CN2283669Y

CN2283669Y - Inlet head device of dryer

Info

Publication number: CN2283669Y
Application number: CN 96240188
Authority: CN
Inventors: 程永智
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-25
Filing date: 1996-09-25
Publication date: 1998-06-10
Anticipated expiration: 2006-09-25

Abstract

The utility model relates to an inlet head device for dryers, which is composed of a connecting shaft which rotates with the rotation of a drying cylinder and a fixed shell. The inlet head device for dryers is provided with a mechanical control sealing and centering system which has a self compensatory function inside. A flange can be replaced as required without regard for disclination. The arrangement of a steam pipe and a supporting sleeve reduces heat loss and mitigates the deflection deformation of a siphonic pipe. The shell is provided with a safety valve and an observation hole for avoiding unprofessional accidents. The threaded connecting form of a positioning and supporting system, a steam inlet pipe port and a water outlet pipe port can be easily assembled and disassembled, and adapts for both the rigid connection and the flexible connection.

Description

Drying cylinder admission head unit

The utility model is used for paper machine dryer admission drainage arrangement.

The admission head unit is the device that steam enters drying cylinder and condensed water discharge drying cylinder.Steam enters drying cylinder by the admission head, and the release heat oven dry is close to the l Water Paper of dryer surface; Condensed water enters siphon pipe and discharges outside the drying cylinder under steam pressure.

The admission head unit that present domestic paper industry uses mainly is " ZT " serial drying cylinder admission head unit of machinery office of Ministry of Light Industry in 1979 formulation, or " ZT " serial drying cylinder admission head unit of improvement shape, promptly, increase to three by two springs, or four root springs.Its sealing is between swivel coupling and anchor tip sealing block to be housed, and the compression spring housing is on stay bolt, and swivel coupling and anchor tip are under the effect of spring, and the crush seal piece is fitted mutually, and intention reaches sealing purpose.

And this drying cylinder admission head unit can not solve the steam leakage that takes place owing to sealing part abrasion at all when work.Itself does not just possess mechanical adjustment, self-compensating function this admission head unit.This is the essential defect of the present admission head unit that uses.In addition, adopt the spring more than two or two, regulate pressure with feel, the spring stuck phenomenon that causes with regard to occurring unbalance stress, moreover and the flange that connects of cylinder cap spindle nose end and admission head be one can only with the supporting use of a kind of drying cylinder of model; The 4th, siphon pipe one end connects with anchor tip, and the other end freely stretches in the drying cylinder, arm length, and deflection deformation is big, adds that the impulsive force that produces when the water ring that condenses is destroyed often causes that siphon pipe termination and casing wall bump, and causes turning round of siphon pipe joint bad; The 5th, the steam that enters drying cylinder admission head is in direct contact with an admission inwall, and heat is outwards conduction directly, has reduced the heat that leads to drying cylinder; The 6th, steam inlet pipe and drainpipe adopt form of flanges externally to connect, and only adapt to be used for rigidity (steel pipe) connection; The 7th, the admission head unit does not have the positioning support system, the location is installed can only leans on steam inlet pipe, and drainpipe is located and supported, the installation of incompatibility multi-cylinder paper machine; The 8th, the admission head unit is not provided with safety device, thereby has the superpressure use to cause drying cylinder blast example; The 9th, to be a part externally connect with the form of flange for steam inlet pipe, drainpipe and housing, complex-shaped, makes difficulty; The tenth, the big heaviness of this admission head unit body, function are few, whole admission head will be unloaded just and can carry out during renewal part, and be extremely inconvenient.

At above-mentioned situation, many useful explorations have all been made by national many factories, but fail fundamentally systematically to deal with problems.

The utility model is exactly the problem that existing admission head unit is existed, and provides a kind of sealing, security, the admission head unit that adaptability is more perfect.

It is made up of the connecting shaft part and the fixing housing parts that rotate.Two ball face sealing seats are housed on the connecting shaft, and ball face sealing seat outer end is two sealing rings, and the inner is the spring that a dish compresses; The connecting shaft outside is a housing, and it is steam pipe that peep hole, the inside are arranged on the housing; Flange on the connecting shaft is that the form with key connects with connecting shaft, can change as required, and not consider the rotation direction of drying cylinder.Bonnet is respectively equipped with admission opening, osculum, adjustable opposite opened positioning support frame and the safety valve of screw thread.Total, compact simple, easily make.Easy and simple to handle during work.

The measure that the utility model is taked is: two spheric seatings are contained on the rotating connecting shaft, and the centre is the spring that a dish compresses, and formation sealing, the certering system of ball face sealing circle loaded onto at two ends respectively.The ball face sealing seat of front is a tight fit on the connecting shaft, mainly plays centering; The ball face sealing seat of back under the spring pressure effect, along with the mobile backward mechanical adjustment self-compensating that plays a part of the wearing and tearing of sealing ring, keeps concentricity simultaneously automatically; Flange and connecting shaft are by the pattern of taking key connecting; Set up a steam pipe, load onto the splicing sleeve of stationary siphon in the steam pipe termination, supporting siphon pipe and stretching in the drying cylinder, after making that simultaneously steam passes through steam inlet pipe, between steam pipe and drainpipe, enter drying cylinder, directly do not contact, the heat conduction takes place with an admission wall; The admission mouth of pipe and the draining mouth of pipe are taked the thread connection pattern; On the bonnet, set up adjustable opposite opened positioning support frame, and safety valve; Add peep hole on the housing.During design,, fully take into account assembling and operation convenience based on technology.Admission, drainage system is made up of bonnet and reducing elbow, has optimized design of part.

Owing to taked above measure, overall structure has following advantage: the sealing, the certering system that adopt two ball face sealing seats and two sealing rings and a dish spring to form, good seal performance, positioning accuracy height, really has mechanical adjustment, the function of automatic compensation sealing part surface abrasion; Take a dish spring, stressed even, the spring stuck phenomenon can not appear; Flange and connecting shaft are taked key connecting, by changing the flange of different size, a kind of admission head of specification goes for the drying cylinder of different size, increased versatility, and overcome west advanced country, because of taking spiral marking connection, specification drying cylinder of the same race, the also necessary problem of considering rotation direction when exchanging the admission head unit; Be installed in the splicing sleeve on the steam pipe termination, strengthened siphonal rigidity, make the siphon pipe deflection deformation little, reduced the possibility of turning round bad siphon pipe joint; Steam enters drying cylinder along steam pipe, has reduced heat loss; Steam hole and osculum are made screw thread, by selecting the bushing of different inner diameters for use, regulate admission, the long-pending size of drainage channel cross sections, go for the needs of different size drying cylinder.Simultaneously, also be applicable to connect with the rigidity (steel pipe) of steam inlet pipe, drainpipe or flexible (metal hose) connects, enlarged the scope of application of admission head; Adjustable opposite opened positioning support frame upper end connects with cross bar, and the lower end connects with the admission head, and spacing can make location, the simple installation of admission head by the adjusting nut adjustment each other, particularly is used in many drying cylinders paper machine, has more superiority; Safety valve on the bonnet, its operating pressure is mated with the rated operating pressure of the drying cylinder that matches, and when superpressure was used, safety valve was opened, and let out the vapour step-down automatically, and the accident that prevents takes place; The peep hole that is provided with on the housing is discharged the admission head endoceliac hot-air of back cover that is heated, and simultaneously, can be directly acquainted with the sealing situation of admission head by the steam phenomenon of overflowing or releasing from the hole; In addition, this admission head unit volume is little, in light weight, manufacturing is easy, cost is low.

Below by drawings and Examples utility model is described in further detail:

Accompanying drawing is an embodiment cut-open view of final assembly of the present utility model.

Among the figure, what admission pore, draining pore were externally taked is that rigidity (steel pipe) connects, (do not add bushing, change admission, the cross-sectional area of drainpipe passage).During work, after steam enters the admission head along steam inlet pipe, and between steam pipe (11) and siphon pipe (14), enter drying cylinder, the condensed water of steam, through siphon pipe (14), different outside elbow (17) is discharged drying cylinder under the steam pressure effect; When the steam pressure of input admission head had surpassed the rated pressure of the safety valve (1) on the bonnet (2), safety valve (1) was with regard to releasing pressure automatically.Connecting shaft (10), flange (12) ball face sealing seat (5), (8), sealing ring (4), (9), spring (6) and " O " type rubber seal (16) constitute the sealing certering system, spring (6) compressing ball face sealing seat (5) fits with sealing ring (4), sealing ring (4) is when wearing and tearing at work, the pressure of spring (6) forces outside the ball face sealing seat (5) and moves, all the time fit with sealing ring (4), produce sealing effectiveness.Ball face sealing seat (8) and connecting shaft (10) tight fit, the power of outwards doing under the spring pressure effect guarantee system's concentricity in sealing ring (9) centering effect.When sealing system lost efficacy, steam was just along entering between connecting shaft (10) steam pipe (11) in housing (3) chamber, and released from peep hole (7), and the operator can both be found at any time.Flange (12) is connected with connecting shaft (10) by key (13), as required, does not consider the rotation direction of drying cylinder, can change the flange (12) of different size, to adapt to the drying cylinder of different size.The splicing sleeve (15) that is fixed on the steam pipe (11) makes siphon pipe (14) that individual supporting-point be arranged in drying cylinder, strengthens the rigidity of siphon pipe (14), has reduced the deflection deformation in the work.When the location is installed, by rotation adjusting nut (19), the centre-height that can change the adjustable opposite opened positioning support frame (18) that cross bar (20) is installed satisfies installation requirement, convenient simple and direct, be specially adapted to the installation location of steam inlet pipe, drainpipe flexibility (metal hose) connection, and the drying cylinder of in a row work to be located several or the installation together of dozens of admission head unit string with a long cross bar (20).

Claims

1, a kind of drying cylinder admission head unit is made up of the rotating part of rotation and fixing housing parts, its feature have in: its stationary housing partly also is provided with safety valve (1), and adjustable opposite opened positioning support frame (18) has a peep hole (7) on the shell (3); There is a steam pipe (11) to pass through in the rotating part, a splicing sleeve (15) is arranged on the steam pipe (11).

2, drying cylinder admission head unit as claimed in claim 1, it is characterized in that: its rotating part is by ball face sealing seat (5), (8), spring (6), connecting shaft (10), " O " type rubber seal (16) is formed, and fit with sealing ring (4), (9), connecting shaft (10) leans on key (13) to connect with flange (12).

3, drying cylinder admission head unit as claimed in claim 1 is characterized in that: water discharge outlet, the air intake of its stationary housing part are hickeys, and reducing elbow (17) is arranged.