CN209925290U - Chemical pump impeller locking device - Google Patents
Chemical pump impeller locking device Download PDFInfo
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- CN209925290U CN209925290U CN201920735940.3U CN201920735940U CN209925290U CN 209925290 U CN209925290 U CN 209925290U CN 201920735940 U CN201920735940 U CN 201920735940U CN 209925290 U CN209925290 U CN 209925290U
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- impeller
- nut
- sealed pad
- locking device
- chemical pump
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Abstract
The utility model discloses a chemical pump impeller locking device, including sealed pad (1), impeller nut (2), lock nut (3), impeller nut (2) inboard cup joint sealed pad (1) and with sealed pad (1) upper portion extrusion laminating, the lower part of sealed pad (1) compresses tightly impeller subassembly (4) upper end, lock nut (3) and the sealed output that fills up (1) inboard close laminating and fastening impeller nut (2), impeller subassembly (4) and pump shaft, the head of impeller nut (2) is used for preventing the medium corrosion for the fluoroplastics layer, the top surface of sealed pad (1) is personally submitted the slope form relatively its inside and is used for producing radial extrusion impeller nut (2) inner wall and lock nut (3) outer wall. The utility model discloses make full use of quiet, dynamic friction and expend with heat and contract with cold characteristic to increase the life of pump, change the sealed thinking of tradition, solve impeller nut problem of droing, practiced thrift user's manufacturing cost greatly and improved production efficiency.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field especially relates to a chemical pump impeller locking device.
Background
The fluoroplastic chemical pump is a preferred chemical pump for conveying corrosive media, and has a more prominent effect particularly in the working conditions of conveying strong acid, strong alkali, flammable and explosive media. Because the medium of conveying is special to thereby make the flow passage part must be anticorrosive, so the impeller nut that contacts with the medium must be fluoroplastics, so when the pump starts or the moment of closing, because inertia leads to the loose and all move of impeller lock nut, if the medium temperature of conveying is too low or too high, expend with heat and contract with cold, make the sealed pad warp, aggravate the not hard up of impeller nut more, drop. Therefore, the user cannot normally produce the product, and the parts must be replaced frequently, which results in economic loss.
Patent application number is 201610369734.6's a chemical pump impeller locking device, include the pump shaft and cup joint at the epaxial impeller of pump, the axle head threaded connection of lock nut and pump shaft compresses tightly the impeller, the axle head threaded connection of secondary lock nut and pump shaft compresses tightly lock nut, lock nut compresses tightly the one end of impeller and sets up the shirt rim, there are 7 nut locating pin holes along circumference evenly distributed, 9 impeller locating pin holes of evenly distributed on the circumference that the impeller terminal surface corresponds, one of lock nut locating pin hole aligns with one of impeller locating pin hole, and it is fixed with lock nut and impeller through the locating pin. The structure of this patent is complicated, uses too much nut assembly, uses for a long time, still produces the not hard up potential safety hazard of nut assembly or leakproofness problem easily when starting scram or accelerating.
Based on this, the chemical pump impeller locking device that can solve impeller nut and drop the problem and increase fluoroplastics chemical pump's life now urgently needs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a chemical pump impeller locking device that can solve impeller nut obscission problem and increase fluoroplastics chemical pump's life is provided.
The utility model discloses a following technical scheme solves above-mentioned technical problem:
the utility model provides a chemical pump impeller locking device, includes sealed pad, impeller nut, lock nut, the inboard sealed pad of cup jointing of impeller nut and with sealed upper portion extrusion laminating, the sealed lower part that fills up compresses tightly impeller subassembly upper end, lock nut and sealed inboard closely laminating of pad and fastening impeller nut, impeller subassembly and pump shaft's output, impeller nut's head is used for preventing the medium corrosion for fluoroplastics layer, the sealed top surface of pad is personally submitted the slope form in it relatively for produce radial extrusion impeller nut inner wall and lock nut outer wall, increase the sealed frictional force between pad and impeller nut inner wall and the lock nut outer wall.
As one of the preferred modes of the utility model, still be equipped with the frictional layer on the impeller nut inner wall, the frictional force between sealed pad of further increase and the impeller nut inner wall prevents that the impeller nut from droing.
In a preferred embodiment of the present invention, the thickness of the friction layer is 0.2 to 0.5 mm.
In a preferred embodiment of the present invention, the inclination of the top surface of the gasket with respect to the inner surface thereof is 1 to 3 °.
In a preferred embodiment of the present invention, the inclination of the top surface of the gasket with respect to the inner surface thereof is 2 °.
As one of the preferable modes of the present invention, the lock nut is fastened to the impeller nut through a threaded connection and improves the friction force through the pressure seal gasket, and the fastening direction of the lock nut is opposite to the rotation direction of the impeller.
As one of the preferred modes of the utility model, the laminating position of sealed lower part and impeller subassembly upper end is equipped with first friction ring respectively and corresponds the first friction groove that matches, sealed upper portion and the inboard extrusion laminating position of impeller nut are equipped with the second friction ring respectively and correspond the second friction groove that matches.
As one of the preferred modes of the utility model, sealed the pad be in "cap form" the centre offer with impeller nut's afterbody matched with through-hole, the cap top height of sealed pad and impeller nut's inner wall degree of depth phase-match, the inboard degree of depth of the cap of sealed pad is greater than the cap edge thickness of sealed pad.
As one of the preferable modes of the present invention, the shape of the through hole is a regular hexagonal through hole, the outer hexagonal shape of the matching of the end of the impeller nut close to the head is positioned in a matching manner, and the rear end is threaded.
The utility model also discloses a chemical pump impeller locking device, including sealed pad, impeller nut, lock nut, the inboard sealed pad of cup jointing of impeller nut and with sealed upper portion extrusion laminating of filling up, sealed lower part of filling up compresses tightly impeller component upper end, lock nut closely laminates and fastens the output of impeller nut, impeller component and pump shaft with sealed inboard, the head of impeller nut is used for preventing the medium corrosion for the fluoroplastics layer, sealed top surface of filling up is relative bulge form for the center andor sealed inner face of filling up is relative bulge form for the center for produce radial extrusion impeller nut inner wall and lock nut outer wall.
The utility model discloses compare prior art's advantage and lie in: the utility model discloses make full use of quiet, dynamic friction and expend with heat and contract with cold characteristic to increase the life of pump, change the sealed thinking of tradition, solve impeller nut problem of droing, practiced thrift user's manufacturing cost greatly and improved production efficiency.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a chemical pump according to the present embodiment;
FIG. 2 is a schematic partial enlarged view of an impeller locking device of a chemical pump in the embodiment;
FIG. 3 is a schematic view showing the structure of the gasket according to the present embodiments 1 to 4;
FIG. 4 is a top view of the gasket of the present embodiments 1-4;
FIG. 5 is a schematic structural view of an impeller nut of the present embodiment;
FIG. 6 is a schematic structural view of a gasket according to example 5.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1-5, the chemical pump impeller locking device of this embodiment includes a sealing gasket (1), an impeller nut (2), and a locking nut (3), wherein the sealing gasket (1) is sleeved on the inner side of the impeller nut (2) and is extruded and attached to the upper portion of the sealing gasket (1), the lower portion of the sealing gasket (1) compresses the upper end of the impeller component (4), the locking nut (3) is closely attached to the inner side of the sealing gasket (1) and fastens the output ends of the impeller nut (2), the impeller component (4), and the pump shaft, the head of the impeller nut (2) is a fluoroplastic layer for preventing corrosion of media, the top of the sealing gasket (1) is provided with a certain oblique angle for generating radial extrusion on the inner wall of the impeller nut (2) and the outer wall of the locking nut (3), increasing the friction force between the sealing gasket and the inner wall of the impeller nut and the outer wall, can extrude impeller nut inner wall and lock nut outer wall when the fastening, strengthened the rotational friction between them greatly, when fluoroplastics chemical pump is starting, when shutting down, the impeller nut receives the not hard up possibility of inertial force to reduce dramatically, plays the fastening effect, and when the low temperature medium of carrying, sealed the pad shrink, tightly wraps up on lock nut. When high-temperature medium is conveyed, the sealing gasket expands and is tightly attached to the inner wall of the impeller nut, so that the fastening effect is achieved.
Example 2
The embodiment is basically the same as the embodiment 1, and mainly differs in that a friction layer (201) is further arranged on the inner wall of the impeller nut (2), so that the friction force between the sealing gasket and the inner wall of the impeller nut is further increased, the impeller nut is prevented from falling off, the thickness of the friction layer (201) is 0.2-0.5mm, the certain bevel angle is 1-3 degrees, and the optimal fastening effect is achieved when the certain bevel angle is 2 degrees.
Example 3
This embodiment is the same as embodiment 1 basically, and its main difference lies in, lock nut (3) pass through threaded connection fastening on impeller nut (2) and through compressing tightly sealed pad (1) and improve frictional force, the fastening direction of lock nut (3) is opposite with the rotation direction of impeller, sealed pad (1) lower part is equipped with first friction ring (101) and correspond first friction groove (401) that matches respectively with the laminating position of impeller subassembly (4) upper end, sealed pad (1) upper portion is equipped with second friction ring (102) and correspond second friction groove (202) that matches respectively with the inboard extrusion laminating position of impeller nut (2), and this embodiment improves the frictional force between lock nut and sealed pad, the impeller subassembly, prevents that it from rotating and drops.
Example 4
The sealing gasket is basically the same as the embodiment 1, and mainly has the difference that a through hole matched with the tail part of the impeller nut (2) is formed in the middle of the sealing gasket (1) in a cap shape, the height of the cap top of the sealing gasket (1) is matched with the depth of the inner wall of the impeller nut (2), the depth of the inner side of the cap of the sealing gasket (1) is larger than the thickness of the cap edge of the sealing gasket (1), the through hole is in a regular hexagon shape, one end, close to the head part, of the tail part of the impeller nut (2) is in a matched outer hexagon shape for positioning, and the rear end of the impeller nut is in; the sealing gasket shape structure of this embodiment can wrap up lock nut and can laminate impeller nut inner wall again, has strengthened the leakproofness between them greatly to regular hexagon through-hole location prevents its relative rotation, and the anti-drop effect is further strengthened.
Example 5
Referring to fig. 1-2, fig. 6: the utility model also discloses a chemical pump impeller locking device, including sealed pad (1), impeller nut (2), lock nut (3), the inboard sealed pad (1) of cup jointing of impeller nut (2) and with sealed pad (1) upper portion extrusion laminating, the lower part of sealed pad (1) compresses tightly impeller subassembly (4) upper end, lock nut (3) and sealed pad (1) inboard close laminating and fastening impeller nut (2), impeller subassembly (4) and the output of pump shaft, the head of impeller nut (2) is the fluoroplastics layer and is used for preventing the medium corrosion, the top surface of sealed pad (1) is relative bulge form with respect to the center and or the inner face of sealed pad (1) is relative bulge form with respect to the center for produce radial extrusion impeller nut (2) inner wall and lock nut (3) outer wall increase sealed pad and impeller nut inner wall and lock nut outer wall between the frictional force, the sealed top surface or the inner face of filling up of this embodiment are protruding form, can extrude impeller nut inner wall and lock nut outer wall when the fastening, have strengthened the rotation frictional force between them greatly, when fluoroplastics chemical pump start up, shut down, the impeller nut receives the not hard up possibility of inertial force to reduce dramatically, plays the fastening effect, when the low temperature medium of carrying, and the shrink of sealed pad is tightly wrapped up on lock nut. When high-temperature medium is conveyed, the sealing gasket expands and is tightly attached to the inner wall of the impeller nut, so that the fastening effect is achieved.
The utility model has the advantages of the utility model discloses a theory of operation: the utility model discloses impeller nut and sealed pad simple structure after the improvement, high durability and convenient installation, prevent that impeller nut drop effect is splendid because the sealed fill up close-fitting after the improvement is at the impeller nut inner wall after the improvement, impeller nut inner wall processing 0.2-0.5mm deep friction layer, after lock nut locking impeller, fasten impeller nut at the pump spindle (improve sealed the pad put into impeller nut in), because sealed pad has 2 inclinations or sealed top surface of filling up and or personally submit the bulge form in, fasten to last, sealed reaction force increase, frictional resistance has been strengthened greatly to impeller nut inner wall friction layer and lock nut outer wall, fastening effect improves sharply. When the fluoroplastic chemical pump is started and shut down, the possibility that the impeller nut and the locking nut are loosened by the inertial force is greatly reduced, and the fastening effect is achieved. When the low-temperature medium is conveyed, the sealing gasket is contracted and tightly wrapped on the locking nut. When high-temperature medium is conveyed, the sealing gasket expands to be tightly attached to the inner wall of the impeller nut, and the friction groove plays a fastening role.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a chemical pump impeller locking device, a serial communication port, including sealed pad (1), impeller nut (2), lock nut (3), impeller nut (2) inboard cup joint sealed pad (1) and with sealed pad (1) upper portion extrusion laminating, the lower part of sealed pad (1) compresses tightly impeller subassembly (4) upper end, lock nut (3) and the sealed output that fills up (1) inboard close laminating and fastening impeller nut (2), impeller subassembly (4) and pump shaft, the head of impeller nut (2) is used for preventing the medium corrosion for the fluoroplastics layer, the top surface of sealed pad (1) is the slope form relatively its inside for produce radial extrusion impeller nut (2) inner wall and lock nut (3) outer wall.
2. The chemical pump impeller locking device according to claim 1, characterized in that a friction layer (201) is further arranged on the inner wall of the impeller nut (2).
3. The chemical pump impeller locking device according to claim 2, characterized in that the thickness of the friction layer (201) is 0.2-0.5 mm.
4. Chemical pump impeller locking device according to claim 1, characterized in that the inclination of the top face of the gasket (1) with respect to its inner face is 1-3 °.
5. The chemical pump impeller locking device according to claim 4, characterized in that the top surface of the gasket (1) has an inclination of 2 ° with respect to its inner face.
6. The chemical pump impeller locking device according to claim 1, characterized in that the locking nut (3) is fastened to the impeller nut (2) by a threaded connection and the friction is increased by compressing the gasket (1), the fastening direction of the locking nut (3) being opposite to the rotation direction of the impeller.
7. The chemical pump impeller locking device according to claim 1, wherein a first friction ring (101) and a corresponding and matched first friction groove (401) are respectively arranged at the joint of the lower portion of the sealing gasket (1) and the upper end of the impeller assembly (4), and a second friction ring (102) and a corresponding and matched second friction groove (202) are respectively arranged at the joint of the upper portion of the sealing gasket (1) and the inner side of the impeller nut (2) in an extrusion manner.
8. The chemical pump impeller locking device as claimed in claim 1, wherein the gasket (1) is in a cap shape, a through hole matched with the tail of the impeller nut (2) is formed in the middle of the gasket, the height of the cap top of the gasket (1) is matched with the depth of the inner wall of the impeller nut (2), and the depth of the inner side of the cap of the gasket (1) is greater than the thickness of the cap edge of the gasket (1).
9. The chemical pump impeller locking device as claimed in claim 8, wherein the through hole is a regular hexagonal through hole, one end of the tail part of the impeller nut (2) close to the head part is a matched external hexagonal shape for matching and positioning, and the rear end is in a thread shape.
10. The utility model provides a chemical pump impeller locking device, a serial communication port, including sealed pad (1), impeller nut (2), lock nut (3), impeller nut (2) inboard cup joint sealed pad (1) and with sealed pad (1) upper portion extrusion laminating, the lower part of sealed pad (1) compresses tightly impeller subassembly (4) upper end, lock nut (3) and the sealed output that fills up (1) inboard close laminating and fastening impeller nut (2), impeller subassembly (4) and pump shaft, the head of impeller nut (2) is used for preventing the medium corrosion for the fluoroplastics layer, the top surface of sealed pad (1) is relative bulge form for the center and or the inner face of sealed pad (1) is relative bulge form for the center for produce radial extrusion impeller nut (2) inner wall and lock nut (3) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920735940.3U CN209925290U (en) | 2019-05-21 | 2019-05-21 | Chemical pump impeller locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920735940.3U CN209925290U (en) | 2019-05-21 | 2019-05-21 | Chemical pump impeller locking device |
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| CN209925290U true CN209925290U (en) | 2020-01-10 |
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| CN201920735940.3U Active CN209925290U (en) | 2019-05-21 | 2019-05-21 | Chemical pump impeller locking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056533A (en) * | 2019-05-21 | 2019-07-26 | 安徽卧龙泵阀股份有限公司 | A kind of impeller of chemical centrifugal pump locking device |
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2019
- 2019-05-21 CN CN201920735940.3U patent/CN209925290U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056533A (en) * | 2019-05-21 | 2019-07-26 | 安徽卧龙泵阀股份有限公司 | A kind of impeller of chemical centrifugal pump locking device |
| CN110056533B (en) * | 2019-05-21 | 2024-04-09 | 安徽卧龙泵阀股份有限公司 | Chemical pump impeller locking device |
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