UA99350C2 - Multi-way valve - Google Patents

Abstract

A multi-way valve tap has a base body in which with possibility of rotation one installs an equipped with through channels closure element for formation of connection between different connecting elements provided in the base body. The closure element is installed in the sealing body with through openings.

Description

The invention relates to a multi-way faucet with a main body, in which a locking element equipped with through channels is installed with the possibility of rotation in such a way as to ensure communication between the connecting elements provided in the main body.

Various versions of such multi-way cranes are known. In particular, in underground mining, similar multi-way cranes, which can be made, for example, as float cranes, are used to allow the movement of hydraulic cylinders in two directions, as well as to keep them in one position. Known at this point in this connection, float valves, that is, multi-way valves, have a relatively massive design, since each sealing surface of individual through channels is performed as a separate part. In other forms of execution, although the sealing surfaces are made small, they are destroyed relatively quickly.

The task of this invention is to create a multi-way crane of the above type, which would have a compact design and a long service life.

The solution to this problem is carried out using the features of clause 1 of the claims of the invention, and in particular by the fact that in the sealing housing with through holes, a locking element is installed, which has the shape of a ring with a gap in one place.

Thus, according to the invention, the sealing is not carried out at the expense of many sealing surfaces, but with the help of one sealing body, which surrounds the closing element. Because the seal housing is ring-shaped with a break in one location, the seal housing is allowed to flex slightly to accept the locking element during installation.

In addition, due to the use of a material with sufficient elasticity, the sealing body is then spring-loaded back into position, enclosing the closure element.

At the place of the ring break, the seal can be omitted if the corresponding connecting element is connected to the recirculation circuit of the hydraulic system, since the cavity outside the ring break can be connected to the recirculation circuit in order to perceive a possible leakage.

Expedient forms of implementation of the invention are set forth in the description, drawing, and dependent clauses of the formula.

According to the first expedient form of execution, the sealing body can have such a number of through holes that corresponds to the connecting elements, and one through hole is formed by the rupture of the ring. Thus, the gap of the ring, that is, the part of the periphery of the sealing housing that allows passage from the outside of the ring to the inside of the ring, can not only be used when installing the connecting element in the sealing housing, but also simultaneously serve as a passage hole for liquid.

According to another expedient form of execution, the sealing body can have such a number of through holes that corresponds to the connecting elements, and all of them except one are equipped with a sealing element. With such a form of execution, the rupture of the ring can be performed without a sealing element, which is especially appropriate when the corresponding connecting element is connected to the recirculation circuit of the hydraulic system.

According to another expedient form of implementation of the invention, the outer contour of the sealing body can be such that it does not have a round shape. In this way, scrolling is automatically stopped. As an alternative, in the case of a round outer contour of the sealing body, locking elements are provided that prevent the scrolling of the sealing body inside the main body.

According to a further expedient form of implementation of the invention, the sealing body can have one or more grooves, which, when the ring is expanded, namely when the locking element is installed inside the ring, contribute to the disappearance of material stress. Such grooves can be made, for example, as weakening holes in two corner sections of the sealing body. At the same time, it is advisable that the groove or grooves remain at least partially closed after installing the locking element in the sealing housing, for example by inserting a cylindrical pin into the loosening hole. In this way, it is ensured that after the installation of the locking element, the annular sealing body acquires the desired rigidity, which allows sealing against the locking element.

According to a further expedient form of implementation of the invention, the locking element can have one mainly spherical section, which is included in the sealing body with a geometric lock. As an alternative, the locking element can have a cylindrical shape and be mounted in a sealing housing. According to another expedient form of implementation of the invention, the sealing body in the area of at least one through hole has a seal, which includes an O-ring and a corresponding support ring. In this way, it is possible to create a seal between the closing element, the sealing element and the main body in a simple way.

If a backlash is provided between the support ring and the sealing body, then it is possible to ensure that the liquid under pressure creates a pressure force between the sealing body and the main body, as a result of which the force with which the sealing body in the places of individual connecting elements presses on the closing element depends on the existing pressure.

Next, the invention is explained in more detail with the use of an expedient example and with reference to the drawings. They schematically depict:

Fig. 1 - multi-way crane in cross section;

Fig. 2 - enlarged image of the section along the line II-II in fig. 1;

Fig. C is a cross-sectional view along the PI-P line in Fig. 1 and

Fig. 4 - sectional view of the sealing body according to fig. 1-3.

Fig. 1 shows a section of a multi-way valve with a main body 10, which in the illustrated embodiment has four connections A, B, P and KV to the pipeline under pressure. At the same time, connection P can be connected in a known way to the connection to the pipeline under pressure, and connection B to the connection to the recirculation circuit of the hydraulic system. Connections A and B can be connected to the connection to the piston of the cylinder and to the connection to the annular chamber of the hydraulic cylinder.

In addition, in fig. 1 shows the connection 12 to the reducing valve. Since in most cases of application excess pressure can occur only on one side, then this side is then connected to a safety valve. As shown in fig. 1, connection 12 to the reduction valve is connected to connection A.

A locking element 20 is rotatably mounted inside the main body, equipped with two through channels 16 and 18 to create a connection between the connections A, B, P and B provided in the main body. The locking element 20, which is at least partially spherical in shape (see Fig. 2 and Fig. 3), installed in the sealing housing 14, which has the form of a ring with a gap in one place (see Fig. 4).

As shown in particular in fig. 4, the annular sealing body 14 in cross-section has an approximately square outer contour with rounded corners, thus generally forming a cross-sectional shape in the form of the letter C, and between the free ends of this "C" there is a rupture of the ring 15. In addition, the sealing body 14 also the split ring 15 also has other through-holes 22, 24 and 26 that pass fluid from the outer periphery of the seal housing to the inner periphery of the seal housing. Inside the sealing body 14, i.e. along its inner contour, the sealing body has a spherical wall 28, made in addition to the spherical part of the closing element 20. The gap of the ring 15 is formed by a rectangular slot, while the through holes 22, 24 and 26 are formed by a two-stage round hole, in in which the first opening with a larger diameter passes on the outer periphery of the sealing housing 14 into a second opening with a smaller diameter, which leads inside the sealing housing 14.

In addition, fig. 4 shows that on both left corners of the sealing housing 14, recesses 30 and 32 are provided, which are designed as through-relief holes and each of them is connected by recesses Z1 or 33 to the outer periphery of the sealing housing 14. As shown in fig. 4, thanks to these loosening holes 30 and 32, the annular sealing body in the shape of the letter C can bend in the area of the rupture of the ring 15, and the recesses 30, 32 and 31 and 33 allow the separation of the free ends of the sealing body 14, since the stress of the material arising here is reduced.

In the illustrated embodiment, the sealing body 14 is made of polyetherketone (REEK).

This material has good density indicators and at the same time allows elastic bending and reverse springing of the free sides, that is, the ends of the ring of the sealing body 14, when the locking element is to be installed in it (see Fig. 2). After installing the locking element 20 in the sealing housing 14, the loosening holes 30 and 32 can be closed with a cylindrical pin 34 (see Fig. 3), which is inserted into the holes 30 and 32 by press fit. Thus, the sealing housing 14 receives preliminary stiffness.

As shown in particular in fig. 2, the locking element 20 with its spherical section is held in the sealing body 14 with a geometric lock. On its upper side, the locking element 20 has a projection 36, which can be connected to the transfer lever 38 (see Fig. 3), thanks to which the locking element can be scrolled around its axis X with the help of the transfer lever 38 relative to the sealing body 14 or the main body 10.

In addition, fig. 1 shows that in the sealing body 14 in the region of the through holes 22, 24 and 26 a seal is provided, which includes an O-ring 40 and a corresponding support ring 42. Both the O-ring 40 and the corresponding support ring 42 are placed in the corresponding larger diameter hole, and the support ring 42 is in the shape of the letter "I" in diameter, and the O-ring 40 is adjacent to both ends of the letter "I". When fully assembled, each support ring 42 abuts the main body 10 and presses the corresponding O-ring 40 against the sealing body 14, causing the O-ring 40 to compress slightly. At the same time, the support ring 42 has such dimensions that in this state a small gap 44 (see Fig. 2) remains between the sealing body 14 and the opposite flat side of the support element 42, thanks to which the liquid under pressure can flow from through hole to O-ring 40.

On the side of the main body 10, each support ring 42 on its outer periphery has a chamfer 46, as a result of which the hydraulically engaged plane of the support ring 42 on the side of the main body 10 is smaller than the corresponding hydraulically engaged plane on the opposite side of the support ring 42, that is, on the side of the sealing body 14 .If in this way the pressurized liquid enters the area of the through holes, it can pass through the gap 44 between the sealing body 14 and the support ring 42 and exert pressure on the O-ring 40, which in turn presses the sealing element 14 against the closing element 20. Thus, the sealing effect increases with increasing pressure.

Finally, fig. C shows that the sealing element 14 has a pocket 54 on its lower side which forms a hydraulic connection between the ring break or through hole 15 and the hole 52 leading to the connection to the recirculation line B.

In the one shown in fig. 1 position of the multi-way valve connection P to the pipe under pressure through through hole 24, through channel 16 and through hole 26 is connected to connection A.

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Claims (10)

1. A multi-way faucet with a main body (10), in which a locking element (20) equipped with through channels (16, 18) is installed with the possibility of rotation in such a way as to ensure communication between the connecting elements (A) provided in the main body (10) , B, P, K), which differs in that the locking element (20) is installed in the sealing body (14) with through holes (15, 22, 24, 26), which has the form of a ring open in one place. 2. A multi-way faucet according to claim 1, which is characterized by the fact that the sealing body (14) has the number of through holes (15, 22, 24, 26) corresponding to the connecting elements, one 13 of which is formed by the rupture of the ring. 3. A multi-way valve according to claim 1 or 2, which is characterized by the fact that the sealing body (14) has the number of through holes (15, 22, 24, 26) corresponding to the connecting elements, one of which is equipped with a sealing element. 4. A multi-way valve according to at least one of the previous items, characterized in that the outer contour of the sealing body (14) is not round. 5. A multi-way valve according to at least one of the previous points, characterized in that the sealing body (14) has at least one recess (30-33) which contributes to the expansion of the ring in order to reduce the stress of the material, and the recess (30, 32) in particular after installation of the locking element (20) in the sealing body (14) is at least partially closed. 6. A multi-way valve according to at least one of the previous points, which is characterized in that the closing element (20) has a section of predominantly spherical shape, which is included in the sealing body (14) with a geometrical closure. 7. The multi-way valve according to at least one of the previous points, which is characterized in that in the sealing body (14) in the area of at least one through hole (22, 24, 26) a seal is provided, which includes an O-ring (40) and corresponding support ring (42). 8. A multi-way valve according to claim 7, which is characterized by the fact that a gap (44) is provided between the support ring (42) and the sealing body (14). 9. A multi-way valve according to claim 2, which is characterized by the fact that the rupture of the ring (15) is connected to the connection (K) to the recirculation line. 10. The method of mounting a multi-way valve according to at least one of the preceding points, which is characterized by the fact that the closing element is installed in a curved sealing housing, and then the block from the closing element and the sealing housing is installed in the casing. A tiyi-mau maime tar paz a baze rodu ip m/pisp ma razriziriyu oi goiaiop ope ipeaiiz ap edirred mii (pgocdi spappe!iv siozyge eietepi og Tptaiop oi soppesiiop reimeeep aiNegepi soppesiipd eietepiz rgomidey ip She times of the kind. That siozyge eietepi iv ipeiaiIea ip eate zeaiipud kind my (pgocsdp orepipov.