Vertical pipeline pump

Abstract

The utility model relates to the technical field of pipeline pumps, and discloses a vertical pipeline pump which comprises a pump body arranged outside a shaft body, a pump cover and a sealing gland, the top of the pump body is connected with the pump cover, the top of the pump cover is connected with the sealing gland, a sealing cavity is formed between the pump cover and the sealing gland, a pump body flushing hole is formed in the pump body, and a pump cover flushing hole is formed in the pump cover. A first sealing flushing hole and a second sealing flushing hole are symmetrically formed in the side wall of the sealing gland, the pump body flushing hole, the pump cover flushing hole and the sealing cavity are sequentially communicated, the first sealing flushing hole is externally communicated with a liquid storage tank water outlet and communicated with the sealing cavity, and the sealing cavity is communicated with the second sealing flushing hole. And the second sealing flushing hole is externally communicated with a liquid storage tank water inlet. The pump body flushing hole is formed in the pump body, the pump cover flushing hole is formed in the pump cover, and sealing flushing liquid enters the sealing cavity along the pump body flushing hole and the pump cover flushing hole, so that the sealing shaft sleeve is flushed and cooled, and the service life of the sealing shaft sleeve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline pump technical field, concretely is a kind of vertical pipeline pump. BACKGROUND

[0002] The conventional vertical pipeline pump is mainly composed of pump body, pump cover, impeller, shaft, motor frame, bearing seat, mechanical seal, sealing flushing pipeline and other components. The vertical pipeline pump is a kind of fluid conveying equipment with vertical structure, and the inlet and outlet have the same diameter and are located on the same center line, which can be installed in the pipeline like a valve. The working principle of the vertical pipeline pump is mainly based on the action of centrifugal force. When the motor is started, the impeller is driven to rotate at high speed by the pump shaft, and the fluid is sucked into the center of the impeller and is thrown out of the impeller under the action of centrifugal force, and flows to the outlet along the flow passage in the pump body. At the same time, the center part of the impeller forms a vacuum area, and the water in the water suction pool is continuously sucked into the center of the impeller under the action of atmospheric pressure through the water suction pipe. In this way, the fluid is continuously sucked into the pump body from the water suction port, and is pushed into the pipeline from the outlet, realizing a continuous water conveying process.

[0003] The enterprise pays attention to safety and environmental protection, and the mechanical seal of the vertical pipeline pump for conveying special medium is required to be changed from single seal to double seal to ensure the safety and reliability of the pump seal and reduce the occurrence of accidents. Therefore, the existing sealing cavity cannot meet the requirements of installing two mechanical seals. The sealing flushing pipeline is connected from the outlet of the pump to the sealing cavity. Due to the different flushing opening directions of the sealing design, the opening is required to be made on the side surface of the motor frame, which reduces the strength of the motor frame, and the flushing pipeline is connected externally, which is not beautiful and is easy to be damaged.

[0004] To solve the above problems, a vertical pipeline pump is provided. SUMMARY

[0005] The utility model aims at providing a vertical pipeline pump to solve the problems in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a vertical pipeline pump, comprising a pump body, a pump cover and a sealing gland arranged outside the shaft body; the top of the pump body is connected with the pump cover; the top of the pump cover is connected with the sealing gland;

[0007] A sealing cavity is formed between the pump cover and the sealing gland; a pump body flushing hole is formed in the pump body; a pump cover flushing hole is formed in the pump cover; a first sealing flushing hole and a second sealing flushing hole are symmetrically arranged on the side wall of the sealing gland; the pump body flushing hole, the pump cover flushing hole and the sealing cavity are sequentially communicated; the first sealing flushing hole is externally communicated with a water outlet of a liquid storage tank; the first sealing flushing hole is communicated with the sealing cavity; the sealing cavity is communicated with the second sealing flushing hole; and the second sealing flushing hole is externally communicated with a water inlet of the liquid storage tank.

[0008] Preferably, the pump body is provided with a pump body sealing ring.

[0009] Preferably, the shaft body outer wall is provided with a sealing shaft sleeve; and the sealing gland is arranged on the outer surface of the sealing shaft sleeve.

[0010] Preferably, the pump cover top is connected with one end of a bearing suspension; and the other end of the bearing suspension is arranged on the outer side of the shaft body through a bearing sleeve.

[0011] Preferably, the bearing suspension comprises a bearing connecting portion, a suspension connecting portion and a pump cover connecting portion which are connected with each other; the inner side of the bearing connecting portion is arranged on the outer surface of the shaft body through a bearing sleeve; the top end of the suspension connecting portion is connected with the bottom surface of the bearing connecting portion; the bottom end of the suspension connecting portion is connected with the top surface of the pump cover connecting portion; and the bottom surface of the pump cover connecting portion is connected with the top surface of the pump cover.

[0012] Preferably, the two ends of the bearing connecting portion are respectively connected with a bearing gland; the outer end surface of the bearing gland is provided with a dustproof disc; the dustproof disc is arranged on the outer side of the shaft body; and the bearing cavity is formed between the bearing connecting portion and the two bearing glands.

[0013] Preferably, the shaft body is provided with an impeller near one end of the pump body.

[0014] Preferably, the impeller is connected with the shaft body near the pump body through an impeller nut; and a plurality of balance holes are arranged on the impeller.

[0015] Preferably, the pump body top is provided with a motor bracket.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1. The pump cover and the bearing seat are improved and designed, the bearing suspension is designed, the sealing cavity and the bearing cavity are separated, even if the sealing shaft sleeve leaks, the conveying medium will not enter the bearing cavity, the bearing lubrication is ensured, and the service life of the bearing is prolonged.

[0018] 2. The pump body flushing hole is arranged on the pump body, and the pump cover flushing hole is arranged on the pump cover, so that the sealing flushing liquid enters the sealing cavity along the pump body flushing hole and the pump cover flushing hole, the sealing shaft sleeve is flushed and cooled, the service life of the sealing shaft sleeve is prolonged, and the overall strength of the application is enhanced, and the appearance is more compact and beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model discloses a structure schematic view.

[0020] In the figure: 1-pump body, 101-pump body flushing hole, 102-pump body sealing ring, 2-pump cover, 201-pump cover flushing hole, 3-sealing gland, 301-first sealing flushing hole, 302-second sealing flushing hole, 4-sealing cavity, 5-shaft body, 6-impeller, 601-impeller nut, 602-balance hole, 7-bearing suspension, 701-bearing connecting part, 702-suspension connecting part, 703-pump cover connecting part, 8-sealing sleeve, 9-bearing gland, 10-dustproof disc, 11-motor frame, 12-bearing cavity. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figure 1 The utility model provides a kind of technical scheme: a vertical pipeline pump, including the pump body 1 being arranged in the outer of shaft body 5, pump cover 2 and sealing gland 3, the top of the pump body 1 is connected with the pump cover 2, and the top of the pump cover 2 is connected with the sealing gland 3.

[0023] Sealing cavity 4 is formed between the pump cover 2 and sealing gland 3, pump body flushing hole 101 is set on the pump body 1, pump cover flushing hole 201 is set on the pump cover 2, and first sealing flushing hole 301 and second sealing flushing hole 302 are symmetrically arranged on the side wall of sealing gland 3, the pump body flushing hole 101, the pump cover flushing hole 201 and the sealing cavity 4 are sequentially communicated, the first sealing flushing hole 301 is communicated with the sealing cavity 4, the sealing cavity 4 is communicated with the second sealing flushing hole 302, and the second sealing flushing hole 302 is communicated with liquid storage tank inlet.

[0024] Further, the pump body 1 is provided with a pump body sealing ring 102.

[0025] Further, the outer wall of the shaft body 5 is provided with a sealing sleeve 8, and the sealing gland 3 is arranged on the outer surface of the sealing sleeve 8.

[0026] Further, the pump cover 2 is connected with one end of a bearing suspension 7, and the other end of the bearing suspension 7 is arranged on the outer side of the shaft body 5 through a bearing sleeve.

[0027] Further, the bearing suspension 7 comprises bearing connecting part 701, suspension connecting part 702, pump cover connecting part 703 connected with each other, the inner side of the bearing connecting part 701 is sleeved on the outer surface of the shaft body 5 through bearing sleeve, the bottom surface of the bearing connecting part 701 is connected with the top end of the suspension connecting part 702, the bottom end of the suspension connecting part 702 is connected with the top surface of the pump cover connecting part 703, and the bottom surface of the pump cover connecting part 703 is connected with the top surface of the pump cover 2.

[0028] The bearing connecting part 701, the suspension connecting part 702 and the pump cover connecting part 703 are connected through brazing, or the entire bearing suspension 7 is integrally formed by casting.

[0029] Further, the two ends of the bearing connecting part 701 are respectively connected with a bearing gland 9, the outer end surface of the bearing gland 9 is provided with a dustproof disc 10, the dustproof disc 10 is sleeved on the outer side of the shaft body 5, and the bearing connecting part 701 and the two bearing glands 9 form a bearing cavity 12.

[0030] The pump cover 2 and the bearing seat 12 are improved and designed, the bearing suspension 7 is designed, the sealing cavity 4 and the bearing cavity 13 are separated, even if the sealing shaft sleeve 8 leaks, the transported medium cannot enter the bearing cavity 13, the bearing lubrication is ensured, and the service life of the bearing is prolonged.

[0031] Further, the shaft body 5 is provided with an impeller 6 close to one end of the pump body 1.

[0032] Further, the impeller 6 is connected with the end of the shaft body 5 close to the pump body 1 through an impeller nut 601, and a plurality of balance holes 602 are formed in the impeller 6.

[0033] Further, the pump body 1 is provided with a motor bracket 11 on the top.

[0034] The pump cover 2 and the bearing seat 12 are improved and designed, the sealing cavity 4 is lengthened, the sealing space is increased, and the installation of two sets of mechanical seals is facilitated.

[0035] The pump body flushing hole 101 is formed in the pump body, and the pump cover flushing hole 201 is formed in the pump cover 2, so that the sealing flushing liquid enters the sealing cavity 4 along the pump body flushing hole 101 and the pump cover flushing hole 201, the sealing shaft sleeve 8 is flushed and cooled, and the service life of the sealing shaft sleeve 8 is prolonged. At the same time, the overall strength of the application is enhanced, and the appearance is more compact and beautiful.

[0036] Sealing flushing principle:

[0037] The first set of seal flushing is: medium from the outlet of the pump body 1, along the pump body flushing hole 101 into the pump cover flushing hole 201, into the sealing cavity 4, the first set of mechanical seal cooling. Then flush the medium from the sealing sleeve 8 and the pump cover 2, the pump cover sealing ring 202 and the impeller 6 on the gap and the balance hole 602 on the impeller 6, back to the impeller 6 inlet, so on and so forth.

[0038] The second set of seal flushing is: a liquid storage tank is installed near the pump body 1, medium from the liquid storage tank, through the flushing pipeline into the first seal flushing hole 301, thereby entering the sealing cavity 4, the seal cooling, and then from the second seal flushing hole 302, return to the liquid storage tank, so on and so forth.

[0039] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although the present application is described in the specification in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A vertical pipe pump characterized by, It includes pump body (1) arranged outside shaft body (5), pump cover (2) and sealing gland (3); the top of pump body (1) is connected with pump cover (2); the top of pump cover (2) is connected with sealing gland (3); Sealing cavity (4) is formed between pump cover (2) and sealing gland (3); pump body flushing hole (101) is formed on pump body (1); pump cover flushing hole (201) is formed on pump cover (2); first sealing flushing hole (301) and second sealing flushing hole (302) are symmetrically arranged on the side wall of sealing gland (3); the pump body flushing hole (101), the pump cover flushing hole (201) and the sealing cavity (4) are sequentially communicated; the first sealing flushing hole (301) is communicated with the water outlet of the liquid storage tank; the first sealing flushing hole (301) is communicated with the sealing cavity (4); the sealing cavity (4) is communicated with the second sealing flushing hole (302); the second sealing flushing hole (302) is communicated with the water inlet of the liquid storage tank.

2. A vertical line shaft pump according to claim 1, wherein, Pump body sealing ring (102) is arranged in pump body (1).

3. A vertical line shaft pump according to claim 1, wherein, Sealing shaft sleeve (8) is arranged on the outer wall of shaft body (5); sealing gland (3) is arranged on the outer surface of sealing shaft sleeve (8).

4. A vertical line shaft pump according to claim 1, wherein, Bearing suspension (7) is connected with one end of pump cover (2); the other end of bearing suspension (7) is arranged on the outer side of shaft body (5) through bearing sleeve.

5. A vertical line shaft pump according to claim 4, wherein, Bearing suspension (7) includes bearing connecting part (701), suspension connecting part (702) and pump cover connecting part (703); the inner side of bearing connecting part (701) is arranged on the outer surface of shaft body (5) through bearing sleeve; the top end of suspension connecting part (702) is connected with the bottom surface of bearing connecting part (701); the top surface of pump cover connecting part (703) is connected with the bottom end of suspension connecting part (702); the top surface of pump cover (2) is connected with the bottom surface of pump cover connecting part (703).

6. A vertical line shaft pump according to claim 5, wherein, Bearing gland (9) is arranged on both ends of bearing connecting part (701); dustproof disc (10) is arranged on the outer end surface of bearing gland (9); dustproof disc (10) is arranged on the outer side of shaft body (5); bearing cavity (12) is formed between bearing connecting part (701) and two bearing glands (9).

7. A vertical line shaft pump as claimed in claim 1, wherein, Impeller (6) is arranged on the end of shaft body (5) close to pump body (1).

8. A vertical line shaft pump according to claim 7, wherein, Impeller (6) is connected with the end of shaft body (5) close to pump body (1) through impeller nut (601); a plurality of balance holes (602) are formed on impeller (6).

9. A vertical line shaft pump as claimed in claim 1, wherein, Motor bracket (11) is arranged on the top of pump body (1).

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