CN202209444U - Sanitary-level ball overhead valve - Google Patents

Abstract

The utility model relates to the fields of pharmacy, foods, fine chemistry and the like and discloses a sanitary-level ball overhead valve which can control a feed/discharge hole and a pipeline of a sealed container for vacuum drying, pressure filtration and mixing and separating operations on powder materials which have high requirements on cleanliness of finished products. In the sanitary-level ball overhead valve, a hollow inflatable seal ring is embedded in a connecting flange, the section of the seal ring is a combination of a rectangle and a trapezoid, and the seal ring is connected with a pneumatic valve outside the sanitary-level ball overhead valve through a channel in the connecting flange. When the spherical surface of a valve core moves for opening or closing, or after the sanitary-level ball overhead valve is closed, the pneumatic valve controls the seal surface to be subjected to 0-0.1mm concave or convex deformation when the seal ring is in contact with the valve core. The sanitary-level ball overhead valve utilizes power gases to control the deformation of a seal interface of the seal ring, so that a seal pair can realize contactless movement, the minimum friction leads the abrasion to tend to zero, so as to primarily solve the problem in the fields of pharmacy, foods, fine chemistry and the like that foreign matters drop and pollute materials caused by the valve in the production process, and the sanitary-level ball overhead valve fills up a blank in national sanitary-level ball overhead valves.

Description

Health level ball overhead-valve

Technical field the utility model relates to fields such as pharmacy, food, fine chemistry industry, has the powder material of high requirement to carry out a kind of health level ball overhead-valve of feed inlet and outlet and pipeline control of the seal container of vacuum drying, pressure filtration, mixing discrete job to the finished product cleanliness.

Background technique is before the utility model, and the seal ring of ball overhead-valve is the solid construction that gathers tetrafluoro, and sealing is leaned on hard sphere to push, force seal ring in the face of the pressure of seal ring and produced the microcosmic resiliently deformable, makes the seal interface form constant specific contact pressure and realizes.When valve switch, when two surface of contact have relative movement; Must cause abrasion; The abrasion chip comes off and impels the foreign substance pollution material, has satisfied not fields such as pharmacy, food, fine chemistry industry, will reach the requirement of health grade standard to the high powder material of finished product cleanliness.

Summary of the invention is to overcome ball overhead-valve seal ring in the existing technology to be prone to the material pollution problem that causes the abrasion chip to come off and cause; The utility model will design a kind of ball overhead-valve of health level, to satisfy the requirement of fields such as pharmacy, food, fine chemistry industry to processing high-cleanness, high material.For realizing above-mentioned purpose; The valve body, spool, seal ring, connecting flange, rotating mechanism, driving mechanism, the health sterilization system that have comprised prior art in the design proposal of the utility model health level ball overhead-valve; The seal ring of in connecting flange, inlaying is that to be rectangle combine hollow inflatable seal circle with trapezoidal in a cross section; Seal ring is connected through the pneumatic valve of the outside sealing gas charging system of passage in the connecting flange and valve; Close at the spool sphere, open when moving or behind the valve closing, the sealing surface that pneumatic valve control seal ring contacts with spool has recessed or protruding distortion.The utility model health level ball overhead-valve changes the solid seal ring in the prior art into hollow gas control structure, utilizes power gas to control the microdeformation of seal ring seal interface.The spool sphere closes, opens when moving; Negative pressure (vacuum) gas forces the sealing surface that the gathers polytetrafluoroethylsealed sealed circle contraction that concaves, and breaks away from the spool sphere, and sealing pair is realized contactless motion; What the minimizing of friction made that abrasion becomes is zero, has fundamentally got rid of because of foreign matter to come off to the pollution of material.Behind the valve closing, malleation (inflation) forces that the sealing surface of seal ring is protruding to expand to seal ring is outside, fits tightly with spool sphere specific contact pressure on request, forms sealing.The utility model health level ball overhead-valve has solved fields such as puzzlement China medicine, food, fine chemistry industry; The foreign matter difficult problem of contaminated material that comes off in the production process that causes because of valve; Its enforcement will promote further developing of the high-accuracy drying of China, mixing, filter plant, replenish a blank of domestic health level ball overhead-valve.

Description of drawings Fig. 1, be the structural representation of the utility model health level ball overhead-valve.Fig. 2, be the enlarged diagram of seal ring 3 among Fig. 1.

Embodiment has further understanding for the structure to the utility model health level ball overhead-valve; Following in conjunction with detailed description of the drawings: with reference to accompanying drawing 1,2; The structure of this health level ball overhead-valve has comprised the valve body 1 of sphere among the figure; Be located at the spool 2 of V-type sphere in the valve body 1, an end of spool 2 is fastenedly connected with the live axle that is contained in valve body 1 one side drive mechanisms 6, and the other end semiaxis is connecting the rotating mechanism 5 that is made up of Sealing and bearing; Driving mechanism 6 provides the driving torque of spool 2, makes can the rotate axis swing of actuation mechanism 5 of spool 2., be inlaid with to use and gather its cross section that PTFE processes and combine hollow inflatable seal circle 3 with trapezoidal through in the bolted connecting flange 4 at valve body 1 top as rectangle.Seal ring 3 is connected through the pneumatic valve 8 of the sealing gas charging system that passage in the connecting flange 4 and valve outside are provided with; Close at spool 2 spheres, open when moving or behind the valve closing, the sealing surface that pneumatic valve 8 control seal rings 3 contact with spool 2 has the recessed or protruding distortion of 0-0.1mm.On valve body 1, also be provided with disinfecting disinfection system 7.

Claims (1)

1. health level ball overhead-valve; It includes valve body (1), spool (2), seal ring (3), connecting flange (4), rotating mechanism (5), driving mechanism (6), health sterilization system (7); It is characterized in that the seal ring of in connecting flange (4), inlaying (3) is that to be rectangle combine hollow inflatable seal circle with trapezoidal in a cross section; Seal ring (3) is connected through the pneumatic valve (8) of the outside sealing gas charging system of passage in the connecting flange (4) and valve; In spool (2) sphere pass, when opening motion or behind the valve closing, pneumatic valve (8) control seal ring (3) has recessed or protruding distortion with the sealing surface that spool (2) contacts.

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