Rotor pump head capable of automatically scraping and washing curdlan without rotating clearance

Abstract

The utility model belongs to the technical field of rotor pumps, and discloses a rotor pump head capable of automatically scraping and washing curdlan without rotating clearance, which comprises a pump head shell, a material conveying cavity is arranged in the pump head shell, and two fan-shaped rotors with opposite rotating directions are rotatably mounted in the material conveying cavity. First scraping blocks are detachably installed on the outer surfaces of fan heads of the fan-shaped rotors, the ends of the first scraping blocks abut against the side cavity walls of the material conveying cavity, second scraping blocks are detachably installed in the middles of fan faces on the two sides of the fan-shaped rotors, and the ends of the second scraping blocks abut against the two cavity walls in the thickness direction of the material conveying cavity; the rotor pump is simple in overall structure, can automatically scrape the inner wall of the pump head during rotation of the rotor in the process of conveying curdlan by adopting the rotor pump, eliminates a rotating gap between the rotor and the inner wall of the pump head, improves the conveying efficiency, and improves the using effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotor pumps, in particular to a rotor pump head for Curdlan with automatic scraping and cleaning without rotational gap. Background Art

[0002] Curdlan, a key microbial exopolysaccharide, has attracted significant attention in the chemical, food, and pharmaceutical industries for its unique gelling properties and broad application prospects. Rotor pumps play a crucial role in the production and delivery of curdlan. Rotor pumps consist of a stationary pump body and a rotating rotor. They lack suction and discharge valves, instead applying energy directly to the liquid in the form of static pressure from the side of the rotor in contact with the liquid. As the rotor begins to rotate, the space between it and the pump body gradually increases, creating a low-pressure area that draws liquid into the pump chamber. As the rotor continues to rotate, the liquid in the pump chamber is squeezed, gradually increasing the pressure. During this process, the pump chamber is disconnected from the inlet to prevent backflow. When the rotor reaches a certain point, the pressure in the pump chamber reaches its maximum, at which point the pump chamber connects to the outlet, allowing the liquid to be discharged.

[0003] Traditional rotary pumps often have a rotational gap between the rotor and the inner wall of the pump head. Due to the powdery nature of curdlan, curdlan will adhere to the inner wall of the pump head during the process of conveying curdlan using a rotary pump, making it difficult to clean and requiring complete disassembly for cleaning. At the same time, when curdlan is stuck in the rotational gap between the rotor and the inner wall of the pump head, it affects the working performance of the rotary pump and reduces its service life. Utility Model Content

[0004] The main technical problem to be solved by the utility model is to provide a rotor pump head for curdlan rubber with a simple overall structure, which can automatically scrape the inner wall of the pump head during the rotation of the rotor in the process of conveying curdlan rubber using a rotor pump, thereby eliminating the rotational gap between the rotor and the inner wall of the pump head, improving the conveying efficiency, and is wear-resistant and has improved use effect.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A rotor pump head for curdlan with zero rotational gap and automatic scraping and cleaning comprises a pump head housing, a material delivery cavity being provided in the pump head housing, two fan-shaped rotors with opposite rotation directions being rotatably mounted in the material delivery cavity, a first scraping block being detachably mounted on the outer surface of the fan head of the fan-shaped rotor, the ends of the first scraping block being in abutment with the side cavity walls of the material delivery cavity, a second scraping block being detachably mounted at the middle position of the fan surfaces on both sides of the fan-shaped rotor, the ends of the second scraping block being in abutment with the two cavity walls in the thickness direction of the material delivery cavity.

[0007] The following is a further optimization of the above technical solution by the present invention:

[0008] One side surface of the pump head housing is connected with a liquid inlet pipe, and the other side surface of the pump head housing is connected with a liquid outlet pipe at a position corresponding to the liquid inlet pipe.

[0009] Further optimization: a first rotating shaft is rotatably installed at the upper middle position of the feeding cavity, and a second rotating shaft is rotatably installed at the lower middle position of the feeding cavity, and the rotation directions of the first rotating shaft and the second rotating shaft are opposite.

[0010] Further optimization: a first T-shaped mounting groove is provided on the outer surface of the fan head of the fan-shaped rotor, and the size of the first T-shaped mounting groove matches the outer size of the first T-shaped block.

[0011] Further optimization: a second T-shaped mounting groove is provided at the middle position on both side surfaces in the thickness direction of the sector rotor, and the size of the second T-shaped mounting groove matches the outer dimensions of the second scraper block.

[0012] Further optimization: the first scraper block includes a first T-shaped block inserted in a first T-shaped mounting groove, and two symmetrically arranged first slopes are provided at the end of the first T-shaped block. A first rubber layer is adhered to the first slope, and the first rubber layer is connected to the side cavity wall of the feed cavity.

[0013] Further optimization: the second scraper block includes a second T-shaped block inserted in the second T-shaped mounting groove, two symmetrically arranged second slopes are provided at the end of the second T-shaped block, and a second rubber coating layer is adhered to the second slopes.

[0014] Further optimization: the first rubber layer and the second rubber layer are made of wear-resistant rubber material, and the thickness of the first rubber layer and the second rubber layer is set to 1-3 mm.

[0015] The utility model adopts the above technical solution, has an ingenious conception and a reasonable structure, and can quickly and stably convey production materials during the production process of curdlan, avoiding the phenomenon of production materials being stuck between the fan-shaped rotor and the inner wall of the pump head housing, reducing the wear of the fan-shaped rotor, extending its service life, and has a simple structure, easy processing, and reduced production costs.

[0016] In addition, the first scraper block and the second scraper block are respectively provided with a first rubber layer and a second rubber layer. Under the premise of ensuring the strength of the sector rotor, the first rubber layer and the second rubber layer can scrape the inner wall of the feed cavity, while protecting the wall of the feed cavity, improving the conveying efficiency, and being easy to clean, avoiding the inconvenience caused by disassembly during cleaning.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0019] Figure 2 A top view of the rotor in an embodiment of the present utility model;

[0020] Figure 3 This is a front view of the rotor in the embodiment of the present utility model;

[0021] Figure 4 This is a structural diagram of the first scraper block in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of the second scraper block in an embodiment of the present utility model.

[0023] In the figure: 1. Pump head housing; 11. Feed cavity; 12. First rotating shaft; 13. Second rotating shaft; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Fan-shaped rotor; 41. Spline groove; 42. First T-shaped mounting groove; 43. Second T-shaped mounting groove; 5. First scraper block; 51. First T-shaped block; 52. First rubber coating; 53. First slope; 6. Second scraper block; 61. Second T-shaped block; 62. Second rubber coating; 63. Second slope. DETAILED DESCRIPTION

[0024] like Figure 1-5 As shown: A rotor pump head with automatic scraping and no rotational gap for curdlan, comprising a pump head housing 1, a feed cavity 11 being provided in the pump head housing 1, two fan-shaped rotors 4 with opposite rotation directions being rotatably installed in the feed cavity 11, a first scraper block 5 being detachably installed on the outer surface of the fan head of the fan rotor 4, the end of the first scraper block 5 being in contact with the side cavity wall of the feed cavity 11, a second scraper block 6 being detachably installed at the middle position of the fan surface on both sides of the fan rotor 4, the end of the second scraper block 6 being in contact with the two cavity walls in the thickness direction of the feed cavity 11.

[0025] A liquid inlet pipe 2 is connected to one side surface of the pump head housing 1 , and a liquid outlet pipe 3 is connected to a position corresponding to the liquid inlet pipe 2 on the other side surface of the pump head housing 1 .

[0026] A sealing cover for sealing is also fixedly installed on the end surface of the pump head housing 1 by bolts, which is not shown in the figure. The sealing cover structure is a sealing cover commonly used in rotor pumps in the prior art and will not be described in detail here.

[0027] With this design, the feeding cavity 11 is a sealed cavity.

[0028] During the production process of curdlan, the liquid to be transported is sucked in from the liquid inlet pipe 2 and discharged from the liquid outlet pipe 3.

[0029] A first rotating shaft 12 is rotatably mounted at an upper middle position of the feeding cavity 11 via a bearing, and a second rotating shaft 13 is rotatably mounted at a lower middle position of the feeding cavity 11 via a bearing.

[0030] The first rotating shaft 12 and the second rotating shaft 13 are arranged symmetrically, and the other ends of the first rotating shaft 12 and the second rotating shaft 13 pass through the cavity wall of the feeding cavity 11 and are connected to the motor of the rotor pump. The specific connection method is that the first rotating shaft 12 is fixedly connected to the power output end of the motor through a coupling, and the first rotating shaft 12 and the second rotating shaft 13 are engaged by gears to realize reverse direction transmission. The specific connection method is well known in the commonly used rotor pump technology and will not be described in detail here.

[0031] The first rotating shaft 12 and the second rotating shaft 13 rotate in opposite directions.

[0032] Mechanical seals are provided at the rotational connections between the first rotating shaft 12, the second rotating shaft 13 and the feeding cavity 11 to prevent the liquid from leaking from the connections. The specific mechanical seal installation method is well known in the prior art and will not be described here in detail.

[0033] The ends of the first rotating shaft 12 and the second rotating shaft 13 located in the feeding cavity 11 are both provided with splines, which are not marked in the figure.

[0034] A spline groove 41 is provided at the middle of the sector rotor 4 , and the size of the spline groove 41 matches the spline.

[0035] With this design, the two sector rotors 4 are fixedly mounted at the ends of the first rotating shaft 12 and the second rotating shaft 13 respectively through the spline grooves 41 and the splines, and the two sector rotors 4 rotate in opposite directions at the same time.

[0036] like Figure 2-4 As shown, a first T-shaped mounting groove 42 is provided on the outer surface of the fan head of the fan-shaped rotor 4. The size of the first T-shaped mounting groove 42 matches the outer size of the first T-shaped block 51. With this design, the first T-shaped block 51 is inserted into the corresponding first T-shaped mounting groove 42, which is convenient for disassembly and replacement.

[0037] A second T-shaped mounting groove 43 is provided at the middle position on both side surfaces in the thickness direction of the sector rotor 4. The size of the second T-shaped mounting groove 43 matches the external size of the second scraper block 6. In this design, the second scraper block 6 is inserted into the corresponding second T-shaped mounting groove 43, which is convenient for disassembly and replacement.

[0038] A third T-shaped mounting groove and a fourth T-shaped mounting groove are formed on the end surfaces of the first rotating shaft 12 and the second rotating shaft 13 at positions corresponding to the second T-shaped mounting groove 43 .

[0039] The dimensions of the third T-shaped mounting groove and the fourth T-shaped mounting groove match the external dimensions of the second scraper block 6. With this design, when the second scraper block 6 is fully inserted, no gap is generated at the junction of the end faces of the first rotating shaft 12 and the second rotating shaft 13 and the fan surface of the fan-shaped rotor 4.

[0040] like Figure 4 As shown, the first scraper block 5 includes a first T-shaped block 51 inserted into the first T-shaped mounting groove 42 , and two symmetrically arranged first slopes 53 are provided at the end of the first T-shaped block 51 .

[0041] A first rubber coating layer 52 is adhered to the first slope 53, and the first rubber coating layer 52 is in contact with the side wall of the feeding cavity 11. With this design, when the fan-shaped rotor 4 rotates, it scrapes the side wall of the feeding cavity 11, and at the same time eliminates the gap between the fan head of the fan-shaped rotor 4 and the side wall of the feeding cavity 11, further improving the material suction effect.

[0042] like Figure 5 As shown, the second scraper block 6 includes a second T-shaped block 61 inserted into the second T-shaped mounting groove 43 , and two symmetrically arranged second slopes 63 are provided at the end of the second T-shaped block 61 .

[0043] A second rubber coating layer 62 is adhered to the second slope 63 .

[0044] The second rubber coating layer 62 is in contact with a side wall of the feeding cavity 11 in the thickness direction and the inner surface of the sealing cover.

[0045] With this design, when the sector rotor 4 rotates to convey materials, the second scraper block 6 acts on the side wall of the conveying cavity 11 and the inner surface of the sealing cover at the same time, and can scrape off the adhered materials.

[0046] In this embodiment, the material of the first T-shaped block 51 and the second T-shaped block 61 is the same as that of the sector rotor 4 , which can enhance the structural strength of the sector rotor 4 .

[0047] The first rubber coating layer 52 and the second rubber coating layer 62 are made of wear-resistant rubber material through a rubber coating process, which increases the sealing performance and prevents the material from being stuck between the sector rotor 4 and the inner wall of the feeding cavity 11, thereby affecting the feeding efficiency.

[0048] The thickness of the first rubber layer 52 and the second rubber layer 62 is set to 1-3 mm.

[0049] During use, the material for producing curdlan is sucked in from the liquid inlet pipe 2 and discharged through the liquid outlet pipe 3 under the rotation of the sector rotor 4. During this period, the first scraper block 5 of the sector rotor 4 scrapes the side wall of the feeding cavity 11, and the second scraper block 6 scrapes the side wall of the feeding cavity 11 in the thickness direction and the inner surface of the sealing cover, thereby improving the conveying efficiency.

[0050] When the rotor pump is finished using and the pump head is to be cleaned, it is only necessary to connect the liquid inlet pipe 2 to the water pipe. In this way, under the rotation of the sector rotor 4, the first scraper block 5 of the sector rotor 4 scrapes the side wall of the feeding cavity 11, and the second scraper block 6 scrapes and cleans the side wall of the feeding cavity 11 in the thickness direction and the inner surface of the sealing cover, thereby avoiding the labor cost caused by disassembling and assembling the sealing cover and simplifying the operation.

[0051] For ordinary technicians in this field, based on the teachings of this utility model, without departing from the principles and spirit of this utility model, changes, modifications, replacements and deformations made to the implementation methods are still within the scope of protection of this utility model.

Claims

1. A rotor pump head for automatic scraping and cleaning of curdlan without rotational clearance, comprising a pump head housing (1), characterized in that: A delivery cavity (11) is provided in the pump head housing (1), and two fan-shaped rotors (4) with opposite rotation directions are rotatably installed in the delivery cavity (11). A first scraper block (5) is detachably installed on the outer surface of the fan head of the fan-shaped rotor (4), and the end of the first scraper block (5) is in contact with the side cavity wall of the delivery cavity (11). A second scraper block (6) is detachably installed at the middle position of the fan surface on both sides of the fan-shaped rotor (4), and the end of the second scraper block (6) is in contact with the two cavity walls of the delivery cavity (11) in the thickness direction.

2. The rotor pump head for curdlan with zero rotational clearance and automatic scraping and cleaning according to claim 1, characterized in that: A liquid inlet pipe (2) is connected to one side surface of the pump head housing (1), and a liquid outlet pipe (3) is connected to a position corresponding to the liquid inlet pipe (2) on the other side surface of the pump head housing (1).

3. The rotor pump head for curdlan with zero rotational clearance and automatic scraping and cleaning according to claim 2, characterized in that: A first rotating shaft (12) is rotatably mounted at an upper middle position of the feeding cavity (11), and a second rotating shaft (13) is rotatably mounted at a lower middle position of the feeding cavity (11). The first rotating shaft (12) and the second rotating shaft (13) rotate in opposite directions.

4. The rotor pump head for curdlan with zero rotational clearance and automatic scraping and cleaning according to claim 3, characterized in that: A first T-shaped mounting groove (42) is provided on the outer surface of the fan head of the fan-shaped rotor (4), and the size of the first T-shaped mounting groove (42) matches the outer size of the first T-shaped block (51).

5. The rotor pump head for curdlan with zero rotational clearance and automatic scraping and cleaning according to claim 4, characterized in that: A second T-shaped mounting groove (43) is provided at the middle position on both side surfaces in the thickness direction of the sector-shaped rotor (4), and the size of the second T-shaped mounting groove (43) matches the outer dimensions of the second scraper block (6).

6. The rotor pump head for curdlan with zero rotational clearance and automatic scraping and cleaning according to claim 5, characterized in that: The first scraper block (5) comprises a first T-shaped block (51) inserted into the first T-shaped mounting groove (42), two symmetrically arranged first slopes (53) are provided at the end of the first T-shaped block (51), a first rubber coating (52) is adhered to the first slope (53), and the first rubber coating (52) is in contact with the side wall of the feeding cavity (11).

7. The rotor pump head for curdlan with zero rotational clearance and automatic scraping and cleaning according to claim 6, characterized in that: The second scraper block (6) comprises a second T-shaped block (61) inserted into the second T-shaped mounting groove (43), two symmetrically arranged second slopes (63) are provided at the end of the second T-shaped block (61), and a second rubber coating (62) is adhered to the second slopes (63).

8. The rotor pump head for curdlan with zero rotational clearance and automatic scraping and cleaning according to claim 7, characterized in that: The first rubber coating layer (52) and the second rubber coating layer (62) are made of wear-resistant rubber material, and the thickness of the first rubber coating layer (52) and the second rubber coating layer (62) is set to 1-3 mm.

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