CN105299306A - Combined adjusting hand wheel device - Google Patents

Abstract

The invention discloses a combined adjusting handwheel device. The adjusting handwheel device includes an adjusting handwheel fixing seat and an adjusting handwheel knob. The adjusting handwheel fixing seat is a ring-shaped structure with a through hole in the middle. The inner wall of the handwheel fixing seat is provided with the first right-handed internal thread, the positioning step and the second right-handed internal thread in sequence from bottom to top, and the outer wall of the valve cover is provided with the first right-handed external thread. The cover is connected through the cooperation of the first right-handed internal thread and the first right-handed external thread; the adjustment handwheel knob is an inverted cup structure, and the bottom of the outer wall of the adjustment handwheel knob is provided with a second right-handed external thread. The handwheel fixing seat and the adjusting handwheel knob are connected through the cooperation of the second right-handed internal thread and the second right-handed external thread, and the inner top surface of the adjusting handwheel knob is also provided with a protrusion, which is against the top of the valve stem. The invention can prevent the adjustment handwheel knob from being unable to be opened due to being pressed too tightly or falling off due to excessive rotation.

Description

A Combined Adjusting Hand Wheel Device

technical field

The invention relates to the field of cut-off valve adjustment handwheels, and more particularly relates to a combined adjustment handwheel device.

Background technique

The handwheels used on globe valves currently on the market are generally traditional single-segment threaded one-way rotation. Due to the single-segment right-handed thread, if the force is too large when opening or closing, the handwheel may be pressed too tightly. It cannot be opened or it is over-rotated and falls off when it is opened, which cannot fully meet the needs of various locking devices on the market for safe and practical handwheels.

Contents of the invention

In order to overcome the defects in the prior art that the hand wheel is pressed too tightly and cannot be opened or is over-rotated and falls off when opened, the present invention provides a combined adjusting hand wheel device that prevents the hand wheel from being pressed too tightly and falling off.

In order to solve the problems of the technologies described above, the technical solution of the present invention is as follows:

A combined adjustment handwheel device, the adjustment handwheel device is applied to a stop valve, the stop valve includes a valve body, a valve cover, a valve stem, a valve disc and a spring, and the bottom of the inner cavity of the valve body is provided with a feed There is a discharge port on the side of the inner cavity of the valve body. The valve cover is arranged on the top of the valve body and is sealed with the valve body. A vertical shaft hole is provided in the center of the valve cover, and the valve stem passes through the shaft. hole, the disc is set at the bottom of the valve stem, and a spring baffle is provided on the top side of the valve stem, and the spring is sleeved on the valve stem and set between the spring baffle and the valve cover. The handwheel fixing seat and the adjusting handwheel knob, the adjusting handwheel fixing seat is an annular structure with a through hole in the middle, and the inner wall of the adjusting handwheel fixing seat is provided with the first right-handed internal thread from bottom to top, The positioning step and the second right-handed internal thread, the outer wall of the valve cover is provided with the first right-handed external thread, and the adjusting handwheel fixing seat and the valve cover are connected through the cooperation of the first right-handed internal thread and the first right-handed external thread; The adjustment handwheel knob is an inverted cup structure, the bottom of the outer wall of the adjustment handwheel knob is provided with a second right-handed external thread, the adjustment handwheel fixing seat and the adjustment handwheel knob pass through the second right-handed internal thread and the second right-hand The external thread is fitted to connect, and the inner top surface of the adjustment handwheel knob is also provided with a protrusion, and the protrusion is against the top of the valve stem.

In a preferred solution, the outer wall of the adjusting handwheel fixing seat is provided with a plurality of pits which are convenient for picking by hand. It is convenient to manually rotate and adjust the handwheel fixing seat.

In a preferred solution, a ring of ribs for anti-slip is provided on the outer wall of the fixing seat of the adjusting handwheel.

In a preferred solution, the protrusion is an inverted conical structure, the bottom of which abuts against the top of the valve stem.

In a preferred solution, the outer diameter of the adjustment handwheel knob decreases sequentially from top to bottom.

The combined adjustment handwheel device provided by the present invention, when installing, pass the adjustment handwheel knob through the through hole of the adjustment handwheel fixing seat from bottom to top, and rotate the adjustment handwheel knob counterclockwise to make the second right-handed external thread and The second right-handed internal thread is matched for connection; the adjusting handwheel fixing seat is rotated clockwise relative to the valve cover, so that the first right-handed internal thread and the first right-handed external thread are matched for connection.

When closing the globe valve, turn the adjusting handwheel knob clockwise. Under the cooperation of the second right-handed external thread and the second right-handed internal thread, the adjusting handwheel knob moves down, and the protrusion of the adjusting handwheel knob presses down on the valve stem, and the spring Compression, the disc set at the bottom of the valve stem blocks the feed port and closes the shut-off valve.

When opening the shut-off valve, turn the adjusting handwheel knob counterclockwise. Under the cooperation of the second right-handed external thread and the second right-handed internal thread, the adjusting handwheel knob moves upward, and the protrusion of the adjusting handwheel knob moves upward at the same time, and the spring rebounds. Drive the valve stem to move up, and the disc set at the bottom of the valve stem will open the feed port and open the shut-off valve.

Compared with the prior art, the beneficial effects of the technical solution of the present invention are: the present invention provides a combined adjusting handwheel device, which has a novel structure and is convenient to adjust. At the positioning step, due to the blockage of the bonnet, the adjustment handwheel knob cannot continue to rotate, so as to avoid the adjustment handwheel knob being too tight to open; when the adjustment handwheel knob rotates counterclockwise, the stop valve opens. Turn the adjustment handwheel knob clockwise. When the second right-handed external thread moves to the end of the second right-handed internal thread, when you continue to turn the adjustment handwheel knob counterclockwise, the adjustment handwheel knob will no longer move up, avoiding the adjustment of the handwheel. The knob came off from over-rotating.

Description of drawings

Fig. 1 is a schematic diagram of the combined adjusting hand wheel device of the present invention.

Fig. 2 is a cross-sectional view of the combined adjusting hand wheel device of the present invention.

Fig. 3 is a detailed sectional view of the combined adjusting hand wheel device of the present invention.

Fig. 4 is a schematic diagram of adjusting the handwheel fixing seat.

Fig. 5 is a schematic diagram of adjusting the handwheel knob.

Wherein 1, valve body; 2, bonnet; 3, valve stem; 4, disc; 5, spring; 6, adjusting hand wheel fixing seat; 7, adjusting hand wheel knob; 201, the first right-handed external thread; 301 , spring baffle; 601, first right-handed internal thread; 602, positioning step; 603, second right-handed internal thread; 604, pit; 605, rib; 701, second right-handed external thread; 702, protrusion .

detailed description

The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;

In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example 1

As shown in Figure 1-3, a combined adjustment handwheel device, the adjustment handwheel device is applied to the stop valve, the stop valve includes a valve body 1, a valve cover 2, a valve stem 3, a valve disc 4 and Spring 5, the bottom of the inner cavity of the valve body 1 is provided with a feed port, the side of the inner cavity of the valve body is provided with a discharge port, the valve cover 2 is arranged on the top of the valve body 1 and is sealed with the valve body 1, the valve cover 2 The center is provided with a vertical shaft hole, the valve stem 3 passes through the shaft hole, the valve disc 4 is arranged at the bottom of the valve stem 3, a spring baffle 301 is provided on the top side of the valve stem 3, and the spring 5 sets On the valve stem 3 and arranged between the spring baffle 301 and the valve cover 2;

The adjusting handwheel device includes an adjusting handwheel fixing seat 6 and an adjusting handwheel knob 7. The adjusting handwheel fixing seat 6 is a ring-shaped structure with a through hole in the middle. The first right-handed internal thread 601, the positioning step 602 and the second right-handed internal thread 603 are provided in turn on the top, the outer wall of the valve cover 2 is provided with the first right-handed external thread 201, and the adjustment handwheel fixing seat 6 and the valve cover 2 The connection is carried out by cooperating with the first right-handed internal thread 601 and the first right-handed external thread 201;

The adjustment handwheel knob 7 is an inverted cup structure, and the bottom of the outer wall of the adjustment handwheel knob 7 is provided with a second right-handed external thread 701, and the adjustment handwheel fixing seat 6 and the adjustment handwheel knob 7 pass through the second right-hand rotation. The internal thread 603 is connected with the second right-handed external thread 701 , and a protrusion 702 is provided on the inner top surface of the adjustment handwheel knob 7 , and the protrusion 702 abuts against the top of the valve stem 3 .

As shown in FIG. 4 , in the specific implementation process, the outer wall of the adjusting handwheel fixing seat 6 is provided with a plurality of pits 604 which are convenient for hand digging, so as to facilitate the manual rotation and adjustment of the handwheel fixing seat 6 . The outer wall of the adjusting handwheel fixing seat 6 is also provided with a circle of 605 ribs for anti-skid.

As shown in FIG. 5 , during the specific implementation process, the outer diameter of the adjusting handwheel knob 7 decreases sequentially from top to bottom. The protrusion 702 is an inverted cone structure, and its bottom is against the top of the valve stem 3 .

The combined adjustment handwheel device provided by the present invention, when installing, pass the adjustment handwheel knob 7 from bottom to top through the through hole of the adjustment handwheel fixing seat 6, and rotate the adjustment handwheel knob 7 counterclockwise to make the second clockwise rotation The external thread 701 cooperates with the second right-handed internal thread 603 for connection; the adjusting handwheel fixing seat 6 is rotated clockwise relative to the valve cover 2 to make the first right-handed internal thread 601 and the first right-handed external thread 201 cooperate for connection.

When closing the shut-off valve, turn the adjustment handwheel knob 7 clockwise. Under the cooperation of the second right-handed external thread 701 and the second right-handed internal thread 603, the adjustment handwheel knob 7 moves down, and the protrusion 702 of the adjustment handwheel knob 7 Press down the valve stem 3, the spring 5 is compressed, and the valve clack 4 arranged at the bottom of the valve stem 3 blocks the feed port to close the shut-off valve.

When opening the shut-off valve, turn the adjustment handwheel knob 7 counterclockwise. With the cooperation of the second right-handed external thread 701 and the second right-handed internal thread 603, the adjustment handwheel knob 7 moves upward, and the protrusion 702 of the adjustment handwheel knob 7 is simultaneously Moving up, the rebound of the spring 5 drives the valve rod 3 to move up, and the valve clack 4 arranged at the bottom of the valve rod 3 opens the feed port to open the shut-off valve.

The invention provides a combined adjusting hand wheel device, which has a novel structure and is convenient for adjustment. When the adjusting hand wheel knob 7 rotates clockwise to the bottom, the shut-off valve is closed. The handwheel knob 7 cannot continue to rotate, so as to avoid the adjustment handwheel knob 7 being too tight to open; when the adjustment handwheel knob 7 rotates counterclockwise, the shut-off valve opens. When the second right-handed external thread 701 moves to the end of the second right-handed internal thread 603, when the adjustment handwheel knob 7 continues to be turned counterclockwise, the adjustment handwheel knob 7 will no longer move up, avoiding the excessive rotation of the adjustment handwheel knob 7. And fall off.

The same or similar reference numerals correspond to the same or similar components;

The terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be interpreted as limitations on this patent;

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (5)

1. A combined adjustment handwheel device, the adjustment handwheel device is applied to the stop valve, the stop valve includes a valve body, valve cover, valve stem, disc and spring, the inner cavity bottom of the valve body is provided with The feed port, the side of the inner cavity of the valve body is provided with a discharge port, the valve cover is arranged on the top of the valve body and is sealed with the valve body, the center of the valve cover is provided with a vertical shaft hole, and the valve stem passes through the The shaft hole, the valve disc is arranged at the bottom of the valve stem, and the top side of the valve stem is provided with a spring baffle, and the spring is sleeved on the valve stem and arranged between the spring baffle and the valve cover. It is characterized in that the The adjusting handwheel device includes an adjusting handwheel fixing seat and an adjusting handwheel knob. The adjusting handwheel fixing seat is a ring-shaped structure with a through hole in the middle, and the inner wall of the adjusting handwheel fixing seat is provided with the first A right-handed internal thread, a positioning step and a second right-handed internal thread. The outer wall of the valve cover is provided with a first right-handed external thread. The thread fits for connection; the adjustment handwheel knob is an inverted cup structure, the bottom of the outer wall of the adjustment handwheel knob is provided with a second right-handed external thread, and the adjustment handwheel fixing seat and the adjustment handwheel knob pass through the second right-handed The inner thread and the second right-handed outer thread cooperate to connect, and the inner top surface of the adjustment handwheel knob is also provided with a protrusion, and the protrusion is against the top of the valve stem. 2. The combined adjusting handwheel device according to claim 1, characterized in that, the outer wall of the adjusting handwheel fixing seat is provided with a plurality of pits which are convenient for digging by hand. 3. The combined adjusting handwheel device according to claim 1, characterized in that, the outer wall of the adjusting handwheel fixing seat is provided with a circle of ribs for anti-skid. 4 . The combined adjusting hand wheel device according to claim 1 , wherein the protrusion is an inverted conical structure, the bottom of which is in contact with the top of the valve stem. 5. The combined adjusting handwheel device according to claim 1, characterized in that, the outer diameter of the adjusting handwheel knob decreases sequentially from top to bottom.