UA62020C2 - Valve, in particular for a heater - Google Patents

Abstract

A valve, in particular a valve of a heater, with a housing (2), with an inlet connection (3) and an outlet connection (4), and between the inlet connection (3) and the outlet connection (4) it has a shutoff body with valve element (13) and saddle of the valve (12). Such a valve can be used irrespectively of the direction of the flow. The housing (2) of the valve has inner chamber (5), this through the inlet mouth (6) is connected to outlet connection (3) and through the outlet mouth (7) is connected to the outlet connection (4), and the saddle (12) of the valve is at the first end (10) of the channel (9) inside the housing (8) of the saddle installed in the inner chamber (5) and able to move through rotation between he first position in which the second end (11) of the channel (9) covers the inlet mouth (6) and the second position in which the second end (11) of the channel (9) covers the outlet mouth (7), at that between the housing (2) of the valve and the outer wall of the channel (9) a gap is provided.

Description

the ring creates the best opportunity to rotate the saddle body evenly, avoiding one-sided loads.

This torque transfer rib is connected to the external mounting element and therefore may not extend outwards. Such a setting element is used in many valves, for example, to set the task for the flow rate.

Advantageously, the guide ring is connected to the valve seat via support arms that extend circumferentially as much as the free circumferential space between the support arms. This ensures that the water that passes through the gap between the valve element and the valve seat in the right amount does not come from the neck covered by the second end of the channel, but from the inner chamber. The saddle body itself does not obstruct the flow.

It is important that the supporting arm passes in a circumferential direction in the region of the second end of the channel. Here, the incoming water acts with considerable force, and the supporting arm creates the necessary resistance, and therefore the second end of the channel is held against the wall of the inner chamber.

The two support arms are set at a 180" angle to each other. This provides two advantages. First, it creates sufficient support for the seat body in the valve body on the water side.

Second, two arms with a correspondingly large gap between them create relatively little resistance to the flow of water through the valve.

The following is a description of examples of preferred embodiments with references to non-drawings, in which: Fig. 1 is a schematic cross-sectional view of the heater valve, Fig. 2 is an enlarged section, Fig. 3 is an axonometric view of the valve body.

Figure 1 shows a heater valve 1 with a valve body 2, which has an inlet connection C and an outlet connection 4. The terms "inlet connection" and "outlet connection" are chosen arbitrarily to emphasize the presence of two connections connections As will be discussed later, it is not necessary for water (or other liquid) to enter through inlet connection C and exit through outlet connection 4.

The body 2 of the valve has an internal chamber 5, connected to the inlet connection C inlet neck 6 and to the outlet connection 4 outlet neck 7.

In the inner chamber 5 there is a body 8 of the seat, in which there is a channel 9, which has a first end 10 and a second end 11. The first end 10 of the channel 9 forms a seat 12 of the valve (Fig. 2), which interacts with the valve element 13, which can be act through stem 14 in a conventional manner that needs no further explanation.

The stem 14 of the valve can be acted upon through the pin 15, which passes through the locking sleeve 16. The schematically shown spring 17 presses the valve element 13 from the seat 12 of the valve.

The second end 11 of the channel 9 is covered by a ring, for which a groove 19 is provided in the body 8 of the saddle, passing along the circumference of the second end 11.

As can be seen in Fig. 3, the seat 12 of the valve is connected by two support arms 20, 21 to the guide ring 22, installed in the nozzle 23 (Fig. 1, 2), screwed into the body 2 of the valve. Between the guide ring 22 and the nozzle 23, a small gap is provided, usually smaller than the one shown, which provides the possibility to turn the body 8 of the valve in the nozzle 23, and therefore in the body of the valve, without changing the position of the body 8 of the valve in the body 2 of the valve.

One of the support arms 20 (if viewed in the circumferential direction) rests on the seat 12 of the valve at the outlet of the second end 11 of the channel 9. The second support arm is offset by 180".

The guide ring 22 has an edge 24 for transmitting the rotational moment, formed, for example, by slots. In addition, the guide ring 22 can have a rib similar to the rib 24, but offset by 180". In each case, the rib 24 for transmitting the rotational moment is located near the support arms 20, 21.

Such an arrangement of elements ensures that the guide ring and its drive mechanism are engaged with each other while maintaining a predetermined angle or rotational position relative to each other.

The length of the support arms 20, 21 along the circumference is at most equal to, but, as a rule, much smaller than the length of the circumferential gap between the support arms. Therefore, the body 8 of the saddle has a large opening and practically does not create resistance to the passage of water (or other liquid).

To install the body 8 of the seat in the proper position in the body 2 of the valve, in the nozzle 23, an external mounting element 25 is used, which has a handle 26 removed from the nozzle 23. This handle can be grasped by hand or a suitable tool and, by turning it 180", move the housing 8 of the seat in the body 2 of the valve from the position shown in Fig. 1, when the second end 11 of the channel 9 covers the inlet 6, to the position when the second end 11 covers the outlet 7.

The shape of the inner chamber 5 corresponds to the upper spherical surface, that is, a spherical surface. At the same time, it should be rotationally symmetrical, due to which the body 8 of the seat, regardless of its angular position relative to the body 2 of the valve, more accurately sets the sealing surface 27 surrounding the second end of the channel 9, with an emphasis on the wall of the internal cavity 5. In addition, the spherical shape gives it is possible to ensure reliable sealing between the body 8 of the seat and the body 2 of the valve, which is additionally improved by the ring 18. Since in any rotational position of the body 8 of the seat in the body 2 of the valve, an increased gap between these two parts is kept, this eliminates the danger of the ring 18 leaving its groove 19. In fact, any rotationally symmetric shape can be used in practice.

A spring 27 can be additionally installed on the support arms to guide the valve element 13. This ensures accurate guidance of the valve element 8 on the valve seat 12 regardless of the angular position of the seat body 8 in the valve body 2.

As can be seen from Fig. 1, 2, the inlet neck 6 and the outlet neck 7 are deviated by approximately 45" from the vertical, that is, from the direction of movement of the valve element 13. The inlet connection C is directed horizontally, and the outlet connection is vertical. Due to this location of the inlet and outlet necks 6, 7, they have, in fact, the same cross-section.

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