Magnetic transmission centrifugal pump for food sanitation level

Abstract

The utility model provides a food hygiene level magnetic transmission centrifugal pump, which relates to the centrifugal pump field, and comprises a centrifugal pump body, a bearing body and a pump head support, the upper end of the centrifugal pump body is hermetically connected with the bearing body, the upper end of the bearing body is hermetically connected with the pump head support, the inner side of the pump head support is provided with an outer magnetic coupling, and the outer magnetic coupling is connected with the pump head support. An inner magnetic rotor is arranged on the inner side of the outer magnetic coupler, a pump shaft is connected into the inner magnetic rotor, a liquid guide pipe is welded to the right side end of the pump head support, the pipe opening end of the liquid guide pipe is connected with a high-pressure water pipe, an annular spraying cavity is formed in the lower end of the pump head support, and spraying holes are formed in the upper end face of the annular spraying cavity. The upper end of the liquid guide pipe is connected with an air supply pipe through a branch pipe, and the other end of the air supply pipe is connected with a small fan. The problems that when an existing centrifugal pump stops working, food is prone to remaining in a pump cavity of a magnetic drive pump, the food remaining in the pump for a long time is prone to deterioration, and the food conveying safety of the centrifugal pump is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically to a food-grade magnetic drive centrifugal pump. Background Technology

[0002] Food-grade stainless steel magnetic drive pumps refer to pumps whose flow-through components come into contact with food and must meet food safety requirements. This is because food processing involves the use of many acids and alkalis, and stainless steel contains chromium. Substandard stainless steel can leach chromium at various valence levels, which is toxic. Furthermore, the content of various alloying impurities such as lead and cadmium must be limited. However, when existing centrifugal pumps stop working, food residue can easily remain inside the pump chamber of the magnetic drive pump. Prolonged food residue inside the pump can easily spoil, affecting the safety of food transported by the centrifugal pump. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a food-grade magnetic drive centrifugal pump is provided to solve the problem that food easily remains in the pump chamber of the magnetic drive pump when the existing centrifugal pump stops working, and that food left in the pump for a long time is prone to spoilage, affecting the safety of the food transported by the centrifugal pump.

[0004] To achieve the above objectives, a food-grade magnetically driven centrifugal pump is provided, comprising: a centrifugal pump body, a bearing body, and a pump head bracket. The bearing body is sealed to the upper end of the centrifugal pump body, and the pump head bracket is sealed to the upper end of the bearing body.

[0005] An external magnetic coupling is installed inside the pump head bracket, and an internal magnetic rotor is provided inside the external magnetic coupling. A pump shaft is connected inside the internal magnetic rotor. A liquid guide pipe is welded to the right end of the pump head bracket, and a high-pressure water pipe is connected to the end of the liquid guide pipe. An annular spray chamber is opened inside the lower end of the pump head bracket, and spray holes are opened on the upper surface of the annular spray chamber. An air supply pipe is connected to the upper end of the liquid guide pipe through a branch pipe, and a small fan is connected to the other end of the air supply pipe.

[0006] Furthermore, the centrifugal pump body has a pump body outlet on the left side and a pump body inlet on the lower end, with a food pipe connected to the lower end of the pump body inlet.

[0007] Furthermore, a pump head is mounted on the upper end of the pump head bracket, a motor is provided at the front end of the pump head, and a support frame is screwed to the rear side of the pump head bracket.

[0008] Furthermore, the bearing housing is connected to a pump shaft via a rolling bearing, and an open impeller is provided inside the centrifugal pump housing; the open impeller is connected to the pump shaft.

[0009] Furthermore, an isolation sleeve is installed between the external magnetic coupling and the internal magnetic rotor; and the spray holes are located inside the isolation sleeve.

[0010] Furthermore, a branch pipe is welded to the upper surface of the liquid guide tube, and a control valve is installed on the surface of the branch pipe.

[0011] Furthermore, a support frame is fixedly connected to the lower end of the small fan, and a liquid guide pipe is connected to the right end of the annular spray chamber.

[0012] The beneficial effects of this utility model are as follows: The food-grade magnetic drive centrifugal pump utilizes a liquid guide pipe connected to a high-pressure water pipe on the side of the pump head bracket. High-pressure water is sprayed out through multiple spray holes in the annular spray chamber inside the pump head bracket. The sprayed clean water flows downward through the pump inlet pipe through the inner hole of the shaft, the outer gap of the shaft, the bearing gap, and various parts of the pump body, flushing out residual food in the pump chamber. This achieves a cleanable magnetic drive centrifugal pump, facilitating regular cleaning of residual food in the pump chamber, preventing food residue from spoiling and generating bacteria, ensuring that the operation of the magnetic drive centrifugal pump meets food hygiene standards, and improving the hygiene of the magnetic drive centrifugal pump. A small fan supplies air to the pump after rinsing, allowing the air inside the pump to circulate quickly and accelerate the drying speed inside the pump, avoiding the impact of residual moisture or cleaning agents on the normal operation of the pump. Attached Figure Description

[0013] Figure 1 This is a front view structural schematic diagram of a food-grade magnetically driven centrifugal pump according to an embodiment of the present invention.

[0014] Figure 2 This is a front view cross-sectional structural diagram of a food-grade magnetically driven centrifugal pump according to an embodiment of the present invention.

[0015] Figure 3 This is a front view cross-sectional structural diagram of the pump head bracket according to an embodiment of the present utility model.

[0016] In the diagram: 1. Centrifugal pump body; 11. Pump body outlet; 12. Pump body inlet; 13. Support frame; 14. Open impeller; 2. Bearing body; 21. Pump shaft; 22. Rolling bearing; 3. Pump head bracket; 31. External magnetic coupling; 32. Isolation sleeve; 33. Internal magnetic rotor; 34. Branch pipe; 35. Liquid guide pipe; 36. Control valve; 37. Annular spray chamber; 38. Spray hole; 4. Pump head; 41. Motor; 5. Food processing pipe; 6. High-pressure water pipe; 7. Small fan; 71. Air supply pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1 to 3 As shown, this utility model provides a food-grade magnetically driven centrifugal pump, comprising: a centrifugal pump body 1, a bearing body 2, and a pump head bracket 3. The upper end of the centrifugal pump body 1 is sealed with the bearing body 2, and the upper end of the bearing body 2 is sealed with the pump head bracket 3.

[0019] An external magnetic coupling 31 is installed inside the pump head bracket 3. An internal magnetic rotor 33 is installed inside the external magnetic coupling 31. A pump shaft 21 is connected inside the internal magnetic rotor 33. A liquid guide pipe 35 is welded to the right end of the pump head bracket 3. A high-pressure water pipe 6 is connected to the end of the liquid guide pipe 35. An annular spray chamber 37 is opened inside the lower end of the pump head bracket 3. A spray hole 38 is opened on the upper surface of the annular spray chamber 37. An air supply pipe 71 is connected to the upper end of the liquid guide pipe 35 through a branch pipe 34. A small fan 7 is connected to the other end of the air supply pipe 71.

[0020] After the centrifugal pump 1 stops working, the food separation pipe 5 is connected, and clean water is delivered to the liquid guide pipe 35 through the high-pressure water pipe 6. The clean water is then sprayed out through the spray holes 38 of the annular spray chamber 37. The sprayed clean water flows downward out of the pump chamber through the inner hole of the shaft, the outer clearance of the shaft, the bearing clearance, and various parts of the pump body, flushing out any remaining food in the pump chamber. After rinsing, the valve on the surface of the air supply pipe 71 is opened, and the small fan 7 is started to deliver airflow to the rinsing area inside the pump body, accelerating the circulation of gas inside the pump. This facilitates rapid drying inside the magnetic drive centrifugal pump after rinsing, allowing it to transport food again.

[0021] In this embodiment, a pump outlet 11 is provided on the left side of the centrifugal pump body 1; and a pump inlet 12 is provided on the lower end face, with a food pipe 5 connected to the lower end of the pump inlet 12.

[0022] As a preferred embodiment, the pump body outlet 11 and pump body inlet 12 facilitate the transportation of food in the food pipe 5 through the pump chamber to the pump body outlet 11 for discharge, and the pump body inlet 12 can discharge the water flowing down from the magnetic drive centrifugal pump.

[0023] In this embodiment, a pump head 4 is mounted on the upper end of the pump head bracket 3, a motor 41 is provided at the front end of the pump head 4, and a support frame 13 is screwed to the rear side of the pump head bracket 3. The pump shaft 21 is connected to the inner side of the bearing body 2 through a rolling bearing 22, and an open impeller 14 is provided in the cavity of the centrifugal pump body 1; and the open impeller 14 is connected to the pump shaft 21.

[0024] In a preferred embodiment, the motor 41 drives the external magnetic coupling 31 to rotate through the transmission mechanism, so that the magnetic field generated by the rotor of the external magnetic coupling 31 acts on the internal magnetic rotor 33 through the gap and the isolation sleeve 32, causing the internal magnetic rotor 33 to rotate synchronously, thereby driving the pump shaft 21 and the open impeller 14 to continue rotating and conveying the food in the pump chamber.

[0025] In this embodiment, an isolation sleeve 32 is installed between the external magnetic coupling 31 and the internal magnetic rotor 33; and the spray holes 38 are located inside the isolation sleeve 32. A branch pipe 34 is welded to the upper surface of the liquid guide pipe 35, and a control valve 36 is installed on the surface of the branch pipe 34. A support frame 13 is fixedly connected to the lower end of the small fan 7, and the right end of the annular spray chamber 37 is connected to the liquid guide pipe 35.

[0026] In a preferred embodiment, the isolation sleeve 32 serves to isolate and protect the magnetically driven centrifugal pump. The liquid guide pipe 35 sprays high-pressure water through the spray holes 38, allowing the water to flow downwards through the shaft inner hole, shaft outer clearance, bearing clearance, and various parts of the pump body, exiting the pump chamber through the pump inlet pipe. This flushes out any residual food in the pump chamber, preventing food spoilage and bacterial growth, and ensuring the magnetically driven centrifugal pump operates in accordance with food hygiene standards. The small fan 7 delivers air to accelerate the drying of the pump interior after flushing.

[0027] This invention relates to a food-grade magnetic drive centrifugal pump that effectively solves the problem of food residue in the pump being prone to spoilage and affecting the safety of the pumped food. It facilitates regular cleaning of residual food in the pump chamber, prevents food residue from spoiling and generating bacteria, ensures that the operation of the magnetic drive centrifugal pump meets food hygiene standards, and improves the hygiene of the magnetic drive centrifugal pump. It is applicable to food-grade magnetic drive centrifugal pumps.

[0028] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A food-grade magnetically driven centrifugal pump, comprising: The centrifugal pump body (1), bearing body (2), and pump head bracket (3) are provided, wherein the upper end of the centrifugal pump body (1) is sealed with the bearing body (2), and the upper end of the bearing body (2) is sealed with the pump head bracket (3). The centrifugal pump body (1) is characterized by the following features: An external magnetic coupling (31) is installed inside the pump head bracket (3). An internal magnetic rotor (33) is provided inside the external magnetic coupling (31). A pump shaft (21) is connected inside the internal magnetic rotor (33). A liquid guide pipe (35) is welded to the right end of the pump head bracket (3). A high-pressure water pipe (6) is connected to the end of the liquid guide pipe (35). An annular spray chamber (37) is opened inside the lower end of the pump head bracket (3). A spray hole (38) is opened on the upper surface of the annular spray chamber (37). An air supply pipe (71) is connected to the upper end of the liquid guide pipe (35) through a branch pipe (34). A small fan (7) is connected to the other end of the air supply pipe (71).

2. The food-grade magnetically driven centrifugal pump according to claim 1, characterized in that, The centrifugal pump body (1) has a pump body outlet (11) on the left side and a pump body inlet (12) on the lower end, and a food pipe (5) is connected to the lower end of the pump body inlet (12).

3. A food-grade magnetically driven centrifugal pump according to claim 1, characterized in that, The pump head bracket (3) is equipped with a pump head (4) at its upper end, and a motor (41) is provided at the front end of the pump head (4). A support frame (13) is screwed to the rear side of the pump head bracket (3).

4. A food-grade magnetically driven centrifugal pump according to claim 1, characterized in that, The bearing body (2) is connected to the pump shaft (21) via a rolling bearing (22) on its inner side. An open impeller (14) is provided inside the centrifugal pump body (1). The open impeller (14) is connected to the pump shaft (21).

5. A food-grade magnetically driven centrifugal pump according to claim 1, characterized in that, An isolation sleeve (32) is installed between the external magnetic coupling (31) and the internal magnetic rotor (33); and the spray holes (38) are located inside the isolation sleeve (32).

6. A food-grade magnetically driven centrifugal pump according to claim 1, characterized in that, A branch pipe (34) is welded to the upper surface of the liquid guide pipe (35), and a control valve (36) is installed on the surface of the branch pipe (34).

7. A food-grade magnetically driven centrifugal pump according to claim 1, characterized in that, The lower end of the small fan (7) is fixedly connected to a support frame (13), and the right end of the annular spray chamber (37) is connected to a liquid guide pipe (35).

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