CN-224214781-U - Drain valve

CN224214781UCN 224214781 UCN224214781 UCN 224214781UCN-224214781-U

Abstract

The utility model relates to the technical field of drainage devices, in particular to a drainage valve, which comprises a tubular valve body, a locking nut and a plug, wherein one end of the tubular valve body extends outwards in the radial direction to form a baffle ring, an external thread is arranged on the outer surface of the tubular valve body, the locking nut is connected with the external thread of the tubular valve body in a matched manner, an internal thread is arranged in one end of the tubular valve body far away from the baffle ring, an external thread is arranged outside the plug, the external thread of the plug is connected with the internal thread of the tubular valve body in a matched manner, a connecting rod is arranged at the end of the plug far from one end of a handheld part, and a limit stay rod is arranged at the end of the connecting rod and used for limiting the connecting rod to be pulled out from the tubular valve body. According to the utility model, the tubular valve body and the lock nut are arranged on the box body, the plug is used for sealing, the plug is connected with the tubular valve body through the connecting rod and the limit stay rod, and the plug cannot be completely separated in the drainage process, so that the plug cannot be lost, and the service performance is improved.

Inventors

BU YUFENG
ZHANG ZHENYUAN
ZHANG HONGYI
SHANG CHUNJIE
XU XIAOMING
ZHU WEI
Bu Chengdao

Assignees

浙江正基塑业股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250515

Claims (5)

1. The drain valve is characterized by comprising a tubular valve body, a lock nut and a plug, wherein one end of the tubular valve body extends outwards in the radial direction to form a baffle ring, a first sealing ring is sleeved on the tubular valve body at the inner side of the baffle ring, external threads are arranged on the outer surface of the tubular valve body, the lock nut is connected with the external threads of the tubular valve body in a matched manner, internal threads are arranged at the inner part of one end of the tubular valve body far away from the baffle ring, one end of the plug extends outwards in the radial direction to form a handheld part, external threads are arranged at the outer part of the plug, the external threads of the plug are connected with the internal threads of the tubular valve body in a matched manner, a second sealing ring is arranged between the external threads of the plug and the handheld part, a connecting rod is arranged at the end part of the plug far away from one end of the handheld part, the connecting rod extends in the axial direction, and a limit stay rod is arranged at the end of the connecting rod and is used for limiting the connecting rod to be pulled out from the tubular valve body.
2. The drain valve of claim 1, wherein the number of the limiting support rods is at least two, the limiting support rods are arranged along the radial direction of the connecting rod, the limiting support rods are uniformly arranged at intervals, and the diameter of the circumference of the outermost end of the limiting support rod is larger than the inner diameter of the internal thread in the tubular valve body and smaller than the inner diameter of the tubular valve body.
3. A drain valve as defined in claim 2, wherein the internal thread of the tubular valve body is located at an end far from the stop ring, the limit stay is located within the tubular valve body when the plug is tightly fitted with the tubular valve body, and a gap exists between the plug and the tubular valve body when the plug is disengaged from the tubular valve body and the limit stay is in contact with an end of the internal thread of the tubular valve body.
4. A drain valve according to claim 1, 2 or 3, wherein the tubular valve body comprises two sections of pipe bodies with different pipe diameters, namely a first pipe body and a second pipe body, the first pipe body and the second pipe body are connected into a whole, the outer diameter of the first pipe body is larger than that of the second pipe body, the baffle ring is arranged at the end part of the first pipe body, the external thread on the tubular valve body is arranged on the second pipe body, the internal thread of the tubular valve body is arranged in the second pipe body, the lock nut comprises a third pipe body, a locking part extends outwards in the radial direction at one end of the third pipe body, the outer surface of the locking part is of a regular hexagon structure, the internal thread is arranged in the third pipe body, the internal thread of the third pipe body is connected with the external thread of the second pipe body in a matched mode, and the outer diameter of the third pipe body is identical with that of the first pipe body.
5. A drain valve according to claim 1, wherein the outer surface of the hand-held portion of the plug is provided with an anti-slip structure.

Description

Drain valve Technical Field The utility model relates to the technical field of drainage devices, in particular to a drainage valve. Background In the prior art, a drain valve is required to be arranged on a box body such as a thermal insulation box and the like so as to drain water inside. The existing drain valve is generally fixed by a valve body and a lock nut to form a drain pipe structure, and a plug is arranged in the drain pipe structure to realize drainage or plugging. However, in actual use, because a certain time is needed for drainage after the plug is detached, the plug is separated from the valve body, and the situation that the plug is lost often occurs, so that the normal use of the box body is affected. Disclosure of utility model The utility model aims to solve the technical defects and provide the drain valve which can prevent the plug from being completely separated from the tubular valve body during drainage, so that the situation of loss of the plug is avoided. The utility model discloses a drain valve, which comprises a tubular valve body, a lock nut and a plug, wherein one end of the tubular valve body extends outwards in the radial direction to form a baffle ring, a first sealing ring is sleeved on the tubular valve body at the inner side of the baffle ring, an external thread is arranged on the outer surface of the tubular valve body, the lock nut is connected with the external thread of the tubular valve body in a matched manner, an internal thread is arranged at the inner part of one end of the tubular valve body far away from the baffle ring, one end of the plug extends outwards in the radial direction to form a handheld part, the external thread of the plug is arranged at the outer part of the plug, the external thread of the plug is connected with the internal thread of the tubular valve body in a matched manner, a second sealing ring is arranged between the external thread of the plug and the handheld part, a connecting rod is arranged at the end of the plug far away from one end of the handheld part, the connecting rod extends in the axial direction, and a limit stay rod is arranged at the end of the connecting rod, and is used for limiting the connecting rod to be pulled out from the tubular valve body. The limiting support rods are at least two, are arranged along the radial direction of the connecting rod, are uniformly distributed at intervals, and have the diameter of the circumference where the outermost end of the limiting support rod is located larger than the inner diameter of the inner thread in the tubular valve body and smaller than the inner diameter of the tubular valve body. The internal thread in the tubular valve body is located the one end of keeping away from the baffle ring, when end cap and tubular valve body close fit, spacing vaulting pole is located tubular valve body within range, when end cap and tubular valve body release and spacing vaulting pole and tubular valve body's internal thread tip contact, there is the clearance between end cap and the tubular valve body. The tubular valve body comprises two sections of pipe bodies with different pipe diameters, namely a first pipe body and a second pipe body, the first pipe body and the second pipe body are connected into a whole, the outer diameter of the first pipe body is larger than that of the second pipe body, the baffle ring is arranged at the end part of the first pipe body, the external threads on the tubular valve body are arranged on the second pipe body, the internal threads of the tubular valve body are arranged in the second pipe body, the lock nut comprises a third pipe body, a locking part extends outwards along the radial direction at one end of the third pipe body, the outer surface of the locking part is of a regular hexagon structure, the internal threads are arranged in the third pipe body, the internal threads of the third pipe body are connected with the external threads of the second pipe body in a matched manner, and the outer diameter of the third pipe body is consistent with that of the first pipe body. The outer surface of the handheld part of the plug is provided with an anti-slip structure. According to the drain valve, the tubular valve body and the lock nut are arranged on the box body, the plug is used for sealing, the plug is connected with the tubular valve body through the connecting rod and the limiting stay rod, and the plug cannot be completely separated in the drainage process, so that the drain valve cannot be lost, and the service performance is improved. Drawings FIG. 1 is a front elevational view of the structure of the present utility model; FIG. 2 is a schematic view of section A-A of FIG. 1; fig. 3 is a perspective view of the structure of the present utility model. Detailed Description In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will