CS224039B1

CS224039B1 - Combined pneumatic check valve

Info

Publication number: CS224039B1
Application number: CS333882A
Authority: CS
Inventors: Vlasislav Trcha
Original assignee: Vlasislav Trcha
Priority date: 1982-05-10
Filing date: 1982-05-10
Publication date: 1983-12-30

Description

Vynález sa týká kombinovaného pneumatického spatného ventila, pozostávajúceho z telesa, opatreného vstupným hrdlom, dalej priebežným axiálnym otvorom s ventilovým sedlom a guličkou na vstupnej straně a vnútorným závitom na výstupnej straně tohto priebežného axiálneho otvoru, do ktorého vnútorného závitu je naskrutkované uzatváracie puzdro guličky.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a combined pneumatic downstream valve comprising a body having an inlet throat, a through axial bore with a valve seat and a ball on the inlet side and an internal thread at the outlet side of the through axial bore.

Podía súčasného stavu techniky bývá spatný ventil konstruovaný tak, že prepúšťa tlakový vzduch len jedným smerom. Pri náraste tlakového vzduchu na výstupnej straně ventilu tento nemá možnost uniknúť. Tento problém je možné známými prostriedkami rieši t tak, že sa .ku spatnému ventilu přiradí napr. samostatný poistný ventil. Nevýhodou takéhoto usporiadania však je, že je celá ventilová sústava relativné nákladná.According to the state of the art, the non-return valve is designed in such a way that it only allows compressed air to pass in one direction. If there is a build-up of compressed air on the outlet side of the valve, this has no possibility to escape. This problem can be solved by known means by assigning e.g. separate safety valve. However, the disadvantage of such an arrangement is that the entire valve assembly is relatively expensive.

Podstatou vynálezu je, že uzatváracie puzdro guličky je vo svojej vysunutej časti opatrené kuželovou dosadacou plochou pre kuželové sedlo, vytvořené v upevňovacej prírube ventilu, opatrenej na jednej straně dutým nadstavcom, do ktorého je vsunuté teleso ventilu spolu s tlačnou pružinou, opretou jedným svojím koncom o osadenie na telese ventilu a druhým koncom o vnútornú stenu prevlečnej nastavovacej matice, naskrutkovacej na vonkajší závit duté2 ho nadstavca upevňovacej príruby, ktorá je na druhej straně opatřená dutou skrutkou. Prevlečná nastavovacia matica je na obvode jej centrálneho otvoru opatřená únikovými drážkami vzduchu.It is an object of the present invention to provide a ball bearing housing in its extended portion with a conical seat for a conical seat formed in a valve mounting flange provided on one side with a hollow adapter into which the valve body and the compression spring are supported. a fitting on the valve body and the other end on the inner wall of the union nut, screwed onto the external thread of the hollow flange attachment, which on the other hand is provided with a hollow screw. The union nut is provided with air escape grooves at the periphery of its central opening.

Výhodou kombinovaného pneumatického spatného ventilu podlá vynálezu je, že jeho mechanizmus je sústredený do jedného celku, ktorého výsledná zložitosť je menšia ako je súčet zložitosti spatného a poistného ventilu, čo sa podobné pozitivně prejavi aj na cene ventilu. S tým je spojený aj předpoklad menšej poruchovosti.An advantage of the combined pneumatic check valve according to the invention is that its mechanism is concentrated in one unit, the resulting complexity of which is less than the sum of the complexity of the check valve and the safety valve, which has a similar positive effect on the price of the valve. This is also associated with the assumption of a lower failure rate.

Příklad vyhotovenia kombinovaného pneumatického spatného ventilu je znázorněný na výkrese, na ktorom obr. 1 představuje osový rez ventilu upevněného v základovej doske lisovacieho nástroja a obr. 2 detailný rez uzatváracím puzdrom guličky.An exemplary embodiment of a combined pneumatic check valve is shown in the drawing, in which FIG. 1 is an axial sectional view of a valve mounted in a base plate of a die; and FIG. 2 is a detailed cross-sectional view of the ball cap sleeve.

Kombinovaný pneumatický spatný ventil pozostáva z telesa 1, opatreného vstupným hrdlom 2, vyhotoveným ako hadicová přípojka. Teleso 1 je ďalej opatřené priebežným axiálnym otvorom 3, s ventilovým sedlom 4 umiestneným vo vstupnej časti a guličkou 5 vloženou do dutiny 8 uzatváracieho puzdra 6 naskrutkovaného do vnútorného závitu telesa 1, ktorý je usporiadaný vo výstupnej časti telesa 1. Na tej straně dížky puzdra 6, kde sa nachádza gulička 5 je von224039 kajší priemer puzdra 6 zmenšený. V tejto časti sú v puzdre 6 vytvořené aj dva pozdížne zářezy 7, ktoré slúžia na obtok vzduchu okolo guličky 5 v případe, keď tlakový vzduch zo vstupného hrdla 2 překoná silu tlačnej pružiny 9 a vytlačí guličku S zo sedla 4. Na opačnej straně od guličky 5 vyúsťuje dutina 8 do otvoru 10. Vyčnievajúca časť puzdra 8 má vytvorenú radiálnu čelnú plochu 11, v ktorej je priečna drážka pre skrutkovač. Puzdro 6 sa do telesa 1 zaskrutkuje na doraz. Vyčnievajúca časť puzdra 8 je opatrená aj kuželovou dosadacou plochou 12 pre kuželové sedlo 13, vytvořené v upevňovacej prírube 14. Táto je na jednej straně opatřená dutým nadstavcom 15, do ktorého je vsunuté teleso 1 ventilu spolu s tlačnou pružinou 16, opretou jedným svojím koncom o osadenie 17 na telese 1 ventilu a druhým koncom o vnútornú stenu 18 nastavovacej matice 19, naskrutkovanej na vonkajší závit 20 dutého nadstavca 15 upevňovacej príruby 14. Nastavovacia matica 19 je převlečená cez teleso 1 ventilu a v jej centrálnom otvore sú vyfrézované únikové drážky 21 prebytočného vzduchu. Upevňovacia příruba 14 je na druhej straně opatřená dutou skrutkou 22, ktorou je celý ventil upevněný ku základovej doske 23 lisovacieho nástroja. Prietokový otvor 24 dutej skrutky 22 a prívodný kanál 25 spája ventil s pracovným priestorom 26, v ktorom sa pohybuje piest 27, ktorý je súčasťou spodného pridržiavača nástroja a zároveň plní funkciu vyhadzovača.The combined pneumatic check valve consists of a body 1, provided with an inlet neck 2, designed as a hose connection. The body 1 is further provided with a through axial bore 3, with a valve seat 4 located in the inlet part and a ball 5 inserted into the cavity 8 of the capsule 6 screwed into the internal thread of the body 1 which is arranged in the outlet part of the body 1. where the ball 5 is located, the outside diameter of the sleeve 6 is reduced. In this part, two longitudinal notches 7 are also formed in the housing 6, which serve to bypass the air around the ball 5 when the compressed air from the inlet neck 2 exceeds the force of the compression spring 9 and pushes the ball S out of the seat 4. 5, the cavity 8 opens into the opening 10. The protruding portion of the housing 8 has a radial end face 11 in which there is a transverse groove for the screwdriver. The housing 6 is screwed into the housing 1 as far as it will go. The protruding part of the housing 8 is also provided with a conical bearing surface 12 for a conical seat 13 formed in a fastening flange 14. This is provided on one side with a hollow extension 15 into which the valve body 1 is inserted together with a compression spring 16 supported by one end thereof. a shoulder 17 on the valve body 1 and the other end on the inner wall 18 of the adjusting nut 19 screwed onto the external thread 20 of the hollow extension 15 of the mounting flange 14. The adjusting nut 19 is slid over the valve body 1 and leak grooves 21 of excess air are milled in its central opening. The fastening flange 14, on the other hand, is provided with a hollow screw 22 by which the entire valve is fixed to the base plate 23 of the press tool. The flow hole 24 of the hollow screw 22 and the inlet duct 25 connect the valve to the working space 26 in which the piston 27, which is part of the lower tool retainer, moves while serving as an ejector.

Pracovný cyklus ventilu začína vtedy, keď je piest 27 v dolnej krajné) polohe. Vtedy tlakový vzduch zo zdroja, resp. rozvodného potrubia přejde vstupným hrdlom 2, premůže silu pružinky 9, odtlačí guličku 5 a přejde okolo nej cez zářezy 7 do dutiny 8 uzatváracieho puzdra 6 guličky 5, odtial cez otvor 10 puzdra 8, prietokový otvor 24 dutej skrutky 22 upevňovacej príruby 14, ako aj cez prívodný kanál 25 do pracovného priestoru 26 piesta 27. Tento sa v důsledku toho začne pohybovat smerom hoře. Keď piest 27 príde do hornej krajnej polohy, tlak v pracovnom priestore 26 sa vyrovná s tlakom v rozvodnom potrubí a gulička 5 ventila zapadne opáť do sedla 4. Keď započne lisovacia operáciá začne sa aj piest 27 presúvať smerom nadol, pričom tlak vzduchu v pracovnom priestore 27 narastá dovtedy, kým tlak na radiálu čelnú plochu 11 puzdra 8 nepřekoná silu tlačnej pružiny 16. Vtedy sa vysunie kuželová dosadacia plocha 12 puzdra 6 z kuželového sedla 13, čím sa přebytečnému tlakovému vzduchu umožní preniknúť cez únikové drážky 21 do atmosféry. Takto sa piest 27 dostane do svojej dolnej krajnej polohy a pracovný cyklus ventilu sa může opakovať. Prevlečnou nastavovacou maticou 19 možno nastaviť požadovaný tlak vzduchu v pracovnom priestore 26 piesta 27 pri jeho pohybe smerom dolu.The valve duty cycle begins when the piston 27 is in the lower limit position. Then the compressed air from the source resp. the manifold passes through the inlet orifice 2, overcomes the force of the spring 9, pushes the ball 5 and passes it through the notches 7 into the cavity 8 of the capsule 6 of the ball 5, from there through the hole 10 of the bushing 8, the flow hole 24 of the hollow screw 22 via the feed channel 25 to the working space 26 of the piston 27. This consequently starts to move upwards. When the piston 27 comes to the upper limit position, the pressure in the working space 26 is equal to the pressure in the manifold and the valve ball 5 snaps back into the seat 4. When the pressing operation begins, the piston 27 begins to move downwards, the air pressure in the working space 27 increases until the pressure on the radial face 11 of the housing 8 exceeds the force of the compression spring 16. At this time, the conical bearing surface 12 of the housing 6 is pulled out of the conical seat 13, allowing excess compressed air to penetrate the escape grooves 21 into the atmosphere. In this way, the piston 27 reaches its lower limit position and the duty cycle of the valve can be repeated. By means of the adjusting nut 19, the desired air pressure in the working space 26 of the piston 27 can be adjusted as it moves downwards.

Claims

224039 Case Diameter 6 Reduced. In this case, two notches 7 are provided in the housing 6, which serve to bypass the air of the ball S when the pressure air from the inlet port 2 overcomes the force spring 9 and pushes out the ball S from the seat 4. On the opposite side A cavity 8 opens into the opening 10 from the ball 3. The protruding part of the housing 6 has a radial face 11 in which a transverse groove is provided for the screwdriver. The housing 6 is screwed into the body 1 by a stop. The protruding portion of the housing 6 is also provided with a conical bearing surface 12 for a conical seat 13 formed in the mounting flange 14. This is provided on one side with a hollow extension 15 into which the valve body 1 is inserted together with the compression 16 supported by one of its cones. a mounting 17 on the valve body 1 and a second end of the inner wall 18 of the adjusting nut 19 screwed onto the external thread 20 of the hollow extension 15 of the mounting flange 14. The adjusting nut 19 is pulled through the valve body 1 and in it Excess air escape grooves 21 are milled into the central opening. On the other hand, the fastening flange 14 is provided with a hollow screw 22, which is the entire valve fixed to the base plate 23 of the press tool. The flow opening 24 of the hollow screw 22 and the inlet duct 25 connect the valve to the working space 26 in which the piston 27, which is part of the lower toolholder 4, moves and also functions as an ejector. The valve operating cycle starts when the piston 27 is in the lower limit position. In-pressurized air from the source, resp. the transfer pipe passes through the inlet orifice 2, whereby the force of the spring 9 is pushed out, the ball 5 is pushed out and passes over it through the notches 7 into the cavity 8 of the sealing sleeve 6 of the ball 5, the orifice 10 of the sleeve 6 is discharged, the flow opening 24 of the duo screw 22 of the fastening flange 14, as through the inlet duct 25, into the working space 26 of the piston 27. As a result, it starts to move upwardly. When the piston 27 comes to the upper limit position, the pressure of the working space 26 is equalized with the pressure in the manifold and the ball 5 retracts backwardly into the seat 4. When the start-up operation begins, the piston 27 also starts to slide downward, with the air pressure The working space 27 increases until the pressure on the radial face 11 of the housing 6 overcomes the force of the compression spring 16. At that time, the conical bearing surface 12 of the housing 6 protrudes out of the conical seat 13, allowing excessive pressure air to pass through the escape grooves 21 into the atmosphere. In this way, the piston 27 reaches its low end position and can repeat the valve operating cycle. By means of the adjusting nut 19, the desired air pressure in the working space 26 of the piston 27 can be adjusted by moving it downwards. OBJECT

Combined pneumatic poor vent, comprising a body provided with an inlet neck, a continuous axial opening with a valve seat and an inlet side ball, and an internal thread on the outlet side of the continuous axial opening into which a male ball screw housing with a tapered seating surface (12) for the tapered seat (13) formed in the valve mounting flange (14); provided on one side with a hollow extension (15), in which the valve body (1) of the valve with the compression spring (16) is supported by one end of the shoulder (17) on the valve body (1) and the other an end wall of the inner wall (18) of the sleeve adjusting nut (19) screwed onto the outer sleeve (20) of the hollow sleeve (15) of the fastening flange (14), which is on the other side provided with a taper u screw (22).

Combined pneumatic bad air outlet according to claim 1, characterized in that the drag adjusting nut (19) is provided with an air outlet groove (21) on its central opening. 1 sheet of drawings