CN219242666U - Waveform spring for orifice plate type throttle valve - Google Patents

Abstract

The utility model discloses a waveform spring for an oil well orifice plate type throttle valve, which comprises a main valve body, a valve cover and a valve rod, wherein the valve cavity is arranged in the main valve body, the valve cover is arranged at the top end of the main valve body through a fastening bolt and is communicated with the main valve body, the valve rod is movably inserted into the valve cover and the valve cavity, a valve seat is fixedly arranged in the valve cavity, a valve core is movably arranged in the valve seat, the bottom of the valve core is movably provided with the valve plug, and the waveform spring is fixedly connected between the valve core and the valve plug.

Description

Waveform spring for orifice plate type throttle valve

Technical Field

The utility model relates to the technical field of throttle valves, in particular to a waveform spring for an oil well orifice plate type throttle valve.

Background

A throttle valve is a valve that controls the flow of a fluid by changing the throttle cross section or throttle length. The throttle valve is a simple flow control valve, and in the hydraulic system of the constant displacement pump, the throttle valve is matched with the overflow valve to form three throttle speed regulating systems, namely an oil inlet way throttle speed regulating system, an oil return way throttle speed regulating system and a bypass throttle speed regulating system. The throttle valve has no flow negative feedback function, cannot compensate for unstable speed caused by load change, and is generally only used in occasions with small load change or low requirement on speed stability.

The existing throttle valve is only in two limit states of opening and closing, is inconvenient to adjust flow, can not change the throttle degree along with external power supply, and when the external power supply is unstable, the throttle valve is large in vibration, large in noise and serious in valve core abrasion due to the influence of medium flow negligence and high-speed medium fluid movement, and the traditional compression spring adopted in the existing throttle valve occupies a large space when the volume is large enough elastic force is ensured, so that the throttle assembly is large in volume and low in space utilization rate.

Disclosure of Invention

The utility model aims to provide a waveform spring for an oil well orifice plate type throttle valve, which solves the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an oil well orifice plate is wave spring for choke valve, includes main valve body, valve gap, valve rod, the inside valve pocket that is provided with of main valve body, the valve gap passes through fastening bolt to be installed main valve body top and with main valve body intercommunication, the valve rod activity is worn to insert in valve gap and the valve pocket, the inside fixed mounting of valve pocket has the disk seat, the activity is provided with the case in the disk seat, the case bottom activity is provided with the valve plug, fixedly connected with wave spring between case and the valve plug.

Preferably, two ends of the wave spring are respectively propped against the inner end surfaces of the valve core and the valve plug.

Preferably, the outer surface of the wave spring is wrapped with a corrosion-resistant isolation layer.

Preferably, the right side of the main valve body is fixedly provided with a liquid inlet, the bottom of the main valve body is fixedly provided with a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the valve cavity.

Preferably, a bearing seat and a valve rod nut are fixedly arranged at the top end of the valve cover, and the valve rod nut is sleeved on the valve rod.

Preferably, a valve body sealing ring is fixedly arranged at the joint of the main valve body and the valve cover.

Preferably, the top end of the valve rod is fixedly connected with an adjusting wheel.

Preferably, the valve rod, the valve core, the valve plug and the wave spring are all on the same straight line and are positioned at the axle center of the main valve body.

Preferably, when the liquid inlet and the liquid outlet are all communicated, the wave spring only elastically deforms.

Advantageous effects

The beneficial effects of the utility model are as follows:

according to the waveform spring for the orifice plate type throttle valve, the depth of the valve rod entering the main valve body is controlled through the adjusting wheel, the valve rod is used for pushing the valve core to compress the waveform spring, the waveform spring is compressed and then releases elastic potential energy to push the valve plug, the effect of throttling or stopping can be achieved under the action of the waveform spring and fluid pressure, soft well closing can be achieved, the pressure difference between a liquid inlet and a liquid outlet can be better controlled, vibration and noise are reduced, the waveform spring replaces a traditional compression spring, force change is changed from curve change to linear change, the throttle valve can be in a limited space, the force generated by the spring under the same deformation displacement is increased, the volume and the weight of the throttle valve are reduced, the space utilization rate is improved, the waveform spring is wrapped with the corrosion-resistant isolation layer, the waveform spring is prevented from being soaked by liquid, and corrosion is prevented, and the service life is prolonged.

Drawings

FIG. 1 is a schematic front view of the present utility model;

FIG. 2 is a schematic diagram of a front cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the utility model at A of FIG. 1;

the correspondence between the reference numerals and the component names in the drawings is as follows:

1. a main valve body; 2. a valve cover; 3. a valve stem; 4. a valve cavity; 5. a valve seat; 6. a valve core; 7. a valve plug; 8. a wave spring; 9. a liquid inlet; 10. a liquid outlet; 11. a bearing seat; 12. a valve stem nut; 13. a valve body sealing ring; 14. adjusting wheel

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

1-3, which are schematic structural views of a wave spring for an orifice plate type throttle valve according to a preferred embodiment of the present utility model;

the utility model discloses a waveform spring for an oil well orifice plate type throttle valve, which comprises a main valve body 1, a valve cover 2 and a valve rod 3, wherein a valve cavity 4 is arranged in the main valve body 1, the valve cover 2 is arranged at the top end of the main valve body 1 through a fastening bolt and is communicated with the main valve body 1, the valve rod 3 is movably inserted into the valve cover 2 and the valve cavity 4, a valve seat 5 is fixedly arranged in the valve cavity 4, a valve core 6 is movably arranged in the valve seat 5, a valve plug 7 is movably arranged at the bottom of the valve core 6, a waveform spring 8 is fixedly connected between the valve core 6 and the valve plug 7, the valve core is pushed by the valve rod, the waveform spring releases elastic potential energy after being compressed to push the valve plug, and a liquid circulation gap is reduced after the valve plug moves, so that a throttle effect is achieved.

According to the waveform spring for the oil well orifice plate type throttle valve, two ends of the waveform spring 8 are respectively abutted against the inner end surfaces of the valve core 6 and the valve plug 7, and two ends of the waveform spring 8 are fixedly connected with the inner end surfaces of the valve core 6 and the valve plug 7, so that enough driving force is provided for a throttle assembly.

According to the waveform spring for the oil well orifice plate type throttle valve, the corrosion-resistant isolation layer is wrapped on the outer surface of the waveform spring 8, and through the structure, the service life of the waveform spring 8 can be effectively prolonged, the waveform spring 8 is prevented from being corroded due to long-time soaking, and the throttle valve is prevented from being damaged.

According to the wave spring for the oil well orifice plate type throttle valve, the liquid inlet 9 is fixedly arranged on the right side of the main valve body 1, the liquid outlet 10 is fixedly arranged at the bottom of the main valve body 1, the liquid inlet 9 and the liquid outlet 10 are communicated with the valve cavity 4, and liquid enters the valve cavity 4 from the liquid inlet 9 and flows out of the liquid outlet 10 after being throttled.

According to the wave spring for the oil well orifice plate type throttle valve, the bearing seat 11 and the valve rod nut 12 are fixedly arranged at the top end of the valve cover 2, the valve rod nut 12 is sleeved on the valve rod 3, and when the valve rod 3 is regulated, the valve rod 3 is contracted through the valve rod nut 12, so that the valve rod 3 is prevented from loosening and changing the throttle effect.

According to the waveform spring for the orifice plate type throttle valve, the valve body sealing ring 13 is fixedly arranged at the joint of the main valve body 1 and the valve cover 2, so that the tightness of the throttle valve is ensured.

According to the waveform spring for the orifice plate type throttle valve, the top end of the valve rod 3 is fixedly connected with the adjusting wheel 14, so that the depth of the valve rod 3 entering the main valve body 1 can be conveniently adjusted.

According to the waveform spring for the orifice plate type throttle valve, the valve rod 3, the valve core 6, the valve plug 7 and the waveform spring 8 are all positioned on the same straight line and positioned at the axis of the main valve body 1, so that the stability of the throttle valve is ensured, and the force transmission is not dispersed at the same point.

According to the waveform spring for the orifice plate type throttle valve, when the liquid inlet 9 and the liquid outlet 10 are communicated, the waveform spring 8 only deforms elastically.

The waveform spring for the orifice plate type throttle valve is arranged in a common mechanical mode, and can be implemented as long as the beneficial effects of the waveform spring can be achieved.

The working principle of the utility model is as follows:

when the waveform spring for the orifice plate type throttle valve is used, when a medium for providing power to the outside enters the valve cavity through the liquid inlet, the valve plug 7 is extruded by fluid pressure to move upwards, at the moment, the waveform spring 8 is compressed to release elastic potential energy, the valve plug 7 moves upwards and is blocked, the valve cavity 4 and the liquid outlet 10 cannot completely circulate, and further the throttle effect is achieved, in addition, when an operator rotates the valve rod 3 through the regulating wheel 14, the depth of the valve rod 3 entering the main valve body 1 is regulated, the valve rod 3 pushes the valve core 6, and then the position of the valve core 6 is regulated to change the compression degree of the waveform spring 8, (the stronger the elastic potential energy released by the larger the compression of the waveform spring 8 is, the smaller the compression is, the opposite is the stronger the compression of the waveform spring 8 is), the strength of the elastic potential energy applied to the valve plug 7 is changed, and further the throttle size is changed.

The foregoing is a further elaboration of the present utility model in connection with the detailed description, and it is not intended that the utility model be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the utility model, should be considered as falling within the scope of the utility model as defined in the appended claims.

Claims (9)

1. The waveform spring for the orifice plate type throttle valve comprises a main valve body (1), a valve cover (2) and a valve rod (3) and is characterized in that a valve cavity (4) is arranged in the main valve body (1), the valve cover (2) is installed at the top end of the main valve body (1) through a fastening bolt and is communicated with the main valve body (1), the valve rod (3) is movably inserted into the valve cover (2) and the valve cavity (4), a valve seat (5) is fixedly installed in the valve cavity (4), a valve core (6) is movably arranged in the valve seat (5), a valve plug (7) is movably arranged at the bottom of the valve core (6), and a waveform spring (8) is fixedly connected between the valve core (6) and the valve plug (7).

2. The wave spring for an orifice plate type throttle valve of claim 1, wherein: the two ends of the wave spring (8) are respectively propped against the inner end surfaces of the valve core (6) and the valve plug (7).

3. The wave spring for an orifice plate type throttle valve according to claim 2, wherein: the outer surface of the wave spring (8) is wrapped with a corrosion-resistant isolation layer.

4. The wave spring for an orifice plate type throttle valve of claim 1, wherein: the right side of the main valve body (1) is fixedly provided with a liquid inlet (9), the bottom of the main valve body (1) is fixedly provided with a liquid outlet (10), and the liquid inlet (9) is communicated with the liquid outlet (10) and the valve cavity (4).

5. The wave spring for an orifice plate type throttle valve of claim 1, wherein: the top end of the valve cover (2) is fixedly provided with a bearing seat (11) and a valve rod nut (12), and the valve rod nut (12) is sleeved on the valve rod (3).

6. The wave spring for an orifice plate type throttle valve of claim 1, wherein: a valve body sealing ring (13) is fixedly arranged at the joint of the main valve body (1) and the valve cover (2).

7. The wave spring for an orifice plate type throttle valve of claim 1, wherein: the top end of the valve rod (3) is fixedly connected with an adjusting wheel (14).

8. The wave spring for an orifice plate type throttle valve of claim 1, wherein: the valve rod (3), the valve core (6), the valve plug (7) and the wave spring (8) are all positioned on the same straight line and are positioned at the axle center of the main valve body (1).

9. The wave spring for an orifice plate type throttle valve of claim 1, wherein: when the liquid inlet (9) is communicated with the liquid outlet (10), the wave spring (8) only deforms elastically.

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