Gluten-free flour and dough vacuum feeding system

Abstract

The application discloses a gluten-free powder and flour vacuum feeding system, which comprises a feeding machine body and a filter material body. The filter material body comprises a volute-shaped outer filter element and an inner filter core, and the inner filter core is located inside the outer filter element. An outer airflow cavity is formed between the outer filter element and the feeding machine body, an inner airflow cavity is formed between the outer filter element and the inner filter core, and the outer airflow cavity and the inner airflow cavity are communicated. The application relates to the technical field of pneumatic vacuum feeding and conveying, and the filter material body reciprocates up and down in a rotating state. The powder is efficiently separated from the filter material body under the action of centrifugal force and continuous vibration, and dynamic desorption is realized. The filter material body adopts a double-layer structure of the volute-shaped outer filter element and the inner filter core for grading filtration. The outer filter element and the feeding machine body form the outer airflow cavity, and the inner filter core and the outer filter element form the inner airflow cavity. When the airflow carries the powder, the filter screen of the outer filter cavity can preliminarily adsorb part of the powder, the amount of the powder entering the inner filter core is reduced, and the continuous negative pressure suction capacity is improved.

Description

Technical Field

[0001] This invention relates to the field of pneumatic vacuum feeding and conveying technology, specifically to a gluten-free powder and surface vacuum feeding system. Background Technology

[0002] In the production of ramen noodles, dough mixing is a crucial step. Typically, a pneumatic conveyor is used to transport the powder to the dough mixer, where it is mixed with water, additives, and other ingredients. In existing technology, the conveyor relies on the negative pressure environment inside the tank, using air pressure difference to draw the powder into the tank. The powder is adsorbed onto the surface of the filter element. After adsorption is complete, positive pressure backflushing blows the material off the filter element. Once a certain amount accumulates, the valve is opened to allow the powder to fall into the dough mixer. However, this method has the following drawbacks: 1. Most of the powder adheres to the filter element surface for a long time, reducing the filter element's permeability and weakening the negative pressure adsorption effect, thus affecting the suction efficiency; 2. To ensure the normal operation of the filter element, suction needs to be stopped and backflushing performed periodically, causing intermittent interruptions in the conveying process and reducing production efficiency; 3. Powder tends to concentrate in localized areas of the filter element, causing blockage of the airflow channels and further reducing adsorption stability. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a gluten-free powder and surface vacuum feeding system, which solves the problem that the reduced core permeability of existing conveyors after long-term operation leads to a weakening of the negative pressure adsorption effect.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a gluten-free powder and flour vacuum feeding system, comprising:

[0005] The feeder body has a feed pipe tangentially installed on its outer wall;

[0006] A filter media body is disposed above the inner cavity of the feeder body; the filter media body includes:

[0007] The device comprises a volute-shaped outer filter element and an inner filter element, wherein the inner filter element is located inside the outer filter element; an outer airflow cavity is formed between the outer filter element and the feeder body, and an inner airflow cavity is formed between the outer filter element and the inner filter element, wherein the outer airflow cavity and the inner airflow cavity are connected.

[0008] Preferably, the internal airflow cavity has an air inlet and an air outlet, and the air outlet is connected to the air inlet;

[0009] The airflow carries the powder into the inner airflow cavity along the outer airflow cavity, and then falls around the inner airflow cavity.

[0010] Preferably, the gap of the outer airflow cavity gradually increases from the air inlet to the air outlet; the gap of the inner airflow cavity gradually decreases from the air inlet to the air outlet.

[0011] Preferably, the outer filter element includes a volute-shaped filter screen frame, and a filter screen is attached to the wall surface of the filter screen frame; the filter screen frame is connected to the inner filter element via a connecting rod.

[0012] Preferably, it also includes an airflow guide connected above the filter media body, which is blown by the airflow from the inner filter element and drives the filter media body to rotate under the negative pressure state of the feeder body.

[0013] Preferably, the airflow guide includes:

[0014] The cover is fixed to the inner cavity of the feeder body, and a gap is formed between the cover and the wall of the feeder body in the circumferential direction; the outer wall of the cover has an air vent in the circumferential direction.

[0015] The chassis is rotatably connected to the bottom of the cover, and when the two are fastened together, a cavity is formed inside.

[0016] Several curved blades are fixed on the chassis and located within the cavity, with a flow divider formed between two adjacent blades;

[0017] The air intake is located at the center of the chassis and communicates with the central cavity of the inner filter element;

[0018] In the case of the feeder body under negative pressure, the airflow drives the blades and chassis to rotate when passing through the diversion chamber.

[0019] Preferably, a connecting mechanism is provided between the airflow guide and the filter media body to enable the filter media body to rotate in a continuous up-and-down reciprocating motion.

[0020] Preferably, the connecting mechanism includes:

[0021] The upper connector is fixed below the chassis;

[0022] The lower connector is fixed above the filter media and can move up and down on the outside of the upper connector;

[0023] An annular wavy groove is formed on the circumferential direction of the outer wall of the lower connector;

[0024] The rollers are mounted on the inner wall of the feeder body and are tactilely connected within the slot.

[0025] Preferably, the outer wall of the upper connecting body is provided with a plurality of guide rails in a vertical circumferential direction, and the inner wall of the lower connecting body is provided with a slider that matches the guide rails in a circumferential direction.

[0026] Preferably, a vacuum pump is provided at the top of the feeder body and a discharge gate valve is provided at the bottom.

[0027] The beneficial effects of the present invention are as follows: By using the gluten-free powder and vacuum feeding system provided by the present invention, the following technical effects are achieved compared with the prior art:

[0028] 1. An airflow guide is set to drive the filter media to rotate in both directions, so that the filter media moves up and down in the rotating state. Under the action of centrifugal force and continuous vibration, the powder is efficiently separated from the filter media, realizing dynamic desorption, avoiding the filter element clogging problem caused by the traditional fixed form, and improving the continuous material storage capacity.

[0029] 2. The filter media adopts a double-layer structure of a volute-shaped outer filter element and an inner filter element for graded filtration. The outer filter element and the feeder body form an external airflow cavity, while the inner filter element and the outer filter element form an internal airflow cavity. When the airflow carries powder, the filter screen of the outer filter cavity can pre-adsorb some of the powder, reducing the amount of powder entering the inner filter element, thereby reducing the surface load of the inner filter element and improving the continuous negative pressure suction capacity.

[0030] 3. The powder flows in a circular path within the inner airflow cavity, making full contact with the inner filter element from top to bottom, avoiding adsorption failure caused by local powder accumulation, ensuring uniform airflow distribution, and maintaining a stable negative pressure adsorption effect.

[0031] 4. By combining dynamic desorption with graded filtration, the frequency of backflushing and compressed air consumption are reduced, energy consumption and equipment wear are decreased, and conveying efficiency is improved. It is suitable for large-scale continuous production of gluten-free powders. Attached Figure Description

[0032] Figure 1 This is an isometric view of the feeder body of the present invention;

[0033] Figure 2 This is a front view of the feeder body of the present invention;

[0034] Figure 3 This is an isometric view of the airflow guide and filter media body of the present invention after assembly;

[0035] Figure 4 This is an isometric view of the filter media body of the present invention;

[0036] Figure 5 This is a diagram showing the state of the filter media body after the filter screen has been removed.

[0037] Figure 6 This is a bottom view of the filter media body of the present invention located inside the feeder body;

[0038] Figure 7 This is a flow path diagram of the airflow and powder in the inner and outer airflow chambers of the present invention;

[0039] Figure 8 This is an exploded view of the airflow guide structure of the present invention;

[0040] Figure 9 This is a top view of the blades of the present invention mounted on the chassis;

[0041] Figure 10 For the present invention Figure 2 Enlarged diagram of point A in the middle.

[0042] Explanation of the reference numerals in the figure:

[0043] 1. Feeder body; 2. Vacuum pump; 3. Feed pipe; 4. Airflow guide; 41. Cover; 42. Air outlet; 43. Chassis; 44. Blade; 45. Diverter chamber; 46. Air inlet; 5. Filter media body; 51. Filter screen frame; 52. Inner filter element; 53. Filter screen; 54. Connecting rod; 55. Inner airflow chamber; 56. Air inlet; 57. Exhaust port; 6. Guide rail; 7. Slider; 8. Upper connecting body; 9. Slotted; 10. Lower connecting body; 11. Roller; 12. Outer airflow chamber. Detailed Implementation

[0044] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. The present invention discloses a gluten-free powder and surface vacuum feeding system, comprising a feeder body and an airflow guide and a filter body stacked above the inner cavity of the feeder body. The airflow guide is used to drive the filter body to rotate under negative pressure by the airflow flowing from the inner filter element. The filter body includes a volute-shaped outer filter element and an inner filter element, with the inner filter element located inside the outer filter element; an outer airflow cavity is formed between the outer filter element and the feeder body, and an inner airflow cavity is formed between the outer filter element and the inner filter element, with the outer and inner airflow cavities connected. Dynamic desorption is achieved by driving the filter body to rotate in both directions using the airflow guide. The filter screen of the outer filter cavity can pre-adsorb some powder, reducing the amount of powder entering the inner filter element. The powder flows in a coiled path within the inner airflow cavity, ensuring uniform airflow distribution and maintaining a stable negative pressure adsorption effect.

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Various changes can be made to the implementation schemes as long as the effects of the present invention can be achieved.

[0046] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0047] like Figures 1 to 10 As shown, this application proposes a vacuum feeding system in its embodiments. Figure 1As shown, the device includes a feeder body 1 and an inlet pipe 3 tangentially disposed on the outer wall of the feeder body 1, as well as a vacuum pump 2 disposed at the top of the feeder body 1 and a discharge gate valve disposed at the bottom. The discharge gate valve is an electric butterfly valve. In addition, the feeder body 1 differs from the prior art in that the tank portion extends downward to form an extension section 101, the purpose of which is to accommodate more powder material in a single storage.

[0048] In this embodiment, as Figure 2 As shown, an airflow guide 4 and a filter body 5 are stacked on top of the inner cavity of the feeder body 1, with the airflow guide 4 connected above the filter body 5. The feed pipe 3 is located in the middle of the feeder body 1, and its connection point with the feeder body 1 must not exceed the bottom surface of the filter body 5, ensuring that the airflow and powder can be directly sprayed onto the filter body 5. Under the action of negative pressure, the airflow and powder float up along the filter body 5 and contact the filter body 5, and fall down under the action of gravity to the extension section 101 at the bottom of the feeder body 1 for storage.

[0049] In this embodiment, after the negative pressure airflow and powder are filtered by the filter body 5, the powder remains on the surface of the filter body 5 or falls to the bottom of the feeder body 1. The airflow enters the vacuum pump 2 through the airflow guide 4, and the airflow guide 4 is blown by the airflow from the inner filter element 52 under the negative pressure state of the feeder body 1, causing it to rotate and drive the filter body 5 to rotate. This causes the powder adhering to the filter body 5 to detach from the filter body 5 under vacuum adsorption and fall to the bottom of the feeder body 1. The filter body 5 is in a moving state inside the feeder body 1, reducing the amount of powder adhering to the surface of the filter body 5 and giving the filter body 5 a longer filtration time. Combined with the extension section 101 of the tank of the feeder body 1, the purpose of conveying more powder in a single suction is achieved.

[0050] Specifically, refer to Figures 4 to 6 In this embodiment, the filter media 5 includes a volute-shaped outer filter element and an inner filter element 52, with the inner filter element 52 located inside the outer filter element. In this embodiment, the bottom of the inner filter element 52 is closed to prevent powder from being drawn into the vacuum pump 2 under negative pressure; while the bottom of the outer filter element is open to allow powder falling from the wall of the inner filter element 52 into the storage space at the bottom of the feeder body 1.

[0051] An external airflow cavity 12 is formed between the external filter element and the feeder body 1, and an internal airflow cavity 55 is formed between the external filter element and the internal filter element 52. The external airflow cavity 12 and the internal airflow cavity 55 are connected.

[0052] Furthermore, the inner airflow cavity 55 has an air inlet 56 and an air outlet 57. The air outlet 57 is connected to the air inlet 56, so that the inner airflow cavity 55 is annular in cross-section. The airflow and powder continuously flow in annular circles within the inner airflow cavity 55, allowing the powder to fully contact the inner filter element 52 circumferentially from top to bottom, thereby increasing the contact effect with the inner filter element 52.

[0053] In addition, such as Figure 7 As shown, in this embodiment, the gap of the outer airflow cavity 12 gradually increases from the air inlet 56 to the exhaust port 57; the gap of the inner airflow cavity 55 gradually decreases from the air inlet 56 to the exhaust port 57, so that the airflow is in a state of movement from rapid to slow and from slow to rapid.

[0054] As described above, the airflow carrying the powder enters the inner airflow cavity 55 along the outer airflow cavity 12, and then circulates and falls within the inner airflow cavity 55, forming a flow path for the airflow and powder. In this path, the airflow and powder first enter through the feed pipe 3 and flow within the outer airflow cavity 12. Part of the airflow passes through the outer filter element and enters the inner filter element 52, while part of the airflow carrying the powder flows within the outer airflow cavity 12. As the gap in the outer airflow cavity 12 gradually widens, the airflow dynamics are reduced, allowing the powder to disperse and fall before adhering to the outer filter element, reducing the amount of powder adhering to the outer filter element. Then, the airflow and powder enter the inner airflow cavity 55 through the air inlet 56. Part of the airflow enters the inner filter element 52, while part of the airflow carrying the powder flows within the inner airflow cavity 55. As the gap in the inner airflow cavity 55 gradually narrows, the residual airflow dynamics are increased, allowing the powder to adhere evenly to the circumferential wall of the inner filter element 52, preventing localized loss of adsorption effect due to concentrated adhesion points and preventing blockage of the inner airflow cavity 55.

[0055] Preferably, in this embodiment, the outer filter element includes a volute-shaped filter screen frame 51, and a filter screen 53 is attached to the wall surface of the filter screen frame 51; the filter screen frame 51 is connected to the inner filter element 52 via a connecting rod 54. Both ends of the filter screen frame 51 are fixed to the connecting rod 54, and the gap between the two ends of the filter screen frame 51 forms the air inlet 56 of the inner airflow cavity 55, and the end of the filter screen frame 51 located on the inner side forms the exhaust port 57 of the inner airflow cavity 55 between it and the inner filter element 52.

[0056] For example, when the airflow carrying powder flows within the outer airflow cavity 12, it comes into contact with the filter screen 53, causing some of the powder to be adsorbed onto the filter screen 53. This reduces the amount of powder entering the inner airflow cavity 55, thereby reducing the amount of powder adhering to the surface of the inner filter element 52. Since the air inlet 56 and the exhaust outlet 57 are connected, the airflow carrying powder flows continuously along a circumferential path within the inner airflow cavity 55, causing some of the powder to fall along this path. This continuous circumferential flow allows the powder to adhere evenly to the circumferential wall of the inner filter element 52, achieving the purpose of preventing localized loss of air intake adsorption effect and blockage of the inner airflow cavity 55 caused by concentrated adhesion points.

[0057] Reference Figure 8 and Figure 9In some examples, the airflow guide 4 includes a cover 41, a base 43, and several curved blades 44. The outer wall of the cover 41 has an air outlet 42 circumferentially opened. The cover 41 is fixed to the inner cavity of the feeder body 1, and a gap is formed circumferentially between the cover 41 and the wall of the feeder body 1 to allow airflow to flow to the vacuum pump 2 during adsorption and to spray airflow to the inner filter element 52 in backflushing mode.

[0058] Furthermore, in this embodiment, the chassis 43 is rotatably connected to the bottom of the cover 41 via a rotating ring, and the two are fastened together to form an internal cavity. An air inlet 46 is provided at the center of the chassis 43, and the air inlet 46 communicates with the central cavity of the inner filter element 52. This air inlet is used to allow airflow from the feeder body 1 to pass through the inner filter element 52 into the cavity under negative pressure, and then enter the vacuum pump 2 through the air outlet 42; or to blow air into the inner filter element 52 in the opposite direction. Of course, the "rotating ring connection" structure here is not exhaustive, and any form that can achieve "rotation" can also be used.

[0059] Furthermore, several curved blades 44 are fixed to the chassis 43 and located within the cavity. The top of each curved blade 44 does not contact the cover 41, leaving a 5mm gap to ensure that the chassis 43 and the blades 44 can rotate on the cover 41. At the same time, a flow divider cavity 45 is formed between two adjacent blades 44. When the airflow passes through the flow divider cavity 45 under negative pressure or blowing conditions in the feeder body 1, it drives the blades 44 and the chassis 43 to rotate.

[0060] Furthermore, such as Figure 8 and Figure 9 As shown, since the blade 44 is curved, the flow divider 45 appears to be twisted in the top view projection. When the airflow passes through the air inlet 46 and the air outlet 42, it can drive the blade 44 to rotate, thereby achieving negative pressure suction of the airflow and causing the chassis 43 to rotate in the forward and reverse directions when the airflow impacts the inner filter element 52, which in turn drives the filter material body 5 to rotate in the forward and reverse directions.

[0061] In addition, such as Figure 10 As shown, a connecting mechanism is provided between the airflow guide 4 and the filter media 5, which is used to make the filter media 5 rotate continuously up and down, so that the powder leaves the filter media 5 under the action of centrifugal force of rotation, and the powder also leaves the filter media 5 through the continuous vibration force generated by the up and down movement of the filter media 5.

[0062] For example, the connecting mechanism includes an upper connecting body 8 fixed below the chassis 43 and a lower connecting body 10 fixed above the filter media body 5. The lower connecting body 10 is fixed to the filter screen frame 51. The outer wall of the upper connecting body 8 is provided with a plurality of guide rails 6 arranged vertically in the circumferential direction, and the inner wall of the lower connecting body 10 is provided with sliders 7 that match the guide rails 6 in the circumferential direction, so that the lower connecting body 10 can move up and down outside the upper connecting body 8.

[0063] In addition, in this embodiment, the outer wall of the lower connecting body 10 is provided with an annular wave-shaped groove 9, and correspondingly, a roller 11 is provided on the inner wall of the feeder body 1, and the roller 11 is tumbling connected in the groove 9.

[0064] In the specific implementation process, when the chassis 43 rotates and drives the filter media 5 to rotate in both directions, the lower connecting body 10 rotates accordingly. Since the roller 11 acts in the slot 9, when the lower connecting body 10 rotates, the roller 11 moves continuously up and down in the annular wave-shaped slot 9. At this time, the lower connecting body 10 slides up and down on the guide rail 6 on the wall of the upper connecting body 8 through the slider 7, so that the lower connecting body 10 and the filter media 5 rotate while moving continuously up and down. At this time, the filter media 5 rotates while also moving continuously up and down, so that the powder can be separated from the filter media 5, reducing the amount of powder adhering to the surface of the filter media 5, and giving the filter media 5 a longer filtration time.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gluten-free powder and flour vacuum feeding system, characterized in that, include: The feeder body has a feed pipe tangentially installed on its outer wall; as well as A filter media body is disposed above the inner cavity of the feeder body; the filter media body includes: A volute-shaped outer filter element and an inner filter element, wherein the inner filter element is located inside the outer filter element; an outer airflow cavity is formed between the outer filter element and the feeder body, and an inner airflow cavity is formed between the outer filter element and the inner filter element, wherein the outer airflow cavity and the inner airflow cavity are connected. The inner airflow cavity has an air inlet and an air outlet, with the air outlet connected to the air inlet; wherein, the airflow carries the powder into the inner airflow cavity along the outer airflow cavity, and falls around the inner airflow cavity; The gap of the outer airflow cavity gradually increases from the air inlet to the air outlet; the gap of the inner airflow cavity gradually decreases from the air inlet to the air outlet. The external filter element includes a volute-shaped filter screen frame, on which a filter screen is attached; the filter screen frame is connected to the inner filter element via a connecting rod; both ends of the filter screen frame are fixed to the connecting rod, and the gap between the two ends of the filter screen frame forms the air inlet of the inner airflow cavity, while the end of the filter screen frame located on the inner side forms the exhaust port of the inner airflow cavity between it and the inner filter element.

2. The gluten-free powder and flour vacuum feeding system according to claim 1, characterized in that: Also includes: An airflow guide is connected above the filter media body. Under negative pressure of the feeder body, the airflow from the inner filter element drives the filter media body to rotate.

3. The gluten-free powder and flour vacuum feeding system according to claim 2, characterized in that: The airflow deflector includes: The cover is fixed to the inner cavity of the feeder body, and a gap is formed between the cover and the wall of the feeder body in the circumferential direction; the outer wall of the cover has an air vent in the circumferential direction. The chassis is rotatably connected to the bottom of the cover, and when the two are fastened together, a cavity is formed inside. Several curved blades are fixed on the chassis and located within the cavity, with a flow divider formed between two adjacent blades; The air intake is located at the center of the chassis and communicates with the central cavity of the inner filter element; In the case of the feeder body under negative pressure, the airflow drives the blades and chassis to rotate when passing through the diversion chamber.

4. The gluten-free powder and flour vacuum feeding system according to claim 2, characterized in that: A connecting mechanism is provided between the airflow guide and the filter media body to enable the filter media body to rotate in a continuous up-and-down reciprocating motion.

5. A gluten-free powder and flour vacuum feeding system according to claim 4, characterized in that: The connecting mechanism includes: The upper connector is fixed below the chassis; The lower connector is fixed above the filter media and can move up and down on the outside of the upper connector; An annular wavy groove is formed on the circumferential direction of the outer wall of the lower connector; The rollers are mounted on the inner wall of the feeder body and are tactilely connected within the slot.

6. The gluten-free powder and flour vacuum feeding system according to claim 5, characterized in that: The outer wall of the upper connector is provided with several guide rails arranged vertically in the circumferential direction, and the inner wall of the lower connector is provided with sliders that match the guide rails in the circumferential direction.

7. The gluten-free powder and flour vacuum feeding system according to claim 1, characterized in that: The top of the feeder body is equipped with a vacuum pump, and the bottom is equipped with a discharge gate valve.

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