CN115090516A

CN115090516A - Three-stage screening equipment for dehydrated kitchen residue

Info

Publication number: CN115090516A
Application number: CN202210869736.7A
Authority: CN
Inventors: 林斌; 潘文涛
Original assignee: Zhejiang Zhenghao Intelligent Manufacturing Co ltd
Current assignee: Zhejiang Zhenghao Intelligent Manufacturing Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-09-23

Abstract

The invention relates to a three-stage screening device for dehydrated kitchen residue, which comprises a supporting seat, a casing and a vibrating motor, wherein the supporting seat is connected with the casing through a spring, the vibrating motor is arranged on the casing, an inclined upper-layer screen and an inclined lower-layer screen are arranged in the casing, the inner space of the casing is divided into an upper space, a middle space and a lower space, the upper space, the middle space and the lower space are respectively provided with a middle-sized filtering hole and a small-sized filtering hole, a feeding hole communicated with the upper space, a first discharging hole, a second discharging hole and a third discharging hole which are respectively communicated with the three spaces are formed in the casing, and the upper-layer screen and the lower-layer screen are connected with the casing through an angle adjusting mechanism. The screening equipment of the technical scheme can realize multistage screening of the dehydrated kitchen waste slag materials, is good in screening effect, can automatically collect the screened dehydrated kitchen waste slag materials when screening, and can control the speed of screening of different machine materials, so that the collection and the screening efficiency can be obviously improved.

Description

Three-stage screening equipment for dehydrated kitchen residue

Technical Field

The invention relates to the technical field of garbage treatment equipment, in particular to three-stage screening equipment for dehydrated kitchen residues

Background

The dehydrated kitchen waste slag material is a product obtained after kitchen waste is dried, and the main components of the kitchen waste are vegetable leaves, leftovers, fruit peels and the like, so that the dehydrated kitchen waste slag material always has higher organic matter content and water content, and can be converted into available new resources through a series of subsequent treatments based on the characteristic that the dehydrated kitchen waste slag material is rich in organic matters, and can be used as fertilizer and feed after being strictly treated due to the characteristic of high organic matter content, and can also be used for producing methane for fuel or generating electricity and preparing biofuel.

The dehydrated kitchen waste slag material contains particles with different particle sizes, and needs to be screened by a screening machine, but the existing screening machine usually adopts a single screening mode, namely, the particles with different particle sizes cannot be screened in a grading way, so that the screen is often blocked by the particles with larger particle sizes, and the normal operation of screening operation is influenced, at the moment, the screen has to be cleaned in the screening machine, so that the screening machine is very inconvenient, not only the screening efficiency is low, but also certain potential safety hazards exist, the Chinese patent with the publication number of CN213887084U and the patent name of 'a kitchen waste screening device aiming at the volume size' discloses a novel screening device, which comprises a screening box, a sealing door is hinged at the front side of the screening box, a first handle is fixedly connected at the front side of the sealing door, a feeding mechanism is arranged at the top of the screening box, and vibrating machine bodies are arranged at two sides of an inner cavity of the screening box, the output fixedly connected with vibrations board of vibrations machine body, be provided with three screening mechanism between two vibrations boards, screening mechanism includes the three rubbish screening net of swing joint between two vibrations boards, the bottom of casing inner chamber is provided with collects the mechanism, the top of screening incasement chamber both sides all is provided with clearance mechanism, in operation, through opening the upper cover at first, pour surplus rubbish in kitchen into the inner chamber of screening case, then close the upper cover, open the vibrations machine body, the vibrations machine body drives clearance mechanism and begins to vibrate, clearance mechanism drives the vibrations of three rubbish screening net, and then sieve surplus rubbish in kitchen, surplus rubbish in kitchen sieves the net screening according to the three rubbish screening of volume size.

The screening machine with the structure vibrates the three garbage screening nets through the vibrating machine body, and then performs multilayer screening on garbage, so that the purpose of good screening effect is achieved, in the practical use process, only the mode that the garbage screening nets vibrate to screen through the vibrating machine is adopted, the screening effect is still poor, the collection is troublesome, an operator needs to manually control the handle II to take out screened kitchen waste, the screened kitchen waste cannot be automatically collected, the screening efficiency is greatly reduced, meanwhile, the angles of the garbage screening nets cannot be adjusted randomly, for materials with different volumes, the respective screening speeds cannot be controlled, and the collection efficiency can also be influenced, so that screening equipment capable of solving the problems is urgently needed.

Disclosure of Invention

Aiming at the above situation, in order to overcome the problems that the screening effect is still poor, the collection is troublesome, the screening speed cannot be controlled and the screening efficiency is low in the kitchen waste screening machine which drives the waste screening net to vibrate for screening through the vibrating machine in the prior art, the invention aims to provide the screening equipment which can realize multi-stage screening, has good screening effect, can automatically collect the screened dehydrated kitchen waste slag materials during screening, and can control the screening speed of different machine materials, so that the collection and screening efficiency can be obviously improved.

In order to achieve the purpose, the technical solution of the invention is as follows:

tertiary screening plant of dehydration kitchen waste material, it includes the supporting seat, casing and vibrating motor, the supporting seat passes through the spring and is connected with the casing, vibrating motor locates on the casing, be equipped with the upper screen cloth and the lower floor's screen cloth of slope in the casing, upper screen cloth and lower floor's screen cloth divide the casing inner space into the upper portion space, middle part space and lower part space, the medium-sized filtration hole of crossing has been seted up on the upper screen cloth, the small-size filtration hole of crossing has been seted up on the lower floor's screen cloth, be formed with the feed inlet that link up with the upper portion space on the casing, and respectively with the upper portion space, the first discharge gate that middle part space and lower part space link up, second discharge gate and third discharge gate, upper screen cloth and lower floor's screen cloth all are connected with an angle adjustment mechanism, and be connected with the casing through the angle adjustment mechanism that corresponds separately.

Preferably, the angle adjusting mechanism comprises an adjusting plate, a front positioning rotating rod and a rear positioning rotating rod, the front positioning rotating rod is connected to one end of the upper-layer screen and one end of the lower-layer screen, the adjusting plate is fixed to the inner wall of the casing, a plurality of hanging buckles are hinged to the adjusting plate from top to bottom in sequence, the length of each hanging buckle is gradually reduced from top to bottom, the front positioning rotating rod is buckled on any hanging buckle, and the other ends of the upper-layer screen and the lower-layer screen are rotatably connected to the inner wall of the casing through the rear positioning rotating rod.

Preferably, a first clamping groove and a second clamping groove which are parallel to each other are formed in the inner wall of the machine shell, a first flange and a second flange which are embedded in the first clamping groove and the second clamping groove are formed on the upper-layer screen and the lower-layer screen respectively, the front positioning rotating rod is arranged on the first flange and the second flange, and the adjusting plate is arranged in the first clamping groove and the second clamping groove.

Preferably, the material collecting device further comprises a fan and a material collecting component, wherein the fan and the material collecting component are oppositely arranged on the opposite side of the third material outlet, and the air outlet part of the fan and the opening part of the material collecting component are oppositely kept.

Preferably, the aggregate member is a cloth bag.

Preferably, the support base includes an upper frame, a lower frame and a plurality of support legs, the upper frame is connected with the lower frame through the support legs, one end of the spring is disposed at the upper end of the support legs, and the other end is connected with the casing.

Preferably, the support base further comprises a plurality of press feet, and the press feet are arranged at the lower end of the lower frame and are in contact with the ground.

Preferably, a first connecting column is formed at the top of the supporting leg, a second connecting column corresponding to the first connecting column is formed on the casing, and two ends of the spring are respectively sleeved on the first connecting column and the second connecting column.

Preferably, a plurality of reinforcing ribs are provided between the housing and the second connecting column.

Preferably, two vibration motors are provided.

Compared with the prior art, the invention has the advantages that:

(1) when the screening machine is used for screening, the vibrating motor is started, the shell is vibrated under the action of the vibrating motor, the spring is repeatedly compressed and stretched when the shell is vibrated, the vibration amplitude of the shell is improved under the elastic action of the spring, and compared with the prior art, the screening effect of the dehydrated kitchen waste slag can be obviously improved.

(2) The screening machine can screen the dehydrated kitchen waste slag materials with different particle sizes in a grading manner, the dehydrated kitchen waste slag materials with different particle sizes can fall into the first discharge hole, the second discharge hole and the third discharge hole by self gravity to be automatically collected, manual collection by operators is not needed, and therefore screening efficiency of the dehydrated kitchen waste slag materials can be remarkably improved.

(3) The upper screen cloth and the lower screen cloth are connected with an angle adjusting mechanism, and are connected with the casing through the angle adjusting mechanisms corresponding to each other, the angle adjusting mechanisms can adjust the gradient of the upper screen cloth and the lower screen cloth according to the requirements such as the size of the particle size of the dehydrated kitchen garbage slag material screened actually, and then the screening effect of materials with different volumes is improved.

Drawings

FIG. 1 is a schematic view of the overall construction of the screening apparatus of the present invention;

FIG. 2 is a schematic view of the overall construction of the screening apparatus of the present invention in elevation;

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the internal structure of the screening apparatus of the present invention in a front view;

FIG. 5 is an enlarged view of the portion B of FIG. 4 according to the present invention;

figure 6 is a schematic view of the overall structure of the screening apparatus of the present invention in a side view;

figure 7 is a schematic view of the internal structure of the screening apparatus of the present invention in a side view.

As shown in the figure:

1. a supporting seat; 101. an upper frame; 102. a lower frame; 103. supporting legs; 103a, a first connecting column; 2. a housing; 201. a feed inlet; 202. a first discharge port; 203. a second discharge port; 204. a third discharge port; 205. a first card slot; 206. a second card slot; 207. a second connecting column; 208. reinforcing ribs; 3. a vibration motor; 4. a spring; 5. an upper screen; 501. a medium-sized filter hole; 502. a first flange; 6. a lower layer screen mesh; 601. a small filter hole; 602. a second flange; 7. an adjusting plate; 8. a front positioning rotating rod; 9. a rear positioning rotating rod; 10. hanging and buckling; 11. a fan; 12. an aggregate member.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually arranged in when used, and are used for the convenience of description only, and do not indicate or imply that the orientations are required to have specific orientations and specific orientations, configurations and operations, and thus, the present invention is not to be construed as being limited.

As shown in fig. 1 to 7, three-stage screening equipment for dehydrated kitchen waste slag comprises a supporting seat 1, a casing 2 and a vibrating motor 3, wherein the supporting seat 1 is connected with the casing 2 through a spring 4, and is further combined into a whole, wherein the supporting frame and the spring 4 provide support for the casing 2, the casing 2 is used for screening the dehydrated kitchen waste slag, the vibrating motor 3 is arranged on the casing 2, during screening, the vibrating motor 3 is started, the casing 2 is vibrated under the action of the vibrating motor, when the casing 2 vibrates, the spring 4 is repeatedly compressed and stretched, the vibration amplitude of the casing 2 is improved through the elastic action of the spring 4, and compared with the prior art, the screening effect of the dehydrated kitchen waste slag can be obviously improved.

Wherein, the casing 2 is provided with an upper screen 5 and a lower screen 6, the upper screen 5 is provided with a medium-sized filtering hole 501, the lower screen 6 is provided with a small-sized filtering hole 601 for screening the dehydrated kitchen waste slag with different particle sizes, the casing 2 is provided with a feeding port 201 communicated with the upper space, the upper screen 5 and the lower screen 6 divide the inner space of the casing 2 into three parts of the upper space, the middle space and the lower space, the dehydrated kitchen waste slag enters the casing 2 through the feeding port 201 and firstly falls onto the upper screen 5, the dehydrated kitchen waste slag with larger particle size can not pass through the medium-sized filtering hole 501 on the upper screen 5 and is retained on the upper screen 5, the dehydrated kitchen waste slag with medium particle size, namely smaller particle size can enter into the middle space through the medium-sized filtering hole 501 until falling onto the lower screen 6, the small-sized filtering holes 601 on the lower screen 6 can only allow the dehydrated kitchen waste slag with small particle size to pass through, the dehydrated kitchen waste slag with medium particle size is retained on the lower screen 6, the dehydrated kitchen waste slag with small particle size enters the lower space, the casing 2 is also provided with a first discharge hole 202, a second discharge hole 203 and a third discharge hole 204 which are respectively communicated with the upper space, the middle space and the lower space, and the upper screen 5 and the lower screen 6 are inclined with the horizontal plane, so that the dehydrated kitchen waste slag with large particle size and the dehydrated kitchen waste slag with medium particle size retained by the upper screen 5 and the lower screen 6 can roll down along the upper screen 5 and the lower screen 6, and the first discharge hole 202 and the second discharge hole 203 are respectively positioned at the lower side of the upper screen 5 and the lower screen 6, so that the dehydrated kitchen waste slag rolled down by the upper screen 5 and the lower screen 6 can be automatically gravity, the materials directly fall into the first discharge port 202 and the second discharge port 203 for collection, and meanwhile, the third discharge port 204 is located below the casing 2, and the dehydrated kitchen waste slag materials with smaller particle sizes falling into the lower space can also be directly collected through the third discharge port 204 by self gravity.

In addition, upper screen 5 and lower floor's screen cloth 6 all are connected with an angle adjustment mechanism to be connected with casing 2 through the angle adjustment mechanism that corresponds separately, the inclination of upper screen 5 and lower floor's screen cloth 6 can be adjusted according to the needs such as size of the dehydration kitchen garbage slag charge particle diameter of actual screening to angle adjustment mechanism, and then promote the screening effect of different volume materials.

As shown in fig. 4, 5 and 7, the angle adjusting mechanism comprises an adjusting plate 7, a front positioning rotating rod 8 and a rear positioning rotating rod 9, the front positioning rotating rod 8 is connected to one end of the upper screen 5 and the lower screen 6, the adjusting plate 7 is fixed on the inner wall of the casing 2, a plurality of hanging buckles 10 are sequentially hinged on the adjusting plate 7 at intervals from top to bottom, the hanging buckles 10 are hook-shaped structures, each hanging buckle 10 can rotate around a hinge point with the adjusting plate 7, the length of each hanging buckle 10 is sequentially reduced from top to bottom, the front positioning rotating rod 8 is buckled on any hanging buckle 10, the other ends of the upper screen 5 and the lower screen 6 are rotatably connected to the inner wall of the casing 2 through the rear positioning rotating rod 9, when the angles of the upper screen 5 and the lower screen 6 are adjusted, only the upper screen 5 and the lower screen 6 need to be lifted, at this time, the upper screen 5 and the lower screen 6 can rotate through the rear positioning rotating rod 9, when rotating, anterior location bull stick 8 breaks away from and hangs the butt joint position of detaining 10, at the rotation in-process, based on hanging the rotatability of detaining 10, make upper screen cloth 5 and lower floor's screen cloth 6 can not receive when rotating and hang the blockking of detaining 10, can drive to hang and detain 10 synchronous rotations, after upper screen cloth 5 and lower floor's screen cloth 6 break away from and hang and detain 10 butt positions, hang and detain 10 and can rotate to the normal position under the action of gravity, later detain anterior location bull stick 8 again and detain 10 fixed to suitable hanging, can accomplish upper screen cloth 5 and lower floor's screen cloth 6 angle modulation.

As shown in fig. 4, 5 and 7, the inner wall of the housing 2 is provided with a first clamping groove 205 and a second clamping groove 206 which are arranged in parallel, the upper layer screen 5 and the lower layer screen 6 are respectively provided with a first flange 502 and a second flange 602 which are embedded in the first clamping groove 205 and the second clamping groove 206, the front positioning rotating rod 8 is arranged on the first flange 502 and the second flange 602, and the adjusting plate 7 is arranged in the first clamping groove 205 and the second clamping groove 206.

As shown in FIG. 4 and FIG. 7, the sieving device of the present invention further comprises a blower 11 and a collecting member 12, the blower 11 and the collecting member 12 are disposed opposite to each other on the opposite side of the third discharging port 204, and the air outlet portion of the blower 11 and the opening portion of the collecting member 12 are kept opposite to each other, since the dehydrated kitchen waste residue often contains a part of tiny plastic particles, which will pass through the dried middle-sized filtering hole 501 on the upper layer and the small-sized filtering hole 601 on the lower screen 6 along with the dehydrated kitchen waste residue with a smaller particle size, and then be discharged to the lower space, when the plastic particles are discharged to the outside from the third discharging port 204 along with the dehydrated kitchen waste residue with a smaller particle size, the blower 11 is started, based on the characteristic of the lighter weight of the plastic particles, the plastic particles can be blown directly into the collecting member 12 by wind force, and further be separated from the dehydrated kitchen waste residue with a smaller particle size, so as to realize the secondary filtration of the dehydrated kitchen waste residue with a smaller particle size, thereby improving the quality of the subsequently transformed resources.

Furthermore, the collecting component 12 is a cloth bag, and the cost of the screening and collecting link can be obviously saved based on the characteristics of low manufacturing cost and convenient transportation of the cloth bag.

As shown in fig. 1 to 4 and fig. 6 and 7, the supporting base 1 includes an upper frame 101, a lower frame 102 and a plurality of supporting legs 103, the upper frame 101 is connected to the lower frame 102 through the supporting legs 103, one end of the spring 4 is disposed at the upper end of the supporting legs 103, and the other end is connected to the casing 2.

Further, the supporting seat 1 further comprises a plurality of pressure feet, the pressure feet are arranged at the lower end of the lower portion frame 102 and are in contact with the ground, and the lower portion frame 102 can be prevented from being directly in contact with the ground to be abraded through the arrangement of the pressure feet, so that the durability of the supporting frame is improved.

As shown in fig. 3, a first connection column 103a is formed at the top of the support leg 103, a second connection column 207 corresponding to the first connection column 103a is formed on the casing 2, two ends of the spring 4 are respectively sleeved on the first connection column 103a and the second connection column 207, it is ensured that the spring 4 can keep linear compression and extension through the first connection column 103a and the second connection column 207, the deflection of the spring 4 is avoided, and further, not only the service life of the spring 4 can be prolonged, but also the casing 2 can be stably supported.

As shown in fig. 1 to 3 and fig. 6 and 7, a plurality of ribs 208 are disposed between the second connecting column 207 and the casing 2, and the ribs 208 are disposed, so that the casing 2 of the present invention has high strength, and the possibility of deformation and damage of the connecting position of the casing 2 and the spring 4 due to the elastic force of the spring 4 for a long time is reduced.

Furthermore, two vibrating motors 3 are arranged, and the arrangement of the two vibrating motors 3 can improve the vibration amplitude of the casing 2, so that the screening effect of the screening machine is further improved.

Referring to fig. 1 to 7, when the sieving machine of the present invention is used, firstly, the dehydrated kitchen waste slag is fed into the upper space through the feeding port 201 of the casing 2, the fed dehydrated kitchen waste slag is received by the upper screen 5, wherein the dehydrated kitchen waste slag with medium particle size and small particle size falls into the middle space through the middle filtering hole 501 of the upper screen 5 and is received by the lower screen 6, the dehydrated kitchen waste slag with large particle size is retained by the upper screen 5, the dehydrated kitchen waste slag with large particle size falls into the first discharging port 202 along the upper screen 5 for automatic collection, the dehydrated kitchen waste slag with small particle size falls into the lower space through the small filtering hole 601 of the lower screen 6, the dehydrated kitchen waste slag with medium particle size is retained by the lower screen 6, the dehydrated kitchen waste slag with medium particle size falls into the second discharging port 203 along the lower screen 6 for automatic collection, the dehydrated kitchen waste slag with smaller particle size is discharged outwards through the third discharge hole 204, and when discharging, the fan 11 is started, under the wind force, the plastic particles mixed in the dehydrated kitchen garbage slag can be directly blown into the aggregate member 12, and then separated from the dehydrated kitchen waste slag with smaller particle size, if the angles of the upper screen 5 and the lower screen 6 are adjusted, an operator pulls the upper screen 5 and the lower screen 6 to rotate the two screens through the rear positioning rotating rod 9, when rotating, the front positioning rotating rod 8 is separated from the butt joint position with the hanging buckle 10, and in the rotating process, after upper screen 5 and lower floor's screen cloth 6 break away from and hang and detain 10 butt positions, hang and detain 10 and can rotate to the normal position under the action of gravity, later detain anterior location bull stick 8 again and detain 10 fixed to suitable hanging, can accomplish the angle modulation of upper screen cloth 5 and lower floor's screen cloth 6.

The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. Tertiary screening equipment of surplus sediment material in dehydration kitchen, its characterized in that, it includes supporting seat (1), casing (2) and vibrating motor (3), supporting seat (1) is connected with casing (2) through spring (4), on casing (2) is located in vibrating motor (4), be equipped with upper screen cloth (5) and lower floor's screen cloth (6) of slope in casing (2), upper screen cloth (5) and lower floor's screen cloth (6) divide casing (2) inner space into upper space, middle part space and lower part space, medium-sized filtration hole (501) have been seted up on upper screen cloth (5), small-size filtration hole (601) have been seted up on lower floor's screen cloth (6), be formed with feed inlet (201) that link up with upper portion space on casing (2) to and first discharge gate (202) that link up with upper portion space, middle part space and lower part space respectively, The second discharge port (203) and the third discharge port (204), the upper screen (5) and the lower screen (6) are both connected with an angle adjusting mechanism, and are connected with the casing (2) through the angle adjusting mechanisms corresponding to each other.

2. The three-stage screening device for the dewatered kitchen waste slag according to claim 1, wherein the angle adjusting mechanism comprises an adjusting plate (7), a front positioning rotating rod (8) and a rear positioning rotating rod (9), the front positioning rotating rod (8) is connected to one end of the upper-layer screen (5) and one end of the lower-layer screen (6), the adjusting plate (7) is fixed on the inner wall of the casing (2), the adjusting plate (7) is sequentially hinged with a plurality of hanging buckles (10) from top to bottom, the hanging buckles (10) are sequentially decreased in length from top to bottom, the front positioning rotating rod (8) is buckled on any hanging buckle (10), and the other ends of the upper-layer screen (5) and the lower-layer screen (6) are rotatably connected to the inner wall of the casing (2) through the rear positioning rotating rod (9).

3. The three-stage screening device for the dewatered kitchen residue according to claim 2, wherein a first clamping groove (205) and a second clamping groove (206) are formed in the inner wall of the casing (2) in parallel, a first flange (502) and a second flange (602) embedded in the first clamping groove (205) and the second clamping groove (206) are formed on the upper-layer screen (5) and the lower-layer screen (6) respectively, the front positioning rotating rod (8) is arranged on the first flange (502) and the second flange (602), and the adjusting plate (7) is arranged in the first clamping groove (205) and the second clamping groove (206).

4. The three-stage screening apparatus for dehydrated kitchen waste according to claim 1, further comprising a fan (11) and a collecting member (12), wherein the fan (11) and the collecting member (12) are oppositely disposed at the opposite side of the third discharging port (204), and the air outlet portion of the fan (11) and the opening portion of the collecting member (12) are maintained to be opposite.

5. The three-stage screening device for dehydrated kitchen waste according to claim 4, wherein the collecting member (12) is a cloth bag.

6. The three-stage screening device for the dehydrated kitchen residue according to claim 1, wherein the supporting base (1) comprises an upper frame (101), a lower frame (102) and a plurality of supporting legs (103), the upper frame (101) is connected with the lower frame (102) through the supporting legs (103), one end of the spring (4) is arranged at the upper end of the supporting legs (103), and the other end of the spring is connected with the casing (2).

7. The apparatus for tertiary screening of dehydrated kitchen waste according to claim 6, wherein the support base (1) further comprises a plurality of press feet provided at a lower end of the lower frame (102) and contacting the ground.

8. The three-stage screening device for the dehydrated kitchen waste according to claim 6, wherein a first connecting column (103a) is formed at the top of the supporting leg (103), a second connecting column (207) corresponding to the first connecting column (103a) is formed on the machine shell (2), and two ends of the spring (4) are respectively sleeved on the first connecting column (103a) and the second connecting column (207).

9. The three-stage screening device for dehydrated kitchen residues according to claim 8, wherein a plurality of reinforcing ribs (208) are provided between the casing (2) and the second connecting column (207).

10. The tertiary screening device of dewatered kitchen residue according to claim 1, characterized in that there are two vibrating motors (3) provided.