CN211649053U - Sealing structure for aquatic feed bulking machine - Google Patents

Abstract

The utility model discloses a sealing structure for an aquatic feed bulking machine, which comprises an outer tube, wherein a screw rod is rotatably arranged in the outer tube, a rotating supporting part is formed at the front end of the outer tube, a round opening is arranged on the rotating supporting part, the head of the screw rod is exposed out of the round opening, an annular sealing sleeve made of metal is sleeved at the head of the screw rod, and the annular sealing sleeve is arranged in the round opening; the annular sealing sleeve comprises an outer ring and an inner ring, a plurality of filling holes are distributed on the annular sealing sleeve along the circumferential direction, the filling holes are arranged between the inner ring and the outer ring along the radial direction and are communicated with the outer ring and the inner ring, and wear-resistant filling materials are arranged in the filling holes; due to the existence of the wear-resistant filler, the friction loss of metal generated at high temperature can be reduced, and the defects of a single metal sealing sleeve are overcome.

Description

Sealing structure for aquatic feed bulking machine

Technical Field

The utility model relates to a bulking machine field, in particular to a seal structure for aquatic products fodder bulking machine.

Background

The puffing machine is a device for processing puffed food or puffed feed, and has the main working principle that mechanical energy is converted into heat energy, the food or feed is extruded to be cooked by the heat energy generated when the machine rotates, and the puffed food or feed has the most obvious characteristic of larger volume. In aquatic feed, use the fodder bulking machine to puff the fodder, the fodder bulking machine generally is screw rod bulking machine, utilizes the screw rod to rotate the transport material and reaches the popped purpose of stirring.

The department that the screw rod tip links to each other with the motor, generally need seal in order to prevent that the material from oozing, generally adopts sealing washer and metal oil blanket bush, but the screw rod is in the rotating-state when operating condition always, and the friction between the metal can lead to heat production to make bush and sealing washer wearing and tearing accelerate, the sealing washer is changed frequently, and the bush also leads to sealed effect to descend because of wearing and tearing.

Disclosure of Invention

The utility model overcomes exist not enough among the above-mentioned prior art, provide an aquatic products fodder bulking machine's seal structure, this seal structure is through setting up cyclic annular seal cover to be equipped with a plurality of filling holes along radial direction in cyclic annular seal cover, set up wear-resisting filler in the filling hole, can reduce the friction loss that the metal produced under high temperature, compensate not enough that single metal seal cover exists.

The technical scheme of the utility model is realized like this:

the sealing structure for the aquatic feed bulking machine comprises an outer pipe, wherein a screw rod is rotatably arranged in the outer pipe, a rotating supporting part is formed at the front end of the outer pipe, a round opening is formed in the rotating supporting part, the head of the screw rod is exposed out of the round opening, an annular sealing sleeve made of metal is sleeved at the head of the screw rod, and the annular sealing sleeve is arranged in the round opening; the annular sealing sleeve comprises an outer ring and an inner ring, a plurality of filling holes are distributed on the annular sealing sleeve along the circumferential direction, the filling holes are arranged between the inner ring and the outer ring along the radial direction and communicated with the outer ring and the inner ring, and wear-resistant fillers are arranged in the filling holes.

Preferably, a step is arranged in the circular opening, and the annular sealing sleeve is inwards abutted to the step. Therefore, the annular sealing sleeve can be prevented from running into the inner tube, and the safety protection effect is achieved.

Preferably, the wear-resistant filler is a graphite material. The graphite has the characteristic of abrasion resistance at high temperature, and plays a role in lubrication, so that the head of the conical screw rod can rotate more freely.

Preferably, the screw is a conical screw. The diameter of the conical screw is gradually reduced from the front end to the tail end, and the pushing pressure is increased when the conical screw reaches the tail end, so that the puffed material can be extruded out of finer template holes, and the processing effect of finer uniform feed is achieved; the front end can be kept stable, and the vibration of the annular sealing sleeve is reduced.

Preferably, the diameter of the filler holes in the outer ring is smaller than the diameter of the filler holes in the inner ring. The filling is convenient, more wear-resistant fillers are contacted with the head of the screw rod, the metal friction is reduced or reduced, and the service lives of the annular sealing sleeve and the screw rod are prolonged.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the annular sealing sleeve in the utility model prevents the material from seeping out of the circular opening from the head of the conical screw, and has two functions, one is the function of a bearing seat, namely the function of rotary support for the head of the conical screw; the second is to play the sealed effect, because of under the high temperature environment, metal is not wear-resisting, can produce wearing and tearing, nevertheless because of having the existence of wear-resisting filler for it can reduce the friction loss that metal produced under high temperature, makes up the not enough that single metal seal cover exists.

Drawings

Fig. 1 is a front view of a twin-shaft bulking machine in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

fig. 3 is a schematic view of a three-dimensional structure of a double-shaft bulking machine in an embodiment of the present invention after a conical screw is hidden and partially cut open;

fig. 4 is a schematic perspective view of the embodiment of the present invention when the conical screw is hidden in the double-shaft bulking machine;

fig. 5 is a schematic view of a partially cut-away three-dimensional structure of a double-shaft bulking machine in an embodiment of the present invention;

fig. 6 is a front view of a conical screw according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a dual-shaft bulking machine according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of the embodiment of the present invention after the conical screw of the double-shaft bulking machine is connected to the driving machine;

FIG. 9 is an enlarged view of portion a of FIG. 8;

fig. 10 is a front view of an annular gland in an embodiment of the present invention;

FIG. 11 is a cross-sectional view taken along line B-B of FIG. 10;

fig. 12 is a schematic perspective view of an annular sealing sleeve according to an embodiment of the present invention.

The figures are numbered: an outer tube 1; a material inlet 2; a rotation support portion 3; a circular opening 4; a step 5; a bushing 6; a notch 7; a tapered inner tube 8; an inner cavity 9; a conical screw 10; a head portion 10 a; a tail portion 10 b; a helical blade 11; an annular gland 12; an outer ring 12 a; an inner ring 12 b; a filler hole 13; a drive mechanism 15; a main motor 16; a reduction gearbox 17; an input shaft 18; a first output shaft 19; a second output shaft 20; a main transmission gear 21; a reduction gearwheel 22; a first transmission gear 23; a second transmission gear 24; a transition gear 25; a coupling 26; a material outlet 27.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

example (b): as shown in fig. 1-12, the present embodiment provides a dual-shaft bulking machine, which comprises an outer tube 1, a material inlet 2 disposed on the wall of the outer tube 1, a rotating support portion 3 formed at the front end of the outer tube 1, two circular openings 4 disposed on the rotating support portion 3, and a step 5 disposed in the circular openings 4.

As shown in fig. 1-4, a bushing 6 is arranged in the outer tube 1, and the bushing 6 is arranged along the length direction of the outer tube 1; specifically, the bushing 6 is formed by processing the bushing 6 in a segmented mode along the length direction of the bushing, is made of wear-resistant alloy materials, and is welded after two adjacent segments are spliced.

A notch 7 communicated with the material inlet 2 is reserved on the outer wall of the lining 6, and when materials enter from the material inlet 2, the materials enter into the lining 6 from the notch 7.

Two conical inner tubes 8 which are arranged along the length direction of the lining 6 and are open at the front and the rear are arranged in the lining 6, inner cavities 9 of the two conical inner tubes 8 are staggered and communicated along the radial direction, the front end opening of each conical inner tube 8 is large, the tail end opening of each conical inner tube 8 is small, an included angle of 2-5 degrees is formed between the central axes of the two conical inner tubes 8, and the included angle is preferably 2.5 degrees.

Two inner cavities 9 are respectively provided with a conical screw 10 in a penetrating way, the conical screw 10 is thinner near the tail end and thicker near the front end, helical blades 11 which are integrally formed with the conical screw 10 are wound on the periphery of the conical screw 10, the helical blades 11 on the two conical screws 10 are arranged in a staggered way, and the conical inner pipe 8 wraps the conical screw 10 and the helical blades 11 from front to back.

The two conical screws 10 respectively comprise a head part 10a and a tail part 10b, the head parts 10a of the two conical screws 10 are exposed out of the two circular openings 4 on the rotating support part 3, as shown in fig. 7, the head parts 10a of the two conical screws 10 are respectively sleeved with an annular sealing sleeve 12 made of metal, and the annular sealing sleeves 12 are inwards abutted to the steps 5; as shown in fig. 10-12, the annular sealing sleeve 12 includes an outer ring 12a and an inner ring 12b, a plurality of filling holes 13 are uniformly distributed on the annular sealing sleeve 12 along the circumferential direction, the filling holes 13 are arranged between the inner ring 12a and the outer ring 12a and communicate the outer ring 12a and the inner ring 12b, and wear-resistant fillers are arranged in the filling holes 13, and the wear-resistant fillers are made of graphite materials.

The head part 10a of the conical screw 10 exposed out of the bushing 6 is connected with a driving mechanism 15, the driving mechanism 15 comprises a main motor 16 and a reduction gearbox 17, an input shaft 18, a first output shaft 19 and a second output shaft 20 are arranged in the reduction gearbox 17, and the input shaft 18, the first output shaft 19 and the second output shaft 20 are rotationally connected with the reduction gearbox 17; wherein the first output shaft 19 and the second output shaft 20 are both arranged side by side.

A main transmission gear 21 is fixedly sleeved on the input shaft 18, and the diameter of the main transmission gear 21 is larger, so that a speed reduction effect is achieved; a deceleration big gear 22 is fixedly sleeved on the first output shaft 19, a first transmission gear 23 is coaxially and fixedly connected with the deceleration big gear 22, a second transmission gear 24 is coaxially and fixedly connected with the second output shaft 20, a transition gear 25 is respectively arranged above and below the space between the first transmission gear 23 and the second transmission gear 24, and the two transition gears 25 are respectively meshed with the first transmission gear 23 and the second transmission gear 24; the main transmission gear 21, the transition gear 25, the first transmission gear 23 and the second transmission gear 24 are all helical gears.

When the material processing device is used, a material to be processed is poured into the material inlet 2, the main motor 16 is controlled to work, the input shaft 18 is connected with the main motor 16 to be used as main power input, and power is transmitted to the first output shaft 19 through the main transmission gear 21; the first and second output shafts 20 synchronously rotate in the same direction due to the upper and lower synchronous meshing of the first and second transmission gears 24 with the transition gear 25, and the first and second output shafts 20 are respectively connected with the heads 10a of the two conical screws 10 through the coupling 26, so that the two conical screws 10 are driven to rotate in the conical inner tube 8, the helical blades 11 push and stir the material, and the processed material is output from the material outlet 27; because the setting of structure makes the end of toper inner tube 8 more and more, helical blade 11's propelling movement pressure is bigger and bigger to make puffed material extrude more tiny template punchhole, reach the processing effect of more tiny even fodder.

Claims (5)

1. A seal structure for aquatic products fodder bulking machine, its characterized in that: the screw rod is rotatably arranged in the outer pipe, a rotating support part is formed at the front end of the outer pipe, a round opening is formed in the rotating support part, the head of the screw rod is exposed out of the round opening, a metal annular sealing sleeve is sleeved on the head of the screw rod, and the annular sealing sleeve is arranged in the round opening; the annular sealing sleeve comprises an outer ring and an inner ring, a plurality of filling holes are distributed on the annular sealing sleeve along the circumferential direction, the filling holes are arranged between the inner ring and the outer ring along the radial direction and communicated with the outer ring and the inner ring, and wear-resistant fillers are arranged in the filling holes.

2. The sealing structure for aquatic feed bulking machine of claim 1, wherein: a step is arranged in the circular opening, and the annular sealing sleeve is inwards abutted to the step.

3. The sealing structure for aquatic feed bulking machine of claim 1, wherein: the wear-resistant filler is a graphite material.

4. The sealing structure for aquatic feed bulking machine of claim 1, wherein: the screw is a conical screw.

5. The sealing structure for aquatic feed bulking machine of claim 1, wherein: the aperture of the filler hole on the outer ring is smaller than that of the filler hole on the inner ring.

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