CN220037056U - Double-end-face shaft seal double-suction pump - Google Patents

Abstract

The utility model discloses a double-end-face shaft seal double-suction pump which comprises an upper shell, wherein a detachable lower shell is arranged on the lower surface of the upper shell, and a water inlet pipe and a water outlet pipe are respectively and fixedly arranged on two sides of the lower shell. According to the utility model, the upper shell, the lower shell, the first flange, the second flange, the sealing gasket, the baffle ring, the annular groove, the bolt, the groove and the spring are arranged, the baffle ring is inserted into the annular groove to prevent the joint of the upper shell and the lower shell from being impacted by pressure, after long-term use, the connection of the bolt, the upper shell and the lower shell is gradually loosened, at the moment, the baffle ring is impacted to cause part of the bolt to leave the annular groove, but the baffle ring still plays a role of sealing protection, so that the baffle ring still has good sealing performance even under the condition of high internal pressure, leakage is avoided, the spring pulls the first flange and the second flange, and the phenomenon that the upper shell and the lower shell are separated excessively and even burst under the pressure is avoided, so that liquid leakage phenomenon is caused.

Description

Double-end-face shaft seal double-suction pump

Technical Field

The utility model relates to the technical field of double-suction pumps, in particular to a double-end-face shaft seal double-suction pump.

Background

The double suction pump is an important form of centrifugal pump, and is widely applied in engineering due to the characteristics of high lift, large flow and the like. The double suction pump is equivalent to two single suction impellers with the same diameter to work simultaneously, and the flow can be doubled under the same impeller outer diameter; the pump shell is horizontally opened, so that the inspection and maintenance are convenient; the impeller has symmetrical structure, no axial force and stable operation.

In the prior art, the internal flow of the double-suction pump is doubled, liquid is thrown out from the side face by the impeller, the pressure of the output cavity is improved, the liquid is pressurized to the outside, and the internal pressure of the double-suction pump is larger. Under long-term use, the joint is easier to loosen or burst, so that the liquid leakage phenomenon occurs, the normal operation of the pump is influenced, and the application efficiency of the pump is also influenced.

Disclosure of Invention

The utility model aims to provide a double-end-face shaft seal double-suction pump, which solves the problems that the internal pressure of the double-suction pump in the prior art is large, the joint is easier to loosen or burst under long-term use, and the liquid leakage phenomenon occurs, so that the normal operation of the pump is influenced, and the application efficiency of the pump is also influenced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a bi-polar face bearing seal double suction pump, includes the casing, the last casing lower surface is provided with detachable lower casing, inlet tube, drain pipe have been set firmly respectively to lower casing both sides, it is fixed with first flange, second flange respectively to go up casing and lower casing junction surface edge, fixed surface is connected with the separation ring under the first flange, the annular that corresponds with the separation ring position is seted up to the second flange upper surface, threaded connection has the bolt between first flange and the second flange, the inside recess of seting up of second flange, the inside spring that has set firmly of recess, spring lower extreme and recess bottom fixed connection, and spring upper end and first flange fixed connection.

Preferably, the sealing gaskets are fixedly arranged on the connecting surfaces of the upper shell and the lower shell.

Preferably, a rubber layer is fixedly arranged on the surface of the blocking ring.

Preferably, the first flange and the second flange are internally and fixedly provided with reinforcing ribs.

Preferably, the water inlet pipe, the water outlet pipe and the lower shell are fixedly connected with reinforcing blocks, and the reinforcing blocks are triangular.

Preferably, a base is fixed on the lower surface of the lower shell.

Preferably, the blocking ring is in interference fit with the annular groove.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is provided with the upper shell, the lower shell, the first flange, the second flange, the sealing gasket, the blocking ring, the annular groove, the bolt, the groove and the spring, wherein the blocking of the blocking ring inserted into the annular groove plays a role in sealing protection, the joint of the upper shell and the lower shell is continuously subjected to pressure impact, after long-term use, the connection of the bolt, the upper shell and the lower shell is gradually loosened, at the moment, the blocking ring is impacted to cause part to leave the annular groove, but the blocking ring still plays a role in sealing protection, so that the blocking ring still has good sealing performance even under the condition of high internal pressure, leakage is avoided, the spring pulls the first flange and the second flange, and the phenomenon of liquid leakage is avoided even if the upper shell and the lower shell are excessively separated and burst under the pressure.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the appearance structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of a baffle ring according to the present utility model.

In the figure: 1. an upper housing; 2. a lower housing; 3. a water inlet pipe; 4. a drain pipe; 51. a first flange; 52. a second flange; 6. a sealing gasket; 7. a blocking ring; 8. a ring groove; 9. a bolt; 10. a groove; 11. a spring; 12. a rubber layer; 13. a reinforcing block; 14. and (5) a base.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, in the embodiment of the utility model, a double-end shaft seal double-suction pump comprises an upper casing 1, a detachable lower casing 2 is arranged on the lower surface of the upper casing 1, a pump casing is divided into an upper casing 1 and a lower casing 2 in a horizontal manner, so that the inspection and maintenance are convenient, a water inlet pipe 3 and a water outlet pipe 4 are respectively and fixedly arranged on two sides of the lower casing 2, water enters the double-suction pump through the water inlet pipe 3 and is discharged through the water outlet pipe 4, a base 14 is fixed on the lower surface of the lower casing 2, and the base 14 is used for supporting the double-suction pump;

referring to fig. 1-3, the edge of the connecting surface of the upper casing 1 and the lower casing 2 is respectively fixed with a first flange 51 and a second flange 52, the lower surface of the first flange 51 is fixedly connected with a blocking ring 7, the blocking ring 7 is inserted into the annular groove 8 to block and play a sealing role, the upper surface of the second flange 52 is provided with an annular groove 8 corresponding to the position of the blocking ring 7, a bolt 9 is connected between the first flange 51 and the second flange 52 in a threaded manner, the internal pressure of the double-suction pump is larger, the connecting part of the upper casing 1 and the lower casing 2 is continuously subjected to pressure impact, after long-term use, the connection between the bolt 9 and the upper casing 1 and the lower casing 2 is gradually loosened, at the moment, the impacted part of the blocking ring 7 can leave the annular groove 8, the blocking ring 7 still plays a sealing role, even under the condition that the internal pressure is larger, good sealing performance can still be realized, leakage is avoided, a groove 10 is formed inside the second flange 52, a spring 11 is fixedly arranged inside the groove 10, the lower end of the spring 11 is fixedly connected with the bottom of the groove 10, the upper end of the spring 11 is fixedly connected with the first flange 51, the upper end of the spring 11 is loosely connected with the first flange 11, the bolt 51 is loosely pulled, the upper end of the spring 11 and the first flange 52 is tightly connected with the upper flange 1, the upper flange 51, the upper end of the first flange 52 is under the impact on the upper casing 2, the normal running of the pump is avoided, and the normal running of the pump is influenced by the pump due to the effect due to the impact of the pump on the pump, and the pump running due to the impact on the pump running efficiency caused by the impact on the lower pressure, and the impact caused by the impact on the pump when the pump running efficiency due to the impact, and the impact can be caused by the impact when the impact effect when the pump and the normal use;

referring to fig. 3, sealing gaskets 6 are fixedly arranged on the connection surfaces of the upper shell 1 and the lower shell 2, and the arrangement of the sealing gaskets 6 plays a first layer of sealing protection for the connection part of the upper shell 1 and the lower shell 2;

referring to fig. 3, a rubber layer 12 is fixedly arranged on the surface of the barrier ring 7, and the rubber layer 12 enables the barrier ring 7 to have a better sealing effect;

referring to fig. 2, reinforcing ribs are fixedly arranged inside the first flange 51 and the second flange 52, and the reinforcing ribs are used for reinforcing the first flange 51 and the second flange 52 so as to enable the upper shell 1 and the lower shell 2 to be connected more tightly;

referring to fig. 1, a reinforcing block 13 is fixedly connected between the water inlet pipe 3, the water outlet pipe 4 and the lower shell 2, the water inlet pipe 3 and the water outlet pipe 4 are more stable due to the reinforcing block 13, and the reinforcing block 13 is triangular;

referring to fig. 3, the blocking ring 7 is in interference fit with the annular groove 8, and the interference fit enables better tightness between the blocking ring 7 and the annular groove 8.

The working principle and the using flow of the utility model are as follows: the pump shell is divided into the upper shell 1 and the lower shell 2 in the middle of the level, the check and maintenance are convenient, the sealing gasket 6 is arranged to play a first-layer sealing protection on the connecting part of the upper shell 1 and the lower shell 2, the blocking ring 7 is inserted into the annular groove 8 to play a second-layer sealing protection, the impeller throws liquid out from the side face to further improve the pressure of the output cavity to realize the pressurizing to the outside to output the liquid, and then the internal pressure of the double-suction pump is larger, the connecting part of the upper shell 1 and the lower shell 2 is continuously subjected to pressure impact, after long-term use, the connection between the bolt 9 and the upper shell 1 and the lower shell 2 is gradually loosened, at the moment, the blocking ring 7 is separated from the annular groove 8 by the impact part, the blocking ring 7 still plays a sealing protection role, so that even under the condition of larger internal pressure, good sealing performance can be still realized, leakage is avoided, the spring 11 pulls the first flange 51 and the second flange 52, the phenomenon of liquid leakage is avoided, the upper shell 1 and the lower shell 2 are exploded under the pressure action, and the effect of the normal operation of the pump is influenced.

Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a bi-polar face bearing seal double entry pump, includes casing (1), the last casing (1) lower surface is provided with detachable lower casing (2), inlet tube (3), drain pipe (4) have been set firmly respectively to lower casing (2) both sides, its characterized in that: the novel plastic composite material sealing device is characterized in that a first flange (51) and a second flange (52) are respectively fixed on the edge of a connecting surface of the upper shell (1) and the lower shell (2), a blocking ring (7) is fixedly connected to the lower surface of the first flange (51), a ring groove (8) corresponding to the blocking ring (7) in position is formed in the upper surface of the second flange (52), bolts (9) are connected between the first flange (51) and the second flange (52) in a threaded mode, a groove (10) is formed in the second flange (52), a spring (11) is fixedly arranged in the groove (10), the lower end of the spring (11) is fixedly connected with the bottom of the groove (10), and the upper end of the spring (11) is fixedly connected with the first flange (51).

2. The double-ended shaft seal double-suction pump of claim 1 wherein: the sealing gaskets (6) are fixedly arranged on the connecting surfaces of the upper shell (1) and the lower shell (2).

3. The double-ended shaft seal double-suction pump of claim 1 wherein: a rubber layer (12) is fixedly arranged on the surface of the blocking ring (7).

4. The double-ended shaft seal double-suction pump of claim 1 wherein: reinforcing ribs are fixedly arranged in the first flange (51) and the second flange (52).

5. The double-ended shaft seal double-suction pump of claim 1 wherein: the water inlet pipe (3), the water outlet pipe (4) and the lower shell (2) are fixedly connected with reinforcing blocks (13), and the reinforcing blocks (13) are triangular.

6. The double-ended shaft seal double-suction pump of claim 1 wherein: the lower surface of the lower shell (2) is fixedly provided with a base (14).

7. The double-ended shaft seal double-suction pump of claim 1 wherein: the blocking ring (7) is in interference fit with the annular groove (8).