CN207016032U - Rotary seal valve - Google Patents

Abstract

The utility model provide it is a kind of can be achieved respectively to grow tobacco, the bulk material such as Chinese herbal medicine continuous feeding and discharging, maintenance easy to maintain, reliable and stable rotary seal valve between different pressures and the region of temperature, it includes housing, rotor assembly, bearing, drive sprocket etc.；The rotor assembly includes main shaft, star rotor body, radial seal, axial seal, and radial seal is provided with radial seal compensation device, including taper sliding sleeve, fore-set, push rod；The taper sliding sleeve is set between star rotor body and main shaft, and is slidably connected with main shaft；One end of fore-set contacts with the bottom of radial seal, and the other end at the top of taper sliding sleeve with being in contact；Push rod is connected with the bottom of taper sliding sleeve；When radial seal produces abrasion, push rod promotes the sliding of taper sliding sleeve, and conical surface of the fore-set along taper sliding sleeve moves and act on radial seal bottom, radial seal is kept sealing.The utility model rotary seal valve realizes free disengaging of the material in different pressures and temperature range, and the shortcomings of sealing effectiveness present in existing various rotary seal valves is poor, automatic compensation performance is poor, radial seal abrasion can not prompt to change in time is overcome, can meet that processing respectively grows tobacco and the materiel machining needs such as Chinese herbal medicine.

Description

Rotary seal valve

Technical field

It the utility model is related to one kind bulk material is back to back between different pressures and temperature machining area The equipment of material, specifically a kind of rotary seal valve.

Background technology

Rotary seal valve is the indispensable equipment of the processing industries such as cigarette, Chinese medicine, food, is made in cigarette manufacturing With rotary seal valve, tobacco can enter in the process equipment with pressure and higher temperature from normal pressure (equally can also Into in negative pressure region), the aesthetic quality of tobacco can be effectively improved, applies equally to Chinese herbal medicine high temperature high pressure process, Chinese herbal medicine High temperature high pressure process pipeline is entered by rotary seal valve in normal pressure, discharged again by rotary seal valve after processing.Above-mentioned In production process, pressure and temperature in equipment are remained, this just needs the rotary seal valve with good seal performance To ensure.

At present, in order to adapt to the industry process equipment such as needs, China tobacco, the Chinese herbal medicine enterprise of modern processing, pin Rotary seal valve is also being constantly brought forth new ideas, such as：

Chinese patent CN200720044702.5, which discloses one kind, can realize radial seal and axial seal, and structure simultaneously Simple rotary sealing feeding valve, its star rotor for including the valve casing provided with feed inlet and outlet and being arranged on valve casing intracavitary, star The disc top of rotor is equiped with radial clearance autocompensation installation, is mended automatically provided with axial gap on the outside of the side plate of star rotor Repay device.By setting axial gap autocompensation installation and radial clearance automatic respectively in star rotor side plate and disc item end Compensation device, can effectively solve feed valve seal failure caused by the clamping stagnation of swivel feeding valve, and temperature change possibility.

Chinese patent CN200810211215.2 discloses a kind of rotary sealing feeding valve, including valve casing, symmetrically arranged Space between side flange and valve casing is divided into multiple enclosed volume storehouses lattice by side flange and star rotor, the star rotor, Pressure drop pressure balance port and pressure boost balance port are provided with valve casing.The utility model in discharge end by setting up depressurization outlet Pressurized outlet is added with feeding end, it is using the pressure differential of both sides storehouse lattice, the high pressure gas containing working media of discharge end is straight Connect and import in the storehouse lattice of feeding side, the recycling rate of machining medium can be improved, and make pressure rise in feeding warehouse lattice, reduce Container is processed because of pressure oscillation caused by feeding warehouse.

Chinese patent 200710017317.6 discloses a kind of high-temperature and high-pressure wheeled continuous feeding airlock system, including one Individual casing, the casing are formed by a cylinder and two end caps via bolt flange connection.Cylinder top opens up feeding mouth, bottom Discharging opening is opened up, and is respectively welded feeding mouth flange and discharging opening flange.Runner is installed, the runner is by uniformly dividing in casing The runner piece of cloth and the baffle plate circle piece on both sides are welded in rotating shaft and formed, and runner piece and baffle plate circle piece are also welded to each other one Rise, expanded letter friction plate is installed at the top of runner piece, with the friction sealed linear sealing (such as scraper plate sealing) instead of conventional product in face, from And end part seal ability is greatly improved, significantly reduce leakage rate.

Although above-mentioned rotary valve has been innovated and improved in structure design, still had in production application The problem of many, including：The radial clearance of rotary valve compensates automatically to be realized by the multiple springs being arranged on below sealing strip, just Phase, apex sealing strip abrasion was also very big, and with the abrasion of sealing strip, compression spring increases therewith in use, spring force is larger, its Spring force also decreases, meanwhile, substantial amounts of fine dust enters in the spring below apex sealing strip, the ash being deposited in spring Dirt, which also has a strong impact on, causes spring performance, so above-mentioned automatic compensation function can only maintain the shorter time, sealing effectiveness is increasingly It is deteriorated.At present, the method for solution is exactly all to change sealing strip and spring, and which increase equipment maintenance cost, also increases equipment The maintenance and repair time, equipment service efficiency reduce.In addition, existing rotary seal valve can not adjust sealing in use Performance, it is impossible in time prompting change sealing strip, easily cause cause because sealing property is low the energy (such as：Steam etc.) waste, Also hidden danger is brought to stablize safety in production.

Utility model content

The problem of the utility model is deposited for above-mentioned prior art, there is provided a kind of good seal performance, radial seal by Power is uniform and can stablize the rotary seal valve that realize radial seal compensation.

Rotary seal valve described in the utility model, including housing, rotor assembly, bearing and drive sprocket；The housing Upper and lower opening flange is that rotor assembly is fixed on into housing center of circular hole water with bearing into and out of material mouth, the side flange of housing two Prosposition is put；Drive sprocket rotor driven assembly rotating operation, material pass through from into and out of material mouth.

The rotor assembly includes main shaft, star rotor body, radial seal, axial seal, wherein：Radial seal It is provided with radial seal compensation device.

The radial seal compensation device includes taper sliding sleeve, fore-set, pushes away post, push rod, wherein：Taper sliding sleeve is set in star Between shape rotor block and main shaft, and it is slidably connected with main shaft；One end of fore-set contacts with the bottom of radial seal, the other end with It is in contact at the top of taper sliding sleeve；Push rod is connected with the bottom of taper sliding sleeve；When radial seal produces abrasion, push rod pushes away Mantle shape sliding sleeve slides, and conical surface of the fore-set along taper sliding sleeve moves and act on radial seal bottom, makes radial seal Part keeps sealing.

The utility model, as radial seal compensation device, is set using taper sliding sleeve system by the taper surface of taper sliding sleeve Put, the acting force of the spring of axial direction be converted into the radial forces that fore-set supports radial seal bottom, effectively realize continue it is steady Fixed radial seal compensation.

The utility model can use following preferred structure scheme：

Elongated slot is opened up in the upper end of each cut-off blade of star rotor body, radial seal is plugged in elongated slot； In the bottom of elongated slot, several through holes are set；Fore-set is inserted in each through hole, its one end and the radial seal being plugged in elongated slot Bottom contact, the other end is in contact with the taper surface lower curtate of taper sliding sleeve.

Spindle hole is set along the axis center of main shaft, in the spindle hole towards taper sliding sleeve bottom side successively Installation and adjustment spring tension screw rod, spring and push away post；A radial direction slotted eye is opened up adjacent to the position of taper sliding sleeve bottom in main shaft, The push rod is connected with radial direction slotted eye with the bottom of taper sliding sleeve through pushing away post.

When taking the structure, spring tension screw rod can be adjusted according to rotary seal valve sealing effectiveness, make spring effect to pushing away Post and push rod, drive the movement of taper sliding sleeve, and fore-set is moved up by low by the taper surface of taper sliding sleeve and is applied to radial seal On the stainless steel base of part, so as to effectively realize the compensation adjustment of radial seal.Meanwhile plant elongated slot using in radial seal Bottom sets several through holes, and fore-set inserts each through hole, and the compensation adjustment part such as spring and spring tension screw rod may be contained within leading Structure in axis center hole, the sealing compensation regulating member of existing rotary seal valve is effectively prevent because in material bin lattice And easily enter dust accumulation and cause compensation to fail.

In order to while ensuring that radial seal compensates validity, save sealing strip repair and replacement cost, cone as much as possible The taper total height of shape sliding sleeve is adapted to sealing strip wear height.

In addition, in order to fully ensure that security that equipment uses, set radially in the spindle hole of drive end side Prompting bar is changed in sealing, and the radial seal is changed prompting bar one end and is fixedly connected with push rod, and the other end is extended to outside spindle end. The radial seal is changed prompting bar and can be used cooperatively with proximity switch or limit switch.

While taper sliding sleeve moves, prompting bar synchronizing moving therewith is changed in radial seal；When fore-set is by taper sliding sleeve Taper lower curtate along bore it is domatic move up, when will reach cone top part, from drive end it is radially extending sealing change prompting bar Contact limit switch or close proximity to switch etc. detection switch when, prompt change radial seal signal be shown in control display On screen, to remind administrative staff to arrange related maintenance work.

In addition, in order to which sealing strip replacing is convenient, maintenance cost is saved, the radial seal includes stainless steel pedestal and gathered Tetrafluoroethene material sealing strip；Polytetrafluoroethylmaterial material sealing strip is plugged in stainless steel pedestal, is combined into one and detachable Component.Stainless steel pedestal is it is also ensured that radial seal sealing strip is indeformable and uniform force.It is of course also possible to according to setting The specific requirement of standby operating temperature, changes other types of encapsulant.

The side ring, side seal ring, side that the axial seal includes being arranged between housing and star rotor body side surface are close Seal ring holddown spring；Star rotor body is connected with side ring；Side ring and side seal ring wedge-like engagement, in side seal ring holddown spring Under effect, the side seal ring closely knit pressing in side ring surface with star rotor body both sides all the time, it is ensured that its sealing property.

Similarly, axial seal adjusting screw rod can be set on the outside of side seal ring holddown spring, by adjusting axial seal Adjusting screw rod come realize axial seal adjust.

In addition, main shaft sealing device is installed on the side flange of main shaft two, including main shaft seal ring and main shaft seal precompressed bullet Spring, main shaft seal ring is compressed by main shaft seal pre-compressed spring and realizes main shaft seal.

To avoid star rotor body from influenceing the stable realization of above-mentioned radial seal compensation because pressure difference produces axial float, Several independent axial passages are provided with the star rotor body, to keep the pressure of both sides air chamber under working condition to put down Weighing apparatus.

Relative to the various rotary seal valves used at present, the utility model has advantages below:When good seal performance, Radial seal uniform force, radial seal compensation are continual and steady；Second, can actively implement sealing property regulation in device external, And life-span automatic prompting function is may wear to radial seal, make equipment operation more reliable and stable；Third, device structure is tight Gather, beneficial to the installation on corollary equipment or reequip, and maintenance easy to maintain.

Brief description of the drawings

Fig. 1 is the utility model general structure schematic diagram；

Fig. 2 is the sectional view of the K-K lines along Fig. 1；

Fig. 3 is the utility model rotor assembly structural representation；

Fig. 4 is radial seal exploded view；

Fig. 5 is that taper sliding sleeve moves schematic diagram with fore-set.

In figure：1 ﹑ rotor assemblies；2 ﹑ housings；3 ﹑ side seal rings；4 ﹑ side seal ring holddown springs；5 ﹑ shaft seals；6 ﹑ Rolling bearing units；7 ﹑ adjust spring tension screw rod；8 ﹑ springs；9 ﹑ push away post；10th, push rod；11 ﹑ taper sliding sleeves；12 ﹑ radial seals； 13 ﹑ fore-sets；14 ﹑ side rings；15 ﹑ main shafts；Prompting bar is changed in 16 ﹑ radial seals；17 ﹑ drive sprockets；18th, flange；19th, charging aperture； 20th, discharging opening；21st, star rotor body；22nd, axial passage；23rd, teflon seal bar；24th, stainless steel pedestal.

Embodiment

As shown in figure 1, rotary seal valve described in the utility model includes rotor assembly 1, housing 2, two side flanges 18 with driving Movable sprocket 17 etc..Housing 2 is welded by bar section of stainless steel and steel plate, and its two side flange 18 and rolling bearing units 6 are total by rotor The center of circular hole horizontal level of housing 2 is fixed on into 1, the upper and lower opening flange of housing is charging aperture 19 and discharging opening 20.Slowing down Under machine effect, the rotor driven assembly 1 of drive sprocket 17 rotates smoothly operation, and material passes through from into and out of material mouth.

As shown in figure 3, rotor assembly includes main shaft 15, star rotor body 21, radial seal 12, axial seal and footpath To air tightness compensation arrangement.

Radial seal compensation device therein include taper sliding sleeve 11, regulation spring tension screw rod 7, spring 8, push away post 9 and Fore-set 13, as shown in figure 3, taper sliding sleeve 11 is set between star rotor body 21 and main shaft 15, and is slidably connected with main shaft 15, Star rotor body and side ring bolt connection, then be connected by the key on drive end side ring 14 with main shaft 15.Star rotor body it is every The upper end of individual cut-off blade opens up elongated slot, and radial seal 12 is plugged in elongated slot；In the bottom of elongated slot, several are set Through hole, fore-set 13 is installed in each through hole, the one end of fore-set 13 contacts with the bottom for the radial seal 12 being plugged in elongated slot, separately One end is in contact with the taper surface lower curtate of taper sliding sleeve 11.Main shaft 15 sets spindle hole, towards taper sliding sleeve bottom one Installation and adjustment spring tension screw rod 7, spring 8 and post 9 is pushed away in the spindle hole of side successively；In main shaft adjacent to taper sliding sleeve bottom Position open up a radial direction slotted eye, push rod 10 is through pushing away post 9 and radial direction slotted eye is connected with the bottom of taper sliding sleeve 11.It is above-mentioned Radial direction slotted eye axially has certain length along main shaft, and enough taper sliding sleeves 11 can slide along main shaft and realize that radial seal compensates.

As shown in figure 5, when radial seal 12 produces abrasion, push rod 10 under the action of the spring, promotes taper sliding sleeve 11 Sliding, conical surface of the fore-set 13 along taper sliding sleeve, moved up mobile and acted on the bottom of radial seal 12 by low, made Radial seal remains sealing.

In addition, as shown in figure 5, the taper total height h of taper sliding sleeve and sealing strip can to wear total height roughly equal, so Sealing strip can be made full use of while ensureing effectively to realize radial seal compensation.Meanwhile as shown in Figure 1,3, in main shaft 15 In the spindle hole of drive end side, penetrate radial seal and change prompting bar 16, radial seal prompting one end of bar 16 and push rod 10 are fixedly connected, and the other end is extended to outside spindle end.Radial seal is changed prompting bar 16 and matched somebody with somebody with proximity switch or limit switch Close and use.When taper sliding sleeve 11 moves, prompting bar 16 synchronizing moving therewith is changed in radial seal, when fore-set 13 is by taper sliding sleeve 11 taper lower curtate is moved up along cone is domatic, and when will reach cone top part, prompting is changed from the radially extending sealing of drive end When bar contacts the detection switch such as limit switch, the signal for prompting to change radial seal is shown in control display screen, to remind Administrative staff arrange related maintenance work.

As shown in Figure 1,3, axial seal include side ring 14, side seal ring 3, side seal ring holddown spring 4, side ring 14 with Star rotor body 21 connects.Side ring 14 and the wedge-like engagement of side seal ring 3, in the presence of side seal ring holddown spring 4, side seal The closely knit pressing in side ring surface with the both sides of star rotor body 21 all the time of ring 3, it is ensured that its lateral seal performance.Meanwhile in side seal ring The settable axial seal adjusting screw rod in the outside of holddown spring 4, realize that axial seal is adjusted by adjusting axial seal adjusting screw rod It is whole.

As shown in figure 1, installing shaft seal 5 in the flange 18 of star rotor body both sides respectively, shaft seal 5 includes Main shaft seal ring and main shaft pre-compressed spring, further to keep pressure and temperature in rotary seal valve.

As shown in Fig. 2 being provided with some independent axial passages 22 on star rotor body 21, made by axial passage The pressure balance of the both sides air chamber of star rotor body 21, star rotor body is avoided to produce axial float because of pressure difference.

As shown in figure 4, radial seal 12 be made up of teflon seal bar 23 with stainless steel pedestal 24 it is removable Component is unloaded, teflon seal bar 23 is plugged on stainless steel pedestal 24.The demountable structure of the plug-in type, facilitates sealing strip Change, stainless steel pedestal can ensure that radial seal sealing strip is indeformable and uniform force, and reusable.Such as Fig. 4 institutes Show, teflon seal bar 23 sets the tongue and groove of mutual cooperation with stainless steel pedestal 24 respectively in corresponding plug-in position Mouthful, it is ensured that grafting is more firm.

The course of work of the present utility model is as follows：After equipment completes installation positioning, the complete of the upper flange 18 of housing 2 is first checked for Whether portion's bolt fastener fastens in place, rolling bearing units 6 whether grease up, start motor for speed reducer after normal, pass through drive The empty wagons of 17 rotor driven assembly of movable sprocket 1 runs more than ten minutes, starts to start production model after equipment is normal.By belt conveyer scale Flow controls the material of constant flow rate, is typically fallen on star rotor body 21 by entering charging aperture 19, material in atmospheric pressure state and is separated V Shape sky is every inner, and with rotary motion of the rotor assembly 1 in housing 2, material is by the radial seal 12 on star rotor body 21 Some equal portions are divided into, then enter HTHP regional processing by discharging opening 20.

During equipment use, according to rotary seal valve sealing effectiveness, regulation spring tension spiral shell 7 is can adjust, makes spring 8 It is applied to and pushes away post 9 and push rod 10, push rod 10 drives taper sliding sleeve 11 to move, and fore-set 13 is by the conical surface of taper sliding sleeve 11 by low Move up and be applied on the stainless steel pedestal 24 of radial seal 12, stainless steel pedestal 24 is together with teflon seal 23 move up, and wear space to offset teflon seal bar 23, realize the regulation compensation of radial seal.

Have contemplated that the taper total height h (see Fig. 5) of taper sliding sleeve 11 is equal with sealing strip wear height in the design, so, While taper sliding sleeve 11 moves, prompting bar 16 also synchronizing moving therewith is changed in the radial seal that is connected with push rod 10, works as top Post 13 is moved up by the taper surface lower curtate of taper sliding sleeve 11 along cone slope, and (half a day or one can also be used when will reach cone top part Its time), i.e., when sealing strip i.e. will be completely worn out, contacted from the radially extending sealing replacing prompting bar 16 of spindle hole spacing The detection switch such as switch, you can remind and carry out sealing strip repair and replacement work.

In a word, the utility model rotary seal valve, which solves conventional radial seal, to stablize the problem of adjustment, and prolongs The service life of radial seal has been grown, has also solved the problems, such as that radial seal abrasion is unable to early warning, structure design Du in place Dust enters inside rotor assembly absolutely, improves the stability of adjustment structure, is produced for stability and security and provides Reliable guarantee.

Claims (10)

1. a kind of rotary seal valve, including housing, rotor assembly, bearing and drive sprocket；The rotor assembly includes main shaft, star Shape rotor block, radial seal, axial seal, wherein：Radial seal is provided with radial seal compensation device；Its feature exists In：The radial seal compensation device includes taper sliding sleeve, fore-set, push rod, wherein：Taper sliding sleeve be set in star rotor body with Between main shaft, and it is slidably connected with main shaft；One end of fore-set contacts with the bottom of radial seal, the other end and taper sliding sleeve Taper surface lower curtate is in contact；Push rod is connected with the bottom of taper sliding sleeve；When radial seal produces abrasion, push rod promotes cone Shape sliding sleeve slides, and place moves and acts on radial seal bottom taper surface of the fore-set along taper sliding sleeve from low to high, makes radially Seal keeps sealing.

2. rotary seal valve according to claim 1, it is characterised in that：Star rotor body each cut-off blade it is upper End opens up elongated slot, and radial seal is plugged in elongated slot；Several through holes are set in the bottom of elongated slot, and fore-set insertion is each to lead to In hole；Spindle hole is set along the axis center of main shaft, pacified successively in the spindle hole towards taper sliding sleeve bottom side Adjustment section spring tension screw rod, spring and push away post；In main shaft a radial direction slotted eye, institute are opened up adjacent to the position of taper sliding sleeve bottom State push rod and be connected with radial direction slotted eye with the bottom of taper sliding sleeve through pushing away post；By adjusting spring tension screw rod, make spring Use and push away post and push rod, push rod drives the movement of taper sliding sleeve, and fore-set is moved up and acted on by low by the taper surface of taper sliding sleeve To radial seal.

3. rotary seal valve according to claim 2, it is characterised in that：Set in the spindle hole of drive end side Prompting bar is changed in radial seal, and the radial seal is changed prompting bar one end and is fixedly connected with push rod, and the other end extends to spindle end Head is outer.

4. rotary seal valve according to claim 3, it is characterised in that：The radial seal is changed prompting bar and opened with close Close or limit switch coordinates.

5. rotary seal valve according to claim 1 or 2, it is characterised in that：The taper total height of taper sliding sleeve and sealing Bar wear height is adapted to.

6. rotary seal valve according to claim 1 or 2, it is characterised in that：The radial seal is by polytetrafluoroethyl-ne The detachable member of alkene sealing strip and stainless steel pedestal composition, teflon seal bar are plugged in stainless steel pedestal.

7. according to the rotary seal valve described in claim 1,2,3 or 4, it is characterised in that：The axial seal include side ring, Side seal ring, side seal ring holddown spring；Star rotor body is connected with side ring；Side ring and side seal ring wedge-like engagement, it is close in side In the presence of seal ring holddown spring, the closely knit pressing in side ring surface with star rotor body both sides all the time of side seal ring.

8. rotary seal valve according to claim 7, it is characterised in that：Set axially on the outside of side seal ring holddown spring Adjusting screw rod is sealed, realizes that axial seal adjusts by adjusting axial seal adjusting screw rod.

9. according to the rotary seal valve described in claim 1,2,3 or 4, it is characterised in that：Master is installed on the side flange of main shaft two Shaft sealer, including main shaft seal ring and main shaft seal pre-compressed spring.

10. rotary seal valve according to claim 1, it is characterised in that：Several are provided with the star rotor body Independent axial passage.