NO140718B - PROCEDURE FOR THE PREPARATION OF ALKALI METAL POLYPHOSPHATE COMPLEXES OF ALFA-6-DESOXY-5-HYDROXYTETRACYCLINE - Google Patents
PROCEDURE FOR THE PREPARATION OF ALKALI METAL POLYPHOSPHATE COMPLEXES OF ALFA-6-DESOXY-5-HYDROXYTETRACYCLINE Download PDFInfo
- Publication number
- NO140718B NO140718B NO3985/71A NO398571A NO140718B NO 140718 B NO140718 B NO 140718B NO 3985/71 A NO3985/71 A NO 3985/71A NO 398571 A NO398571 A NO 398571A NO 140718 B NO140718 B NO 140718B
- Authority
- NO
- Norway
- Prior art keywords
- ring
- valve
- sealing surface
- stated
- cone
- Prior art date
Links
- 229920000388 Polyphosphate Polymers 0.000 title 1
- 229910052783 alkali metal Inorganic materials 0.000 title 1
- 150000001340 alkali metals Chemical class 0.000 title 1
- 239000001205 polyphosphate Substances 0.000 title 1
- 235000011176 polyphosphates Nutrition 0.000 title 1
- 238000007789 sealing Methods 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 2
- 241000397426 Centroberyx lineatus Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/65—Tetracyclines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Medicinal Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Ventilpakning. Valve gasket.
Foreliggende oppfinnelse vedrører en ventilpakning for en reguleringsventil, spesielt med forhåndsinnstilling, fortrinnsvis for oppvarmingsanordninger. The present invention relates to a valve gasket for a control valve, especially with pre-setting, preferably for heating devices.
Reguleringsventiler med proporsjonalregulering er alminnelig kjent. Luknings-delen, som er anordnet på den nedre del av en spindel, åpner eller lukker gjennom-strømningsboringen i huset. En varme-måler som er anordnet på varmelegemet, registrerer de brukte varmeenheter for å vise de andelsmessige fyringsomkostnin-ger. Control valves with proportional control are generally known. The closing part, which is arranged on the lower part of a spindle, opens or closes the flow-through bore in the housing. A heat meter that is arranged on the heater registers the used heating units to show the proportional heating costs.
Foreliggende oppfinnelse vedrører videre en ventil med konusformet seteflate og en selvtettende O-ring, som ligger i et spor i tilslutning til ventilkonusen. Slike i og for seg kjente ventiler har den for-del at de tetter dobbelt, både ved hjelp av konusflaten og y2-ringen i sporet. Det er også kjent utførelser av slike ventiler, hvor O-ringen dessuten står under driftstrykk. The present invention further relates to a valve with a cone-shaped seating surface and a self-sealing O-ring, which lies in a groove adjacent to the valve cone. Such valves, known in and of themselves, have the advantage that they seal twice, both with the help of the cone surface and the y2 ring in the groove. There are also known versions of such valves, where the O-ring is also under operating pressure.
Overfor de kjente anordninger utmer-ker oppfinnelsen seg imidlertid ved føl-gende trekk: O-ringens ytre diameter er større enn den minste diameter av den konusformete tetningsflate av metall, hvorpå O-ringen glir ved lukning. Compared to the known devices, however, the invention is distinguished by the following features: The outer diameter of the O-ring is larger than the smallest diameter of the cone-shaped metal sealing surface, on which the O-ring slides when closing.
Ifølge et annet trekk har konusvinke-len en svak helning, fortrinnsvis på 15°, som fremmer O-ringens rensende virkning, når den glir på den metalliske tetningsflaten. According to another feature, the cone angle has a slight inclination, preferably of 15°, which promotes the cleaning effect of the O-ring, when it slides on the metallic sealing surface.
Fordelen ved oppfinnelsesgjenstanden i forhold til de kjente ventiler ligger spesielt i at det på grunn av O-ringens glidning på seteflaten ved ventilens lukning, auto-matisk skjer en rensing av husets metalliske seteflate ved hjelp av gummiringen. Avleiringer av fremmedlegemer som fore-ligger i oppvarmningsvannet i form av sveiseperler, rust, glødeskall m. v. og som vanligvis medfører skade på sete og gummipakning og kan hindre tett lukning, fjernes således før den metalliske tetningsflate kommer til anlegg. Utetthet på The advantage of the object of the invention in relation to the known valves lies particularly in the fact that, due to the sliding of the O-ring on the seat surface when the valve closes, the housing's metallic seat surface is automatically cleaned with the help of the rubber ring. Deposits of foreign bodies which are present in the heating water in the form of welding beads, rust, scale, etc. and which usually cause damage to the seat and rubber gasket and can prevent tight closure, are thus removed before the metallic sealing surface comes into contact. Leakage on
grunn av mangelfull rensing medfører ofte due to insufficient cleaning often results
at varmelegemet ikke kjølner, at varme-måleren, som er bestemt for de andelsmessige oppvarmningsomkostninger, teller that the heater does not cool, that the heat meter, which is determined for the shared heating costs, counts
videre og at dette således medfører økte oppvarmingsomkostninger. Ved anordnin-gen ifølge foreliggende oppfinnelse vil selv en skadet gummipakning sørge for upåklagelig metallisk avtetning. further and that this thus entails increased heating costs. With the device according to the present invention, even a damaged rubber gasket will ensure impeccable metallic sealing.
Ifølge ytterligere trekk ved oppfinnelsen er det foreslått å gi sporet som opptar O-ringen svalehaleform og anordne det i tilslutning til den metalliske konusformete tetningsflate. Utformingen av svale-halen er spesielt avhengig av driftstryk-kets høyde og gjennomstrømningsretnin-gen. I ethvert tilfelle skulle det derved sikres en upåklagelig montering av O-ringen samtidig som man unngår at ringen glir tilfeldig ut av sin stilling. According to further features of the invention, it is proposed to give the groove which occupies the O-ring a dovetail shape and arrange it in connection with the metallic cone-shaped sealing surface. The design of the swallow tail is particularly dependent on the height of the operating pressure and the flow direction. In any case, an impeccable installation of the O-ring should thereby be ensured while avoiding the ring accidentally slipping out of its position.
Spesielle fordeler med hensyn til selv-rensing oppnåes ifølge oppfinnelsen, når O-ringen' rager frem med 15 pst. av sin tverrsnittsdiameter i forhold til den indre kanten av den konusformete tetningsflate, hvor det svalehaleformete sporet går. Det vil dessuten være hensiktsmessig å benytte seg av en utforming, hvor det i tilslutning til svalehale-sporet anordnes en sylindrisk dei av iukningsstykket, som ved iukning gjør gjennomstrømningsåpningen smalere før O-ringen og den metalliske delen kommer til anlegg. Ved denne anordning kan det spesielt i samarbeid med den svake helningen av konusflaten oppnåes en me-get fin proporsjonalregulering. Special advantages with regard to self-cleaning are achieved according to the invention, when the O-ring protrudes by 15 percent of its cross-sectional diameter in relation to the inner edge of the cone-shaped sealing surface, where the dovetail-shaped groove runs. It would also be appropriate to use a design where a cylindrical part of the widening piece is arranged in connection with the dovetail groove, which when widened makes the flow opening narrower before the O-ring and the metallic part come into contact. With this device, especially in cooperation with the slight inclination of the cone surface, a very fine proportional regulation can be achieved.
Tegningen gjengir et utførelseseksem-pel av pakningen ifølge oppfinnelsen. De deler som ikke har interesse er utelatt, i tegningen, som bare viser ventilens sete-parti i åpen stilling til venstre og i lukket stilling til høyre. The drawing reproduces an embodiment of the seal according to the invention. The parts that are not of interest have been omitted, in the drawing, which only shows the seat part of the valve in the open position on the left and in the closed position on the right.
Reguleringsventilen har på spindelens nedre ende et lukningsstykke 1, som er for-synt med en gummipakning 2 for avtetning mot boringen i huset 3. The control valve has a closing piece 1 on the lower end of the spindle, which is provided with a rubber gasket 2 for sealing against the bore in the housing 3.
Under ventil-lukningsstykkets 1 tetningsflate 4 er det et svalehaleformet spor 6 som opptar gummipakningen 2. Når ventilen er lukket, vil gummipakningen 2, som ved hjelp av spindelens utøvede trykk presses mot den konusformede setebo-ringens 5 vegg, dessuten påvirkes av driftstrykket som virker nedenfra, hvor-ved det oppnåes absolutt tetthet mellom Iukningsstykket 1 og seteboringen. Under the sealing surface 4 of the valve closing piece 1, there is a dovetail-shaped groove 6 that accommodates the rubber gasket 2. When the valve is closed, the rubber gasket 2, which is pressed against the wall of the cone-shaped seat bore 5 by means of the pressure exerted by the spindle, will also be affected by the operating pressure that acts from below, whereby absolute tightness is achieved between the expansion piece 1 and the seat bore.
Gummiringen 2 vil under påvirkning av driftstrykket eventuelt også legge seg over en smal sprekk mellom lukningsstykkets 1 tetningsflate 4 og seteboringen 5, hvis det skulle være forurensninger på disse flater som hindrer tett anlegg mellom tetningsflaten 4 og seteboringen 5. Derved hindres med sikkerhet enhver gjen-nomstrømning av varmebæreren ved lukket ventil. Under the influence of the operating pressure, the rubber ring 2 will possibly also lie over a narrow crack between the sealing surface 4 of the closure piece 1 and the seat bore 5, if there should be contamination on these surfaces that prevents a tight fit between the sealing surface 4 and the seat bore 5. This prevents any re- normal flow of the heat carrier when the valve is closed.
Den selvrensende virkningen inntrer ved at O-ringen 2 rager frem i forhold til den indre tetningsflatekanten 4 på en slik måte at den ved lukning glir på ventillegemets motflate 5. Det vil herved være hensiktsmessig å la gummiringen med sin ytterkant, slik som vist til venstre i tegningen, begynne i begynnelsen av flaten 5, slik at denne med sikkerhet renses over hele sin lengde. Når ventilen, som vist til høyre på tegningen, er lukket, vil metall-flatene 4 og 5 ligge an mot hverandre og forårsake tetning som fordobles ved at O-ringen 2 presses mot dem. Det vil også fremgå av tegningen at O-ringen står under driftstrykk. The self-cleaning effect occurs when the O-ring 2 protrudes in relation to the inner sealing surface edge 4 in such a way that, when closed, it slides on the counter surface 5 of the valve body. It would therefore be appropriate to leave the rubber ring with its outer edge, as shown on the left in the drawing, start at the beginning of surface 5, so that it is safely cleaned over its entire length. When the valve, as shown on the right in the drawing, is closed, the metal surfaces 4 and 5 will lie against each other and cause a seal which is doubled by the O-ring 2 being pressed against them. It will also appear from the drawing that the O-ring is under operating pressure.
Lukningsstykkets del 7 bevirker sam-men med den koniske motflate 5 at det ved ventillegemets 1 opp-og-ned bevgelse inntrer en gradvis økning hhv. reduksjon av gj ennomstrømningstverrsnittet. Regule - ringen blir på denne måte spesielt nyan-sert, særlig på grunn av den svake helningen av flatens 5 konusvinkel. The part 7 of the closing piece, together with the conical counter surface 5, causes a gradual increase or reduction of the flow cross-section. In this way, the regulation is particularly nuanced, particularly due to the slight inclination of the cone angle of the surface 5.
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT5470870 | 1970-10-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
NO140718B true NO140718B (en) | 1979-07-16 |
NO140718C NO140718C (en) | 1979-10-24 |
Family
ID=20081722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO3985/71A NO140718C (en) | 1970-10-30 | 1971-10-27 | PROCEDURE FOR THE PREPARATION OF ALKALI METAL POLYPHOSPHATE COMPLEXES OF ALFA-6-DESOXY-5-HYDROXYTETRACYCLINE |
Country Status (18)
Country | Link |
---|---|
JP (2) | JPS5510576B1 (en) |
AT (2) | AT312166B (en) |
AU (2) | AU473909B2 (en) |
BE (2) | BE774717A (en) |
CA (2) | CA988081A (en) |
CH (2) | CH593239A5 (en) |
DE (2) | DE2152476A1 (en) |
DK (2) | DK152118C (en) |
ES (2) | ES396132A1 (en) |
FI (2) | FI54799C (en) |
FR (2) | FR2111952B1 (en) |
GB (1) | GB1463726A (en) |
HK (1) | HK79079A (en) |
IL (2) | IL38014A (en) |
NL (2) | NL152248B (en) |
NO (1) | NO140718C (en) |
SE (2) | SE380518B (en) |
ZA (2) | ZA717214B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES396132A1 (en) * | 1970-10-30 | 1972-12-01 | Villax | Complexes of a-6-deoxy-5-hydroxy tetracycline and their preparation |
GB1350196A (en) * | 1972-10-26 | 1974-04-18 | Pfizer | Doxycyline parenteral composition |
PT72107B (en) * | 1980-11-25 | 1981-10-28 | Joao Emerico Villax | PROCESS FOR PREPARING A WATER SOLUBLE COMPLEX OF ALPHA-6-DIOXI-5-HYDROXITETRACYCLINE AND DESODIUM TETRAMETAPHOSPHATE |
CN114276271A (en) * | 2021-11-22 | 2022-04-05 | 新乡医学院三全学院 | Method for preparing doxycycline hydrochloride solid powder with different granularities |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1068701B (en) * | 1959-11-12 | Bristol Laboratories Inc., East Syracuse, N. Y. (V. St. A.) | Process for the preparation of antibiotic tetracycline sodium hexametaphosphate | |
US3068264A (en) * | 1961-06-06 | 1962-12-11 | American Cyanamid Co | Tetracycline antibiotic-aluminumphosphoric acid complexes |
ES396132A1 (en) * | 1970-10-30 | 1972-12-01 | Villax | Complexes of a-6-deoxy-5-hydroxy tetracycline and their preparation |
-
1971
- 1971-10-19 ES ES396132A patent/ES396132A1/en not_active Expired
- 1971-10-21 DE DE19712152476 patent/DE2152476A1/en active Pending
- 1971-10-25 DK DK516671A patent/DK152118C/en not_active IP Right Cessation
- 1971-10-26 IL IL38014A patent/IL38014A/en unknown
- 1971-10-26 NL NL717114749A patent/NL152248B/en not_active IP Right Cessation
- 1971-10-26 SE SE7113551A patent/SE380518B/en unknown
- 1971-10-26 CH CH1558071A patent/CH593239A5/xx not_active IP Right Cessation
- 1971-10-27 NO NO3985/71A patent/NO140718C/en unknown
- 1971-10-27 CA CA126,250A patent/CA988081A/en not_active Expired
- 1971-10-27 FI FI3060/71A patent/FI54799C/en active
- 1971-10-28 ZA ZA717214A patent/ZA717214B/en unknown
- 1971-10-28 FR FR7138787A patent/FR2111952B1/fr not_active Expired
- 1971-10-29 BE BE774717A patent/BE774717A/en not_active IP Right Cessation
- 1971-10-30 JP JP8671171A patent/JPS5510576B1/ja active Pending
- 1971-11-01 AU AU35209/71A patent/AU473909B2/en not_active Expired
- 1971-11-02 AT AT09439/71A patent/AT312166B/en not_active IP Right Cessation
-
1974
- 1974-06-24 FI FI1919/74A patent/FI59789C/en active
- 1974-06-24 DK DK337274A patent/DK152119C/en not_active IP Right Cessation
- 1974-06-26 AU AU70520/74A patent/AU497158B2/en not_active Expired
- 1974-06-26 DE DE2430550A patent/DE2430550C2/en not_active Expired
- 1974-06-27 ES ES427715A patent/ES427715A2/en not_active Expired
- 1974-06-28 CA CA203,732A patent/CA1014552A/en not_active Expired
- 1974-06-28 ZA ZA00744181A patent/ZA744181B/en unknown
- 1974-06-28 GB GB2877374A patent/GB1463726A/en not_active Expired
- 1974-06-28 BE BE146061A patent/BE817063R/en active
- 1974-06-28 CH CH895274A patent/CH611875A5/en not_active IP Right Cessation
- 1974-06-28 IL IL45146A patent/IL45146A/en unknown
- 1974-06-28 FR FR7422640A patent/FR2282865A2/en active Granted
- 1974-06-28 AT AT540074A patent/AT332970B/en not_active IP Right Cessation
- 1974-07-01 SE SE7408685A patent/SE389333B/en not_active IP Right Cessation
- 1974-07-01 JP JP49075255A patent/JPS5745215B2/ja not_active Expired
- 1974-07-01 NL NL7408875A patent/NL7408875A/en not_active Application Discontinuation
-
1979
- 1979-11-15 HK HK790/79A patent/HK79079A/en unknown
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