Stainless steel water pump casting

Abstract

The utility model relates to the technical field of water pump accessories, and discloses a stainless steel water pump casting which comprises a machine shell. A rotating shaft; a mounting plate; a blade; the installation structure is arranged between the blades and the installation plate and used for disassembling and assembling the blades, the installation structure comprises insertion grooves and insertion connection protrusions, the multiple insertion grooves are formed in the wall face of the installation plate, the same insertion connection protrusions are fixedly arranged at the root of each blade, the insertion connection protrusions are inserted into the insertion grooves, and for later maintenance, the blades can be disassembled and assembled conveniently. The blades can be independently replaced, the maintenance cost is reduced, the blades are pushed towards the center position of the mounting plate, so that the inserting protrusions are separated from the inserting grooves and enter the notches, old blades can be detached by pulling out the blades, the inserting protrusions at the roots of new blades are inserted into the inserting grooves, and under the action of centrifugal force, the blades can be replaced independently. The blades can drive the inserting protrusions to move in the circumferential direction close to the mounting plate, then the inserting protrusions cannot be disengaged from the inserting grooves, and the characteristics of being convenient to maintain and convenient and fast to disassemble and assemble are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump accessories, in particular to a stainless steel water pump casting. Background Art

[0002] A water pump is a machine for conveying liquid or pressurizing liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. The casing 10 and the impeller of the water pump are usually produced by casting.

[0003] The prior art discloses a stainless steel casting for a pressure-resistant water pump (publication number: CN218118059U), including a casing 10, wherein the casing 10 includes an epoxy powder coating, a semi-austenitic precipitation hardened stainless steel layer and a polytetrafluoroethylene coating, a drive motor is fixedly installed on the left side of the outer surface of the casing 10, and an impeller is fixedly installed at the output end of the drive motor and located in the inner cavity of the casing 10, and the impeller includes a high-molecular ceramic polymer coating, a silicon carbide ceramic coating and a martensitic precipitation hardened stainless steel layer.

[0004] The impeller in the prior art is integrally formed, and the impeller includes a circular plate and multiple sheet structures. In actual use, especially for specially treated impellers, the substrate itself is made of a special material, and the outside of the substrate is also coated, which makes the overall cost of the impeller high. The one-piece molding method requires replacement of a single blade after it is damaged, which results in high maintenance costs for later maintenance.

[0005] To this end, we propose a stainless steel water pump casting. Utility Model Content

[0006] The utility model mainly solves the technical problem that a single blade of the impeller is damaged and needs to be replaced as a whole, and provides a stainless steel water pump casting.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme, a stainless steel water pump casting, comprising:

[0008] A casing having a shell structure with a cavity;

[0009] A rotating shaft, disposed in the housing cavity and rotatably connected to the housing;

[0010] A mounting plate, a circular plate structure fixedly connected to the rotating shaft for mounting;

[0011] The blade is arranged on one side of the mounting plate and is located in the casing cavity for squeezing and pushing the material;

[0012] The mounting structure is arranged between the blade and the mounting plate for disassembling and assembling the blade. The mounting structure includes a slot and a plug-in protrusion. The wall surface of the mounting plate is provided with a plurality of slots. The root of each blade is fixedly provided with the same plug-in protrusion, and the plug-in protrusion is inserted into the slot.

[0013] As a preferred embodiment of the present invention, the mounting structure further comprises a gasket and a retaining spring, the gasket is plugged into the rotating shaft, the retaining spring is clamped into the rotating shaft and is pressed and limited with the gasket.

[0014] As a preferred embodiment of the present invention, a circular hole for fitting a gasket is provided at the center of the end of the mounting plate. The gasket is annular and has a thickness equal to a depth of the circular hole.

[0015] As a preferred embodiment of the utility model, an annular groove is formed on the circumferential surface of the rotating shaft, and the retaining ring is clamped in the annular groove.

[0016] As a preferred embodiment of the utility model, the plug-in protrusion forms a block structure with a convex cross-section, the plug-in protrusion and the slot cooperate with each other, and the top of the plug-in protrusion is fixedly connected to the root of the blade.

[0017] As a preferred embodiment of the present invention, a plurality of notches are provided at the end of the mounting plate, the notches are connected to the round hole and the slot, and the length of the notches is greater than the length of the plug-in protrusion.

[0018] As a preferred embodiment of the utility model, the rotating shaft passes through the casing and extends into the casing cavity, a bearing is installed on the back of the casing, the rotating shaft passes through the inner ring of the bearing, a spline groove is provided on the part of the rotating shaft located outside the casing, a feed port is provided at the front end of the casing, and a feed assembly is fixed at the feed port.

[0019] Beneficial Effects

[0020] The utility model provides a stainless steel water pump casting, which has the following beneficial effects:

[0021] 1. This stainless steel water pump casting is provided with a plurality of detachable blades. For later maintenance, the blades can be replaced individually to reduce maintenance costs. The blades are pushed toward the center of the mounting plate so that the plug-in protrusions are disengaged from the slots and enter the notches. The old blades can be removed by pulling out the blades. The plug-in protrusions at the roots of the new blades are inserted into the slots. Under the action of centrifugal force, the blades drive the plug-in protrusions to move in a circular direction close to the mounting plate, and the plug-in protrusions will not be disengaged from the slots. The invention is easy to maintain and easy to disassemble and assemble.

[0022] 2. This stainless steel water pump casting is provided with a gasket. When removing the old blades, first use the circlip pliers to remove the circlip from the wall of the rotating shaft, pull out the gasket, push the plug-in protrusion into the notch and remove it, and then reinstall the new blades. Connect the gasket with the rotating shaft and insert the circlip into the annular groove. The end of the gasket blocks and seals the notch, which can reduce the probability of the plug-in protrusion sliding from the slot into the notch, and the blades are not easy to fall off when the machine is stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the overall three-dimensional diagrams of the utility model;

[0024] Figure 2 This is the second overall stereogram of the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the casing of the utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the blade and the mounting plate of the utility model;

[0027] Figure 5 This is an assembly diagram of the plug-in protrusion and the mounting plate of the utility model.

[0028] Legend: 10, housing; 11, shaft; 12, mounting plate; 13, blades; 20, slots; 21, plug-in protrusions; 22, gaskets. DETAILED DESCRIPTION

[0029] A stainless steel water pump casting, such as Figure 1 and Figure 2 As shown, including:

[0030] The housing 10 has a hollow shell structure;

[0031] A rotating shaft 11 is disposed in the housing 10 and is rotatably connected to the housing 10;

[0032] The mounting plate 12 is a circular plate structure fixedly connected to the rotating shaft 11 for mounting;

[0033] The blade 13 is arranged on one side of the mounting plate 12 and is located in the cavity of the housing 10 for squeezing and pushing the material;

[0034] like Figure 3 , Figure 4 and Figure 5As shown, the mounting structure is arranged between the blade 13 and the mounting plate 12 for disassembling and assembling the blade 13. The mounting structure includes a slot 20 and a plug-in protrusion 21. The wall surface of the mounting plate 12 is provided with a plurality of slots 20. The root of each blade 13 is fixedly provided with the same plug-in protrusion 21. The plug-in protrusion 21 is inserted into the slot 20. The plug-in protrusion 21 forms a block structure with a convex cross-section. The plug-in protrusion 21 and the slot 20 cooperate with each other. The top of the plug-in protrusion 21 is fixedly connected to the root of the blade 13. A plurality of notches are arranged at the end of the mounting plate 12. The notches connect the circular hole and the slot 20. The length of the notch is greater than the length of the plug-in protrusion 21. Specifically, the blade 13 can be processed in a manner of integrally forming with the plug-in protrusion 21. The blade 13 forms a twisted metal sheet structure. By installing a plurality of blades 13 on one side of the mounting plate 12, the rotating shaft 11 is used to drive the mounting plate 12 to rotate. The blades 13 are driven to rotate and the materials are discharged from the discharge port on the side wall of the casing 10. It should be noted that a mounting hole is provided on the back of the casing 10, and the casing 10 is connected to the motor by bolts. The motor output shaft is fixedly installed with the rotating shaft 11, and the motor is used to drive the rotating shaft 11 to rotate to realize material discharge. As for the multiple detachable blades 13, for later maintenance, the blades 13 can be replaced individually to reduce the maintenance cost. The blades 13 are pushed toward the center of the mounting plate 12 so that the plug-in protrusions 21 are disengaged from the slots 20 and enter the notches. The old blades 13 can be removed by pulling out the blades 13, and the plug-in protrusions 21 at the root of the new blades 13 are inserted into the slots 20. Under the action of centrifugal force, the blades 13 will drive the plug-in protrusions 21 to move in a circular direction close to the mounting plate 12, and the plug-in protrusions 21 will not be disengaged from the slots 20. It has the characteristics of easy maintenance and convenient disassembly and assembly.

[0035] like Figure 3 and Figure 4 As shown, the mounting structure also includes a gasket 22 and a retaining spring. The gasket 22 is plugged into the rotating shaft 11, and the retaining spring is clamped into the rotating shaft 11 and pressed and limited with the gasket 22. A circular hole adapted to the gasket 22 is opened at the center position of the end of the mounting plate 12. The gasket 22 is annular, and the thickness of the gasket 22 is equal to the depth of the circular hole. The circumferential surface of the rotating shaft 11 is opened with an annular groove, and the retaining spring is clamped into the annular groove. By setting the gasket 22, when removing the old blade 13, first use the retaining spring pliers to remove the retaining spring from the wall of the rotating shaft 11, pull out the gasket 22, push the plug-in protrusion 21 into the notch and remove it for removal. After reinstalling the new blade 13, the gasket 22 is plugged into the rotating shaft 11, and the retaining spring is clamped into the annular groove. The end of the gasket 22 blocks and seals the notch, which can reduce the probability of the plug-in protrusion 21 sliding from the slot 20 into the notch, and the blade 13 is not easy to fall off when it is stopped.

[0036] Not shown in the figure, the shaft 11 passes through the casing 10 and extends into the cavity of the casing 10. A bearing is installed on the back of the casing 10, and the shaft 11 passes through the inner ring of the bearing. A spline groove is provided on the part of the shaft 11 outside the casing 10. A feed port is provided at the front end of the casing 10, and a feed assembly is fixed at the feed port. The stability of the rotation of the shaft 11 is ensured by the bearing. The feed assembly includes a trumpet-shaped cover body, which can be locked with the casing 10 by bolts. A detachable end cover is provided on the front wall of the casing 10, and the end cover is locked with the casing 10 by bolts to form a sealed chamber, which is convenient for disassembly and maintenance of components in the cavity of the casing 10.

[0037] The working principle of the utility model is as follows: the retaining ring is removed from the wall of the rotating shaft 11 by means of retaining ring pliers, and the blade 13 is pushed toward the center of the mounting plate 12, so that the plug-in protrusion 21 is disengaged from the slot 20 and enters the notch, and the old blade 13 can be removed by pulling out the blade 13, and the plug-in protrusion 21 at the root of the new blade 13 is inserted into the slot 20, and the gasket 22 is plugged into the rotating shaft 11, and the retaining ring is inserted into the annular groove, and the end of the gasket 22 blocks and seals the notch, which can reduce the probability of the plug-in protrusion 21 sliding from the slot 20 into the notch, and under the action of centrifugal force, the blade 13 will drive the plug-in protrusion 21 to move in the circumferential direction close to the mounting plate 12, and then the plug-in protrusion 21 will not be disengaged from the slot 20;

[0038] The casing 10 includes an epoxy powder coating, a semi-austenitic precipitation hardened stainless steel layer and a polytetrafluoroethylene coating. The inner surface of the epoxy powder coating is coated on the outer surface of the semi-austenitic precipitation hardened stainless steel layer, and the outer surface of the polytetrafluoroethylene coating is coated on the inner surface of the semi-austenitic precipitation hardened stainless steel layer to achieve an anti-corrosion function. The blades 13 can also be made of the same multi-layer structure as mentioned above to meet special transportation requirements.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A stainless steel water pump casting, characterized in that: include: A casing (10) having a hollow shell structure; A rotating shaft (11) is disposed in the cavity of the housing (10) and is rotatably connected to the housing (10); A mounting plate (12), a circular plate structure fixedly connected to the rotating shaft (11) for mounting; A blade (13) is arranged on one side of the mounting plate (12) and is located in the cavity of the housing (10) for squeezing and pushing materials; The mounting structure is arranged between the blade (13) and the mounting plate (12) for disassembling and assembling the blade (13), the mounting structure comprising a slot (20) and a plug-in protrusion (21), a wall surface of the mounting plate (12) is provided with a plurality of slots (20), the root of each blade (13) is fixedly provided with the same plug-in protrusion (21), and the plug-in protrusion (21) is inserted into the slot (20).

2. The stainless steel water pump casting according to claim 1, characterized in that: The mounting structure further comprises a gasket (22) and a retaining spring, wherein the gasket (22) is plugged into the rotating shaft (11), and the retaining spring is clamped into the rotating shaft (11) and is pressed and limited with the gasket (22).

3. The stainless steel water pump casting according to claim 2, characterized in that: A circular hole for fitting a gasket (22) is provided at the center of the end of the mounting plate (12); the gasket (22) is annular in shape, and the thickness of the gasket (22) is equal to the depth of the circular hole.

4. The stainless steel water pump casting according to claim 2, characterized in that: An annular groove is formed on the circumferential surface of the rotating shaft (11), and the clamping ring is clamped into the annular groove.

5. The stainless steel water pump casting according to claim 1, characterized in that: The plug-in protrusion (21) forms a block structure with a convex cross-section. The plug-in protrusion (21) and the slot (20) cooperate with each other for use. The top of the plug-in protrusion (21) is fixedly connected to the root of the blade (13).

6. The stainless steel water pump casting according to claim 1, characterized in that: A plurality of notches are provided at the end of the mounting plate (12), the notches communicating with the circular hole and the slot (20), and the length of the notches being greater than the length of the plug-in protrusion (21).

7. The stainless steel water pump casting according to claim 1, characterized in that: The rotating shaft (11) passes through the casing (10) and extends into the cavity of the casing (10); a bearing is installed on the back of the casing (10); the rotating shaft (11) passes through the inner ring of the bearing; a spline groove is provided on the portion of the rotating shaft (11) located outside the casing (10); a feed port is provided at the front end of the casing (10); and a feed assembly is fixedly provided at the feed port.

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