Axial flow pump device with filtering function

Abstract

The utility model discloses an axial flow pump device with a filtering function, which comprises an axial flow pump body, the axial flow pump body is provided with a water inlet, a filtering mechanism, a pumping chamber, an impeller and a shaft seal device, the water inlet is arranged at the front end of a shell of the axial flow pump body, the filtering mechanism comprises a filter cone and a filter screen, and the filter cone is arranged at the front end of the shell of the axial flow pump body. The axial flow pump body is provided with a pump shaft in a penetrating mode, the pump shaft penetrates through the impeller and the pumping chamber, the pumping chamber is located above the impeller, the shaft sealing device is arranged at the position, penetrating out of a shaft hole of the axial flow pump body, of the pump shaft, and the problem that a traditional axial flow pump is prone to being blocked when pumping water containing impurities is solved. The pumping efficiency is improved, the service life of the pump body is prolonged, the applicability is enhanced, energy is saved, consumption is reduced, and high practicability is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of axial flow pumps, and in particular relates to an axial flow pump device with a filtering function. Background Art

[0002] Axial flow pumps are common fluid conveying equipment and are widely used in agricultural irrigation, urban drainage, industrial circulating water systems and other fields. However, when pumping water containing impurities, traditional axial flow pumps are easily blocked by impurities, which affects their normal operation and life. Therefore, it is particularly important to design an axial flow pump device with filtering function. Summary of the invention

[0003] To solve the above problems, the utility model discloses an axial flow pump device with a filtering function, comprising an axial flow pump body, the axial flow pump body being provided with a water inlet, a filtering mechanism, a water pressure chamber, an impeller, and a shaft sealing device, the water inlet being opened at the front end of the outer shell of the axial flow pump body, the filtering mechanism comprising a filter bucket and a filter screen, the axial flow pump body being penetrated by a pump shaft, the pump shaft being penetrated by an impeller and a water pressure chamber, the water pressure chamber being located above the impeller, and the shaft sealing device being arranged at the shaft hole where the pump shaft passes through the axial flow pump body, so as to solve the problem that the traditional axial flow pump is easily blocked when pumping water containing impurities.

[0004] In order to achieve the above object, the technical solution of the utility model is as follows:

[0005] An axial flow pump device with a filtering function comprises an axial flow pump body, the axial flow pump body is provided with a water inlet, a filtering mechanism, a water pressure chamber, an impeller, and a shaft sealing device, the water inlet is opened at the front end of the shell of the axial flow pump body, the filtering mechanism comprises a filter bucket and a filter screen, the filtering mechanism is detachably arranged on the axial flow pump body, and a suitable aperture can be selected according to actual conditions, the filter bucket is used for preliminarily collecting larger impurities, and the filter screen is used for capturing fine particles; a pump shaft is arranged through the axial flow pump body, the pump shaft passes through the impeller and the water pressure chamber, the water pressure chamber is located above the impeller, and the shaft sealing device is arranged at the shaft hole where the pump shaft passes through the axial flow pump body.

[0006] As an improvement of the present utility model, the impeller includes blades, a hub, and a water guide cone. The number of the blades is 4 to 6. The water guide cone is arranged at the front end of the blades. The blades are welded or fixed to the hub by nuts and positioning pins. The impeller generates axial force by rotation to make the liquid flow, and converts kinetic energy into pressure energy to send the liquid into the outlet.

[0007] As an improvement of the present utility model, the pressure water chamber includes guide vanes, a guide vane hub, and an outer shell. The number of the guide vanes is 6 to 12. The guide vane hub is used to install the guide vanes. The outer shell is in the shape of an inverted cone. The pressure water chamber wraps the guide vanes inside to convert the rotational motion of the water flow flowing out of the impeller into axial motion and gradually reduce the flow velocity, thereby converting part of the kinetic energy into pressure energy.

[0008] As an improvement of the utility model, the water inlet is trumpet-shaped, which introduces the water flow into the impeller evenly and smoothly with minimum loss. Preferably, the water inlet can adopt a streamlined cast iron trumpet pipe, whose diameter is 1.5 times the diameter of the impeller.

[0009] As an improvement of the utility model, a bearing is provided at the supporting point of the pump shaft, the pump shaft is a hollow shaft, and the shaft sealing device is a stuffing box to prevent leakage of pressurized water.

[0010] As an improvement of the utility model, a water outlet elbow is provided at the rear end of the shell of the axial flow pump body, and the elbow has a bending angle of 60° to smoothly lead the water out of the pump body.

[0011] The beneficial effects of the utility model are:

[0012] The present application sets a filtering mechanism to effectively filter impurities entering the pump body, prevent impurities from clogging the internal components of the pump body, and improve pumping efficiency and pump life. At the same time, the water inlet is designed in a trumpet shape to increase the water inlet area, and the impeller adopts a water guide cone design to guide the fluid into the blades to improve pumping efficiency. The pump shaft adopts a hollow shaft design to reduce weight and cost, thereby enhancing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 A top view of the impeller.

[0015] Figure 3 This is the front view of the impeller.

[0016] Figure 4 It is a structural diagram of the water pressure chamber.

[0017] List of Figure Symbols:

[0018] 1. Axial flow pump body; 2. Water inlet; 3. Filter bucket; 4. Filter screen; 5. Impeller; 51. Blades; 52. Hub; 53. Water guide cone; 6. Water pressure chamber; 61. Guide vanes; 62. Guide vane hub; 63. Casing; 7. Pump shaft; 8. Bearing; 9. Shaft sealing device; 10. Water outlet elbow. DETAILED DESCRIPTION

[0019] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0021] As shown in the figure, an axial flow pump device with a filtering function described in the utility model includes an axial flow pump body 1, and the axial flow pump body 1 is provided with a water inlet 2, a filtering mechanism, a water pressure chamber 6, an impeller 5, and a shaft sealing device 9. The water inlet 2 is opened at the front end of the shell 63 of the axial flow pump body 1, and the filtering mechanism includes a filter bucket 3 and a filter screen 4. The filtering mechanism is detachably arranged on the axial flow pump body 1, and a suitable aperture can be selected according to actual conditions. The filter bucket 3 is used for preliminarily collecting larger impurities, and the filter screen 4 is used for capturing fine particles; the axial flow pump body 1 is penetrated by a pump shaft 7, and the pump shaft 7 penetrates the impeller 5 and the water pressure chamber, and the water pressure chamber 6 is located above the impeller 5, and the shaft sealing device 9 is arranged at the shaft hole where the pump shaft 7 passes through the axial flow pump body 1.

[0022] The impeller 5 described in the utility model includes blades 51, a hub 52, and a water guide cone 53. The number of the blades 51 is 4 to 6. The water guide cone 53 is arranged at the front end of the blades 51. The blades 51 are welded or fixed to the hub 52 by nuts and positioning pins. The impeller 5 generates axial force by rotation to make the liquid flow, and converts kinetic energy into pressure energy to send the liquid to the outlet.

[0023] The water pressure chamber 6 described in the utility model includes a guide vane 61, a guide vane hub 62, and a shell 63. The number of the guide vanes 61 is 6 to 12. The guide vane hub 62 is used to install the guide vanes 61. The shell 63 is in an inverted cone shape. The water pressure chamber 6 wraps the guide vanes 61 inside to convert the rotational motion of the water flow flowing out of the impeller 5 into axial motion, and gradually reduces the flow velocity, thereby converting part of the kinetic energy into pressure energy.

[0024] The water inlet 2 described in the utility model is trumpet-shaped, and water flow is introduced into the impeller 5 evenly and smoothly with minimum loss. Preferably, the water inlet 2 can adopt a streamlined cast iron trumpet pipe, and its diameter is 1.5 times the diameter of the impeller 5.

[0025] The pump shaft 7 of the utility model is provided with bearings 8 at the supporting points. The pump shaft 7 is a hollow shaft. The shaft sealing device 9 is a stuffing box to prevent leakage of pressurized water.

[0026] The rear end of the shell 63 of the axial flow pump body 1 of the utility model is provided with a water outlet elbow 10, the elbow angle of which is 60 degrees, so that the water flow is smoothly led out of the pump body.

[0027] Specifically, the workflow of the utility model is as follows:

[0028] When the water flows into the water inlet 2 from the front end of the housing 63 of the axial flow pump body 1, it will first pass through the trumpet-shaped water inlet 2. The design of the water inlet 2 allows the water flow to be introduced evenly and smoothly with minimal loss. Subsequently, the water flows into the filtering mechanism. The filtering mechanism includes a filter bucket 3 and a filter screen 4. The filter bucket 3 is used to preliminarily filter larger impurities, such as stones, branches, etc., to prevent them from entering the pump body and causing damage. The filter screen 4 is used to capture fine particles, such as silt, suspended matter, etc., to ensure that the water flow entering the pump body is relatively pure. The filtering mechanism is designed to be detachable, which is convenient for users to select the appropriate pore size of the filter screen 4 according to actual conditions, and to clean or replace it as needed.

[0029] The impeller 5 is the core component of the pumping process. When the pump shaft 7 rotates, the impeller 5 also rotates, generating an axial force to cause the liquid to flow. The water guide cone 53 is arranged at the front end of the blade 51, which is used to guide the fluid into the blade 51, thereby improving the pumping efficiency. The rotation of the impeller 5 accelerates the water flow and generates pressure, pushing the water flow into the water pressure chamber 6. The water pressure chamber 6 is located above the impeller 5, and converts the rotational motion of the water flow out of the impeller 5 into axial motion. In the water pressure chamber 6, the water flow is guided by the guide vane 61, the flow velocity gradually decreases, and part of the kinetic energy is converted into pressure energy. At the same time, the outer shell 63 is in the shape of an inverted cone, which wraps the guide vane 61 inside, helps to form a stable flow field, and pushes the water flow into the outlet elbow 10.

[0030] The shaft seal device 9 is arranged at the shaft hole where the pump shaft 7 passes through the axial flow pump body 1, and adopts the form of a stuffing box. When the pump shaft 7 rotates, the shaft seal device 9 can prevent the pressure water from leaking out of the pump body, ensuring the continuity and stability of the pumping process. The bearing 8 is provided at the support point of the pump shaft 7 to support the rotation of the pump shaft 7. The pump shaft 7 is designed as a hollow shaft to reduce weight and reduce costs.

[0031] It should be noted that the drawings only illustrate the technical idea of ​​the utility model, and the protection scope of the utility model cannot be limited by this shape. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. For example, a rotating shaft is provided on the filter device, the rotating shaft is connected to the motor, and a scrubbing scraper is fixedly connected to the rotating shaft. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. An axial flow pump device with filtering function, comprising an axial flow pump body, characterized in that: The axial flow pump body is provided with a water inlet, a filtering mechanism, a water pressure chamber, an impeller, and a shaft sealing device. The water inlet is opened at the front end of the outer shell of the axial flow pump body. The filtering mechanism includes a filter bucket and a filter screen. The axial flow pump body is penetrated by a pump shaft. The pump shaft penetrates the impeller and the water pressure chamber. The water pressure chamber is located above the impeller. The shaft sealing device is arranged at the shaft hole where the pump shaft passes through the axial flow pump body.

2. The axial flow pump device with filtering function according to claim 1, characterized in that: The impeller comprises blades, a hub and a water guide cone. The number of the blades is 4 to 6. The water guide cone is arranged at the front end of the blades. The blades are welded or fixed to the hub by nuts and positioning pins.

3. The axial flow pump device with filtering function according to claim 2, characterized in that: The water pressure chamber comprises a guide vane, a guide vane hub and an outer shell. The number of the guide vanes is 6 to 12. The guide vane hub is used to install the guide vanes. The outer shell is in an inverted cone shape and wraps the guide vanes inside.

4. The axial flow pump device with filtering function according to claim 1, characterized in that: The water inlet is trumpet-shaped.

5. The axial flow pump device with filtering function according to claim 1, characterized in that: A bearing is provided at the supporting point of the pump shaft, the pump shaft is a hollow shaft, and the shaft sealing device is a stuffing box.

6. The axial flow pump device with filtering function according to claim 5, characterized in that: A water outlet elbow is provided at the rear end of the shell of the axial flow pump body, and the elbow has a bending angle of 60°.

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