CN217712926U

CN217712926U - Melt gear pump with bearing bush leakage amount adjustable function

Info

Publication number: CN217712926U
Application number: CN202220925781.5U
Authority: CN
Inventors: 李福勇; 周小强
Original assignee: Zhengzhou Vowa Mechanical Co ltd
Current assignee: Zhengzhou Vowa Mechanical Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-11-01
Anticipated expiration: 2032-04-21

Abstract

The utility model discloses a melt gear pump with adjustable function of bearing bush leakage rate, which relates to the technical field of gear pumps, in particular to a melt gear pump with adjustable function of bearing bush leakage rate, comprising a pump shell, a driving shaft and a driven shaft driven gear which are arranged in the pump shell, wherein the joints of the two ends of the driving shaft and the driven shaft and the pump shell are respectively provided with a bearing bush, four bearing bushes are respectively provided with a lubricating groove, four bearing bushes are respectively provided with a first drainage hole, and the lubricating groove on each bearing bush is communicated with the first drainage hole; a blocking piece is detachably arranged in the outflow end of the first drainage hole; a second drainage hole penetrates through the blocking piece; through first discharge orifice, the setting that runs through the stifled plug member that has the second discharge orifice, make this a melt gear pump with adjustable function of bearing bush leakage quantity possess with the effect of the interior rotten lubricated fuse-element discharge lubrication groove of lubrication groove, reached the transport medium that prevents impurity entering pump, prevent to influence the purpose of fuse-element quality.

Description

Melt gear pump with bearing bush leakage amount adjustable function

Technical Field

The utility model relates to a gear pump technical field more relates to a fuse-element gear pump axle bush institutional advancement specifically is a fuse-element gear pump with axle bush lets out leakage quantity adjustable function.

Background

The melt pump is mainly used for conveying, pressurizing and metering high-temperature and high-viscosity polymer melts. The melt pump is widely applied to extrusion molding of plastic, resin, rubber and chemical fiber products abroad, such as the industries of granulation, films, pipes, plates, sheets, artificial fibers, optical fibers, medical plastic catheters and the like, and is gradually adopted and applied by industrial people in the domestic market along with the increasing development of the mechanical industry.

The high viscous melt trade of polymer rubber silica gel needs melt gear pump discharge gate pressure fluctuation little to the fuse-element ejection of compact, pressure boost and transport operating mode, and the axle bush is lubricated good, and in order to let the axle bush lubrication good on the market, the inside lubrication groove of seting up of axle bush introduces pressure melt lubrication, but the inslot fuse-element circulates for a long time, long-time work back, and the lubrication fuse-element in the lubrication groove can take place changes such as carbonization, leads to the transport medium of impurity entering pump, influences customer's fuse-element quality.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a fuse-element gear pump with bearing bush lets out leakage quantity adjustable function has solved the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a melt gear pump with a bearing bush leakage amount adjustable function comprises a pump shell, a driving shaft and a driven shaft driven gear, wherein the driving shaft and the driven shaft are arranged in the pump shell; detachably is provided with stifled plug member in the first discharge orifice outflow end, be provided with the second discharge orifice that runs through stifled plug member in the stifled plug member, second discharge orifice and first discharge orifice outflow end intercommunication.

Optionally, the inner wall of the outflow end of the first drainage hole is provided with threads, the blocking member is a bolt, and the bolt is matched with the threads.

Optionally, the outer side wall of the driving shaft is fixedly connected with a driving gear; the outer side wall of the driven shaft is fixedly connected with a driven gear, and the driving gear is meshed with the driven gear.

Optionally, the diameter of the second drain hole is smaller than that of the first drain hole, and the diameter of the second drain hole is determined according to the drain flow demand of the medium in the lubrication groove.

(III) advantageous effects

The utility model provides a fuse-element gear pump with adjustable function of bearing bush leakage rate possesses following beneficial effect:

1. this kind of melt gear pump with adjustable function of bearing bush leakage rate through the setting of lubrication groove, makes this kind of melt gear pump with adjustable function of bearing bush leakage rate possess the effect of melt lubrication driving shaft and driven shaft, and the in-process fuse-element of use passes through the bearing bush by the gear chamber and flows into lubrication groove, and driving shaft and driven shaft when the bearing bush internal rotation, the fuse-element in the lubrication groove can play the lubrication action, has reached the purpose that reduces driving shaft power.

2. This kind of fuse-element gear pump with adjustable function of bearing bush leakage quantity through setting up first discharge orifice and running through the plug member that has the second discharge orifice, makes this kind of fuse-element gear pump with adjustable function of bearing bush leakage quantity possess the effect with rotten lubricated fuse-element discharge lubrication groove in the lubrication groove, has reached the transport medium that prevents impurity entering pump, prevents to influence the purpose of fuse-element quality.

Drawings

Fig. 1 is a schematic cross-sectional structural diagram of a melt gear pump with a bearing bush leakage amount adjustable function according to the present invention;

fig. 2 is the utility model relates to a A department enlargies structural schematic in fig. 1 of fuse-element gear pump with adjustable function of axle bush leakage amount.

In the figure: 1. a pump housing; 2. bearing bushes; 3. a lubrication groove; 4. a driven shaft; 5. a driving gear; 6. a drive shaft; 7. a driven gear; 8. a first drain hole; 9. a blocking member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 2, the present invention provides a technical solution: a melt gear pump with a bearing bush leakage amount adjustable function comprises a pump shell 1, and a driving shaft 6 and a driven shaft 4 driven gear 7 which are arranged in the pump shell 1, wherein bearing bushes 2 are respectively arranged at the joints of the two ends of the driving shaft 6 and the driven shaft 4 and the pump shell 1, lubricating grooves 3 are respectively arranged on the four bearing bushes 2, and the lubricating grooves 3 on the four bearing bushes 2 are respectively arranged on the corresponding sides of the driving shaft 6 and the driven shaft 4, and are attached to the corresponding driving shaft 6 or the corresponding driven shaft 4; one end of the lubricating groove 3 close to the inner side is communicated with the gear cavity. The four bearing bushes 2 are provided with first drain holes 8, and the lubricating grooves 3 on the bearing bushes 2 are communicated with the first drain holes 8; the first drain hole 8 is arranged at the edge of the bearing bush 2 and is communicated with one end, close to the outer side, of the lubricating groove 3. Detachably is provided with stifled plug member 9 in the 8 outflow ends in first drain hole, be provided with the second drain hole that runs through stifled plug member 9 in the stifled plug member 9, second drain hole and the 8 outflow ends in first drain hole intercommunication, the diameter of second drain hole is less than the diameter of first drain hole 8. Optionally, the inner wall of the outflow end of the first drain hole 8 is provided with threads, and the plug 9 is a bolt, and the bolt is matched with the threads. The lateral wall fixedly connected with driving gear 5 of driving shaft 6, the lateral wall fixedly connected with driven gear 7 of driven shaft 4, driving gear 5 and driven gear 7 meshing.

When the melt-spinning machine is used, the driving shaft 6 is fixedly connected with the driving device, the driving shaft 6 is driven by the driving device to rotate, the driving shaft 6 drives the driving gear 5 to rotate, the driving gear 5 drives the driven gear 7 to rotate, and after the driving gear 5 and the driven gear 7 are continuously meshed, a melt flows into the gear cavity from the pump inlet and then flows out of the pump outlet from the gear cavity; the pressure in the gear cavity is large, and is influenced by pressure, part of melt flows into the lubricating groove 3, and the driving shaft 6 and the driven shaft 4 are in a rotating state, so that the melt in the lubricating groove 3 can have a lubricating effect on the driving shaft 6 and the driven shaft 4; after the melt in the lubricating groove 3 is subjected to lubricating circulation for a certain time, the melt is denatured and carbonized, namely, is subjected to impurity transformation, and when the denatured and carbonized impurities enter the gear cavity again, the quality of the normal melt is seriously influenced, so that the denatured and carbonized impurities need to be discharged; the impurities in the lubrication groove 3 will flow through the first drain hole 8 to the second drain hole in the obturating member 9 and be discharged through the second drain hole.

And the blocking piece 9 is positioned in the bearing bush 2 and is in threaded connection with the outflow end of the first drainage hole 8, and the blocking piece 9 can be a damping screw plug or a flange bolt. The diameter of the second discharge hole on the blocking part 9 is determined according to the discharge demand of the medium in the lubricating groove 3, and the discharge of impurities in the lubricating groove 3 is changed by replacing damping screw plugs with different diameters, so that the particle function generated by lubrication and discharge friction is met.

The diameter of the second vent hole can be set according to the vent flow demand in actual working conditions.

The utility model discloses a theory of operation and beneficial effect: through the setting of lubrication groove 3, make this kind of melt gear pump with adjustable function of bearing bush leakage rate possess the effect of lubricated driving shaft 6 of fuse-element and driven shaft 4, the in-process fuse-element of use passes through bearing bush 2 by the gear chamber and flows into lubrication groove 3, and driving shaft 6 and driven shaft 4 are when the internal rotation of bearing bush 2, and the fuse-element in the lubrication groove 3 can play the lubrication action, has reached the purpose that reduces driving shaft 6 power. Through the setting of first discharge orifice 8, plug 9, make this kind of fuse-element gear pump with adjustable function of bearing bush leakage quantity possess with the effect of lubricated fuse-element discharge lubrication groove 3 rotten in the lubrication groove 3, reached the transport medium that prevents impurity entering pump, prevent to influence the purpose of customer's fuse-element quality.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a melt gear pump with adjustable function of bearing bush leakage quantity, includes pump case (1) and driving shaft (6), driven shaft (4), driving gear (5), driven gear (7) of setting in pump case (1), and the both ends of driving shaft (6) and driven shaft (4) are provided with bearing bush (2) respectively with the junction of pump case (1), all seted up lubrication groove (3) on four bearing bush (2), its characterized in that: the four bearing bushes (2) are respectively provided with a first drainage hole (8), and the lubricating grooves (3) on the bearing bushes (2) are communicated with the first drainage holes (8); detachably is provided with stifled plug member (9) in the first discharge orifice (8) discharge end, be provided with the second discharge orifice that runs through stifled plug member (9) in stifled plug member (9), second discharge orifice and first discharge orifice (8) discharge end intercommunication.

2. The melt gear pump with the function of adjusting the leakage amount of the bearing bush according to claim 1, characterized in that: the inner wall of the outflow end of the first drainage hole (8) is provided with threads, and the blocking piece (9) is a bolt which is matched with the threads.

3. The melt gear pump with the function of adjusting the leakage amount of the bearing bush according to claim 1, characterized in that: the outer side wall of the driving shaft (6) is fixedly connected with a driving gear (5); the outer side wall of the driven shaft (4) is fixedly connected with a driven gear (7), and the driving gear (5) is meshed with the driven gear (7).

4. The melt gear pump with the function of adjusting the leakage amount of the bearing bush according to claim 1, characterized in that: the diameter of the second drain hole is smaller than the diameter of the first drain hole (8).