CN216279690U

CN216279690U - Wear-resistant easy-to-rotate operating mechanism of sampling valve

Info

Publication number: CN216279690U
Application number: CN202122857743.9U
Authority: CN
Inventors: 林保义; 王博
Original assignee: Suzhou Getep Fluid Equipment Co ltd
Current assignee: Suzhou Getep Fluid Equipment Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-04-12
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a wear-resistant easy-to-rotate operating mechanism of a sampling valve, which comprises: the valve core assembly comprises a support sleeve, a hand wheel, a nut support plate and a valve core assembly, wherein the hand wheel is rotatably sleeved on the upper part of the support sleeve, and the nut support plate is fixedly arranged in the hand wheel and is positioned at the top of the support sleeve; the valve core assembly comprises a valve rod and a screw nut, the valve rod is movably inserted in the supporting sleeve, the screw nut is rotatably sleeved on the valve rod and fixedly connected with the nut supporting plate, a spring sleeved on the outer side of the valve rod is arranged in the supporting sleeve, and the spring always has downward elasticity on the valve rod. This wear-resistant easy gyration operating device of sample valve, convenient operation is swift, can realize that the hand wheel is automatic to be turned round so that the sample valve gets back to the encapsulated situation again to frictional force is little between each part, has better wearability.

Description

Wear-resistant easy-to-rotate operating mechanism of sampling valve

Technical Field

The utility model relates to the technical field of sampling valves, in particular to a wear-resistant easy-to-rotate operating mechanism of a sampling valve.

Background

The sampling valve is a valve capable of obtaining a medium sample in a pipeline, and an operator can obtain the medium sample through the sampling valve and perform chemical analysis according to the medium sample.

At present, the operating device that traditional sample valve generally adopted all needs to carry out manual gyration, needs the handle of manual reverse rotation sample valve promptly after the sample finishes to push the valve rod and seal the thief hole on the valve body. By adopting the structure, the operation is complex, and the operating personnel easily forget to close the valve or close the valve untimely in the sampling process, so that the medium leaks out, and particularly, the toxic and harmful medium can cause harm to the environment. Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the wear-resistant easy-rotation operating mechanism for the sampling valve, which is convenient and quick to operate, can realize automatic rotation to enable the sampling valve to return to a sealing state again, and has small friction force among all parts and better wear resistance.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a wear-resistant easy-to-turn operating mechanism for a sample valve, comprising: the valve core assembly comprises a support sleeve, a hand wheel, a nut support plate and a valve core assembly, wherein the hand wheel is rotatably sleeved on the upper part of the support sleeve, and the nut support plate is fixedly arranged in the hand wheel and is positioned at the top of the support sleeve; the valve core assembly comprises a valve rod and a screw nut, the valve rod is movably inserted in the supporting sleeve, the screw nut is rotatably sleeved on the valve rod and fixedly connected with the nut supporting plate, a spring sleeved on the outer side of the valve rod is arranged in the supporting sleeve, and the spring always has downward elasticity on the valve rod.

As a further improvement of the utility model, an annular groove is arranged at the top end of the support sleeve, a plurality of second balls are arranged in the annular groove, and at least part of the second balls protrude out of the annular groove and are abutted against the bottom surface of the nut support plate.

As a further improvement of the present invention, the hardness of each of the support sleeve and the nut support plate is greater than the hardness of the second ball.

As a further improvement of the utility model, a rotatable pressing ring is sleeved between the middle part of the periphery of the hand wheel and the supporting sleeve, an annular accommodating groove is formed between the pressing ring and the supporting sleeve as well as between the pressing ring and the hand wheel, and an O-shaped ring is arranged in the annular accommodating groove.

As a further improvement of the utility model, a plurality of third balls are arranged between the pressure ring and the hand wheel, and the hardness of the third balls is less than that of the pressure ring.

As a further improvement of the utility model, the inner wall of the hand wheel surrounding is provided with an arc-shaped groove, and the third ball is positioned in the arc-shaped groove and is abutted against two end faces of the compression ring which are vertical to each other.

As a further improvement of the present invention, a spring support plate and a spring support seat are installed in the cavity of the support sleeve, and two ends of the spring respectively elastically abut against the spring support plate and the spring support seat, so that the spring support plate is stopped upward at the upper part of the cavity of the support sleeve, and the spring support seat is pressed downward on the boss of the valve rod.

The utility model has the beneficial effects that:

1. the utility model provides a wear-resistant easy-rotation operating mechanism of a sampling valve, wherein a valve rod and a lead screw nut sleeved on the valve rod are installed in a supporting sleeve, the lead screw nut is fixedly connected with a hand wheel sleeved on the supporting sleeve through a nut supporting plate, a spring is sleeved on the valve rod, and the valve rod can drive the hand wheel to automatically rotate under the elastic action of the spring, so that the sampling valve returns to a sealing state again, the hand wheel does not need to be manually rotated, the operation is convenient and rapid, the risk of medium leakage caused by forgetting or untimely closing of the valve by operating personnel in the sampling process is effectively avoided, and the environment is prevented from being damaged;

2. the second ball and the third ball are respectively arranged among the hand wheel, the nut supporting plate and the supporting sleeve, so that the friction force among parts during rotation of the hand wheel can be reduced, further, a spring with a relatively small spring force value can be selected to meet the acting force required by rotation of the hand wheel, and the pressure loss of a sealing piece for sealing the sampling hole due to the large elastic force of the spring is avoided;

3. the supporting sleeve, the nut supporting plate and the pressing ring are made of materials with high hardness, so that the wear resistance is obviously improved, the second ball and the third ball are effectively prevented from generating indentation on the parts, the defects that related parts are fused and seized due to the fact that materials with similar hardness are selected in the prior art can be eliminated, the stability of valve opening and closing operation is improved, and the service life of the sampling valve is prolonged;

4. through installing O type circle between hand wheel and support sleeve, can improve the stability between hand wheel and the support sleeve, produce certain damping effect when making the hand wheel rotate, cushion the gyration of hand wheel, avoid appearing violent striking.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view of A in FIG. 2 according to the present invention.

The following description is made with reference to the accompanying drawings:

301-support sleeve; 3011-annular groove;

302-hand wheel; 3021-arc groove;

303-nut support plate; 308-spring;

309-second ball; 310-press ring;

311-circular receiving groove; 312-O-ring;

313 — third ball.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, the present invention provides a wear-resistant easy-to-rotate operating mechanism for a sampling valve, which is mounted on a valve body of the sampling valve, and is capable of opening or closing a sampling hole on the valve body when the operating mechanism is actuated.

Referring to fig. 2, the operating mechanism includes: support sleeve 301, hand wheel 302, nut support plate 303 and the case subassembly. The handwheel 302 is rotatably sleeved on the upper part of the support sleeve 301. A nut support plate 303 is fixedly mounted in the handwheel 302 in a threaded manner, and the nut support plate 303 is located at the top of the support sleeve 301. The support sleeve 301 has a cavity therein with an open top, and the valve core assembly is installed in the cavity.

The valve core assembly comprises a screw nut and a valve rod, the valve rod is coaxially inserted into the cavity of the supporting sleeve 301, the valve rod can move up and down in the cavity, and the screw nut is fixedly connected with the nut supporting plate 303 in a threaded mode. The screw nut is rotatably sleeved on the valve rod, a spiral raceway is arranged between the screw nut and the valve rod, and a plurality of first balls are arranged in the raceway. The lower part of the valve rod is inserted with a pin to limit the valve rod, and the valve rod is prevented from rotating along with the screw nut. The valve rod is sleeved with a spring 308, and the valve rod always has a downward movement trend under the action of the elastic force of the spring 308.

In this embodiment, the nut support plate 303 is fixedly connected between the handwheel 302 and the lead screw nut in a threaded manner, thereby forming an integral piece. During sampling, the hand wheel 302 is rotated in a designated direction to drive the screw nut to rotate synchronously, the valve rod is driven to move vertically and upwards under the matching action of the screw nut and the first ball, a sampling hole in the valve body is opened, and a medium flows out of a sampling bottle; after sampling, the hand wheel 302 is loosened, the valve rod moves downwards under the action of the elastic force of the spring 308, and meanwhile, the hand wheel 302 is driven to rotate through the lead screw nut, so that the sampling valve returns to a sealing state again. By this setting, convenient operation is swift, need not manual gyration hand wheel 302 again, can effectively avoid the operation personnel to forget or close the risk that the valve leads to the medium to leak in the in-process of sample in time, prevents to cause harm to the environment.

With reference to fig. 2, in order to satisfy the requirement of installing the spring 308, a spring supporting plate and a spring supporting seat are installed in the cavity of the supporting sleeve 301, and two ends of the spring 308 respectively elastically abut against the spring supporting plate and the spring supporting seat. The supporting sleeve 301 is provided with a snap spring along the inner wall at the position close to the top of the cavity, and the spring supporting plate is stopped upwards on the snap spring under the action of the elastic force of the spring 308. The valve rod is provided with a boss close to the lower end, and the spring support seat is sleeved on the valve rod and is downwards pressed and attached to the boss under the elastic force of the spring 308.

Referring to fig. 3, the top end of the supporting sleeve 301 extends outward along the outer side of the circumference to form an outer edge boss with a certain width, and an annular groove 3011 is formed along the top surface of the outer edge boss, a plurality of second balls 309 are disposed in the annular groove 3011, and at least a portion of the second balls 309 protrude from the annular groove 3011 and abut against the bottom surface of the nut supporting plate 303. A rotatable pressing ring 310 is sleeved between the middle part of the periphery of the hand wheel 302 and the supporting sleeve 301, and a plurality of third balls 313 are arranged between the pressing ring 310 and the hand wheel 302. Specifically, the handwheel 302 is provided with an arc-shaped groove 3021 around the inner wall in a circle, the third ball 313 is located in the arc-shaped groove 3021, the section of the pressing ring 310 is right-angled, and the third ball 313 abuts against two end faces of the pressing ring 310, which are perpendicular to each other. Through the second ball 309 and the third ball 313, the friction force between parts can be reduced when the hand wheel 302 rotates, and then the spring 308 with a relatively small spring force value can meet the acting force required by the rotation of the hand wheel 302, so that the pressure loss of the sealing element for sealing the sampling hole due to the large elastic force of the spring 308 is avoided.

In addition, the hardness of the support sleeve 301 and the nut support plate 303 is greater than the hardness of the second balls 309, and the hardness of the third balls 313 is less than the hardness of the pressing ring 310. In this embodiment, preferably, the second balls 309 and the third balls 313 are made of steel balls, the supporting sleeve 301, the nut supporting plate 303 and the pressing ring 310 are made of 2Cr13, and the hardness of the material is about HRC35 by heat treatment. Because under the lasting elasticity effect at spring 308, can make each spare part receive very big extrusion force, and this application supporting sleeve 301 and nut backup pad 303 and clamping ring 310 adopt the great material of hardness, make the wearability obtain showing and improving, effectively avoid second ball 309 and third ball 313 to produce the indentation to above-mentioned spare part, also can eliminate the tradition because choose for use the material that hardness is close to lead to relevant spare part to appear fusing, sting defect such as die, and then improved valve switch operation's stability, also improve the life of sample valve.

An annular accommodating groove 311 is formed between the top of the pressing ring 310 and the bottom of the outer edge boss of the supporting sleeve 301 and the inner wall of the hand wheel 302, an O-shaped ring 312 is installed in the annular accommodating groove 311, the O-shaped ring 312 can generate a certain damping effect on the rotation of the hand wheel 302, so that the hand wheel 302 is buffered when rotating under the elastic force action of the spring 308, severe impact is avoided, and the stability is further improved. Under the matching use of the hand wheel 302, the third ball 313, the pressing ring 310 and the O-shaped ring 312, the upward movement of the hand wheel 302 relative to the support sleeve 301 can be limited, and the downward movement of the hand wheel 302 relative to the support sleeve 301 is limited under the action of the nut support plate 303, so that the hand wheel 302 can only do circular movement relative to the support sleeve 301, and the valve rod can be driven to move up and down through the screw rod nut when the hand wheel is rotated.

Therefore, the sampling valve wear-resistant easy-rotation operating mechanism has the advantages that the valve rod and the lead screw nut sleeved on the valve rod are installed in the supporting sleeve, the lead screw nut is fixedly connected with the hand wheel sleeved on the supporting sleeve through the nut supporting plate, the spring is sleeved on the valve rod, the valve rod can drive the hand wheel to automatically rotate under the elastic action of the spring, the sampling valve returns to a sealing state again, the hand wheel does not need to be manually rotated, the operation is convenient and rapid, the risk that media leak out due to forgetting or untimely closing of the valve in the sampling process of an operator is effectively avoided, and the environment is prevented from being damaged; the second ball and the third ball are respectively arranged among the hand wheel, the nut supporting plate and the supporting sleeve, so that the friction force among parts during rotation of the hand wheel can be reduced, further, a spring with a relatively small spring force value can be selected to meet the acting force required by rotation of the hand wheel, and the pressure loss of a sealing piece for sealing the sampling hole due to the large elastic force of the spring is avoided; the supporting sleeve, the nut supporting plate and the pressing ring are made of materials with high hardness, so that the wear resistance is obviously improved, the second ball and the third ball are effectively prevented from generating indentation on the parts, the defects that related parts are fused and seized due to the fact that materials with similar hardness are selected in the prior art can be eliminated, the stability of valve opening and closing operation is improved, and the service life of the sampling valve is prolonged; through installing O type circle between hand wheel and support sleeve, can improve the stability between hand wheel and the support sleeve, produce certain damping effect when making the hand wheel rotate, cushion the gyration of hand wheel, avoid appearing violent striking.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the utility model, which can be embodied in many different forms than described herein, and therefore the utility model is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a wear-resisting easy gyration operating device of sample valve which characterized in that includes: the valve core assembly comprises a support sleeve (301), a hand wheel (302), a nut support plate (303) and a valve core assembly, wherein the hand wheel (302) is rotatably sleeved on the upper part of the support sleeve (301), and the nut support plate (303) is fixedly installed in the hand wheel (302) and is positioned at the top of the support sleeve (301); the valve core assembly comprises a valve rod and a screw nut, the valve rod is movably inserted in the supporting sleeve (301), the screw nut is rotatably sleeved on the valve rod and fixedly connected with the nut supporting plate (303), a spring (308) sleeved on the outer side of the valve rod is arranged in the supporting sleeve (301), and the spring (308) always has downward elasticity on the valve rod.

2. The wear-resistant easy-to-turn operating mechanism of a sampling valve of claim 1, wherein: an annular groove (3011) is formed in the top end of the supporting sleeve (301), a plurality of second balls (309) are arranged in the annular groove (3011), and at least part of the second balls (309) protrudes out of the annular groove (3011) and abuts against the bottom surface of the nut supporting plate (303).

3. The wear-resistant easy-to-turn operating mechanism of the sampling valve of claim 2, wherein: the hardness of the support sleeve (301) and the nut support plate (303) are both greater than the hardness of the second ball (309).

4. The wear-resistant easy-to-turn operating mechanism of a sampling valve of claim 1, wherein: hand wheel (302) along periphery middle part with the cover is equipped with a rotatable clamping ring (310) between support sleeve (301), and clamping ring (310) with support sleeve (301) and form annular accommodation groove (311) between hand wheel (302), install O type circle (312) in annular accommodation groove (311).

5. The wear resistant easy slewing operating mechanism of a sampling valve of claim 4, wherein: a plurality of third balls (313) are arranged between the pressing ring (310) and the hand wheel (302), and the hardness of the third balls (313) is smaller than that of the pressing ring (310).

6. The wear resistant easy slewing operating mechanism of a sampling valve of claim 5, wherein: the hand wheel (302) is provided with an arc-shaped groove (3021) around the inner wall, and the third ball (313) is positioned in the arc-shaped groove (3021) and abuts against two end faces of the pressing ring (310), which are perpendicular to each other.

7. The wear-resistant easy-to-turn operating mechanism of a sampling valve of claim 1, wherein: a spring support plate and a spring support seat are installed in the cavity of the support sleeve (301), and two ends of the spring (308) are elastically abutted to the spring support plate and the spring support seat respectively, so that the spring support plate is stopped upwards at the upper part of the cavity of the support sleeve (301), and the spring support seat is downwards pressed on the boss of the valve rod.