A kind of pvc polymerizer
Technical field
The utility model provides the polymeric kettle that is used for chemosynthesis of chemical machinery field, specifically a kind of pvc polymerizer.
Background technology
Before the utility model proposes, pvc polymerizer is made of kettle, agitator and loading, unloading material mouth.Kettle is provided with tabular watercooling jacket, is used for the thermal exchange of polyvinyl chloride polymerization process, guarantees polymeric reaction temperature.On stir shaft, be provided with the straight-plate-type agitating vane, be used for the stirring of polymkeric substance, guarantee the abundant contact of reaction mass, polyreaction is carried out.Stir shaft is installed on the power motor in the kettle outside, is used to provide stirring power.Stir shaft is the solid metal body.The flow deflector of entity is housed, the water conservancy diversion of material when being used to stir in kettle.
The shortcoming that existing pvc polymerizer exists is:
1. temperature condition required when the polyvinyl chloride material carries out polyreaction in polymeric kettle is finished by the water jacket that is located on the kettle merely, and the thermal conduction contact area is little, and conduction efficiency is low, and polymerization reaction time is long.
2. the blade of agitator is straight plate structure, and the agitating vane contact area is little, and Flow of Goods and Materials efficient is low, and speed of response is slow.
3. the flow deflector of entity can play the effect to the water conservancy diversion of material, but adjusting does not have positive effect to material temperature.
Summary of the invention
The utility model proposes a kind of pvc polymerizer of new texture.Its technical scheme is: be connected with bearing on kettle, on the kettle outer wall, be provided with semicircle pipe clamp cover, put at the semicircle pipe clamp and to be connected with water inlet pipe and water outlet pipe and following water inlet pipe and water outlet pipe, be provided with human body import and export and baiting valve down at autoclave body bottom, central position at autoclave body bottom is connected with frame, frame one end is connected with the kettle wall, the other end is connected with step-down gear, on step-down gear, be connected with stir shaft and agitator motor, the mechanical seal parts are installed in frame, stir shaft is installed on the base bearing, and base bearing is provided with water injection hole, and the swept-back agitating vane is installed on stir shaft.On the kettle wall of autoclave body bottom, interior cold apron is installed also, is provided with inner sleeve in the interior cold apron.Safety valve and spray valve and opening for feed are installed on kettle top, are provided with human body on kettle top and import and export, on inner wall of kettle, be provided with the electropolishing layer.
Advantage of the present utility model is as follows
1. owing to be provided with safety valve, help guaranteeing that polymeric kettle moves under the safe pressure state on kettle top.
2. owing to be provided with respectively in the upper and lower part of kettle that human body is imported and exported and following human body is imported and exported, help the installation of the maintenance of kettle inside and equipment and to the cleaning of kettle inside, the while also helps ventilation and the ventilation when work such as maintenance.
3. owing to spray valve has been installed, help to the inner spray of kettle material on kettle top.
4. because semicircle pipe clamp cover is installed on the kettle wall of kettle outside, help the kettle wall is carried out temperature regulation, guarantee polymeric reaction temperature.
5. owing to, help balance hydraulic pressure, guarantee the balance of the unimpeded and temperature of current being provided with water inlet pipe and water outlet pipe and following water inlet pipe and water outlet pipe on the semicircle pipe.
6. because interior cold apron is installed, and be provided with inner sleeve in it in kettle, can form water stream channel between interior cold apron and inner sleeve, what help current passes through and carries out heat exchange.
7. because stir shaft is installed in the bottom of kettle, help installation and removal.
8. owing to be provided with frame between kettle and step-down gear, the space mounting that helps within it has mechanical sealing element.
9. because the mechanical seal parts are installed, help the sealing of stir shaft between stir shaft and step-down gear.
10. because agitator motor is installed in the bottom of kettle, help I﹠M.
11. owing on stir shaft, be connected with the swept-back agitating vane, help abundant stirring, thereby improve polymerization rate to the polyreaction material.
12., help preventing material and inner wall of kettle bonding owing to be provided with the electropolishing layer on the inner wall of kettle surface.
13. owing on base bearing, be provided with water filling port, help water filling in still, also help the cooling of base bearing simultaneously.
Description of drawings
Fig. 1 is the utility model structure iron
Fig. 2 is the utility model semicircle pipe clamp cover cross-section structure
Fig. 3 is the utility model base bearing structure iron
Fig. 4 is a cold apron structure iron in the utility model
Among Fig. 1~Fig. 4,1. kettle, 2. bearing, 3. step-down gear, 4. agitator motor, 5. frame, 6. base bearing, 6A. water filling port, 7. mechanical seal parts, 8. stir shaft, 9. swept-back agitating vane, 10. in cold plate washer, 10A. inner sleeve, 11. baiting valves, 12. semicircle pipe clamp covers, 12A. tube chamber, 13. upper intake, 14. lower intakes, 15. times human bodies are imported and exported, and human body is imported and exported on 16., 17. spray valve, 18. opening for feeds, 19. safety valve.
Embodiment
According to structure and mode of connection shown in Fig. 1,2,3,4, its embodiment is as follows:
On the kettle wall in kettle 1 outside, be connected with bearing 2, be provided with semicircle pipe clamp cover 12 in the outside of kettle wall, put at the semicircle pipe clamp and be connected with upper intake 13 and lower intake 14, in semicircle pipe clamp cover, be provided with semicircular tube chamber 12A.On kettle top safety valve 19 is installed, on kettle top spray valve 17 is installed also, be provided with human body import and export 16 and opening for feed 18 on kettle top, be provided with human body import and export 15 down in the bottom of kettle, on the kettle wall of kettle bottom, also be provided with baiting valve 11, cold apron 10 in being equipped with on the kettle wall of kettle bottom is provided with inner sleeve 10A in interior cold apron.Central position at the kettle wall of kettle bottom is equipped with frame 5, and is connected with step-down gear 3, is connected with agitator motor 4 on step-down gear, and stir shaft 8 is installed on the step-down gear by base bearing 6, is provided with water filling port 6A on base bearing.Be provided with mechanical seal parts 7 in frame, stir shaft extend in the kettle and swept-back agitating vane 9 is installed.On inner wall of kettle, be provided with electropolishing layer 1A.
Parts are made and assembling instruction:
Kettle: the sidewall of making kettle with the curling mode of metal, make the upper and lower end cap of kettle with pressure-formed mode, the mode by welding is connected sidewall with end cap, constitute kettle 1, and by electropolishing inner wall of kettle is carried out electropolishing and handle, form electropolishing layer 1A.
Bearing: make bearing 2 with metal sheet by the mode of welding or by the mode of casting, and be connected with the outer wall of kettle.
Following human body is imported and exported and last human body is imported and exported: cover at the upper and lower end of kettle and establish opening respectively, and be provided with flap, constitute upper and lower human body import and export 16 and 15.
Spray valve: select to have the valve of valve body structure as spray valve 17.
Semicircle pipe clamp cover: through being processed on the outer wall that the pipe with semicircle tubular construction is wrapped in kettle, constitute semicircle pipe clamp cover 12 with pipe, in semicircle pipe clamp cover, be provided with semicircular tube chamber 12A.
Baiting valve: as baiting valve 11, be installed on the bottom kettle wall of kettle with valve with valve body structure.
Interior cold apron: as interior cold apron 10, be provided with inner sleeve 10A with pipe assembled arrangement within it, between interior cold apron and inner sleeve, form water stream channel with inner chamber.Interior cold apron is installed on the kettle wall of autoclave body bottom.
Frame: make frame 5, one ends with metal by the mode of welding or casting and be connected with the kettle wall of autoclave body bottom, the other end is connected with step-down gear.
Step-down gear: according to the rotating speed requirement of stir shaft, the step-down gear of selecting corresponding reduction ratio is as step-down gear 3.
Agitator motor: the electric motor of selecting to be complementary with step-down gear is installed on the step-down gear as agitator motor 4, and its power output shaft inserts axle with the power of step-down gear and is connected.
Mechanical seal parts: as sealing element 7, be installed in the diapire and the frame between the stir shaft of kettle by the mechanically-sealing apparatus of pressure friction structure.
Stir shaft: select the metal barred body to be processed into stir shaft 8, be installed in by base bearing 6 on the power output shaft of step-down gear, on base bearing, be provided with water filling port 6A by turning.
Swept-back agitating vane: adopt sheet metal to be processed into swept-back agitating vane 9, be installed on the stir shaft through blanking.Two-layer swept-back agitating vane is installed on stir shaft, and every layer is provided with three blades, and blade is the swept-back structure.