Large-particle food conveying device

Abstract

The utility model relates to the technical field of food production and processing equipment, in particular to a large-particle food conveying device which comprises a motor and a pump body which are connected with each other, the pump body comprises a pump shell, an impeller and an impeller shaft, the impeller and the impeller shaft are arranged in the pump shell, the pump shell is connected with an outer shell of the motor, and the impeller is arranged on the outer wall of the impeller shaft. One end of the impeller shaft is connected with a rotating shaft of the motor, the pump shell is provided with a material inlet and a material outlet, the material inlet is formed in the axial direction of the motor shaft, and the material outlet is formed in the radial direction of the motor shaft; the impeller shaft is of a cone structure, and the tip faces the material inlet; the impeller is of a spiral structure, is spirally screwed on the outer wall of the cone structure of the impeller shaft in the direction facing the material inlet, and does not make contact with the inner wall, where the material inlet is located, of the pump shell. The spiral material conveying channel is constructed to convey materials, the guidance quality and smoothness of the material conveying process can be effectively improved, the material conveying quality is improved, and the adaptability of material categories is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of food production and processing equipment, in particular to a conveying device for large-particle foods. Background Art

[0002] In the food production and processing industry, for the transportation of liquid materials or materials with water bodies, a conveying pipeline with a certain sanitary level is often used in combination with various control valves to build a conveying pipeline, and the conveying power is generally provided by a conveying pump driven by a motor. In addition to relatively strict sanitary and safety conditions, the conveying pumps suitable for the food processing industry also need to consider factors such as easy disassembly and maintenance performance, easy cleaning performance, and no dead ends in the fluid passage of the pump cavity, so as to ensure that the production process has high sustainable operation performance and stable performance while meeting the sanitary and safety standards. In addition, because it is designed specifically for food production and processing, compatibility needs to be considered according to the characteristics of the materials, because different materials have different conveying requirements, and the same material may also show different characteristics at different production stages, such as viscosity, temperature, shape (dispersed or in a mass, etc.).

[0003] In the actual production and processing process, some materials with large-particle characteristics often need to ensure that the structure and shape of the materials are not damaged while maintaining a high flow rate during transportation, otherwise it will affect the subsequent production and the quality of the final product. Such large-particle materials include fruit additives commonly found in canned fruits, jelly additives (such as konjac) in various beverages, intermediate materials (distillers' grains) in wine production, and even various aquatic products are also required to remain fresh during transportation. Common conveying pumps cannot meet these usage requirements. They not only easily break the materials, but also easily cause blockage problems at the inlets and outlets of the pump cavity, and even form blind spots in the pump cavity (here refers to some areas with relatively small flow rates in the pump cavity, which is more common in pump structures with a large gap between the inner wall of the pump cavity and the blades), resulting in the accumulation of some highly viscous materials, which not only affects the conveying efficiency, but also affects subsequent cleaning. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a conveying device for large-particle foods to solve the above technical problems.

[0005] The technical problems solved by the utility model can be realized by adopting the following technical solutions:

[0006] A conveying device for large-particle foods, including a motor and a pump body, the motor is connected to the pump body, wherein,

[0007] The pump body includes a pump housing, an impeller and an impeller shaft, the impeller and the impeller shaft are arranged in the pump housing, and the pump housing is connected to the outer shell of the motor.

[0008] The impeller is arranged on the outer wall of the impeller shaft, and one end of the impeller shaft is connected to the rotating shaft of the motor.

[0009] The pump housing has a material inlet and a material outlet for the material in transportation to enter and exit. The material inlet is arranged along the axial direction of the motor shaft, and the material outlet is arranged along the radial direction of the motor shaft.

[0010] The impeller shaft is in a conical structure, and its tip faces the material inlet.

[0011] The impeller is in a spiral structure, and it spirally advances in the direction facing the material inlet on the outer wall of the conical structure of the impeller shaft without contacting the inner wall of the pump housing where the material inlet is located.

[0012] Preferably, the pump housing includes a first housing and a second housing, which are connected to each other and the inner cavities of the two are interconnected.

[0013] The material inlet is arranged on the first housing and communicates with the inner cavity of the first housing.

[0014] The material outlet is arranged on the second housing and communicates with the inner cavity of the second housing.

[0015] The inner wall of the first housing is arranged along the edge of the spiral structure of the impeller. The second housing surrounds the impeller shaft, and an output channel is formed after spacing from the edge of the impeller.

[0016] By arranging a spirally advancing impeller in cooperation with an impeller shaft in a conical structure, the utility model constructs a spiral fluid channel in the pump cavity, which not only has strong pumping capacity but also reduces the blind area in the pump cavity.

[0017] Preferably, the first housing is in a conical structure, the top opening of the conical structure is formed as the material inlet, and the bottom opening is connected to the second housing after opening.

[0018] Preferably, the connection position between the second housing and the first housing is circular, and the distance from the point on the edge of the impeller closest to the connection position to the connection position does not exceed 1 cm.

[0019] Preferably, the height of the impeller shaft is less than the height of the impeller.

[0020] Preferably, the projection of the end of the impeller in the plane where the opening of the material inlet is located along the axis center line direction of the motor shaft is within the opening range.

[0021] Preferably, the vertical distance from the end of the impeller to the plane where the opening of the material inlet is located does not exceed 1 cm.

[0022] Preferably, an interface member is provided at the positions of both the material inlet and the material outlet, and the interface member has an external thread.

[0023] Preferably, an interface member is provided at the positions of the material inlet and the material outlet, and an annular recessed structure is provided on the outer wall of the interface member so that when a hose is sleeved, a force-applying structure is provided for the clamp.

[0024] Beneficial effects: Due to the above technical solutions, the spiral material transport channel is constructed by the cooperation of the spiral impeller and the pump cavity structure corresponding to the impeller in the present utility model, which can effectively improve the directivity and smoothness of the material transportation process. The specific advantages are as follows:

[0025] 1) Improve the quality of material transportation: The materials being transported can obtain an obvious guiding effect and the corresponding guiding pumping force. There are fewer blind spots in the pump cavity, and it is not easy to have the problem of blocking the pump cavity, and the phenomenon that the materials are damaged due to mutual impact is reduced.

[0026] 2) Enhance the adaptability to material categories: In addition to being able to transport common fluid materials, it can also transport materials with characteristics such as high viscosity and high particle density, and even can provide the transportation of living materials (generally referring to living materials mixed with water bodies here, such as living aquatic products, etc.). And when adjusted to an appropriate transportation speed, both the transportation efficiency and the transportation quality can be taken into account. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the present utility model;

[0028] Figure 2 is Figure 1 a schematic diagram of the structure with the pump housing removed;

[0029] Figure 3 is a schematic cross-sectional structural diagram of the present utility model;

[0030] Figure 4 is a schematic structural diagram of the impeller shaft of the present utility model;

[0031] Figure 5 is a schematic structural diagram of the impeller and the impeller shaft after assembly of the present utility model;

[0032] Figure 6 is Figure 5 a schematic diagram of the positional layout between the structure and the interface on the material inlet side. DETAILED DESCRIPTION OF THE INVENTION

[0033] In order to make the technical means, creative features, achieved objectives and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific illustrations. It should be noted that the terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present utility model are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the term "comprising" or "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a product or device comprising a series of components or units does not necessarily have to be limited to those components or units clearly listed, but may include other components or component units that are not clearly listed or are inherent to these products or devices.

[0034] Referring to Figure 1 , Figure 2 , Figure 3 , the large-particle food conveying device includes a motor 100 and a pump body, and the motor 100 is connected to the pump body.

[0035] The pump body includes a pump housing 201, an impeller 202 and an impeller shaft 203. The impeller 202 and the impeller shaft 203 are arranged inside the pump housing 201, and the pump housing 201 is connected to the outer shell of the motor 100.

[0036] The impeller 202 is arranged on the outer wall of the impeller shaft 203, and one end of the impeller shaft 203 (through a coupling) is connected to the motor shaft 101.

[0037] The pump housing 201 has a material inlet 9001 and a material outlet 9002 for the material in transportation to enter and exit. The material inlet 9001 is arranged along the axial direction of the motor shaft 101, and the material outlet 9002 is arranged along the radial direction of the motor shaft 101;

[0038] As Figure 3 , Figure 4 shown, the impeller shaft 203 has a conical structure, and its tip faces the material inlet 9001;

[0039] The impeller 202 has a spiral structure, and it spirally advances in the direction facing the material inlet 9001 on the outer wall of the conical structure of the impeller shaft 203 and does not contact the inner wall of the pump housing where the material inlet 9001 is located (here it means that when the impeller is spirally arranged along the outer wall of the impeller shaft towards the material inlet side, the edge of the impeller is spaced apart from the inner wall of the pump chamber and does not contact it).

[0040] It should be noted that the material inlet 9001 is arranged along the axial direction of the motor shaft 101, which means that the axis center line of the impeller shaft 203 and the axis center line of the electric rotating shaft 101 are the same straight line, and the material inlet 9001 is located on this straight line (here it can be regarded that the center of the material inlet is located on this straight line).

[0041] The material outlet 9002 is arranged along the radial direction of the motor shaft 101, which means that the opening of the material outlet 9002 is arranged along the axis center line perpendicular to the motor shaft 101.

[0042] According to the above example, the opening directions of the material inlet 9001 and the material outlet 9002 are set to be perpendicular to each other.

[0043] In addition, the motor shaft in the present utility model includes its shaft body and a coupling connecting the shaft ends, as Figure 3 described, the motor shaft 101 is connected to the impeller shaft 203 through the coupling 102. As Figure 4 shown, a connecting seat 2031 facilitating connection with the coupling is provided on the impeller shaft 203, and a keyway 9004 is provided therein.

[0044] After the pump casing is arranged in the following structure in the present utility model, it has a better pumping effect: in some embodiments, as Figure 3 shown, the pump casing includes a first casing 2011 and a second casing 2012, the two are connected, and the inner cavities of the two are interconnected;

[0045] The material inlet 9001 is arranged on the first casing 2011 and communicates with the inner cavity of the first casing 2011,

[0046] The material outlet 9002 is arranged on the second casing 2012 and communicates with the inner cavity of the second casing 2012,

[0047] The inner wall of the first casing 2011 is arranged along the edge of the spiral structure of the impeller 202, the second casing 2012 is arranged around the impeller shaft 203, and an output channel is formed after being spaced from the edge of the impeller 202.

[0048] In the present utility model, by arranging an impeller with a spiral precession and an impeller shaft with a cone structure, a spiral fluid channel is constructed in the pump cavity. After the spiral structure fluid channel is communicated with the output channel, the material from the material inlet 9001 is pumped out of the pump cavity from the material outlet 9002, which not only has strong pumping capacity, but also reduces the blind area in the pump cavity. When the impeller works, a spiral fluid channel is formed in the pump cavity. After the material enters the pump cavity from the material inlet 9001, after being guided by the spiral fluid channel, the problems of mutual collision and collision with the inner wall of the pump cavity are reduced, the pumping performance is relatively improved, and the phenomenon of material damage is reduced.

[0049] The first housing of the present utility model can be arranged in the following structure to cooperate with the spiral structure of the impeller, reducing the influence of the gap between the edge of the impeller and the inner wall of the pump housing on the pumping process: In some embodiments, such as Figure 1 , Figure 3 shown, the first housing 2011 is in a conical structure. The top opening of the conical structure is formed as a material inlet 9001, and the bottom opening is connected to the second housing 2012 after opening.

[0050] In some preferred embodiments, such as Figure 1 , Figure 2 shown, the connection position 2013 between the second housing 2012 and the first housing 2011 is circular. The distance from the point on the edge of the impeller 202 closest to the connection position 2013 to the connection position does not exceed 1 cm.

[0051] This example can be understood as follows: The impeller is spirally wound around the outer wall of the conical structure of the impeller shaft and extends along the axial center line direction of the motor shaft towards the material inlet direction. Therefore, there are countless points on the edge of the impeller. Among these countless points, the point closest to the connection position 2013 between the first housing and the second housing, the interval distance between this point and the connection position 2013 is less than 1 cm. This structural setting takes into account the structural assembly gap and the gap change caused by the vibration of the impeller shaft during operation. When this distance is set too large, when pumping at a low speed, some small-particle materials are likely to directly flow into the output channel at the second housing from this gap, resulting in the material being prone to collide with the inner wall of the pump chamber. Also, when it directly enters the output channel, it is likely to collide with the material transported under the guiding action of the normal spiral pumping fluid channel, resulting in the material losing part of the pumping power effect and being prone to material damage.

[0052] When the first housing structure of the present utility model is set to a conical structure, the volume of the inner cavity of the first housing is relatively reduced, and the inlet flow rate is relatively decreased. This results in an increase in flow velocity when the impeller speed remains unchanged, and the material is prone to being separated from the guiding action and causing the materials to be squeezed and collided with each other, increasing the probability of the material hitting the inner wall of the first housing cavity. To solve this problem, the impeller and the impeller shaft can be arranged in the following structure to increase the chamber space in the first housing: In some embodiments, such as Figure 2 , Figure 5 shown, the height of the impeller shaft 203 is less than the height of the impeller 202.

[0053] Refer to Figure 6The structure is shown. The distance from the top to the bottom of the impeller 202 is defined as the height L1 of the impeller, and the distance from the top to the bottom of the impeller shaft 203 is defined as the height L2 of the impeller shaft. Then L2 < L1. In the illustrated structure, since the height of the impeller shaft 203 is set to be less than the height of the impeller 202, the top end of the impeller 202 extends beyond the top end of the impeller shaft 203.

[0054] That is to say, during the process of the impeller spirally coiling and extending on the outer wall of the impeller shaft, its outermost end extends beyond the top end of the impeller shaft. As Figure 3 shown, in some of the embodiments, although the top end of the impeller shaft 203 is located within the first housing 2011, there is still a certain distance from the opening where the material inlet 9001 is located, but the foremost end of the impeller 202 is in close contact with the position where the material inlet 9001 is located.

[0055] In order to ensure that the material flows into the pump chamber from the material inlet 9001 along the spiral surface of the impeller as much as possible, the present utility model can be arranged in the following structure: In some embodiments, as Figure 3 、 Figure 6 shown, the projection of the end of the impeller 202 in the plane along the axial center line direction of the motor shaft 101 falls within the opening range of the opening of the material inlet 9001.

[0056] It should be noted that for the end of the impeller 202 on the side facing the material inlet 9001, this end has a perpendicular projection in the plane where the opening surface of the material inlet 9001 is located, and the projection direction is parallel to the axial center line direction of the motor shaft 101. Setting the perpendicular projection of the impeller end to fall within the opening range of the material inlet 9001 can ensure that after the material enters the material inlet 9001, it can be smoothly guided to the side of the material outlet 9002 under the influence of the guiding action of the spiral fluid channel. Otherwise, when the material enters the material inlet 9001, it may impact the inner wall of the first housing 2011 (on the side of the material inlet 9001).

[0057] In order to further improve the feeding quality on the material inlet side of the present utility model, enable the material to be smoothly guided by the spiral fluid channel formed by the impeller and the first housing during feeding, and avoid the material directly entering the inner cavity of the second housing from the gap, it can be arranged in the following structure: In some of the embodiments, as Figure 6 shown,

[0058] the perpendicular distance between the end of the impeller 202 and the plane where the opening of the material inlet 9001 is located does not exceed 1 cm.

[0059] Figure 6 In the shown structure, the plane where the opening of the material inlet 9001 is located can be regarded as the plane where the opening on the side of the interface member 301 facing the impeller 202 is located. This perpendicular distance is defined as the spacing L3 between the impeller end and the end face of the material inlet, then L3 ≤ 1 cm.

[0060] The intention of setting the present utility model as described in the above example is to make the end of the impeller as close as possible to the material inlet, so that the material enters the guiding range of the spiral fluid channel when feeding. After setting according to this structure, when the material enters the front pump chamber (here refers to the first housing) from the material inlet, most of the material is immediately guided and pumped backward along the spiral fluid channel, reducing the amount of material directly entering the rear pump chamber (here refers to the second housing) from the gap (this gap is the gap between the impeller edge and the inner wall of the first housing). When most of the material is guided by the spiral fluid channel, a larger feeding trend can be formed, and this trend is also easy to pull the remaining material that is not directly affected by the guiding action, so that it is pulled back into the spiral fluid channel and merged into the material flow in the spiral fluid channel and pumped backward.

[0061] After setting according to the above structure, the problem that some materials directly enter the inner cavity of the second housing after escaping from the guiding range can be effectively suppressed. Relatively, the guiding action on the material flow is also enhanced, thereby improving the smoothness of material transportation and avoiding the problem that the escaped material and the material pumped under the guiding action collide with each other in the inner cavity of the second housing and cause some materials to be "scattered".

[0062] In order to facilitate the connection of the material inlet and the material outlet to external pipelines, the present utility model can be set according to the following structure: An interface part is provided at the position where the material inlet and the material outlet are located. Referring to Figure 1 、 Figure 2 , an interface part 301 is provided on the side of the material inlet 9001, and an interface part 302 is provided on the side of the material outlet 9002.

[0063] Based on the above example, in some embodiments, the interface part has an external thread for connecting a pipeline with an internal thread structure through a threaded connection method;

[0064] In other embodiments, an annular recessed structure is provided on the outer wall of the interface part so that when sleeving a hose, the clamp has a force-applying structure. Figure 6 In the shown structure, the interface part 301 is set in this structure. After an annular recessed structure 9003 is provided on the outer wall of the interface part 301, it is formed into a clamping groove that can be clamped by a clamp. After sleeving the hose, the hose can be firmly connected by clamping the clamp on the clamping groove.

[0065] In summary, while maintaining a strong pumping capacity, the present utility model can ensure that there are fewer blind spots in the pump chamber that are not affected by the guiding action of the spiral fluid channel, so that the material is within the guiding range from the inlet side to the outlet side, reducing the problem of mutual collision between materials or the material hitting the inner wall of the pump housing. Thus, not only the transportation efficiency is ensured, but also the transportation quality is improved, and the material is prevented from being damaged during the transportation process.

[0066] It should be noted that thanks to the constructed spiral fluid channel, when transporting live aquatic products (such as live fish, live shrimp, etc.), after reducing the rotational speed of the impeller to an appropriate speed, it can ensure the survival of live aquatic products during transportation. The guiding effect of the spiral fluid channel avoids the problems of live aquatic products squeezing, colliding with each other and contacting the inner wall of the pump chamber. This feature makes up for the deficiencies in the corresponding needs of the food processing industry.

[0067] In addition, during wine production, when transporting intermediate materials such as distiller's grains or rice slurry or other materials with relatively high viscosity and particulate characteristics, if the existing conveying pumps in the prior art are used for transportation, it is very easy to cause blockage in the pump chamber. However, when using the present utility model for transportation, the occurrence of blockage problems can be greatly reduced. When the pump body of the present utility model works, the rotation of the impeller cooperates with the conical part structure of the pump shell to construct a fluid channel with good guiding effect and small blind area, which enhances the pumping power while ensuring the smooth flow of materials during transportation and reduces the problems of blockage and adhesion to the pump chamber.

[0068] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A large particle food conveying device, comprising a motor and a pump body, wherein the motor is connected to the pump body, and characterized in that: The pump body includes a pump casing, an impeller and an impeller shaft, the impeller and the impeller shaft are arranged in the pump casing, the pump casing is connected to the casing of the motor, the impeller is arranged on the outer wall of the impeller shaft, one end of the impeller shaft is connected to the rotating shaft of the motor, the pump casing has a material inlet and a material outlet, the material inlet is arranged along the axial direction of the motor shaft, and the material outlet is arranged along the radial direction of the motor shaft; the impeller shaft has a conical structure, and its tip faces the material inlet; the impeller has a spiral structure, and it spirally rotates on the outer wall of the conical structure of the impeller shaft in the direction of the material inlet, and does not contact the inner wall of the pump casing where the material inlet is located.

2. The large-particle food conveying device according to claim 1, characterized in that: The pump housing comprises a first housing and a second housing, the two are connected, and the inner cavities of the two are communicated with each other; The material inlet is arranged on the first shell and communicates with the inner cavity of the first shell. The material outlet is arranged on the second shell and communicates with the inner cavity of the second shell. The inner wall of the first shell is arranged along the edge of the spiral structure of the impeller, and the second shell is arranged around the impeller shaft and is spaced from the edge of the impeller to form an output channel.

3. The large-particle food conveying device according to claim 2, characterized in that: The first shell is in a cone structure, the top opening of the cone structure is formed as the material inlet, and the bottom opening is connected to the second shell.

4. The large-particle food conveying device according to claim 3, characterized in that: The connection position between the second shell and the first shell is circular, and the distance between the point on the edge of the impeller closest to the connection position and the connection position does not exceed 1 cm.

5. The large-particle food conveying device according to claim 3, characterized in that: The height of the impeller shaft is smaller than the height of the impeller.

6. The large-particle food conveying device according to claim 5, characterized in that: The projection of the end of the impeller along the axis center line of the motor shaft within the plane where the opening of the material inlet is located is within the opening range.

7. The large-particle food conveying device according to claim 6, characterized in that: The vertical distance between the end of the impeller and the plane where the opening of the material inlet is located does not exceed 1 cm.

8. The large-particle food conveying device according to any one of claims 1 to 7, characterized in that: An interface piece is provided at the location of the material inlet and the material outlet, and the interface piece has an external thread.

9. The large-particle food conveying device according to any one of claims 1 to 7, characterized in that: An interface piece is provided at the location of the material inlet and the material outlet, and an annular recessed structure is provided on the outer wall of the interface piece.

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