阅读说明：本技术 巧克力和颗粒的混合涂挂装置和混合涂挂方法 (Chocolate and particle mixed coating device and mixed coating method ) 是由 谷晓青 温红瑞 张冲 侯文举 宋文斌 于 2019-11-25 设计创作，主要内容包括：本发明涉及巧克力和颗粒的混合涂挂装置和混合涂挂方法,采用巧克力和颗粒定量添加装置,定时定量自动添加巧克力和颗粒,防止原料的污染,缩短巧克力和颗粒的搅拌时间,有效减少了颗粒的破碎。(The invention relates to a chocolate and particle mixing and coating device and a chocolate and particle mixing and coating method.)

1. The chocolate and particle mixing and coating device comprises a chocolate quantitative adding device, a particle quantitative adding device, a chocolate mixing tank, a coating tank overflow recovery device, a control system and a liquid level controller arranged at the bottom of the chocolate mixing tank, wherein the chocolate quantitative adding device is preferably provided with a chocolate pump, and the particle quantitative adding device is preferably conveyed by a spiral conveying rod, vibration adding or belt conveying, preferably by the spiral conveying rod;

the chocolate mixing tank is used for conveying a mixture of chocolate and particles to the coating tank, and the coating tank overflow recovery device is arranged below the coating tank;

the control system is set to enable the total adding amount of the chocolate and the particles added into the chocolate mixing tank by the chocolate quantitative adding device and the particle quantitative adding device to be 1.1-1.5 times of the volume of the coating tank each time, control the chocolate mixing tank to start to convey the mixture of the chocolate and the particles to the coating tank after the chocolate and the particles are fully mixed in the chocolate mixing tank, and when the liquid level of the chocolate in the chocolate mixing tank is lower than 10mm, preferably 3-5mm, control the chocolate quantitative adding device and the particle quantitative adding device to start to quantitatively add the chocolate and the particles respectively again, stop the chocolate mixing tank to convey the mixture of the chocolate and the particles to the coating tank, and move back and forth in sequence.

2. The hybrid coating and hanging device according to claim 1, wherein the coating tank overflow recovery device is provided with a return pipe, the return pipe is arranged at the bottom of the coating tank and is used for receiving the mixture of the particles and the chocolate overflowing from the coating tank, the return pipe is provided with a return pipe discharge port, the coating tank overflow recovery device is further provided with a first rolling screen mesh belt and a second rolling screen mesh belt which are staggered below the return pipe discharge port, and a waste tank below the end of the second rolling screen mesh belt in the running direction.

3. The mixing and coating device according to claim 2, comprising a chocolate holding tank connected to the chocolate dosing device, wherein the first rolling screen belt has an initial end in the running direction below the outlet of the return pipe, and an end in the running direction above the chocolate holding tank and not beyond the edge of the chocolate holding tank.

4. The mixing and coating device according to claim 2 or 3, wherein the second rolling screen belt has an initial end in the direction of travel below the chocolate and particulate mixture passing through the first rolling screen belt and an end in the direction of travel outside the chocolate holding cylinder and above the waste tank.

5. A hybrid coating device according to any one of claims 2 to 4, wherein the first rolling screen belt has a pore size such that large particles meeting the recycling requirements can be screened out, preferably the first rolling screen belt has a pore size of 2 to 4mm, preferably 3 mm.

6. A hybrid coating device according to any one of claims 2 to 5, wherein the second rolling screen belt has a pore size such that small particles which do not meet the recycling requirements can be screened out, preferably the pore size of the second rolling screen belt is 0.3 to 1 mm.

7. A hybrid coating device according to any one of claims 2 to 6, wherein the linear speed and length of travel of the first and second rolling screen belts is such that all of the overflowing chocolate and particulates pass through the first and second rolling screen belts and all of the particulates that do not pass through the first rolling screen belt fall into the chocolate holding tank and all of the particulates that do not pass through the second rolling screen belt fall into the waste tank.

8. A hybrid coating device according to any one of claims 2 to 7, wherein the first and second rolling screen belts are provided with baffles, preferably evenly distributed, more preferably with a spacing between the baffles of 10mm to 40mm, preferably 30 mm.

9. A hybrid coating device according to any one of claims 2 to 8, wherein the first and/or second rolling screen belt is provided with a vibrator, preferably having a vibration frequency of 2 to 5 times/second, preferably 3 times/second, preferably at the back of the first and/or second rolling screen belt, more preferably at the end of the running direction of the first and second rolling screen belt.

10. A hybrid coating device according to any one of claims 2 to 9, wherein the starting end of the second rolling screen belt in the direction of travel is inclined in the direction of the chocolate holding tank, preferably at an angle of 5 to 15 °, preferably 5 to 8 °.

11. Use of a hybrid enrobing device according to any preceding claim in a method of hybrid enrobing chocolate and granules.

12. The chocolate and particle mixing and coating method comprises the steps of respectively and quantitatively adding chocolate and particles according to the required proportion of a product, conveying the chocolate and the particles to a coating groove after being fully mixed, wherein the total adding amount of the chocolate and the particles is 1.1-1.5 times of the volume of the coating groove each time, respectively and quantitatively adding the chocolate and the particles again in the mixing process of the chocolate and the particles when the liquid level of the chocolate is lower than 10mm, preferably 3-5mm, stopping conveying the mixture of the chocolate and the particles to the coating groove, and sequentially reciprocating.

13. The hybrid enrobing method of claim 12 including recovering the overflowed mixture when chocolate and particulates mixture overflows the enrobing tank.

14. A hybrid coating process according to claim 12 or 13, wherein the recovery is carried out by passing the overflowed mixture through a first and a second rolling screen belt, respectively, the first rolling screen belt having a pore size selected to screen out large particles meeting the recovery requirements, the second rolling screen belt having a pore size selected to screen out small particles not meeting the recovery requirements, the particles retained on the first rolling screen belt falling through the chocolate retained on the second rolling screen belt into a chocolate holding tank, the particles passing through the first rolling screen belt but retained on the second rolling screen belt falling into a waste tank, the chocolate in the overflowed mixture falling into the chocolate holding tank, preferably the first rolling screen belt having a pore size of 2-4mm, preferably 3mm, preferably the second rolling screen belt having a pore size of 0.3-1 mm.

15. The hybrid coating process of claim 14, wherein the first and second rolling screen belts are run at a line speed and length such that all of the overflowing chocolate and particulates pass through the first and second rolling screen belts and all of the particulates that do not pass through the first rolling screen belt fall into the chocolate holding tank and all of the particulates that do not pass through the second rolling screen belt fall into the waste tank.

16. A hybrid coating process according to claim 14 or 15, preferably wherein the first and second rolling screen belts are provided with baffles, preferably the baffles are evenly distributed, more preferably the spacing between the baffles is from 10mm to 40mm, preferably 30 mm.

17. A hybrid coating process according to any one of claims 14 to 16, wherein the first and/or second rolling screen belt is provided with a vibrator, preferably having a vibration frequency of 2 to 5 times/second, preferably 3 times/second, preferably the vibrator is provided on the back side of the first and/or second rolling screen belt, more preferably at the end of the running direction of the first and/or second rolling screen belt.

18. A hybrid coating process according to any one of claims 14 to 17, wherein the starting end of the second rolling screen belt in the direction of travel is inclined in the direction of the chocolate holding tank, preferably at an angle of 5 to 15 °, preferably 5 to 8 °.

The invention belongs to the field of the following:

the invention belongs to the field of food processing, and particularly relates to a chocolate and particle mixing coating device and a chocolate and particle mixing coating method.

Background art:

the cold drink products are coated with chocolate, wherein brown chocolate and black chocolate are mainly coated, and the added particles are the same as or similar to the color of the chocolate. There are more particles added to the mixed cookie particles in browned or black chocolate coated products, but the appearance of particles on the surface of the finished product is less visible, in large part due to particle breakage during the manufacturing process. The powder after the cookie particles are broken can also increase the viscosity of the chocolate, cause unstable gram weight in the coating process of the chocolate and influence the product quality.

The cold drink products coated with white chocolate are fewer, particularly, products with colored particles added in the white chocolate do not appear in the market, and even if the white chocolate is coated with the particles, hard particles such as nuts are selected, so that the particles are prevented from being broken. However, the nut particles have high density and high weight, are easy to sink, are coated on the surface of a product in a small amount, and cannot meet the requirement of the product which is expected to be coated by multiple particles.

The development of a cold drink product coated with white chocolate mixed color cookie particles (forming an external sense with obvious color difference contrast) is urgent to solve the problem of color staining caused by color particle breakage. The color cookie has moderate particle density, low cost and more coated particles, and is the optimal selection of coated products.

Chocolate and particles in a common chocolate heat-preservation tank are added manually, and in order to reduce the manual touch process (avoid microorganisms) and save the labor cost, one tank is filled fully every time. After the stirring is started, the chocolate heat preservation cylinder continuously circulates to the chocolate coating groove through the rotor pump, and then overflows back to the chocolate heat preservation cylinder from the chocolate coating groove, so that the reciprocating motion is continuous, particles are broken, and the labor cost is increased after a small amount of particles are added for many times.

How to avoid the particles from being broken in the chocolate in a circulating way to prevent the white chocolate from being dyed is a problem to be solved in the field, the addition amount is not easy to calculate, and the sanitation hidden trouble is increased.

The invention content is as follows:

the invention aims to solve the problems that: to avoid the particles from breaking up cyclically in the chocolate when the particles and chocolate are mixed, the chocolate is prevented from staining. The invention relates to a chocolate and particle mixing and coating device, which adopts a chocolate and particle quantitative adding device to automatically add chocolate and particles at regular time and quantity, thereby preventing the pollution of raw materials, shortening the stirring time of chocolate and particles and effectively reducing the crushing of particles.

Unless otherwise defined, the terms used in the present invention have meanings conventionally understood by those skilled in the art, and are not particularly limited.

The term "granule" as used herein refers to any granule that can be consumed in the field of food processing, such as, but not limited to, crunchy granules, nut granules, and the like, preferably crunchy granules.

The term "crisp particles" as used herein refers to shear-intolerant, agitated particles such as, but not limited to, freeze-dried fruit particles, crunchy candy particles, biscuit particles, preferably colored cookie particles.

In one aspect, the invention relates to a chocolate and particle mixing and coating device, which comprises a chocolate quantitative adding device, a particle quantitative adding device, a chocolate mixing tank, a coating tank overflow recovery device, a control system and a liquid level controller arranged at the bottom of the chocolate mixing tank.

Wherein, chocolate ration interpolation device and granule ration interpolation device set up to add chocolate and granule respectively to the chocolate mixing tank, and the chocolate mixing tank sets up to carry the mixture of chocolate and granule to scribbling the groove of hanging, scribbles the below of hanging the groove and is provided with scribbles a groove overflow recovery unit.

The control system is set to enable the chocolate quantitative adding device and the particle quantitative adding device to add chocolate and particles into the chocolate mixing tank each time, the total adding amount of the chocolate and the particles is 1.1-1.5 times of the volume of the coating tank, and coating dosage and chocolate overflow circulation supplement can be met.

In one embodiment, the control system is preferably a computer control system. The computer control system is a conventional computer control system understood by those skilled in the art, and includes a computer, a process input output interface, a man-machine interface, an external storage, a software system, and the like.

In one embodiment, a stirring blade, preferably a helical stirring blade, is provided in the chocolate mixing tank.

In one embodiment, the control system is configured to control the chocolate mixing tank to begin delivering the mixture of chocolate and particulates to the enrobing tank after the chocolate and particulates are thoroughly mixed in the chocolate mixing tank.

In one embodiment, the control system is arranged to control the chocolate dosing means and the particle dosing means to re-start dosing chocolate and particles respectively when the level of chocolate in the chocolate mixing tank is below 10mm, preferably 3-5mm, while stopping the chocolate mixing tank from delivering the chocolate and particle mixture to the coating tank, and to and fro in sequence.

In one embodiment, the mixing enrobing apparatus further comprises a level controller disposed at the bottom of the chocolate mixing tank which monitors the level of chocolate in the chocolate mixing tank.

In one embodiment, the stirring speed in the chocolate mixing tank is 5-10 rpm, preferably 7 rpm.

In one embodiment, the chocolate dosing device has a chocolate pump. The chocolate quantitative adding device quantitatively adds chocolate through a chocolate pump.

In one embodiment, the conveying mode of the particle quantitative adding device is screw conveying, vibration adding or belt conveying, and the screw conveying is preferable.

The spiral conveying rod quantitatively adds particles by adjusting the rotating speed of the rotating motor.

In one embodiment, the chocolate mixing tank has a pump which is arranged in the flow path of the chocolate in the chocolate mixing tank to the enrobing tank and which delivers 3 to 7 kg, preferably 6 kg, of chocolate and granulate mixture per minute to the enrobing tank.

A chocolate heat preservation cylinder is arranged in the chocolate quantitative adding device.

The temperature of the chocolate heat preservation cylinder is set to be 40-46 ℃.

In one embodiment, the pump is a rotodynamic pump.

In one embodiment, the coating tank overflow recovery device is provided with a return pipe, the return pipe is arranged at the bottom of the coating tank and is used for receiving the mixture of the particles and the chocolate overflowing from the coating tank, and the return pipe is provided with a return pipe discharge hole.

In one embodiment, wherein the outlet of the return tube is positioned above the chocolate mixing tank.

In another embodiment, the coating groove overflow recovery device is further provided with a first rolling screen mesh belt and a second rolling screen mesh belt which are staggered below the discharge hole of the return pipe, and a waste groove below the tail end of the second rolling screen mesh belt in the running direction.

In one embodiment, the mixing and coating device comprises a chocolate heat preservation cylinder connected with the chocolate quantitative adding device, the initial end of the first rolling screen belt in the running direction is below the discharge hole of the return pipe, and the tail end of the first rolling screen belt in the running direction is above the chocolate heat preservation cylinder and does not exceed the edge of the chocolate heat preservation cylinder.

In one embodiment, the initial end of the second rolling screen belt in the direction of travel is below the chocolate and particulate mixture passing through the first rolling screen belt, and the end of the second rolling screen belt in the direction of travel is outside the chocolate holding cylinder and above the waste chute.

In one embodiment, the first rolling screen has a pore size set to screen out large particles meeting the recovery requirement, preferably the pore size of the mesh belt of the first rolling screen is 2-4mm, preferably 3 mm.

In one embodiment, the second rolling screen band has a pore size such that it is capable of screening out small particles that do not meet the recovery requirements, preferably the second rolling screen band has a pore size of 0.3 to 1 mm.

In one embodiment, the first rolling screen belt is run at a linear speed and length such that all of the overflowing chocolate and particulates pass through the first rolling screen belt and all of the particulates that do not pass through the first rolling screen belt fall into the chocolate holding tank.

In one embodiment, the linear speed and length of travel of the second rolling screen belt is such that all chocolate and particulates passing through the first rolling screen belt pass through the second rolling screen belt sufficiently and all particulates not passing through the second rolling screen belt fall into the waste chute.

Therefore, the mixture of the chocolate and the particles overflowing from the chocolate coating groove through the return pipe flows back through the first rolling screen mesh belt and the second rolling screen mesh belt respectively, large particles meeting the requirements are separated from the chocolate through the first rolling screen mesh belt, and the particles which do not pass through the first rolling screen mesh belt directly fall into the chocolate heat preservation cylinder; the mixture of chocolate and particles passing through the first rolling screen mesh belt passes through the second rolling screen mesh belt again, small particles which do not meet the recovery requirement fall into a waste tank for retention treatment, and the chocolate in the overflowed mixture falls into a chocolate heat preservation cylinder to participate in circulation.

In one embodiment, the length of the first rolling screen belt is 400-600 mm.

In one embodiment, the length of the second rolling screen belt is 400-600 mm.

In one embodiment, the first rolling screen belt has a line speed of 50 to 120mm/s, preferably 100 mm/s.

In one embodiment, the second rolling screen belt has a line speed of 50 to 120mm/s, preferably 100 mm/s.

In a further embodiment, the first and second rolling screen bands are stainless steel rolling screen bands.

In a further embodiment, the first and second rolling screen belts are provided with spacers, preferably evenly distributed, more preferably with a spacing between the spacers of 10mm to 40mm, preferably 30 mm.

In a further embodiment, the first and/or second rolling screen belt is provided with a vibrator thereon. The vibration frequency of the vibrator is 2-5 times/second, preferably 3 times/second, the vibrator can vibrate the chocolate and the particles down, and the vibrator is preferably arranged on the back surface of the first rolling screen mesh belt and/or the second rolling screen mesh belt, and is more preferably arranged at the tail end of the running direction of the first rolling screen mesh belt and/or the second rolling screen mesh belt.

In a further embodiment, the starting end of the running direction of the second rolling screen belt is inclined towards the chocolate holding tank, preferably by an angle of 5-15 °, preferably by an angle of 5-8 °. The angle of inclination prevents chocolate from falling into the waste chute with small particles that do not meet recycling requirements.

In another aspect, the invention provides a method of mixing chocolate and particles and applying them to a enrobed surface using any of the chocolate and particle mixing enrobers described above.

In another aspect, the invention provides a method for coating chocolate and particles by mixing, which comprises the steps of respectively adding chocolate and particles in a certain proportion, quantitatively, and conveying the mixture to a coating tank after the chocolate and the particles are fully mixed, wherein the total adding amount of the chocolate and the particles is 1.1-1.5 times of the volume of the coating tank each time, and in the process of mixing the chocolate and the particles, when the liquid level of the chocolate is lower than 10mm, preferably 3-5mm, respectively adding the chocolate and the particles in a certain proportion, and stopping conveying the mixture of the chocolate and the particles to the coating tank, and repeating the steps in sequence.

In one embodiment, the method of mixing enrobing comprises, when chocolate and particulate mixture overflows from the enrobing tank, recovering the overflowing mixture.

In one embodiment, wherein the recovery is performed by passing the overflowed mixture through a first and a second rolling screen belt, respectively, the first rolling screen belt is selected to have a pore size that allows screening of large particles that meet the recovery requirements, the second rolling screen belt is selected to have a pore size that allows screening of small particles that do not meet the recovery requirements, the particles retained on the first rolling screen belt are dropped through the chocolate of the second rolling screen belt into a chocolate holding tank, the particles that pass through the first rolling screen belt but are retained on the second rolling screen belt are dropped into a waste tank, preferably the first rolling screen belt has a pore size of 2-4mm, preferably 3mm, preferably the second rolling screen belt has a pore size of 0.3-1 mm.

In one embodiment, the first and second rolling screen belts are run at a linear speed and length such that all of the overflowing chocolate and particulates pass through the first and second rolling screen belts and all of the particulates that do not pass through the first rolling screen belt fall into the chocolate holding tank and all of the particulates that do not pass through the second rolling screen belt fall into the waste bin.

In one embodiment, preferably wherein the first and second rolling screen belts are provided with baffles, preferably the baffles are evenly distributed, more preferably the spacing between the baffles is from 10mm to 40mm, preferably 30 mm.

In one embodiment, wherein the first and/or second rolling screen belt is provided with a vibrator, preferably having a vibration frequency of 2-5 times/second, preferably 3 times/second, preferably the vibrator is provided on the back side of the first and/or second rolling screen belt, more preferably at the end of the running direction of the first and/or second rolling screen belt.

In one embodiment, the starting end of the running direction of the second rolling screen belt is inclined towards the chocolate holding tank, and the inclination angle is preferably 5-15 degrees, and preferably 5-8 degrees.

Description of the drawings:

FIG. 1 shows a schematic diagram of a chocolate and particulate mixing enrobing apparatus of the present invention.

Wherein, the numbers in the figure are marked as follows:

1. a discharge pipe of the chocolate quantitative adding device;

2. a particle quantitative adding device;

3. a chocolate mixing tank;

4. a pump;

5. coating a hanging groove;

6. a return pipe;

FIG. 2 is a schematic view showing the structure of an overflow recycling device of a coating tank according to the present invention. Wherein the sequence numbers in the figure are marked as follows:

6. a return pipe; (same as FIG. 1)

7. A first rolling screen belt;

8. particles not passing through the first rolling screen belt (large particles meeting the requirements)

9. Vibrator

10. The running direction of a mesh belt of the first rolling screen;

11. a second rolling screen belt;

12. particles not passing through the second rolling screen belt (small particles not meeting the recycling requirement)

13. Vibrator

14. The running direction of the mesh belt of the second rolling screen;

15. chocolate passing through mesh belt of first rolling screen and mesh belt of second rolling screen

16. A chocolate heat preservation tank;

17. a waste chute;

the specific implementation mode is as follows:

the present invention will be described in detail with reference to specific embodiments, but these embodiments are not intended to limit the scope of the present invention, but rather to highlight the features of the present invention, which can be more easily understood by those skilled in the art, so as to more clearly explain the present invention.

Example 1

A chocolate and particle mixing coating device comprises a chocolate quantitative adding device with a chocolate pump, a particle quantitative adding device with a spiral conveying device, a chocolate mixing tank with a spiral stirring blade and a capacity of 300L, a control system, a liquid level controller arranged at the bottom of the chocolate mixing tank, a pump, a coating tank with a capacity of 70L and an overflow recovery device of the coating tank, wherein the chocolate quantitative adding device, the particle quantitative adding device and the overflow recovery device of the coating tank are all provided with discharge ports, the pump is arranged on a flowing path of chocolate in the chocolate mixing tank to the coating tank, the discharge ports of the chocolate quantitative adding device and the particle quantitative adding device are both arranged above the chocolate mixing tank, the adding amount of the chocolate quantitative adding device is 94.2L each time, the adding amount of the particle quantitative adding device each time is 10.8L, and the total amount of chocolate and particles added was 1.5 times the volume of the coating tank.

The stirring speed in the chocolate mixing tank was 7 revolutions/second. The time length of the chocolate and the particles from the feeding to the just full mixing is T1, T1 is set as the time for controlling the system to control the pump to start running after the feeding, the chocolate mixing tank continues to stir and mix, when the liquid level of the chocolate in the chocolate mixing tank is lower than 3mm, the time is recorded as T2, and the time for controlling the system to control the pump to be switched off and the time for switching on the chocolate quantitative adding device and the particle quantitative adding device again are set, so that the chocolate and the particles are respectively added in a quantitative mode and are sequentially reciprocated.

A pump delivers 6 kg of chocolate and granulate mixture per minute to the coating tank.

The temperature of the chocolate heat preservation tank is set to be 45 ℃.

The particle quantitative adding device is provided with a screw conveying device. The particle quantitative adding device quantitatively adds particles by adjusting the rotating speed of a rotating motor in the spiral conveying device.

The coating groove overflow recovery device is provided with a return pipe (a discharge port is arranged on the recovery pipe), a staggered first rolling screen mesh belt, a second rolling screen mesh belt and a waste material groove outside the chocolate heat preservation cylinder, wherein the initial end of the running direction of the first rolling screen mesh belt is arranged below the discharge port of the return pipe, the tail end of the running direction of the first rolling screen mesh belt is arranged above the chocolate heat preservation cylinder connected with the chocolate quantitative adding device and is not more than the edge of the chocolate heat preservation cylinder, the initial end of the running direction of the second rolling screen mesh belt is arranged below a mixture of chocolate and particles passing through the first rolling screen mesh belt, the tail end of the running direction of the second rolling screen mesh belt is arranged outside the chocolate cylinder and above the waste material groove, the length of the first rolling screen mesh belt is 500mm, the aperture is 3mm, and the length of the second rolling screen mesh belt is 500mm, the aperture is 0.3 mm. The first rolling screen mesh belt runs towards the direction of carrying the overflow mixture to fall into the chocolate heat preservation cylinder, the running linear speed is 100mm/s, the second rolling screen mesh belt runs towards the direction of carrying the overflow mixture passing through the first rolling screen mesh belt to fall into the waste material groove, and the running linear speed is 100 mm/s. The particles intercepted on the first rolling screen belt fall into the chocolate heat preservation cylinder through the chocolate on the second rolling screen belt, the particles which pass through the first rolling screen belt but are intercepted on the second rolling screen belt fall into the waste tank, and the chocolate in the overflowed mixture falls into the chocolate heat preservation cylinder. The first and second rolling screen belts were provided with baffles spaced 30mm apart from each other. The back of the mesh belt of the first rolling screen and the back of the mesh belt of the second rolling screen are provided with vibrators, and the vibration frequency is 3 times/second. The second rolling screen net belt inclines towards the chocolate heat preservation cylinder, and the inclination angle is 5 degrees.

The chocolate selected was melted white chocolate and the particles were brown cookie particles.

Example 2

A chocolate and particle mixing coating device comprises a chocolate quantitative adding device with a chocolate pump, a particle quantitative adding device with a spiral conveying device, a chocolate mixing tank with a spiral stirring blade and a capacity of 300L, a control system, a liquid level controller arranged at the bottom of the chocolate mixing tank, a pump, a coating tank with a capacity of 70L and an overflow recovery device of the coating tank, wherein the chocolate quantitative adding device, the particle quantitative adding device and the overflow recovery device of the coating tank are all provided with discharge ports, chocolate arranged in the chocolate mixing tank flows to the coating tank through the flow path, the discharge ports of the chocolate quantitative adding device and the particle quantitative adding device are both arranged above the chocolate mixing tank, the adding amount of the chocolate quantitative adding device is 81.9L each time, and the adding amount of the particle quantitative adding device is 9.1L each time, and the total amount of chocolate and particles added was 1.3 times the volume of the coating tank.

The stirring speed in the chocolate mixing tank was 5 revolutions/second. The time length of the chocolate and the particles from the feeding to the just full mixing is T1, T1 is set as the time for controlling the system to control the pump to start running after the feeding, the chocolate mixing tank continues to stir and mix, when the liquid level of the chocolate in the chocolate mixing tank is lower than 5mm, the time is recorded as T2, and the time for controlling the system to control the pump to be switched off and the time for switching on the chocolate quantitative adding device and the particle quantitative adding device again are set, so that the chocolate and the particles are respectively added in a quantitative mode and are sequentially reciprocated.

A pump delivers 3 kg of chocolate and granulate mixture per minute to the coating tank.

The temperature of the chocolate holding tank was set to a chocolate coating temperature of 46 ℃.

The conveying mode of the particle quantitative adding device is vibration adding.

The coating groove overflow recovery device is provided with a return pipe (a discharge port is arranged on the recovery pipe), a staggered first rolling screen mesh belt, a second rolling screen mesh belt and a waste material groove outside the chocolate heat preservation cylinder, wherein the initial end of the running direction of the first rolling screen mesh belt is arranged below the discharge port of the return pipe, the tail end of the running direction of the first rolling screen mesh belt is arranged above the chocolate heat preservation cylinder connected with the chocolate quantitative adding device and is not more than the edge of the chocolate heat preservation cylinder, the initial end of the running direction of the second rolling screen mesh belt is arranged below a mixture of chocolate and particles passing through the first rolling screen mesh belt, the tail end of the running direction of the second rolling screen mesh belt is arranged outside the chocolate cylinder and above the waste material groove, the length of the first rolling screen mesh belt is 400mm, the aperture is 2mm, and the length of the second rolling screen mesh belt is 400mm, the aperture is 1 mm. The first rolling screen mesh belt runs towards the direction of carrying the overflow mixture to fall into the chocolate heat preservation cylinder, the running linear speed is 50mm/s, the second rolling screen mesh belt runs towards the direction of carrying the overflow mixture passing through the first rolling screen mesh belt to fall into the waste trough, and the running linear speed is 50 mm/s. The particles intercepted on the first rolling screen belt fall into the chocolate heat preservation cylinder through the chocolate on the second rolling screen belt, the particles which pass through the first rolling screen belt but are intercepted on the second rolling screen belt fall into the waste tank, and the chocolate in the overflowed mixture falls into the chocolate heat preservation cylinder. The first and second rolling screen belts were provided with partitions spaced 10mm apart from each other. The back of the mesh belt of the first rolling screen and the back of the mesh belt of the second rolling screen are provided with vibrators, and the vibration frequency is 5 times/second. The second rolling screen net belt inclines towards the chocolate heat preservation cylinder, and the inclination angle is 8 degrees.

The chocolate selected was melted white chocolate and the particles were brown cookie particles.

Example 3

A chocolate and particle mixing coating device comprises a chocolate quantitative adding device with a chocolate pump, a particle quantitative adding device with a spiral conveying device, a chocolate mixing tank with a spiral stirring blade and a capacity of 300L, a control system, a liquid level controller arranged at the bottom of the chocolate mixing tank, a pump, a coating tank with a capacity of 70L and an overflow recovery device of the coating tank, wherein the chocolate quantitative adding device, the particle quantitative adding device and the overflow recovery device of the coating tank are all provided with discharge ports, chocolate arranged in the chocolate mixing tank flows to the coating tank through the flow path, the discharge ports of the chocolate quantitative adding device and the particle quantitative adding device are both arranged above the chocolate mixing tank, the adding amount of the chocolate quantitative adding device is 69.2L each time, and the adding amount of the particle quantitative adding device is 7.3L each time, and the total amount of chocolate and particles added was 1.1 times the volume of the coating tank.

The stirring speed in the chocolate mixing tank was 10 rpm. The time length of the chocolate and the particles from the feeding to the just full mixing is T1, T1 is set as the time for controlling the pump to start running after the feeding by the control system, the chocolate mixing tank continues to stir and mix, when the liquid level of the chocolate in the chocolate mixing tank is lower than 10mm, the time is recorded as T2, the time is not set as the time for controlling the pump to be switched off by the control system, and the time for switching on the chocolate quantitative adding device and the particle quantitative adding device again, so that the chocolate and the particles are respectively added in a quantitative mode and are sequentially reciprocated.

A pump delivers 7 kg of chocolate and granulate mixture per minute to the coating tank.

The temperature of the chocolate heat preservation cylinder is set to be 40 ℃.

The conveying mode of the particle quantitative adding device is belt conveying.

The coating groove overflow recovery device is provided with a return pipe (a discharge hole is arranged on the recovery pipe), a staggered first rolling screen mesh belt, a second rolling screen mesh belt and a waste material groove outside the chocolate heat preservation cylinder, the initial end of the running direction of the first rolling screen mesh belt is arranged below the return pipe, the tail end of the running direction of the first rolling screen mesh belt is arranged above the chocolate heat preservation cylinder connected with the chocolate quantitative adding device and is not more than the edge of the chocolate heat preservation cylinder, the initial end of the running direction of the second rolling screen mesh belt is arranged below a mixture of chocolate and particles passing through the first rolling screen mesh belt, the tail end of the running direction of the second rolling screen mesh belt is arranged outside the chocolate cylinder and above the waste material groove, the length of the first rolling screen mesh belt is 600mm, the aperture is 4mm, and the length of the second rolling screen mesh belt is 600mm, the aperture is 0.3 mm. The first rolling screen mesh belt runs towards the direction of carrying the overflow mixture to fall into the chocolate heat preservation cylinder, the running linear speed is 120mm/s, the second rolling screen mesh belt runs towards the direction of carrying the overflow mixture passing through the first rolling screen mesh belt to fall into the waste trough, and the running linear speed is 120 mm/s. The particles intercepted on the first rolling screen belt fall into the chocolate heat preservation cylinder through the chocolate on the second rolling screen belt, the particles which pass through the first rolling screen belt but are intercepted on the second rolling screen belt fall into the waste tank, and the chocolate in the overflowed mixture falls into the chocolate heat preservation cylinder.

The chocolate selected was melted white chocolate and the particles were brown cookie particles.

Example 4

A chocolate and particle mixing and coating device comprises a chocolate quantitative adding device with a chocolate pump, a particle quantitative adding device with a spiral conveying device, a chocolate mixing tank with a spiral stirring blade and a capacity of 300L, a control system, a liquid level controller arranged at the bottom of the chocolate mixing tank, a pump, a coating tank with a capacity of 70L and an overflow recovery device of the coating tank, the chocolate quantitative adding device, the particle quantitative adding device and the coating groove overflow recycling device are all provided with discharge ports, a pump is arranged on a flowing path of chocolate in the chocolate mixing groove to the coating groove, the discharge ports are all arranged above the chocolate mixing groove, the adding amount of the chocolate quantitative adding device is 94.2L each time, the adding amount of the particle quantitative adding device is 10.8L each time, and the adding amount of total chocolate and particles is 1.5 times of the volume of the coating groove.

The stirring speed in the chocolate mixing tank was 7 revolutions/second. The time length of the chocolate and the particles from the feeding to the just full mixing is T1, T1 is set as the time for controlling the system to control the pump to start running after the feeding, the chocolate mixing tank continues to stir and mix, when the liquid level of the chocolate in the chocolate mixing tank is lower than 3mm, the time is recorded as T2, and the time for controlling the system to control the pump to be switched off and the time for switching on the chocolate quantitative adding device and the particle quantitative adding device again are set, so that the chocolate and the particles are respectively added in a quantitative mode and are sequentially reciprocated.

A pump delivers 6 kg of chocolate and granulate mixture per minute to the coating tank.

The temperature of the chocolate heat preservation tank is set to be 45 ℃.

The particle quantitative adding device is provided with a screw conveying device. The particle quantitative adding device quantitatively adds particles by adjusting the rotating speed of a rotating motor in the spiral conveying device.

The chocolate selected was melted white chocolate and the particles were brown cookie particles.

Comparative example

A chocolate and particle mixing and coating device comprises a chocolate mixing tank with a spiral stirring blade and a capacity of 300L, a pump, a coating tank with a capacity of 70L, and a coating tank overflow recovery device, wherein the addition amount of chocolate is 270L, and the addition amount of particles is 30L.

The stirring speed in the chocolate mixing tank was 7 revolutions/second. The time period required for the chocolate and the particles to be mixed just sufficiently from the feeding is T1, then the chocolate mixing tank is opened, the stirring and mixing are continued, and when the liquid level of the chocolate in the chocolate mixing tank is lower than 3mm, the time is recorded as T2.

The temperature of the chocolate holding tank was set to a chocolate coating temperature of 50 ℃.

The chocolate selected was melted white chocolate and the particles were brown cookie particles.

Example 5

White chocolate and brown cookie granules were mixed by adding to the apparatus and method of examples 1 to 4 and the comparative example, white chocolate staining was observed, and the brown cookie granules obtained after mixing of < 2mm were filtered out with a 2mm sieve, weighed, and the weight ratio of the < 2mm granules to the added brown cookie granules was calculated.

The breakage of the brown cookie granules in white chocolate after mixing by the apparatus of examples 1 to 4 and the comparative example is shown in table 1 below:

TABLE 1