CN217927433U

CN217927433U - Split type valve rod nut

Info

Publication number: CN217927433U
Application number: CN202221496837.6U
Authority: CN
Inventors: 李志龙
Original assignee: Taizhou Wanxin Pump Valve Accessories Co ltd
Current assignee: Taizhou Wanxin Pump Valve Accessories Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-11-29
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a split type valve-stem nut, which comprises a valve body, the top surface of valve body run through in the mounting hole of the inside intercommunication of valve body, threaded connection nut in the mounting hole, the central threaded connection of nut extends to the valve rod in the valve body, the top surface of valve body set up with the endocentric draw-in groove of mounting hole, the draw-in groove is regular hexagon, be equipped with in the draw-in groove with the clamping ring that the draw-in groove agrees with, the clamping ring with the top surface laminating of nut and through the bolt with the top surface of nut is fixed, through set up regular hexagon's draw-in groove on the valve body, set up the clamping ring rather than inside agreeing with in the draw-in groove to carry out fixed connection with the clamping ring and nut through the bolt, played spacing effect to the motion of the circumferencial direction of nut, avoided the too big screw thread that leads to nut and valve body junction to appear slipping through the strength of turning round the valve rod to lead to the nut rotation under the drive of valve rod, influence the normal opening and closing of valve body.

Description

Split type valve rod nut

Technical Field

The utility model relates to a valve-stem nut field especially relates to a split type valve-stem nut.

Background

The valve rod is an important part of the valve and is used for transmission, an actuating mechanism or a handle is connected to the valve rod, the valve core is directly driven to move or rotate below the actuating mechanism or the handle so as to achieve the valve opening and closing or adjusting effect, the valve rod nut is composed of a nut cap and a nut rod and has certain strength and compressive resistance, because the valve rod nut is in the process of valve operation, the force of the valve rod shaft is directly applied to the valve rod nut, the valve rod nut and the valve rod rotate along with threads, the friction coefficient of the valve rod nut is small, and therefore the phenomenon of seizure or rusting can be avoided.

However, because the valve rod nut is connected to the valve body through the threads, and the valve rod is connected with the valve rod nut through the internal threads at the center of the valve rod nut, when the force for rotating the valve rod is too large, the threads at the joint of the nut and the valve body are easy to slip, so that the nut rotates along with the valve rod, and the normal opening and closing of the valve body are influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a split type valve-stem nut, through the draw-in groove that sets up regular hexagon on the valve body, set up the clamping ring rather than inside agreeing with in the draw-in groove, and carry out fixed connection with clamping ring and nut through the bolt, spacing effect has been played to the motion of the circumferencial direction of nut, avoid the too big screw that leads to nut and valve body junction to appear the smooth silk through the strength of turning round the valve rod, thereby lead to the nut rotation under the drive of valve rod, influence the normal opening and closing of valve body.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a split type valve-stem nut, includes the valve body, the top surface of valve body run through in the mounting hole of the inside intercommunication of valve body, threaded connection nut in the mounting hole, the central threaded connection of nut extends to the valve rod in the valve body, the top surface of valve body set up with the endocentric draw-in groove of mounting hole, the draw-in groove is regular hexagon, be equipped with in the draw-in groove with the clamping ring that the draw-in groove agrees with, the clamping ring with the top surface laminating of nut and through the bolt with the top surface of nut is fixed.

Preferably, the pressing ring abuts against the nut.

Preferably, the clamping ring is sleeved on the outer edge of the valve rod, and the diameter of the through hole in the center of the clamping ring is larger than that of the valve rod.

Preferably, the top surface of clamping ring runs through two radially symmetrical counter bores, cup joint in the counter bore the bolt, the end of bolt with the top surface threaded connection of nut, the top surface of nut seted up with the endocentric thread groove of counter bore, the end of bolt extends to in the thread groove.

Preferably, the bottom surface of the pressing ring is provided with a positioning groove concentric with the counter bore, the top surface of the nut is provided with a groove concentric with the thread groove, and the spring is positioned between the positioning groove and the groove.

Preferably, the bolt passes through the center of the spring.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

1. the regular-hexagon clamping groove is formed in the valve body, the clamping ring which is matched with the interior of the clamping groove is arranged in the clamping groove, and the clamping ring is fixedly connected with the nut through the bolt, so that the effect of limiting the movement of the nut in the circumferential direction is achieved, and the phenomenon that the screw thread at the joint of the nut and the valve body slides due to the fact that the force for twisting the valve rod is too large, and the nut rotates under the driving of the valve rod to influence the normal opening and closing of the valve body is avoided;

2. when the top surface of pressing ring and nut is laminated fixedly through the bolt, the spring that is arranged in recess and constant head tank is in compression state, and when the bolt loosened, the spring that is in compression state resets, and is ejecting from the draw-in groove with the pressing ring, is convenient for take out the pressing ring from the draw-in groove.

Drawings

FIG. 1 is a main sectional view of the overall structure of the present invention;

FIG. 2 is a top view of the overall structure of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 1A according to the present invention;

FIG. 4 is the overall structure diagram of the pressure ring of the present invention;

fig. 5 is an overall structure diagram of the nut of the utility model;

wherein: 1. a valve body; 2. a valve stem; 3. a nut; 4. pressing a ring; 5. a countersunk hole; 6. a bolt; 7. a groove; 8. a thread groove; 9. a spring; 10. positioning a groove; 101. mounting holes; 102. a clamping groove.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-5, the utility model provides a split type valve rod nut, including valve body 1, the top surface of valve body 1 runs through in the inside mounting hole 101 that communicates of valve body 1, mounting hole 101 female connection nut 3, the central threaded connection of nut 3 extends to the interior valve rod 2 of valve body 1, the top surface of valve body 1 sets up the draw-in groove 102 concentric with mounting hole 101, draw-in groove 102 is regular hexagon, be equipped with the clamping ring 4 that agrees with draw-in groove 102 in the draw-in groove 102, clamping ring 4 cup joints the outer fringe of valve rod 2, and the through-hole diameter at the centre of clamping ring 4 is greater than the diameter of valve rod 2, clamping ring 4 laminates with the top surface of nut 3, and fixed with the top surface of nut 3 through bolt 6, the top surface of clamping ring 4 runs through two radial symmetry's counter sink 5, cup joint bolt 6 in the counter sink 5, the end of bolt 6 and the top surface threaded connection of nut 3, the top surface of nut 3 sets up the thread groove 8 concentric with counter sink 5, the end of bolt 6 extends to in the thread groove 8;

through the draw-in groove 102 that sets up regular hexagon on valve body 1, set up the clamping ring 4 rather than inside agreeing with in draw-in groove 102, and carry out fixed connection through bolt 6 with clamping ring 4 and nut 3, spacing effect has been played to the motion of the circumferencial direction of nut 3, avoid the too big screw that leads to nut 3 and 1 junction of valve body to appear slipping through the power of turning round valve rod 2, thereby lead to nut 3 rotation under the drive of valve rod 2, influence the normal opening and closing of valve body 1.

As shown in fig. 1 and 3, the utility model also discloses that a spring 9 is abutted between the compression ring 4 and the nut 3, a positioning groove 10 concentric with the counter sink 5 is arranged on the bottom surface of the compression ring 4, a groove 7 concentric with the thread groove 8 is arranged on the top surface of the nut 3, the spring 9 is positioned between the positioning groove 10 and the groove 7, and the bolt 6 passes through the center of the spring 9;

when the top surfaces of the pressing ring 4 and the nut 3 are fixedly attached through the bolt 6, the spring 9 located in the groove 7 and the positioning groove 10 is in a compression state, when the bolt 6 is loosened, the spring 9 in the compression state resets, the pressing ring 4 is ejected out of the clamping groove 102, and the pressing ring 4 is convenient to take out of the clamping groove 102.

The working principle is as follows: through the draw-in groove 102 that sets up regular hexagon on valve body 1, set up the clamping ring 4 rather than inside agreeing with in draw-in groove 102, and carry out fixed connection with clamping ring 4 and nut 3 through bolt 6, the motion to the circumferencial direction of nut 3 has played spacing effect, avoid the too big screw thread that leads to nut 3 and the 1 junction of valve body to appear slipping through the strength of turning round valve rod 2, thereby lead to nut 3 rotation under the drive of valve rod 2, influence the normal opening and closing of valve body 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a split type valve-stem nut, includes valve body (1), the top surface of valve body (1) run through in mounting hole (101) of the inside intercommunication of valve body (1), mounting hole (101) female connection nut (3), the central threaded connection of nut (3) extends to valve rod (2) in valve body (1), its characterized in that: the top surface of the valve body (1) is provided with a clamping groove (102) concentric with the mounting hole (101), the clamping groove (102) is a regular hexagon, a pressing ring (4) matched with the clamping groove (102) is arranged in the clamping groove (102), and the pressing ring (4) is attached to the top surface of the nut (3) and fixed to the top surface of the nut (3) through a bolt (6).

2. The split stem nut of claim 1, wherein: the pressing ring (4) is connected with the nut (3) in an abutting mode through a spring (9).

3. The split stem nut of claim 1, wherein: the pressing ring (4) is sleeved on the outer edge of the valve rod (2), and the diameter of the through hole in the center of the pressing ring (4) is larger than that of the valve rod (2).

4. The split stem nut of claim 1, wherein: the top surface of clamping ring (4) runs through counter sink (5) of two radial symmetries, cup joint in counter sink (5) bolt (6), the end of bolt (6) with the top surface threaded connection of nut (3), the top surface of nut (3) set up with concentric thread groove (8) in counter sink (5), the end of bolt (6) extends to in thread groove (8).

5. The split stem nut of claim 2, wherein: the bottom surface of the pressing ring (4) is provided with a positioning groove (10) concentric with the counter sink (5), the top surface of the nut (3) is provided with a groove (7) concentric with the thread groove (8), and the spring (9) is located between the positioning groove (10) and the groove (7).

6. The split stem nut of claim 1, wherein: the bolt (6) passes through the center of the spring (9).