the structure of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram of the installation of the one-way valve of the present invention in a box;

[0017] Figure 2 It is a structural diagram of the one-way valve of the present invention. DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, a one-way valve 10 for a rubber waterstop joint box of the present invention is arranged in the bottom section of the joint box. It can automatically discharge muddy water that has seeped into the box body when the joint box is lifted out of the ground wall groove section; when the joint box is inserted into the muddy water of the ground wall groove section, it prevents the muddy water from reversely entering the box body from the drainage hole.

[0020] like Figure 2 As shown, a one-way valve for a rubber waterstop joint box of the present invention comprises a box body 1, a mesh plate 2, a pressure plate 3, a magnetic rubber pad 4, a waterproof electromagnet 5 and other auxiliary components.

[0021] The box body 1 is a metal welded box body, which is welded to the inner side of the back plate of the junction box. The box body 1 is divided into two cavities, the inner and outer cavities, which are separated by a partition 11 in the middle. There is a circular through-hole on the partition 11, which can pass through the two cavities. The remaining surfaces of the inner cavity are provided with mesh holes. The upper part of the magnetic rubber pad 4 is fixed to the partition 11 by the pressure plate 3, and the lower part covers the circular through-hole on the partition 11. The magnetism of the magnetic rubber pad 4 enables it to be adsorbed on the partition 11 and seal the circular through-hole on the partition 11; the connection method is bolt fixing. The waterproof electromagnet 5 is fixed to the inner cavity, and its core rod is aligned with the magnetic rubber pad 4 and pressed against it. The mesh plate 2 is installed on the outer surface of the box body 1, flush with the surface of the junction box, and the connection method is bolt fixing.

[0022] When the junction box is lowered into the ground wall groove section, the magnetic rubber pad 4 covers the circular through hole on the partition 11 by magnetic attraction, so that external muddy water cannot reversely enter the junction box through the through hole. The muddy water can only penetrate into the interior through the opening gap of the junction box.

[0023] The grid plate 2 blocks the soil clods, gravel, etc. in the external muddy water and isolates the stone ingredients in the concrete during the concrete pouring, thereby preventing the magnetic rubber pad 4 from being pressed and fed, causing the circular through hole on the partition plate 11 to be opened in the reverse direction.

[0024] When the joint box is lifted to the mud level of the tank section, the muddy water infiltrating the joint box pushes away the magnetic rubber pad 4 under the action of gravity and flows out from the circular through hole on the partition 11.

[0025] When the water level gauge of waterproof electromagnet 5 detects that the water level has dropped to a point where it cannot push open magnetic rubber pad 4, it sends a signal, causing the core rod of waterproof electromagnet 5 to extend outward, pressing against magnetic rubber pad 4 to prevent it from rebounding under the magnetic force, thus closing the channel. Waterproof electromagnet 5 has a timer that sends another signal a certain amount of time after the water level gauge signal, causing the core rod to retract. Waterproof electromagnet 5 also has a replaceable power supply that can be replaced before use or during maintenance of the junction box.

Claims

1. A one-way valve for a rubber waterstop joint box, characterized by: It includes a box body, a grid plate, a magnetic rubber pad, and a waterproof electromagnet. The box body includes two inner and outer cavities. The inner cavity and the outer cavity are separated by a partition. There is a through hole on the partition that passes through the inner cavity and the outer cavity. A magnetic rubber pad covering the through hole is installed on the partition. A grid plate is installed on the outside of the outer cavity of the box body. A waterproof electromagnet is installed on the inside of the inner cavity of the box body. The waterproof electromagnet is a component structure with a core rod in the center. When power is applied, the core rod is pushed out, and then the magnetic rubber pad is pushed out. When power is off, the core rod retracts, and a tension spring is installed on the core rod to provide auxiliary retraction power. A water level gauge is installed on the outer shell of the waterproof electromagnet as a basis for judging the water amount in the box body to prevent the water pressure in the box from being too low to open the magnetic rubber pad when the water level is low.

2. The one-way valve for the rubber waterstop joint box according to claim 1, characterized in that: The box body is a metal welded part, and mesh holes are opened on all sides of the inner cavity to allow muddy water that seeps into the junction box to flow from the inner cavity to the outer cavity and then be discharged from the box body.

3. The one-way valve for the rubber waterstop joint box according to claim 1 is characterized in that: The material of the magnetic rubber pad is cord rubber containing magnetic powder, with nylon cord in the middle and rubber inside and outside. The rubber contains a certain proportion of magnetic powder, and its size can completely cover the through holes in the box.

4. The one-way valve for a rubber waterstop joint box according to claim 1, characterized in that: The upper part of the magnetic rubber pad is fixed on the box partition by a pressing plate, and the lower part covers the through hole, so that the magnetic powder can be adsorbed on the partition.

5. The one-way valve for the rubber waterstop joint box according to claim 4, characterized in that: The pressing plate fixes the magnetic rubber pad to the outer surface of the partition in the box body through bolts, covering the through holes thereon.

6. The one-way valve for a rubber waterstop joint box according to claim 1, characterized in that: The grid plate is a flat metal plate with an array of evenly distributed through holes arranged in a rectangular or plum blossom shape. The through holes are circular or diamond-shaped, and the size of the through holes is 15-30mm, which can prevent gravel outside the box from pressing on the magnetic rubber pad.

7. The one-way valve for a rubber waterstop joint box according to claim 6, characterized in that: The grid plate is fixed to the outer surface of the box by bolts.

8. The one-way valve for a rubber waterstop joint box according to any one of claims 1 to 7, characterized in that: The one-way valve of the rubber waterstop joint box is set in the bottom section of the joint box, which is used to automatically discharge the muddy water that has seeped into the box body when the joint box is lifted out of the ground wall groove section; when the joint box is inserted into the muddy water of the ground wall groove section, it prevents the muddy water from entering the box body from the drainage hole in the opposite direction.

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