WO2017178208A1

WO2017178208A1 - Valve element having a rfid chip

Info

Publication number: WO2017178208A1
Application number: PCT/EP2017/056967
Authority: WO
Inventors: Klaus Frankenbach; Juergen Mayer
Original assignee: Gemue Gebr. Mueller Apparatebau Gmbh & Co. Kommanditgesellschaft
Priority date: 2016-04-13
Filing date: 2017-03-23
Publication date: 2017-10-19
Also published as: DE102016106818B3

Abstract

The invention relates to a valve portion (12), in particular a valve housing (14) or a valve drive, comprising a blind hole (76), a contactlessly readable information memory (18) for recording and reproducing information relevant to the valve (10), a fastening element (66), by which the information memory (18) is arranged in the region of the blind hole (76), and a seal (16) of the information memory (18), which comprises the fastening element (66), the seal (16) being designed without adhesive.

Description

Title: Valve element with RFID-CHIP

description

The invention relates to a valve section, in particular a valve housing or a valve drive, having a blind hole, a contactless readable information memory for receiving and reproducing information relating to the valve, a fastening element, by means of which the information memory is arranged in the region of the blind hole, and with a sealing of the Information storage that includes the fastener.

Under a seal is present in this case

Understand arrangement that can not be solved nondestructively and seals the information storage against the environment. Through the seal will

for example, prevents that when the

Valve section is immersed in a liquid medium, this liquid medium can get to the information store.

Such a valve section is known for example from WO 9910673 AI. According to the teaching of WO 9910673 AI, the seal by the use of a

Epoxy resin, which is an adhesive achieved.

A problem with such valve sections is that the use of adhesive does have sealing properties

ensures, however, that such a valve is not suitable for all applications. For example, in the medical or food sector, certain

Requirements placed on the materials used in the valves. Moreover, the materials used in the valves must be able to withstand cleaning with aggressive media. This is not guaranteed in the valve sections known from the prior art in sufficient form.

Object of the present invention is therefore to provide a valve portion which can be used flexibly and, in particular with aggressive media, cleanable and at the same time a contactless readable

Information store, which is attached to the valve portion.

This object is achieved by a valve section according to

Claim 1 solved. Preferred embodiments of the valve section according to the invention can be found in the

Subclaims and the description below.

The valve section according to the invention is characterized in that the seal is executed without adhesive. This has the advantage that, while retaining the full functionality of the valve, the negative effects of using an adhesive are avoided. For example, in the valve section according to the invention there is no outgassing of solvents of the adhesive. Another advantage is that in the

Valve section according to the invention, the seal can be used directly after assembly and no curing time is required for the adhesive used. Such a valve is both after the "cleaning-in-place" and after the

"Sterilization-in-place" process can be cleaned or sterilized.

An adhesive is to be understood as a process material which is used for bonding various materials

is used. According to the definition, which can also be found in DIN EN923, an adhesive is therefore one

Non-metallic material, the parts to be joined

Adhesion and internal strength (cohesion) can connect. If in the present context

is claimed that the sealant is free of adhesive, but this does not mean that in the area of the seal and / or the information carrier at any point

Adhesive, either in the classic sense or

for example, as potting material, may be present. Rather, this means that the main effect of

Sealing is achieved by a measure other than by the use of adhesive.

The object of the invention is also by a

Valve section according to claim 2, wherein this is characterized in that a sealing effect of the seal in any case in part by a force-locking clamping of the fastener element via a clamping element in the blind hole is created. As a result, for example, the information storage in a simple manner by removing the fastener and the

Clamping element are removed without residue, whereby the reusability of the valve section is ensured.

Advantageously, the contactless readable comprises

Information store in the just mentioned

Embodiments of the invention an RFID chip. RFID chips are available as low-cost mass products, which keeps the manufacturing costs for the valve section low.

In a preferred embodiment, the

Fastening element PTFE, wherein it is particularly advantageous if the fastener is made of PTFE. PTFE (polytetrafluoroethylene) is an unbranched, linearly structured, partially crystalline polymer of fluorine and

Carbon. PTFE is extremely inert and can withstand even the most aggressive chemicals. Acids, bases and solvents do not affect the structural integrity of a fastener made using PTFE. The use of PTFE for the fastener has the further advantage that there are almost no materials that adhere to PTFE, since PTFE is very difficult to wet and hardly glued.

In an advantageous embodiment, the fastening element is pot-shaped. By that is meant that

Fastening element has a bottom portion which opens into a wall portion. The wall portion is circumferential and protrudes from the bottom portion so as to have at least an extension in a direction orthogonal to the bottom portion, preferably in the direction to the bottom Floor section orthogonal direction runs. It is particularly advantageous if the bottom section in

Is substantially circular in shape and the wall at the outer periphery of the circular bottom portion extends orthogonal with a likewise circular outer contour away from the bottom portion. By means of such a shaping, the fastening element can be advantageously introduced into a blind hole which is easy to manufacture or to be produced in the valve section. As a result, the valve portion according to the invention can be produced in a cost effective manner. It is particularly advantageous if at the end remote from the bottom portion of the wall, a tapered insertion section is provided. As a result, the introduction of the

Fastening element simplified in the blind hole.

It is particularly preferred if the

Fastening element is clamped by a clamping element in the blind hole. This represents a structurally simple but efficient variant of a seal. In this case, the clamping element is clamped in such a way in the fastener and blind hole that a non-destructive removal of the

Fastening element, or at least the clamping element of the fastener, is not possible and at the same time the sealing function of the seal is ensured. It is particularly advantageous if the seal comprises that the fastener on the

Clamping element in the blind hole non-positively, in particular form-fitting, ie without positive rear grip, is braced. As a result, the seal can be produced in a simple manner in the blind hole. Also, such a seal does not require a complicated introduction of a blind hole, which requires a positive rear grip. Advantageously, the clamping element is spherical

educated. By a spherical clamping element manufacturing inaccuracies in the fastener, which is advantageously carried out pot-shaped in this embodiment as described above, be compensated.

As a result, the entire seal by a simple to produce fastener and a simple

realized clamping element realized.

The tensioning element comprises an elastomer, in particular FPM, preferably consists of the elastomer, in particular FPM, advantageously comprises an elastomer, in particular FPM. It is particularly preferred if the clamping element consists of the elastomer, in particular FPM. FPM stands for fluorinated rubber or fluorocarbon rubber. FPM is characterized by excellent resistance to high temperatures, ozone, oxygen, mineral oils,

synthetic hydraulic fluids, fuels, aromatics, as well as many organic solvents and chemicals. FPM has a low gas permeability, resulting in

advantageous effect on the tightness of the seal. Resistance to the just mentioned

Chemicals allow aggressive cleaning of the

Valve section, which is advantageous in terms of use for hygiene critical applications.

In a preferred embodiment, the

Information store on the clamping element in the

Attached fastener. In a cup-shaped

Fastener may be the information store

for example, between the clamping element and the

Bottom portion of the fastener to be jammed. This is a reliable placement of

Information Store ensures what the Reliability in reading the information memory increases because the information store is placed at an externally recognizable location.

The valve portion according to the invention according to the plane

described embodiments also has the advantage that, if the information store is no longer

is functional, the sealed information store can be easily removed and replaced or resealed using a tool without damaging the valve section or disposing of it. In particular, in seals that are performed with adhesive, the problem arises that the

Adhesive can not be removed in a simple manner or residues of the adhesive adhere to the valve section, so that initially a complex preparation of

Valve section is necessary before a new sealed information storage can be arranged on the valve portion.

The present invention is also a valve, preferably a diaphragm valve, with the

Valve element according to one of the just described

Embodiments.

Other features, applications and advantages of the invention will become apparent from the following description of exemplary embodiments of the invention, which are explained with reference to the drawing, wherein the features both alone and in different combinations may be important for the invention without being explicitly referred to again becomes. Show it: 1 shows a valve with a valve portion according to the invention in a perspective view;

Figure 2 is a side view of the valve of Figure 1;

Figure 3 is a plan view of the valve of Figures 1 and 2;

Figure 4 is a sectional view of the valve of Figures 1 to 3; and

FIG. 5 shows a detailed representation of the region V from FIG. 4.

Figures 1 to 3 show a valve 10. The valve 10 includes a valve portion 12, which is presently designed as a valve housing 14. The valve housing 14 comprises a seal 16 of a not visible in the illustration of Figure 1 and therefore there indicated only by an arrow information memory 18. Der

Information memory 18 is designed to be contactless readable. In the present embodiment, the contactless readable information memory 18 is made of an RFID chip. The RFID chip 18 is used for recording and playback of

Information concerning the valve 10. In other words, the RFID chip 18 is used for the detection or the reading and reading of valve data and in particular their transmission by means of a mobile, in particular portable, operating device. The seal 16 is in

Connection with Figures 5 and 6 will be explained in more detail.

On the valve 10 is an end portion 24 of a

Valve piston 26 visible. On one end portion 24 opposite side of the valve 10, the valve 10 has a Medienzuführleitung 32 and a Medienabführleitung 34. Via the media supply line 32, an inflowing medium 36 to be switched to the valve 10 can be fed. Via the Medienabführleitung 34 is a draining medium to be switched 38 from the valve 10 can be discharged.

In Figure 4, the valve 10 is shown in a sectional view taken along the line IV-IV of Figure 3. As can be seen in FIG. 4, a piston plate 44 is arranged on the piston 26. About the piston head of the piston 26 is biased by a spring 46 in a closed position, not shown in Figure 4. At an end of the piston 26 opposite the end portion 24 of the piston 26, a connecting member 48 is attached to the piston 26. About the connecting element 48 of the piston 26 with a

Valve element 50 connected. The valve element 50 is in the present case designed as a membrane 52.

In the position shown in Figure 4, the valve 26 is in an open operating position. In the open

Operating position, the membrane 52 is pulled along an opening direction shown by a corresponding arrow 54 of the piston 26 in Figure 4 upwards. The membrane 52 opposite a valve seat 56 is arranged. When the valve 26 closes, the membrane 52 is opposite

Moving direction 54 of the piston 26 moves downward in Figure 4 and the diaphragm 52 seals against the valve seat 56 from. A supply-side media chamber 60 is then separated from a discharge-side media chamber 62. In the illustration shown in FIG. 4, the supply-side media chamber 60 and the discharge-side media chamber 62 are connected to one another. An area indicated by V in FIG. 4 is shown in FIG. 5 i detail. From the representation shown in Figure 5 it can be seen that the seal 16 a

Fastening element 66, for example made of PTFE. The seal 16 further includes a tension member 68 made of an elastic material, for example, fluorocarbon rubber. The

Fastener 66 is pot-shaped in the present case

educated. It has a circular bottom section 7, from which a circumferential wall section 74 extends away in an orthogonal, continuous direction 72.

The fastening element 66 is in a in FIG. 5

shown installation position in a blind hole 76, which in the present case has a circular cross-section and is introduced into an outer wall 90 of the valve housing 14. The arrangement of clamping element 68 and

Fastener 66 forms the seal 16 for the information memory 18. The operation of the

Seal 16 will be explained in more detail with reference to FIG.

The fastening element 66 has an outer dimension 80 and an inner dimension 82. The blind hole 76 has an inner dimension 84. The inner dimension 84 of the blind hole 76 is preferably

slightly smaller than the outer dimension 80 of the

Fastening element 66. The tensioning element 68 has an outer dimension 86. The outer dimension 86 of the clamping element 68 is slightly larger than the inner dimension 82 of the

Fastening element 66.

Hereinafter, the mode of operation of the seal 16

described. In the installed position, the fastening element 66 is clamped by a press fit in the blind hole 76. The interference fit of the fastener 66 firstly stirs Therefore, that the outer dimension 80 of the fastener 66 is greater than the inner dimension 84 of the blind hole 76. On the other hand is characterized in that the outer dimension 86 of the

Clamping element 68 is greater than the inner dimension 82 of the

Fastener 66, the wall portion 74 of

Fastener 66 locally widened. As a result, the fastening element 66 is clamped in the blind hole 76.

The clamping element 68 also serves to the

Store information store 18 in the fastener 66. This is achieved by the

Information store between the clamping element 68 and the bottom portion 70 of the fastener 66 is jammed. In summary, that can be said

Fixing element 66 is braced in the blind hole 76 due to its own size and the size of the clamping element 68 inextricably. A removal of the seal 16 from the blind hole 76 is not possible without the seal 16 is destroyed. In this case, the fastening element 66 closes in the installed position flush with the outer wall 90 of the

Valve housing 12 from. This will be an unwanted

Damage to the seal 16 avoided.

The following is the assembly of the seal 16

or the information memory 18 in the

Fastener 66 described. To produce the seal 16, the information store 18 is first inserted into the fastening element 66 in such a way that the information store rests against the bottom section 70. Following the placement of the information storage, the clamping element 68 is in the fastener 66th

introduced. In this case, the clamping element 68 in the

Fastener 66 are pressed, since the outer dimension 86 of the clamping element 68 is greater than the inner dimension 80 of Fastening element 66. When the clamping element 68 rests against the information memory 18 or these against the

Bottom portion 70 presses, the clamping element 68 is in the desired position for assembly. Of the

Information memory 18 is then immovably held in the fastening element 66 by the clamping element 68, which is clamped by a press fit in the fastening element 66, and in this respect fixed.

The fastener 66 is then inserted into the blind hole 76 in advance with the "opening" sealed by the tensioning member 68 and disposed therein

Information Store 18 and the strained therein

Clamping element 68 pressed into the blind hole 76 until the

Bottom portion 70 flush with the outer wall 90 of the

Valve housing 14 closes. Pressing in the

Fastener 66 in the blind hole 76 is possible in a simple manner, since a front edge 92 of the

Fastener 66 with a tapered

Insertion section 94 is formed.

When inserting the cup-shaped fastening element 66 into the blind hole 76, it may also be that the clamping element 68 is further "striped" through the opening edge of the blind hole 76 in the direction of the bottom portion 70, whereby the RFID chip 18 even better between clamping element 68 and

Floor section 70 is clamped.

Claims

claims

1. Valve section (12), in particular a valve housing (14) or a valve drive, with a blind hole (76), a contactless readable information memory (18) for receiving and reproducing the valve (10)

relevant information, a fastening element (66), by means of which the information memory (18) in the region of the blind hole (76) is arranged, and with a seal (16) of the information memory

(18), which comprises the fastening element (66),

characterized in that the seal (16) is executed without adhesive.

2. Valve section (12), in particular a valve housing (14) or a valve drive, with a blind hole (76), a contactless readable information memory (18) for receiving and reproducing the valve (10)

(18), which comprises the fastening element (66),

characterized in that the seal (16) is a non-positive tension of the

Fastening element (66) in the blind hole (76).

3. Valve section according to claim 1 or 2, characterized

characterized in that the contactless readable

Information store comprises an RFID chip (18).

4. Valve section according to claim 1, 2 or 3, characterized

in that the fastening element (66) comprises PTFE, preferably made of PTFE.

5. Valve section according to one of claims 1 or 2 and / or a plurality of the preceding claims 3 and 4, characterized in that the

Fixing element (66) is pot-shaped.

6. Valve section according to one of claims 1 or 2

and / or one or more of the foregoing

Claims 3 to 5, characterized in that the fastening element (66) via a clamping element (68) in the blind hole (76), preferably non-positively, in particular form-fitting, is braced.

7. Valve section according to claim 6, characterized

characterized in that the tensioning element (68) is spherical.

8. Valve section according to claim 6 or 7, characterized

characterized in that the clamping element (68) a

Elastomer, in particular FPM, comprises, preferably of the elastomer, in particular FPM consists.

9. Valve section according to one or more of claims 6 to 8, characterized in that the

Information store (18) via the clamping element (68) in the fastening element (66) is attached.

10. Valve (10), preferably a diaphragm valve, with the valve portion (12) according to one of the preceding claims.