Central overflow drain valve

Abstract

The utility model relates to the technical field of drain valves, in particular to a central overflow drain valve which comprises a valve body and a valve seat, four groups of fixing blocks are mounted at the positions, close to the bottom end, of the side surface of the valve body, rhombic grooves are formed in the fixing blocks, limiting rods are mounted at the bottom ends of the fixing blocks, and the limiting rods are arranged in the rhombic grooves. A drainage hole is formed in the position, close to the bottom end, in the valve seat, and a sealing plug and an overflow pipe are arranged in the drainage hole. By arranging parts such as a fixing block, a rhombic groove, a limiting rod, a mounting ring, a limiting hole, a fixing bolt, a rhombic rod, a connecting block, a supporting rod, a fixing plate and a threaded hole, the problem that in an existing drainage valve, due to the water level difference during drainage, water flows upwards from the bottom of the drainage valve along an overflow pipe at the moment of drainage and splashes to the periphery at the top end is effectively solved. And under the pressure effect of upward spraying of water flow, the valve body and the valve seat are loosened and even fall off, so that the normal use of the drain valve is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of drain valves, in particular to a central overflow drain valve. Background Art

[0002] At present, almost all toilets have a water tank flushing function, which greatly improves the convenience of life. In the existing flush tank, the overflow port is in the middle of the drain valve, which serves as an insurance to prevent the water inlet valve from failing to seal the water and prevent water from flowing out of the tank.

[0003] In the existing drain valve, due to the water level difference during drainage, water will rush up from the bottom of the drain valve along the overflow pipe at the moment of drainage, splash around at the top, and under the pressure of the upward water flow, the valve body and the valve seat will become loose or even fall off, thereby affecting the normal use of the drain valve. Therefore, corresponding improvements are needed to address the above problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a central overflow drain valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a central overflow drain valve comprising a valve body and a valve seat, four groups of fixing blocks are installed on the side surface of the valve body near the bottom end, and diamond grooves are provided inside the fixing blocks, and limiting rods are installed on the bottom ends of the fixing blocks, a drainage hole is provided on the inside of the valve seat near the bottom end, and a sealing plug and an overflow pipe are provided inside the drainage hole, a mounting ring is installed on the side surface of the valve seat near the top end, and four groups of limiting holes are provided inside the mounting ring, a fixing bolt is movably screwed on the inside of the mounting ring near one side of the limiting hole, a diamond rod is movably inserted inside the diamond groove, and a connecting block is installed on one side of the bottom end of the diamond rod, a support rod is installed on the bottom end of the connecting block, and a fixing plate is installed on the bottom end of the support rod, and a threaded hole is provided on the bottom end of the fixing plate.

[0006] Preferably, the four groups of limiting rods are arranged in a one-to-one correspondence with the four groups of limiting holes, and the bottom ends of the four groups of limiting rods pass through the interior of the mounting ring through the corresponding limiting holes respectively.

[0007] Preferably, the four groups of threaded holes are arranged in a one-to-one correspondence with the four groups of fixing bolts, and the top ends of the four groups of fixing bolts respectively extend into the interior of the corresponding threaded holes and are movably screwed thereto.

[0008] Preferably, the connection blocks are all V-shaped, and the bottom ends of the connection blocks are all flat.

[0009] Preferably, the bottom ends of the fixing plates are fitted with the top ends of the mounting rings.

[0010] Preferably, the connecting block, the supporting rod and the fixing plate are arranged on one side of the fixing block, and one side surface of the connecting block is arranged in contact with one side surface of the fixing block.

[0011] Preferably, the valve body and the valve seat are both installed inside the toilet tank.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By arranging components such as fixing blocks, diamond grooves, limiting rods, mounting rings, limiting holes, fixing bolts, diamond rods, connecting blocks, support rods, fixing plates, and threaded holes, the problem in existing drain valves can be effectively solved. During drainage, due to the water level difference, water will rush up from the bottom of the drain valve along the overflow pipe at the moment of drainage, splash around at the top, and under the pressure of the upward water flow, the valve body and the valve seat will become loose or even fall off, thereby affecting the normal use of the drain valve.

[0014] The user can dock and install the top end of the valve body on the top end of the valve seat, so that the four sets of limit rods can respectively pass through the interior of the mounting ring through the corresponding limit holes and perform corresponding preliminary limit clamping settings. After that, the user can insert one end of the four sets of diamond rods into the interior of the corresponding diamond grooves and pass through the interior of the fixing block. At the same time, the connecting block, support rod and fixing plate will be placed on one side of the fixing block, and one side surface of the connecting block will be fitted with one side surface of the fixing block, and the bottom end of the fixing plate will be fitted with the top end of the mounting ring. At this time, the user can turn the fixing screw Bolt, so that the top end of the fixing bolt can extend into the interior of the corresponding threaded hole and be movably screwed therewith, so that the fixing plate can be fixed to the mounting ring. In the same way, the other three sets of fixing plates can be fixed to the mounting ring. So far, the valve body can be limited and fixed on the horizontal plane by the setting of the limiting rod, mounting ring and limiting hole, and the valve body can be limited and fixed on the vertical plane by the setting of the fixing block, diamond groove, fixing bolt, diamond rod, connecting block, support rod, fixing plate and threaded hole, so that the valve body can be stably fixed on the top end of the valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural perspective diagram of the main body of the utility model.

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0017] Figure 3 It is a schematic structural perspective view of the valve seat of the present invention.

[0018] Figure 4 It is a schematic structural perspective view of the valve body of the present utility model.

[0019] Figure 5 It is a schematic structural perspective view of the diamond rod of the present invention.

[0020] In the figure: 1. Valve body; 11. Fixing block; 12. Diamond groove; 13. Limit rod; 2. Valve seat; 21. Drain hole; 22. Sealing plug; 23. Overflow pipe; 24. Mounting ring; 25. Limit hole; 26. Fixing bolt; 3. Diamond rod; 31. Connecting block; 32. Support rod; 33. Fixing plate; 34. Threaded hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] according to Figure 1-Figure 5 As shown, it includes a valve body 1 and a valve seat 2, and the valve body 1 and the valve seat 2 are both installed inside the toilet water tank. Four groups of fixing blocks 11 are installed on the side surface of the valve body 1 near the bottom end, and the interior of the fixing blocks 11 is provided with diamond grooves 12, and the bottom ends of the fixing blocks 11 are provided with limiting rods 13. A drainage hole 21 is provided on the inside of the valve seat 2 near the bottom end, and a sealing plug 22 and an overflow pipe 23 are provided inside the drainage hole 21. A mounting ring 24 is installed on the side surface of the valve seat 2 near the top end, and four groups of limiting holes 25 are provided inside the mounting ring 24. The four groups of limiting rods 13 and the four groups of limiting holes 25 are arranged in a one-to-one correspondence, and the bottom ends of the four groups of limiting rods 13 respectively pass through the interior of the mounting ring 24 through the corresponding limiting holes 25, and a fixing bolt 26 is movably screwed on the side of the limiting hole 25 inside the mounting ring 24.

[0023] The interior of the diamond groove 12 is movably provided with a diamond rod 3, and a connecting block 31 is installed at one side of the bottom end of the diamond rod 3. The connecting block 31 is V-shaped, and the bottom end of the connecting block 31 is flat. The bottom end of the connecting block 31 is installed with a support rod 32, and the bottom end of the support rod 32 is installed with a fixing plate 33. The connecting block 31, the support rod 32 and the fixing plate 33 are arranged on one side of the fixing block 11, and one side surface of the connecting block 31 is fitted with one side surface of the fixing block 11. The bottom end of the fixing plate 33 is fitted with the top end of the mounting ring 24. The bottom end of the fixing plate 33 is provided with a threaded hole 34. The four groups of threaded holes 34 are arranged in a one-to-one correspondence with the four groups of fixing bolts 26, and the top ends of the four groups of fixing bolts 26 respectively extend into the interior of the corresponding threaded holes 34 and are movably screwed therewith.

[0024] When in use, the user can dock the top of the valve body 1 on the top of the valve seat 2, so that the four groups of limit rods 13 can respectively pass through the corresponding limit holes 25 and penetrate the interior of the mounting ring 24 and perform the corresponding preliminary limit clamping setting. After that, the user can insert one end of the four groups of diamond rods 3 into the interior of the corresponding diamond grooves 12 and penetrate the interior of the fixing block 11. At the same time, the connecting block 31, the support rod 32 and the fixing plate 33 will be placed on one side of the fixing block 11, and the one side surface of the connecting block 31 will be in contact with the one side surface of the fixing block 11, and the bottom end of the fixing plate 33 will be in contact with the top of the mounting ring 24. At this time, the user can rotate the fixing bolt 26, so that the top end of the fixing bolt 26 can extend into the interior of the corresponding threaded hole 34 and be movably screwed therewith, so that the fixing plate 33 can be fixed to the mounting ring 24. In the same way, The other three groups of fixing plates 33 can be fixed to the mounting ring 24. At this point, the valve body 1 can be limited and fixed on the horizontal plane by the setting of the limiting rod 13, the mounting ring 24 and the limiting hole 25, and the valve body 1 can be limited and fixed on the vertical plane by the setting of the fixing block 11, the diamond groove 12, the fixing bolt 26, the diamond rod 3, the connecting block 31, the support rod 32, the fixing plate 33 and the threaded hole 34, so that the valve body 1 can be stably fixed on the top of the valve seat 2. Finally, the entire device can be installed in the water tank of the toilet and used normally. The above setting and operation can effectively solve the problem of the existing drain valve that, due to the water level difference during drainage, water will rush up from the bottom of the drain valve along the overflow pipe at the moment of drainage, reach the top and splash around, and under the pressure of the upward water flow, the valve body 1 and the valve seat 2 will become loose or even fall off, thereby affecting the normal use of the drain valve.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A center overflow drain valve, comprising a valve body (1) and a valve seat (2), characterized in that: Four sets of fixing blocks (11) are installed at the bottom end of the side surface of the valve body (1), and the inside of the fixing blocks (11) are provided with diamond grooves (12). The bottom ends of the fixing blocks (11) are provided with limit rods (13). A drainage hole (21) is provided at the bottom end of the inside of the valve seat (2), and a sealing plug (22) and an overflow pipe (23) are provided inside the drainage hole (21). A mounting ring (24) is installed at the top end of the side surface of the valve seat (2), and the inside of the mounting ring (24) is provided with a sealing plug (22) and an overflow pipe (23). Four groups of limiting holes (25) are provided, and a fixing bolt (26) is movably screwed on a position on one side of the limiting hole (25) inside the mounting ring (24), and a diamond rod (3) is movably inserted inside the diamond groove (12), and a connecting block (31) is installed on a position on one side of the bottom end of the diamond rod (3), and a support rod (32) is installed on the bottom end of the connecting block (31), and a fixing plate (33) is installed on the bottom end of the support rod (32), and a threaded hole (34) is opened on the bottom end of the fixing plate (33).

2. A center overflow drain valve according to claim 1, characterized in that: The four groups of limiting rods (13) are arranged in a one-to-one correspondence with the four groups of limiting holes (25), and the bottom ends of the four groups of limiting rods (13) respectively pass through the interior of the mounting ring (24) through the corresponding limiting holes (25).

3. A center overflow drain valve according to claim 1, characterized in that: The four groups of threaded holes (34) are arranged in a one-to-one correspondence with the four groups of fixing bolts (26), and the top ends of the four groups of fixing bolts (26) respectively extend into the interior of the corresponding threaded holes (34) and are movably screwed thereto.

4. A center overflow drain valve according to claim 1, characterized in that: The shape of the connecting blocks (31) is V-shaped, and the bottom ends of the connecting blocks (31) are flat.

5. The center overflow drain valve according to claim 1, characterized in that: The bottom ends of the fixing plates (33) are fitted with the top ends of the mounting rings (24).

6. A center overflow drain valve according to claim 1, characterized in that: The connecting block (31), the supporting rod (32) and the fixing plate (33) are arranged on one side of the fixing block (11), and one side surface of the connecting block (31) is arranged to fit with one side surface of the fixing block (11).

7. The center overflow drain valve according to claim 1, characterized in that: The valve body (1) and the valve seat (2) are both located inside the toilet tank for installation.

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