CN-224201136-U - Stainless steel check valve convenient to maintain

CN224201136UCN 224201136 UCN224201136 UCN 224201136UCN-224201136-U

Abstract

The utility model discloses a stainless steel check valve convenient to maintain, which aims to solve the technical problems that in the prior art, a fluid direction mark is integrally arranged on a stainless steel check valve cover and used for guiding the direction of a valve body during installation, but the reverse installation phenomenon of the valve cover direction is often found during quality inspection before delivery, so that the qualification rate of products and the operation safety of a subsequent system are greatly influenced; the U-shaped connecting frame is hinged with the swing valve clack rocker, a sealing ring is arranged between the valve body and the valve cover, the bolt head of the first bolt is integrally higher than the top surface of the valve body after the first bolt is connected, the valve cover comprises a fluid direction indication mark arranged on the top surface and a limit groove which is arranged at the bottom of the end cover and matched with the bolt head of the first bolt, and when the valve cover is connected, the bolt head of the first bolt is arranged in the limit groove in a non-contact mode.

Inventors

HU JINJING
Pu Houjun
FU CHENKAI
WANG XIANJING
DONG ZIKUN
HU JUNQI
YIN GUANGQIN

Assignees

浙江山力得新材料科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250605

Claims (6)

1. The stainless steel check valve is characterized by further comprising a U-shaped connecting frame fixedly connected with the valve body through a first bolt and a valve cover hermetically connected with the valve body through a second bolt, wherein the U-shaped connecting frame is hinged with the swing valve clack rocker, a sealing ring is arranged between the valve body and the valve cover, the bolt head of the first bolt is integrally higher than the top surface of the valve body after the first bolt is connected, the valve cover comprises a fluid direction indication mark arranged on the top surface and a limiting groove matched with the bolt head of the first bolt and arranged at the bottom of the end cover, and when the valve cover is connected, the bolt head of the first bolt is arranged in the limiting groove in a non-contact mode.
2. The stainless steel check valve convenient to maintain according to claim 1, wherein the diameter of the limiting groove is 1.1-1.5 times of the diameter of the bolt head of the first bolt, and the edge of the notch of the limiting groove is provided with a guiding fillet.
3. The stainless steel check valve convenient to maintain according to claim 1, wherein the valve cover comprises a mark block which is detachably connected, the mark block comprises a main board body which is embedded with the valve cover through threaded connection, the fluid direction indication mark which is integrally formed on the top surface of the main board body and an RFID tag which is embedded in the main board body, and the valve cover is provided with a clamping groove which is matched with the main board body.
4. The stainless steel check valve convenient to maintain according to claim 3, wherein the main plate body is in threaded connection with the valve cover.
5. The stainless steel check valve convenient to maintain according to claim 4, wherein the edge of the main plate body is provided with a limiting clamping groove, correspondingly, the clamping groove is internally provided with a limiting projection matched with the limiting clamping groove, and the limiting clamping groove is in limiting abutting joint with the limiting projection.
6. A stainless steel check valve according to claim 3 wherein said RFID tag is a passive tag.

Description

Stainless steel check valve convenient to maintain Technical Field The utility model relates to the technical field of check valve equipment, in particular to a stainless steel check valve convenient to maintain. Background The swing type stainless steel check valve is used as a key device for preventing backflow of a pipeline system, and is widely applied to the fields of petrochemical industry, water supply and drainage and the like by virtue of the characteristic of automatic opening and closing without external power. The existing swing type stainless steel check valve is characterized in that a valve cover is integrally provided with a fluid direction mark for guiding the direction of a valve body during installation, but the phenomenon that the direction of the valve cover is reversely installed is often found during quality inspection before delivery, so that the qualification rate of products and the operation safety of a subsequent system are greatly influenced. Disclosure of utility model The utility model aims to provide a stainless steel check valve which is convenient to maintain, so as to solve the problems in the background technology. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The stainless steel check valve is characterized by further comprising a U-shaped connecting frame fixedly connected with the valve body through a first bolt and a valve cover hermetically connected with the valve body through a second bolt, wherein the U-shaped connecting frame is hinged with the swing valve clack rocker, a sealing ring is arranged between the valve body and the valve cover, the bolt head of the first bolt is integrally higher than the top surface of the valve body after the first bolt is connected, the valve cover comprises a fluid direction indication mark arranged on the top surface and a limiting groove matched with the bolt head of the first bolt and arranged at the bottom of the end cover, and when the valve cover is connected, the bolt head of the first bolt is arranged in the limiting groove in a non-contact mode. Preferably, the diameter of the limiting groove is 1.1-1.5 times of the diameter of the bolt head of the first bolt, so that assembly tolerance is guaranteed, positioning failure caused by excessive clearance is avoided, and the edge of the notch of the limiting groove is provided with a guide fillet, so that alignment difficulty is reduced, and assembly efficiency is improved. Preferably, the valve cover comprises a mark block which is detachably connected, the mark block comprises a main board body which is embedded with the valve cover through threaded connection, the fluid direction indication mark which is integrally formed on the top surface of the main board body and an RFID tag which is embedded in the main board body, and the valve cover is provided with a clamping groove which is matched with the main board body. And the traditional paper maintenance record is updated to electronic management through the RFID tag embedded in the separable identification block. Maintenance personnel can quickly read unique codes, maintenance history and next maintenance time of the valve body through the handheld terminal, and manual registration omission is avoided. Preferably, the main board body is in threaded connection with the valve cover, so that the main board body is convenient to disassemble, assemble and replace. Preferably, the edge of the main board body is provided with a limiting clamping groove, correspondingly, the clamping groove is internally provided with a limiting projection matched with the limiting clamping groove, the limiting clamping groove is in limiting abutting connection with the limiting projection, and the direction sign reverse installation is stopped. Preferably, the RFID tag is a passive tag, and can work without power supply. Compared with the prior art, the stainless steel check valve convenient to maintain has the following beneficial effects: 1. error-proofing and positioning reinforcement design: The limiting groove arranged at the bottom of the valve cover is matched with the first bolt head in a non-contact mode, and physical limiting constraint is formed during assembly. When the direction of the valve cover is wrong, the position deviation of the bolt head and the limiting groove can not be completely attached, and an operator is forced to adjust the direction to the correct position, so that the problem of reverse installation of the valve cover direction is thoroughly solved. Meanwhile, the diameter of the limiting groove is designed to be 1.1-1.5 times of the diameter of the bolt head, so that assembly tolerance is guaranteed, positioning failure caused by excessive clearance is avoided, alignment difficulty is further reduced by the notch guide fillet, and assembly efficiency is improved. 2. Maintenance management electronic upgrade: The valve clack of the existing swing type stainle