Axial flow pump

Abstract

The utility model relates to the technical field of non-variable-capacity pumps, and discloses an axial flow pump which comprises a pump shell, a water outlet is formed in the left side of the pump shell, a fixing frame is fixedly connected to the outer portion of the top end of the pump shell, a motor is fixedly connected to the inner wall of the bottom end of the fixing frame, and a pump shaft is fixedly connected to the driving end of the motor. The inner wall of the pump shell is rotationally connected with a protection frame, a plurality of fixing strips are fixedly connected into the protection frame, a plurality of impellers are fixedly connected to the sides, close to each other, of the fixing strips, and two flange plates are fixedly connected to the outer portion of the pump shell. Displacement or deformation caused by vibration or external loads is reduced, good sealing performance is provided, the sealing device is suitable for a sealing environment with strict requirements, and the quality stability and consistency of products can be guaranteed when filtering equipment is in a good operation state. Regular replacement of the filter screen is helpful for preventing impurities or pollutants from entering the production process.

Description

Technical Field

[0001] The utility model relates to the technical field of non-variable displacement pumps, in particular to an axial flow pump. Background Art

[0002] Axial flow pump, axial flow pump is a common type of centrifugal pump used to transport liquids. Unlike centrifugal pumps, axial flow pumps produce axial motion of the fluid through the rotation of the impeller, rather than radial motion. It is widely used in various industrial and civil fields. Its simple and reliable design and efficient performance make it one of the important equipment for liquid transportation.

[0003] After searching, the Chinese patent document announcement number is: CN214837373U, a single-stage centrifugal pump, including a pump casing, a water inlet channel, a flow chamber, and a water outlet channel connected in sequence are opened in the pump casing, one end of the pump casing is connected to a power box, the power box is connected to the pump shaft in a transmission manner, the pump shaft extends through the power box and penetrates into the pump casing and rotates synchronously to connect to the impeller located in the flow chamber; the pump casing is a structure radially divided from the flow chamber and is divided into a pump body and a pump cover, the flow chamber is respectively machined in half on the fitting surfaces of the pump body and the pump cover to form the flow chamber when the pump body and the pump cover are fitted, the pump body and the pump cover are detachably connected, the power box is connected to the end face of the pump cover facing away from the pump body, and the pump shaft passes through the pump cover and is connected to the impeller. This structure no longer uses a recessed flow chamber and a snap-on pump cover, and the pump casing is radially divided from the flow chamber into a pump body and a pump cover. The shape of the flow chamber is more convenient to design, and during manufacturing, it is less restricted by machining processing technology, and the flow channel of the required shape can be formed and designed to ensure the flow efficiency.

[0004] Although the specification of the above patent mentioned that "the pump shaft extends through the power box and penetrates the pump casing and rotates synchronously to connect the impeller located in the flow chamber; the pump casing is a structure radially split from the flow chamber and is divided into a pump body and a pump cover, and the flow chamber is processed in half on the snap-fitting surfaces of the pump body and the pump cover to form the flow chamber when the pump body and the pump cover are snapped together, and the pump body and the pump cover are detachably connected", the design that the pump shaft extends through the power box and penetrates the pump casing and rotates synchronously to connect the impeller increases the complexity of the mechanical parts. This may make the assembly and maintenance process more complicated and increase the possibility of failure. The pump casing is radially split and divided into a pump body and a pump cover, and a flow chamber is formed when snapped together, which may have a risk of leakage. For this reason, an axial flow pump is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an axial flow pump, which aims to improve the sealing and leakage prevention of the intermediate connecting pipelines in the prior art and the problem of preventing damage to the equipment when the fluid is extracted for filtering.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an axial flow pump, comprising a pump casing, a water outlet is arranged on the left side of the pump casing, a fixing frame is fixedly connected to the outside of the top end of the pump casing, a motor is fixedly connected to the inner wall of the bottom end of the fixing frame, a pump shaft is fixedly connected to the driving end of the motor, a protective frame is rotatably connected to the inner wall of the pump casing, a plurality of fixing bars are fixedly connected to the inside of the protective frame, a plurality of impellers are fixedly connected to the adjacent sides of the plurality of fixing bars, two flanges are fixedly connected to the outside of the pump casing, a convex ring is fixedly connected to the adjacent sides of the two flanges, a sealing ring is fixedly connected to the outside of the two convex rings, a plurality of bolts are fixedly connected to the inside of the flange, nuts are threadedly connected to the bottom ends of the bolts, and a filter assembly is fixedly connected to the bottom end of the pump casing.

[0007] As a further description of the above technical solution: the filter assembly includes a hollow column, a circular ring is fixedly connected to the interior of the hollow column, a filter cartridge is fixedly connected to the interior of the circular ring, springs are fixedly connected to the left and right sides of the filter cartridge, the far sides of the two springs are fixedly connected to limiting blocks, the far sides of the two limiting blocks are fixedly connected to connecting strips, and the far sides of the two connecting strips are fixedly connected to balls.

[0008] As a further description of the above technical solution: the outside of the pump shaft is rotatably connected to the inside of the pump casing, and the adjacent sides of the plurality of impellers are fixedly connected to the outside of the pump shaft.

[0009] As a further description of the above technical solution: the upper and lower ends of the sealing ring are in contact with the adjacent sides of the two flanges, and the external threads of the plurality of bolts are connected to the inside of the two flanges.

[0010] As a further description of the above technical solution: the top ends of the plurality of nuts are in contact with the bottom end of one of the flanges.

[0011] As a further description of the above technical solution: two circular grooves are provided inside the hollow column, and the outsides of the two balls are slidably connected to the insides of the circular grooves.

[0012] As a further description of the above technical solution: the outside of the filter cartridge is slidably connected to the inner wall of the hollow column.

[0013] As a further description of the above technical solution: a square opening is opened on the outside of the hollow column, and the inner wall of the hollow column is fixedly connected to the outside of the pump housing.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, when two pipes are connected, the flange is installed on the pipe mouth, and then the convex ring is fixed on one end of the flange, and then the two flanges are connected together, and then the sealing ring is fixed on the outside of the convex ring, and the two flanges are reinforced by bolts to reduce the displacement or deformation caused by vibration or external load, provide better sealing performance, and are suitable for strict sealing environments.

[0016] 2. In the utility model, the ring is pulled, the ring drives the filter plate, the ball on the filter plate applies pressure to the connecting strip, the connecting strip pushes the limit block, the limit block compresses the spring, so that the filter barrel slides inside the hollow column, achieving the effect of rapid replacement, keeping the filter equipment in good operating condition to ensure the quality stability and consistency of the product. Regular replacement of the filter screen helps prevent impurities or pollutants from entering the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an axial flow pump proposed by the utility model;

[0018] Figure 2 This is a structural schematic diagram of an impeller of an axial flow pump proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of a flange of an axial flow pump proposed by the utility model;

[0020] Figure 4 This is a structural schematic diagram of a filter cartridge of an axial flow pump proposed by the utility model;

[0021] Legend:

[0022] 1. Pump casing; 2. Water outlet; 3. Fixing bracket; 4. Motor; 5. Pump shaft; 6. Protection bracket; 7. Fixing strip; 8. Impeller; 9. Flange; 10. Raised ring; 11. Sealing ring; 12. Bolt; 13. Nut; 14. Hollow column; 15. Ring; 16. Filter cartridge; 17. Spring; 18. Limit block; 19. Connecting strip; 20. Ball. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 , Figure 2 , Figure 3The utility model provides an embodiment: an axial flow pump, including a pump housing 1, a water outlet 2 is provided on the left side of the pump housing 1, which is used to accommodate the internal components of the axial flow pump and ensure that the fluid flows correctly inside the pump. The top of the pump housing 1 is fixedly connected to the outside with a fixing frame 3, and the bottom inner wall of the fixing frame 3 is fixedly connected to a motor 4 to provide support. The driving end of the motor 4 is fixedly connected to a pump shaft 5 to push the fluid. The inner wall of the pump housing 1 is rotatably connected to a protective frame 6, and the inside of the protective frame 6 is fixedly connected to a plurality of fixing bars 7, and a plurality of impellers 8 are fixedly connected to the adjacent side of the plurality of fixing bars 7, and the impellers 8 are fixed to ensure their correct position and movement. The outside of the pump housing 1 is fixedly connected to two flanges 9, and the adjacent side of the two flanges 9 is fixedly connected to a convex ring 10 for connecting a pipeline. The outside of the two convex rings 10 is fixedly connected to a sealing ring 11 to ensure the sealing between the pump body and other parts to prevent fluid leakage. The inside of the flange 9 is fixedly connected to a plurality of bolts 12, and the bottom end of the bolt 12 is threadedly connected to a nut 13 for connecting and fixing the flange 9. The bottom end of the pump housing 1 is fixedly connected with a filter assembly to filter impurities and solid particles in the fluid.

[0025] Reference Figure 1 , Figure 4 The filter assembly includes a hollow column 14 for accommodating and supporting other filter assemblies. A circular ring 15 is fixedly connected inside the hollow column 14, and a filter cartridge 16 is fixedly connected inside the circular ring 15 to filter impurities and solid particles in the fluid to ensure the cleanliness of the fluid. Springs 17 are fixedly connected to the left and right sides of the filter cartridge 16 to provide rebound and reset force. The two springs 17 are fixedly connected to the far sides thereof with limit blocks 18 to limit the range of motion of the springs 17. The two limit blocks 18 are fixedly connected to the far sides thereof with connecting strips 19, and the two connecting strips 19 are fixedly connected to the far sides thereof with balls 20 to reduce friction at the connection.

[0026] Reference Figure 3 The upper and lower ends of the sealing ring 11 are in contact with the adjacent sides of the two flanges 9 to ensure the sealing of the filtration system and prevent fluid leakage. The external threads of the plurality of bolts 12 are connected to the inside of the two flanges 9.

[0027] Reference Figure 1 , Figure 2 , Figure 4, the outside of the pump shaft 5 is rotatably connected to the inside of the pump casing 1, and the adjacent sides of the multiple impellers 8 are fixedly connected to the outside of the pump shaft 5 so that the pump shaft 5 can rotate freely inside the pump casing 1. The top ends of the multiple nuts 13 are in contact with the bottom end of one of the flanges 9 to ensure the structural stability of the filtration system. Two circular grooves are provided inside the hollow column 14, and the outsides of the two balls 20 are slidably connected to the insides of the circular grooves so that the balls 20 are fixed inside the hollow column 14. The outside of the filter cartridge 16 is slidably connected to the inner wall of the hollow column 14. An orifice is provided on the outside of the hollow column 14, and the inner wall of the hollow column 14 is fixedly connected to the outside of the pump casing 1 to ensure the stability and sealing of the filtration system.

[0028] Working principle: When connecting the pipeline, use flange 9, install flange 9 at the pipeline mouth, make the two interfaces contact, then install the sealing ring 11 on the outside of the convex ring 10, and then reinforce the two flanges 9 with bolts 12, and then start the motor 4, the motor 4 drives the pump shaft 5 to rotate, the pump shaft 5 drives the impeller 8 to rotate, the fluid is extracted, and then the fluid flows out from the outlet 2. The flange 9 connection can provide higher rigidity, help maintain the relative position and direction of the connecting parts, and reduce the displacement or deformation caused by vibration or external loads. The flange 9 connection can be used with sealing gaskets or sealing strips to provide better sealing performance, which is suitable for strict sealing environments.

[0029] During installation, the ring 15 is pulled, and the ring 15 drives the filter plate. The ball 20 on the filter plate applies pressure to the connecting strip 19, and the connecting strip 19 pushes the limit block 18. The limit block 18 compresses the spring 17, so that the filter barrel slides inside the hollow column 14, achieving the effect of rapid replacement. Keeping the filter equipment in good operating condition can ensure the quality stability and consistency of the product. Regularly replacing the filter screen helps prevent impurities or contaminants from entering the production process.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An axial flow pump, comprising a pump casing (1), characterized in that: The left side of the pump housing (1) is provided with a water outlet (2); the top external part of the pump housing (1) is fixedly connected to a fixing frame (3); the bottom inner wall of the fixing frame (3) is fixedly connected to a motor (4); the driving end of the motor (4) is fixedly connected to a pump shaft (5); the inner wall of the pump housing (1) is rotatably connected to a protection frame (6); the interior of the protection frame (6) is fixedly connected to a plurality of fixing bars (7); a plurality of impellers (8) are fixedly connected to the adjacent sides of the plurality of fixing bars (7); the exterior of the pump housing (1) is fixedly connected to two flanges (9); adjacent sides of the two flanges (9) are fixedly connected to convex rings (10); the exteriors of the two convex rings (10) are fixedly connected to sealing rings (11); the interior of the flanges (9) is fixedly connected to a plurality of bolts (12); the bottom ends of the bolts (12) are threadedly connected to nuts (13); and the bottom end of the pump housing (1) is fixedly connected to a filter assembly.

2. An axial flow pump according to claim 1, characterized in that: The filter assembly comprises a hollow column (14), a circular ring (15) is fixedly connected inside the hollow column (14), a filter cartridge (16) is fixedly connected inside the circular ring (15), a spring (17) is fixedly connected to the left and right sides of the filter cartridge (16), the two springs (17) are fixedly connected to limiting blocks (18) on their far sides, the two limiting blocks (18) are fixedly connected to connecting strips (19) on their far sides, and the two connecting strips (19) are fixedly connected to balls (20) on their far sides.

3. An axial flow pump according to claim 1, characterized in that: The outside of the pump shaft (5) is rotatably connected to the inside of the pump housing (1), and adjacent sides of the plurality of impellers (8) are fixedly connected to the outside of the pump shaft (5).

4. An axial flow pump according to claim 1, characterized in that: The upper and lower ends of the sealing ring (11) are in contact with the adjacent sides of the two flanges (9), and the external threads of the plurality of bolts (12) are connected to the inside of the two flanges (9).

5. An axial flow pump according to claim 1, characterized in that: The top ends of the plurality of nuts (13) are in contact with the bottom end of one of the flanges (9).

6. An axial flow pump according to claim 2, characterized in that: Two circular grooves are formed inside the hollow column (14), and the outsides of the two spherical balls (20) are slidably connected inside the circular grooves.

7. An axial flow pump according to claim 2, characterized in that: The outside of the filter cartridge (16) is slidably connected to the inner wall of the hollow column (14).

8. An axial flow pump according to claim 2, characterized in that: A square opening is provided on the outside of the hollow column (14), and the inner wall of the hollow column (14) is fixedly connected to the outside of the pump casing (1).

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