Multi-element feed additive coating device

Abstract

The utility model relates to the technical field of additive preparation, in particular to a multi-element feed additive coating device, which not only enables an additive and coating liquid to suspend, enhances the coating effect of the additive and improves the coating speed, but also facilitates the cooling of the additive after the coating is completed and ensures the product quality. Comprising a collecting mechanism; the device further comprises a feeding mechanism, a transmission mechanism, a driving mechanism, a liquid conveying mechanism and a suspension mechanism, the feeding mechanism is installed on the collecting mechanism and facilitates additive spraying, the transmission mechanism is installed on the feeding mechanism and drives the feeding mechanism to rotate, and the driving mechanism is installed on the transmission mechanism and drives the transmission mechanism to rotate. The liquid conveying mechanism is installed on the collecting mechanism and sprays wrapping liquid, and the suspension mechanism is installed on the driving mechanism and enables additives to suspend.

Description

Technical Field

[0001] This utility model relates to the technical field of additive preparation, and in particular to a coating device for multi-component feed additives. Background Technology

[0002] Feed additives are important materials in the livestock breeding industry, used to prevent mold and oxidation of basic feed. With the development of the livestock breeding industry, the role of feed additives is no longer limited to mold prevention and anti-oxidation, but is developing towards increasingly complex functional designs.

[0003] Existing multi-component feed additive coating devices, such as the multi-layer coated feed additive preparation system disclosed in utility model patent application number 202022426058.6, mainly include a liquid raw material supply chamber, a powder raw material supply chamber, a raw material mixing and preparation chamber, and a temperature and humidity control device. One end of the raw material mixing and preparation chamber is equipped with a multi-layer coating chamber for the mixed raw materials, and another end is equipped with a coating raw material cooling chamber. A finished product sealing and storage chamber is installed at the lower end of the coating raw material cooling chamber. In use, by using the liquid raw material supply chamber and the powder raw material supply chamber in conjunction, the liquid raw material can be fully mixed with the powder raw material. The material reaction mixing is highly efficient. Through the combined use of liquid raw material early warning modules, an alarm can be triggered when the remaining raw material reaches the warning value, alerting nearby personnel to directly replenish the raw material. Through the raw material mixing and preparation chamber, liquid and powder raw materials can be efficiently and thoroughly mixed before entering the multi-layer coating chamber for multi-layer coating. Through temperature and humidity control devices, the temperature and humidity of the reaction chambers inside the raw material mixing and preparation chamber and the multi-layer coating chamber can be kept at an optimal level. Through the combined use of the coating material cooling chamber and the finished product sealing and storage chamber, the cooled finished product can be sealed and stored.

[0004] However, most existing coating devices use a mixing and stirring method, resulting in a low coating rate. Furthermore, most existing coating devices lack cooling of the additives after coating, which affects the quality of the finished product. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a multi-component feed additive coating device that not only suspends the additive and the coating liquid, enhancing the coating effect of the additive and increasing the coating rate, but also facilitates cooling of the additive after coating to ensure product quality.

[0006] This utility model discloses a multi-component feed additive coating device, including a collection mechanism; it also includes a feeding mechanism, a transmission mechanism, a drive mechanism, a liquid delivery mechanism, and a suspension mechanism. The feeding mechanism is installed on the collection mechanism for convenient spraying of the additive; the transmission mechanism is installed on the feeding mechanism and drives it to rotate; the drive mechanism is installed on the transmission mechanism and drives it to rotate; the liquid delivery mechanism is installed on the collection mechanism and sprays the coating liquid; and the suspension mechanism is installed on the drive mechanism to suspend the additive. When the drive mechanism is activated, it rotates the feeding mechanism via the transmission mechanism, spraying the additive. The liquid delivery mechanism sprays the coating liquid into the feeding mechanism, causing the coating liquid to coat the additive. Simultaneously, the drive mechanism drives the suspension mechanism to blow air into the feeding mechanism, suspending and mixing the additive and coating liquid, enhancing the coating effect and coating rate. After a certain period, the drive mechanism is turned off, and the coated additive naturally settles into the collection mechanism for cooling and collection.

[0007] Preferably, the collection mechanism includes a collection box, a conveying pipe, a valve, a cooling box, a filter screen, and a drawer. The bottom of the collection box is connected to the ground, and the inside of the collection box has a cavity. The bottom of the conveying pipe is connected to the inside of the top of the collection box. The valve is installed on the conveying pipe. The cooling box is installed in the cavity of the collection box and has a cooling chamber inside. The filter screen is installed on the collection box and is connected to the inside of the cooling chamber of the cooling box. The drawer is slidably installed in the cavity of the collection box. The wrapped additive is conveyed to the cooling box through the conveying pipe, and then the valve is closed. Air enters the cooling chamber of the cooling box through the filter screen. The air flows in the cooling chamber of the cooling box, carrying away the heat of the additive and accelerating the cooling of the additive. The cooled additive slides naturally down the upper surface of the cooling box into the drawer for collection.

[0008] Preferably, the feeding mechanism includes a mixing cylinder, a diffuser plate, a spray pipe, three sets of blades, a sleeve, and a feeding pipe. The bottom end of the mixing cylinder is connected to the top end of the conveying pipe. The mixing cylinder has an inner cavity. The diffuser plate is installed inside the inner cavity of the mixing cylinder. The spray pipe is rotatably installed inside the inner cavity of the mixing cylinder and has a discharge port. All three sets of blades are installed on the spray pipe. The sleeve is rotatably installed on the spray pipe. The feeding pipe is installed on the sleeve and is connected to the inside of the spray pipe. The feeding pipe conveys the additive to the spray pipe. The spray pipe sprays the additive into the inner cavity of the mixing cylinder through the discharge port. The transmission mechanism drives the spray pipe to rotate, and the spray pipe drives the three sets of blades to rotate. This not only makes the additive evenly sprayed into the inner cavity of the mixing cylinder, but also mixes the additive and the coating liquid through the three sets of blades, enhancing the coating effect. The diffuser plate facilitates the dispersion of the gas sprayed by the suspension mechanism, so that the additive is suspended in the inner cavity of the mixing cylinder. The sleeve prevents the feeding pipe from rotating with the spray pipe.

[0009] Preferably, the transmission mechanism includes a driven shaft, a first gear, a second gear, and a first pulley. The driven shaft is rotatably mounted on the spray pipe, the first gear is mounted on the driven shaft, the second gear is mounted on the spray pipe and meshes with the first gear for transmission, and the first pulley is mounted on the driven shaft. The drive mechanism drives the first pulley to rotate, the first pulley drives the driven shaft and the first gear to rotate, and the first gear and the second gear mesh for transmission, thereby driving the spray pipe to rotate.

[0010] Preferably, the drive mechanism includes a motor, a dual-output-shaft reducer, a first drive shaft, a second pulley, and a belt. The bottom end of the motor is connected to the top end of the collection box, and the bottom end of the dual-output-shaft reducer is also connected to the top end of the collection box. The first drive shaft is mounted on the dual-output-shaft reducer, and the second pulley is mounted on the first drive shaft. The belt is tensioned between the first pulley and the second pulley. When the motor is started, it drives the first drive shaft to rotate via the dual-output-shaft reducer. The first drive shaft then drives the second pulley to rotate, and the second pulley drives the first pulley to rotate via the belt.

[0011] Preferably, the infusion mechanism includes a delivery pump, a suction pipe, an infusion pipe, a ring pipe, and multiple sets of atomizing nozzles. The bottom end of the delivery pump is connected to the top end of the collection tank. The suction pipe is installed on the delivery pump, the infusion pipe is installed on the delivery pump, the ring pipe is installed on the mixing cylinder and communicates with the inside of the infusion pipe, and the multiple sets of atomizing nozzles are all installed in the inner cavity of the mixing cylinder and communicate with the inside of the ring pipe. When the delivery pump is started, the delivery pump draws out the encapsulating liquid through the suction pipe and simultaneously delivers the encapsulating liquid to the ring pipe through the infusion pipe. The ring pipe distributes the encapsulating liquid to the multiple sets of atomizing nozzles, and the multiple sets of atomizing nozzles atomize the encapsulating liquid and spray it upward, so that the encapsulating liquid encapsulates the suspended additives.

[0012] Preferably, the suspension mechanism includes a second drive shaft, an air pump, an air extraction pipe, an air delivery pipe, and a check valve. The second drive shaft is mounted on a dual-output shaft reducer. The bottom end of the air pump is connected to the top end of the collection box. The air extraction pipe is mounted on the air pump and communicates with the interior of the cooling chamber of the cooling box. The air delivery pipe is mounted on the air pump and communicates with the interior of the delivery pipe. The check valve is mounted on the delivery pipe. The dual-output shaft reducer drives the second drive shaft to rotate, and the second drive shaft drives the air pump to extract air. The air pump extracts air from the cooling chamber of the cooling box through the air extraction pipe, accelerating the air flow in the cooling chamber. The air is then transported upwards through the air delivery pipe and the delivery pipe to the inner cavity of the mixing cylinder, causing the additive and the atomized coating liquid in the inner cavity of the mixing cylinder to be suspended and mixed. After coating is completed, the motor is turned off and the valve is opened, allowing the coated additive to settle. The check valve prevents the additive from entering the air pump.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: when the drive mechanism is started, the drive mechanism causes the feeding mechanism to rotate through the transmission mechanism to spray the additive out, and the liquid delivery mechanism sprays the coating liquid into the feeding mechanism so that the coating liquid coats the additive. At the same time, the drive mechanism drives the suspension mechanism to blow air into the feeding mechanism so that the additive and the coating liquid are suspended and mixed, thereby enhancing the coating effect and coating rate. After a certain period of time, the drive mechanism is turned off, and the coated additive naturally settles into the collection mechanism for cooling and collection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a partially enlarged cross-sectional isometric structural schematic diagram of the collection mechanism of this utility model;

[0016] Figure 3 This is an isometric structural diagram of the collecting mechanism and the driving mechanism of this utility model;

[0017] Figure 4 This is a partially enlarged cross-sectional isometric structural diagram of the feeding mechanism, transmission mechanism and drive mechanism of this utility model;

[0018] Figure 5 This is a partially enlarged cross-sectional isometric structural diagram of the infusion mechanism and suspension mechanism of this utility model.

[0019] The attached diagram is labeled as follows: 01, Collection mechanism; 11, Collection box; 12, Feeding pipe; 13, Valve; 14, Cooling box; 15, Filter screen; 16, Drawer; 02, Feeding mechanism; 21, Mixing cylinder; 22, Aeration plate; 23, Spraying pipe; 24, Blade; 25, Sleeve; 26, Feeding pipe; 03, Transmission mechanism; 31, Driven shaft; 32, First gear; 33, Second gear; 34, First pulley; 04, Drive mechanism; 41, Electric motor; 42, Dual output shaft reducer; 43, First transmission shaft; 44, Second pulley; 45, Belt; 05, Liquid delivery mechanism; 51, Delivery pump; 52, Suction pipe; 53, Liquid delivery pipe; 54, Ring pipe; 55, Atomizing nozzle; 06, Suspension mechanism; 61, Second transmission shaft; 62, Air pump; 63, Suction pipe; 64, Gas delivery pipe; 65, Check valve. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] This utility model discloses a multi-component feed additive coating device, comprising a collection mechanism 01; it also includes a feeding mechanism 02, a transmission mechanism 03, a drive mechanism 04, a liquid delivery mechanism 05, and a suspension mechanism 06. The feeding mechanism 02 is mounted on the collection mechanism 01 for convenient spraying of the additive; the transmission mechanism 03 is mounted on the feeding mechanism 02 and drives the feeding mechanism 02 to rotate; the drive mechanism 04 is mounted on the transmission mechanism 03 and drives the transmission mechanism 03 to rotate; the liquid delivery mechanism 05 is mounted on the collection mechanism 01 and sprays the coating liquid; and the suspension mechanism 06 is mounted on the drive mechanism 04 and suspends the additive. The collection mechanism 01 includes a collection box 11, a delivery pipe 12, a valve 13, a cooling box 14, a filter screen 15, and a drawer 16. The bottom end of the collection box 11 is flush with the ground. The collection box 11 is connected to the top of the collection box 11, which has an internal cavity. The bottom end of the conveying pipe 12 is connected to the top of the collection box 11. A valve 13 is installed on the conveying pipe 12. A cooling box 14 is installed inside the cavity of the collection box 11, and a cooling chamber is provided inside the cooling box 14. A filter screen 15 is installed on the collection box 11 and is connected to the cooling chamber of the cooling box 14. A drawer 16 is slidably installed inside the cavity of the collection box 11. The feeding mechanism 02 includes a mixing cylinder 21, a diffuser plate 22, a spray pipe 23, three sets of blades 24, a sleeve 25, and a feeding pipe 26. The bottom end of the mixing cylinder 21 is connected to the top of the conveying pipe 12, and an internal cavity is provided inside the mixing cylinder 21. The diffuser plate 22 is installed inside the internal cavity of the mixing cylinder 21, and the spray pipe 23 is rotatably installed on the mixing cylinder. The inner cavity of the spray pipe 23 has a discharge port. Three sets of blades 24 are installed on the spray pipe 23. The sleeve 25 is rotatably installed on the spray pipe 23. The feed pipe 26 is installed on the sleeve 25 and communicates with the inside of the spray pipe 23. The transmission mechanism 03 includes a driven shaft 31, a first gear 32, a second gear 33 and a first pulley 34. The driven shaft 31 is rotatably installed on the spray pipe 23. The first gear 32 is installed on the driven shaft 31. The second gear 33 is installed on the spray pipe 23 and meshes with the first gear 32 for transmission. The first pulley 34 is installed on the driven shaft 31. The drive mechanism 04 includes a motor 41, a dual output shaft reducer 42, a first transmission shaft 43, a second pulley 44 and a belt 45. The bottom end of the motor 41 is connected to the reducer. The top of the collection box 11 is connected to the bottom of the dual output shaft reducer 42, and the bottom of the collection box 11 is connected to the top of the collection box 11. The first drive shaft 43 is mounted on the dual output shaft reducer 42, the second pulley 44 is mounted on the first drive shaft 43, and the belt 45 is tensioned between the first pulley 34 and the second pulley 44. The infusion mechanism 05 includes a delivery pump 51, a suction pipe 52, an infusion pipe 53, a ring pipe 54, and multiple sets of atomizing nozzles 55. The bottom of the delivery pump 51 is connected to the top of the collection box 11. The suction pipe 52 is mounted on the delivery pump 51. The infusion pipe 53 is mounted on the delivery pump 51. The ring pipe 54 is mounted on the mixing cylinder 21 and communicates with the inside of the infusion pipe 53. Multiple sets of atomizing nozzles 55 are all mounted in the inner cavity of the mixing cylinder 21 and communicate with the inside of the ring pipe 54.During operation, firstly, the feed pipe 26 delivers the additive to the spray pipe 23. The spray pipe 23 sprays the additive into the inner cavity of the mixing drum 21 through the discharge port. Then, the delivery pump 51 is started, drawing out the encapsulation liquid through the extraction pipe 52 and simultaneously delivering it to the ring pipe 54 through the delivery pipe 53. The ring pipe 54 distributes the encapsulation liquid to multiple atomizing nozzles 55, which atomize the encapsulation liquid and spray it upwards, thus encapsulating the suspended additive. Next, the motor 41 is started, driving the first drive shaft 43 to rotate via the dual-output shaft reducer 42. The first drive shaft 43 drives the second pulley 44 to rotate, which in turn drives the first pulley 34 to rotate via the belt 45. The first pulley 34 drives the driven shaft 31 and the first gear 32 to rotate. The first gear 32 and the second gear 33 mesh to drive the mixture. The spray pipe 23 rotates, driving the three sets of blades 24 to rotate. This not only ensures the additive is evenly sprayed into the inner cavity of the mixing cylinder 21, but also enhances the coating effect by mixing the additive and coating liquid through the three sets of blades 24. The diffuser plate 22 facilitates the dispersion of gas sprayed from the suspension mechanism 06, allowing the additive to remain suspended within the inner cavity of the mixing cylinder 21. The sleeve 25 prevents the feeding pipe 26 from rotating with the spray pipe 23. After coating is complete, the motor 41 is turned off and the valve 13 is opened. The coated additive is then transported to the cooling box 14 through the conveying pipe 12. The valve 13 is then closed, and air enters the cooling chamber of the cooling box 14 through the filter screen 15. The air flows within the cooling chamber, carrying away the heat from the additive and accelerating its cooling. The cooled additive then naturally slides down the upper surface of the cooling box 14 into the drawer 16 for collection.

[0023] Example 2

[0024] like Figures 1 to 5As shown, this utility model discloses a multi-component feed additive coating device, based on Embodiment 1. The suspension mechanism 06 includes a second drive shaft 61, an air pump 62, an air extraction pipe 63, an air delivery pipe 64, and a check valve 65. The second drive shaft 61 is mounted on a dual-output shaft reducer 42. The bottom end of the air pump 62 is connected to the top end of the collection box 11. The air extraction pipe 63 is mounted on the air pump 62 and communicates with the cooling chamber of the cooling box 14. The air delivery pipe 64 is mounted on the air pump 62 and communicates with the inside of the feed pipe 12. The check valve 65 is mounted on the air delivery pipe 64. During operation, firstly, the feed pipe 26 delivers the additive to the spray pipe 23, and the spray pipe 23 sprays the additive through the discharge port. Inside the mixing cylinder 21, the delivery pump 51 is started. The delivery pump 51 draws out the encapsulation liquid through the extraction pipe 52 and simultaneously delivers the encapsulation liquid to the ring pipe 54 through the delivery pipe 53. The ring pipe 54 distributes the encapsulation liquid to multiple sets of atomizing nozzles 55. The multiple sets of atomizing nozzles 55 atomize the encapsulation liquid and spray it upwards, so that the encapsulation liquid encapsulates the suspended additives. The motor 41 is started. The motor 41 drives the first drive shaft 43 to rotate through the dual output shaft reducer 42. The first drive shaft 43 drives the second pulley 44 to rotate. The second pulley 44 drives the first pulley 34 to rotate through the belt 45. The first pulley 34 drives the driven shaft 31 and the first gear 32 to rotate. The first gear 32 and the second... Gear 33 meshes and drives the spray pipe 23 to rotate, which in turn drives the three sets of blades 24 to rotate. This not only ensures that the additive is evenly sprayed into the inner cavity of the mixing cylinder 21, but also, through the three sets of blades 24, mixes the additive and the coating liquid, enhancing the coating effect. The dual-output shaft reducer 42 drives the second drive shaft 61 to rotate, which in turn drives the air pump 62 to draw air. The air pump 62 draws air from the cooling chamber of the cooling box 14 through the air extraction pipe 63, accelerating the airflow within the cooling chamber. The air is then transported upwards through the air delivery pipe 64 and the material delivery pipe 12 into the inner cavity of the mixing cylinder 21, causing the additive and atomized coating liquid within the mixing cylinder 21 to suspend and mix. This process is achieved by setting... The diffuser plate 22 facilitates the dispersion of the gas sprayed by the suspension mechanism 06, allowing the additive to suspend within the inner cavity of the mixing cylinder 21. The sleeve 25 prevents the feeding pipe 26 from rotating with the spray pipe 23. After the coating is completed, the motor 41 is turned off and the valve 13 is opened. The coated additive is transported to the cooling box 14 through the conveying pipe 12. The check valve 65 prevents the additive from entering the air pump 62. Then the valve 13 is closed, and air enters the cooling chamber of the cooling box 14 through the filter screen 15. The air flows in the cooling chamber of the cooling box 14, carrying away the heat of the additive and accelerating its cooling. The cooled additive slides naturally down the upper surface of the cooling box 14 into the drawer 16 for collection.

[0025] The electric motor 41, dual-output shaft reducer 42, delivery pump 51, and air pump 62 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A coating device for a multi-component feed additive, comprising a collection mechanism (01); characterized in that, It also includes a feeding mechanism (02), a transmission mechanism (03), a drive mechanism (04), an infusion mechanism (05), and a suspension mechanism (06). The feeding mechanism (02) is installed on the collection mechanism (01) and facilitates the spraying of additives. The transmission mechanism (03) is installed on the feeding mechanism (02) and drives the feeding mechanism (02) to rotate. The drive mechanism (04) is installed on the transmission mechanism (03) and drives the transmission mechanism (03) to rotate. The infusion mechanism (05) is installed on the collection mechanism (01) and sprays the encapsulating liquid. The suspension mechanism (06) is installed on the drive mechanism (04) and suspends the additives.

2. The multi-component feed additive coating device as described in claim 1, characterized in that, The collection mechanism (01) includes a collection box (11), a conveying pipe (12), a valve (13), a cooling box (14), a filter screen (15), and a drawer (16). The bottom end of the collection box (11) is connected to the ground. The collection box (11) has a cavity inside. The bottom end of the conveying pipe (12) is connected to the top end of the collection box (11). The valve (13) is installed on the conveying pipe (12). The cooling box (14) is installed in the cavity of the collection box (11). The cooling box (14) has a cooling chamber inside. The filter screen (15) is installed on the collection box (11) and is connected to the cooling chamber inside the cooling box (14). The drawer (16) is slidably installed in the cavity of the collection box (11).

3. The multi-component feed additive coating device as described in claim 2, characterized in that, The feeding mechanism (02) includes a mixing cylinder (21), a diffuser plate (22), a spray pipe (23), three sets of blades (24), a sleeve (25), and a feeding pipe (26). The bottom end of the mixing cylinder (21) is connected to the top end of the conveying pipe (12). The mixing cylinder (21) has an inner cavity. The diffuser plate (22) is installed in the inner cavity of the mixing cylinder (21). The spray pipe (23) is rotatably installed in the inner cavity of the mixing cylinder (21) and has a discharge port. The three sets of blades (24) are all installed on the spray pipe (23). The sleeve (25) is rotatably installed on the spray pipe (23). The feeding pipe (26) is installed on the sleeve (25) and is connected to the inside of the spray pipe (23).

4. The multi-component feed additive coating device as described in claim 3, characterized in that, The transmission mechanism (03) includes a driven shaft (31), a first gear (32), a second gear (33), and a first pulley (34). The driven shaft (31) is rotatably mounted on the spray pipe (23). The first gear (32) is mounted on the driven shaft (31). The second gear (33) is mounted on the spray pipe (23) and meshes with the first gear (32) for transmission. The first pulley (34) is mounted on the driven shaft (31).

5. The multi-component feed additive coating device as described in claim 4, characterized in that, The drive mechanism (04) includes a motor (41), a dual-output shaft reducer (42), a first drive shaft (43), a second pulley (44), and a belt (45). The bottom end of the motor (41) is connected to the top end of the collection box (11), the bottom end of the dual-output shaft reducer (42) is connected to the top end of the collection box (11), the first drive shaft (43) is mounted on the dual-output shaft reducer (42), the second pulley (44) is mounted on the first drive shaft (43), and the belt (45) is tensioned between the first pulley (34) and the second pulley (44).

6. The multi-component feed additive coating device as described in claim 3, characterized in that, The infusion mechanism (05) includes a delivery pump (51), a suction pipe (52), an infusion pipe (53), a ring pipe (54), and multiple sets of atomizing nozzles (55). The bottom end of the delivery pump (51) is connected to the top end of the collection box (11). The suction pipe (52) is installed on the delivery pump (51). The infusion pipe (53) is installed on the delivery pump (51). The ring pipe (54) is installed on the mixing cylinder (21) and communicates with the inside of the infusion pipe (53). Multiple sets of atomizing nozzles (55) are installed inside the mixing cylinder (21) and communicate with the inside of the ring pipe (54).

7. The multi-component feed additive coating device as described in claim 5, characterized in that, The suspension mechanism (06) includes a second drive shaft (61), an air pump (62), an air extraction pipe (63), an air delivery pipe (64), and a check valve (65). The second drive shaft (61) is mounted on a dual-output shaft reducer (42). The bottom end of the air pump (62) is connected to the top end of the collection box (11). The air extraction pipe (63) is mounted on the air pump (62) and communicates with the interior of the cooling chamber of the cooling box (14). The air delivery pipe (64) is mounted on the air pump (62) and communicates with the interior of the material delivery pipe (12). The check valve (65) is mounted on the air delivery pipe (64).

Images