CN217572753U

CN217572753U - Small-bore valve frock of screwing

Info

Publication number: CN217572753U
Application number: CN202221283435.8U
Authority: CN
Inventors: 王锐
Original assignee: Youlixima Marine Equipment Chengdu Co ltd
Current assignee: Youlixima Marine Equipment Chengdu Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-10-14
Anticipated expiration: 2032-05-26

Abstract

The utility model relates to a frock of screwing of small-bore valve, including the frock fixing base, the valve, the rotary disk with compress tightly the subassembly, the valve setting is between frock fixing base and rotary disk, the valve sets up the helicla flute with the adjacent one end of rotary disk, locking valve body spiral installation is in the helicla flute, the rotary disk can be dismantled with the locking valve body and be connected, the rotary disk is provided with the through-hole of mutual intercommunication with the locking valve body middle part, compress tightly the subassembly including compressing tightly double-screw bolt and gland nut, the gland nut gomphosis is installed in the frock fixing base, compress tightly the double-screw bolt and run through-hole and valve and gland nut threaded connection, the locking valve body, the external screw thread that compresses tightly the double-screw bolt is unanimous with gland nut's internal thread pitch, be provided with the stop pin on the frock fixing base, the stop pin can be dismantled with the valve and be connected. After the tool is assembled, the tool is divided into a movable part and a static part, the rotating disc, the locking valve body and the pressing assembly are connected into a whole, the whole body moves downwards when the rotating disc is rotated, the locking valve body is screwed, and liquid is prevented from leaking from the joint of the valve and the locking valve.

Description

Small-bore valve frock of screwing

Technical Field

The utility model relates to the technical field of valves, especially, relate to a small-bore valve frock of screwing.

Background

The ball valve has obtained extensive application in trades such as petroleum, chemical industry, metallurgy and city central heating, during the use, in order to improve the leakproofness of ball valve port, need install small-bore forged steel butt clamp valve additional at the ball valve port, like in figure 1 left valve body need closely link to each other with the valve body, uses special spanner usually, with the help of two pinhole on the left valve body, then moves tightly. To the locking valve body of small-bore forged steel butt clamp valve move tightly, current spanner operation, the major disadvantage: 1. in the valve assembled by the existing wrench, the joint part of the valve leaks and the screwing force is insufficient in the pressure test of the valve; 2. in the process of moving the valve tightly by using the existing wrench, because the direction vertical to the wrench (and the valve) is not limited, the force is slightly large, the wrench can give way in the vertical direction and slip, and the wrench can damage the sealing surface (and the flange water line) of the valve; 3. the existing wrench is not enough in strength, so that the left valve body which is moved tightly cannot pass a shell pressure test of a higher pound level.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a tightening tool for an aperture valve, which aims at the problems that the existing locking valve body and the valve are not tightened and liquid leaks at a joint part.

The utility model provides a small-bore valve frock of screwing, includes the frock fixing base, the valve, and rotary disk and hold-down assembly, the valve sets up between frock fixing base and the rotary disk, the valve with the adjacent one end of rotary disk sets up the helicla flute, and the spiral of lock valve body is installed in the helicla flute, the rotary disk with the connection can be dismantled to the lock valve body, the rotary disk is provided with the through-hole of mutual intercommunication with the lock valve body middle part, and hold-down assembly includes gland stud and gland nut, the gland nut gomphosis is installed in the frock fixing base, the gland stud runs through-hole and valve with gland nut threaded connection, the lock valve body the external screw thread of gland stud is unanimous with gland nut's internal thread pitch, be provided with the stop pin on the frock fixing base, the stop pin with the connection can be dismantled to the valve.

Preferably, a plastic gasket is arranged on one side face, attached to the valve, of the tool fixing seat.

Preferably, a driving pin is arranged on the rotating disc and detachably connected with the locking valve body.

Preferably, an annular groove is formed in the bottom of the spiral groove.

Preferably, the valve port is further provided with a steel sleeve, and the steel sleeve is abutted against the inner side wall of the locking valve body.

The utility model discloses an useful part lies in: 1. after the tool is assembled, the tool is divided into a movable part and a static part, the rotating disc, the locking valve body and the pressing assembly are connected into a whole, the rotating disc is rotated by using tools such as a wrench and the like, so that the whole body moves downwards, the locking valve body is screwed, and liquid is prevented from leaking from the joint of the valve and the locking valve; 2. the thread pitches of the external threads of the locking valve body and the compression stud and the internal threads of the compression nut are consistent, the external threads and the internal threads are always kept as a whole in the rotating process, and the external threads and the internal threads cannot give way or become loose in the vertical direction (the axis of a valve flow channel), so that the sealing surface and the flange water line of the valve are prevented from being damaged.

Drawings

Fig. 1 is a schematic perspective view of an aperture valve tightening tool according to an embodiment of the invention;

FIG. 2 is an exploded view of a bore valve tightening tool;

fig. 3 is a schematic cross-sectional view of an aperture valve screwing tool.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, the small-bore valve screwing tool comprises a tool fixing seat 1, a valve 2, a rotating disc 3 and a pressing assembly 4, wherein the valve 2 is arranged between the tool fixing seat 1 and the rotating disc 3, one end of the valve 2, which is adjacent to the rotating disc 3, is provided with a spiral groove 21, the locking valve body 22 is spirally installed in the spiral groove 21, the rotating disc 3 is detachably connected with the locking valve body 22, through holes 31 which are mutually communicated are formed in the middle parts of the rotating disc 3 and the locking valve body 22, the pressing assembly 4 comprises a pressing stud 41 and a pressing nut 42, the pressing nut 42 is embedded and installed in the tool fixing seat 1, the pressing stud 41 penetrates through the through holes 31 and the valve 2 to be in threaded connection with the pressing nut 42, external threads of the locking valve body 22 and the pressing stud 41 are consistent with thread pitches of internal threads of the pressing nut 42, a stop pin 11 is arranged on the tool fixing seat 1, and the stop pin 11 is detachably connected with the valve 2. Specifically, in this embodiment, the valve 2 is a ball valve, and before the valve 2 is installed in the tool, an operator rotates a handle on the valve 2, so that the ball valve 2 is in an open state, and the compressing assembly 4 can penetrate through the valve 2 conveniently. At this moment, the rotating disc 3 is manually screwed into the spiral groove 21 of the valve 2, the double offset ring spanner is used for moving the rotating disc 3 to integrally rotate and move downwards, the compression nut 42 is clamped in the tool fixing seat 1, the tool fixing seat 1 is connected with the valve 2 body through the stop pin 11, the tool fixing seat is three-in-one, the rotating disc 3 is moved to drive the locking valve body 22 to rotate in the spiral groove 21, the locking is screwed, and liquid is prevented from leaking out from a gap between the valve 2 and the locking valve body 22. Furthermore, the thread pitches of the external threads of the locking valve body 22 and the pressing stud 41 are designed to be consistent with those of the internal threads of the pressing nut 42, when the rotating disc 3 moves downwards, the external threads and the internal threads are always kept as a whole in the rotating process, and the external threads and the internal threads cannot be withdrawn or loosened in the vertical direction (and the axis of a valve flow channel), so that flange water lines on the sealing surface of the valve 2 are protected.

As shown in fig. 2 to 3, a plastic gasket 12 is arranged on one side surface of the tool fixing seat 1, which is attached to the valve 2, so as to isolate the end surface between the tool fixing seat 1 and the valve 2 and prevent the sealing surface of the valve 2 from being damaged.

As shown in fig. 2 to 3, the rotating disc 3 is provided with a driving pin 32, the driving pin 32 is detachably connected with the locking valve body 22, so that the tool is convenient to disassemble and assemble, and the tool is suitable for valves of various models, so that the tool is wide in applicability.

As shown in fig. 2 to 3, an annular groove 211 is formed in the bottom of the spiral groove 21, a seal ring is additionally installed in the groove 211, the seal ring is pressed by the lock valve body 22 in the rotating and downward moving process, and the seal ring is in interference fit with the lock valve body 22, so that the sealing performance between the lock valve body 22 and the valve 2 is improved.

As shown in fig. 2 to 3, a steel sleeve 23 is further arranged at the port of the valve 2, the steel sleeve 23 abuts against the inner side wall of the lock valve body 22, because the valve 2 is in a ball valve shape, in order to avoid that the lock valve body 22 is not tightly attached to the ball valve spherical surface in the valve 2, the steel sleeve 23 is arranged to attach to the ball valve spherical surface rotating in the valve 2, and the sealing performance between the lock valve body 22 and the valve 2 is improved.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a frock of screwing of small-bore valve which characterized in that: including the frock fixing base, the valve, the rotary disk with compress tightly the subassembly, the valve sets up between frock fixing base and the rotary disk, the valve with the adjacent one end of rotary disk sets up the helicla flute, and the locking valve body spiral shell is installed in the helicla flute, the rotary disk with the connection can be dismantled to the locking valve body, the rotary disk is provided with the through-hole of mutual intercommunication with the locking valve body middle part, compresses tightly the subassembly and includes gland stud and gland nut, the gland nut gomphosis is installed in the frock fixing base, the gland stud runs through-hole and valve with gland nut threaded connection, the locking valve body the external screw thread that compresses tightly the stud is unanimous with gland nut's internal thread pitch, be provided with the stop pin on the frock fixing base, the stop pin with the connection can be dismantled to the valve.

2. The small-bore valve screwing tool of claim 1, wherein: the tool fixing seat and one side face of the valve fitting are provided with plastic gaskets.

3. The small-bore valve screwing tool of claim 2, wherein: and the rotating disc is provided with a driving pin, and the driving pin is detachably connected with the locking valve body.

4. The small-bore valve screwing tool of claim 3, wherein: and an annular groove is formed at the bottom of the spiral groove.

5. The small-bore valve screwing tool of claim 4, wherein: the valve port is also provided with a steel sleeve, and the steel sleeve is abutted against the inner side wall of the locking valve body.