CN220413406U

CN220413406U - Grinding structure and biological zymogen material processing apparatus

Info

Publication number: CN220413406U
Application number: CN202223225258.0U
Authority: CN
Inventors: 夏文静
Original assignee: Nanjing Normal University Taizhou College
Current assignee: Nanjing Normal University Taizhou College
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2024-01-30
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a grinding structure and a biological zymogen material processing device, which relate to the field of biological zymogen material processing devices and comprise an equipment main body, wherein the equipment main body comprises an enzymolysis tank and a driving base, the driving base is arranged at the bottom of the enzymolysis tank, the enzymolysis tank comprises a tank body, two sides of the bottom of the tank body are connected with feeding components, two sides of the top of the driving base are respectively provided with a supporting frame, the top of the supporting frame is also provided with a transmission component, a group of transmission components drive two groups of grinding shafts to synchronously run through the transmission component, synchronous grinding treatment is conveniently carried out on raw materials for extracting biological enzymes such as natural plants and the like which are put into the two parts, and the two groups of baffle plates can be driven to slowly rotate at one side of the inner cavity of a crushing hopper when the first driving motor rotates, so that corresponding adjustment can be made for the speed of raw materials for extracting the natural plants and the like of the biological enzymes according to the use condition, and the energy consumption of biological enzymolysis processing can be effectively reduced.

Description

Grinding structure and biological zymogen material processing apparatus

Technical Field

The utility model relates to the technical field of biological zymogen material processing devices, in particular to a grinding structure and a biological zymogen material processing device.

Background

The biological enzymolysis technology comprises two aspects of enzymatic extraction (also called enzymatic reaction extraction) and enzymatic separation and refining. The technology is carried out on the basis of traditional extraction of natural plant components, and can be completed by using conventional extraction equipment, and the technology is simple and convenient to operate and low in cost. The enzymatic extraction is based on the composition of plant cell walls, and the characteristic of high specificity of enzyme reaction is utilized to select corresponding enzymes, hydrolyze or degrade the components of the cell walls (cellulose, hemicellulose and pectic substance), destroy the cell wall structure, and dissolve the components in the cells, suspension or glue in the solvent, thereby achieving the extraction purpose and being beneficial to improving the extraction rate of the components. At present, the structural design of an enzymolysis treatment device used for processing biological enzymes is too single, raw materials such as natural plants for extracting the biological enzymes cannot be crushed, and the speed of raw materials discharged by an enzymolysis tank cannot be correspondingly adjusted according to the use condition.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the utility model, which should not be used to limit the scope of the utility model.

The present utility model has been made in view of the above and/or existing problems occurring in the prior art.

Therefore, it is an object of the present utility model to provide a crushing structure for crushing raw materials such as natural plants to be extracted with biological enzymes, and the enzymes can be adjusted accordingly to the rate of raw material discharge depending on the use.

In order to solve the technical problems, the utility model provides the following technical scheme: a grinding structure of a grinding machine, which comprises a grinding machine, comprising the steps of (a) a step of,

the feeding assembly comprises a crushing hopper, a sealing cover is arranged at the top of the crushing hopper, one side of the crushing hopper is connected with a second belt pulley, and a discharging regulator is further arranged at one side of the crushing hopper away from the second belt pulley; and the transmission assembly comprises a transmission box, a second driving motor is arranged in the middle of the transmission box, fourth belt pulleys are arranged on two sides of the second driving motor, and a second transmission belt is further connected between the fourth belt pulleys and the second belt pulleys.

Based on the technical characteristics: the speed of discharging raw materials such as natural plants for extracting biological enzymes in the crushing hopper into the tank body can be regulated by additionally arranging a blanking regulator on one side of the crushing hopper; through the second drive belt connected between fourth belt pulley and second belt pulley, can synchronous drive two sets of crushing bucket internally mounted's grinding axle rotation, conveniently carry out synchronous grinding to the raw and other raw materials of extracting biological enzyme of two places inputs.

As a preferred embodiment of the grinding structure according to the utility model, wherein: and one side of the second belt pulley is provided with a grinding shaft, and the grinding shaft is positioned in the inner cavity of the crushing hopper.

Based on the technical characteristics: the crushing shaft is additionally arranged at one side of the second belt pulley, so that the raw materials such as natural plants and the like for extracting biological enzymes in the crushing hopper can be crushed.

As a preferred embodiment of the grinding structure according to the utility model, wherein: the bottom of unloading regulator is connected with the striker plate, the striker plate is located broken inner chamber one side of fighting, the top of unloading regulator is connected with the third belt pulley, still be connected with first drive belt between third belt pulley and the first belt pulley.

Based on the technical characteristics: through the first driving belt connected between the third belt pulley and the first belt pulley, the two groups of baffle plates can be driven to slowly rotate at one side of the inner cavity of the crushing hopper, and the speed of discharging raw materials such as natural plants for extracting biological enzymes can be correspondingly adjusted according to the use condition.

As a preferred embodiment of the grinding structure according to the utility model, wherein: the transmission case comprises a case body, a case groove is formed in the middle of the case body, and an edge side plate is further arranged on one side of the case body.

Based on the technical characteristics: through box, case groove and limit board structure, conveniently with spare parts such as first driving medium, second driving medium and transmission toothed belt spacing in the inside of transmission case.

As a preferred embodiment of the grinding structure according to the utility model, wherein: the middle part of the tank is connected with a first transmission part, one end of the first transmission part is fixedly connected with the output end of a second driving motor, two sides of the first transmission part are respectively provided with a second transmission part, and the second transmission part is fixedly connected with a fourth belt pulley.

Based on the technical characteristics: because one end of the first transmission piece is fixedly connected with the output end of the second driving motor, and the second transmission piece is fixedly connected with the fourth belt pulley, when the first driving motor rotates, the two groups of fourth belt pulleys can be driven to synchronously rotate.

As a preferred embodiment of the grinding structure according to the utility model, wherein: and a driving toothed belt is further connected between the two groups of second driving parts and the first driving part, and the driving toothed belt is in meshed connection with the first driving part and the second driving part.

Based on the technical characteristics: because the transmission toothed belt is in meshed connection with the first transmission part and the second transmission part, when the second driving motor is started to run, the two groups of second transmission parts can be driven to synchronously rotate in the tank.

The utility model also aims to provide a biological zymogen material processing device which can not only improve the processing efficiency of biological enzymolysis, but also reduce the energy consumption of processing.

In order to solve the technical problems, the utility model provides the following technical scheme: the biological zymogen material handling device, comprising a grinding structure as described above, further comprises,

the device comprises a device main body, a control device and a control device, wherein the device main body comprises an enzymolysis tank and a driving base, and the driving base is arranged at the bottom of the enzymolysis tank;

the enzymolysis tank comprises a tank body, and both sides of the bottom of the tank body are connected with feeding components;

the support frame is all installed to the top both sides of drive base, the top of support frame still is provided with drive assembly.

Based on the technical characteristics: according to the scheme, when the second driving motor is started to operate, the first driving part can be driven to rotate, the first driving part, the second driving part and the driving toothed belt are in meshed connection, two groups of second driving parts can be synchronously driven to rotate, the second driving part and the fourth belt pulley are fixedly connected, the two groups of fourth belt pulleys can be synchronously driven to rotate, the second driving belt is connected between the two groups of fourth belt pulleys and the second belt pulley, and the grinding shafts synchronously driving the two groups of grinding hoppers to rotate can also realize the purpose that one group of driving parts drive the two groups of grinding shafts to synchronously operate, so that the raw materials such as natural plants for extracting biological enzymes and the like which are put into two parts can be synchronously ground;

according to the scheme, the first driving motor is additionally arranged at the bottom of the tank body, when the first driving motor is started to rotate, the stirring mechanism inside the tank body can be driven to rotate, meanwhile, the driving gears in the reduction gearbox can be driven to rotate synchronously, a transmission gear is arranged on two sides of each driving gear, each driving gear is an intermittent gear, the transmission gears are connected with the driving gears in a meshed mode, when the first driving motor rotates, two groups of transmission gears can be driven to rotate slowly, the tops of the two groups of transmission gears are connected with the first belt pulley, the first belt pulley is connected with the third belt pulley, when the first driving motor rotates, the two groups of baffle plates can be driven to rotate slowly on one side of the inner cavity of the crushing hopper, corresponding adjustment can be made on the speed of raw material discharging into natural plants for extracting biological enzymes according to use conditions, and energy consumption of biological enzymolysis processing can be effectively reduced.

As a preferred embodiment of the biological zymogen material processing apparatus according to the present utility model, wherein: the enzymolysis tank has been seted up to the inside of jar body, enzymolysis tank's inside is provided with rabbling mechanism, first driving motor is installed to rabbling mechanism's one end, first driving motor is located the bottom of jar body, the reducing gear box is still installed to the one end that rabbling mechanism kept away from first driving motor.

Based on the technical characteristics: through first driving motor, rabbling mechanism and reducing gear box structure, when first driving motor can drive the rabbling mechanism operation, can also make corresponding adjustment to the speed of raw and other materials of extracting biological enzyme's natural plant and discharging into according to the service condition.

As a preferred embodiment of the biological zymogen material processing apparatus according to the present utility model, wherein: the inside of the reduction gearbox is provided with a driving gear, two sides of the driving gear are respectively provided with a transmission gear, two groups of the transmission gears are in meshed connection with the driving gear, the two groups of the transmission gears are intermittent gears, and the tops of the two groups of the transmission gears are respectively connected with a first belt pulley.

Based on the technical characteristics: because the driving gear is an intermittent gear, and the transmission gear is meshed with the driving gear, the driving gear can drive the two groups of transmission gears to slowly rotate, and the phenomenon that the rotating speed of the baffle plate for adjusting the discharging speed is too high on one side of the inner cavity of the crushing hopper can be effectively avoided.

The utility model has the beneficial effects that:

1. according to the scheme, when the second driving motor is started to operate, the first driving part can be driven to rotate, the first driving part, the second driving part and the driving toothed belt are in meshed connection, two groups of second driving parts can be synchronously driven to rotate, the second driving part and the fourth belt pulley are fixedly connected, the two groups of fourth belt pulleys can be synchronously driven to rotate, the second driving belt is connected between the two groups of fourth belt pulleys and the second belt pulley, and the grinding shafts synchronously driving the two groups of grinding hoppers to rotate can also realize the purpose that one group of driving parts drive the two groups of grinding shafts to synchronously operate, so that the raw materials such as natural plants for extracting biological enzymes and the like which are put into two parts can be synchronously ground;

2. according to the scheme, the first driving motor is additionally arranged at the bottom of the tank body, when the first driving motor is started to rotate, the stirring mechanism inside the tank body can be driven to rotate, meanwhile, the driving gears in the reduction gearbox can be driven to rotate synchronously, a transmission gear is arranged on two sides of each driving gear, each driving gear is an intermittent gear, the transmission gears are connected with the driving gears in a meshed mode, when the first driving motor rotates, two groups of transmission gears can be driven to rotate slowly, the tops of the two groups of transmission gears are connected with the first belt pulley, the first belt pulley is connected with the third belt pulley, when the first driving motor rotates, the two groups of baffle plates can be driven to rotate slowly on one side of the inner cavity of the crushing hopper, corresponding adjustment can be made on the speed of raw material discharging into natural plants for extracting biological enzymes according to use conditions, and energy consumption of biological enzymolysis processing can be effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a general construction diagram of a biological enzyme raw material treatment apparatus.

FIG. 2 is a schematic diagram of the tank structure of the apparatus for treating a raw material of a biological enzyme.

Fig. 3 is a schematic diagram of a reduction gearbox with a grinding structure.

Fig. 4 is a schematic view of a crushing bucket of a crushing structure.

Fig. 5 is a schematic diagram of a grinding structure of a gear box.

In the drawings, the list of components represented by the various numbers is as follows:

100. an apparatus main body; 101. an enzymolysis tank; 101a, a tank body; 101a-1, an enzymolysis tank; 101a-2, a stirring mechanism; 101a-3, a first drive motor; 101a-4, a reduction gearbox; 101a-4a, drive gears; 101a-4b, transmission gears; 101a-4c, a first pulley; 101b, a feeding assembly; 101b-1, a crushing bucket; 101b-2, sealing cover; 101b-3, a second pulley; 101b-3a, grinding shaft; 101b-4, a blanking regulator; 101b-4a, a striker plate; 101b-4b, a third pulley; 101b-4c, a first drive belt; 102. a driving base; 102a, a supporting frame; 102b, a transmission assembly; 102b-1, a transmission case; 102b-1a, a box body; 102b-1b, tank; 102b-1c, side panels; 102b-1d, a first transmission member; 102b-1e; a second transmission member; 101b-1f, a driving toothed belt; 102b-2, a second drive motor; 102b-3, a fourth pulley; 102b-4, a second drive belt.

Description of the embodiments

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Examples

Referring to fig. 2, 4, 5, a first embodiment of the present utility model provides a grinding structure comprising,

the feeding component 101b comprises a crushing bucket 101b-1, a sealing cover 101b-2 is arranged at the top of the crushing bucket 101b-1, a second belt pulley 101b-3 is connected to one side of the crushing bucket 101b-1, a blanking regulator 101b-4 is further arranged on one side of the crushing bucket 101b-1, and the speed of discharging raw materials such as natural plants for extracting biological enzymes in the crushing bucket 101b-1 into the tank 101a can be regulated through the blanking regulator 101b-4 additionally arranged on one side of the crushing bucket 101 b-1.

The second pulley 101b-3 is provided with a grinding shaft 101b-3a at one side thereof, the grinding shaft 101b-3a is positioned in the inner cavity of the crushing bucket 101b-1, and raw materials such as natural plants, etc., from which biological enzymes are extracted, inside the crushing bucket 101b-1 can be ground by the grinding shaft 101b-3a additionally provided at one side of the second pulley 101 b-3.

The bottom of the blanking regulator 101b-4 is connected with a baffle plate 101b-4a, the baffle plate 101b-4a is positioned at one side of the inner cavity of the crushing bucket 101b-1, the top of the blanking regulator 101b-4 is connected with a third belt pulley 101b-4b, a first driving belt 101b-4c is further connected between the third belt pulley 101b-4b and the first belt pulley 101a-4c, and through the first driving belt 101b-4c connected between the third belt pulley 101b-4b and the first belt pulley 101a-4c, the first driving motor 101a-3 can drive the two groups of baffle plates 101b-4a to slowly rotate at one side of the inner cavity of the crushing bucket 101b-1 when rotating, and the speed of raw materials such as natural plants for extracting biological enzymes and the like discharged into the crushing bucket 101b-1 can be correspondingly adjusted according to the use condition.

The transmission assembly 102b comprises a transmission box 102b-1, a second driving motor 102b-2 is arranged in the middle of the transmission box 102b-1, a fourth belt pulley 102b-3 is arranged on two sides of the second driving motor 102b-2, a second transmission belt 102b-4 is further connected between the fourth belt pulley 102b-3 and the second belt pulley 101b-3, and the second transmission belt 102b-4 connected between the fourth belt pulley 102b-3 and the second belt pulley 101b-3 can synchronously drive grinding shafts 101b-3a arranged in the two groups of grinding hoppers 101b-1 to rotate, so that synchronous grinding treatment is conveniently carried out on raw materials such as natural plants for extracting biological enzymes and the like which are put into two places.

The transmission case 102b-1 comprises a case body 102b-1a, a case groove 102b-1b is formed in the middle of the case body 102b-1a, an edge side plate 102b-1c is further arranged on one side of the case body 102b-1a, and the first transmission piece 102b-1d, the second transmission piece 102b-1e, the transmission toothed belt 101b-1f and other parts are conveniently limited in the transmission case 102b-1 through the structures of the case body 102b-1a, the case groove 102b-1b and the edge side plate 102b-1 c.

The middle part of the tank 102b-1b is connected with a first transmission piece 102b-1d, one end of the first transmission piece 102b-1d is fixedly connected with the output end of the second driving motor 102b-2, two sides of the first transmission piece 102b-1d are respectively provided with a second transmission piece 102b-1e, the second transmission piece 102b-1e is fixedly connected with the fourth belt pulley 102b-3, and because one end of the first transmission piece 102b-1d is fixedly connected with the output end of the second driving motor 102b-2, and the second transmission piece 102b-1e is fixedly connected with the fourth belt pulley 102b-3, when the first driving motor 101a-3 rotates, two groups of fourth belt pulleys 102b-3 can be driven to synchronously rotate.

The driving toothed belts 101b-1f are further connected between the two groups of second driving members 102b-1e and the first driving member 102b-1d, the driving toothed belts 101b-1f are in meshed connection with the first driving member 102b-1d and the second driving member 102b-1e, and the driving toothed belts 101b-1f are in meshed connection with the first driving member 102b-1d and the second driving member 102b-1e, so that when the second driving motor 102b-2 is started to operate, the two groups of second driving members 102b-1e can be driven to synchronously rotate in the tank 102b-1 b.

Examples

Referring to fig. 1-2, in order to enhance the processing efficiency of biological enzymolysis and reduce the energy consumption of the processing in this embodiment, for the second embodiment of the present utility model, including,

the device main body 100 comprises an enzymolysis tank 101 and a driving base 102, wherein the driving base 102 is arranged at the bottom of the enzymolysis tank 101;

the enzymolysis tank 101 comprises a tank body 101a, and feeding components 101b are connected to two sides of the bottom of the tank body 101 a;

the support frame 102a is installed on both sides of the top of the driving base 102, the transmission component 102b is further arranged on the top of the support frame 102a, the enzymolysis tank 101a-1 is arranged in the tank body 101a, the stirring mechanism 101a-2 is arranged in the enzymolysis tank 101a-1, the first driving motor 101a-3 is installed at one end of the stirring mechanism 101a-2, the first driving motor 101a-3 is located at the bottom of the tank body 101a, the reduction gearbox 101a-4 is further installed at one end, far away from the first driving motor 101a-3, of the stirring mechanism 101a-2, the first driving motor 101a-3 can drive the stirring mechanism 101a-2 to operate, and meanwhile, the speed of raw materials such as natural plants for extracting biological enzymes and the like can be correspondingly adjusted according to use conditions.

Examples

Referring to fig. 2-4, a second embodiment of the present utility model is shown, which differs from the first embodiment in that: the driving gears 101a-4a are arranged in the reduction gearbox 101a-4, one transmission gear 101a-4b is arranged on two sides of the driving gears 101a-4a, two groups of transmission gears 101a-4b are in meshed connection with the driving gears 101a-4a, the two groups of transmission gears 101a-4b are intermittent gears, the tops of the two groups of transmission gears 101a-4b are connected with the first belt pulley 101a-4c, the driving gears 101a-4b are intermittent gears, the transmission gears 101a-4b are in meshed connection with the driving gears 101a-4a, the driving gears 101a-4a can drive the two groups of transmission gears 101a-4b to slowly rotate, and the phenomenon that the rotating speed of a baffle plate 101b-4a for adjusting the discharging speed is too high on one side of an inner cavity of the crushing hopper 101b-1 can be effectively avoided.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims

1. A grinding structure, characterized in that: comprising the steps of (a) a step of,

the feeding assembly (101 b) comprises a crushing hopper (101 b-1), a sealing cover (101 b-2) is arranged at the top of the crushing hopper (101 b-1), a second belt pulley (101 b-3) is connected to one side of the crushing hopper (101 b-1), and a blanking regulator (101 b-4) is further arranged at one side of the crushing hopper (101 b-1) away from the second belt pulley (101 b-3); the method comprises the steps of,

the transmission assembly (102 b) comprises a transmission box (102 b-1), a second driving motor (102 b-2) is arranged in the middle of the transmission box (102 b-1), fourth belt pulleys (102 b-3) are arranged on two sides of the second driving motor (102 b-2), and a second transmission belt (102 b-4) is further connected between the fourth belt pulleys (102 b-3) and the second belt pulleys (101 b-3).

2. A grinding structure as defined in claim 1, wherein: a grinding shaft (101 b-3 a) is arranged on one side of the second belt pulley (101 b-3), and the grinding shaft (101 b-3 a) is positioned in the inner cavity of the crushing hopper (101 b-1).

3. A grinding structure as defined in claim 1, wherein: the blanking device is characterized in that a baffle plate (101 b-4 a) is connected to the bottom of the blanking regulator (101 b-4), the baffle plate (101 b-4 a) is located on one side of an inner cavity of the crushing hopper (101 b-1), a third belt pulley (101 b-4 b) is connected to the top of the blanking regulator (101 b-4), and a first driving belt (101 b-4 c) is further connected between the third belt pulley (101 b-4 b) and the first belt pulley (101 a-4 c).

4. A grinding structure as defined in claim 1, wherein: the transmission case (102 b-1) comprises a case body (102 b-1 a), a case groove (102 b-1 b) is formed in the middle of the case body (102 b-1 a), and an edge side plate (102 b-1 c) is further arranged on one side of the case body (102 b-1 a).

5. The grinding structure of claim 4, wherein: the middle part of the box groove (102 b-1 b) is connected with a first transmission piece (102 b-1 d), one end of the first transmission piece (102 b-1 d) is fixedly connected with the output end of the second driving motor (102 b-2), two sides of the first transmission piece (102 b-1 d) are respectively provided with a second transmission piece (102 b-1 e), and the second transmission piece (102 b-1 e) is fixedly connected with the fourth belt pulley (102 b-3).

6. The grinding structure of claim 5, wherein: and a transmission toothed belt (101 b-1 f) is further connected between the two groups of second transmission parts (102 b-1 e) and the first transmission parts (102 b-1 d), and the transmission toothed belt (101 b-1 f) is in meshed connection with the first transmission parts (102 b-1 d) and the second transmission parts (102 b-1 e).

7. A biological zymogen material processing device, characterized in that: comprising a grinding structure according to any one of claims 1 to 6, further comprising,

an equipment main body (100) comprising an enzymolysis tank (101) and a driving base (102), wherein the driving base (102) is arranged at the bottom of the enzymolysis tank (101);

the enzymolysis tank (101) comprises a tank body (101 a), and feeding components (101 b) are connected to two sides of the bottom of the tank body (101 a);

the two sides of the top of the driving base (102) are provided with supporting frames (102 a), and the tops of the supporting frames (102 a) are also provided with transmission assemblies (102 b).

8. The biological zymogen material processing device of claim 7, wherein: the novel enzymatic hydrolysis tank is characterized in that an enzymatic hydrolysis tank (101 a-1) is arranged in the tank body (101 a), a stirring mechanism (101 a-2) is arranged in the enzymatic hydrolysis tank (101 a-1), a first driving motor (101 a-3) is arranged at one end of the stirring mechanism (101 a-2), the first driving motor (101 a-3) is located at the bottom of the tank body (101 a), and a reduction gearbox (101 a-4) is further arranged at one end, far away from the first driving motor (101 a-3), of the stirring mechanism (101 a-2).

9. The biological zymogen material processing device of claim 8, wherein: the inside of the reduction gearbox (101 a-4) is provided with a driving gear (101 a-4 a), two sides of the driving gear (101 a-4 a) are respectively provided with a transmission gear (101 a-4 b), two groups of transmission gears (101 a-4 b) are in meshed connection with the driving gear (101 a-4 a), the two groups of transmission gears (101 a-4 b) are intermittent gears, and the tops of the two groups of transmission gears (101 a-4 b) are respectively connected with a first belt pulley (101 a-4 c).