CN216279588U

CN216279588U - Upper guide one-way valve

Info

Publication number: CN216279588U
Application number: CN202123124483.0U
Authority: CN
Inventors: 张畅
Original assignee: Hangzhou Daquan Pumps Technology Co ltd
Current assignee: Hangzhou Daquan Pumps Technology Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-04-12
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses an upper guide one-way valve which comprises a valve seat, a valve sleeve and a valve core, wherein the valve seat is fixedly connected with the valve sleeve, a water inlet hole is formed in the valve seat, a water outlet hole is formed in the valve sleeve, a valve sleeve inner hole is formed in the valve sleeve, a shaft extension end is arranged at the upper part of the valve core, the valve core shaft extension end is positioned in the valve sleeve inner hole and is positioned on the same central shaft, a sealing surface at the lower end of the valve core is a conical surface and is in clearance fit with an inner hole of a water inlet hole in the valve seat which is the same as the conical surface, the valve seat and the valve core are positioned on the same central shaft, a spring is sleeved between the valve core and the valve sleeve, a plurality of annular grooves are formed in the valve sleeve inner hole, guide rings are embedded in the annular grooves respectively, and are in clearance fit with the shaft extension end of the valve core. The valve core of the upper guide one-way valve cannot incline when rising and falling, and the upper guide one-way valve has the advantages of high overflowing capacity, good sealing property, long service life, simple structure, safety, reliability and the like.

Description

Upper guide one-way valve

Technical Field

The utility model relates to the technical field of valves, in particular to an upper guide one-way valve.

Background

The metering pump is an important component part in industrial fluid transportation equipment and has an irreplaceable position, and the one-way valve is one of core components of the metering pump. As a moving part of a hydraulic part in the pump, the one-way valve has small size, high requirements on flow capacity, high working frequency and high fluid pressure, needs to have good quick opening and closing, sealing performance and pressure bearing performance, is easier to break down than other parts of the pump, and has important function on normal and efficient work of the pump. When a medium passes through the one-way valve in the opening and closing processes of the traditional one-way valve, the acting force of the medium enables the valve core to deviate to one side in the movement process and generate friction with the valve sleeve and the valve seat, and therefore the problems that the one-way valve is not tight in sealing, the service life is shortened, the efficiency of a pump is reduced, the metering precision is reduced and the like are caused. And the guide structure can guide the valve element to stably reciprocate in the valve body while keeping the valve core from tilting. In order to meet the market development and the user requirements, it is necessary to develop a one-way valve which is applicable to various complex working conditions and has high flow capacity, good sealing performance, long service life, simple structure, safety and reliability.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model designs the upper guide one-way valve which has the advantages of high flow capacity, good sealing property, long service life, simple structure, safety, reliability and the like.

The utility model adopts the following technical scheme:

the utility model provides an upward direction check valve, includes disk seat, valve barrel and case, disk seat and valve barrel fixed connection, are provided with the inlet opening on the disk seat, are provided with the apopore on the valve barrel, are provided with the valve barrel hole in the valve barrel, and case upper portion is equipped with the axle and stretches the end, and the case axle stretches the end and is located the valve barrel hole, and both are in on same center pin, and the sealed face of case lower extreme is the conical surface, and with the hole clearance fit who goes up the apopore on the disk seat that is the conical surface together, the disk seat is in same center pin with the case, has cup jointed the spring between case and the valve barrel, is provided with a plurality of ring shape recesses on the valve barrel hole, and the ring shape recess is embedded into respectively has the guide ring, and the axle of case stretches end clearance fit. The valve core is kept not to incline during the lifting movement of the valve core.

Preferably, the bottom of the valve sleeve is in positioning threaded connection with the valve seat through a mortise structure, and a sealing gasket is arranged in the mortise of the valve seat. The structure ensures the sealing performance between the valve sleeve and the valve seat, and the combination is firm.

Preferably, an inner boss is arranged at the inner hole of the valve sleeve, the upper end face of the spring is in contact with the outer wall of the inner boss of the valve sleeve, and the lower end part of the spring is positioned with the valve core through the excircle of the shaft shoulder. The spring load of this arrangement ensures that the check valve has a faster closing speed and a smaller closing delay.

Preferably, the guide ring is made of carbon fiber or graphite.

The utility model has the beneficial effects that: (1) the structure is simple, the flow channel is smooth, the fluid resistance caused by the structure is reduced, and the overflowing capacity is high; (2) the upper guide structure is added, so that the valve core cannot incline when rising and falling, the sealing performance is good, the friction loss caused by inclination is reduced, and the service life is prolonged; (3) the compression spring is added to buffer the impact force of the valve core, the stability of the up-down stroke of the valve core is kept, meanwhile, the spring load accelerates the closing speed, the closing lag angle is reduced, the impact and backflow loss of the valve core are reduced, the pump efficiency is improved, and the pump is applicable to high-viscosity media; (4) the conical surface is adopted between the valve core and the valve seat for sealing, the concentric matching of the valve core and the valve seat is realized by the surface-surface contact of the valve core and the valve seat, the coaxiality is better, the contact area of the valve core and the valve seat is increased, and the sealing effect is improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

in the figure: 1. the valve comprises a valve seat, 2. a valve sleeve, 3. a valve core, 4. a guide ring, 5. a spring and 6. a sealing gasket.

Detailed Description

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

example (b): as shown in fig. 1, the upper guide one-way valve comprises a valve seat 1, a valve sleeve 2, a valve core 3, a guide ring 4, a spring 5 and a sealing gasket 6. The inner hole sealing surface of the water inlet hole of the valve seat 1 and the lower end sealing surface of the valve core 3 are both conical surfaces, the two are in clearance fit, and the valve seat 1 and the valve core 3 are positioned on the same central shaft. The bottom of the valve sleeve 2 is in positioning threaded connection with the valve seat 1 through a mortise structure, and the sealing gasket 6 is installed in the mortise of the valve seat 1. The upper part of the valve core 3 is provided with a shaft extension end, the inner hole of the valve sleeve 2 is provided with an inner boss, and the shaft extension end of the valve core 3 is positioned in the inner hole of the valve sleeve 2 and is positioned on the same central shaft. The inner hole of the valve sleeve 2 is provided with two circular grooves, the guide ring 4 is respectively embedded in the two circular grooves, the guide ring is in clearance fit with the shaft extension end of the valve core 3, and the valve core is kept not to incline in the lifting movement process of the valve core 3. The upper end surface of the spring 5 is contacted with the outer wall of the boss in the valve sleeve 2, and the lower end part of the spring is positioned with the valve core 3 through the excircle of the shaft shoulder.

When the metering pump works, the metering pump piston reciprocates, liquid enters the one-way valve from the water inlet hole of the valve seat 1, the valve core 3 is opened under the action of liquid pressure until the upper end of the shaft shoulder of the valve core 3 is contacted with the bottom of the inner boss of the valve sleeve 2, the lift range of the valve core 3 is limited, and the valve core 3 falls down under the action of the acting force of the spring 5 and the dead weight thereof and is closed. In the movement process of the valve core 3, the shaft extension end of the valve core vertically passes through the guide ring 4 in the inner hole of the valve sleeve 2, and the guide ring 4 ensures that the valve core 3 cannot incline and ensures the sealing property when the sealing surface of the lower end of the valve core is contacted with the sealing surface of the valve seat. Therefore, the normal periodic opening and closing of the one-way valve are realized, the channel of the working cavity between the inlet and the outlet is alternately opened or closed, and the normal suction and discharge processes of the conveying medium in the pump are realized.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the utility model as set forth in the claims.

Claims

1. The utility model provides an upper guide check valve, includes disk seat, valve barrel and case, disk seat and valve barrel fixed connection are provided with the inlet opening on the disk seat, are provided with the apopore on the valve barrel, characterized by, be provided with the valve barrel hole in the valve barrel, and case upper portion is equipped with the axle and stretches the end, and the case axle stretches the end and is located the valve barrel hole, and both are in on same center pin, and the sealed face of case lower extreme is the conical surface, and with the hole clearance fit who goes up the apopore on the disk seat that is the conical surface together, the disk seat is in same center pin with the case, has cup jointed the spring between case and the valve barrel, is provided with a plurality of ring form recesses on the valve barrel hole, and the embedding has the guide ring respectively in the ring form recess, and the axle of guide ring and case stretches end clearance fit.

2. The upper guide one-way valve as claimed in claim 1, wherein the valve housing is in threaded connection with the valve seat through a tongue-and-groove structure, and a sealing gasket is arranged in the tongue-and-groove of the valve seat.

3. The upper guide one-way valve as claimed in claim 1, wherein the inner hole of the valve housing is provided with an inner boss, the upper end surface of the spring is in contact with the outer wall of the inner boss of the valve housing, and the lower end part of the spring is positioned with the valve core through the excircle of the shaft shoulder.

4. The upper guide check valve as claimed in claim 1, wherein the guide ring is a carbon fiber or graphite guide ring.