CN110756428B

CN110756428B - Diamond screening device

Info

Publication number: CN110756428B
Application number: CN201911246348.8A
Authority: CN
Inventors: 王海龙
Original assignee: Jiangxi Jiande Industrial Co ltd
Current assignee: Jiangxi Jiande Industrial Co ltd
Priority date: 2019-12-08
Filing date: 2019-12-08
Publication date: 2021-04-02
Anticipated expiration: 2039-12-08
Also published as: CN110756428A

Abstract

The invention relates to a screening device, in particular to a diamond screening device. The invention aims to provide a diamond screening device which can automatically and quickly screen diamonds and does not hurt the bodies of workers. A diamond screening device comprises a water storage tank, a sliding assembly, a placing assembly, a blanking assembly, a shaking assembly and the like; the cistern left and right sides all is equipped with the slip subassembly that drives the diamond raw materials through the slip mode and carry out the screening, is equipped with between the slip subassembly and places the subassembly, places the subassembly left side and is equipped with the unloading subassembly that carries out the diamond unloading through the slip mode, is equipped with the subassembly that rocks through rotation mode transmission power on the slip subassembly, rocks the subassembly and places the subassembly and be connected. According to the invention, through the matching of the sliding component, the placing component, the blanking component and the swinging component, the diamond and impurities on the diamond are driven to swing left and right in the water storage tank for screening in the process of moving the diamond backwards.

Description

Diamond screening device

Technical Field

The invention relates to a screening device, in particular to a diamond screening device.

Background

Diamond is commonly known as "diamond". That is, the original body of diamond, which is a mineral composed of carbon elements, is an allotrope of carbon elements. Diamond is the hardest substance naturally occurring in nature. Diamond is used in a wide variety of applications, for example: artware, cutting tools in industry. Graphite can be formed into synthetic diamonds at high temperature and high pressure. Is also a precious gem. When the diamond is extracted, the diamond needs to be screened by using a screen.

At present, filter the separation through the screen cloth through the manual work in aqueous through impurity such as diamond and earth, when the screening, need artifical continuous the left and right sides rock the screen cloth, sieve out the diamond, such mode though can reach the effect to the diamond screening, but the staff need always stand in muddy aquatic, simultaneously, still need continuous round trip rock the screen cloth, the in-process work efficiency who filters is low, and the staff stands for a long time in aquatic and can cause the injury to the health.

Therefore, a diamond screening device which can automatically and quickly screen diamonds and does not hurt the bodies of workers is researched and developed.

Disclosure of Invention

In order to overcome the defects that the existing diamond screening mode needs to shake the screen continuously back and forth and can cause damage to the body, the invention aims to provide the diamond screening device which can automatically and quickly screen the diamond and can not damage the body of a worker.

The technical scheme of the invention is as follows: a diamond screening device comprising: a reservoir; the sliding assemblies are arranged on the left side and the right side of the reservoir and drive the diamond raw materials to be screened in a sliding mode; a placing component arranged between the sliding components; the blanking assembly is arranged on the left side of the placing assembly and carries out diamond blanking in a sliding mode; and the shaking assembly is arranged on the sliding assembly and transmits power in a rotating mode.

In addition, it is especially preferred that the sliding assembly includes arc guide arm, first sliding sleeve and U type pole, and the cistern left and right sides all is equipped with the arc guide arm, and the gliding style is equipped with first sliding sleeve on the arc guide arm, is equipped with U type pole on the first sliding sleeve.

In addition, it is especially preferred that, place the subassembly including the horizontal pole, first guide pin bushing, first slide bar, first spring, first arc pole, place the frame, second arc pole and cowl, be equipped with the horizontal pole on the U type pole, both sides all are equipped with first guide pin bushing around the horizontal pole, all slidingtype is equipped with first slide bar in the first guide pin bushing, be connected with first spring between first slide bar and the first guide pin bushing, the rotary type is equipped with first arc pole between the first slide bar of front side, be equipped with second arc pole between the first slide bar of rear side, be equipped with on the first arc pole and place the frame, be equipped with cowl on the second arc pole, place frame and cowl cooperation.

In addition, it is especially preferred that the blanking assembly includes a second guide sleeve, a second slide bar, a second spring and a fixture block, the first arc-shaped bar is provided with a groove, the fixture block is slidably arranged in the groove, the left side of the fixture block is provided with the second slide bar, the second slide bar is slidably provided with the second guide sleeve, the second guide sleeve is connected with the first slide bar at the front side, and the second spring is connected between the second guide sleeve and the fixture block.

In addition, particularly preferably, the rocking component comprises an installation rod, a square frame, a straight bar guide rod, a second sliding sleeve, a first rotating shaft, a gear, a rack, a shaft sleeve, a first belt pulley, an installation plate, a second rotating shaft, a second belt pulley, a first flat belt, a cam, a sliding block and a connecting rod, wherein the installation rod is arranged on each first sliding rod, the square frame is arranged between the tops of the installation rods, the straight bar guide rod is arranged on the right side of the reservoir, the second sliding sleeve is arranged on the straight bar guide rod in a sliding manner, the first rotating shaft is rotatably arranged on the right side of the second sliding sleeve, the gear is arranged at the bottom of the first rotating shaft, the rack is arranged on the right side of the reservoir, the shaft sleeve is arranged on the first rotating shaft and connected with the first sliding sleeve, the first belt pulley is arranged on the top of the first rotating shaft, the installation plate is arranged on the upper, second pivot top is equipped with the second belt pulley, winds between second belt pulley and the first belt pulley and has first flat belt, and second pivot bottom is equipped with the cam, and cam and square frame cooperation, both sides all have the spout around the mounting panel bottom, and the spout internal sliding formula is equipped with the slider, and the slider bottom is equipped with the connecting rod, and the connecting rod is connected with square frame.

In addition, especially preferred, still including the contact bar, first wedge, the arc connecting rod, the arc slide bar, the third guide pin bushing, the third slide bar, third spring and second wedge, second slide bar left side is equipped with the contact bar, cistern top rear side is equipped with first wedge, the installation pole at left side rear portion is connected with the third guide pin bushing, third guide pin bushing inward sliding type is equipped with the third slide bar, be connected with the third spring between third slide bar and the third guide pin bushing, third guide pin bushing and contact bar top all are equipped with the arc connecting rod, sliding type connection has the arc slide bar between the arc connecting rod, third guide pin bushing bottom is equipped with the second wedge, the second wedge cooperates with first wedge.

In addition, it is especially preferred that the rotary type water storage device further comprises a motor, a third belt pulley, a fourth belt pulley, a second flat belt, a push rod and an arc-shaped clamping plate, wherein the motor is arranged on the rear side of the right part of the water storage tank, the third belt pulley is arranged on an output shaft of the motor, the fourth belt pulley is rotatably arranged on the front side of the right part of the water storage tank, the second flat belt is wound between the fourth belt pulley and the third belt pulley, the push rod is arranged on the second flat belt, the arc-shaped clamping plate is arranged on the lower portion of the.

The invention has the following advantages: according to the automatic feeding device, the sliding assembly, the placing assembly, the blanking assembly and the swinging assembly are matched, the diamond and impurities on the diamond are driven to swing left and right in the water storage tank for screening in the process that the diamond moves backwards, the placing frame does not need to be rotated by a worker through the matching of the contact rod and the first wedge-shaped block, the automatic blanking effect is achieved, the U-shaped rod does not need to be pushed by the worker through the matching of the motor and the arc-shaped clamping plate, the work burden is reduced, and the automation degree of the device is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a schematic perspective view of the present invention a.

FIG. 4 is a schematic perspective view of a shaking assembly according to the present invention.

Fig. 5 is a schematic perspective view of the present invention B.

Wherein the figures include the following reference numerals: 1. a water reservoir, 2, an arc-shaped guide rod, 3, a first sliding sleeve, 4, a U-shaped rod, 5, a cross rod, 6, a first guide sleeve, 7, a first sliding rod, 8, a first spring, 9, a first arc-shaped rod, 10, a placement frame, 11, a second arc-shaped rod, 12, an arc-shaped baffle, 13, a second guide sleeve, 14, a second sliding rod, 15, a second spring, 16, a clamping block, 17, a groove, 18, a mounting rod, 19, a square frame, 20, a straight bar guide rod, 21, a second sliding sleeve, 22, a first rotating shaft, 23, a gear, 24, a rack, 25, a shaft sleeve, 26, a first belt pulley, 27, a mounting plate, 28, a second rotating shaft, 29, a second belt pulley, 30, a first flat belt, 31, a cam, 32, a sliding groove, 33, a sliding block, 34, a connecting rod, 35, a contact rod, 36, a first wedge-shaped block, 37, a sliding rod, 39, a third sliding rod, 40, a third sliding rod, 41. the third spring, 42, the second wedge block, 43, the motor, 44, the third belt pulley, 45, the fourth belt pulley, 46, the second flat belt, 47, the push rod and 48, the arc-shaped clamping plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Example 1

The utility model provides a diamond screening device, as shown in fig. 1, 2, 3 and 4, including cistern 1, sliding assembly, place the subassembly, the unloading subassembly and rock the subassembly, the 1 left and right sides of cistern all is equipped with the sliding assembly that drives diamond raw materials through the slip mode and carry out the screening, be equipped with between the sliding assembly and place the subassembly, it is equipped with the unloading subassembly that carries out the diamond unloading through the slip mode to place the subassembly left side, be equipped with on the sliding assembly through the rotation mode transmission power rock the subassembly, rock the subassembly and place the subassembly and be connected.

As shown in fig. 1, the sliding assembly comprises an arc-shaped guide rod 2, a first sliding sleeve 3 and a U-shaped rod 4, the arc-shaped guide rod 2 is fixedly connected to the left and right sides of the reservoir 1 through bolts, the first sliding sleeve 3 is slidably arranged on the arc-shaped guide rod 2, and the U-shaped rod 4 is fixedly connected to the first sliding sleeve 3 through screws.

As shown in fig. 1-3, the placing assembly includes a cross rod 5, a first guide sleeve 6, a first slide rod 7, a first spring 8, a first arc rod 9, a placing frame 10, a second arc rod 11 and an arc baffle 12, the cross rod 5 is disposed on the U-shaped rod 4, the first guide sleeve 6 is disposed on the front side and the rear side of the cross rod 5, the first slide rod 7 is slidably disposed in the first guide sleeve 6, the first spring 8 is connected between the first slide rod 7 and the first guide sleeve 6, the first spring 8 is sleeved on the first slide rod 7, the first arc rod 9 is rotatably disposed between the first slide rods 7 on the front side, the second arc rod 11 is disposed between the first slide rods 7 on the rear side, the placing frame 10 is fixedly connected to the first arc rod 9 through a screw, the arc baffle 12 is disposed on the second arc rod 11, and the placing frame 10 is matched with the arc baffle 12.

As shown in fig. 2 and 3, the blanking assembly includes a second guide sleeve 13, a second slide bar 14, a second spring 15 and a fixture block 16, a groove 17 is formed on the first arc-shaped bar 9, the fixture block 16 is slidably arranged in the groove 17, the second slide bar 14 is welded on the left side of the fixture block 16, the second guide sleeve 13 is slidably arranged on the second slide bar 14, the second guide sleeve 13 is connected with the first slide bar 7 on the front side, the second spring 15 is connected between the second guide sleeve 13 and the fixture block 16, and the second spring 15 is sleeved on the second slide bar 14.

As shown in fig. 1, 4 and 5, the shaking assembly comprises a mounting rod 18, a square frame 19, a straight bar guide rod 20, a second sliding sleeve 21, a first rotating shaft 22, a gear 23, a rack 24, a shaft sleeve 25, a first belt pulley 26, a mounting plate 27, a second rotating shaft 28, a second belt pulley 29, a first flat belt 30, a cam 31, a sliding block 33 and a connecting rod 34, wherein the mounting rod 18 is arranged on each first sliding rod 7, the square frame 19 is welded between the tops of the mounting rods 18, the straight bar guide rod 20 is arranged on the right side of the reservoir 1, the second sliding sleeve 21 is slidably arranged on the straight bar guide rod 20, the first rotating shaft 22 is rotatably arranged on the right side of the second sliding sleeve 21 through a bearing seat, the gear 23 is connected to the bottom of the first rotating shaft 22, the rack 24 is arranged on the right side of the reservoir 1, the gear 24 is meshed with the gear 23, the shaft sleeve 25 is arranged on the first rotating shaft 22, the shaft, first pivot 22 upper portion is equipped with mounting panel 27 through the bearing frame, be equipped with second pivot 28 through the bearing frame rotary type on the mounting panel 27, second pivot 28 passes mounting panel 27, second pivot 28 top key connection has second belt pulley 29, around having first flat belt 30 between second belt pulley 29 and the first belt pulley 26, the welding of second pivot 28 bottom has cam 31, cam 31 and square frame 19 cooperation, both sides are all opened around mounting panel 27 bottom has spout 32, spout 32 internal sliding type is equipped with slider 33, slider 33 bottom is equipped with connecting rod 34, connecting rod 34 is connected with square frame 19.

Detailed implementation of the above embodiment: when the diamond needs to be screened, clear water is added into the reservoir 1 firstly, then the diamond is poured into the placing assembly, the sliding assembly can be pushed to move backwards on the reservoir 1, then the diamond in the placing assembly is shaken by the driving shaking assembly, the diamond is shaken and screened, when the sliding assembly moves to the rear side of the reservoir 1, the diamond screening is finished, the diamond in the placing assembly is subjected to blanking under the action of the blanking assembly, then the sliding assembly is pulled and the device on the sliding assembly is reset, the steps are repeated, and the diamond is firstly screened for the next batch.

When the diamond needs to be screened, the U-shaped rod 4 is pushed to move back and forth, and the first sliding sleeve 3 is driven to slide back and forth on the arc-shaped guide rod 2 to screen the diamond.

When the diamond needs to be placed, the worker pours the diamond into the placing frame 10, then pushes the U-shaped rod 4 to move backwards, drives the placing frame 10 and the upper device to move backwards, in the process of moving the placing frame 10 backwards, under the action of the shaking assembly and the first spring 8, the placing frame 10 and the raw materials in the placing frame can continuously shake, further drives the diamond to be screened in the reservoir 1, and after the diamond is screened, the U-shaped rod 4 is pulled to reset forwards, and drives the placing frame 10 and the upper device to reset.

When the screened diamonds need to be discharged, the second slide bar 14 is pulled to slide outwards in the second guide sleeve 13, the clamping block 16 is further driven to be separated from the groove 17, the second spring 15 is compressed, the placing frame 10 swings backwards, the screened diamonds in the placing frame 10 are poured out, then the placing frame 10 is pushed to reset, the second slide bar 14 can be loosened, the second slide bar 14 is driven to reset in the second guide sleeve 13 under the action of the second spring 15, the placing frame 10 is clamped, and then the U-shaped rod 4 and the upper device thereof are pulled to reset.

When the diamonds are required to be screened, the U-shaped rod 4 is pushed to move forwards to drive the first sliding sleeve 3 to move backwards and drive the shaft sleeve 25 to move backwards, thereby driving the first rotating shaft 22 to move backwards, so that under the cooperation of the gear 23 and the rack 24, the gear 23 rotates to drive the first rotating shaft 22 to rotate, thereby driving the first belt pulley 26 to rotate, driving the second belt pulley 29 to rotate through the first flat belt 30, so as to drive the second rotating shaft 28 to rotate and drive the cam 31 to rotate, at this time, when the cam 31 contacts with the square frame 19, the square frame 19 is driven to move left and right, and then the cam 31 is matched with the first spring 8 to drive the first arc-shaped rod 9 to swing left and right, thereby the diamond that the drive was placed in the frame 10 rocks about, so, when placing the diamond backward motion in the frame 10, drives the diamond and rocks about in cistern 1 and sieve.

Example 2

On the basis of the embodiment 1, as shown in fig. 1-3, in order to make the use of the device more convenient, the device further comprises a contact rod 35, a first wedge block 36, an arc-shaped connecting rod 37 and an arc-shaped sliding rod 38, the water storage device comprises a third guide sleeve 39, a third slide rod 40, a third spring 41 and a second wedge-shaped block 42, a contact rod 35 is arranged on the left side of the second slide rod 14, the first wedge-shaped block 36 is welded on the rear side of the top of the water storage tank 1, the left rear mounting rod 18 is connected with the third guide sleeve 39, the third slide rod 40 is arranged in the third guide sleeve 39 in a sliding mode, the third spring 41 is connected between the third slide rod 40 and the third guide sleeve 39, the third spring 41 is sleeved on the third slide rod 40, arc-shaped connecting rods 37 are arranged on the tops of the third guide sleeve 39 and the contact rod 35, the arc-shaped slide rods 38 are connected between the arc-shaped connecting rods 37 in a sliding mode, the second wedge-shaped block 42 is arranged at the bottom of the third guide.

As shown in fig. 1 and 5, in order to improve the automation degree of the device, the device further comprises a motor 43, a third belt pulley 44, a fourth belt pulley 45, a second flat belt 46, a push rod 47 and an arc-shaped clamping plate 48, the rear side of the right part of the reservoir 1 is fixedly connected with the motor 43 through a bolt, the output shaft of the motor 43 is provided with the third belt pulley 44, the front side of the right part of the reservoir 1 is rotatably provided with the fourth belt pulley 45, the second flat belt 46 is wound between the fourth belt pulley 45 and the third belt pulley 44, the second flat belt 46 is provided with the push rod 47, the rotating joint at the lower part of the first rotating shaft 22 is welded with the arc-shaped clamping plate 48, and.

Detailed implementation of the above embodiment: when the placing frame 10 moves backwards to drive the contact rod 35 to move backwards, and the contact rod 35 is in contact with the first wedge-shaped block 36, the second spring 15 is compressed to drive the second slide rod 14 and the device thereon to move outwards, and simultaneously, the front arc-shaped connecting rod 37 is driven to move outwards, the arc-shaped connecting rod 37 is driven to move outwards by the arc-shaped slide rod 38, so as to drive the third slide rod 40 to slide outwards in the third guide sleeve 39, the third spring 41 is compressed, so as to drive the second wedge-shaped block 42 to be separated from the placing frame 10, so that the diamond in the placing frame 10 is poured out, when the placing frame 10 is pulled to reset forwards, the contact rod 35 is separated from the first wedge-shaped block 36, the arc-shaped connecting rod 37 and the device thereon are reset under the action of the second spring 15 and the third spring 41, so that the second wedge-shaped block 42 is reset, the placing frame 10 is pushed to reset, and thus, a worker does not need to rotate the placing, accomplish the effect of automatic unloading, place frame 10 simultaneously and can fix by automatic re-setting, equipment usage is more convenient.

When screening the diamond to needs, starter motor 43 rotates, it rotates to drive third belt pulley 44, it rotates to move fourth belt pulley 45 through second flat belt 46, and then drive push rod 47 and the contact of arc cardboard 48, it moves backward to drive first pivot 22, when arc cardboard 48 moves the rearmost side, push rod 47 continues to rotate and drives arc cardboard 48 and move forward and reset, thereby push rod 47 breaks away from arc cardboard 48, after finishing the diamond screening, close motor 43 can, so, just need not the staff and promote U type pole 4, the burden of work has been reduced, the degree of automation of equipment has been improved.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A diamond screening device is characterized by comprising:

a reservoir (1);

the sliding assemblies are arranged on the left side and the right side of the reservoir (1) and drive diamond raw materials to be screened in a sliding mode;

a placing component arranged between the sliding components;

the blanking assembly is arranged on the left side of the placing assembly and carries out diamond blanking in a sliding mode;

the swinging assembly is arranged on the sliding assembly and transmits power in a rotating mode;

the sliding assembly comprises an arc-shaped guide rod (2), a first sliding sleeve (3) and a U-shaped rod (4), the arc-shaped guide rod (2) is arranged on each of the left side and the right side of the water storage tank (1), the first sliding sleeve (3) is arranged on the arc-shaped guide rod (2) in a sliding mode, and the U-shaped rod (4) is arranged on the first sliding sleeve (3);

the placing component comprises a cross rod (5), a first guide sleeve (6), a first slide bar (7), a first spring (8), a first arc-shaped rod (9), a placing frame (10), a second arc-shaped rod (11) and an arc-shaped baffle (12), be equipped with horizontal pole (5) on U type pole (4), both sides all are equipped with first guide pin bushing (6) around horizontal pole (5), all slidingtype is equipped with first slide bar (7) in first guide pin bushing (6), be connected with first spring (8) between first slide bar (7) and first guide pin bushing (6), the rotary type is equipped with first arc pole (9) between first slide bar (7) of front side, be equipped with second arc pole (11) between first slide bar (7) of rear side, be equipped with on first arc pole (9) and place frame (10), be equipped with cowl (12) on second arc pole (11), place frame (10) and cowl (12) cooperation.

2. A diamond screening apparatus according to claim 1, wherein: the blanking assembly comprises a second guide sleeve (13), a second sliding rod (14), a second spring (15) and a clamping block (16), a groove (17) is formed in the first arc-shaped rod (9), the clamping block (16) is arranged in the groove (17) in a sliding mode, the second sliding rod (14) is arranged on the left side of the clamping block (16), the second guide sleeve (13) is arranged on the second sliding rod (14) in a sliding mode, the second guide sleeve (13) is connected with the first sliding rod (7) on the front side, and the second spring (15) is connected between the second guide sleeve (13) and the clamping block (16).

3. A diamond screening apparatus according to claim 2, wherein: the shaking component comprises a mounting rod (18), a square frame (19), a straight bar guide rod (20), a second sliding sleeve (21), a first rotating shaft (22), a gear (23), a rack (24), a shaft sleeve (25), a first belt pulley (26), a mounting plate (27), a second rotating shaft (28), a second belt pulley (29), a first flat belt (30), a cam (31), a sliding block (33) and a connecting rod (34), wherein the mounting rod (18) is arranged on each first sliding rod (7), the square frame (19) is arranged between the tops of the mounting rods (18), the straight bar guide rod (20) is arranged on the right side of the reservoir (1), the second sliding sleeve (21) is slidably arranged on the straight bar guide rod (20), the first rotating shaft (22) is rotatably arranged on the right side of the second sliding sleeve (21), the gear (23) is arranged at the bottom of the first rotating shaft (22), the rack (24) is arranged on the right side of the reservoir (1), and the, be equipped with axle sleeve (25) on first pivot (22), axle sleeve (25) are connected with first sliding sleeve (3), first pivot (22) top is equipped with first belt pulley (26), first pivot (22) upper portion is equipped with mounting panel (27) through the bearing frame, the last rotation type of mounting panel (27) is equipped with second pivot (28), mounting panel (27) are passed in second pivot (28), second pivot (28) top is equipped with second belt pulley (29), around having first flat belt (30) between second belt pulley (29) and first belt pulley (26), second pivot (28) bottom is equipped with cam (31), cam (31) and square frame (19) cooperation, both sides all opened spout (32) around mounting panel (27) bottom, be equipped with slider (33) in spout (32) slidingtype, slider (33) bottom is equipped with connecting rod (34), connecting rod (34) are connected with square frame (19).

4. A diamond screening apparatus according to claim 3, wherein: also comprises a contact rod (35), a first wedge-shaped block (36), an arc-shaped connecting rod (37), an arc-shaped sliding rod (38), a third guide sleeve (39), a third sliding rod (40), a third spring (41) and a second wedge-shaped block (42), the contact rod (35) is arranged on the left side of the second sliding rod (14), a first wedge block (36) is arranged on the rear side of the top of the water storage pool (1), the mounting rod (18) on the rear portion of the left side is connected with a third guide sleeve (39), a third sliding rod (40) is arranged in the third guide sleeve (39) in an inward sliding mode, a third spring (41) is connected between the third sliding rod (40) and the third guide sleeve (39), arc-shaped connecting rods (37) are arranged on the tops of the third guide sleeve (39) and the contact rod (35), an arc-shaped sliding rod (38) is arranged between the arc-shaped connecting rods (37), a second wedge block (42) is arranged at the bottom of the third guide sleeve (39), and the second wedge block (42) is matched.

5. A diamond screening apparatus according to claim 4, wherein: still including motor (43), third belt pulley (44), fourth belt pulley (45), the flat belt of second (46), push rod (47) and arc cardboard (48), cistern (1) right part rear side is equipped with motor (43), be equipped with third belt pulley (44) on motor (43) output shaft, cistern (1) right part front side is rotated and is equipped with fourth belt pulley (45), around having second flat belt (46) between fourth belt pulley (45) and third belt pulley (44), be equipped with push rod (47) on the flat belt of second (46), first pivot (22) lower part is equipped with arc cardboard (48), push rod (47) and arc cardboard (48) cooperation.