Cantilevered single stage screw pump

Abstract

The utility model relates to the technical field of agricultural irrigation and city drainage, and concretely is a cantilever single-stage spiral pump, including impeller, the impeller rotation is installed in the inside of water suction chamber, the impeller sleeve joint is installed in one end of shaft, is equipped with the shaft key between the impeller and the shaft, the other end of the shaft is installed with bearing, and the bearing is located in the inside of suspension bracket, and one end of the suspension bracket is equipped with bearing end cover. The structure cantilever single-stage spiral pump gradually pushes solid particles to the edge of impeller, avoids the performance decline caused by the particle blockage of traditional centrifugal pump, in sewage treatment, can efficiently transport the sludge containing fiber, hair and other impurities, and the impeller channel is wide, and the passing capacity is far more than ordinary centrifugal pump, the blade adopts high wear-resistant alloy material, and the surface is treated by hardening, which significantly prolongs the service life.

Description

Technical Field

[0001] This utility model relates to the field of agricultural irrigation and urban drainage technology, specifically to a cantilevered single-stage spiral pump. Background Technology

[0002] As agricultural irrigation and urban drainage equipment, stable operation is an important condition for ensuring safe production. Existing single-stage pumps all use closed impellers, and the transported medium must be free of impurities. Impurities such as mud, sand and small stones in the water can easily cause impeller wear and seizing, leading to damage. In order to solve these problems, a water pump that can operate stably in water containing impurities and is easy to clean is needed. Therefore, a cantilever single-stage spiral pump is proposed. Utility Model Content

[0003] The main objective of this invention is to provide a cantilevered single-stage spiral pump that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A cantilevered single-stage spiral pump includes an impeller rotatably mounted inside a suction chamber, the impeller being sleeved and mounted on one end of a shaft, a key being provided between the impeller and the shaft, a bearing being sleeved and mounted on the other end of the shaft, the bearing being located inside a suspension, and a bearing end cap being provided at one end of the suspension. One end of the suction chamber is fixedly connected to one end of the pump body by bolts, and the other end of the pump body is fixedly connected to one side of the pump cover by bolts. A sealing gasket is provided between the pump body and the pump cover, and a rear sealing ring is provided between the impeller and the pump cover.

[0005] Specifically, a bushing is fitted onto the outer side of the shaft, and a first O-ring is provided between the bushing and the impeller.

[0006] Specifically, a retaining ring is provided between the bushing and the pump cover, one end of the retaining ring is connected to one end of the stationary seat ring, a mechanical seal is installed at the end of the pump cover away from the impeller, and a second O-ring is provided between the mechanical seal and the pump cover.

[0007] Specifically, the suspension is fixedly connected to one side of the pump cover by bolts, and the shaft is located inside the suspension and passes through the pump cover.

[0008] Specifically, the outer side of the suspension is fixedly connected to the suspension bracket, and the pump body is equipped with a plug.

[0009] The beneficial effects of this utility model are: The present invention discloses a cantilevered single-stage spiral pump. This structure of the cantilevered single-stage spiral pump gradually pushes solid particles towards the edge of the impeller, avoiding the performance degradation caused by particle blockage in traditional centrifugal pumps. In sewage treatment, it can efficiently transport sludge containing impurities such as fibers and hair. The impeller channel is wide, far exceeding the throughput capacity of ordinary centrifugal pumps. The blades are made of high wear-resistant alloy material and the surface is hardened, significantly extending the service life. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the planar structure of the present invention; Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; In the diagram: 1. Suction chamber; 2. Impeller; 3. Shaft key; 4. Pump body; 5. Rear sealing ring; 6. Pump cover; 7. Sealing gasket; 8. First O-ring; 9. Retaining ring; 10. Shaft sleeve; 11. Second O-ring; 12. Mechanical seal; 13. Stationary seat ring; 14. Plug; 15. Suspension; 16. Shaft; 17. Bearing; 18. Bearing end cover; 19. Suspension bracket. Detailed Implementation

[0012] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0013] As one embodiment of this utility model, such as Figures 1-2 As shown, the cantilevered single-stage spiral pump of this utility model includes an impeller 2, which is rotatably installed inside the suction chamber 1. The impeller 2 is sleeved and installed on one end of the shaft 16. A shaft key 3 is provided between the impeller 2 and the shaft 16. A bearing 17 is sleeved and installed on the other end of the shaft 16. The bearing 17 is located inside the suspension 15. A bearing end cover 18 is provided on one end of the suspension 15. One end of the suction chamber 1 is fixedly connected to one end of the pump body 4 by bolts, and the other end of the pump body 4 is fixedly connected to one side of the pump cover 6 by bolts. A sealing gasket 7 is provided between the pump body 4 and the pump cover 6, and a rear sealing ring 5 is provided between the impeller 2 and the pump cover 6.

[0014] In use, shaft 16 is driven to rotate by a motor or other power source, and the torque is transmitted to impeller 2 through shaft key 3, causing it to rotate synchronously at high speed. Bearing 17 supports shaft 16 and bears radial load, ensuring smooth operation of the shaft system; bearing end cover 18 is used to axially position and seal bearing 17, preventing lubricant leakage and blocking external impurities from entering.

[0015] The present invention also includes a bushing 10 sleeved on the outer side of the shaft 16, and a first O-ring 8 is provided between the bushing 10 and the impeller 2.

[0016] During use, the bushing 10 protects the shaft 16 from wear and corrosion, and the first O-ring 8 is used to seal the gap between the bushing 10 and the impeller 2 to prevent the conveyed medium from leaking along the shaft surface.

[0017] The present invention also includes a retaining ring 9 between the bushing 10 and the pump cover 6, one end of the retaining ring 9 being connected to one end of the stationary seat ring 13, a mechanical seal 12 being installed at the end of the pump cover 6 away from the impeller 2, and a second O-ring 11 being provided between the mechanical seal 12 and the pump cover 6.

[0018] In use, the retaining ring 9 is used to axially position the bushing 10 and together with the stationary seat ring 13, constrains the stationary ring part of the mechanical seal 12. The mechanical seal 12 achieves dynamic sealing between the shaft and the pump cover 6 during high-speed rotation to prevent liquid leakage. The second O-ring 11 is used to seal the static interface between the stationary ring of the mechanical seal 12 and the pump cover 6.

[0019] The present invention also includes that the suspension 15 is fixedly connected to one side of the pump cover 6 by bolts, and the shaft 16 is disposed inside the suspension 15 and passes through the pump cover 6.

[0020] During use, the suspension 15 provides installation space and protection for the bearing 17, and ensures the alignment accuracy of the shaft 16 and the stability of the system through a rigid connection with the pump cover 6, so that the impeller 2 does not interfere or rub when it runs at high speed in the pump body 4.

[0021] The present invention also includes that the outer side of the suspension 15 is fixedly connected to the suspension bracket 19, and the pump body 4 is equipped with a plug 14.

[0022] In use, water is drawn in from the suction side of the suction chamber 1 and rotated by the spiral impeller 2 driven by the shaft 16. The impeller 2 rotates synchronously with the shaft 16 through the shaft key 3. The rotating impeller 2 transfers mechanical energy to the water, increasing its pressure and flow rate. Water containing a small amount of impurities is pushed into the flow channel of the pump body 4 and finally discharged from the discharge side. The shaft 16 is supported on one side by the bearing 17 in the suspension 15, forming a cantilever structure. The bearing 17 is positioned and pressed by the bearing cover 18.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cantilevered single-stage spiral pump, comprising an impeller (2), characterized in that, The impeller (2) is rotatably installed inside the suction chamber (1). The impeller (2) is sleeved and installed on one end of the shaft (16). A shaft key (3) is provided between the impeller (2) and the shaft (16). A bearing (17) is sleeved and installed on the other end of the shaft (16). The bearing (17) is located inside the suspension (15). A bearing end cap (18) is provided on one end of the suspension (15). One end of the suction chamber (1) is fixedly connected to one end of the pump body (4) by bolts, and the other end of the pump body (4) is fixedly connected to one side of the pump cover (6) by bolts. A sealing gasket (7) is provided between the pump body (4) and the pump cover (6), and a rear sealing ring (5) is provided between the impeller (2) and the pump cover (6).

2. The cantilevered single-stage screw pump according to claim 1, characterized in that, A bushing (10) is fitted onto the outer side of the shaft (16), and a first O-ring (8) is provided between the bushing (10) and the impeller (2).

3. A cantilevered single-stage spiral pump according to claim 2, characterized in that, A retaining ring (9) is provided between the bushing (10) and the pump cover (6). One end of the retaining ring (9) is connected to one end of the stationary seat ring (13). A mechanical seal (12) is installed on the end of the pump cover (6) away from the impeller (2). A second O-ring (11) is provided between the mechanical seal (12) and the pump cover (6).

4. A cantilevered single-stage spiral pump according to claim 1, characterized in that, The suspension (15) is fixedly connected to one side of the pump cover (6) by bolts, and the shaft (16) is located inside the suspension (15) and passes through the pump cover (6).

5. A cantilevered single-stage screw pump according to claim 1, characterized in that, The outer side of the suspension (15) is fixedly connected to the suspension bracket (19), and the pump body (4) is equipped with a plug (14).

Images