阅读说明：本技术 螺纹式安全阀 (Thread type safety valve ) 是由 干爱根 赵章旭 郭勇 李建荣 胡国辉 于 2019-10-08 设计创作，主要内容包括：本发明涉及一种螺纹式安全阀,包括阀体、阀座、阀瓣、阀盖、压力整定装置,压力整定装置采用弹簧压力调节装置,阀体侧壁设有连通阀腔的泄放口；其特征是：在阀体中部外圆壁安装调节套,该调节套与阀体中部外圆壁之间动配合,调节套内腔壁与阀体泄放口上侧外圆壁之间设有上O型密封圈,调节套内腔壁与阀体泄放口下侧外圆壁之间设有下O型密封圈,在上O型密封圈与下O型密封圈之间的调节套侧壁设有连通阀体泄放口的出口接管,在位于上O型密封圈上侧的阀体上设有档圈,档圈下端面与调节套上端面之间具有可调节距离。可通过旋转或上下移动调节套将出口接管与外接系统管道对齐安装,安装方便,安装费用低。(The invention relates to a threaded safety valve, which comprises a valve body, a valve seat, a valve clack, a valve cover and a pressure setting device, wherein the pressure setting device adopts a spring pressure adjusting device, and the side wall of the valve body is provided with a discharge port communicated with a valve cavity; the method is characterized in that: an adjusting sleeve is arranged on the outer circular wall of the middle of the valve body and is in movable fit with the outer circular wall of the middle of the valve body, an upper O-shaped sealing ring is arranged between the inner wall of the adjusting sleeve and the outer circular wall on the upper side of the valve body discharge port, a lower O-shaped sealing ring is arranged between the inner wall of the adjusting sleeve and the outer circular wall on the lower side of the valve body discharge port, an outlet connecting pipe communicated with the valve body discharge port is arranged on the side wall of the adjusting sleeve between the upper O-shaped sealing ring and the lower O-shaped sealing ring, a retaining ring is arranged on the valve body on the upper side of the upper O-shaped. The outlet connecting pipe and the external system pipeline can be aligned and installed by rotating or vertically moving the adjusting sleeve, the installation is convenient, and the installation cost is low.)

1. A threaded safety valve comprises a valve body (2), a valve seat (1), a valve clack (5), a valve cover (10) and a pressure setting device, wherein the inlet end of the valve seat (1) is provided with threads which are connected with a medium pipeline, the lower end surface of the valve clack (5) is provided with a valve clack sealing surface which is matched with the valve seat sealing surface, the pressure setting device adopts a spring pressure adjusting device, a spring (8) of the pressure setting device is arranged in a valve cavity between the back surface of the valve clack (5) and the valve cover (10), and the side wall of the valve body (2) is provided with a discharge; the method is characterized in that: an adjusting sleeve (4) is installed on the outer circular wall of the middle of a valve body (2), the adjusting sleeve (4) is in movable fit with the outer circular wall of the middle of the valve body (2), an O-shaped sealing ring (6) is arranged between the inner cavity wall of the adjusting sleeve (4) and the outer circular wall of the upper side of a discharge opening of the valve body (2), a lower O-shaped sealing ring (3) is arranged between the inner cavity wall of the adjusting sleeve (4) and the outer circular wall of the lower side of the discharge opening of the valve body (2), an outlet connecting pipe communicated with the discharge opening of the valve body (2) is arranged on the side wall of the adjusting sleeve (4) between the upper O-shaped sealing ring (6) and the lower O-shaped sealing ring (3), a baffle ring (7) is arranged on the valve body (2) on the upper side of the upper O-shaped sealing ring (6.

2. The threaded safety valve as claimed in claim 1, wherein the valve cover (10) is internally threaded and is interconnected with external threads on the outer circumferential surface of the upper portion of the valve body (2), the spring (8) is mounted between the lower end surface of the valve cover (10) and the back surface of the valve clack (5) through a spring cap (9), the upper end of the spring (8) is in abutting contact with the lower end surface of the spring cap (9), the lower end of the spring (8) is in abutting contact with the back surface of the valve clack (5), and the outer circumferential surface of the spring cap (9) is in movable fit with the inner cavity wall of the.

3. A threaded safety valve according to claim 2, characterized in that an upper spring seat is provided between the upper end of the spring (8) and the lower end face of the spring cap (9), a lower spring seat is provided between the lower end of the spring (8) and the back of the valve flap (5), the upper end face of the upper spring seat is in contact with the conical hole of the lower end face of the spring cap (9) by a conical surface, and the lower end face of the lower spring seat is in contact with the conical hole of the center of the back of the valve flap (5) by a conical surface.

Technical Field

The invention belongs to the field of valves, and particularly relates to a thread-mounted safety valve.

Background

The inlet end of the thread-mounted safety valve is mounted on a pressure container or a pressure pipeline by adopting threads, the medium is not allowed to be discharged to the outside on a plurality of medium containers or conveying pipelines, the discharged medium is recovered by a safety valve discharge port through a recovery pipeline, and the discharge port is generally connected with the recovery pipeline through a flange or threads. The main disadvantages are: when the installation is finished, the outlet side thread or the flange of the safety valve is possibly inconsistent with the position of the outlet side recovery pipeline in the horizontal or vertical direction, the position of the outlet recovery pipeline needs to be changed, the outlet recovery pipeline is aligned with the safety valve discharge port, the installation is troublesome, and the installation cost is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the threaded safety valve which is convenient to install and low in installation cost.

The technical scheme of the invention comprises a valve body, a valve seat, a valve clack, a valve cover and a pressure setting device, wherein the valve seat is arranged at the inlet side of the valve body, the inlet end of the valve seat is provided with threads which are mutually connected with a medium pipeline, the sealing surface at the outlet end of the valve seat extends into a valve cavity, the lower end surface of the valve clack is provided with a valve clack sealing surface which is mutually matched with the sealing surface of the valve seat, the pressure setting device adopts a spring pressure adjusting device, a spring of the spring is arranged in the valve cavity between the back surface of; the method is characterized in that: the adjusting sleeve is mounted on the outer circular wall of the middle of the valve body and is in movable fit with the outer circular wall of the middle of the valve body, an upper O-shaped sealing ring is arranged between the inner wall of the adjusting sleeve and the outer circular wall of the upper side of the valve body discharge opening, a lower O-shaped sealing ring is arranged between the inner wall of the adjusting sleeve and the outer circular wall of the lower side of the valve body discharge opening, an outlet connecting pipe communicated with the valve body discharge opening is arranged on the side wall of the adjusting sleeve between the upper O-shaped sealing ring and the lower O-shaped sealing ring, a retainer ring is arranged on the valve body on the upper side of the upper O-shaped sealing ring and is matched with the external thread of the outer circular surface of.

Preferably, the valve cover is connected with the external thread on the external circular surface of the upper part of the valve body by adopting internal threads, the spring is arranged between the lower end surface of the valve cover and the back surface of the valve clack by the spring cap, the upper end of the spring is in abutting contact with the lower end surface of the spring cap, the lower end of the spring is in abutting contact with the back surface of the valve clack, and the external circular surface of the spring cap is in movable fit with.

Preferably, an upper spring seat is arranged between the upper end of the spring and the lower end face of the spring cap, a lower spring seat is arranged between the lower end of the spring and the back face of the valve clack, the upper end face of the upper spring seat is in mutual abutting contact with a conical hole in the lower end face of the spring cap through a conical surface, and the lower end face of the lower spring seat is in mutual abutting contact with a conical hole in the center of the back face of the valve clack through a.

Compared with the prior art, the invention has the beneficial effects that: the outlet connecting pipe is movably arranged on the valve body through the adjusting sleeve, the outlet connecting pipe and the external system pipeline can be aligned and arranged through rotating or vertically moving the adjusting sleeve, the direction and position structure of the external system pipeline does not need to be changed, the installation is convenient, and the installation cost is low.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The threaded safety valve as shown in fig. 1 comprises a valve body 2, a valve seat 1, a valve clack 5, a valve cover 10 and a pressure setting device, wherein the valve seat 1 is arranged at the inlet side of the valve body 2, the inlet end of the valve seat 1 is provided with threads which are mutually connected with a medium pipeline, the sealing surface at the outlet end of the valve seat extends into a valve cavity, namely, the inlet end of the valve seat 1 is arranged on the medium pipeline or a container by adopting the threads, the lower end surface of the valve clack 5 is provided with a valve clack sealing surface which is mutually matched with the sealing surface of the valve seat, the pressure setting device adopts a spring pressure adjusting device, a spring 8 of the pressure setting; the method is characterized in that: an adjusting sleeve 4 is arranged on the outer circular wall of the middle part of a valve body 2, the adjusting sleeve 4 is in movable fit with the outer circular wall of the middle part of the valve body 2, an upper O-shaped sealing ring 6 is arranged between the inner cavity wall of the adjusting sleeve 4 and the outer circular wall of the upper side of a discharge opening of the valve body 2, a lower O-shaped sealing ring 3 is arranged between the inner cavity wall of the adjusting sleeve 4 and the outer circular wall of the lower side of the discharge opening of the valve body 2, an outlet connecting pipe communicated with the discharge opening of the valve body 2 is arranged on the side wall of the adjusting sleeve 4 between the upper O-shaped sealing ring 6 and the lower O-shaped sealing ring 3, the outlet connecting pipe is connected with an external system pipeline by threads or flanges, a baffle ring 7 is arranged on the valve body 2 positioned on the upper side of the upper O-shaped sealing ring 6, the baffle ring 7 is mutually matched with the external threads of the outer circular surface of the upper, the adjusting sleeve 4 can be rotated horizontally and displaced vertically between the radial shoulder and the securing ring 7.

The valve cover 10 is connected with the external thread of the outer circular surface of the upper part of the valve body 2 by adopting an internal thread, the spring 8 is arranged between the lower end surface of the valve cover 10 and the back surface of the valve clack 5 through the spring cap 9, the upper end of the spring 8 is in top contact with the lower end surface of the spring cap 9, the lower end of the spring 8 is in top contact with the back surface of the valve clack 5, the outer circular surface of the spring cap 9 is in movable fit with the inner cavity wall of the valve body 2, the axial position of the valve cover 10 on the valve.

An upper spring seat is arranged between the upper end of the spring 8 and the lower end face of the spring cap 9, a lower spring seat is arranged between the lower end of the spring 8 and the back face of the valve clack 5, the upper end face of the upper spring seat is in mutual abutting contact with a conical hole in the lower end face of the spring cap 9 through a conical surface, and the lower end face of the lower spring seat is in mutual abutting contact with a conical hole in the center of the back face of the valve clack 5 through.