Horizontal submersible sewage pump with Teflon coating
By coating Teflon on the pump body and impeller surface of the sewage pump and combining shock absorbing devices, the corrosion and wear problems of impurities in the sewage on the sewage pump are solved, the vibration is reduced, and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202421146970.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-24
AI Technical Summary
When existing sewage pumps deal with sewage containing solid particles and fibers, impeller wear and blockage, resulting in unstable operation, vibration and noise, and existing shock absorption measures cannot effectively solve the corrosion problem of impurities in sewage on the impeller.
Teflon coating is used to coat the pump body and impeller surface, and combined with shock absorbing devices, including shock absorbing brackets, shock absorbing rollers and limit structures, to reduce friction between the impeller and sewage particles and reduce vibration.
It effectively reduces the corrosion and wear of impurities in sewage on the pump body and impeller, reduces impeller vibration, and extends the service life of the sewage pump.
Smart Images
Figure CN222254353U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sewage pumps, in particular to a horizontal submersible sewage pump with a Teflon coating. Background Art
[0002] With the acceleration of urbanization, sewage treatment has become an important part of environmental protection and public health. As a key equipment in the sewage treatment system, the performance of the sewage pump directly affects the operating efficiency and stability of the entire system.
[0003] Sewage pumps usually need to work in sewage containing impurities such as solid particles and fibers. These impurities will cause wear and blockage on the impeller and sealing parts of the pump, thus affecting the operation of the pump.
[0004] During the operation of the sewage pump, due to the uneven flow of the medium and the influence of larger impurity particles in the sewage, the sewage pump often produces greater vibration and noise, which not only reduces the service life of the pump, but may also have adverse effects on the surrounding environment.
[0005] In order to extend the service life of the sewage pump in the prior art, a shock-absorbing base is often added to reduce the vibration of the sewage pump.
[0006] However, this method cannot solve the wear and corrosion of the impeller caused by impurities in the sewage.
[0007] Therefore, due to the limitations of existing technology, further research is needed. Summary of the invention
[0008] (I) Purpose of the invention: In order to solve the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a horizontal submersible sewage pump with an impeller shock-absorbing structure.
[0009] (II) Technical solution: In order to solve the above technical problems, the present technical solution provides a horizontal submersible sewage pump with a Teflon coating, comprising a pump body, an impeller, a transmission device and a sealed water tank, wherein a water inlet is arranged at one end of the pump body away from the transmission device, and a drain is arranged on the pump body, and the opening direction of the water inlet and the opening direction of the drain are perpendicular to each other;
[0010] The impeller is arranged inside the pump body at one end close to the water inlet and below the drain outlet; the transmission device is arranged coaxially with the impeller, and the transmission device includes a pump shaft, a bearing and a seal; the sealed water tank is fixed above the pump body and connected to the seal;
[0011] The inner surface of the pump body and the outer surface of the impeller are sprayed with Teflon coating;
[0012] A shock absorbing device is arranged on the inner wall of the pump body, and the shock absorbing device is arranged in a ring around the impeller; the shock absorbing device includes a shock absorbing bracket and a shock absorbing roller, or the shock absorbing device includes a shock absorbing bracket and a shock absorbing roller, a shock absorbing spring and a limiting structure.
[0013] Furthermore, the Teflon coating includes a polytetrafluoroethylene (PTFE) coating, a fluorinated ethylene propylene (FEP) coating, a polychlorotrifluoroethylene (ETFE) coating, and a polyvinylidene fluoride (PVDF) coating.
[0014] Furthermore, the impeller includes blades and wheel holes, the blades are arc-shaped plate-like components, multiple groups of blades are evenly arranged around the wheel holes, and the arc directions are consistent; the rotation direction of the impeller is opposite to the bending direction of the blades.
[0015] Furthermore, the impeller, the pump shaft, the bearing and the seal are coaxially arranged with the pump shaft as the axis.
[0016] Furthermore, one end of the pump shaft is connected to the impeller, and the other end extends to the outside of the pump body on a side away from the water inlet, and the pump shaft is connected to the motor on one side outside the pump body.
[0017] Furthermore, one end of the shock-absorbing bracket is connected to the pump body, and the other end is connected to the shock-absorbing roller; the shock-absorbing bracket is a rigid component or an elastic component, and the outer ring of the shock-absorbing roller can rotate freely.
[0018] Furthermore, the sealed water tank contains cooling water, the sealed water tank is connected to the seal via a hose, and the cooling water circulates in the seal and the sealed water tank.
[0019] Furthermore, the shock-absorbing roller includes an inner ring, a rolling body, a support frame and an outer ring, the inner ring and the outer ring are annular components, and the rolling body and the support frame are arranged between the outer wall of the inner ring and the inner wall of the outer ring.
[0020] Furthermore, the inner wall diameter of the outer ring is larger than the outer wall diameter of the inner ring; the diameter of the support frame is smaller than the inner wall diameter of the outer ring and larger than the outer wall diameter of the inner ring; the diameter of the rolling body is half of the difference between the inner wall diameter of the outer ring and the outer wall diameter of the inner ring.
[0021] Furthermore, the limiting structure includes a limiting shaft, a limiting angle and a limiting groove, the two ends of the limiting shaft are fixed in the grooves on the inner wall of the pump body, the middle part is connected to one end of the shock absorbing bracket, the shock absorbing bracket rotates around the limiting shaft, the shock absorbing bracket is set with a limiting groove in the direction close to the pump body, and a limiting angle is set in the direction away from the pump body.
[0022] Beneficial effects: The utility model provides a horizontal submersible sewage pump with Teflon coating, in which the inner surface of the pump body and the outer surface of the impeller are both provided with Teflon coating, which can effectively reduce the corrosion and wear of the pump body and the impeller by impurities in the sewage, and at the same time, a shock absorbing device is provided to reduce the friction between larger diameter particles in the sewage and the blade edge of the impeller during the sewage discharge process, further reduce the wear of the impeller, reduce the vibration of the impeller during the sewage discharge process, and extend the service life of the sewage pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a longitudinal cross-sectional structural schematic diagram of a horizontal submersible sewage pump with Teflon coating of the utility model;
[0024] Figure 2 It is a schematic diagram of the transverse cross-sectional structure of a horizontal submersible sewage pump with a Teflon coating of the utility model;
[0025] Figure 3 It is a structural schematic diagram of a shock absorbing device of a horizontal submersible sewage pump with a Teflon coating according to the utility model;
[0026] Figure 4 It is a structural schematic diagram of a preferred solution of a shock absorbing device of a horizontal submersible sewage pump with a Teflon coating according to the utility model;
[0027] Figure 5 It is a structural schematic diagram of a shock-absorbing bracket of a horizontal submersible sewage pump with a Teflon coating according to the utility model;
[0028] Figure 6 The utility model is a structural schematic diagram of a shock-absorbing roller of a horizontal submersible sewage pump with a Teflon coating.
[0029] Figure markings: 1-pump body, 2-impeller, 3-pump shaft, 4-bearing, 5-seal, 6-water inlet, 7-drain outlet, 8-shock absorber, 21-blade, 22-wheel hole, 81-shock absorber bracket, 82-shock absorber roller, 83-shock absorber spring, 84-limiting shaft, 85-limiting angle, 86-limiting groove, 821-inner ring, 822-rolling body, 823-support frame, 824-outer ring, 9-sealed water tank. DETAILED DESCRIPTION
[0030] The present invention is further described in detail below in conjunction with preferred embodiments. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.
[0031] The accompanying drawings are schematic diagrams of embodiments of the present invention. It should be noted that the drawings are only examples and are not drawn to scale, and should not be used to limit the actual protection scope of the present invention.
[0032] In this embodiment, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0033] A preferred embodiment of the utility model provides a horizontal submersible sewage pump with a Teflon coating. Figure 1 , Figure 2 As shown, it includes a pump body 1, an impeller 2, a transmission device, a shock absorbing device 8 and a sealed water tank 9. A water inlet 6 is provided at one end of the pump body 1 away from the transmission device, and a drain port 7 is provided on the upper side of the pump body 1. The opening direction of the water inlet 6 and the opening direction of the drain port 7 are perpendicular to each other. The inner surface of the pump body 1 is evenly sprayed with a Teflon coating, and the Teflon coating includes a polytetrafluoroethylene (PTFE) coating, a polyperfluoroethylene propylene (FEP) coating, a polychlorotrifluoroethylene (ETFE) coating, a polyvinylidene fluoride (PVDF) coating, etc.
[0034] The impeller 2 is arranged at one end of the pump body 1 near the water inlet 6 and below the drain port 7. The impeller 2 includes a wheel hole 22 and a plurality of blades 21. The blades 21 are arc-shaped plate-like components. The plurality of blades 21 are evenly arranged around the wheel hole 22 and have the same arc direction. The rotation direction of the impeller 2 is opposite to the bending direction of the blades 21. Figure 2 For example, the bending direction of the blade 21 is clockwise, and the rotation direction of the impeller 2 is counterclockwise. The outer surface of the impeller 2 is evenly sprayed with a Teflon coating, and the Teflon coating includes a polytetrafluoroethylene (PTFE) coating, a polyperfluoroethylene propylene (FEP) coating, a polytrifluoroethylene (ETFE) coating, a polyvinylidene fluoride (PVDF) coating, and the like.
[0035] The transmission device includes a pump shaft 3, a bearing 4 and a seal 5. The impeller 2, the pump shaft 3, the bearing 4 and the seal 5 are coaxially arranged with the pump shaft 3 as the axis, that is, the axial direction of the impeller 2, the axial direction of the pump shaft 3, the axial direction of the bearing 4 and the axial direction of the seal 5 are in the same direction, and the axial direction of the impeller 2, the axial direction of the pump shaft 3, the axial direction of the bearing 4 and the axial direction of the seal 5 are in the same direction as the opening direction of the water inlet 6. The wheel hole 22 of the impeller 2 is connected to one end of the pump shaft 3, and the other end of the pump shaft 3 extends to the outside of the pump body 1 away from the water inlet 6. The pump shaft 3 is connected to the motor on the side outside the pump body 1. The bearing 4 is arranged on the outside of the pump shaft 3, and the bearing 4 is arranged on the side of the pump shaft 3 close to the impeller 2. The inner ring of the pump shaft 4 is tightly connected to the pump shaft 3. Between the impeller 2 and the bearing 4, a seal 5 is arranged on the outside of the pump shaft 3 around the pump shaft 3.
[0036] The sealed water tank 9 is fixed above the pump body 1 , and cooling water is contained in the sealed water tank 9 . The sealed water tank 9 is connected to the seal 5 via a hose, and the cooling water circulates in the seal 5 and the sealed water tank 9 .
[0037] like Figure 3 As shown, the shock absorbing device 8 is arranged on the inner wall of the pump body 1 and is arranged in a ring around the impeller 2. The shock absorbing device 8 includes a shock absorbing bracket 81 and a shock absorbing roller 82. The shock absorbing bracket 81 is an elastic component, and the shock absorbing bracket 81 can be a spring made of elastic steel, phosphor bronze, stainless steel and other materials. One end of the shock absorbing bracket 81 is tightly connected to the pump body 1, and the other end of the shock absorbing bracket 81 is connected to the shock absorbing roller 82. The connection method of the shock absorbing bracket 81 and the pump body 1 can be welding. The shock absorbing bracket 81 deflects to one side of the inner wall of the pump body 1 with the connection point as the center. The deflection direction of the shock absorbing bracket 81 is the same as the rotation direction of the impeller 2, so that Figure 2 For example, the impeller 2 rotates counterclockwise, and the deflection direction of the shock-absorbing bracket 81 is counterclockwise with reference to the tangent direction of the inner wall of the pump body 1. The shock-absorbing bracket 81 forms an angle of 10 to 30 degrees with the tangent direction of the inner wall of the pump body 1 at the connection point.
[0038] Another preferred embodiment of the shock absorbing device 8 of the horizontal submersible sewage pump with Teflon coating of the utility model is as follows: Figure 4As shown, the shock absorbing device 8 includes a shock absorbing bracket 81, a shock absorbing roller 82, a shock absorbing spring 83 and a limiting structure. The limiting structure includes a limiting shaft 84, a limiting angle 85 and a limiting groove 86. The limiting structure is arranged in a groove on the inner wall of the pump body 1, and both ends of the limiting shaft 84 are fixed in the grooves on the inner wall of the pump body 1, and the middle part is connected to one end of the shock absorbing bracket 81. The shock absorbing bracket 81 can rotate around the limiting shaft 84. The shock absorbing bracket 81 is provided with a limiting groove 86 in the direction close to the pump body 1, and a limiting angle 85 in the direction away from the pump body 1. In this embodiment, the shock absorbing bracket 81 is a rigid component, and the shock absorbing spring 83 is an elastic component. The shock absorbing spring 83 can be a coil spring made of carbon steel, alloy steel, stainless steel, phosphor bronze and the like. A shock absorbing roller 82 is arranged at the end of the shock absorbing bracket 81 that is not connected to the limiting shaft 84 , a shock absorbing spring 83 is arranged between the shock absorbing bracket 81 and the shock absorbing roller 82 , one end of the shock absorbing spring 83 is connected to the shock absorbing bracket 81 , and the other end is connected to the inner wall of the pump body 1 .
[0039] like Figure 5 As shown, the other end of the shock-absorbing bracket 81 is connected to the inner ring of the shock-absorbing roller 82, and the outer ring of the shock-absorbing roller 82 can rotate freely.
[0040] like Figure 6 As shown, the damping roller 82 includes an inner ring 821, a rolling body 822, a support frame 823 and an outer ring 824. The inner ring 821 and the outer ring 824 are annular components. The inner wall diameter of the outer ring 824 is larger than the outer wall diameter of the inner ring 821. The inner wall of the inner ring 821 is connected to the side of the damping support 81 that is not connected to the pump body 1. The side of the damping support 81 that is not connected to the pump body 1 is provided with a square hole, and the square hole surrounds the damping roller 82. The rolling body 822 and the support frame 823 are provided between the outer wall of the inner ring 821 and the inner wall of the outer ring 824. The rolling body 822 can be a cylindrical roller or a spherical roller. The diameter of the rolling body 822 is half of the difference between the inner wall of the outer ring 824 and the outer wall of the inner ring 821. The support frame 823 is an annular component with a hole. The diameter of the support frame 823 is smaller than the inner wall diameter of the outer ring 824 and larger than the outer wall diameter of the inner ring 821. The diameter of the hole on the support frame 823 is slightly larger than the diameter of the rolling body.
[0041] The shock absorbing device 8 may be provided in multiple groups, and one group is provided inside the pump body 1 on the side of the drain port 7 facing outward along the direction of water flow rotation.
[0042] The working principle of the shock absorbing device 8: During the operation of the horizontal submersible sewage pump with Teflon coating of the utility model, the larger diameter particles in the sewage enter the gap between the pump body 1 and the impeller 2. The larger diameter particles are irregular in shape. As the water flow rotates, the particles themselves will also rotate, and their diameter in the gap will also change. When the diameter of the particles is too large, the edge of the impeller 2 and the inner wall of the pump body 1 will produce a film layer with the particles, causing vibration. After adding the shock absorbing device, when the particles with too large diameter pass through the gap between the pump body 1 and the impeller 2, the elastic structure and rolling structure of the shock absorbing device 8 will reduce the friction between the edge of the impeller 2 and the pump body 1 and the particles, thereby reducing the vibration generated by the impeller 2 during operation.
[0043] The utility model provides a horizontal submersible sewage pump with Teflon coating, wherein the inner surface of the pump body 1 and the outer surface of the impeller 2 are both provided with Teflon coating, which can effectively reduce the corrosion and wear of the pump body 1 and the impeller 2 by impurities in the sewage, and at the same time, a shock absorbing device 8 is provided, which can reduce the friction between the larger diameter particles in the sewage and the blade edge of the impeller 2 during the sewage discharge process, further reduce the wear of the impeller 2, reduce the vibration of the impeller 2 during the sewage discharge process, and extend the service life of the sewage pump.
[0044] The above content is an explanation of the preferred embodiments of the present invention, which can help those skilled in the art to more fully understand the technical solution of the present invention. However, these embodiments are merely illustrative, and it cannot be determined that the specific implementation methods of the present invention are limited to the description of these embodiments. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions and transformations can be made, which should be regarded as belonging to the protection scope of the present invention.
Claims
1. A horizontal submersible sewage pump with Teflon coating, comprising a pump body, an impeller, a transmission device and a sealed water tank, characterized in that: A water inlet is arranged at one end of the pump body away from the transmission device, and a drain outlet is arranged on the pump body, and the opening direction of the water inlet and the opening direction of the drain outlet are perpendicular to each other; The impeller is arranged inside the pump body at one end close to the water inlet and below the drain outlet; the transmission device is arranged coaxially with the impeller, and the transmission device includes a pump shaft, a bearing and a seal; the sealed water tank is fixed above the pump body and connected to the seal; The inner surface of the pump body and the outer surface of the impeller are sprayed with Teflon coating; A shock absorbing device is arranged on the inner wall of the pump body, and the shock absorbing device is arranged in a ring around the impeller; the shock absorbing device comprises a shock absorbing bracket and a shock absorbing roller.
2. A horizontal submersible sewage pump with Teflon coating as claimed in claim 1, characterized in that: The Teflon coating includes polytetrafluoroethylene coating, polyperfluoroethylene propylene coating, polychlorotrifluoroethylene coating, and polyvinylidene fluoride coating.
3. A horizontal submersible sewage pump with Teflon coating as claimed in claim 1, characterized in that: The impeller comprises a wheel hole and a plurality of blades, wherein the blades are arc-shaped plate-like components, and the plurality of blades are evenly arranged around the wheel hole and have the same arc direction; the rotation direction of the impeller is opposite to the bending direction of the blades.
4. A horizontal submersible sewage pump with Teflon coating as claimed in claim 1, characterized in that: The impeller, the pump shaft, the bearing and the seal are coaxially arranged with the pump shaft as the axis.
5. A horizontal submersible sewage pump with Teflon coating as claimed in claim 4, characterized in that: One end of the pump shaft is connected to the impeller, and the other end extends to the outside of the pump body away from the water inlet. The pump shaft is connected to the motor on one side outside the pump body.
6. A horizontal submersible sewage pump with Teflon coating as claimed in claim 1, characterized in that: One end of the shock-absorbing bracket is connected to the pump body, and the other end is connected to the shock-absorbing roller; the shock-absorbing bracket is an elastic component.
7. A horizontal submersible sewage pump with Teflon coating as claimed in claim 1, characterized in that: The sealed water tank contains cooling water, and the sealed water tank is connected to the seal via a hose, and the cooling water circulates in the seal and the sealed water tank.
8. A horizontal submersible sewage pump with Teflon coating as claimed in claim 1, characterized in that: The shock-absorbing roller comprises an inner ring, a rolling body, a support frame and an outer ring. The inner ring and the outer ring are annular components. The rolling body and the support frame are arranged between the outer wall of the inner ring and the inner wall of the outer ring.
9. A horizontal submersible sewage pump with Teflon coating as claimed in claim 8, characterized in that: The inner wall diameter of the outer ring is larger than the outer wall diameter of the inner ring; the diameter of the support frame is smaller than the inner wall diameter of the outer ring and larger than the outer wall diameter of the inner ring; the diameter of the rolling body is half of the difference between the inner wall diameter of the outer ring and the outer wall diameter of the inner ring.
10. A horizontal submersible sewage pump with Teflon coating as claimed in claim 1, characterized in that: The shock absorbing device also includes a shock absorbing spring and a limiting structure; the shock absorbing bracket is a rigid component, the shock absorbing spring is an elastic component, the limiting structure includes a limiting axis, a limiting angle and a limiting groove, the two ends of the limiting axis are fixed in the grooves on the inner wall of the pump body, the middle part is connected to one end of the shock absorbing bracket, the shock absorbing bracket rotates around the limiting axis, the shock absorbing bracket is provided with a limiting groove in the direction close to the pump body, and a limiting angle in the direction away from the pump body.