Volumetric metering two-stage forced side feeder structure

Abstract

The utility model discloses a volumetric metering double-stage forced side feeder structure, comprising a lower-stage feeder, a blanking body and an upper-stage feeder; the upper-stage feeder comprises an upper-stage feeder gearbox, a drive shaft I component, a stirring paddle component, an A output shaft component, a B output shaft component and a reduction motor I; the lower-stage feeder comprises a lower-stage feeder gearbox, a drive shaft II component, an A output shaft component, a B output shaft component and a reduction motor II; the feeder structure adopts a superimposed combined structure of an upper-stage feeder and a lower-stage feeder, and can continuously feed powdery materials, materials with poor fluidity and containing a certain amount of water, short fiber materials, starch-modified materials and the like into a barrel lateral feed port of a twin-screw extruder or a single-screw extruder in a volumetric metering manner, so as to avoid the phenomenon of material spraying at the feed port caused by discontinuity, unevenness and water vapor in the materials.

Description

Technical Field

[0001] The utility model relates to a screw extruder, in particular to a volumetric metering double-stage forced side feeder structure. Background Art

[0002] In the production process of conveying, melting and mixing polymer materials by co-rotating parallel twin-screw extruder or single-screw extruder, determining the feeding method according to the physical properties of polymer materials is the key link to improve the output and product quality. For powdery materials, materials with poor fluidity and a certain amount of water, short fiber materials, starch-modified materials, etc., a special feeder structure is required to feed the above materials continuously and evenly from the feed port of the co-rotating parallel twin-screw extruder or single-screw extruder into its barrel to avoid discontinuity, unevenness and water vapor in the materials at the feed port, resulting in the phenomenon of material spraying at the feed port. Summary of the invention

[0003] Purpose of the utility model: The purpose of the utility model is to provide a volumetric metering two-stage forced side feeder structure to avoid the phenomenon of material spraying at the feed port due to discontinuous and uneven feeding amount and water vapor during the feeding process of the above-mentioned materials.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A volumetric metering two-stage forced side feeder structure, comprising a lower-stage feeder, a material drop body, and an upper-stage feeder;

[0006] The upper-stage feeder gearbox of the upper-stage feeder is provided with a drive shaft I, which includes a drive shaft I, on which a stirring drive gear and a driving gear are installed, and the rear end of the drive shaft I is connected to the output shaft of the reduction motor I, and the upper part of the stirring drive gear is meshed with the lower part of the stirring gear composed of the stirring paddle;

[0007] The stirring gear composed of the stirring paddle is connected to the stirring paddle shaft, the locking nut fixes the stirring gear on the stirring paddle shaft, the stirring paddle is installed at the front end of the stirring paddle shaft, and the front part of the stirring paddle shaft extends into the feeding pot body through the rear end through hole of the feeding pot body;

[0008] The upper-stage feeder gearbox is provided with an A output shaft component and a B output shaft component. The A output shaft of the A output shaft component and the B output shaft of the B output shaft component in the upper-stage feeder gearbox are installed in parallel below the drive shaft I component. The upper part of the A-axis gear of the A output shaft and the upper part of the B-axis gear of the B output shaft are respectively meshed with the lower part of the drive gear installed on the drive shaft I. The A-axis hook key head of the A output shaft and the B-axis hook key head of the B output shaft are respectively connected to the tail end hook key grooves of two upper-stage feeding screws meshing at 90°.

[0009] The front flange of the reduction motor I is connected to the rear end face of the upper-stage feeder gearbox, the bottom of the upper-stage feeder gearbox is fixedly installed on the upper-stage feeder bottom plate, the top flange of the feeding pot body is connected to the bottom flange of the hopper, the bottom of the feeding pot body is fixedly installed on the upper-stage feeder bottom plate, the stirring blade is installed in the feeding pot body, the rear end flange of the upper-stage feeding barrel is connected to the front end face of the bottom of the feeding pot body, the middle flange of the upper-stage feeding barrel is connected to the upper opening of the blanking body, and the two upper-stage feeding screws are meshed and installed in parallel in the upper-stage feeding barrel and the bottom of the feeding pot body at 90 degrees;

[0010] A drive shaft II component is arranged in the gear box of the lower-stage feeder, and the drive shaft II component includes a drive shaft II, a drive gear is installed on the drive shaft II, and a rear end of the drive shaft II is connected to an output shaft of a reduction motor II;

[0011] The gear box of the lower-stage feeder is provided with an A output shaft component and a B output shaft component. The A output shaft of the A output shaft component and the B output shaft of the B output shaft component in the gear box of the lower-stage feeder are installed in parallel below the drive shaft II component. The upper part of the A-axis gear of the A output shaft and the upper part of the B-axis gear of the B output shaft are respectively meshed with the lower part of the drive gear installed on the drive shaft II. The A-axis hook key head of the A output shaft and the B-axis hook key head of the B output shaft are respectively connected to the tail end hook key grooves of two lower-stage feeding screws meshing at 90 degrees.

[0012] The front flange of the reduction motor II is connected to the rear end face of the gearbox of the lower-stage feeder. The bottom of the gearbox of the lower-stage feeder is fixedly installed on the bottom plate of the lower-stage feeder. The lower-stage feeding barrel is fixedly installed on the bottom plate of the lower-stage feeder. The front flange of the lower-stage feeding barrel is connected to the side feed port of the barrel of the co-directional parallel twin-screw extruder or single-screw extruder. A cooling water channel is arranged in the barrel wall at the front of the lower-stage feeding barrel. The feed port of the lower-stage feeding barrel is connected to the lower end flange of the blanking body. Two lower-stage feeding screws are installed in parallel in the lower-stage feeding barrel at 90° meshing.

[0013] Furthermore, deep groove ball bearings II and III are installed at the front and rear ends of the drive shafts I and II respectively, and the deep groove ball bearings II and III are fixedly installed at corresponding mounting holes of the upper-stage feeder gearbox and the lower-stage feeder gearbox.

[0014] Furthermore, a brass sleeve is connected to the middle part of the stirring paddle shaft, and a deep groove ball bearing I is fixedly installed on the ball bearing mounting seat at the tail end of the stirring paddle shaft. The brass sleeve and the deep groove ball bearing I are respectively fixedly installed at the corresponding mounting holes of the upper-stage feeder gear box, and the stirring paddle shaft is supported by the brass sleeve and the deep groove ball bearing I.

[0015] Furthermore, deep groove ball bearings IV are installed at the front of the A output shaft and the B output shaft, and tapered roller bearings are installed at the rear ends of the A output shaft and the B output shaft. The deep groove ball bearings IV and the tapered roller bearings are respectively fixedly installed at the corresponding mounting holes of the upper-stage feeder gear box and the lower-stage feeder gear box.

[0016] Furthermore, skeleton oil seals are respectively arranged at the front of the A output shaft and the B output shaft in the upper-stage feeder gear box, and the pressure cover I is connected to the front end face of the upper-stage feeder gear box.

[0017] Furthermore, a sealing ring is provided between the rear end through hole of the feeding pot body and the front part of the stirring paddle shaft, and a sealing gland I is connected and installed at the rear end through hole of the feeding pot body to fix the sealing ring;

[0018] The rear end surface of the bottom of the feeding pot body is connected to the plugging sleeve, and polytetrafluoroethylene sealing rings are respectively arranged inside the plugging sleeve and between the tails of the two upper-stage feeding screws. The sealing gland II is connected to the plugging sleeve by screws to fix the polytetrafluoroethylene sealing ring.

[0019] Furthermore, skeleton oil seals are respectively arranged at the front of the A output shaft and the B output shaft in the gear box of the lower-stage feeder, and the pressure cover II is connected to the front end surface of the gear box of the lower-stage feeder.

[0020] Furthermore, a sealing sleeve is connected to the rear end face of the lower-stage feeding barrel, and polytetrafluoroethylene sealing rings are respectively arranged inside the sealing sleeve and between the tails of the two lower-stage feeding screws. The sealing gland II is connected to the sealing sleeve by screws to fix the polytetrafluoroethylene sealing ring.

[0021] Furthermore, the upper-stage feeder bottom plate is fixedly mounted on the top ends of the four upper-stage feeder support rods by nuts, and the lower ends of the four upper-stage feeder support rods are fixedly mounted on the lower-stage feeder bottom plate by nuts;

[0022] The bottom plate of the lower-stage feeder is fixedly mounted on the top ends of four lower-stage feeder support rods by nuts, and the lower ends of the four lower-stage feeder support rods are fixedly mounted on the support vehicle mounting plate of the support vehicle by nuts.

[0023] Furthermore, four movable rollers are installed at the bottom of the support vehicle to facilitate the movement of the volumetric metering two-stage forced side feeder.

[0024] Beneficial effects: The volumetric metering two-stage forced side feeder structure of the utility model adopts a superimposed combination structure of an upper-stage feeder and a lower-stage feeder, and continuously feeds powdery materials, materials with poor fluidity and containing a certain amount of water, short fiber materials, starch-modified materials, etc. into the side feed port of the barrel of a twin-screw extruder or a single-screw extruder in a volumetric metering manner, which meets the feeding method required according to the physical properties of the polymer material and significantly improves the output and product quality. The volumetric metering two-stage forced side feeder structure is characterized by convenient operation, accurate and continuous stable feeding, and reliable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the front view of the volumetric metering double-stage forced side feeder structure;

[0026] Figure 2 It is a side view of the volumetric metering double-stage forced side feeder structure;

[0027] Figure 3 It is a schematic diagram of the stirring paddle composition;

[0028] Figure 4 It is a schematic diagram of the drive shaft I;

[0029] Figure 5 It is a schematic diagram of the drive shaft II;

[0030] Figure 6 This is a schematic diagram of the A output shaft composition;

[0031] Figure 7 This is a schematic diagram of the B output shaft composition;

[0032] In the figure: 1- drop body; 2- lower stage feeding barrel; 3- lower stage feeding screw; 4- upper stage feeding barrel; 5- upper stage feeding screw; 6- feeding pot body; 7- stirring paddle assembly; 8- sealing ring; 9- sealing gland I; 10- brass sleeve; 11- deep groove ball bearing I; 12- upper stage feeding machine gearbox; 13- upper stage feeding machine; 14- reduction motor I; 15- gland I; 16- A output shaft assembly; 17- B output shaft assembly; 18- skeleton oil seal; 19- upper stage feeding machine bottom plate; 20- upper stage feeding machine support rod; 21- lower stage feeding machine; 22- reduction motor II; 23- lower stage feeding machine gearbox; 24- driving shaft I assembly; 25- PTFE sealing ring; 26- sealing sleeve; 27- Seal gland II; 28- Drive shaft II composition; 29- Gland II; 30- Lower feeder support rod; 31- Bracket car mounting plate; 32- Bracket car; 33- Lower feeder bottom plate; 34- Pad; 35- Mounting screw; 36- Stirring blade; 37- Moving roller; 38- Stirring blade shaft; 39- Stirring gear; 40- Flat key I; 41- Lock nut; 42- Ball bearing mounting seat; 43- Deep groove ball bearing II; 44- Flat key II; 45- Stirring drive gear; 46- Drive gear; 47- Flat key III; 48- Deep groove ball bearing III; 49- Drive shaft I; 50- Keyway I; 51- Spacer; 52- Drive shaft II; 53- Keyway II; 54- A-axis hook key head; 55- A output shaft; 56- Deep groove ball bearing IV; 57- A-axis gear; 58- tapered roller bearing; 59- B-axis hook key head; 60- B output shaft; 61- B-axis gear. DETAILED DESCRIPTION

[0033] The utility model is further explained below in conjunction with the accompanying drawings.

[0034] like Figures 1 to 7 As shown, a volumetric metering two-stage forced side feeder structure of the utility model includes a lower-stage feeder 21, a blanking body 1, and an upper-stage feeder 13. The upper-stage feeder 13 includes an upper-stage feeder gearbox 12, a drive shaft I component 24, a stirring paddle component 7, an A output shaft component 16, a B output shaft component 17, and a reduction motor I14. The lower-stage feeder 21 includes a lower-stage feeder gearbox 23, a drive shaft II component 28, an A output shaft component 16, a B output shaft component 17, and a reduction motor II22.

[0035] The upper-stage feeder gearbox 12 of the upper-stage feeder 13 is provided with a drive shaft I component 24, which includes a drive shaft I49. The front end and rear end of the drive shaft I49 are respectively provided with deep groove ball bearings II43 and III48, which are fixedly installed at the corresponding mounting holes of the upper-stage feeder gearbox 12. The deep groove ball bearings II43 and III48 support the drive shaft I49 to rotate in the upper-stage feeder gearbox 12. The drive shaft I49 is provided with a stirring drive gear 45 and a drive gear 46. The stirring drive gear 45 is connected to the drive shaft I49 by a flat key II44, and the drive gear 46 is connected to the drive shaft I49 by a flat key III47. The rear end of the drive shaft I49 is connected to the output shaft of the reduction motor I14 by a flat key through a keyway I50, and the upper part of the stirring drive gear 45 is meshed with the lower part of the stirring gear 39 of the stirring paddle component 7.

[0036] The stirring gear 39 of the stirring paddle assembly 7 is connected to the stirring paddle shaft 38 by a flat key 140, and the locking nut 41 tightly fixes the stirring gear 39 on the stirring paddle shaft 38. The middle part of the stirring paddle shaft 38 is connected to the brass sleeve 10, and the ball bearing mounting seat 42 at the rear end of the stirring paddle shaft 38 is fixedly installed with a deep groove ball bearing 11. The brass sleeve 10 and the deep groove ball bearing 111 are respectively fixedly installed at the corresponding mounting holes of the upper-stage feeder gear box 12. The stirring paddle shaft 38 is supported by the brass sleeve 10 and the deep groove ball bearing 111. The stirring blade 36 is installed at the front end of the stirring paddle shaft 38 by threaded connection. The front part of the stirring paddle shaft 38 extends into the feeding pot body 6 through the rear end through hole of the feeding pot body 6. A sealing ring 8 is provided between the rear end through hole of the feeding pot body 6 and the front part of the stirring paddle shaft 38 to prevent the material in the feeding pot body 6 from leaking from the stirring paddle shaft 38. The sealing gland 19 is connected and installed at the rear end through hole of the feeding pot body 6 to fix the sealing ring 8.

[0037] An A output shaft component 16 and a B output shaft component 17 are provided in the upper-stage feeder gearbox 12. The A output shaft 55 of the A output shaft component 16 and the B output shaft 60 of the B output shaft component 17 in the upper-stage feeder gearbox 12 are installed in parallel below the drive shaft I component 24. A deep groove ball bearing IV56 is installed at the front of the A output shaft 55 and the B output shaft 60, and a tapered roller bearing 58 is installed at the rear end of the A output shaft 55 and the B output shaft 60. The deep groove ball bearing IV56 and the tapered roller bearing 58 are respectively fixedly installed at the corresponding mounting holes of the upper-stage feeder gearbox 12. The A output shaft 55 and the B output shaft 60 are supported by the deep groove ball bearing IV56 and the tapered roller bearing 58. The deep groove ball bearing IV56 bears the radial force of the A output shaft 55 and the B output shaft 60, and the tapered roller bearing 58 bears the radial force and axial backward thrust of the A output shaft 55 and the B output shaft 60. The upper part of the A-axis gear 57 of the A output shaft 55 and the upper part of the B-axis gear 61 of the B output shaft 60 are respectively meshed with the lower part of the driving gear 46 installed on the driving shaft I49, and the driving gear 46 drives the A output shaft 55 and the B output shaft 60 to rotate in the same direction. The A-axis hook key head 54 of the A output shaft 55 and the B-axis hook key head 59 of the B output shaft 60 are respectively connected to the tail end hook key grooves of the two upper-stage feeding screws 5 meshed at 90° to drive the two upper-stage feeding screws 5 meshed at 90° to rotate in the same direction and parallel. The front parts of the A output shaft 55 and the B output shaft 60 in the upper-stage feeder gear box 12 are respectively provided with skeleton oil seals 18 to prevent the grease in the upper-stage feeder gear box 12 from leaking from the two upper-stage feeding screws 5. The pressure cover I15 is connected to the front end surface of the upper-stage feeder gear box 12 to fix the corresponding skeleton oil seal 18 and the corresponding deep groove ball bearing II43.

[0038] The reduction motor I14 of the upper-stage feeder 13 is driven and the speed is controlled by the frequency converter. The front flange of the reduction motor I14 is connected to the rear end face of the upper-stage feeder gear box 12. The bottom of the upper-stage feeder gear box 12 is fixedly installed on the upper-stage feeder bottom plate 19. The top flange of the feeding pot body 6 is connected to the bottom flange of the hopper. The bottom of the feeding pot body 6 is fixedly installed on the upper-stage feeder bottom plate 19. The stirring blade 36 is installed in the feeding pot body 6. The rear end flange of the upper-stage feeding barrel 4 is connected to the front end face of the bottom of the feeding pot body 6. The middle flange of the upper-stage feeding barrel 4 is connected to the upper opening of the blanking body 1. The two upper-stage feeding screws 5 are installed in parallel in the upper-stage feeding barrel 4 and the bottom of the feeding pot body 6 at 90° meshing. The rear end surface of the bottom of the feeding pot body 6 is connected to the plugging sleeve 26, and a polytetrafluoroethylene sealing ring 25 is respectively arranged between the plugging sleeve 26 and the tail of the two upper-stage feeding screws 5 to prevent the material in the feeding pot body 6 from leaking from the tail of the upper-stage feeding screws 5 when the two upper-stage feeding screws 5 rotate. The sealing gland II27 is connected to the plugging sleeve 26 by screws to fix the polytetrafluoroethylene sealing ring 25. The upper-stage feeder bottom plate 19 is fixedly installed on the top of the four upper-stage feeder support rods 20 by nuts, and the lower ends of the four upper-stage feeder support rods 20 are fixedly installed on the lower-stage feeder bottom plate 33 by nuts.

[0039] A drive shaft II component 28 is arranged in the gear box 23 of the lower-stage feeder 21, and the drive shaft II component 28 includes a drive shaft II52. The front end and the rear end of the drive shaft II52 are respectively installed with a deep groove ball bearing II43 and a deep groove ball bearing III48. The deep groove ball bearing II43 and the deep groove ball bearing III48 are fixedly installed at the corresponding mounting holes of the gear box 23 of the lower-stage feeder. The deep groove ball bearing II43 and the deep groove ball bearing III48 support the drive shaft II52 to rotate in the gear box 23 of the lower-stage feeder. A drive gear 46 is installed on the drive shaft II52, and the drive gear 46 is connected to the drive shaft II52 by a flat key III47. The rear end of the drive shaft II52 is connected to the output shaft of the reduction motor II22 by a flat key through a keyway II53. A spacer 51 is installed on the drive shaft II52, and the spacer 51 is arranged between the deep groove ball bearing II43 and the drive gear 46 to fix the position of the deep groove ball bearing II43 and the drive gear 46.

[0040] An A output shaft component 16 and a B output shaft component 17 are provided in the lower-stage feeder gear box 23. The A output shaft 55 of the A output shaft component 16 and the B output shaft 60 of the B output shaft component 17 in the lower-stage feeder gear box 23 are installed in parallel below the drive shaft II component 28. Deep groove ball bearings IV56 are installed at the front of the A output shaft 55 and the B output shaft 60, and tapered roller bearings 58 are installed at the rear ends of the A output shaft 55 and the B output shaft 60. The deep groove ball bearings IV56 and the tapered roller bearings 58 are fixedly installed at the corresponding mounting holes of the lower-stage feeder gear box 23 respectively. The upper part of the A-axis gear 57 of the A output shaft 55 and the upper part of the B-axis gear 61 of the B output shaft 60 are respectively meshed with the lower part of the driving gear 46 installed on the driving shaft II52, and the driving gear 46 drives the A output shaft 55 and the B output shaft 60 to rotate in the same direction. The A-axis hook key head 54 of the A output shaft 55 and the B-axis hook key head 59 of the B output shaft 60 are respectively connected to the tail end hook key grooves of the two lower-stage feeding screws 3 meshed at 90° to drive the two lower-stage feeding screws 3 meshed at 90° to rotate in the same direction and parallel. The front parts of the A output shaft 55 and the B output shaft 60 in the lower-stage feeder gear box 23 are respectively provided with skeleton oil seals 18 to prevent the grease in the lower-stage feeder gear box 23 from leaking from the two lower-stage feeding screws 3. The pressure cover II29 is connected to the front end surface of the lower-stage feeder gear box 23 to fix the corresponding skeleton oil seal 18 and the corresponding deep groove ball bearing II43.

[0041] The reduction motor II22 of the lower-stage feeder 21 is directly driven by a power supply, and the front flange of the reduction motor II22 is connected to the rear end face of the gear box 23 of the lower-stage feeder. The bottom of the gear box 23 of the lower-stage feeder is fixedly mounted on the bottom plate 33 of the lower-stage feeder. The lower-stage feeding barrel 2 is supported by a plurality of cushion blocks 34 and fixedly mounted on the bottom plate 33 of the lower-stage feeder through corresponding mounting screws 35. The front flange of the lower-stage feeding barrel 2 is connected to the side feed port of the barrel of the co-directional parallel twin-screw extruder or the single-screw extruder. A cooling water channel is provided in the barrel wall at the front of the lower-stage feeding barrel 2, which can prevent the heat of the barrel of the extruder from being transferred to the feed port of the lower-stage feeding barrel 2, thereby avoiding the spraying phenomenon caused by water vapor at the feed port of the lower-stage feeding barrel 2. The feed port of the lower-stage feeding barrel 2 is connected to the lower end flange of the blanking body 1, and two lower-stage feeding screws 3 are meshed and installed in parallel in the lower-stage feeding barrel 2 at 90°. The rear end face of the lower-stage feeding barrel 2 is connected to the plugging sleeve 26, and polytetrafluoroethylene sealing rings 25 are respectively arranged inside the plugging sleeve 26 and between the tails of the two lower-stage feeding screws 3 to prevent the material in the lower-stage feeding barrel 2 from leaking from the tails of the lower-stage feeding screws 3 when the two lower-stage feeding screws 3 rotate. The sealing gland II27 is connected to the plugging sleeve 26 by screws to fix the polytetrafluoroethylene sealing ring 25. The lower-stage feeder bottom plate 33 is fixedly mounted on the top of the four lower-stage feeder support rods 30 by nuts, and the lower ends of the four lower-stage feeder support rods 30 are fixedly mounted on the support vehicle mounting plate 31 of the support vehicle 32 by nuts. The center height of the lower-stage feeding barrel 2 of the lower-stage feeder 21 can be adjusted by the lower-stage feeder support rods 30 to adapt to the center height of the barrel side feed port of the co-directional parallel twin-screw extruder or single-screw extruder.

[0042] Four moving rollers 37 are installed at the bottom of the support vehicle 32 to facilitate the movement of the volumetric metering two-stage forced side feeder.

[0043] The functions of the volumetric metering two-stage forced side feeder structure are as follows:

[0044] The front end flange of the lower-stage feeding barrel 2 of the lower-stage feeder 21 of the volumetric metering double-stage forced side feeder structure can be connected to the side feed port of the barrel of the co-directional parallel twin-screw extruder or single-screw extruder. According to the production process requirements, powdery materials, materials with poor fluidity and containing a certain amount of water, short fiber materials, starch-modified materials, etc. need to be continuously and evenly fed into the barrel from the feed port of the co-directional parallel twin-screw extruder or single-screw extruder. Start the lower-stage feeder 21, the reduction motor II22 is directly driven by the power supply, and the reduction motor II22 drives the A output shaft 55 and the B output shaft 60 to rotate in the same direction through the driving gear 46 on the driving shaft II52 of the gear box 23 of the lower-stage feeder. The A output shaft 55 and the B output shaft 60 drive the two lower-stage feeding screws 3 meshed at 90 degrees to rotate in the same direction and parallel in the lower-stage feeding barrel 2 through the A shaft hook key head 54 and the B shaft hook key head 59 respectively.

[0045] The upper-stage feeder 13 is started, and the speed of the reduction motor I14 is controlled by the frequency converter. The reduction motor I14 drives the stirring paddle shaft 38 to rotate through the stirring driving gear 45 on the driving shaft I49 of the upper-stage feeder gear box 12. The stirring paddle shaft 38 drives the stirring blade 36 to rotate in the feeding pot body 6. The driving gear 46 on the driving shaft I49 drives the A output shaft 55 and the B output shaft 60 to rotate in the same direction. The A output shaft 55 and the B output shaft 60 drive the two upper-stage feeding screws 5 meshed at 90 degrees to rotate in the same direction and parallel in the upper-stage feeding barrel 4 and the bottom of the feeding pot body 6 through the A-axis hook key head 54 and the B-axis hook key head 59 respectively.

[0046] The materials required for the process are added into the hopper and then enter the feeding pot body 6. The rotation of the stirring blade 36 can prevent the corresponding materials from being suspended in the feeding pot body 6. There is no resistance to pushing the materials at the front end of the upper-stage feeding screw 5, and the upper-stage feeding barrel 4 does not contact the barrel of the co-directional parallel twin-screw extruder or single-screw extruder. The heat of the extruder barrel will not be transmitted to the upper-stage feeding barrel 4, and the moisture in the material will not generate water vapor, thereby avoiding the spraying phenomenon caused by water vapor at the feed port of the feeding pot body 6. The two upper-stage feeding screws 5 meshed at 90 degrees rotate in the same direction and in parallel, and continuously and accurately push the materials in the feeding pot body 6 through the drop body 1 into the feed port of the lower-stage feeding barrel 2 in a volumetric metering manner. The front end flange of the lower-stage feeding barrel 2 of the lower-stage feeding machine 21 is connected to the side feed port of the barrel of the co-directional parallel twin-screw extruder or the single-screw extruder. A cooling water channel is arranged in the barrel wall at the front of the lower-stage feeding barrel 2, which can prevent the heat of the barrel of the extruder from being transferred to the feed port of the lower-stage feeding barrel 2, thereby avoiding the spraying phenomenon caused by water vapor at the feed port of the lower-stage feeding barrel 2. The reduction motor II22 of the lower-stage feeding machine 21 is directly driven by a power supply, and the two lower-stage feeding screws 3 meshing at 90° rotate in the same direction and at full speed, forcing the material at the feed port of the lower-stage feeding barrel 2 to pass through the lower-stage feeding barrel 2 into the barrel of the co-directional parallel twin-screw extruder or the single-screw extruder.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A volumetric metering two-stage forced side feeder structure, characterized by: It includes a lower-stage feeder (21), a material drop body (1), and an upper-stage feeder (13); A drive shaft assembly (24) is arranged in the upper-stage feeder gear box (12) of the upper-stage feeder (13), and the drive shaft assembly (24) includes a drive shaft (49), and a stirring drive gear (45) and a drive gear (46) are mounted on the drive shaft (49), and the rear end of the drive shaft (49) is connected to the output shaft of the reduction motor I (14), and the upper part of the stirring drive gear (45) is meshed with the lower part of the stirring gear (39) of the stirring paddle assembly (7); The stirring gear (39) of the stirring paddle assembly (7) is connected to the stirring paddle shaft (38), and the locking nut (41) fixes the stirring gear (39) to the stirring paddle shaft (38). The stirring blade (36) is installed at the front end of the stirring paddle shaft (38), and the front part of the stirring paddle shaft (38) extends into the feeding pot body (6) through the rear end through hole of the feeding pot body (6); An A output shaft assembly (16) and a B output shaft assembly (17) are provided in the upper stage feeder gear box (12). The A output shaft (55) of the A output shaft assembly (16) and the B output shaft (60) of the B output shaft assembly (17) in the upper stage feeder gear box (12) are installed in parallel below the drive shaft I assembly (24). The upper portion of the A shaft gear (57) of the A output shaft (55) and the upper portion of the B shaft gear (61) of the B output shaft (60) are respectively meshed with the lower portion of the drive gear (46) installed on the drive shaft I (49). The A shaft hook key head (54) of the A output shaft (55) and the B shaft hook key head (59) of the B output shaft (60) are respectively connected to the tail end hook key grooves of two upper stage feeding screws (5) meshed at 90 degrees. The front flange of the reduction motor I (14) is connected to the rear end face of the upper-stage feeder gearbox (12), the bottom of the upper-stage feeder gearbox (12) is fixedly mounted on the upper-stage feeder bottom plate (19), the top flange of the feeding pot body (6) is connected to the bottom flange of the hopper, the bottom of the feeding pot body (6) is fixedly mounted on the upper-stage feeder bottom plate (19), the stirring blade (36) is installed in the feeding pot body (6), the rear end flange of the upper-stage feeding cylinder (4) is connected to the front end face of the bottom of the feeding pot body (6), the middle flange of the upper-stage feeding cylinder (4) is connected to the upper opening of the blanking body (1), and two upper-stage feeding screws (5) are installed in parallel in the upper-stage feeding cylinder (4) and the bottom of the feeding pot body (6) in a 90° meshing manner; A drive shaft II component (28) is arranged in the lower-stage feeder gear box (23) of the lower-stage feeder (21), and the drive shaft II component (28) includes a drive shaft II (52), a drive gear (46) is installed on the drive shaft II (52), and the rear end of the drive shaft II (52) is connected to the output shaft of the reduction motor II (22); An A output shaft component (16) and a B output shaft component (17) are provided in the gear box (23) of the lower stage feeder. The A output shaft (55) of the A output shaft component (16) and the B output shaft (60) of the B output shaft component (17) in the gear box (23) of the lower stage feeder are installed in parallel below the drive shaft component II (28). The upper part of the A shaft gear (57) of the A output shaft (55) and the upper part of the B shaft gear (61) of the B output shaft (60) are respectively meshed with the lower part of the drive gear (46) installed on the drive shaft II (52). The A shaft hook key head (54) of the A output shaft (55) and the B shaft hook key head (59) of the B output shaft (60) are respectively connected to the tail end hook key grooves of two lower stage feeding screws (3) meshed at 90 degrees. The front flange of the reduction motor II (22) is connected to the rear end face of the gear box (23) of the lower-stage feeder. The bottom of the gear box (23) of the lower-stage feeder is fixedly mounted on the bottom plate (33) of the lower-stage feeder. The lower-stage feeding barrel (2) is fixedly mounted on the bottom plate (33) of the lower-stage feeder. The front flange of the lower-stage feeding barrel (2) is connected to the side feed port of the barrel of a co-directional parallel twin-screw extruder or a single-screw extruder. A cooling water channel is provided in the barrel wall at the front of the lower-stage feeding barrel (2). The feed port of the lower-stage feeding barrel (2) is connected to the lower end flange of the blanking body (1). Two lower-stage feeding screws (3) are installed in parallel in the lower-stage feeding barrel (2) in a 90° meshing manner.

2. A volumetric metering two-stage forced side feeder structure according to claim 1, characterized in that: Deep groove ball bearings II (43) and III (48) are respectively installed at the front and rear parts of the drive shafts I (49) and II (52), and the deep groove ball bearings II (43) and III (48) are fixedly installed at corresponding mounting holes of the upper-stage feeder gearbox (12) and the lower-stage feeder gearbox (23).

3. A volumetric metering two-stage forced side feeder structure according to claim 1, characterized in that: The middle part of the stirring paddle shaft (38) is connected to the brass sleeve (10), and the ball bearing mounting seat (42) at the rear end of the stirring paddle shaft (38) is fixedly mounted with a deep groove ball bearing I (11). The brass sleeve (10) and the deep groove ball bearing I (11) are respectively fixedly mounted at corresponding mounting holes of the upper-stage feeder gear box (12), and the stirring paddle shaft (38) is supported by the brass sleeve (10) and the deep groove ball bearing I (11).

4. A volumetric metering two-stage forced side feeder structure according to claim 1, characterized in that: A deep groove ball bearing IV (56) is installed at the front of the A output shaft (55) and the B output shaft (60), and a tapered roller bearing (58) is installed at the rear of the A output shaft (55) and the B output shaft (60). The deep groove ball bearing IV (56) and the tapered roller bearing (58) are respectively fixedly installed at corresponding mounting holes of the upper-stage feeder gear box (12) and the lower-stage feeder gear box (23).

5. The volumetric metering two-stage forced side feeder structure according to claim 1 is characterized by: Skeleton oil seals (18) are respectively provided at the front of the A output shaft (55) and the B output shaft (60) in the upper-stage feeder gear box (12), and the gland I (15) is connected to the front end surface of the upper-stage feeder gear box (12).

6. A volumetric metering two-stage forced side feeder structure according to claim 1, characterized in that: A sealing ring (8) is provided between the rear end through hole of the feeding pot body (6) and the front part of the stirring paddle shaft (38), and a sealing gland I (9) is connected and installed at the rear end through hole of the feeding pot body (6) to fix the sealing ring (8); The rear end surface of the bottom of the feeding pot body (6) is connected to a plugging sleeve (26) for installation. Teflon sealing rings (25) are respectively arranged inside the plugging sleeve (26) and between the tails of the two upper-stage feeding screws (5). The sealing gland II (27) is connected to the plugging sleeve (26) by screws to fix the Teflon sealing ring (25).

7. The volumetric metering two-stage forced side feeder structure according to claim 1 is characterized by: The front parts of the A output shaft (55) and the B output shaft (60) in the lower-stage feeder gear box (23) are respectively provided with skeleton oil seals (18), and the gland II (29) is connected to the front end surface of the lower-stage feeder gear box (23).

8. The volumetric metering two-stage forced side feeder structure according to claim 1 is characterized by: The rear end surface of the lower-stage feeding cylinder (2) is connected to a plugging sleeve (26) for installation. Polytetrafluoroethylene sealing rings (25) are respectively arranged inside the plugging sleeve (26) and between the tails of the two lower-stage feeding screws (3). The sealing gland II (27) is connected to the plugging sleeve (26) by screws to fix the polytetrafluoroethylene sealing ring (25).

9. The volumetric metering two-stage forced side feeder structure according to claim 1 is characterized by: The upper-stage feeder bottom plate (19) is fixedly mounted on the top ends of four upper-stage feeder support rods (20) by nuts, and the lower ends of the four upper-stage feeder support rods (20) are fixedly mounted on the lower-stage feeder bottom plate (33) by nuts; The lower-stage feeder bottom plate (33) is fixedly mounted on the top ends of four lower-stage feeder support rods (30) by nuts, and the lower ends of the four lower-stage feeder support rods (30) are fixedly mounted on the support vehicle mounting plate (31) of the support vehicle (32) by nuts.

10. A volumetric metering two-stage forced side feeder structure according to claim 9, characterized in that: Four movable rollers (37) are installed at the bottom of the support vehicle (32) to facilitate the movement of the volumetric metering two-stage forced side feeder.

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