JPS58500535A - Back pressure valve, especially for pipelines, ensuring unidirectional flow of the flowing medium - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] name of invention Back pressure valve, especially for the mother line, ensuring unidirectional flow of the flow medium Field of invention.

The present invention provides a flow control system with a closing head that can move axially in the flow medium. Particularly related to back pressure valves for pipelines, ensuring unidirectional flow of medium It is.

Background technology Currently, armatures of various constructions are used to achieve unidirectional flow. Ru. In addition to those that pass through the usual Pall check valve or adjustment flap, GUSTAV F, GERD, Bremen (GUSTAV F, GERD TS KG, BREMEN) company catalog is equipped with a disc-shaped closing member. A check valve is provided, the closing member of which is secured within the housing. The housing is provided with a lip projecting on its exterior or into the medium, i.e., a special base. The piston/ring element serves as a guiding mechanism. Housing of the above valve The ring has been expanded to achieve a suitable cross-sectional area. flat disc closure The length of the structure for the chain elements should be optimally short, and the previous solution and the disappearance of rubé material This will result in significant cost savings. However, as stated in the catalog data, As such, the flow loss is equal to or greater than that of previously known structures. Legs 1. As a result, energy losses in systems with primarily forced flow The loss will be great. This loss is mainly due to sharp corners involved in flow separation, e.g. This is due, for example, to changes in the disc-shaped closure element and the transition cross-section on the downstream side.

Furthermore, non-uniform pressure is formed before and after the disc, which affects the metering characteristics. . Additionally, flat surfaces may be susceptible to scratches due to erosion or corrosion. The outer guide of the disc-shaped closure element does not provide the desired operational safety.

Disclosure of invention The object of the invention is that it can be mounted in the direction of action and compared to one known solution (but not of the type previously mentioned) - more favorable with respect to flow loss factors A barrier for backflow prevention that can be operated economically in terms of material consumption. The aim is to provide the rube.

Further requirements can be adjusted to the desired closure characteristics and within the limits of practical requirements. It must be simple in structure and stable in operation.

Structural design accommodates pressure, size, temperature and media ranges to meet industrial requirements It must be applicable to the surface and must be capable of being coated on the surface. There must be. Furthermore, it must not be suitable for special purposes such as heating or cooling. must be able to indicate the closed and open states, and at the same time decelerate It must be possible to close the system.

According to the present invention, the above objects are achieved as follows. In other words, the original Lightly equipped with an axially displaceable closing head to ensure unidirectional flow of the flow medium In particular, the back pressure valve for the mother eve line is equipped with a closing head and whose surface is The surface follows the streamlines of the flow medium and also has ribs that facilitate the passage of the medium into the fluid medium. one with a fixed bearing element and a guide pin guiding the closing head; The housing together with the closing head defines a closing guarantee surface and secures the bearing element. provided for at least the inner surfaces and ribs of the housing and bearing elements. and the outer surface of the closure head is directed downstream from the closure diameter into the flow medium in the open position. Therefore, the flow path cross-section is constant up to the end of the enclosed closure head profile or A back pressure valve is provided, characterized in that the back pressure valve is formed to be narrow.

According to a preferred embodiment of the backpressure valve, the closing head and the guide pin of the bearing element A spring is placed between the two. In addition, on the downstream side, the flow path cross section is closed to the head. and at least the end of the closing profile, while the connection from there Continuously increasing embodiments are also advantageous.

The backpressure valve housing is sealed around a coupling flange connected to the valve. It is convenient that it is

The closing head may be configured as a solid body or still be configured as a hollow body. It is Noh. Solid closure head with internal metal reinforcing elements and sealing properties Can be manufactured from materials.

For example, on valve surfaces in contact with the media where chemical erosion or corrosion may occur. Coatings such as rubber, synthetic materials, PTFE, enamel, chrome, nickel, etc. It is convenient to apply

The back pressure valve according to the present invention can be mounted in any desired direction and has the desired closing characteristics. It is well suited for closed processes, especially delayed closures. flow The profile followed by the medium and the cross-sectional area of the flow path that does not increase downstream. A reduction in fluid losses is ensured compared to known types. Because this As a result of the mutual transfer of energy between fluid separation pressure and velocity, pressure The losses are significantly reduced, i.e. due to the continuous reduction of the cross-sectional area on the downstream side This simultaneously eliminates the fluid separation induced by the difference.

Compared to known types, the reduction in material consumption is particularly advantageous when the housing is placed between the flanges. This is accomplished in a clamping structure. Using a housing with a closed cavity In particular, problems related to thermal power technology are also solved. At the same time, the housing By forming the valve body and bearing elements as a single valve body, manual or mechanical Machine work can be significantly reduced.

Maintenance of the valve according to the invention is especially important when the valve seat is used as a closing surface. In some cases, it can be carried out easily and economically. Simple structure and flow Since there are no sliding surfaces that touch the medium, a high degree of operational safety is achieved.

If the closure head is equipped with a magnet and the housing contains a coil, the Lube can be used as an indicator to indicate the direction of flow, and its simple The structure can easily be coated with a protective coating.

A special advantage is that the housing is constructed as a cylindrical shell that is subject to excessive internal pressure. Therefore, it can be used within the pressure and size range required industrially, and the given The advantage is that the structural length can be the same under any pressure at the given dimensions. be.

Brief description of the drawing The invention will now be described in detail with reference to some preferred embodiments with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of one embodiment, FIG. 2 is a longitudinal sectional view of another embodiment, Figure 3 shows an example in which the housing and bearing element are constructed as an integrated valve body. A longitudinal cross-sectional view of the example; FIG. 4 is a sectional view of a rigid closure head with metal reinforcing elements; FIG. 5 shows a further embodiment shown in longitudinal section, and FIG. 6 shows an embodiment with a hollow housing and a closing head.

BEST MODE FOR CARRYING OUT THE INVENTION The housing 3 of the embodiment according to FIG. 1 is clamped between the connecting flanges 6 by screws. A valve is installed at the point where the diameter of the media inlet becomes small on the inflow side. The bushing seat 12 is fixedly disposed by means of an adhesive, an adhesive, or a shrink fit. Tsuyoshi The closed head 1 is provided with a hole 20. On the downstream side, there is a bear with ribs 2a. The ring elements 2 are provided, these ribs 2a carry a closing head arranged in the flow channel. The guide pin 2b has a wing-shaped cross-sectional area connected to the guide pin 2b. Valve opens or closes When closing, the hole 20 in the closure head 1 opens into or out of the space 20a in the front of the guide bin 2a. The inflow or outflow of the medium from the space 20a is ensured. Closed head with threads It is arranged between the guide bin 2b and the closing head 1 on the funnel 17 fixed to the door 1. A tab spring 4 is provided, which applies pressure to the closing head 1. Seen in Figure 1 Apply tension to the closing ring 1 by simple repositioning of the spring 4 so that You can also do that. Therefore, this embodiment can be mounted in any direction and at the same time The desired closing characteristics can be adjusted by the calculated compression force and proper positioning of the spring. I can do it.

The outflow side of the bearing 2 is connected by a threaded joint within the seal diameter of the flange 6. - Can be fixed in a clamp, thus eliminating the need for a separate sealing element.

By selecting an appropriate profile, a cross section of the flow path is formed, and that cross section is the same as the valve seat. 12 to the end of the guide bin 2b, while the high performance The diffuser trajectory is guided to the inlet cross section. given dimensions and identical equipment. A back-pressure valve formed in a particular way in the welding length simply responds to the pressure It can be applied to media of any pressure by simply changing the external dimensions of the lamp. Wear. In the embodiment of FIG. 2, the bearing element 28 is dialed into a threaded connection. fixed on the inlet side of the housing 7 within a range (not shown here); The valve seat 11 is also fixed at the same time. Configurations and springs on fluid machines The clamp is the same as that shown in FIG.

In the open position of the valve the screw 17 limits the end position of the closing head 29 and this The closure head must be adjusted during the installation process. When the closing head moves , the hole 18 formed in the guide pin of the bearing element 28 ensures the outflow or inflow of the medium. keep The diffuser is placed on the discharge side. To minimize the materials needed In addition, in order to reduce the weight, the closing head is provided with a cavity.

In the embodiment of FIG. 3, the coupling element 5 is formed with a diffuser. one body The guide bin 13a of the lube body 13 is arranged on the discharge side, and the medium is placed in the system on this discharge side. Leave Tim. The shaft hole 21 of the guide bottle is closed so that the medium does not enter during the movement of the rad 32. and facilitate runoff. The rigid closure head is connected to the guide pin 13a and Its nose is slightly expanded so that there is less inflow resistance. Closed immediately A valve seat is disposed in a groove formed in the diameter portion. /? rubdeday 13 On the inflow side/? Luzocy) 11 is clamped by the insertion member 14, which This allows for faster repairs.

To achieve this, its diameter is adjusted to the closed position after removing parts 11 and 14. The head 32 is selected such that the head 32 can be lifted or installed. The embodiment shown in Figure 3 is Mounting is only possible in the position shown υ, while the closing characteristics depend on the closing head 320 weight. You can change it.

By inserting the spring 4 used in the previous embodiment, it can be used both vertically and horizontally. It is also possible to install it. Valve body 13 is connected to the system via thread 8 Can be connected.

From the examples given above, this type can be manufactured with minimal required materials. Ru. For example, the valve body 13 can be configured as a shell.

In the embodiment shown in FIG. 4, the closure pad 41 is the sealing material itself, eg rubber. material, polyurethane, etc., preferably with expanded resin. Hole 1 inside A metal reinforcing element 15 with 5a is connected to the leg guide pin 2b. this structure The main advantage of The advantage is that a closure member with less sensitivity is obtained.

The embodiment of the invention shown in FIG. 5 meets special requirements. That is, the screw Inside the pressure ring 23, which is fixed in the closing head 34 by a strip, there is a magnet 2. A coil 26 is provided on the inflow side of the clamp 36. This is because that.

Pressure ring 23 maintains pencil seat 24 in position. closed head 3 4 is displaced, the magnetic field lines of the magnet 25 intersect with the coil 26, and as a result a current is induced. be done. The thus generated / o ruses are e.g. Can be used for starting or stopping. For other components, see Figures 1 and 2. and formed according to FIG.

According to the embodiment of FIG. 6, the clamp 27 is formed with a closed cavity 9 and , a cold or warm energy carrier is led into this cavity via the opening 10. It will be done. In this way, this valve avoids heating that would be harmful to the armature. It can also be applied to medium of high temperature. The hollow closing head 30 has a spherical shape. The spherical shell is formed as a shell and is connected to the guide pin 19 by means of an insert 16. The insert is connected to the guide pin by a threaded pound. media flow The closure head 30 is provided with holes 33 to make it possible to ensure entry and exit. , and holes 31 are provided in each of the insertion members.

Such a configuration of the closure head 30 is especially useful in large dimensions and high pressure ranges. considered to be the most advantageous. For other parts of the armature, see Figure 1. , formed according to FIGS. 2 and 3.

Back pressure pulp works as follows. The closing head is in the closed position before flow starts It is in. Once the medium flow is started, the closing head moves over the guide bin depending on the closing characteristics. By moving ↓, the channel cross section is set to a free state. When the flow stops, the valve Depending on the closing characteristics of the closure head, before the closure, simultaneously with the closure, or following the closure moves again and closes the channel cross section.

2 too Procedural amendment (formality) January 1982 (Sunday) Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1 Display of incident POT/HU82100016 2 Name of the invention Backpressure pump, especially for pipelines, ensuring unidirectional flow of the flow medium 3 Person making the amendment Relationship to the incident: Patent applicant 6 Target of correction translation of the drawing 7. Contents of correction Attached circular (no changes in content) 8. List of attached documents 1 copy of a translation of the painted drawing

Claims (2)

[Claims] 1. Equipped with an axially displaceable closing head to ensure unidirectional flow of the flow medium , especially in the back pressure pulp for mother eve line, the closed head (1,29°30. 31, 32, 34), the surface of which follows the streamlines of the flowing medium and furthermore Bearing elements (2,2 8, 35) and guide the closing head (1° 29. 30. 31. 32, 34) Equipped with guide bins (2b, 13a * 19t 28a), on the other hand / %Using (3,7,27,36) is closed head (1°29.30,31,32 , 34) and of the bearing elements (2, 28, 35). Provided for fixation, at least the housing (3, 7, 27, 36) and the bearing inner surface of the closing element (2°29.30, 32.35) and the lip (2a) and the closing head. (1., 29, 30. 31, 32. 34) on the downstream side in the open position. from the closed diameter to the end of the closed head profile surrounded by the flow medium. The channel is characterized by a constant or narrow cross section. back pressure/SS roux 2. Proposed closure head (1, 29, 30) and bearing element (2, 28, 35) Claims in which a spring (4) is disposed between the inner bottle (2b #288119) The back pressure valve according to item 1. 3. In the open position, on the downstream side, the flow path cross section is at least slightly different from the closed head. The field narrows between the ends of the field, while the field increases continuously from there. The back pressure valve according to claim 1 or 2. 4. The housing (3, 27, 36) is connected to the coupling flange (6) via the seal coupling part. ) The back pressure according to any one of claims 1 to 3, which is flanged between valve. 5. A closed cavity (9) is provided inside the housing (27) and a hole (10) is provided therein. ) is provided and used for introducing a cooling or heating medium. The back pressure valve according to any one of the above. 6. The bearing element (2) is connected to the housing (3, 36) on the discharge side. A back pressure valve according to any one of claims 1 to 5. 7. The bearing element (28) is connected to the housing (7) on the inflow side. The back pressure valve according to any one of claims 1 to 5. 8. The housing is attached to the guide bin (13a) carrying the closing head (32). formed as a pulp body (13) connected via 2a); A valve is inserted into the sheet portion at the opposite end of the pulp body (13) by an insert member (14). The back pressure valve according to claim 1, wherein the back pressure valve is fixed. 9. Fits the guide pin (2b) of the bearing element (2) and is provided with a hole (20). 2. A backpressure valve according to claim 1, having a rigid closing head (1). 10, mating with the guide pin (19) carried by the rib (2a) and with the hole (31) , 33). A backpressure valve according to claim 1, having a hollow closing head. 11. The closing head (31) is made of sealing material and equipped with metal reinforcing elements inside it. A back pressure valve according to claim 1, which comprises: 12, within the closure head (32, 34) and/or within the housing (3, 7, 36); and/or the valve has a valve seat (11° 12.2 2.24) The back pressure valve according to claim 1, wherein: 13. On the downstream side, behind the closing diameter, in the closing head (1, 30) and/or Or a guide bin (2b. 28a) has a reservoir hole (18=20y21-16) for discharging into the space between them. The back pressure valve according to claim 1, wherein there are a, 31). 14, a magnet (25) is disposed within the closure head (34) and a housing (36); ) or within the valve debug (13). The back pressure valve described in item 1 below. 15. Surfaces in contact with the flow medium that are resistant to chemical attack or corrosive media. materials such as rubber, synthetic materials, PTFE, enamel, chrome, nickel, etc. Any one of claims 1 to 14 which is coated with a coating according to claim 1 Back pressure valve.