阅读说明：本技术 一种水泵稳压调压阀 (Water pump pressure stabilizing and regulating valve ) 是由 桂林华 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种水泵稳压调压阀,组成包括阀体、阀杆、出水接头,出水接头与阀体匹配连接,阀体上设置有进口、溢流口,出水接头上设有出口,阀体上的锥度孔与阀体的进口相通,阀杆的头部是与阀体的锥孔相同锥度的锥体,尾部带有细牙螺纹,调压阀的进口、出口及溢流口通过螺纹管件分别与水泵的压水室、填料密封腔、吸水室连通,进水口有液压缓冲弹簧,液压缓冲弹簧也叫液压缓冲器,液压缓冲器依靠液压阻尼对作用在其上的液体进行缓冲减速至停止,起到一定程度的保护作用,从进水口出缓冲液体的巨大压力,降低了填料处轴封水泄漏量,从而降低轴功率,提高水泵的效率,节约电能,同时减少轴(轴套)与填料的磨损。(The invention discloses a water pump pressure stabilizing and regulating valve, which comprises a valve body, a valve rod and a water outlet joint, wherein the water outlet joint is connected with the valve body in a matching way, the valve body is provided with an inlet and an overflow port, the water outlet joint is provided with an outlet, a taper hole on the valve body is communicated with the inlet of the valve body, the head part of the valve rod is a cone with the same taper as the taper hole of the valve body, the tail part of the valve rod is provided with fine thread, the inlet, the outlet and the overflow port of the pressure regulating valve are respectively communicated with a water pumping chamber, a packing sealing cavity and a water suction chamber of a water pump through threaded pipe fittings, a water inlet is provided with a hydraulic buffer spring, the hydraulic buffer spring is also called as a hydraulic buffer, the hydraulic buffer buffers and decelerates liquid acting on the hydraulic buffer to stop by means of hydraulic damping, a certain degree of protection is achieved, the huge pressure of the buffer, save electric energy and reduce the abrasion between the shaft (shaft sleeve) and the filler.)

1. The utility model provides a water pump steady voltage air-vent valve, its characterized in that constitutes and includes valve body (11), valve rod (12), water connectors (13) and valve body (11) accordant connection, be provided with import (14) on the valve body, overflow mouth (15), be equipped with export (16) on water connectors (13), the tapering hole on the valve body communicates with each other with the import of valve body, the head of valve rod is the cone with the same tapering of the tapering hole of valve body, the afterbody has fine tooth screw thread, the import of air-vent valve, export and overflow mouth pass through screwed pipe spare respectively with the pumping chamber of water pump, the packing sealed cavity, the room intercommunication that absorbs water, there is hydraulic buffer spring (10) in water inlet (14).

2. The pressure stabilizing and regulating valve for water pumps according to claim 1 is characterized in that a locking nut (17), a rubber gasket (18), a sealing ring (19) and a rotation stopping pin (20) of the pressure regulating valve are further arranged in the components, the locking nut, the rubber gasket and the sealing ring are sequentially matched and connected with the valve rod (12), and the rotation stopping pin (20) is positioned at the top end of the locking nut (17).

Technical Field

The invention relates to a pressure regulating valve, in particular to a pressure stabilizing pressure regulating valve for a water pump.

Background

At present, a high-lift water pump of a packing sealing structure generally directly guides high-pressure water from a water pumping chamber of the water pump to a packing cavity to seal and lubricate packing, so that the pressure of shaft seal water in the packing sealing cavity is too high, the leakage amount of the shaft seal water at the packing position is too large, and a locking nut is loosened due to vibration. The filler is required to be compressed to reduce the leakage amount of the shaft seal water, so that the abrasion between the shaft (shaft sleeve) and the filler is increased, the shaft power of the pump is increased, and more electric energy is consumed. Although some water pumps are provided with a stop valve on a shaft seal water pipeline, the effect is not ideal in the use process.

Disclosure of Invention

1. Problems to be solved

Aiming at the problems in the prior art, the invention aims to provide a water pump pressure stabilizing and regulating valve, which solves the problems in the background story.

2. Technical scheme

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a water pump steady voltage air-vent valve, the constitution includes the valve body, the valve rod, water connectors and valve body accordant connection, be provided with the import on the valve body, the overflow mouth, be equipped with the export on water connectors, the taper hole on the valve body communicates with each other with the import of valve body, the head of valve rod is the same tapered cone with the taper hole of valve body, the afterbody has thin tooth screw thread, the import of air-vent valve, export and overflow mouth pass through screwed pipe spare respectively with the pumping chamber of water pump, the sealed chamber of packing, the room that absorbs water communicates, the water inlet has hydraulic buffer spring, hydraulic buffer spring also is called hydraulic buffer, hydraulic buffer relies on hydraulic damping to cushion the liquid that acts on above that and slows down to stopping, play certain degree.

The invention also comprises a locking nut, a rubber pad and a sealing ring of the pressure regulating valve, wherein the locking nut, the rubber pad and the sealing ring are sequentially connected with the valve rod in a matching way, and the tail part of the valve rod is provided with fine threads for regulating the opening degree of the valve rod and the valve body, namely the size of a water passing gap between the valve body and the valve rod so as to control the pressure and the flow of an outlet.

The pressure regulating valve is installed on the shaft seal water pipeline, the inlet of the pressure regulating valve is connected with the water pumping chamber of the water pump, the outlet of the pressure regulating valve is connected with the packing seal cavity, and the overflow pipe is connected with the water suction chamber of the water pump. When the valve rod is opened, high-pressure water enters the pressure regulating valve through the pipeline, and the pressure of the high-pressure water is reduced after the high-pressure water passes through a gap between the valve body and the valve rod, so that the purpose of pressure reduction is achieved. The opening degree of the pressure regulating valve is adjusted through rotating the valve rod, pressure and flow regulation can be carried out on water at the outlet of the pressure regulating valve, part of low-pressure water after pressure reduction enters the outlet of the pressure regulating valve and flows into the packing sealing cavity through the pipeline, and redundant water flows back to the water suction chamber of the water return pump through the overflow pipe, so that the regulation of the shaft seal water pressure and flow is realized.

Compared with the prior art, the invention has the beneficial effects that: the pressure regulating valve can be used for freely regulating the pressure and the flow of shaft seal water, the shaft seal water is ensured to reach the optimal pressure and flow, the huge pressure of buffer liquid is discharged from a water inlet, and the shaft seal water leakage quantity at the position of a filler is reduced, so that the shaft power is reduced, the efficiency of a water pump is improved, the electric energy is saved, and meanwhile, the abrasion of a shaft (a shaft sleeve) and the filler is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a water pump pressure stabilizing and regulating valve.

In the figure: the hydraulic buffer spring 10, the valve body 11, the valve rod 12, the water outlet joint 13, the inlet 14, the overflow port 15, the outlet 16, the locking nut 17, the rubber pad 18, the sealing ring 19 and the rotation stopping pin 20.

Fig. 2 is a schematic diagram of a use position structure.

In the figure: the device comprises a packing sealing cavity 1, a pressure regulating valve outlet connecting pipe 2, a pressure regulating valve 3, a water suction chamber 4, an overflow pipe 5, a pressure regulating valve inlet connecting pipe 6 and a water pressing chamber 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached figure 1, in the embodiment, the water pump pressure regulating valve comprises a valve body 11, a valve rod 12 and a water outlet connector 13, the water outlet connector 13 is connected with the valve body 11 in a matching mode, an inlet 14 and an overflow port 15 are formed in the valve body, an outlet 16 is formed in the water outlet connector 13, a taper hole in the valve body is communicated with the inlet of the valve body, the head of the valve rod is a cone with the same taper as the taper hole in the valve body, fine threads are formed in the tail of the valve rod, and the inlet, the outlet and the overflow port of the pressure regulating valve are respectively communicated with a water pumping chamber, a packing. The locking nut 17, the rubber pad 18, the sealing washer 19 of air-vent valve in the constitution, the locking nut, the rubber pad, the sealing washer is in proper order with valve rod 12 accordant connection, the thin tooth screw thread of afterbody of valve rod, a degree of opening for adjusting valve rod and valve body, the size of water clearance between valve body and valve rod promptly, so that the pressure and the flow of control export, seal with rubber pad and sealing washer, water inlet 14 has hydraulic buffer spring 10, hydraulic buffer spring also is called hydraulic buffer, hydraulic buffer relies on hydraulic damping to cushion the liquid that acts on it and slow down to stopping, play the guard action of certain degree, locking nut 17 can become flexible under long-time vibration, can prevent to become flexible with the cooperation of only commentaries on classics round pin 20.

Referring to the attached figure 2, a pressure regulating valve 3 is arranged on a shaft seal water pipeline, the inlet of the pressure regulating valve is connected with a water pressing chamber 7 of a water pump through a pressure regulating valve inlet connecting pipe 6, the outlet of the pressure regulating valve is connected with a packing sealing cavity 1 through a pressure regulating valve outlet connecting pipe 2, and an overflow port is connected with a water suction chamber 4 of the water pump through an overflow pipe 5. When the valve rod is opened, high-pressure water enters the pressure regulating valve through the pipeline, the liquid is decompressed through the hydraulic buffer device 10, and the pressure of the high-pressure water is reduced after the high-pressure water passes through a gap between the valve body and the valve rod, so that the purpose of decompression is achieved. The opening degree of the pressure regulating valve is adjusted through rotating the valve rod, pressure and flow regulation can be carried out on water at the outlet of the pressure regulating valve, part of low-pressure water after pressure reduction enters the outlet of the pressure regulating valve and flows into the packing sealing cavity through the pipeline, and redundant water flows back to the water suction chamber of the water return pump through the overflow pipe, so that the regulation of the shaft seal water pressure and flow is realized.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience of description of the present invention and simplification of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the present invention should not be construed as being limited thereto, and it should be noted that the terms "mounted" and "connected" should be interpreted broadly, for example, as being able to be fixedly connected, detachably connected, or integrally formed, mechanically connected or indirectly connected through an intermediate, and the specific meaning of the terms in the invention can be understood through specific situations.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.