CN214742313U - Packing sealing device of single-stage single-suction centrifugal pump - Google Patents
Packing sealing device of single-stage single-suction centrifugal pump Download PDFInfo
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- CN214742313U CN214742313U CN202120273842.XU CN202120273842U CN214742313U CN 214742313 U CN214742313 U CN 214742313U CN 202120273842 U CN202120273842 U CN 202120273842U CN 214742313 U CN214742313 U CN 214742313U
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Abstract
The utility model provides a packing sealing device of single-stage single suction centrifugal pump belongs to water pump equipment technical field. The packing sealing device of the single-stage and single-suction centrifugal pump comprises a pump body mechanism and a sealing mechanism. The pump body mechanism comprises a pump shell, a pump shaft, a first sealing ring and a first supporting plate, wherein the pump shaft is arranged in the middle of the pump shell, the first sealing ring is connected to the inner wall of the pump shell, and the number of the first sealing rings is two. The utility model discloses a filler body, pump shaft, first spring, extension board, tray, kicking block, closing plate, the effect of first sealing washer and second sealing washer to reached the automatic mesh that compresses tightly of being convenient for, received wearing and tearing and extrusion under the long-term contact stress of pivot when packing, when losing certain elasticity, through the automatic extrusion filler of compact structure, make to pack and hug closely at the pivot surface, improve the sealed effect of centrifugal pump, reduce and let out leakage quantity, save the resource, also can improve the life of centrifugal pump simultaneously.
Description
Technical Field
The utility model relates to a water pump equipment field particularly, relates to a packing sealing device of single-stage single suction centrifugal pump.
Background
The centrifugal pump utilizes the rotation of an impeller to enable water to generate centrifugal motion to work, in the fields of power plants and chemical industry, the centrifugal pump is required to have little leakage amount or basically no leakage object is allowed to leak, the sealing requirement on a pump shaft is very high, the packing sealing device of the existing single-stage single-suction centrifugal pump is not convenient to automatically compress, the packing can be worn and extruded under the long-term contact stress of the rotating shaft under the action of long-term continuous operation of the rotating shaft, certain elasticity is further lost, the sealing effect is greatly reduced, the leakage amount is increased, resource waste is caused, and the centrifugal pump is easy to damage.
Accordingly, those skilled in the art have provided a packing seal assembly for a single stage, single suction centrifugal pump to address the problems set forth in the background above.
SUMMERY OF THE UTILITY MODEL
In order to remedy the above insufficiency, the utility model provides a packing sealing device of single-stage single-suction centrifugal pump, aiming at improving the problem that the automatic compressing tightly is not convenient for.
The utility model discloses a realize like this:
the utility model provides a packing sealing device of single-stage single-suction centrifugal pump, including pump body mechanism and sealing mechanism.
The pump body mechanism comprises a pump shell, a pump shaft, a first sealing ring and a first supporting plate, wherein the pump shaft is arranged in the middle of the pump shell, the first sealing ring is connected to the inner wall of the pump shell, the number of the first sealing ring is two, the first supporting plate is arranged on the periphery of the pump shell, the sealing mechanism comprises a seal box, an adjusting component, a connecting component, a supporting block, a sealing plate, a top block, a filler body and a second sealing ring, the seal box is inserted in the pump shell, the pump shaft penetrates through the seal box, the connecting component is connected to the periphery of the seal box, the connecting component is in threaded connection with the first supporting plate, the adjusting component is arranged on the inner wall of the seal box, the supporting block is connected to one side of the adjusting component, the sealing plate is attached to the inner wall of the seal box, the top block is arranged on one side of the sealing plate, and the top block is attached to the supporting block, the packing body is located between the sealing plate and the pump shaft, the second sealing ring is connected to the outer surface of the sealing box, the second sealing ring is attached to the inner wall of the pump shell, and the first sealing ring is attached to the outer surface of the sealing box.
The utility model discloses a centrifugal pump is inhaled to single-stage list packs sealing device embodiment, the adjusting part includes support, first spring, extension board, guide rail, slide and slide rail, leg joint in the seal box inner wall, the support sets up to eight at least, first spring both ends with the support with the extension board is connected, the tray install in extension board one side, the guide rail connect in the extension board opposite side, the slide install in guide rail one end, sliding linkage in the slide both ends.
The utility model discloses an in the packing sealing device embodiment of single-stage single suction centrifugal pump, the support is concave type structure, the slide rail is the arc structure.
The utility model discloses a centrifugal pump is inhaled to single-stage list in the packing sealing device embodiment, the spout has been seted up to the support inboard, slide rail sliding connection in the spout.
The utility model discloses a packing sealing device embodiment of centrifugal pump is inhaled to single-stage list, the second through-hole has been seted up to the support internal surface, the guide rail slide run through in the second through-hole.
The utility model discloses an in the packing sealing device embodiment of single-stage single-suction centrifugal pump, coupling assembling includes second layer board, bolt and second spring, the second layer board connect in seal box week side, the third through-hole has been seted up to second layer board internal surface, the bolt slide run through in the third through-hole, the second spring cup joint in the bolt surface.
The utility model discloses a packing sealing device embodiment of single-stage single suction centrifugal pump, threaded hole is seted up to first layer board internal surface, the bolt screw thread run through in the screw hole.
In the embodiment of the packing sealing device of the single-stage single-suction centrifugal pump of the present invention, the second spring is located between the second supporting plate and the first supporting plate.
The utility model discloses a packing sealing device embodiment of single-stage single suction centrifugal pump, the tray is the ball-type structure, the kicking block is the hemisphere type structure, the tray is located kicking block week side.
The utility model discloses an in the packing sealing device embodiment of single-stage single suction centrifugal pump, first through-hole has been seted up to the seal box both sides, first through-hole with pump shaft clearance fit.
The utility model has the advantages that: the utility model discloses a packing sealing device of single-stage single-suction centrifugal pump that obtains through the above-mentioned design, when using, after the filler body receives wearing and tearing and extrusion under the long-term contact stress of pump shaft, can produce the clearance between filler body and the pump shaft, the elasticity of first spring can drive the extension board at this moment inwards to move, the extension board can drive the tray inwards to move, the tray can extrude the kicking block inwards to move, the kicking block can drive the closing plate inwards to move, the closing plate can extrude the filler body, make the filler body inwards move, laminate in the pump shaft outer surface, the closing plate can improve the leakproofness between pump shaft and seal box simultaneously, first sealing washer and second sealing washer can improve the leakproofness between seal box and the pump case, improve the sealed effect of centrifugal pump greatly, reduce the leakage quantity of centrifugal pump, thereby reached the purpose convenient automatic compressing tightly, when the filler receives wearing and extruding under the long-term contact stress of pivot, when losing certain elasticity, through the automatic extrusion filler of compact structure, make the filler hug closely at the pivot surface, improve centrifugal pump seal effect, reduce and let out leakage quantity, save the resource, also can improve centrifugal pump's life simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a packing sealing device of a single-stage single-suction centrifugal pump provided by an embodiment of the invention;
fig. 2 is a schematic structural view of a pump body mechanism according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sealing mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an adjusting assembly according to an embodiment of the present invention;
fig. 5 is a schematic view of a connecting assembly structure provided by an embodiment of the present invention.
In the figure: 10-a pump body mechanism; 110-a pump housing; 120-a pump shaft; 130-a first seal ring; 140-a first pallet; 150-a threaded hole; 20-a sealing mechanism; 210-a sealed box; 220-an adjustment assembly; 221-a scaffold; 222-a first spring; 223-support plate; 224-a guide rail; 225-a sled; 226-a slide rail; 227-a chute; 228-a second via; 230-a connection assembly; 231-a second pallet; 232-bolt; 233-a second spring; 234-third via; 240-a support block; 250-a sealing plate; 260-top block; 270-a filler body; 280-a second sealing ring; 290-first via.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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 should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1, the present invention provides a packing sealing device for a single-stage single-suction centrifugal pump, which includes a pump body mechanism 10 and a sealing mechanism 20.
The sealing mechanism 20 is in threaded connection with the pump body mechanism 10, the sealing mechanism 20 is inserted into the pump body mechanism 10, and the sealing mechanism 20 is used for sealing a rotating shaft of the pump body mechanism 10 to reduce leakage.
Referring to fig. 1 and 2, the pump body mechanism 10 includes a pump casing 110, a pump shaft 120, a first sealing ring 130 and a first supporting plate 140, the pump shaft 120 is disposed in the middle of the pump casing 110, the first sealing ring 130 is connected to the inner wall of the pump casing 110, specifically, the first sealing ring 130 is fixedly connected to the inner wall of the pump casing 110 by gluing, the number of the first sealing ring 130 is two, the first supporting plate 140 is installed on the periphery of the pump casing 110, specifically, the first supporting plate 140 is installed on the periphery of the pump casing 110 by welding, and the pump shaft 120 is used for driving the impeller to rotate.
Referring to fig. 1, 2 and 3, the sealing mechanism 20 includes a seal box 210, an adjusting assembly 220, a connecting assembly 230, a holder 240, a seal plate 250, a top block 260, a packing body 270 and a second seal ring 280, the seal box 210 is inserted into the pump housing 110, the pump shaft 120 penetrates through the seal box 210, the connecting assembly 230 is connected to the peripheral side of the seal box 210, the connecting assembly 230 is in threaded connection with a first support plate 140, the adjusting assembly 220 is mounted on the inner wall of the seal box 210, the holder 240 is connected to one side of the adjusting assembly 220, the seal plate 250 is attached to the inner wall of the seal box 210, the top block 260 is mounted on one side of the seal plate 250, specifically, the top block 260 is fixedly mounted on one side of the seal plate 250 by welding, the holder 240 is attached to the filler body 270 between the seal plate 250 and the pump shaft 120, the second seal ring 280 is connected to the outer surface of the seal box 210, specifically, the second seal ring 280 is fixedly connected to the outer surface of the seal box 210 by bonding, the second packing 280 is attached to the inner wall of the pump case 110, the first packing 130 is attached to the outer surface of the seal box 210, the first packing 130 and the second packing 280 improve the sealing between the pump case 110 and the seal box 210, and the seal plate 250 improves the sealing between the packing body 270 and the seal box 210.
In some specific embodiments, the retainer block 240 has a spherical structure, the top block 260 has a hemispherical structure, the retainer block 240 is located on the periphery of the top block 260, the seal box 210 has first through holes 290 formed on both sides thereof, and the first through holes 290 are in clearance fit with the pump shaft 120.
Referring to fig. 2, 3 and 4, the adjusting assembly 220 includes a bracket 221, a first spring 222, a support plate 223, a guide rail 224, a sliding plate 225 and a sliding rail 226, the bracket 221 is connected to an inner wall of the hermetic container 210, specifically, the bracket 221 is fixedly connected to the inner wall of the hermetic container 210 by welding, at least eight brackets 221 are provided, two ends of the first spring 222 are connected to the bracket 221 and the support plate 223, specifically, two ends of the first spring 222 are fixedly connected to the bracket 221 and the support plate 223 by welding, a support block 240 is mounted on one side of the support plate 223, specifically, the support block 240 is fixedly mounted on one side of the support plate 223 by welding, the guide rail 224 is connected to the other side of the support plate 223 by welding, the sliding plate 225 is mounted on one end of the guide rail 224, specifically, the sliding plate 225 is fixedly mounted on one end of the guide rail 224 by welding, the sliding rail 226 is connected to two ends of the sliding plate 225, specifically, the sliding rail 226 is fixedly connected to two ends of the sliding plate 225 by welding, after the packing body 270 is worn and extruded under the long-term contact stress of the pump shaft 120, a gap is generated between the packing body 270 and the pump shaft 120, at the moment, the elastic force of the first spring 222 can drive the support plate 223 to move inwards, the support plate 223 can drive the support block 240 to move inwards, the support block 240 can extrude the top block 260 to move inwards, the top block 260 can drive the sealing plate 250 to move inwards, the sealing plate 250 can extrude the packing body 270, the packing body 270 can move inwards, the packing body 270 can be attached to the outer surface of the pump shaft 120 tightly, and the sealing performance between the pump shaft 120 and the sealing box 210 is improved.
In some specific embodiments, the bracket 221 has a concave structure, the sliding rail 226 has an arc structure, the sliding groove 227 is formed inside the bracket 221, the sliding rail 226 is slidably connected to the sliding groove 227, the inner surface of the bracket 221 has a second through hole 228, the guide rail 224 slidably penetrates through the second through hole 228, and the sliding rail 226, the sliding groove 227 and the guide rail 224 are used for improving the stability of the support block 240 during the moving process.
Referring to fig. 2, 3 and 5, the connection assembly 230 includes a second support plate 231, a bolt 232 and a second spring 233, the second support plate 231 is connected to the periphery of the seal box 210, specifically, the second support plate 231 is fixedly connected to the periphery of the seal box 210 by welding, a third through hole 234 is formed in the inner surface of the second support plate 231, the bolt 232 slidably penetrates through the third through hole 234, the second spring 233 is sleeved on the outer surface of the bolt 232, the second support plate 231 is used for being in threaded connection with the first support plate 140 by the bolt 232, so that the seal box 210 is mounted on the pump housing 110, and the second spring 233 is used for adjusting the distance between the second support plate 231 and the first support plate 140.
In some embodiments, the first support plate 140 has a threaded hole 150 formed in an inner surface thereof, the bolt 232 is threaded through the threaded hole 150, and the second spring 233 is disposed between the second support plate 231 and the first support plate 140.
The working principle of the packing sealing device of the single-stage and single-suction centrifugal pump is as follows: when the packing body 270 is worn and extruded under the long-term contact stress of the pump shaft 120, a gap is generated between the packing body 270 and the pump shaft 120, at the moment, the elastic force of the first spring 222 drives the support plate 223 to move inwards, the support plate 223 drives the support block 240 to move inwards, the support block 240 extrudes the top block 260 to move inwards, the top block 260 drives the sealing plate 250 to move inwards, the sealing plate 250 extrudes the packing body 270 to enable the packing body 270 to move inwards and be attached to the outer surface of the pump shaft 120, meanwhile, the sealing plate 250 can improve the sealing property between the pump shaft 120 and the sealing box 210, the first sealing ring 130 and the second sealing ring 280 can improve the sealing property between the sealing box 210 and the pump shell 110, the sealing effect of the centrifugal pump is greatly improved, the leakage amount of the centrifugal pump is reduced, and the purpose of facilitating automatic compression is achieved, and when the packing is worn and extruded under the long-term contact stress of the rotating shaft, when losing certain elasticity, through the automatic extrusion filler of compact structure, make the filler hug closely at the pivot surface, improve centrifugal pump seal effect, reduce and let out leakage quantity, save the resource, also can improve centrifugal pump's life simultaneously.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A packing sealing device of a single-stage single-suction centrifugal pump is characterized by comprising
The pump body mechanism (10) comprises a pump shell (110), a pump shaft (120), a first sealing ring (130) and a first supporting plate (140), wherein the pump shaft (120) is arranged in the middle of the pump shell (110), the first sealing ring (130) is connected to the inner wall of the pump shell (110), the number of the first sealing ring (130) is two, and the first supporting plate (140) is arranged on the peripheral side of the pump shell (110);
the sealing mechanism (20), the sealing mechanism (20) includes a sealing box (210), an adjusting component (220), a connecting component (230), a support block (240), a sealing plate (250), a top block (260), a packing body (270) and a second sealing ring (280), the sealing box (210) is inserted into the pump shell (110), the pump shaft (120) penetrates through the sealing box (210), the connecting component (230) is connected to the periphery of the sealing box (210), the connecting component (230) is in threaded connection with the first support plate (140), the adjusting component (220) is installed on the inner wall of the sealing box (210), the support block (240) is connected to one side of the adjusting component (220), the sealing plate (250) is attached to the inner wall of the sealing box (210), the top block (260) is installed on one side of the sealing plate (250), and the top block (260) is attached to the support block (240), the packing body (270) is located between the sealing plate (250) and the pump shaft (120), the second sealing ring (280) is connected to the outer surface of the sealing box (210), the second sealing ring (280) is attached to the inner wall of the pump shell (110), and the first sealing ring (130) is attached to the outer surface of the sealing box (210).
2. The packing sealing device of a single-stage single-suction centrifugal pump according to claim 1, wherein the adjusting assembly (220) comprises a bracket (221), a first spring (222), a support plate (223), a guide rail (224), a sliding plate (225) and a sliding rail (226), the bracket (221) is connected to the inner wall of the seal box (210), the number of the bracket (221) is at least eight, two ends of the first spring (222) are connected with the bracket (221) and the support plate (223), the support block (240) is installed on one side of the support plate (223), the guide rail (224) is connected to the other side of the support plate (223), the sliding plate (225) is installed on one end of the guide rail (224), and the sliding rail (226) is connected to two ends of the sliding plate (225).
3. The packing seal arrangement of a single stage, single suction centrifugal pump according to claim 2, characterized in that said bracket (221) is of concave configuration and said slide rail (226) is of arcuate configuration.
4. The packing sealing device of a single-stage single-suction centrifugal pump according to claim 2, wherein a sliding groove (227) is formed inside the bracket (221), and the sliding rail (226) is slidably connected to the sliding groove (227).
5. The packing sealing device of a single-stage single-suction centrifugal pump according to claim 2, wherein the inner surface of the bracket (221) is provided with a second through hole (228), and the guide rail (224) is slidably inserted through the second through hole (228).
6. The packing sealing device of a single-stage single-suction centrifugal pump according to claim 1, wherein the connecting assembly (230) comprises a second supporting plate (231), a bolt (232) and a second spring (233), the second supporting plate (231) is connected to the periphery of the seal box (210), a third through hole (234) is formed in the inner surface of the second supporting plate (231), the bolt (232) slidably penetrates through the third through hole (234), and the second spring (233) is sleeved on the outer surface of the bolt (232).
7. The packing seal device of a single-stage single-suction centrifugal pump according to claim 6, wherein the first supporting plate (140) is provided with a threaded hole (150) on the inner surface, and the bolt (232) is threaded through the threaded hole (150).
8. Packing seal arrangement of a single stage, single suction centrifugal pump according to claim 6, characterized in that the second spring (233) is located between the second bracket (231) and the first bracket (140).
9. The packing seal device of a single-stage single-suction centrifugal pump according to claim 1, wherein the holder block (240) is of a ball-type structure, the top block (260) is of a hemispherical structure, and the holder block (240) is located on the periphery of the top block (260).
10. The packing sealing device of a single-stage single-suction centrifugal pump according to claim 1, wherein the sealing box (210) is provided with first through holes (290) at two sides, and the first through holes (290) are in clearance fit with the pump shaft (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120273842.XU CN214742313U (en) | 2021-01-29 | 2021-01-29 | Packing sealing device of single-stage single-suction centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120273842.XU CN214742313U (en) | 2021-01-29 | 2021-01-29 | Packing sealing device of single-stage single-suction centrifugal pump |
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| CN214742313U true CN214742313U (en) | 2021-11-16 |
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| CN202120273842.XU Active CN214742313U (en) | 2021-01-29 | 2021-01-29 | Packing sealing device of single-stage single-suction centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681202A (en) * | 2023-01-04 | 2023-02-03 | 南通森萱药业有限公司 | Shaft end sealing device of chemical centrifugal pump |
-
2021
- 2021-01-29 CN CN202120273842.XU patent/CN214742313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681202A (en) * | 2023-01-04 | 2023-02-03 | 南通森萱药业有限公司 | Shaft end sealing device of chemical centrifugal pump |
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