CN213039552U

CN213039552U - Novel plunger type throttle valve

Info

Publication number: CN213039552U
Application number: CN202021839398.5U
Authority: CN
Inventors: 张汉国; 邬雪平
Original assignee: Talon Machinery Suzhou Co ltd
Current assignee: Talon Machinery Suzhou Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-23
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a novel plunger type choke valve, including throttle valve body, throttle valve body's one end movable mounting has the blind flange, the outside movable mounting of blind flange has the installation screw, the blind flange one end fixed mounting who keeps away from throttle valve body has the pressure release mouth, the one end fixed mounting that the blind flange is close to throttle valve body has the protection retaining ring, throttle valve body's upper end movable mounting has adjusting hand wheel, adjusting hand wheel's lower extreme movable mounting has the scale indicator, the internal movable mounting of throttle valve has throttle valve rod, throttle valve rod's lower extreme movable mounting has throttle valve core, throttle valve body's upper end fixed mounting has throttle valve body, throttle valve body's one end fixed mounting has the inlet, throttle valve body's other end fixed mounting has the mouth that sweeps. The novel plunger type throttle valve is simple in structure, convenient for field maintenance, capable of buffering impact of inlet fluid on a throttle piece and better in use.

Description

Novel plunger type throttle valve

Technical Field

The utility model relates to a choke valve technical field specifically is a novel plunger type choke valve.

Background

The throttle valve is a valve for controlling the flow of fluid by changing the throttle section or the throttle length, and the throttle valve and the one-way valve are connected in parallel to form a one-way throttle valve which is a simple flow control valve, in the constant displacement pump hydraulic system, a throttle valve and an overflow valve are matched to form three throttling speed regulation systems, namely an oil inlet path throttling speed regulating system, an oil return path throttling speed regulating system and a bypass throttling speed regulating system, the throttling valve has no flow negative feedback function, can not compensate the speed instability caused by load change, is generally only used for occasions with small load change or low requirement on speed stability, the flow of the throttle valve is not only dependent on the area of the throttle orifice, but also related to the pressure difference between the front and the rear of the throttle orifice, and the rigidity of the valve is small, so the throttle valve is only suitable for occasions with small load change of an actuating element and low speed stability requirement.

However, when the common throttle valve on the existing market is used, certain use defects exist, when the common needle type throttle valve is used, high-frequency vibration easily occurs, the needle head falls off and is broken, and when the orifice plate type throttle valve is used, although the vibration is small, the aperture of the throttle valve is too small, the throttling efficiency is not high, the operation torque is large, workers are unwilling to operate, the common throttle valve vibrates when being used, the vibration cannot be completely avoided, due to the existence of the vibration, the throttle valve can be quickly failed basically, the worst condition is that the throttle valve can be damaged by washing within several hours, and the whole difficulty in use is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel plunger type choke valve to it all has the vibration to propose common choke valve in the existing market in the above-mentioned background art of solution, can't avoid the vibration completely, because the existence of vibration, can all lead to the choke valve inefficacy fast basically, and the worst condition is, and the choke valve will be broken by the dashing within a few hours, has increased the problem of using the whole degree of difficulty.

In order to achieve the above object, the utility model provides a following technical scheme: a novel plunger type throttle valve comprises a throttle valve body, wherein a blind flange is movably arranged at one end of the throttle valve body, the outer side of the blind flange is movably provided with a mounting screw, one end of the blind flange far away from the throttle valve body is fixedly provided with a pressure relief opening, a protective retainer ring is fixedly arranged at one end of the blind flange close to the throttle valve body, an adjusting hand wheel is movably arranged at the upper end of the throttle valve body, the lower end of the adjusting hand wheel is movably provided with a scale indicator, a throttle valve rod is movably arranged in the throttle valve body, the lower end of the throttle valve rod is movably provided with a throttle valve core, the upper end of the throttle valve body is fixedly provided with a throttle valve body, the one end fixed mounting of throttle valve body has the inlet, the other end fixed mounting of throttle valve body has the mouth of sweeping, it has buffer cavity to sweep between mouth and the inlet fixed mounting.

Preferably, the throttle valve body is designed to be a cylindrical structure, the size of the throttle valve body is matched with that of the blind flange, at least two groups of mounting screws are symmetrically arranged on the blind flange, and the position of a pressure relief opening on the blind flange corresponds to the position of a purging opening.

Preferably, a liquid outlet is fixedly mounted at the lower end of the throttle valve body, the throttle valve rod and the adjusting hand wheel are connected with each other, a union knocking cap is movably mounted at the lower end of the adjusting hand wheel, and the size of the union knocking cap and the size of the union interface are matched with each other.

Preferably, the outside movable mounting of adjusting hand wheel has locking screw, and adjusting hand wheel's lower extreme fixed mounting has the packing box to fixed mounting has the sealing protection piece in the packing box.

Preferably, a valve rod bushing is fixedly mounted on the throttle valve rod, a balance hole is reserved in the valve rod bushing, and the balance hole is designed in an L-shaped structure.

Preferably, the size of the throttling valve core is matched with that of the buffer cavity, the buffer cavity and the liquid inlet are communicated with the purging port, and the purging port and the liquid inlet are symmetrically arranged.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the novel plunger type throttle valve adopts a plunger type structural design, a throttle valve core is fixed, the plunger moves to realize throttling, and the plunger and the throttle valve core are in small clearance fit, so that the vibration condition in use is reduced;

2. according to the novel plunger type throttle valve, the outlet adopts large-bevel transition, the large-bevel transition adapts to the flow of fluid, the vibration can be reduced to a certain extent, the bush is additionally arranged, the impact of the fluid on the hard alloy is slowed down, and the phenomenon that the fluid directly crushes the hard alloy is avoided or reduced;

3. this novel plunger type choke valve through increasing the intensity of whole device, can be better install simple structure to make things convenient for on-the-spot maintenance, the centre is equipped with great fluid cushion chamber, can cushion the impact of import fluid to the throttling element, better use.

Drawings

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

FIG. 2 is a schematic view of the valve body structure of the present invention;

FIG. 3 is a schematic view of the valve rod structure of the present invention;

fig. 4 is the structure diagram of the packing box of the present invention.

In the figure: 1. a throttle body; 2. a blind flange; 3. mounting screws; 4. a pressure relief port; 5. a protective retainer ring; 6. adjusting a hand wheel; 7. a scale indicator; 8. a throttle lever; 9. a throttle valve cartridge; 10. a union interface; 11. a liquid inlet; 12. a buffer cavity; 13. a purge port; 14. a liquid outlet; 15. a balance hole; 16. a valve stem bushing; 17. locking screws; 18. knocking the cap by the union; 19. a packing box; 20. a seal guard.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a novel plunger type throttle valve comprises a throttle valve body 1, wherein a blind flange 2 is movably mounted at one end of the throttle valve body 1, mounting screws 3 are movably mounted at the outer side of the blind flange 2, a pressure relief opening 4 is fixedly mounted at one end, far away from the throttle valve body 1, of the blind flange 2, a protection check ring 5 is fixedly mounted at one end, close to the throttle valve body 1, of the blind flange 2, an adjusting hand wheel 6 is movably mounted at the upper end of the throttle valve body 1, a scale indicator 7 is movably mounted at the lower end of the adjusting hand wheel 6, a throttle valve rod 8 is movably mounted in the throttle valve body 1, a throttle valve core 9 is movably mounted at the lower end of the throttle valve rod 8, a throttle valve body 1 is fixedly mounted at the upper end of the throttle valve body 1, a liquid inlet 11 is fixedly mounted at one end of the throttle valve body 1;

furthermore, the throttle valve body 1 is designed to be a cylindrical structure, the size of the throttle valve body 1 is matched with that of the blind flange 2, at least two groups of mounting screws 3 are symmetrically arranged on the blind flange 2, and the pressure relief port 4 on the blind flange 2 corresponds to the purging port 13, so that the throttle valve body can be connected and mounted better;

furthermore, a liquid outlet 14 is fixedly arranged at the lower end of the throttle valve body 1, a throttle valve rod 8 and an adjusting hand wheel 6 which are arranged on the inner side of the throttle valve body 1 are mutually connected, a union knocking cap 18 is movably arranged at the lower end of the adjusting hand wheel 6, and the size of the union knocking cap 18 is matched with that of the union interface 10, so that the mounting stability can be better ensured;

furthermore, a locking screw 17 is movably mounted on the outer side of the adjusting hand wheel 6, a packing box 19 is fixedly mounted at the lower end of the adjusting hand wheel 6, and a seal protection piece 20 is fixedly mounted in the packing box 19, so that protection can be better performed;

furthermore, a valve rod bushing 16 is fixedly arranged on the throttle valve rod 8, a balance hole 15 is reserved in the valve rod bushing 16, and the balance hole 15 is designed in an L-shaped structure, so that the relative stability of the interior can be ensured, and the occurrence of vibration can be reduced;

further, the size of throttle valve core 9 and the size of buffer cavity 12 are mutually adapted, and buffer cavity 12 and inlet 11 communicate with blowing opening 13 each other to blowing opening 13 and inlet 11 symmetry each other set up, the work of regulation control that can be better, the degree of difficulty when reducing the equipment use.

The working principle is as follows: firstly, the whole device and the corresponding pipeline are connected, the device is used after the installation work is finished, the internal adjustment work can be carried out by rotating the adjusting hand wheel 6 and matching the adjusting hand wheel 6, the positions of the throttle valve rod 8 and the throttle valve core 9 are adjusted to meet the use requirement, and then the device is used for conveying through the liquid inlet 11 and the buffer cavity 12, and when the device works, the balance holes 15 can be protected, and when the device is used, the pressure can be adjusted through the pressure relief port 4, the purging port 13 is used for cleaning, the device can work better, the device can be mounted better by increasing the strength of the whole device, the structure is simple, and the fluid buffer cavity is arranged in the middle, so that the impact of the inlet fluid on the throttling element can be buffered, and the fluid buffer cavity is better used.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 novel plunger type choke valve, includes throttle body, its characterized in that: the one end movable mounting of throttle valve body has the blind flange, the outside movable mounting of blind flange has the installation screw, the blind flange is kept away from the one end fixed mounting of throttle valve body and is had the pressure release mouth, the one end fixed mounting that the blind flange is close to the throttle valve body has the protection retaining ring, the upper end movable mounting of throttle valve body has adjusting handle, adjusting handle's lower extreme movable mounting has the scale indicator, the internal movable mounting of choke valve has the throttle valve rod of choke valve, the lower extreme movable mounting of throttle valve rod has the throttle valve case, the upper end fixed mounting of throttle valve body has the throttle valve body, the one end fixed mounting of throttle valve body has the inlet, the other end fixed mounting of throttle valve body has the mouth of sweeping, fixed mounting has the buffering cavity between mouth and the.

2. The new plunger-type throttle valve as set forth in claim 1, wherein: the throttle valve body is designed into a cylindrical structure, the size of the throttle valve body is matched with that of the blind flange, at least two groups of mounting screws are symmetrically arranged on the blind flange, and the position of a pressure relief opening on the blind flange corresponds to the position of a purging opening.

3. The new plunger-type throttle valve as set forth in claim 1, wherein: the lower end of the throttle valve body is fixedly provided with a liquid outlet, the throttle valve rod on the inner side of the throttle valve body is connected with the adjusting hand wheel, the lower end of the adjusting hand wheel is movably provided with a union knocking cap, and the size of the union knocking cap is matched with that of the union interface.

4. The new plunger-type throttle valve as set forth in claim 1, wherein: the outside movable mounting of adjusting hand wheel has locking screw, and adjusting hand wheel's lower extreme fixed mounting has the packing box to fixed mounting has the sealing protection spare in the packing box.

5. The new plunger-type throttle valve as set forth in claim 1, wherein: a valve rod bushing is fixedly mounted on the throttle valve rod, a balance hole is reserved in the valve rod bushing, and the balance hole is designed in an L-shaped structure.

6. The new plunger-type throttle valve as set forth in claim 1, wherein: the size of the throttling valve core is matched with that of the buffer cavity, the buffer cavity and the liquid inlet are communicated with the purging port, and the purging port and the liquid inlet are symmetrically arranged.