CN211686991U - Spiral feeding mechanism and dry type granulator with same - Google Patents

Abstract

The utility model relates to a material conveyor technical field, concretely relates to spiral feeding mechanism and have its dry process granulator. A screw feed mechanism comprising: the device comprises a screw rod (4) and a feeding box (5) sleeved on the periphery of the screw rod (4); at least one graphite ring (6) arranged at the joint of the screw rod (4) and the feeding box (5); first limit structure (7) and second limit structure (8), follow the axial of hob (4) is established respectively graphite ring (6)'s both sides, it is right graphite ring (6) exert a pair of effort of effect in opposite directions, with the restriction graphite ring (6) axial motion. The utility model provides a sealing washer difficult wearing and tearing, sealed effectual spiral feeding mechanism and have its dry process granulator.

Description

Spiral feeding mechanism and dry type granulator with same

Technical Field

The utility model relates to a material conveyor technical field, concretely relates to spiral feeding mechanism and have its dry process granulator.

Background

In recent years, in the chemical industry, a dry granulation process is rapidly developed and widely applied to processing of chemical products such as various catalysts. The dry granulation process is a process method which is used for uniformly mixing the powder of the materials and the auxiliary materials, compressing the mixture into large sheets or plates, crushing and screening the large sheets or plates into particles with required sizes.

The dry granulation process is completed by a dry granulator. The dry granulating machine mainly comprises a feeding mechanism, a compression roller extruding mechanism and a granulating mechanism. And conveying the dried material into the granulator from a feeding mechanism of a dry granulator, extruding the material into sheets by a compression roller extruding mechanism, and crushing, granulating, screening and the like the sheets to obtain the required granular product.

Dry granulators typically employ a screw feed mechanism to feed the material into the roll work area of a roll extruder. The spiral feeding mechanism comprises a spiral rod and a feeding box, and a cover plate allowing the spiral rod to extend out is arranged on the feeding box. The catalyst material in the chemical industry contains metal elements, so that the requirement on the wear resistance of the spiral feeding mechanism is high, the production environment conditions in the chemical industry are general, the temperature and humidity control is poor, and the high requirement on the sealing performance of the spiral feeding mechanism is provided. In the prior art, axial sealing is generally performed between a double-Gelai sealing ring and a screw rod. However, the fit clearance between the double-Gelai sealing ring and the screw rod is easy to increase gradually due to long-time abrasion, and particularly when the catalyst contains metal elements, the abrasion is more obvious, so that the material leaks from the gap. Therefore, the sealing effect is poor and needs to be replaced frequently.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art sealing washer easy wearing and tearing, the not good defect of sealed effect to a spiral feeding mechanism is provided.

The utility model provides a spiral feeding mechanism, include:

the feeding box is sleeved on the periphery of the screw rod;

the graphite ring is arranged at the joint of the screw rod and the feeding box;

the first limiting structure and the second limiting structure are respectively arranged on two sides of the graphite ring along the axial direction of the screw rod, and exert a pair of acting forces acting in opposite directions on the graphite ring so as to limit the axial movement of the graphite ring.

The graphite rings are a pair distributed along the axial direction.

First limit structure with second limit structure all includes the connecting portion that mutual butt set up and right the application of force portion of axial effort is applyed to the graphite ring, application of force portion follows the axial extension of hob, two form between the application of force portion the accommodation space of graphite ring.

The first limiting structure is L-shaped, and the second limiting structure is Z-shaped.

The bent part of the L-shaped first limiting structure is in contact with one bent part of the Z-shaped second limiting structure.

The feeding box further comprises a first fixing structure and a second fixing structure which penetrate through the first limiting structure and the second limiting structure and are fixed inside the feeding box.

The utility model also provides a dry process granulator, include spiral feeding mechanism.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a spiral feeding mechanism locates the graphite ring's of the junction of hob and pay-off box setting, not only can play due sealed effect, moreover because graphite ring itself has good wearability, even consequently be in relatively poor external environment condition, for example in the material transfer process who contains metallic element, it still can keep good sealing performance, and life is longer. In addition, the arrangement of the first limiting structure and the second limiting structure on the two axial sides of the graphite ring can apply a pair of acting forces acting in opposite directions to the graphite ring so as to limit axial movement of the graphite ring possibly caused by the fact that the friction coefficient of the graphite ring is small, and the sealing performance is further improved.

2. The utility model provides a spiral feeding mechanism, the setting of two application of force portions of first limit structure and second limit structure and graphite ring contact position department, a pair of axial effort in opposite directions is directly applyed to the graphite ring, has further improved the limiting displacement to the graphite ring, and the effect is direct more, effective.

3. The utility model provides a spiral feeding mechanism, the first limit structure kink of L shape and the contact setting of a kink of Z shape second limit structure for first limit structure and second limit structure's area of contact is bigger, and forms the mutual contact of different faces, not only applys axial effort to the graphite ring, still applys the axial packing force of perpendicular to, prescribes a limit to the position of graphite ring more firmly.

4. The utility model provides a spiral feeding mechanism runs through first limit structure and second limit structure's first fixed knot structure and second fixed knot construct's setting for first limit structure and second limit structure's fixed mounting is more reliable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a spiral feeding mechanism provided by the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

FIG. 3 is an enlarged partial schematic view of FIG. 2;

fig. 4 is a schematic view of another embodiment of a second limiting structure.

Description of reference numerals:

1-right half clutch; 2-coupling nut; 3-locking the nut; 4-a screw rod; 5-feeding box; 6-graphite ring; 7-a first limit structure; 8-a second limiting structure; 9-a first fixation structure; 10-a force application part; 11-a connecting portion; 12-second fixation structure.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

One embodiment of the screw feeding mechanism shown in fig. 1-3 comprises a screw rod 4 and a feeding box 5 sleeved on the periphery of the screw rod 4, wherein a pair of graphite rings 6 are arranged at the joint of the screw rod 4 and the feeding box 5 along the axial direction of the screw rod 4. In order to limit the possible axial movement of the graphite ring 6 along the screw rod 4, a first limit structure 7 and a second limit structure 8 are respectively arranged on two sides of the graphite ring 6. First limit structure and second limit structure install in the headspace of hob 4 and 5 tip of pay-off box, apply a pair of axial effort in opposite directions in edge to graphite ring 6 to form the effective seal to the hob 4 with the 5 junction of pay-off box with the cooperation of graphite ring 6, prevent that the material from spilling over the back polluted environment from the pay-off box.

In a specific embodiment, the first limit structure 7 is an L-shaped cover plate, and the second limit structure 8 is a Z-shaped stop cover. The bent portion of the L-shaped first limit structure 7 is disposed in contact with one bent portion of the zigzag-shaped second limit structure 8. Just first limit structure 7 with second limit structure 8 all includes connecting portion 11 that mutual butt set up and right graphite ring 6 applys the application of force portion 10 of axial effort, application of force portion 10 is followed the axial extension of hob 4, and the horizontal part of the first limit structure 7 of L shape forms application of force portion 10 promptly to extend right and graphite ring 6 butt, the vertical portion that zigzag second limit structure 8 is located the below forms corresponding application of force portion 10, directly sets up with the contact of graphite ring 6, two space between the application of force portion 10 forms promptly graphite ring 6's accommodation space. The two urging portions 10 apply a pair of opposing clamping forces to the graphite ring 6.

In order to further improve the firmness of the connection of the first limiting structure 7 and the second limiting structure 8, the feeding box further comprises screws which penetrate through the first limiting structure 7 and the second limiting structure 8 and are fixed inside the feeding box 5 and are used as a first fixing structure 9 and a second fixing structure 12.

In order to limit the radial movement of the screw rod 4, a right half clutch 1 with a limiting structure is arranged at one end of the screw rod 4, which is not sleeved with the feeding box 5, and a connecting nut 2 and a locking nut 3 are sleeved outside the right half clutch 1, so that the rotation stability of the screw rod 4 is ensured.

As an alternative embodiment, the second limiting structure 8 may also be an L-shape that is arranged symmetrically to the first limiting structure 7, as long as the vertical parts of the L-shape are spliced with each other, and an installation space of the graphite ring 6 is reserved between the horizontal parts.

As an alternative embodiment, as shown in fig. 4, the force application portion 10 of the second limit structure 8 may also be formed by bending and extending leftward.

The utility model also provides a dry process granulator, include spiral feeding mechanism.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (7)

1. A spiral feeding mechanism, comprising:

the device comprises a screw rod (4) and a feeding box (5) sleeved on the periphery of the screw rod (4);

at least one graphite ring (6) arranged at the joint of the screw rod (4) and the feeding box (5);

first limit structure (7) and second limit structure (8), follow the axial of hob (4) is established respectively graphite ring (6)'s both sides, it is right graphite ring (6) exert a pair of effort of effect in opposite directions, with the restriction graphite ring (6) axial motion.

2. Screw feeder according to claim 1, characterised in that the graphite rings (6) are a pair distributed in axial direction.

3. The screw feeding mechanism according to claim 1 or 2, wherein the first limiting structure (7) and the second limiting structure (8) each comprise a connecting portion (11) which is arranged in an abutting manner and a force application portion (10) which applies an axial force to the graphite ring (6), the force application portion (10) extends along the axial direction of the screw rod (4), and a containing space of the graphite ring (6) is formed between the two force application portions (10).

4. A screw feeder according to claim 3, wherein the first stop formation (7) is L-shaped and the second stop formation (8) is Z-shaped.

5. Screw feeder according to claim 4, wherein the bent part of the L-shaped first stop formation (7) is arranged in contact with a bent part of the Z-shaped second stop formation (8).

6. Screw feeder according to claim 1 or 2, further comprising a first fixing structure (9) and a second fixing structure (12) extending through the first and second limiting structures (7, 8) and fixed inside the magazine (5).

7. A dry granulator including a screw feeder according to any one of claims 1 to 6.

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