CN211677611U - Impeller dynamic sealing device and intermittent efficient shaping machine thereof - Google Patents
Impeller dynamic sealing device and intermittent efficient shaping machine thereof Download PDFInfo
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- CN211677611U CN211677611U CN201921895675.1U CN201921895675U CN211677611U CN 211677611 U CN211677611 U CN 211677611U CN 201921895675 U CN201921895675 U CN 201921895675U CN 211677611 U CN211677611 U CN 211677611U
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Abstract
The utility model relates to the technical field of shaping machines, in particular to an impeller dynamic sealing device, in addition, the utility model also relates to an intermittent high-efficiency shaping machine comprising the impeller dynamic sealing device, the impeller dynamic sealing device comprises a labyrinth sealing structure which is arranged along the radial direction, the end surface of one end of the impeller which is relatively close to the negative pressure port is a sealing surface, the labyrinth seal structure is arranged between the inner wall of the inner cavity at the side of the negative pressure port and the sealing surface of the impeller, the dynamic sealing device of the impeller and the intermittent high-efficiency shaping machine of the utility model arrange the labyrinth seal structures which are arranged along the radial direction between the sealing surface of the impeller and the inner wall of the inner cavity, the material in the inner cavity can be prevented from directly flowing out through the negative pressure port from the space between the sealing surface of the impeller and the inner cavity, so that the material is kept in the inner cavity and can be effectively shaped or fused, and the material utilization rate and the shaping rate are greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the trimmer technique and specifically relates to an impeller moves sealing device, in addition the utility model discloses still relate to a high-efficient trimmer of intermittent type formula thereof including above-mentioned impeller moves sealing device.
Background
The shaping machine is widely applied to industries such as anode and cathode materials, foods, additives, coatings, special carbon, magnetic materials and the like in the new energy industry, and has the effects of improving the particle size distribution range of material particles, improving the tap density of the material particles, improving the shape of the material particles to make the material particles tend to be spherical, improving the uniformity of the size of the material particles and the like;
the impeller that current plastic mainly includes barrel, shaping dish and is located barrel negative pressure port department, and impeller and shaping dish all are located the inner chamber of barrel, and all realize high-speed the rotation through motor drive, and its theory of operation is: the shaping disc rotating at a high speed drives the material particles in the inner cavity to continuously generate collision, impact, friction, shearing and the like, sharp edges and corners on the material particles can be gradually broken or are ground flat, small material particles can also be filled into gaps fused with large material particles to enable the small material particles to tend to be spherical, and the spherical material particles are gradually compacted along with continuous impact after the small material particles and the large material particles are fused, so that the shaping purpose is achieved;
meanwhile, the impeller rotating at a high speed can generate a certain centrifugal force in the inner cavity, and the shaped large or heavy finished material is subjected to a large centrifugal force, can be thrown to the outer side of the splitter ring and is not influenced by the centrifugal force to be discharged; small or light materials are subjected to small centrifugal force, and can be suspended in the middle of the impeller under the action of a negative pressure source connected with the negative pressure port and reach the next station from the negative pressure port; the rest materials can be shaped continuously in the inner cavity;
however, the existing shaping machine generally does not pay attention to the sealing between the impeller and the cylinder, and a large space is usually reserved between the cylinder and the impeller, so that part of materials in the inner cavity are directly sucked out from the space between the impeller and the inner wall of the inner cavity by a negative pressure source without shaping or fusion, and the problems of low material utilization rate and low shaping rate are caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: leave great space between impeller and the barrel in order to solve among the prior art trimmer, do not have sealing means, cause the partial material in the inner chamber not the plastic or fuse just directly from the space between impeller and the inner chamber inner wall by the suction of negative pressure source to lead to the problem that the material utilization ratio is not high, the plastic rate is low, now provide an impeller dynamic seal device, another purpose of the utility model is to provide a high-efficient trimmer of intermittent type formula including above-mentioned impeller dynamic seal device, especially applicable to the plastic of natural graphite, artificial graphite granule.
The utility model provides a technical scheme that its technical problem adopted is: the impeller dynamic sealing device is used for a shaping machine, the shaping machine is provided with a cylinder body and an impeller, a negative pressure port is arranged on an inner cavity of the cylinder body, the impeller is arranged in the inner cavity of the cylinder body and is opposite to the negative pressure port, the impeller dynamic sealing device comprises a labyrinth sealing structure which is distributed along the radial direction, the end face, close to the negative pressure port, of one end of the impeller is a sealing surface, and the labyrinth sealing structure is arranged between the inner wall, located on the side where the negative pressure port is located, in the inner cavity and the sealing surface of the impeller.
In the scheme, the labyrinth seal structure which is radially arranged is arranged between the seal surface of the impeller and the inner wall of the inner cavity, so that materials in the inner cavity can be prevented from directly flowing out through the negative pressure port from the space between the seal surface of the impeller and the inner cavity, the materials are kept in the inner cavity to be effectively shaped or fused, and the material utilization rate and the shaping rate are greatly improved.
If the clearance left between the sealing surface of the impeller and the inner wall of the inner cavity is too small, certain resistance can be easily caused to the rotation of the impeller; if the gap left between the sealing surface of the impeller and the inner wall of the inner cavity is too large, materials are easy to be clamped between the sealing surface of the impeller and the inner wall of the inner cavity, and the sealing effect is poor; how to realize then improving sealing performance under the condition that does not hinder impeller free rotation, and prevent that the material card from between the inner wall of impeller and inner chamber, this is also in fact the utility model discloses another key and difficult point that need consider, in view of this, the utility model discloses ingenious in order to overcome above-mentioned problem through following technical scheme, specifically as follows:
further, the labyrinth seal structure includes an air flow passage for communicating the outside with the labyrinth seal structure; because the inner cavity is in a negative pressure state during working, the airflow channel can suck airflow from the outside, and the airflow sucked in the airflow channel enters the labyrinth seal structure to form air seal, so that the sealing performance is improved under the condition of not hindering the free rotation of the impeller.
Further, the connecting position of the air flow passage and the labyrinth seal structure is set such that the resistance of the air flow from the air flow passage to the outermost side of the labyrinth seal structure is less than the resistance of the air flow from the air flow passage to the innermost side of the labyrinth seal structure; thereby make the air current in the air current passageway can flow towards labyrinth seal structure's outside to this hinders the material and gets into labyrinth seal structure, and then improves sealed effect.
Specifically, the radial distance H between the outermost side of the labyrinth seal structure and the airflow channel is less than the radial distance H between the innermost side of the labyrinth seal structure and the airflow channel.
Furthermore, the labyrinth seal structure comprises a sealing plate and a plurality of annular grooves formed in the sealing surface of the impeller, the annular grooves are sequentially distributed on the sealing surface of the impeller from inside to outside at intervals, annular protrusions matched with the annular grooves are arranged on the sealing plate, the annular protrusions correspond to the annular grooves one to one, the sealing plate is fixed on the cylinder body and located on the side of the negative pressure port, the annular protrusions are embedded into the annular grooves corresponding to the annular protrusions, and gaps are reserved between the annular protrusions and the annular grooves corresponding to the annular protrusions and between the sealing plate and the sealing surface of the impeller.
Further, the airflow channel is arranged on the sealing plate, a sealing cover is arranged above the cylinder body, the negative pressure port is located on the sealing cover, the sealing plate is fixed on the sealing cover, a communicating groove and a communicating hole which are communicated with each other are formed in the sealing cover, the airflow channel is communicated with the communicating groove, and the communicating hole is communicated with the outside.
The utility model also provides a high-efficient trimmer of intermittent type formula, including base, barrel and impeller, the barrel is fixed on the base, the impeller rotates and installs in the inner chamber of barrel, and with the opposition of negative pressure mouth, still includes foretell impeller dynamic seal device.
Furthermore, a rectifying disc is rotatably mounted at the bottom end of the inner cavity, the impeller is positioned at the top end of the inner cavity, the impeller is positioned in a flow distribution ring in the inner cavity, a discharge opening is formed in the side wall of the cylinder body, and a discharge valve is arranged at the discharge opening; through the setting of discharge valve, can realize opening automatically or shutoff discharge opening.
Furthermore, the discharge valve comprises a valve body and an air cylinder fixed on the valve body, the valve body is fixed on the outer wall of the cylinder body, a discharge plug matched with the discharge opening is fixed at the extending end of the air cylinder, the discharge plug is blocked at the discharge opening, and the peripheral surface of the discharge plug is a conical surface; the discharging plug is pulled or pushed by the cylinder so as to open or close the discharging opening; wherein, the ejection of compact stopper that utilizes the outer peripheral face to be the circular conical surface cooperatees with the discharge opening, realizes global sealed, and the ejection of compact stopper fills up more tightly to effectively improve the sealing performance of ejection of compact stopper to the discharge opening, avoid the easy material leakage that appears in discharge opening department.
The utility model has the advantages that: the utility model discloses a high-efficient trimmer of impeller dynamic seal device and intermittent type formula thereof is through arranging the labyrinth seal structure along radially arranging between the inner wall of the sealed face of impeller and inner chamber, can prevent that the material in the inner chamber from directly flowing through the negative pressure mouth between the sealed face of impeller and the inner chamber to this keeps the material to make it can effectually be reshaped or fuse in the inner chamber, thereby improvement material utilization ratio and shaping rate by a wide margin.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic front view of an impeller dynamic sealing device used in an intermittent high-efficiency shaping machine according to the present invention;
FIG. 2 is an enlarged partial schematic view of A of FIG. 1;
FIG. 3 is a schematic side view of the dynamic sealing device for an impeller of the present invention used in an intermittent high-efficiency shaping machine;
fig. 4 is a schematic view of the middle cap of the present invention.
In the figure: 1. the device comprises a cylinder body, 1-1 parts of inner cavity, 1-2 parts of discharge opening, 2 parts of impeller, 2-1 parts of sealing surface, 2-2 parts of annular groove, 3 parts of negative pressure opening, 4 parts of airflow channel, 5 parts of sealing plate, 5-1 parts of annular bulge, 6 parts of sealing cover, 6-1 parts of communicating groove, 6-2 parts of communicating hole, 7 parts of base, 8 parts of rectifying disc, 9 parts of shunting ring, 10 parts of valve body, 11 parts of cylinder, 12 parts of discharge plug;
h: the radial distance between the outermost side of the labyrinth seal structure and the airflow channel;
h: the radial spacing between the innermost side of the labyrinth seal and the gas flow passage.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1 to 4, an impeller dynamic seal device is used for a shaping machine, the shaping machine is provided with a cylinder 1 and an impeller 2, a negative pressure port 3 is arranged on an inner cavity 1-1 of the cylinder 1, the impeller 2 is arranged in the inner cavity 1-1 of the cylinder 1 and is opposite to the negative pressure port 3, the impeller dynamic seal device comprises a labyrinth seal structure which is arranged along the radial direction, one end surface of the impeller 2 relatively close to the negative pressure port 3 is a seal surface 2-1, and the labyrinth seal structure is arranged between an inner wall of the inner cavity 1-1 on the side of the negative pressure port 3 and the seal surface 2-1 of the impeller 2.
The labyrinth seal structure comprises an airflow channel 4 for communicating the outside with the labyrinth seal structure; because the inner cavity 1-1 is in a negative pressure state during working, the airflow channel 4 can suck airflow from the outside, and the airflow sucked in the airflow channel 4 enters the labyrinth seal structure to form air seal, so that the sealing performance is improved under the condition of not obstructing the free rotation of the impeller 2.
The connecting position of the airflow channel 4 and the labyrinth seal structure is set in such a way that the resistance of airflow from the airflow channel 4 to the outermost side of the labyrinth seal structure is less than the resistance of airflow from the airflow channel 4 to the innermost side of the labyrinth seal structure; because the air current is easy to pass through the side with smaller resistance to the labyrinth seal structure, the air current in the air flow channel 4 can flow towards the outer side of the labyrinth seal structure, so that the materials are prevented from entering the labyrinth seal structure, and the sealing effect is further improved.
The radial distance H between the outermost side of the labyrinth seal structure and the airflow channel 4 is less than the radial distance H between the innermost side of the labyrinth seal structure and the airflow channel 4.
The labyrinth seal structure comprises a seal plate 5 and a plurality of annular grooves 2-2 arranged on a seal surface 2-1 of an impeller 2, the annular grooves 2-2 are sequentially distributed on the seal surface 2-1 of the impeller 2 at intervals from inside to outside, annular bulges 5-1 matched with the annular grooves 2-2 are arranged on the seal plate 5, the annular bulges 5-1 correspond to the annular grooves 2-2 one by one, the seal plate 5 is fixed on a cylinder 1 and positioned at the side of a negative pressure port 3, the annular bulges 5-1 are embedded into the annular grooves 2-2 corresponding to the annular bulges, and gaps are reserved between the annular bulges 5-1 and the annular grooves 2-2 corresponding to the annular bulges and between the seal plate 5 and the seal surface 2-1 of the impeller 2;
it is worth noting that the annular groove 2-2 and the annular protrusion 5-1 are both opposite, that is, the annular groove 2-2 can also be arranged on the sealing plate 5, and the annular protrusion 5-1 can be correspondingly arranged on the sealing surface 2-1 of the impeller 2; in addition, in the embodiment, three annular grooves 2-2 and three annular protrusions 5-1 can be arranged, and specifically, the air flow channel 4 is positioned between the outermost annular protrusion 5-1 and the middle annular protrusion 5-1.
The air flow channel 4 is arranged on a sealing plate 5, a sealing cover 6 is arranged above the cylinder body 1, the negative pressure port 3 is positioned on the sealing cover 6, the sealing plate 5 is fixed on the sealing cover 6, a communicating groove 6-1 and a communicating hole 6-2 which are mutually communicated are arranged on the sealing cover 6, the air flow channel 4 is communicated with the communicating groove 6-1, and the communicating hole 6-2 is communicated with the outside; that is, the sealing plate 5 and the sealing cover 6 are separated and can be separately processed, and in addition, the sealing plate 5 and the sealing cover 6 can be designed to be integrally formed in this embodiment.
The embodiment also provides an intermittent efficient shaping machine which comprises a base 7, a cylinder 1 and an impeller 2, wherein the cylinder 1 is fixed on the base 7, the impeller 2 is rotatably arranged in an inner cavity 1-1 of the cylinder 1 and is opposite to the negative pressure port 3, and the intermittent efficient shaping machine further comprises the impeller dynamic sealing device.
A rectifying disc 8 is rotatably mounted at the bottom end of the inner cavity 1-1, the impeller 2 is positioned at the top end of the inner cavity 1-1, the impeller 2 is positioned in a shunting ring 9 in the inner cavity 1-1, a discharge opening 1-2 is formed in the side wall of the cylinder body 1, and a discharge valve is arranged at the discharge opening 1-2; the discharge opening 1-2 can be automatically opened or closed by arranging the discharge valve.
The discharge valve comprises a valve body 10 and an air cylinder 11 fixed on the valve body 10, the valve body 10 is fixed on the outer wall of the cylinder body 1, a discharge plug 12 matched with the discharge opening 1-2 is fixed at the extending end of the air cylinder 11, the discharge plug 12 is blocked at the discharge opening 1-2, and the peripheral surface of the discharge plug 12 is a conical surface; the discharge plug 12 is pulled or pushed by the air cylinder 11, so that the discharge plug 12 opens or blocks the discharge opening 1-2; the discharge plug 12 with the conical outer peripheral surface is matched with the discharge opening 1-2 to realize peripheral surface sealing, and the discharge plug 12 is tighter and tighter, so that the sealing performance of the discharge plug 12 on the discharge opening 1-2 is effectively improved, and the material leakage at the discharge opening 1-2 is avoided.
The working principle of the embodiment is as follows:
the negative pressure port 3 can be connected with a bag-type dust collector generating negative pressure;
when the device works, the motor drives the rectifying disc 8 and the impeller 2 to rotate at a high speed, the material particles in the inner cavity 1-1 continuously generate collision, impact, friction, shearing and the like, sharp edges and corners on the material particles can be gradually broken or ground flat, small material particles can also be filled and fused into gaps of large material particles to enable the small material particles to tend to be spherical, and the spherical material particles are gradually compacted along with continuous impact after the small material particles and the large material particles are fused, so that the shaping purpose is achieved;
meanwhile, the impeller 2 rotating at a high speed can generate a certain centrifugal force in the inner cavity 1-1, and the shaped large or heavy finished product material is subjected to a large centrifugal force, is thrown to the outer side of the shunt 9 and is not influenced by the centrifugal force any more so as to be discharged; the tiny or light materials are subjected to small centrifugal force, and can be suspended in the middle of the impeller 2 under the action of the bag-type dust collector connected with the negative pressure port 3 and reach the bag-type dust collector from the negative pressure port 3; the rest materials can continue to be shaped in the inner cavity 1-1;
after the materials are shaped, the discharge valve is opened, the discharge plug 12 is removed from the discharge opening 1-2, and the shaped finished product materials outside the splitter ring 9 in the inner cavity 1-1 can be collected and taken out from the discharge opening 1-2.
Wherein, the fine or light material particles in the inner cavity 1-1 can only enter the negative pressure port 3 from the gap (the gap formed between two adjacent blades in the impeller 2) in the impeller 2;
meanwhile, because the inner cavity 1-1 is in a negative pressure state during operation, the airflow channel 4 can suck airflow from the outside and enter the labyrinth seal structure, and the airflow easily passes through the side with smaller resistance to the labyrinth seal structure, so that the airflow in the airflow channel 4 can flow towards the outer side of the labyrinth seal structure, thereby preventing materials from entering the labyrinth seal structure, further improving the sealing effect and greatly improving the material utilization rate and the shaping rate.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. An impeller dynamic seal device is used for a shaping machine, the shaping machine is provided with a cylinder body (1) and an impeller (2), a negative pressure port (3) is arranged on an inner cavity (1-1) of the cylinder body (1), the impeller (2) is arranged in the inner cavity (1-1) of the cylinder body (1) and is opposite to the negative pressure port (3), and the impeller dynamic seal device is characterized in that: the impeller dynamic sealing device comprises labyrinth sealing structures which are distributed along the radial direction, wherein the end face of one end, relatively close to the negative pressure port (3), of the impeller (2) is a sealing surface (2-1), and the labyrinth sealing structures are arranged between the inner wall, located on the side where the negative pressure port (3) is located, in the inner cavity (1-1) and the sealing surface (2-1) of the impeller (2).
2. The dynamic seal device for an impeller according to claim 1, wherein: the labyrinth seal structure comprises an airflow passage (4) for communicating the outside with the labyrinth seal structure.
3. The dynamic seal device for an impeller according to claim 2, wherein: the connecting position of the air flow channel (4) and the labyrinth seal structure is set in such a way that the resistance of the air flow from the air flow channel (4) to the outermost side of the labyrinth seal structure is less than the resistance of the air flow from the air flow channel (4) to the innermost side of the labyrinth seal structure.
4. The dynamic seal device for an impeller according to claim 3, wherein: the radial distance H between the outermost side of the labyrinth seal structure and the airflow channel (4) is less than the radial distance H between the innermost side of the labyrinth seal structure and the airflow channel (4).
5. The dynamic seal device for an impeller according to claim 2, wherein: the labyrinth seal structure comprises a seal plate (5) and a plurality of annular grooves (2-2) formed in a seal surface (2-1) of an impeller (2), the annular grooves (2-2) are sequentially distributed on the seal surface (2-1) of the impeller (2) at intervals from inside to outside, annular protrusions (5-1) matched with the annular grooves (2-2) are arranged on the seal plate (5), the annular protrusions (5-1) correspond to the annular grooves (2-2) one by one, the seal plate (5) is fixed on the side, located on a negative pressure port (3), of a cylinder body (1), the annular protrusions (5-1) are embedded into the corresponding annular grooves (2-2), and the annular protrusions (5-1) and the corresponding annular grooves (2-2) are arranged between each other, and a gap is reserved between the sealing plate (5) and the sealing surface (2-1) of the impeller (2).
6. The dynamic seal device for an impeller according to claim 5, wherein: the air flow channel (4) is arranged on the sealing plate (5), the sealing cover (6) is arranged above the barrel body (1), the negative pressure port (3) is located on the sealing cover (6), the sealing plate (5) is fixed on the sealing cover (6), the sealing cover (6) is provided with a communicating groove (6-1) and a communicating hole (6-2) which are communicated with each other, the air flow channel (4) is communicated with the communicating groove (6-1), and the communicating hole (6-2) is communicated with the outside.
7. The utility model provides an efficient intermittent shaping machine, includes base (7), barrel (1) and impeller (2), barrel (1) is fixed on base (7), impeller (2) rotate to be installed in inner chamber (1-1) of barrel (1), and with negative pressure mouth (3) opposition, its characterized in that: further comprising a dynamic seal device for the impeller according to any one of claims 1 to 6.
8. The intermittent high efficiency shaper of claim 7, wherein: the bottom of inner chamber (1-1) rotates installs fairing (8), impeller (2) are located the top of inner chamber (1-1), impeller (2) are located splitter ring (9) in inner chamber (1-1), discharge opening (1-2) have been seted up on the lateral wall of barrel (1), discharge opening (1-2) department disposes the discharge valve.
9. The intermittent high efficiency shaper of claim 8, wherein: the discharge valve comprises a valve body (10) and an air cylinder (11) fixed on the valve body (10), the valve body (10) is fixed on the outer wall of the cylinder body (1), a discharge plug (12) matched with the discharge opening (1-2) is fixed at the extending end of the air cylinder (11), the discharge plug (12) is plugged at the discharge opening (1-2), and the peripheral surface of the discharge plug (12) is a conical surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921895675.1U CN211677611U (en) | 2019-11-06 | 2019-11-06 | Impeller dynamic sealing device and intermittent efficient shaping machine thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921895675.1U CN211677611U (en) | 2019-11-06 | 2019-11-06 | Impeller dynamic sealing device and intermittent efficient shaping machine thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743466A (en) * | 2019-11-06 | 2020-02-04 | 无锡泰克勒智能科技有限公司 | Impeller dynamic sealing device and intermittent efficient shaping machine thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743466A (en) * | 2019-11-06 | 2020-02-04 | 无锡泰克勒智能科技有限公司 | Impeller dynamic sealing device and intermittent efficient shaping machine thereof |
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