Stabilizing mechanism for middle-open type water pump

Abstract

The invention relates to the technical field of water pump operation, in particular to a stabilizing mechanism for a middle-open type water pump. The hub comprises a hub body and a front water guide cone which are connected, the front water guide cone comprises a cone shell and a cone cover closed on one side of the tip end of the cone shell, a central through hole is formed in the center of a side plate on one side of the tip end of the cone shell, a groove is formed in the outer edge of the side plate in the circumferential direction, and a boss matched with the groove is arranged on the outer edge of the inner side wall of the cone cover in the circumferential direction. The polyurethane foam is filled in the cavity of the hub body and the cavity of the front water guide cone, water is effectively prevented from invading the space in the cavity, the situation of water seepage is fundamentally eradicated, meanwhile, media in the cavity can support the inner wall of the hub body and the inner wall of the front water guide cone, and the problems existing in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pump operation, and particularly relates to a stabilizing mechanism for a split-case water pump. BACKGROUND

[0002] Large water pumps are widely used in various fields of national economy and people's livelihood, such as large-scale inter-basin water transfer projects, urban flood control and drainage, urban water supply, sewage treatment, and agricultural irrigation, etc. The most commonly used one is the vane pump. The horizontally installed split-case water pump has the advantages of convenient installation and maintenance, large flow, low lift, small vertical height of water conservancy structures, and simple structure, and is used more and more.

[0003] The flow passage components of the horizontal split-case water pump mainly include fixed components such as the water inlet pipeline, the water outlet pipeline, the impeller chamber, the guide vane body, and the water outlet pipe device, and rotating components composed of the pump shaft and the impeller component. Among them, the impeller component is the most important working component of the water pump, and cooperates with the impeller chamber to form the "heart" of the water pump. The impeller component is composed of a hub body and a plurality of blades and a front guide cone. The starting power source (motor) drives the impeller to rotate, and the blades drive the water to rotate. When the water rotates, it relies on inertia to flow to the outer edge of the blade. The vane pump transmits the mechanical energy of the power source to the water body by the action of the impeller component on the water body.

[0004] Due to the importance and role of the impeller component and the impeller chamber, they also become the key to the efficient, stable, and reliable operation of the vane pump. If the center of gravity of the impeller component is unbalanced, it will cause the impeller component to be eccentric and unstable, and produce severe vibration. Therefore, after the vane pump is processed in the factory, it must be subjected to impeller static balance test. By assembling counterweight on the hub body, the errors in the processing of the component can be eliminated. The circumferential weight deviation is usually controlled at about 10g. Since the hub body and the front guide cone are both hollow bodies, whether to fill oil in the hollow bodies depends on the use environment. Therefore, the sealing process needs to be done well to ensure that the hollow bodies of the hub body and the front guide cone do not leak. However, due to the complex sealing structure, the difficulty of sealing, and the existence of a large water pressure because the impeller component is submerged in water several to ten meters under water, a local point seal failure will cause oil and gas to leak, and water will enter the hollow body. At this time, the impeller component has oil-water, oil-gas-water, and water-gas states in the inner cavity. When the impeller component rotates, the oil or water that is not completely filled in the inner cavity will be thrown to the inner wall of the hub body and the front guide cone due to the centrifugal force. However, the oil-water-oil is not uniformly distributed, which causes the center of gravity of the impeller component to be unbalanced. For the unloaded speed regulating unit, the problem is more serious at the low speed running stage. At the same time, the non-oil-filled impeller component also increases the weight due to the water inlet, which increases the torque of the impeller rotation and increases the energy consumption.

[0005] In addition, the rotating part composed of the pump shaft and the impeller part is an elongated shaft, and the rotating part is a cantilever structure, so that the instability of the rotating part will occur when the rotating part is slightly unbalanced, vibration and noise will occur, and the pump bearing will be impacted to aggravate the wear. The friction and collision between the blade and the impeller chamber will further damage the blade and the impeller chamber, and further aggravate the imbalance of the water pump. Long-term high-frequency vibration will also cause fatigue failure and fracture of the pump shaft, and serious accidents will occur. The mechanical seal leakage of several hundred kilograms of the oil-filled impeller part will cause water pollution. SUMMARY

[0006] In order to make up for the shortcomings of the prior art, the application provides a stabilizing mechanism for a split-case water pump, which has a reasonable structure design and is convenient to operate. The polyurethane foam is filled in the hub body and the front guide cone cavity body, which effectively blocks the space where water enters the cavity body, fundamentally eliminates the occurrence of water seepage, and the medium in the cavity body not only supports the inner wall of the hub body and the front guide cone, but also prevents the centrifugal force generated by the fluid filled in the cavity body under high-speed rotation from impacting the sealing mechanism, so that even if leakage occurs, it will not enter the cavity body, the sealing performance of the sealing structure is reduced, the rotation of the impeller part is always balanced, vibration noise, aggravation of wear, failure and fracture accidents are avoided, the service life of the blade pump is prolonged, no additional energy is consumed, no pollution is caused to the water area, and the problems existing in the prior art are solved.

[0007] The technical scheme adopted by the application to solve the above technical problems is:

[0008] A stabilizing mechanism for a split-case water pump, comprising a hub body and a front guide cone connected, the front guide cone comprising a cone shell and a cone cover closed on one side of the tip of the cone shell, a central through hole being arranged in the center of the side plate on one side of the tip of the cone shell, a groove being arranged on the outer edge of the side plate along the circumferential direction thereof, a boss being arranged on the inner side wall of the cone cover along the circumferential direction thereof and matched with the groove, the cone cover being threadedly connected on one side of the tip of the cone shell, a plurality of cutouts being uniformly arranged on the outer edge of the boss along the circumferential direction thereof, a cooling mechanism being arranged in the hub body, and a counterweight mechanism being arranged on the outer side wall of the hub body close to the front guide cone.

[0009] Optionally, the cooling mechanism comprises a cooling cylinder arranged horizontally in the center of the hub body, the outer end of the cooling cylinder is fixedly clamped on the shaft hole of the hub body through a clamping plate, a liquid adding hole is arranged in the middle of the inner end of the cooling cylinder, and a sealing plug is clamped on the liquid adding hole of the cooling cylinder.

[0010] Optionally, a supporting mechanism matched with the cooling cylinder is arranged on the inner wall of the hub body, the supporting mechanism comprises a supporting sleeve movably clamped on the outer wall of the cooling cylinder, the outer end of the supporting sleeve abuts against the inner wall on one side of the axial hole of the hub body, a plurality of supporting plates connected with the inner wall of the hub body are uniformly and spacedly arranged on the outer wall of the supporting sleeve along the circumferential direction of the supporting sleeve, and each supporting plate separates the hub body into a plurality of separate cavities.

[0011] Optionally, a plurality of obliquely arranged side perforations are arranged on the side plate outside the central perforation along the circumferential direction of the side plate, and each side perforation is opposite to the position of the corresponding side cavity.

[0012] Optionally, the counterweight mechanism comprises a counterweight cavity arranged in the side wall of the hub body, a positioning groove communicated with the middle part of the counterweight cavity is arranged on the outer side wall of the hub body, a counterweight clamping groove communicated with the counterweight cavity is arranged on the outer side wall of the hub body, a counterweight block passes through the counterweight clamping groove and is movably clamped in the counterweight cavity, a counterweight nail is arranged on the counterweight block, and the counterweight nail passes through the positioning groove to fix the counterweight block to the inner wall of the counterweight cavity.

[0013] Optionally, a blocking groove is symmetrically arranged on the left and right side walls of the hub body, the blocking groove is arranged along the circumferential direction of the hub body, one end of an elastic blocking strip is inserted into the two blocking grooves on the lower side from the counterweight clamping groove, the elastic blocking strip passes out of the two blocking grooves on the upper side after circumferential winding, and a tab is arranged at the tail end of the elastic blocking strip.

[0014] Optionally, a tab hole is arranged on the elastic blocking strip close to the tab.

[0015] Optionally, a plurality of reinforcing ribs are uniformly and spacedly arranged on the inner wall of the conical shell along the circumferential direction of the conical shell.

[0016] Optionally, the hub body is clamped with the front water guide cone, a plurality of locking grooves are uniformly and spacedly arranged on the outer wall of the conical shell along the circumferential direction of the conical shell, a locking bolt is arranged in each locking groove, and the locking bolt passes through the end part of the conical shell and is connected with the hub body.

[0017] Optionally, anti-vibration grooves are uniformly and spacedly arranged on the convex platform of the conical cover along the circumferential direction of the convex platform.

[0018] The advantages of this invention, which adopts the above-mentioned technical solution, are: reasonable structural design and convenient operation. By filling the hub body and the cavity of the guide cone with polyurethane foam, the space for water to enter the cavity is effectively blocked, fundamentally eliminating the possibility of water leakage. At the same time, the medium in the cavity not only supports the inner wall of the hub body and the guide cone, but also prevents the centrifugal force generated by the fluid in the cavity under high-speed rotation, further eliminating the impact on the sealing mechanism. Even if leakage occurs, it will not enter the cavity, reducing the sealing performance of the sealing structure, keeping the rotation of the impeller components balanced, avoiding subsequent vibration noise, accelerated wear, failure and breakage, etc., extending the service life of the vane pump, without additional energy consumption, and without causing pollution to the water. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the conical shell;

[0021] Figure 3 for Figure 2 A schematic diagram of the side view structure;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the cone cap;

[0023] Figure 5 A three-dimensional structural diagram of the wheel hub;

[0024] Figure 6 for Figure 5 Enlarged structural diagram of section A in the middle;

[0025] Figure 7 for Figure 5 A schematic diagram of the side view structure;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the elastic retaining strip;

[0027] In the diagram, 1. Hub body; 2. Front guide cone; 201. Cone shell; 202. Cone cover; 3. Side plate; 4. Center perforation; 5. Groove; 6. Boss; 7. Cutout; 8. Cooling cylinder; 9. Clamping plate; 10. Shaft hole; 11. Fluid filling hole; 12. Sealing plug; 13. Support sleeve; 14. Support plate; 15. Partition cavity; 16. Side perforation; 17. Counterweight cavity; 18. Positioning groove; 19. Counterweight slot; 20. Counterweight block; 21. Counterweight pin; 22. Stop groove; 23. Elastic stop bar; 24. Paddle; 25. Paddle hole; 26. Reinforcing rib; 27. Locking groove; 28. Locking bolt; 29. ​​Anti-vibration groove. Detailed Implementation

[0028] In order to clearly illustrate the technical solutions of the present application, the following will give a detailed description of the present application with reference to the drawings. In the following description, numerous specific details will be set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without these specific details. In other instances, well-known methods have not been described in detail in order to avoid obscuring the present application.

[0029] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] As Figures 1-8As shown in the embodiment, the stabilizing mechanism for the middle-open water pump comprises a hub body 1 and a front guide cone 2 connected together, the front guide cone 2 comprises a cone shell 201 and a cone cover 202 closed on the side of the tip of the cone shell 201, a central through hole 4 is arranged in the center of the side plate 3 on the side of the tip of the cone shell 201, a groove 5 is arranged on the outer edge of the side plate 3 along the circumferential direction, a boss 6 matched with the groove 5 is arranged on the outer edge of the inner side wall of the cone cover 202 along the circumferential direction, the cone cover 202 is threadedly connected on the side of the tip of the cone shell 201, a plurality of cutouts 7 are uniformly arranged on the outer edge of the boss 6 along the circumferential direction, a cooling mechanism is arranged in the hub body 1, and a counterweight mechanism is arranged on the outer side wall of the hub body 1 close to the front guide cone 2.

[0032] Optionally, the cooling mechanism comprises a cooling cylinder 8 horizontally arranged in the center of the hub body 1, the outer end of the cooling cylinder 8 is fixedly clamped on the shaft hole 10 of the hub body 1 through a clamping plate 9, a liquid adding hole 11 is arranged in the middle of the inner end of the cooling cylinder 8, and a sealing plug 12 is clamped on the liquid adding hole 11 of the cooling cylinder 8.

[0033] Optionally, a supporting mechanism matched with the cooling cylinder 8 is arranged on the inner wall of the hub body 1, the supporting mechanism comprises a support sleeve 13 movably clamped on the outer wall of the cooling cylinder 8, the outer end of the support sleeve 13 abuts against the inner wall on one side of the shaft hole 10 of the hub body 1, a plurality of support plates 14 connected with the inner wall of the hub body 1 are uniformly arranged on the outer wall of the support sleeve 13 along the circumferential direction, and each support plate 14 divides the hub body 1 into a plurality of separate cavities 15. The support sleeve 13 is fixed in the hub body 1 through each support plate 14, that is, the support of the cooling cylinder 8 is improved, and the structural strength of the hub body 1 is also increased.

[0034] Optionally, a plurality of obliquely arranged side through holes 16 are arranged on the side plate 3 outside the central through hole 4 along the circumferential direction, and each side through hole 16 respectively faces the position of the corresponding side cavity 15. Since the side through holes 16 are obliquely arranged and point to the corresponding cavities 15, through each side through hole 16, it is convenient for the construction personnel to inject polyurethane foaming agent into each cavity 15 to ensure uniform injection in each cavity 15.

[0035] Optionally, the counterweight mechanism comprises a counterweight cavity 17 annularly arranged in the side wall of the hub body 1, a positioning groove 18 annularly arranged in the outer side wall of the hub body 1 and connected with the middle part of the counterweight cavity 17, a counterweight clamping groove 19 arranged on the outer side wall of the hub body 1 and connected with the counterweight cavity 17, a counterweight block 20 passing through the counterweight clamping groove 19 and movably clamped in the counterweight cavity 17, and a counterweight nail 21 arranged on the counterweight block 20, the counterweight nail 21 passing through the positioning groove 18 fixes the counterweight block 20 to the inner wall of the counterweight cavity 17.

[0036] Optionally, the wheel hub 1 side wall on both sides of the positioning slot 18 is respectively provided with a blocking slot 22, the blocking slot 22 is arranged along the circumferential direction of the wheel hub 1, one end of an elastic blocking strip 23 is inserted into the lower two blocking slots 22 from the counterweight clamping slot 19, and the elastic blocking strip 23 is pulled out from the upper two blocking slots 22 after being wound around, and a push piece 24 is arranged at the tail end of the elastic blocking strip 23. The elastic blocking strip 23 is inserted into the two blocking slots 22, which can reduce water resistance and reduce the impact of water on the counterweight nail 21, so that the counterweight block 20 can be fixed for a long time.

[0037] Optionally, the elastic blocking strip 23 on the side close to the push piece 24 is provided with a push hole 25. When the elastic blocking strip 23 needs to be taken out, a tool can be inserted into the push hole 25 to pull out the end of the elastic blocking strip 23 from the counterweight clamping slot 19.

[0038] Optionally, a plurality of reinforcing ribs 26 are uniformly arranged on the inner wall of the conical shell 201 along the circumferential direction. The reinforcing ribs 26 can improve the structural strength of the conical shell 201.

[0039] Optionally, the wheel hub 1 is connected with the front guide water cone 2, a plurality of locking grooves 27 are uniformly arranged on the outer wall of the conical shell 201 along the circumferential direction, and a locking bolt 28 is arranged in each locking groove 27. The locking bolt 28 is connected with the wheel hub 1 through the end of the conical shell 201.

[0040] Optionally, the boss 6 of the conical cover 202 is provided with a vibration-preventing groove 29 uniformly arranged along the circumferential direction. Waterproof sealant can be applied to the position of the boss 6 of the conical cover 202, and the vibration-preventing groove 29 can increase the contact area with the waterproof sealant, thereby fixing the position of the conical cover 202. The vibration-preventing groove 29 is opposite to the direction of rotation of the water wheel, thereby further improving the resistance of the conical cover 202.

[0041] Before using the device, the cooling cylinder 8 needs to be injected with cooling liquid, and after being filled, the liquid hole 11 is blocked with the sealing plug 12, then the cooling cylinder 8 is clamped into the hub body 1, and the position of the cooling cylinder 8 and the hub body 1 is fixed with the clamping plate 9. Then the polyurethane foaming device is used, and the nozzle of the polyurethane foaming device is sequentially inserted through the side perforations 16 to complete the spraying into each cavity 15. After solidification, the space in the hub body 1 is filled with polyurethane material. Then, the front water cone 2 is sprayed from the center perforation, so that the cone shell 201 is filled and solidified, and the excess is squeezed out along the other liquid holes 11. After removing this part, the cone cover 202 is sealed, and the tool is clamped to the position of the cutout 7 to complete the final locking of the cone cover 202. After the balance test, the counterweight block 20 is clamped into the corresponding counterweight clamping groove 19, and the position is moved to the corresponding position, and the position of the counterweight block 20 is fixed with the locking pin 21. If multiple counterweight blocks 20 are needed, they can be operated according to the above scheme. Because the polyurethane material is not heat-resistant, heat is generated when the blade rotates, and the heat is further transmitted to the hub body 1. Although the water is cooled, the heat in the hub body 1 is not easy to diffuse when it rotates at high speed, and the cooling liquid in the cooling cylinder 8 can cool the hub body 1 and the front water cone 2 in time, so that the polyurethane material is always solidified, and the sealing property is ensured. It has reasonable structure design and convenient operation. By filling polyurethane foam in the hub body and the front water cone cavity, the water intrusion into the space in the cavity is effectively blocked, and the water seepage is fundamentally eliminated. At the same time, the medium in the cavity not only supports the inner wall of the hub body and the front water cone, but also prevents the centrifugal force generated by the fluid filled in the cavity under high-speed rotation from further impacting the sealing mechanism. Even if leakage occurs, it will not enter the cavity, which reduces the sealing performance of the sealing structure, keeps the rotation of the impeller part balanced, avoids subsequent vibration noise, aggravates wear, failure and fracture accidents, prolongs the service life of the blade pump, does not consume additional energy, does not pollute the water area, and solves the problems in the prior art.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. Any alternative improvement or change made by those skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0043] The details of the present application not described are known to those skilled in the art.

Claims

1. A stabilizing mechanism for a split case water pump, characterized by, The front water cone includes a cone shell and a cone cover closed on one side of the cone shell tip, a central through hole is arranged in the center of the side plate on one side of the cone shell tip, a groove is arranged on the outer edge of the side plate along the circumferential direction, a boss matched with the groove is arranged on the inner side wall of the cone cover, the cone cover is screwed on one side of the tip of the cone shell, a plurality of cutouts are uniformly arranged on the outer edge of the boss along the circumferential direction, a cooling mechanism is arranged in the hub body, and a counterweight mechanism is arranged on the outer side wall of the hub body close to the front water cone.

2. A stabilizing mechanism for a split case water pump according to claim 1, wherein The cooling mechanism includes a cooling cylinder arranged horizontally in the center of the hub body, the outer end of the cooling cylinder is fixedly clamped on the shaft hole of the hub body through a clamping plate, and a liquid adding hole is arranged in the middle of the inner end of the cooling cylinder.

3. A stabilizing mechanism for a split case water pump according to claim 2, wherein A supporting mechanism matched with the cooling cylinder is arranged on the inner wall of the hub body, the supporting mechanism includes a supporting sleeve movably clamped on the outer wall of the cooling cylinder, the outer end of the supporting sleeve abuts against the inner wall on one side of the shaft hole of the hub body, a plurality of supporting plates connected with the inner wall of the hub body are uniformly and interval arranged on the outer wall of the supporting sleeve along the circumferential direction, and each supporting plate divides the hub body into a plurality of separate cavities.

4. A stabilizing mechanism for a split case water pump according to claim 3, wherein A plurality of obliquely arranged side through holes are arranged on the side plate outside the central through hole along the circumferential direction, and each side through hole is opposite to the position of the corresponding side cavity.

5. A stabilizing mechanism for a split case water pump as set forth in claim 1, wherein The counterweight mechanism includes a counterweight cavity arranged in the side wall of the hub body, a positioning groove communicated with the middle part of the counterweight cavity is arranged on the outer side wall of the hub body, a counterweight clamping groove communicated with the counterweight cavity is arranged on the outer side wall of the hub body, a counterweight block passes through the counterweight clamping groove and is movably clamped in the counterweight cavity, a counterweight nail is arranged on the counterweight block, and the counterweight nail passes through the positioning groove to fix the counterweight block to the inner wall of the counterweight cavity.

6. A stabilizing mechanism for a split case water pump according to claim 5, wherein A blocking groove is symmetrically arranged on the left and right side walls of the hub body, the blocking groove is arranged along the circumferential direction of the hub body, one end of an elastic blocking strip is inserted into the two blocking grooves on the lower side from the counterweight clamping groove, the elastic blocking strip is pulled out from the two blocking grooves on the upper side after being wound around, and a pushing piece is arranged at the tail end of the elastic blocking strip.

7. A stabilizing mechanism for a split case water pump as set forth in claim 6, wherein A pushing hole is arranged on the elastic blocking strip close to the pushing piece.

8. A stabilizing mechanism for a split case water pump as set forth in claim 1, wherein A plurality of reinforcing ribs are uniformly and interval arranged on the inner wall of the cone shell along the circumferential direction.

9. A stabilizing mechanism for a split case water pump as set forth in claim 1, wherein The hub body is clamped with the front water cone, a plurality of locking grooves are uniformly and interval arranged on the outer wall of the cone shell along the circumferential direction, a locking bolt is arranged in each locking groove, and the locking bolt passes through the end part of the cone shell and is connected with the hub body.

10. A stabilizing mechanism for a split case water pump as set forth in claim 1, wherein Anti-vibration grooves are uniformly and interval arranged on the boss of the cone cover along the circumferential direction.

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