Clean screw pump
By designing a three-section detachable structure and screw connection for the clean-type screw pump, the problem of food residue is solved, enabling convenient cleaning and stable connection, and avoiding food spoilage and inconvenient disassembly and assembly.
Patent Information
- Application Number
- CN202520281296.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-21
AI Technical Summary
When using existing screw pumps to transport food, food residue can easily remain in the gap between the screw sleeve and the rotating shaft, making the cleaning and disinfection process cumbersome and difficult to operate, thus affecting food safety.
The design features a three-section detachable structure consisting of a feed cylinder, stator, and fixed base. It is connected by screws for quick disassembly, facilitating high-frequency cleaning, and external bolts ensure stable and convenient connection.
It enables convenient cleaning, avoids food residue and spoilage, improves ease of assembly and disassembly, ensures connection stability, and simplifies the connection structure.
Smart Images
Figure CN223839320U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw pump technology, and in particular to a clean screw pump. Background Technology
[0002] When screw pumps are used to transport food, to ensure the transported food meets safety standards, the pump body and conveying pipeline need to be cleaned and disinfected after the food transport is completed. However, existing screw pumps are prone to food residue getting trapped in the gap between the screw sleeve and the rotating shaft. If the transported food accumulates in this gap for an extended period, it will spoil, affecting the safety of the transported food. Because the food accumulated in the gap is difficult to remove, the pump body needs to be disassembled for cleaning and disinfection, making the entire cleaning and disinfection process cumbersome and difficult to operate. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a clean screw pump, which is not only convenient for high-frequency cleaning and avoids the deterioration of food material residue in the feed cylinder, but also improves the convenience of disassembly and assembly and ensures the stability of the connection while simplifying the connection structure.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a clean screw pump, including: a motor, a reducer connected to the output shaft of the motor, a connecting shaft connected at one end to the output shaft of the reducer, and a stator and a rotor that cooperate with each other. The middle part of the connecting shaft is rotatably mounted on a fixed base through at least two bearings. A feed cylinder is connected to the end of the fixed base opposite to the reducer. A sealing assembly is provided inside the feed cylinder near the fixed base. The other end of the connecting shaft passes through the sealing assembly and is connected to one end of the rotor that passes through the feed chamber through a connecting rod provided in the feed cylinder. The other end of the feed cylinder is connected to the stator, so that the feed chamber in the feed cylinder communicates with the discharge channel formed between the stator and the rotor. At least two first connecting ears are provided on the outside of the stator. At least two second connecting ears corresponding to the first connecting ears are provided on the outside of the fixed base. The first connecting ears and the corresponding second connecting ears are connected by a screw that is axially arranged on the outside of the feed cylinder.
[0005] The following are further improvements to the above technical solution:
[0006] 1. In the above scheme, the first connecting ear is located on the outer side of the stator away from the feed cylinder.
[0007] 2. In the above scheme, a discharge pipe is fitted on the outer side of the stator away from the feed cylinder, and the two first connecting ears are integrally formed on the outer surface of the discharge pipe.
[0008] 3. In the above scheme, a housing part is provided on the outside of the stator body part, and the housing part of the stator is sleeved and connected to the feed cylinder.
[0009] 4. In the above scheme, a spacer ring is provided between the two bearings that are spaced apart along the axial direction of the connecting shaft.
[0010] 5. In the above scheme, a sealing ring is installed on the fixed seat on each side of the bearing.
[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0012] This utility model relates to a clean-type screw pump. The middle of its connecting shaft is rotatably mounted on a fixed base via at least two bearings. A feed cylinder is connected to the fixed base at the end opposite the reducer. A sealing assembly is installed inside the feed cylinder near the fixed base. The other end of the connecting shaft passes through this sealing assembly and is connected to one end of a rotor that enters the feed chamber via a connecting rod located inside the feed cylinder. The other end of the feed cylinder is connected to the stator, allowing the feed chamber inside the feed cylinder to communicate with the discharge channel formed between the stator and rotor. At least two first connecting ears are provided on the outer side of the stator, and at least two second connecting ears corresponding to the first connecting ears are provided on the outer side of the fixed base. The first connecting ears and the corresponding second connecting ears are connected by a screw arranged axially on the outer side of the feed cylinder. This design allows for quick disassembly of the feed cylinder, stator, and rotor, facilitating high-frequency cleaning and preventing food residue deterioration inside the feed cylinder. Furthermore, the external bolt connection improves the ease of assembly and disassembly while ensuring connection stability through a simplified connection structure. Attached Figure Description
[0013] Appendix Figure 1 This is a schematic diagram of the overall structure of the clean screw pump of this utility model;
[0014] Appendix Figure 2 This is a cross-sectional structural diagram of the clean screw pump of this utility model;
[0015] Appendix Figure 3 for Figure 2 Enlarged schematic diagram of a local structure.
[0016] In the above attached figures: 1. Motor; 2. Reducer; 3. Connecting shaft; 41. Stator; 411. Body; 412. Housing; 42. Rotor; 5. Fixed base; 51. Bearing; 52. Spacer ring; 6. Feed cylinder; 61. Feed chamber; 62. Feed inlet; 7. Sealing assembly; 8. Connecting rod; 91. First connecting ear; 92. Second connecting ear; 10. Screw; 11. Discharge pipe; 12. Coupling; 13. Sealing ring; 141. First bracket; 142. Second bracket; 15. Base plate. Detailed Implementation
[0017] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.
[0018] Example 1: A clean-type screw pump includes: a motor 1, a reducer 2 connected to the output shaft of the motor 1, a connecting shaft 3 connected at one end to the output shaft of the reducer 2, and a stator 41 and a rotor 42 that cooperate with each other. The middle part of the connecting shaft 3 is rotatably mounted on a fixed base 5 through at least two bearings 51. A feed cylinder 6 is connected to one end of the fixed base 5 opposite to the reducer 2. A sealing assembly 7 is provided inside the feed cylinder 6 near one end of the fixed base 5. The other end of the connecting shaft 3 passes through the sealing assembly 7 and is connected to a feed cylinder 6. The connecting rod 8 inside is connected to one end of the rotor 42 that passes through the feed chamber 61, and the other end of the feed cylinder 6 is connected to the stator 41, so that the feed chamber 61 inside the feed cylinder 6 is connected to the discharge channel formed between the stator 41 and the rotor 42. At least two first connecting ears 91 are provided on the outside of the stator 41, and at least two second connecting ears 92 corresponding to the first connecting ears 91 are provided on the outside of the fixed seat 5. The first connecting ears 91 and the corresponding second connecting ears 92 are connected by a screw 10 arranged axially on the outside of the feed cylinder 6.
[0019] The overall structure is designed as a three-section detachable structure consisting of the feed cylinder 6, the stator 41, and the fixed base 5, which facilitates high-frequency cleaning of the feed cylinder 6, its internal components, the stator 41, and the rotor 42, and prevents food residue from deteriorating inside the feed cylinder 6.
[0020] The first connecting ear 91 is disposed on the outer side of the stator 41 away from the feed cylinder 6; a discharge pipe 11 is fitted on the outer side of the stator 41 away from the feed cylinder 6, and the two first connecting ears 91 are integrally formed on the outer surface of the discharge pipe 11.
[0021] A housing portion 412 is provided on the outer side of the body portion 411 of the stator 41, and the housing portion 412 of the stator 41 is sleeved and connected to the feed cylinder 6; the sealing component 7 is provided at the connection between the feed cylinder 6 and the fixed base 5.
[0022] The output shaft of the aforementioned reducer 2 is connected to the connecting shaft 3 via a coupling 12; the coupling 12 is connected to both the output shaft of the reducer 2 and the connecting shaft 3 via a keyway.
[0023] Example 2: A clean-type screw pump for conveying large-volume food materials, comprising: a motor 1, a reducer 2 connected to the output shaft of the motor 1, a connecting shaft 3 connected at one end to the output shaft of the reducer 2, and a stator 41 and a rotor 42 that cooperate with each other. The middle part of the connecting shaft 3 is rotatably mounted on a fixed base 5 via at least two bearings 51. A feed cylinder 6 is connected to one end of the fixed base 5 opposite to the reducer 2. A sealing assembly 7 is provided inside the feed cylinder 6 near the fixed base 5. The other end of the connecting shaft 3... The material passes through the sealing assembly 7 and is connected to one end of the rotor 42 that passes through the feeding chamber 61 via a connecting rod 8 disposed in the feeding cylinder 6. The other end of the feeding cylinder 6 is connected to the stator 41, so that the feeding chamber 61 in the feeding cylinder 6 is connected to the discharge channel formed between the stator 41 and the rotor 42. Through the external material conveying mechanism, the flowing food material (such as cream, milk, etc.) is fed into the feeding chamber in the feeding cylinder from the inlet, and then the rotating rotor outputs the material outward from the discharge channel formed between the stator and the rotor.
[0024] The stator 41 has at least two first connecting ears 91 on its outer side, and the fixed base 5 has at least two second connecting ears 92 corresponding to the first connecting ears 91 on its outer side. The first connecting ears 91 and the corresponding second connecting ears 92 are connected by a screw 10 arranged axially on the outer side of the feed cylinder 6. The screw outside the feed cylinder 6 achieves a fixed connection between the three, which can ensure the stability of the connection structure and the convenience of disassembly and assembly, and can also simplify the structure to meet the need to avoid residue accumulation during food transportation.
[0025] A spacer ring 52 is provided between two bearings 51 that are spaced apart along the axial direction of the connecting shaft 3; a sealing ring 13 is installed on the fixed seat 5 on each side of the bearing 51.
[0026] A feed inlet 62 communicating with the feed chamber 61 is provided on the side wall of the feed cylinder 6 near the fixed base 5 and on the side of the sealing assembly 7 opposite to the fixed base 5.
[0027] The two ends of the connecting rod 8, which is set as a universal joint, are eccentrically connected to the connecting shaft 3 and the rotor 42, respectively; the motor 1 and the reducer 2 are mounted on a base plate 15 through a first bracket 141, and the fixed seat 5 is mounted on the base plate 15 near the reducer 2 through a second bracket 142.
[0028] Working principle: Since the transported material is food, the feed cylinder and its internal components need to be cleaned frequently. Based on the above requirements, the overall structure is designed as a three-section detachable structure consisting of the feed cylinder, stator, and fixed base. This facilitates high-frequency cleaning of the feed cylinder, its internal components, and the stator and rotor, preventing food residue and spoilage inside the feed cylinder. The three parts are fixedly connected by long screws on the outside of the feed cylinder, ensuring the stability of the connection structure and the convenience of disassembly and assembly. This also simplifies the structure to meet the need to avoid residue accumulation during food transportation.
[0029] When using the above-mentioned clean screw pump, it can achieve quick disassembly of the feed cylinder, stator and rotor, which facilitates high-frequency cleaning and avoids food material residue and deterioration in the feed cylinder. Furthermore, the external bolt connection further improves the convenience of disassembly and assembly and ensures the stability of the connection while simplifying the connection structure.
[0030] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A clean-type screw pump, comprising: The motor (1), the reducer (2) connected to the output shaft of the motor (1), the connecting shaft (3) connected at one end to the output shaft of the reducer (2), and the stator (41) and rotor (42) that cooperate with each other, characterized in that: the middle part of the connecting shaft (3) is rotatably mounted on a fixed seat (5) by at least two bearings (51), and a feed cylinder (6) is connected to one end of the fixed seat (5) opposite to the reducer (2). A sealing assembly (7) is provided inside the feed cylinder (6) near one end of the fixed seat (5), and the other end of the connecting shaft (3) passes through the sealing assembly (7) and through a connecting rod (41) provided in the feed cylinder (6). 8) One end of the feed cylinder (6) is connected to the rotor (42) that passes through the feed chamber (61), and the other end of the feed cylinder (6) is connected to the stator (41), so that the feed chamber (61) in the feed cylinder (6) is connected to the discharge channel formed between the stator (41) and the rotor (42). At least two first connecting ears (91) are provided on the outside of the stator (41), and at least two second connecting ears (92) corresponding to the first connecting ears (91) are provided on the outside of the fixed seat (5). The first connecting ears (91) and the corresponding second connecting ears (92) are connected by a screw (10) arranged axially on the outside of the feed cylinder (6).
2. The clean-type screw pump according to claim 1, characterized in that: The first connecting ear (91) is located on the outside of the stator (41) away from the feed cylinder (6).
3. The clean-type screw pump according to claim 2, characterized in that: A discharge pipe (11) is fitted on the outer side of the stator (41) away from the feed cylinder (6), and two first connecting ears (91) are integrally formed on the outer surface of the discharge pipe (11).
4. The clean-type screw pump according to claim 1, characterized in that: A housing part (412) is provided on the outside of the body part (411) of the stator (41), and the housing part (412) of the stator (41) is sleeved and connected to the feed cylinder (6).
5. The clean-type screw pump according to claim 1, characterized in that: A spacer ring (52) is provided between the two bearings (51) that are spaced apart along the axial direction of the connecting shaft (3).
6. The clean-type screw pump according to claim 1, characterized in that: A sealing ring (13) is installed on the fixed seat (5) and on each side of the bearing (51).