CN113824241A

CN113824241A - Vibrating screening machine

Info

Publication number: CN113824241A
Application number: CN202111105324.8A
Authority: CN
Inventors: 刘伟鹏; 邵冠宁
Original assignee: Navigat Shanghai Screening Technology Co ltd
Current assignee: Navigat Shanghai Screening Technology Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2021-12-21
Anticipated expiration: 2041-09-22
Also published as: CN113824241B

Abstract

The invention relates to a vibration screening machine, which belongs to the technical field of screening machines and comprises a base and a screen support, wherein the base is connected with the screen support through a supporting spring, a vibration motor is fixed inside the screen support, a rotating shaft is arranged inside the vibration motor, a stator winding is arranged on the inner side of the vibration motor, a rotor matched with the stator winding is arranged on the rotating shaft, bearings sleeved with the rotating shaft are respectively arranged at the upper end and the lower end of the vibration motor, a sealing ring is arranged on one side, close to the rotor, of each bearing, a sealing ring shaft hole for the rotating shaft to penetrate through is formed in each sealing ring, a plurality of annular grooves are formed in the inner wall of each sealing ring shaft hole, and the width of each annular groove close to the rotor is larger than that of the annular groove close to the corresponding bearing. Above-mentioned vibration screening machine then can form multistage gradient protection in sealing ring shaft hole department at a plurality of ring channels that sealing ring shaft hole inner wall was seted up, guarantees that the butter can harden and solidify in the position of ring channel, and the butter after the hardening can form the protective layer in the ring channel department nature, and beneficial effect is showing.

Description

Vibrating screening machine

Technical Field

The invention relates to a vibrating screening machine, and belongs to the technical field of screening machines.

Background

The sieving machine is a vibrating sieving mechanical device which utilizes the relative movement of bulk materials and a sieve surface to lead partial particles to penetrate through sieve pores and divide materials such as sand, gravel, broken stone and the like into different grades according to the particle size. The screening process of the screening machine is generally continuous, and after the screened raw materials enter the screen, the materials smaller than the size of the screen holes penetrate the screen holes and are called undersize products; material larger than the mesh size is continuously discharged from the screening surface and is referred to as oversize product. The vibrating screen mainly drives the counterweight body to rotate through the motor, so that one or more layers of screen meshes are driven to swing, and screening of materials is achieved. The vibrating screen has the characteristics of high frequency, small amplitude, positive and negative inclination of the screen surface and the screening rate, the larger the inclination of the screen surface, the higher the flow speed, and the jumping motion of the materials on the screen surface, so that the productivity and the screening efficiency are higher.

The motor in the existing sieving machine needs to drive the counterweight body to rotate, and the motor can swing and vibrate along with the counterweight body, so that higher requirements are provided for the reliability of the internal structure of the motor. Need regularly annotate the butter in most motors use and lubricate the bearing of inside, it is unusual to cause the rotor to rotate in order to prevent that the butter from getting into the rotor region of motor, need separate bearing and rotor region through the sealing washer, nevertheless because the screening machine during operation motor also can take place to sway and vibrate, the sealed effect of conventional sealing washer is not good, the butter enters into the rotor region when the motor sways easily, thereby cause the motor trouble, influence the screening machine normal work. Consequently, to the motor that the screening machine design leakproofness is good to improve the stability of motor during work when rocking, have important meaning to improving screening machine work efficiency.

Disclosure of Invention

Therefore, the invention provides the vibration motor for the screening machine, the bearing and the rotor are separated by designing the sealing ring with the annular groove, the annular groove of the sealing ring can contain the grease flowing through the bearing, the grease can be attached to the annular groove to be hardened and form a natural sealing layer, and the plurality of annular grooves can form gradient protection according to the distance from the rotor, so that the effect of preventing the grease from entering the rotor is realized. In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a vibration screening machine, includes the base and sets up the screen cloth support on the base, be connected through supporting spring between base and the screen cloth support, screen cloth support inside is fixed with vibrating motor, the inside pivot that is provided with of vibrating motor, the vibrating motor inboard is provided with stator winding, be provided with in the pivot with stator winding complex rotor, the upper and lower both ends are provided with the bearing that cup joints with the pivot respectively in the vibrating motor, one side that is close to the rotor on the bearing is provided with the sealing ring, set up the sealing ring shaft hole that supplies the pivot to pass on the sealing ring, the width that a plurality of ring channels were seted up to sealing ring shaft hole inner wall, and closed on the ring channel of rotor is greater than the width that closes on the ring channel of bearing.

As an improvement of the above, the width of the annular groove gradually increases from the bearing toward the rotor.

As the improvement of the scheme, a rotating shaft stop block is arranged at the position, close to the sealing ring shaft hole, of the rotating shaft, and a grease sealing channel is formed between the rotating shaft stop block and the sealing ring shaft hole.

As an improvement of the scheme, a shaft hole bulge is arranged on one side, close to the rotor, of the inner wall of the shaft hole of the sealing ring.

As a modification of the above, the shaft hole protrusion is connected to the annular groove adjacent to the rotor.

As an improvement of the scheme, a grease filling port is arranged on the outer side of the vibration motor, and one end of the grease filling port extends into the vibration motor to form a grease channel pointing to the bearing; the bearing comprises an inner ring and an outer ring, the inner ring is sleeved on the rotating shaft, a bearing gap is arranged between the inner ring and the outer ring, and the grease channel is close to the bearing gap.

As an improvement of the scheme, a sealing ring counter bore is formed in the position, close to the sealing ring shaft hole, of one side of the sealing ring, and the sealing ring counter bore is communicated with the bearing gap and the grease sealing channel.

As an improvement of the scheme, the top of the screen support extends outwards to form a support top surface, the supporting spring is positioned between the base and the support top surface, and the bottom of the screen support is connected with the base through a tension spring.

As an improvement of the scheme, the top surface of the support is provided with a screen frame, the side surface of the screen frame is provided with a discharge hole, the top of the screen frame is provided with a cover body, and the cover body is provided with a feed inlet.

As an improvement of the scheme, two ends of the rotating shaft extend out of the vibration motor and then are connected with the faceplate, and a counterweight body is fixedly arranged on the faceplate.

The invention provides a vibrating screen classifier which comprises a base and a screen bracket, wherein a supporting spring is arranged between the base and the screen bracket, a vibrating motor is fixed in the screen bracket, a rotating shaft of the vibrating motor rotates to drive a counterweight body to rotate, so that the screen bracket is integrally swung and shaken, in order to prevent butter from entering the position of a rotor from a bearing in the vibrating motor through a sealing ring shaft hole of a sealing ring, an annular groove is formed in the inner wall of the sealing ring shaft hole, when the butter leaked from the bearing flows through the sealing ring shaft hole, the annular groove in the sealing ring shaft hole can contain the butter flowing through the annular groove, the lubricating property of the butter is gradually reduced after the butter is used for a certain number of times in the bearing, the butter is gradually hardened after staying for a period of time in the annular groove, and multi-stage gradient protection can be formed at the sealing ring shaft hole due to a plurality of annular grooves formed in the inner wall of the sealing ring shaft hole, the width that closes on the ring channel of rotor is the biggest, can ensure that the butter that flows here has sufficient space and time to stay, guarantees that the butter can solidify here the sclerosis, and the butter after the sclerosis can be in ring channel department natural formation protective layer, improves vibrating motor's life and the use reliability of screening machine, and beneficial effect is showing.

Drawings

FIG. 1 is a schematic illustration of a vibratory screening machine according to the present disclosure;

FIG. 2 is a schematic illustration of the internal construction of a vibratory screening machine according to the present invention;

FIG. 3 is a schematic illustration of the tension spring positioning of a vibratory screening machine according to the present disclosure;

FIG. 4 is a schematic illustration of a vibratory motor of a vibratory screening machine according to the present disclosure;

FIG. 5 is a schematic illustration of the internal construction of a vibratory motor of a vibratory screening machine according to the present disclosure;

FIG. 6 is an enlarged partial view of the seal ring of FIG. 5;

FIG. 7 is an enlarged view of a portion of FIG. 6 where the grease seal channel is located;

FIG. 8 is a schematic structural view of a rotary shaft of a vibratory motor of a vibratory screening machine according to the present invention;

FIG. 9 is a schematic view showing the internal structure of a rotary shaft of a vibratory motor of a vibratory screening machine according to the present invention;

FIG. 10 is a schematic view of a vibratory motor of a vibratory screening machine according to the present disclosure with the sealing ring viewed from the top;

FIG. 11 is a schematic view of a vibratory motor of a vibratory screening machine according to the present invention with the sealing ring viewed from the underside;

figure 12 is a schematic view of a portion of a seal ring in a vibratory motor of a vibratory screen machine according to the present disclosure.

In the figure: 10-base, 11-flanging, 12-supporting spring, 13-tension spring, 20-vibrating motor, 21-rotating shaft, 22-faceplate, 23-end cover, 24-bearing, 25-sealing ring, 26-stator winding, 27-rotor, 28-grease filling port, 29-dust ring, 30-screen support, 31-support top surface, 32-flange, 33-hook, 40-screen frame, 41-discharge port, 50-cover body, 51-feed port, 131-pull rod, 132-collar, 211-rotating shaft stopper, 212-grease sealing channel, 221-counterweight body, 231-end cover accommodating cavity, 232-end cover hole, 233-end cover step surface, 234-end cover locking bolt, 241-inner ring, 242-outer ring, 243-bearing clearance, 251-sealing ring shaft hole, 252-sealing ring mounting hole, 253-annular groove, 254-sealing ring counter bore, 255-sealing ring locking bolt, 281-butter channel and 2531-shaft hole bulge.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present specification, the terms "upper", "lower", "inner" and "outer" are used for clarity of description only, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship therebetween may be made without substantial changes in the technical content.

In the description of the embodiments that follow, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and the like are to be construed broadly and include, for example, "connected" that may be either fixedly connected or detachably connected, or integrally formed; may be a mechanical, plumbing, or electrical connection, may be indirectly connected through intervening media, may be internal to two elements, or may be in an interactive relationship with two elements, unless expressly defined otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in figures 1, 2, 4, 5 and 10, fig. 11 and 12 show that the present invention provides a vibratory screening machine, which includes a base 10 and a screen support 30 disposed on the base 10, the base 10 is connected with the screen support 30 through a support spring 12, a vibratory motor 20 is fixed inside the screen support 30, a rotating shaft 21 is disposed inside the vibratory motor 20, a stator winding 26 is disposed inside the vibratory motor 20, a rotor 27 matched with the stator winding 26 is disposed on the rotating shaft 21, bearings 24 respectively sleeved with the rotating shaft 21 are disposed at upper and lower ends inside the vibratory motor 20, a sealing ring 25 is disposed on one side of the bearing 24 close to the rotor 27, a sealing ring shaft hole 251 through which the rotating shaft 21 passes is disposed on the sealing ring 25, a plurality of annular grooves 253 are disposed on an inner wall of the sealing ring shaft hole 251, and a width of the annular groove 253 close to the rotor 27 is greater than a width of the annular groove 253 close to the bearing 24.

Be provided with screen cloth support 30 on the base 10, be connected through supporting spring 12 between screen cloth support 30 and the base 10, screen cloth support 30 is inside to be passed through flange 32 fixed vibrating motor 20, the inside pivot 21 that is provided with of vibrating motor 20, the pivot 21 both ends are stretched out and are connected with the flower disc 22 behind the vibrating motor 20 outside, the fixed counter weight body 221 that is provided with on the flower disc 22, pivot 21 rotates and drives the flower disc 22 and rotate, counter weight body 221 dead weight on the flower disc 22 is great can drive screen cloth support 30 and sway owing to inertia after rotating, after the high-speed rotation of pivot 21, screen cloth support 30 can produce the screening action.

The inner side of the vibration motor 20 is provided with a stator winding 26, the rotating shaft 21 is provided with a rotor 27 matched with the stator winding 26, the stator winding 26 generates a rotating magnetic field after being electrified and acts on the rotor 27 to drive the rotating shaft 21 to rotate, two ends of the rotating shaft 21 are respectively provided with a bearing 24, each bearing 24 comprises an inner ring 241 and an outer ring 242, and the inner ring 241 is sleeved on the rotating shaft 21. The upper end and the lower end of the vibration motor 20 are provided with end covers 23, end cover holes 232 for the bearings 24 to pass through are formed in the end covers 23, the bearings 24 sleeved with the bearings 24 are arranged inside the end covers 23, end cover accommodating cavities 231 are formed in the end covers 23, the end cover accommodating cavities 231 are communicated with the end cover holes 232, end cover step surfaces 233 are formed in the bottoms of the end cover accommodating cavities 231, and sealing rings 25 are arranged on the end cover step surfaces 233.

In the process of high-speed rotation of the bearing 24, the bearing 24 in the end cover 23 supports the rotating shaft 21, and the bearings 24 are arranged at the two ends of the rotating shaft 21, so that the rotating shaft 21 has better stability in rotation. Since the vibration motor can swing and vibrate during the operation of the screening machine, grease in the bearing 24 easily enters the area where the rotor 27 is located from the bearing 24 along with the swing of the vibration motor, and after the grease enters the area of the rotor 27, problems such as the increase of the rotation resistance of the rotor 27 and the abnormal contact of the coils of the stator winding 26 may occur, thereby causing the motor failure.

The sealing ring 25 is arranged between the bearing 24 and the rotor 27, and different from sealing elements such as sealing rings in a traditional motor, the sealing ring 25 is provided with the annular groove 253 on the inner wall of the sealing ring shaft hole 251, the number of the annular grooves 253 can be arranged in a plurality according to requirements, and the width of the annular groove 253 in the direction from the bearing 24 to the rotor 27 can be gradually increased, so that the annular groove 253 closest to the rotor 27 is widest, and the enough time for the butter flowing through the annular groove 253 can be ensured. Because the grease in the bearing 24 is rubbed and used as a lubricant for a period of time and then dried and hardened, if the grease flows from the bearing 24 to the direction of the rotor 27 through the sealing ring shaft hole 251 during the operation of the sieving machine, the existence of the annular groove 253 can increase the flowing stroke of the grease when the grease passes through the sealing ring shaft hole 251, and the grease is gradually hardened after the grease stays in the annular groove 253 for a period of time, the hardened grease can naturally form a protective layer at the position of the annular groove 253, and the protective layer has two functions: firstly, the grease can be prevented from continuously flowing to the area where the rotor 27 is located, and the vibration motor is prevented from being out of order; secondly, it is possible to improve the sealing effect of the seal ring 25 by forming a part of the seal ring 25.

Further, the width of the annular groove 253 gradually increases from the bearing 24 to the rotor 27, the annular groove 253 with the gradually changing width can form gradient protection, and the larger the width of the annular groove 253 closer to the rotor 27 is, the more difficult the grease flows into the rotor 27 is, so that the rotor 27 is protected.

As shown in fig. 8 and 9, a rotation shaft stopper 211 is disposed on the rotation shaft 21 at a position close to the sealing ring shaft hole 251, a grease sealing passage 212 is formed between the rotation shaft stopper 211 and the sealing ring shaft hole 251, and the rotation shaft stopper 211 prevents grease from flowing along the rotation shaft 21 to the rotor 27. When the rotating shaft 21 rotates at a high speed, the grease on the rotating shaft stopper 211 follows the rotating shaft 21 to rotate, and the grease on the rotating shaft stopper 211 is thrown to the position of the annular groove 253 due to the existence of centrifugal force. A shaft hole bulge 2531 is arranged on one side, close to the rotor 27, of the inner wall of the sealing ring shaft hole 251, and the shaft hole bulge 2531 is positioned at the end part of the grease sealing channel 212; the shaft hole projection 2531 is connected to the annular groove 253 adjacent to the rotor 27. The shaft hole projection 2531 can further obstruct the grease flowing in the grease sealing channel 212, and the shaft hole projection 2531 can reduce the width of the grease sealing channel 212 and improve the sealing effect of the grease sealing channel 212.

As shown in fig. 6 and 7, a grease filling port 28 is provided outside the vibration motor 20, and one end of the grease filling port 28 extends into the vibration motor 20 to form a grease passage 281 pointing to the bearing 24; the bearing 24 includes an inner ring 241 and an outer ring 242, the inner ring 241 is sleeved on the rotating shaft 21, a bearing gap 243 is provided between the inner ring 241 and the outer ring 242, and the grease passage 281 is close to the bearing gap 243. A sealing ring counter bore 254 is formed in one side of the sealing ring 25, close to the sealing ring shaft hole 251, and the sealing ring counter bore 254 is communicated with the bearing gap 243 and the butter sealing channel 212.

The sealing ring 25 is provided with a sealing ring mounting hole 252, and the sealing ring 25 is connected with the end cover 23 through a sealing ring locking bolt 255 penetrating through the sealing ring mounting hole 252. The dust ring 29 is arranged at the end cover hole 232, the dust ring 29 is sleeved on the rotating shaft 21, and the dust ring 29 is used for preventing particles such as dust and the like from entering the end cover accommodating cavity 231 from the end cover hole 232 to influence the normal rotation of the bearing 24; the housing of the vibration motor 20 is connected with the end cover 23 through an end cover locking bolt 234.

The inner ring 241 and the outer ring 242 have a bearing gap 243 therebetween, and the grease passage 281 is close to the bearing gap 243. A grease filling opening 28 is formed in the outer side of the end cover 23, one end of the grease filling opening 28 extends into the end cover 23 to form a grease channel 281 pointing to the bearing 24, and the grease channel 281 is located on one side, far away from the sealing ring 25, of the bearing 24. In the scheme, the grease filling port 28 is arranged on the outer side of the end cover 23, the grease filling port 28 is communicated with the grease channel 281, and grease enters the end cover 23 through the grease filling port 28 and the grease channel 281 and enters the bearing gap 243 of the bearing 24 from the side, far away from the sealing ring 25, of the bearing 24. Rollers may be disposed in the bearing gap 243, and the inner ring 241 and the outer ring 242 may rotate therebetween. When grease enters the bearing gap 243, friction during roller movement can be reduced.

A sealing ring counter bore 254 is formed in one side of the sealing ring 25, close to the sealing ring shaft hole 251, and the sealing ring counter bore 254 is communicated with the bearing gap 243 and the butter sealing channel 212. In the preferred embodiment, the width of the seal ring counter bore 254 is close to the width of the bearing gap 243, after the grease enters the bearing gap 243 from the grease passage 281, the grease flows downwards after being rubbed and used for a period of time in the bearing gap 243, the grease continues to flow downwards through the grease seal passage 212 after being collected by the seal ring counter bore 254, the grease temporarily stays in the groove while flowing through the annular groove 253 of the seal ring shaft hole 251, and the grease gradually solidifies to form a protective layer during staying in the annular groove 253, so that the grease is prevented from continuing to flow downwards to the position of the rotor 27. It should be noted that the annular grooves 253 are different from the spiral groove structure, and the respective annular grooves 253 are not communicated with each other.

In the above solution, as shown in fig. 2 and fig. 3, the top of the screen support 30 extends outward to form a support top surface 31, the base 10 has a flange 11, and the support spring 12 is located between the support top surface 31 and the flange 11 of the base 10. The bottom of the screen support 30 is connected with the base 10 through a tension spring 13, the bottom of the screen support 30 is provided with a hook 33, the inner wall of the base 10 is provided with a pull rod 131, the tension spring 13 is connected between the hook 33 and the pull rod 131, one end of the tension spring 13 is provided with a collar 132, and the tension spring 13 is sleeved on the hook 33 through the collar 132.

Be provided with reel 40 on support top surface 31, the reel 40 side is provided with discharge gate 41, and reel 40 can range upon range of and be provided with a plurality ofly, can realize multistage screening through a plurality of reels 40, and the material after the screening is discharged through discharge gate 41, and the reel 40 top is provided with lid 50, has seted up feed inlet 51 on the lid 50, and the material enters into the reel 40 through feed inlet 51 and sieves.

Although the present invention has been described in detail hereinabove with reference to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made to the embodiments of the present invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a vibrating screen classifier, includes base (10) and sets up screen cloth support (30) on base (10), be connected through supporting spring (12) between base (10) and screen cloth support (30), screen cloth support (30) inside is fixed with vibrating motor (20), vibrating motor (20) inside is provided with pivot (21), vibrating motor (20) inboard is provided with stator winding (26), be provided with on pivot (21) with stator winding (26) complex rotor (27), its characterized in that: the utility model discloses a vibration motor, including vibrating motor (20), upper and lower both ends are provided with bearing (24) that cup joint with pivot (21) respectively in vibrating motor (20), one side that is close to rotor (27) on bearing (24) is provided with sealing ring (25), set up sealing ring shaft hole (251) that supply pivot (21) to pass on sealing ring (25), a plurality of ring channels (253) have been seted up to sealing ring shaft hole (251) inner wall, and the width that closes on ring channel (253) of rotor (27) is greater than the width that closes on ring channel (253) of bearing (24).

2. The vibratory screen machine according to claim 1, wherein the annular groove (253) has a width that gradually increases from the bearing (24) toward the rotor (27).

3. The vibratory screen machine according to claim 1, characterized in that a shaft stopper (211) is provided on the shaft (21) at a position adjacent to the sealing ring shaft hole (251), and a grease sealing passage (212) is formed between the shaft stopper (211) and the sealing ring shaft hole (251).

4. A vibratory screen machine according to claim 3, characterised in that the inner wall of the sealing ring shaft hole (251) is provided with a shaft hole projection (2531) on the side adjacent to the rotor (27).

5. The vibratory screen machine according to claim 4, wherein the axial hole projection (2531) is connected to an annular groove (253) adjacent the rotor (27).

6. The vibratory screen machine according to claim 3, characterized in that a grease filling port (28) is provided outside the vibratory motor (20), and one end of the grease filling port (28) extends into the vibratory motor (20) to form a grease channel (281) pointing to the bearing (24); the bearing (24) comprises an inner ring (241) and an outer ring (242), the inner ring (241) is sleeved on the rotating shaft (21), a bearing gap (243) is arranged between the inner ring (241) and the outer ring (242), and the grease channel (281) is close to the bearing gap (243).

7. The vibratory screen machine according to claim 6, characterized in that a seal ring counterbore (254) is provided at a position on one side of the seal ring (25) adjacent to the seal ring shaft hole (251), the seal ring counterbore (254) communicating with the bearing gap (243) and the butter seal passage (212).

8. The vibratory screen machine according to claim 1, wherein the top of the screen support (30) extends outward to form a support top surface (31), the support spring (12) is located between the base (10) and the support top surface (31), and the bottom of the screen support (30) is connected to the base (10) through the tension spring (13).

9. The vibratory screen machine according to claim 8, characterized in that a screen frame (40) is disposed on the top surface (31) of the bracket, a discharge hole (41) is disposed on a side surface of the screen frame (40), a cover body (50) is disposed on the top of the screen frame (40), and a feed hole (51) is disposed on the cover body (50).

10. The vibrating screen machine according to claim 1, characterized in that both ends of the rotating shaft (21) extend out of the vibrating motor (20) and then are connected with the faceplate (22), and a counterweight body (221) is fixedly arranged on the faceplate (22).