CN203431212U - Sleeve regulating valve with energy storage sealing ring - Google Patents

Abstract

Provided is a sleeve adjusting valve with an energy storage seal ring. The problem that a sealing device is not arranged between a valve core and a sleeve of an existing sleeve adjusting valve, and accordingly leakage occurs at the upper sealing position after a medium passes through balance holes of the sleeve and the valve core is mainly solved. The sleeve adjusting valve is characterized in that a cross section of the valve core (3) is U-shaped, the energy storage seal ring (6) is arranged between an upper sleeve (4) and a lower sleeve (5), and the valve core (3) is provided with the first position extruding the energy storage seal ring (6) and the second position separated from the energy storage seal ring (6). Due to the fact that the energy storage seal ring is arranged between the upper sleeve and the lower sleeve, the sealing performance of the valve can be greatly improved. In addition, a compensation spring is built in the energy storage seal ring, the service life is long, and the stability of the valve for long-time working is ensured.

Description

Sleeve regulating valve with energy storage sealing ring

technical field

The utility model relates to a valve, in particular to a sleeve regulating valve with an energy storage sealing ring.

Background technique

The valve is a control component in the fluid delivery system, which has the functions of diversion, interception, adjustment, throttling, backflow prevention, diversion or overflow pressure relief. In the existing sleeve regulating valve, the sleeve part mostly adopts upper and lower split structures, and the seal of the lower sleeve is usually a metal seal, and there is no sealing device between the upper sleeve and the lower sleeve, which causes the medium to pass through the sleeve. Leakage occurs at the upper seal after the balance hole of the cartridge spool. The leakage level of the valve is greatly reduced, which affects field use.

Utility model content

In order to overcome the shortcomings of the background technology, the utility model provides a sleeve regulating valve with an energy storage sealing ring, which mainly solves the problem that the existing sleeve regulating valve does not have a sealing device between the valve core and the sleeve, causing the medium to pass through After the balance hole of the sleeve spool, there is a problem of leakage at the upper seal.

The technical scheme adopted by the utility model is: a sleeve regulating valve with an energy storage sealing ring, including a valve body and a valve stem. The upper sleeve and the lower sleeve are in conflict, the cross-section of the valve core is U-shaped, an energy storage sealing ring is provided between the upper sleeve and the lower sleeve, and the valve core has a squeeze energy storage seal A first position of the ring and a second position separated from the energy storage seal ring.             

The lower sleeve is provided with a throttling port, and the size of the throttling port is smaller than the flow channel in the valve body.

The upper sleeve is extended with a first protrusion, and the lower sleeve is extended with a second protrusion, and the first protrusion and the second protrusion cooperate with each other to form an adapter for the energy storage sealing ring groove. A balance hole is provided on the spool.

A sealing gasket is provided between the lower sleeve and the valve body.

The energy storage sealing ring includes a ring body wrapped with a compensation spring, and the ring body is made of polytetrafluoroethylene.

The beneficial effects of the utility model are: the sealing performance of the valve is greatly improved due to the arrangement of the energy storage sealing ring between the upper sleeve and the lower sleeve, and the energy storage sealing ring has a built-in compensation spring, which has a long service life and ensures The long-term stability of the valve is ensured.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is an enlarged view of Fig. 1A.

In the figure 1-valve body, 2-valve stem, 3-spool, 31-balance hole, 4-upper sleeve, 41-first bump, 5-lower sleeve, 51-throttle port, 52-the first Two bumps, 6-energy storage sealing ring, 61-ring body, 62-compensating spring, 7-groove, 8-sealing gasket.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1 in conjunction with Figure 2, a sleeve regulating valve with an energy storage sealing ring includes a valve body 1 and a valve stem 2, the valve stem 2 is connected to a valve core 3, and the valve body 1 There are upper sleeve 4 and lower sleeve 5 which conflict with each other, the section of the valve core 3 is U-shaped, and an energy storage sealing ring 6 is arranged between the upper sleeve 4 and the lower sleeve 5, so The aforementioned spool 3 has a first position where it squeezes the energy-storage seal ring 6 and a second position where it is separated from the energy-storage seal ring 6 .             

The lower sleeve 5 is provided with a throttling port 51 , and the size of the throttling port 51 is smaller than that of the flow channel in the valve body 1 . Flexible opening and closing, quick valve response.

The upper sleeve 4 is extended with a first protrusion 41, the lower sleeve 5 is extended with a second protrusion 52, and the first protrusion 41 and the second protrusion 52 cooperate to form a The groove 7 where the energy storage sealing ring 6 fits. Compact structure, good sealing. The valve core 3 is provided with a balance hole 31. Balance the pressure on both sides of the valve core 3, improve the sensitivity of the valve core 3, and the valve responds quickly.

A sealing gasket 8 is provided between the lower sleeve 5 and the valve body 1 . Improve the tightness of the mechanism.

The energy storage sealing ring 6 includes a ring body 61 wrapped with a compensation spring 62, and the ring body 61 is made of polytetrafluoroethylene. After the ring body 61 is worn or the elastic force decreases, the compensation spring 62 starts to support to realize the sealing compensation, which improves the service life of the mechanism.

The utility model is specifically used as follows: when working, the valve core 3 is driven by the valve rod 2, squeezes the compensation spring 62, and the medium entering the balance hole 31 cannot pass through the sealing surface between the valve core 3 and the upper sleeve 4; The body 61 wraps the compensating spring 62 , and the compensating spring 62 is in interference fit with the groove 7 . After the seal ring works for a period of time, due to wear, extrusion, deformation and other reasons, the size will change. At this time, the compensation spring 62 starts to support to realize the seal compensation. The compensated seal can ensure the seal to continue to work and achieve long-term stability. Sealed function.

The beneficial effect of the utility model is: the sealing performance of the valve is greatly improved due to the energy storage sealing ring arranged between the upper sleeve and the lower sleeve, and the energy storage sealing ring has a built-in compensation spring, which has a long service life and ensures The long-term stability of the valve.

Claims (6)

1. the sleeve adjusting valve with accumulation of energy seal ring, comprise valve body (1), valve rod (2), on described valve rod (2), be connected with spool (3), in described valve body (1), be provided with competing upper bush (4), lower sleeve (5), it is characterized in that: described spool (3) cross section is U-shaped, between described upper bush (4), lower sleeve (5), be provided with accumulation of energy seal ring (6), described spool (3) has the primary importance and the second place separated with accumulation of energy seal ring (6) of extruding accumulation of energy seal ring (6).

2. the sleeve adjusting valve with accumulation of energy seal ring according to claim 1, is characterized in that: described lower sleeve (5) is provided with restriction (51), and described restriction (51) size is less than valve body (1) inner flow passage size.

3. the sleeve adjusting valve with accumulation of energy seal ring according to claim 1, it is characterized in that: on described upper bush (4), be extended with the first projection (41), on described lower sleeve (5), be extended with the second projection (52), described the first projection (41) complements each other to form the groove (7) adaptive with accumulation of energy seal ring (6) with the second projection (52).

4. the sleeve adjusting valve with accumulation of energy seal ring according to claim 1, is characterized in that: described spool (3) is provided with equalizing orifice (31).

5. the sleeve adjusting valve with accumulation of energy seal ring according to claim 1, is characterized in that: between described lower sleeve (5) and valve body (1), be provided with gasket seal (8).

6. the sleeve adjusting valve with accumulation of energy seal ring according to claim 1, it is characterized in that: described accumulation of energy seal ring (6) includes ring body (61), described ring body (61) is enclosed with counterbalance spring (62), and described ring body (61) consists of teflon.

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