Compressed biscuit stirring equipment capable of preventing dissipation of wet feed

Abstract

The utility model discloses a stirring device for compressed biscuits capable of preventing dissipation of wet materials, which comprises a stirring box, a plurality of feeding pipes are distributed on the stirring box, and nozzles are uniformly distributed on the feeding pipes; the spraying head comprises a screw joint part, a spraying part and a double-spiral flow channel which are coaxially arranged, the screw joint part is in screw joint with the feeding pipe, the spraying part is arranged in the stirring box, a nozzle is arranged at the tail end of the spraying part, the double-spiral flow channel penetrates through the screw joint part and an inner cavity of the spraying part, and the two ends of the double-spiral flow channel are communicated with the feeding pipe and the nozzle respectively; the double-spiral flow channel is used for uniformly guiding wet materials into the double-spiral flow channel, and the wet materials passing through the double-spiral flow channel enter the stirring box in a liquid drop shape. According to the utility model, by adopting the specific spray head with the double spiral flow channels and controlling the particle size and the flow speed of liquid drops, wet materials are sprayed into the stirring box in a form of small liquid drops, and the liquid drops quickly move downwards under the action of self weight, so that the problems of raw material loss and environmental pollution caused by the fact that the wet materials escape from a combined gap or an opening of the stirring box are effectively solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of compressed biscuit production equipment, and specifically relates to a mixing device for compressed biscuits that prevents moisture from escaping. Background Technology

[0002] In the preparation of compressed biscuits, to improve the uniformity of mixing powder and wet materials (oil and water), the wet materials are usually incorporated into the powder as droplets through a high-pressure atomizing nozzle during the mixing process. Because the droplets after high-pressure atomization are extremely small and highly fluid, and most mixing equipment is open-type with large openings for easy powder addition and discharge, the atomized wet materials easily escape from the joints and openings, causing raw material loss and environmental pollution. Simultaneously, the atomized wet materials tend to adhere to the inside of the equipment, resulting in both raw material loss and increased cleaning difficulty. Furthermore, the large surface area of ​​the atomized wet materials makes them more susceptible to contact with air, accelerating the oxidation and deterioration of the oil and affecting product quality. Utility Model Content

[0003] The purpose of this invention is to propose a mixing device for compressed biscuits that prevents the leakage of wet materials. This addresses the problems of existing wet material addition methods in the wet mixing process of compressed biscuit powder, which easily cause wet materials to adhere to the inside of the mixing device or leak outwards, resulting in raw material loss, environmental pollution, and difficulty in cleaning the device. It also addresses the problem that the large contact area between wet materials and air makes them prone to oxidation and deterioration, affecting the quality.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a mixing device for compressed biscuits that prevents the leakage of wet materials. The mixing device includes a mixing chamber, which comprises a body and an openable top cover. The top cover is provided with several feeding pipes, which are respectively connected to an oil supply system and a water supply system. Each feeding pipe has evenly distributed nozzles. Each nozzle includes a coaxially arranged threaded connection, a spraying section, and a double-helix flow channel. The threaded connection is threaded to the feeding pipes. The spraying section is located inside the mixing chamber, and a nozzle is provided at the end of the spraying section. The double-helix flow channel extends through the inner cavity of the threaded connection and the spraying section. Both ends of the double-helix flow channel are respectively connected to the feeding pipes and the nozzles. A flow-diverting baffle is provided near one end of the double-helix flow channel near the feeding pipes to evenly guide the wet materials into the double-helix flow channel. The wet materials after passing through the double-helix flow channel enter the mixing chamber in droplet form.

[0006] Based on the above technical solutions, by using a specific double-helix flow channel nozzle to control the droplet size and flow rate, the wet material is sprayed into the mixing tank in the form of small droplets, rather than fine mist droplets. The droplets move downwards by their own weight, thereby preventing the wet material from escaping from gaps or openings and from adhering to the inner wall of the mixing equipment, thus reducing raw material loss and avoiding environmental pollution.

[0007] Preferably, the double helix channel has a guide ring near the nozzle end. The guide ring is funnel-shaped and has guide channels evenly distributed on it. The guide channels are centrifugal curves. This design, through the special structural design of the guide channels, allows the droplets sprayed from the double helix channel to form a larger area and more uniform spray under the action of the guide ring, thereby compensating for the small spray area of ​​the double helix channel and ensuring the full mixing of wet material and powder.

[0008] Preferably, the feeding pipes are arranged in pairs, with each pair including an oil pipe and a water pipe. A flow control valve is provided at the inlet of each oil pipe and water pipe. The flow control valve is used to synchronously control the on / off state of the same pair of oil pipes and water pipes. Each pair of adjacent feeding pipes alternates to supply material. The purpose of this design is to achieve intermittent supply of wet material in different areas by controlling the on / off state of different groups of feeding pipes, so as to ensure that the concentration of droplets in the cavity of the mixing tank (i.e., the amount of droplets that have not combined with the powder) is maintained within a certain range, which does not affect the mixing efficiency of wet material and powder, and further reduces the possibility of wet material escaping.

[0009] Preferably, the flow control valve controls the synchronous opening and closing of all feed pipes to intermittently spray wet material into the mixing tank at different times. This design controls the droplet concentration in the mixing tank to maintain within a suitable range by intermittently supplying wet material at different times, thereby reducing the risk of droplet escaping and oxidation.

[0010] Preferably, a sealing structure is provided at the joint surface between the top cover and the box body. The top cover has a powder feeding port, and a first cover is movably provided at the feeding port. The bottom of the box body has a discharge port, and a second cover is movably provided at the discharge port. This design further reduces the risk of wet material leakage through the overall sealing of the mixing box, ensuring that the mixing process is carried out in a closed environment, and also helps to reduce the risk of wet material oxidation and rancidity.

[0011] More preferably, the housing has a boss at the mating surface, and the top cover has a sealing groove at the mating surface that matches the shape of the boss. The sealing groove has an elastic sealing ring of the same shape inside. After fastening, the elastic sealing ring fits tightly with the boss to achieve a seal. This design effectively prevents wet material leakage by forming a tight fit between the boss and the groove through the elastic sealing ring, and at the same time facilitates disassembly and cleaning.

[0012] More preferably, the feeding port is rectangular, with parallel guide rails protruding from the outer periphery of the two long sides of the feeding port. The first cover is provided with a corresponding groove embedded in the guide rails. Baffles are provided on the outer periphery of the two short sides of the feeding port. A sealing strip is embedded in the front end of the first cover, and a downward extension is provided at the rear end. A sealing strip is also embedded in the front side of the extension. When the first cover slides to close the feeding port, the sealing strips abut against the baffles to seal the feeding port. This design facilitates the convenient opening and closing of the feeding port and effectively ensures the sealing performance at the feeding port.

[0013] More preferably, one end of the second cover is fixedly hinged to the edge of the discharge port, and the other end is movably activated to open the discharge port. The second cover opens outward relative to the discharge port. The second cover is provided with an annular sealing ring. After being fastened, the annular sealing ring seals the joint surface between the discharge port and the second cover. This design can simultaneously meet the requirements of convenient opening and closing of the discharge port and sealing requirements.

[0014] Preferably, the upper cover is provided with an air inlet and an air outlet. The air inlet is connected to a nitrogen source and is used to fill the mixing chamber with nitrogen. The air outlet is used to discharge gas. Both the air inlet and the air outlet are provided with gas valves to control the gas flow. This design fills the mixing chamber with nitrogen, displacing the air inside the mixing chamber and creating an inert environment, which effectively inhibits the oxidation of wet materials.

[0015] Preferably, the outer casing is provided with a baffle half-pipe, and cooling water circulates inside the baffle half-pipe. The temperature of the cooling water is 10-15℃. This design effectively reduces the heat generated during the mixing process through the circulation of cooling water, prevents the wet material from deteriorating due to high temperature, and ensures stable product quality.

[0016] Beneficial effects

[0017] One of the above technical solutions has the following advantages or beneficial effects:

[0018] (1) By using a nozzle with a specific double helix flow channel, the droplet size and flow rate are controlled so that the wet material is sprayed into the mixing tank in the form of small droplets rather than fine droplets. The droplets move downward quickly by their own weight, thereby preventing the wet material from escaping from gaps or openings and adhering to the inner wall of the mixing equipment, thus reducing raw material loss and avoiding environmental pollution.

[0019] (2) By setting a guide ring with a centrifugal curved guide channel at the end of the double spiral channel, the droplets sprayed from the double spiral channel can form a larger area and more uniform spray under the action of the guide ring, thereby making up for the small spray area of ​​the double spiral channel and ensuring the full mixing of wet material and powder.

[0020] (3) By controlling the feeding pipe to feed intermittently according to the settling time and consumption rate of wet material, the concentration of liquid droplets in the cavity of the mixing box is maintained within a certain range, which not only does not affect the mixing efficiency of wet material and powder, but also avoids the escape of wet material due to excessive liquid droplet concentration, thus further achieving the effect of preventing escape.

[0021] (4) The overall sealing design of the mixing tank, the feeding port and the discharge port isolates the internal and external environments during the mixing process, further reducing the possibility of wet material leakage.

[0022] (5) By using nitrogen replacement and baffle half-pipe design, the mixing tank is kept in a low temperature inert environment, which effectively prevents the oxidation and deterioration of wet materials and ensures stable product quality. Attached Figure Description

[0023] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0025] Figure 2 This is a schematic diagram of the nozzle structure according to Embodiment 1 of this utility model;

[0026] Figure 3 This is a schematic diagram of the guide ring structure according to Embodiment 1 of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0028] Figure 5 This is a schematic diagram of the sealing structure between the top cover and the box body in Embodiment 2 of this utility model;

[0029] Figure 6 This is a schematic diagram of the feeding port structure in a sealed state according to Embodiment 2 of this utility model;

[0030] Figure 7 This is a schematic diagram of the discharge port structure of Embodiment 2 of this utility model;

[0031] In the diagram: 1. Mixing tank; 11. Top cover; 12. Tank body; 121. Boss; 13. Feed port; 14. Discharge port; 15. Guide rail; 16. Baffle; 2. Feeding pipe; 21. Flow control valve; 3. Nozzle; 31. Diverting baffle; 32. Screw connection; 33. Double spiral flow channel; 34. Spraying part; 35. Guide ring; 351. Guide flow channel; 36. Nozzle; 4. First cover; 41. Extension; 5. Second cover; 61. Air inlet; 62. Air outlet; 71. Elastic sealing ring; 72. Sealing strip; 73. Annular sealing ring; 8. Baffle half-pipe. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment provides a mixing device for compressed biscuits that prevents moisture from escaping, including a mixing box 1. The mixing box 1 includes an openable top cover 11 and a box body 12. The top cover 11 is provided with a plurality of feeding pipes 2. The feeding pipes 2 are respectively connected to an oil supply system (not shown in the figure) and a water supply system (not shown in the figure). The feeding pipes 2 are evenly distributed with nozzles 3.

[0035] Among them, such as Figure 2 As shown, the nozzle 3 includes a coaxially arranged threaded part 32, a spraying part 34, and a double spiral flow channel 33. The threaded part 32 is threaded to the feeding pipe 2. The spraying part 34 is located inside the mixing tank 1. The end of the spraying part 34 is provided with a nozzle 36. The double spiral flow channel 33 is arranged through the inner cavity of the threaded part 32 and the spraying part 34. The two ends of the double spiral flow channel 33 are respectively connected to the feeding pipe 2 and the nozzle 36. The end of the double spiral flow channel 33 near the feeding pipe 2 (i.e., the inlet end) is provided with a flow divider baffle 31, which is used to uniformly guide the wet material into the double spiral flow channel 33. The wet material after passing through the double spiral flow channel 33 enters the mixing tank 1 in the form of droplets.

[0036] Preferred, such as Figure 3 As shown, the double helix flow channel 33 is provided with a guide ring 35 at one end (i.e., the outlet end) near the nozzle 36. The guide ring 35 is funnel-shaped and is evenly distributed with guide channels 351. The guide channels 351 are centrifugal curves. After the wet material enters the nozzle 3 from the feed pipe 2, it is accelerated by the rotation of the double helix flow channel 33 and then evenly dispersed outward by the guide channels 351 to form umbrella-shaped sprayed droplets.

[0037] Furthermore, in order to maintain the concentration of droplets (i.e. the amount of droplets that are not combined with the powder) in the cavity of the mixing tank 1 within a certain range, so as to avoid the concentration being too high and the risk of wet material escaping due to the turbulence caused by stirring, the feeding pipe 2 and the nozzle 3 intermittently supply material to the mixing tank 1.

[0038] As an optional implementation, the feeding pipes 2 are arranged in pairs, and each pair of feeding pipes 2 includes an oil pipe and a water pipe. The inlet of the oil pipe and the water pipe is equipped with a flow control valve 21. The flow control valve 21 is used to synchronously control the on and off of the same pair of oil pipes and water pipes. Each pair of adjacent feeding pipes 2 alternately supplies material, realizing the intermittent supply of wet material in the mixing tank 1 in different areas. The droplets in the supply area diffuse to the non-supply area and alternately switch the supply area, thereby realizing the control of concentration and distribution uniformity.

[0039] As an optional implementation, a flow control valve 21 is provided at the inlet of the feeding pipe 2. The flow control valve 21 controls all feeding pipes 2 to be opened and closed synchronously to spray wet material into the mixing tank 1 intermittently in different time periods. The amount of wet material sprayed is precisely adjusted to ensure that the concentration of liquid droplets in the mixing tank 1 is stable, effectively reducing the risk of wet material escaping, and avoiding problems such as agglomeration and increased mixing load caused by excessive application, which is conducive to the full mixing of wet material and powder.

[0040] The advantage of this embodiment is that by using a nozzle 3 with a double spiral flow channel 33 and controlling the intermittent feeding of the feeding pipe 2, the wet material is sprayed into the mixing tank 1 in the form of small droplets, rather than fine-particle-size mist droplets, and maintained within a certain concentration range. This allows the droplets to move rapidly downwards by their own weight, thereby preventing the wet material from escaping from gaps or openings and from adhering to the inner wall of the mixing equipment. This reduces raw material loss and avoids environmental pollution, effectively solving the problems of raw material escaping, production environment pollution, increased equipment cleaning difficulty, and easy oxidation of wet material that exist in existing wet material addition methods using high-pressure atomization.

[0041] Example 2

[0042] like Figure 4 As shown, this embodiment provides a mixing device for compressed biscuits that prevents moisture from escaping, which differs from Embodiment 1 in that:

[0043] Based on the structure of Embodiment 1, the mixing tank 1 is designed as a sealed structure to isolate the inside and outside environment of the tank 12, further eliminating the possibility of wet material escaping.

[0044] Specifically, a sealing structure is provided at the joint surface between the upper cover 11 and the box body 12. The upper cover 11 has a powder feeding port 13, and a first cover 4 is movably provided at the feeding port 13. The lower part of the box body 12 has a discharge port 14, and a second cover 5 is movably provided at the discharge port 14.

[0045] Among them, such as Figure 5 As shown, the housing 12 has a boss 121 at the mating surface, and the upper cover 11 has a sealing groove (not shown in the figure) at the mating surface that matches the shape of the boss 121. The sealing groove has an elastic sealing ring 71 of the same shape inside. After fastening, the elastic sealing ring 71 and the boss 121 fit tightly together to achieve a seal.

[0046] like Figure 6As shown, the feeding port 13 is rectangular, and parallel guide rails 15 protrude from the outer periphery of the two long sides of the feeding port 13. The first cover 4 is provided with a corresponding sliding groove (not shown in the figure) embedded in the guide rails 15. The first cover 4 realizes the convenient opening and closing of the feeding port 13 through the cooperation of the guide rails 15 and the sliding groove. Baffles 16 are provided on the outer periphery of the two short sides of the feeding port 13. A sealing strip 72 is embedded in the front end of the first cover 4, and a downward extension 41 is provided at the rear end. A sealing strip 72 is also embedded in the front side of the extension 41. When the first cover... When the cover 4 slides to close the feeding port 13, the sealing strip 72 abuts against the baffle 16 to seal the feeding port 13. That is, the sealing strip 72 at the front end of the first cover 4 is in close contact with the baffle 16 at the front end in the sliding closing direction, and the sealing strip 72 at the rear extension 41 is in close contact with the baffle 16 at the rear end in the sliding closing direction. The sliding of the first cover 4 can be manually controlled. After the feeding port 13 is closed, it is fixed by a limiting structure such as bolts. The sliding and fixing of the first cover 4 can also be driven by a drive device such as an electric push rod.

[0047] like Figure 7 As shown, one end of the second cover 5 is fixedly hinged to the edge of the discharge port 14, and the other end is movable to activate the discharge port 14. The second cover 5 opens outward relative to the discharge port 14 to facilitate the discharge operation. The second cover 5 is provided with an annular sealing ring 73. After being fastened, the annular sealing ring 73 seals the joint surface between the discharge port 14 and the second cover 5.

[0048] Furthermore, to further prevent the wet material (mainly oil) entering the mixing tank 1 from coming into contact with oxygen and becoming rancid, the upper cover 11 is provided with an air inlet 61 and an air outlet 62. The air inlet 61 is connected to a nitrogen source (not shown in the attached figure) and is used to fill the mixing tank 1 with nitrogen to replace the air inside. The air outlet 62 is used to discharge gas. Both the air inlet 61 and the air outlet 62 are provided with gas valves (not shown in the attached figure) to control the gas flow. Preferably, both the air inlet 61 and the air outlet 62 are provided with filters (not shown in the attached figure) to prevent impurities from entering or being discharged, ensuring the purity of nitrogen and the cleanliness of the mixing environment.

[0049] Furthermore, a baffle half-pipe 8 is provided on the outside of the box body 12, and cooling water circulates in the baffle half-pipe 8. The temperature of the cooling water is 10-15℃, so as to absorb the heat generated during the stirring process and prevent the wet material from deteriorating due to excessive temperature during the stirring process.

[0050] The advantages of this embodiment are: the overall sealed design of the mixing tank 1, the feeding port 13 and the discharge port 14 isolates the internal and external environments during the mixing process, further reducing the possibility of wet material leakage; at the same time, the design of nitrogen replacement and the baffle half-pipe 8 maintains a low-temperature inert environment inside the mixing tank 1, further preventing the oxidation and deterioration of wet material, thereby effectively ensuring the stability of product quality.

[0051] In this embodiment, the other components not described, as well as the relative positions and connections between the components, are the same as in Embodiment 1.

[0052] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A mixing device for compressed biscuits that prevents moisture leakage, comprising a mixing chamber, the mixing chamber including a chamber body and an openable top cover, the top cover being provided with a plurality of feeding pipes, the feeding pipes being respectively connected to an oil supply system and a water supply system, and nozzles being evenly distributed on the feeding pipes; characterized in that: The nozzle includes a coaxially arranged threaded part, a spraying part, and a double spiral flow channel. The threaded part is threaded to the feeding pipe. The spraying part is located inside the mixing tank. A nozzle is provided at the end of the spraying part. The double spiral flow channel is arranged through the inner cavity of the threaded part and the spraying part. Both ends of the double spiral flow channel are respectively connected to the feeding pipe and the nozzle. A flow divider is provided at one end of the double spiral flow channel near the feeding pipe to uniformly guide the wet material into the double spiral flow channel. The wet material after passing through the double spiral flow channel enters the mixing tank in the form of droplets.

2. The mixing device for compressed biscuits with moisture-proof properties according to claim 1, characterized in that: The double helix flow channel has a guide ring near the nozzle end. The guide ring is funnel-shaped and has guide channels evenly distributed on it. The guide channels are centrifugal curves.

3. The mixing device for compressed biscuits with moisture-proof properties according to claim 1, characterized in that: The feeding pipes are arranged in pairs, and each pair of feeding pipes includes a fuel pipe and a water pipe. A flow control valve is provided at the inlet of the fuel pipe and the water pipe. The flow control valve is used to synchronously control the on and off of the same pair of fuel pipes and water pipes. Each pair of adjacent feeding pipes alternately supplies materials.

4. The mixing device for compressed biscuits with moisture-proof properties according to claim 3, characterized in that: A control valve is provided at the inlet of the feeding pipe. The flow control valve controls the synchronous opening and closing of all feeding pipes to intermittently spray wet material into the mixing tank at different times.

5. The mixing device for compressed biscuits that prevents moisture leakage according to claim 1, characterized in that: The upper cover and the box body are provided with a sealing structure at the joint surface. The upper cover has a powder feeding port and a first cover is movably provided at the feeding port. The box body has a discharge port and a second cover is movably provided at the discharge port.

6. The mixing device for compressed biscuits with moisture-proof properties according to claim 5, characterized in that: The housing has a boss at the mating surface, and the top cover has a sealing groove at the mating surface that matches the shape of the boss. The sealing groove has an elastic sealing ring of the same shape inside. After fastening, the elastic sealing ring fits tightly with the boss to achieve a seal.

7. A mixing device for compressed biscuits that prevents moisture leakage, as described in claim 5, is characterized in that: The feeding port is rectangular, with parallel guide rails protruding from the outer periphery of its two long sides. The first cover is provided with a groove embedded in the guide rails. Baffles are provided on the outer periphery of both short sides of the feeding port. A sealing strip is embedded in the front end of the first cover, and a downward extension is provided at the rear end. A sealing strip is also embedded in the front side of the extension. When the first cover slides to close the feeding port, the sealing strips abut against the baffles to seal the feeding port.

8. The mixing device for compressed biscuits that prevents moisture leakage according to claim 5, characterized in that: One end of the second cover is fixedly hinged to the edge of the discharge port, and the other end is movable to open the discharge port. The second cover opens outward relative to the discharge port. The second cover is provided with an annular sealing ring. After being fastened, the annular sealing ring seals the joint surface between the discharge port and the second cover.

9. A mixing device for compressed biscuits that prevents moisture leakage according to claim 1, characterized in that: The upper cover is provided with an air inlet and an air outlet. The air inlet is connected to a nitrogen source and is used to fill the agitator with nitrogen. The air outlet is used to discharge gas. Both the air inlet and the air outlet are provided with gas valves to control the gas flow.

10. A mixing device for compressed biscuits that prevents moisture leakage according to claim 1, characterized in that: The casing is equipped with a baffle half-pipe, and cooling water circulates inside the baffle half-pipe. The temperature of the cooling water is 10~15℃.

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