CN112049800A - Horizontal double entry pump in energy-saving double containment level is multistage - Google Patents

Abstract

The invention discloses an energy-saving double-sealing horizontal multi-stage middle-open horizontal double-suction pump, and particularly relates to the technical field of centrifugal double-suction pumps. According to the double-suction pump, the anti-blocking structure is arranged, the filter screen is arranged in the liquid inlet, the clamping block is fixedly connected to the outer portion of the filter screen, the fixing block is fixedly connected to the inner side wall of the liquid inlet, the clamping groove is formed in the fixing block, when the double-suction pump is used, the filter screen can filter liquid entering the interior of the pump body from the liquid inlet, impurities in the liquid are prevented from entering the interior of the pump body, the impurities are prevented from remaining in the interior of the pump body to cause blockage in the interior of the pump body, meanwhile, the filter screen can be conveniently detached and cleaned through the clamping groove and the clamping block.

Description

Horizontal double entry pump in energy-saving double containment level is multistage

Technical Field

The invention relates to the technical field of centrifugal double-suction pumps, in particular to an energy-saving double-sealing horizontal multi-stage middle-open horizontal double-suction pump.

Background

With the continuous development and progress of science and technology, various centrifugal pumps appear on the market, wherein the double-seal horizontal multi-stage middle-open horizontal double-suction pump belongs to one type of centrifugal pump, but the existing double-seal horizontal multi-stage middle-open horizontal double-suction pump has many problems and defects, so that a novel double-seal horizontal multi-stage middle-open horizontal double-suction pump is needed.

In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved:

(1) impurities are easy to remain in the traditional energy-saving double-sealing horizontal multi-stage middle-open horizontal double-suction pump, so that the interior of a pump body is blocked, and the normal use of the double-suction pump is influenced;

(2) the traditional energy-saving double-sealing horizontal multi-stage middle-opening horizontal double-suction pump is easy to cause liquid seepage and leakage at the joint of the liquid inlet and the liquid outlet and can not meet the use requirement;

(3) the pump shaft and the coupling of the traditional energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump are exposed outside, so that potential safety hazards exist;

(4) the pump shaft and the coupling of the traditional energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump are difficult to mount and fix, and are inconvenient to use;

(5) the friction between the pump shaft and the bearing of the traditional energy-saving double-sealing horizontal multi-stage middle-open horizontal double-suction pump is large, so that energy is wasted, the pump shaft is easily abraded, and the service life of the double-suction pump is shortened.

Disclosure of Invention

The invention aims to provide an energy-saving double-sealing horizontal multi-stage middle-open horizontal double-suction pump, which aims to solve the problem that impurities are easy to remain in the pump body, so that the blockage in the pump body is caused, and the normal use of the double-suction pump is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: an energy-saving double-sealing horizontal multi-stage middle-open horizontal double-suction pump comprises a pump body and a pump shaft, wherein both sides of the pump body are fixedly connected with bearing seats, the bearing is fixedly connected inside the bearing seat, the inner side wall of the bearing is provided with an anti-friction structure, a pump shaft penetrates through the bearing, a first-stage impeller is fixedly connected with one side of the outer part of the pump shaft, the other side of the outside of the pump shaft is uniformly and fixedly connected with a secondary impeller, one side of the rear end of the pump body is provided with a liquid outlet, a liquid inlet is arranged on the other side of the front end of the pump body, a splicing sealing structure is arranged outside the liquid outlet and the liquid inlet, a central fin plate is arranged outside the pump body, locking bolts are uniformly arranged inside the central fin plate, a shaft coupling is arranged on one side of the pump shaft, a fixing structure is arranged between the pump shaft and the shaft coupling, and an anti-blocking structure is arranged in the liquid inlet;

prevent blockking up the structure and include the filter screen, the filter screen sets up the inside at the inlet, the outside fixedly connected with joint piece of filter screen, fixedly connected with fixed block on the inside wall of inlet, the inside of fixed block is provided with the joint groove.

Preferably, the width of joint piece is less than the width in joint groove, the joint piece inlays in the inside in joint groove, the block is connected between joint groove and the joint piece.

Preferably, the concatenation seal structure comprises connecting bolt, sealing washer, nut and flange, flange fixed connection is in the outside of liquid outlet and inlet, connecting bolt has been run through to the inside of flange border position department, the outside one end of connecting bolt is provided with the nut, flange's inboard is provided with the sealing washer.

Preferably, one end of the sealing ring is embedded into the connecting flange, and the other end of the sealing ring extends to the outside of one end of the connecting flange.

Preferably, a protective cover is arranged outside the joint of the pump shaft and the coupling, the protective cover is fixedly connected to one side of the pump body, and heat conduction holes are uniformly formed in the side wall of the protective cover.

Preferably, the fixed knot constructs by fixing base, inside groove, spacing steel sheet and spacing groove and constitutes, fixing base fixed connection is in one side of shaft coupling, the inside one side of fixing base is provided with the inside groove, the inside of inside groove is provided with the spacing groove, spacing steel sheet fixed connection is in the outside one side of pump shaft.

Preferably, the limiting steel plates correspond to the limiting grooves one by one, and the limiting steel plates are connected with the limiting grooves in a sliding mode.

Preferably, the friction reducing structure is composed of balls, rolling tracks, an inner steel ring and gaskets, the balls are evenly and movably connected to the inner side wall of the bearing, the inner steel ring is arranged inside the bearing, the rolling tracks are fixedly connected to the outer side wall of the inner steel ring, and the gaskets are arranged on the inner side wall of the inner steel ring.

Preferably, the balls are distributed annularly on the inner side wall of the bearing.

Preferably, the width of the rolling track is greater than that of the ball, and one end of the ball penetrates into the rolling track.

Compared with the prior art, the invention has the beneficial effects that: the energy-saving double-sealing horizontal multi-stage middle-opening horizontal double-suction pump not only prevents internal residual impurities from causing the blockage of the interior of a pump body, ensures the normal use of the double-suction pump, realizes that the liquid seepage and leakage phenomena are not easy to occur at the joint of a liquid inlet and a liquid outlet, can meet the use requirement, realizes the protection of a pump shaft and a coupling, eliminates potential safety hazards, realizes the simple installation and fixation of the pump shaft and the coupling, is convenient to use, realizes the small friction force between the pump shaft and a bearing, not only saves energy, but also is not easy to cause the abrasion of the pump shaft, and improves the service life of the double-suction pump;

(1) by arranging the anti-blocking structure, the filter screen is arranged in the liquid inlet, the clamping block is fixedly connected to the outer part of the filter screen, the fixed block is fixedly connected to the inner side wall of the liquid inlet, the clamping groove is formed in the fixed block, when the double-suction pump is used, the filter screen can filter liquid entering the interior of the pump body from the liquid inlet, impurities in the liquid are prevented from entering the interior of the pump body, the impurities are prevented from remaining in the interior of the pump body to cause blockage in the interior of the pump body, meanwhile, the filter screen can be conveniently detached and cleaned through the clamping groove and the clamping block, and the normal use of the;

(2) by arranging the connecting bolt, the sealing ring, the nut and the connecting flange, when in use, the connecting flange can facilitate the liquid outlet and the liquid inlet to be connected with a liquid conveying pipe, and meanwhile, the sealing ring on the connecting flange can improve the sealing performance of the joint, avoid the liquid seepage and leakage phenomenon and meet the use requirement;

(3) the protective cover is arranged outside the joint of the pump shaft and the coupler and fixed on one side of the pump body, and the side wall of the protective cover is uniformly provided with the heat conduction holes;

(4) by arranging the fixing seat, the inner groove, the limiting steel plate and the limiting groove, when in use, the limiting groove in the inner groove is correspondingly inserted with the limiting steel plate in a sliding manner, so that the shaft coupling and the pump shaft can be fixedly installed without bolts, the operation is simple, and the use is very convenient;

(5) through being provided with ball, rolling track, interior steel ring and gasket, when using, the pump shaft drives the steel ring rotation in rotating the in-process, and interior steel ring rotates and drives the ball and roll in rolling track inside, and the frictional force between pump shaft and the bearing that can significantly reduce like this not only the energy saving can prevent moreover that the pump shaft from wearing and tearing appear after long-time the use, improves the life of this double entry pump.

Drawings

FIG. 1 is a schematic top sectional view of the present invention;

FIG. 2 is a schematic top view of a partial cross-sectional structure of a coupling flange according to the present invention;

FIG. 3 is an enlarged side view of a fixing structure according to the present invention;

FIG. 4 is an enlarged side view of the shield of the present invention;

FIG. 5 is an enlarged partial cross-sectional view taken at A in FIG. 1 according to the present invention;

FIG. 6 is an enlarged side view of a portion of a cross-section of the friction reducing structure of the present invention.

In the figure: 1. a pump body; 2. locking the bolt; 3. splicing and sealing structures; 301. a connecting bolt; 302. a seal ring; 303. a nut; 304. a connecting flange; 4. a liquid outlet; 5. a central fin plate; 6. a first stage impeller; 7. a pump shaft; 8. a protective cover; 9. a heat conduction hole; 10. a coupling; 11. a fixed structure; 1101. a fixed seat; 1102. an inner tank; 1103. a limiting steel plate; 1104. a limiting groove; 12. a bearing; 13. a liquid inlet; 14. filtering with a screen; 15. a secondary impeller; 16. a bearing seat; 17. an antifriction structure; 1701. a ball bearing; 1702. a rolling track; 1703. an inner steel ring; 1704. a gasket; 18. a fixed block; 19. a clamping groove; 20. and a clamping block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-6, an energy-saving double-sealing horizontal multi-stage split horizontal double-suction pump comprises a pump body 1 and a pump shaft 7, wherein bearing seats 16 are fixedly connected to both sides of the pump body 1, bearings 12 are fixedly connected to the inside of the bearing seats 16, a friction reducing structure 17 is arranged on the inner side wall of each bearing 12, the pump shaft 7 penetrates through the inside of each bearing 12, a first-stage impeller 6 is fixedly connected to one side of the outside of the pump shaft 7, a second-stage impeller 15 is fixedly connected to the other side of the outside of the pump shaft 7, a liquid outlet 4 is arranged on one side of the rear end of the pump body 1, a liquid inlet 13 is arranged on the other side of the front end of the pump body 1, a splicing sealing structure 3 is arranged on the outside of each of the liquid outlet 4 and the liquid inlet 13, a central fin plate 5 is arranged on the outside of the pump body 1, locking, an anti-blocking structure is arranged in the liquid inlet 13;

referring to fig. 1-6, the energy-saving double-sealing horizontal multi-stage middle-open horizontal double-suction pump further comprises an anti-clogging structure, wherein the anti-clogging structure comprises a filter screen 14, the filter screen 14 is arranged inside the liquid inlet 13, a clamping block 20 is fixedly connected to the outside of the filter screen 14, a fixing block 18 is fixedly connected to the inner side wall of the liquid inlet 13, and a clamping groove 19 is formed inside the fixing block 18;

the width of the clamping block 20 is smaller than that of the clamping groove 19, the clamping block 20 is embedded in the clamping groove 19, and the clamping groove 19 is connected with the clamping block 20 in a clamping mode;

specifically, as shown in fig. 1 and 5, filter screen 14 can filter the liquid that gets into pump body 1 inside from inlet 13, avoids impurity in the liquid to get into the inside of the pump body 1, prevents that impurity from remaining in the inside of the pump body 1 and causing the pump body 1 inside to appear blockking up, and filter screen 14 passes through joint groove 19 and joint piece 20 simultaneously and can be convenient for dismantle the clearance to filter screen 14, guarantees the normal use of this double entry pump.

Example 2: the splicing sealing structure 3 consists of a connecting bolt 301, a sealing ring 302, a nut 303 and a connecting flange 304, the connecting flange 304 is fixedly connected to the outer parts of the liquid outlet 4 and the liquid inlet 13, the connecting bolt 301 penetrates through the inner part of the edge position of the connecting flange 304, the nut 303 is arranged at one end of the outer part of the connecting bolt 301, and the sealing ring 302 is arranged on the inner side of the connecting flange 304;

one end of the sealing ring 302 is embedded inside the connecting flange 304, and the other end of the sealing ring 302 extends to the outside of one end of the connecting flange 304;

specifically, as shown in fig. 1 and fig. 2, the connecting flange 304 may facilitate the connection of the liquid outlet 4 and the liquid inlet 13 with the infusion tube, and the sealing ring 302 on the connecting flange 304 may improve the sealing performance of the joint, thereby avoiding the liquid leakage phenomenon and meeting the use requirement.

Example 3: a protective cover 8 is arranged outside the joint of the pump shaft 7 and the coupling 10, the protective cover 8 is fixedly connected to one side of the pump body 1, and heat conduction holes 9 are uniformly formed in the side wall of the protective cover 8;

specifically, as shown in fig. 1 and 4, the protective cover 8 is fixed outside the pump shaft 7 and the coupling 10, the protective cover 8 can prevent the pump shaft 7 and the coupling 10 from being exposed to the outside, so that potential safety hazards of the double suction pump are eliminated, and meanwhile, the heat conducting hole 9 dissipates heat generated by friction on the pump shaft 7 and the coupling 10, so that the double suction pump is convenient to use.

Example 4: the fixing structure 11 is composed of a fixing seat 1101, an inner groove 1102, a limiting steel plate 1103 and a limiting groove 1104, wherein the fixing seat 1101 is fixedly connected to one side of the coupling 10, the inner groove 1102 is arranged on one side inside the fixing seat 1101, the limiting groove 1104 is arranged inside the inner groove 1102, and the limiting steel plate 1103 is fixedly connected to one side outside the pump shaft 7;

the limiting steel plates 1103 are in one-to-one correspondence with the limiting grooves 1104, and the limiting steel plates 1103 are in sliding connection with the limiting grooves 1104;

specifically, as shown in fig. 1 and 3, the limiting groove 1104 inside the inner groove 1102 is inserted into the limiting steel plate 1103 in a sliding manner, so that the shaft coupling 10 and the pump shaft 7 can be fixedly installed without bolts, and the operation is simple and the use is very convenient.

Example 5: the antifriction structure 17 consists of balls 1701, rolling tracks 1702, inner steel rings 1703 and gaskets 1704, the balls 1701 are uniformly and movably connected to the inner side wall of the bearing 12, the inner steel rings 1703 are arranged inside the bearing 12, the rolling tracks 1702 are fixedly connected to the outer side wall of the inner steel rings 1703, and the gaskets 1704 are arranged on the inner side wall of the inner steel rings 1703;

the balls 1701 are annularly distributed on the inner side wall of the bearing 12;

the width of the rolling track 1702 is larger than the width of the ball 1701, and one end of the ball 1701 penetrates into the inside of the rolling track 1702;

specifically, as shown in fig. 1 and 6, the pump shaft 7 drives the inner steel ring 1703 to rotate in the rotation process, and the inner steel ring 1703 rotates to drive the balls 1701 to roll inside the rolling track 1702, so that the friction force between the pump shaft 7 and the bearing 12 can be greatly reduced, energy is saved, the pump shaft 7 can be prevented from being worn after being used for a long time, and the service life of the double-suction pump is prolonged.

The working principle is as follows: when the double-suction pump is used, firstly, the filter screen 14 can filter liquid entering the interior of the pump body 1 from the liquid inlet 13, impurities in the liquid are prevented from entering the interior of the pump body 1, the impurities are prevented from remaining in the interior of the pump body 1 to cause blockage in the interior of the pump body 1, meanwhile, the filter screen 14 can be conveniently detached and cleaned through the clamping groove 19 and the clamping block 20, and normal use of the double-suction pump is guaranteed.

Afterwards, the connecting flange 304 can facilitate the connection of the liquid outlet 4 and the liquid inlet 13 with the liquid transport tube, and the sealing ring 302 on the connecting flange 304 can improve the sealing performance of the joint, thereby avoiding the liquid leakage and leakage phenomenon and meeting the use requirement.

Then, the protective cover 8 is fixed outside the pump shaft 7 and the coupling 10, the protective cover 8 can prevent the pump shaft 7 and the coupling 10 from being exposed outside, potential safety hazards of the double-suction pump are eliminated, and meanwhile, heat generated by friction on the pump shaft 7 and the coupling 10 is dissipated through the heat conduction holes 9, so that the double-suction pump is convenient to use.

Then, the limiting groove 1104 in the inner groove 1102 is correspondingly inserted into the limiting steel plate 1103 in a sliding manner, so that the shaft coupling 10 and the pump shaft 7 can be fixedly installed without bolts, the operation is simple, and the use is very convenient.

Finally, the pump shaft 7 drives the inner steel ring 1703 to rotate in the rotating process, the inner steel ring 1703 rotates to drive the balls 1701 to roll in the rolling track 1702, so that the friction force between the pump shaft 7 and the bearing 12 can be greatly reduced, energy is saved, the pump shaft 7 can be prevented from being worn after being used for a long time, and the service life of the double-suction pump is prolonged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. The utility model provides a horizontal double entry pump in energy-saving double containment level is multistage, includes the pump body (1) and pump shaft (7), its characterized in that: the pump comprises a pump body (1), wherein bearing seats (16) are fixedly connected to two sides of the pump body (1), a bearing (12) is fixedly connected to the inside of each bearing seat (16), an antifriction structure (17) is arranged on the inner side wall of each bearing (12), a pump shaft (7) penetrates through the inside of each bearing (12), a primary impeller (6) is fixedly connected to one side of the outside of each pump shaft (7), a secondary impeller (15) is uniformly and fixedly connected to the other side of the outside of each pump shaft (7), a liquid outlet (4) is arranged at one side of the rear end of the pump body (1), a liquid inlet (13) is arranged at the other side of the front end of the pump body (1), splicing sealing structures (3) are arranged outside the liquid outlet (4) and the liquid inlet (13), a central fin plate (5) is arranged outside the pump body (1), and locking bolts (2), a coupling (10) is arranged on one side of the pump shaft (7), a fixing structure (11) is arranged between the pump shaft (7) and the coupling (10), and an anti-blocking structure is arranged in the liquid inlet (13);

prevent blockking up structure includes filter screen (14), filter screen (14) set up the inside at inlet (13), the outside fixedly connected with joint piece (20) of filter screen (14), fixedly connected with fixed block (18) on the inside wall of inlet (13), the inside of fixed block (18) is provided with joint groove (19).

2. The energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 1, characterized in that: the width of joint piece (20) is less than the width of joint groove (19), joint piece (20) are inlayed in the inside of joint groove (19), the block is connected between joint groove (19) and joint piece (20).

3. The energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 1, characterized in that: splice seal structure (3) comprise connecting bolt (301), sealing washer (302), nut (303) and flange (304), flange (304) fixed connection is in the outside of liquid outlet (4) and inlet (13), flange (304) border position department's inside has run through connecting bolt (301), the outside one end of connecting bolt (301) is provided with nut (303), the inboard of flange (304) is provided with sealing washer (302).

4. The energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 3, characterized in that: one end of the sealing ring (302) is embedded into the connecting flange (304), and the other end of the sealing ring (302) extends to the outside of one end of the connecting flange (304).

5. The energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 1, characterized in that: the pump shaft (7) and shaft coupling (10) junction's outside is provided with protection casing (8), protection casing (8) fixed connection is in one side of the pump body (1), evenly be provided with heat conduction hole (9) on the lateral wall of protection casing (8).

6. The energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 1, characterized in that: the fixed knot constructs (11) and comprises fixing base (1101), inside groove (1102), spacing steel sheet (1103) and spacing groove (1104), fixing base (1101) fixed connection is in one side of shaft coupling (10), one side of fixing base (1101) inside is provided with inside groove (1102), the inside of inside groove (1102) is provided with spacing groove (1104), spacing steel sheet (1103) fixed connection is in the outside one side of pump shaft (7).

7. The energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 6, characterized in that: the limiting steel plates (1103) and the limiting grooves (1104) are in one-to-one correspondence, and the limiting steel plates (1103) are connected with the limiting grooves (1104) in a sliding mode.

8. The energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 1, characterized in that: the antifriction structure (17) comprises ball (1701), rolling track (1702), interior steel ring (1703) and gasket (1704), even swing joint of ball (1701) is on the inside wall of bearing (12), the inside of bearing (12) is provided with interior steel ring (1703), fixedly connected with rolling track (1702) on the lateral wall of interior steel ring (1703), be provided with gasket (1704) on the inside wall of interior steel ring (1703).

9. The application of the energy-saving double-sealing horizontal multistage middle-open horizontal double-suction pump according to claim 8 is characterized in that: firstly, the filter screen 14 can filter the liquid entering the pump body 1 from the liquid inlet 13, so that impurities in the liquid are prevented from entering the pump body 1, the impurities are prevented from remaining in the pump body 1 to cause blockage in the pump body 1, and meanwhile, the filter screen 14 can be conveniently detached and cleaned through the clamping groove 19 and the clamping block 20, and the normal use of the double-suction pump is ensured; then, the connecting flange 304 can facilitate the connection of the liquid outlet 4 and the liquid inlet 13 with the liquid conveying pipe, and the sealing ring 302 on the connecting flange 304 can improve the sealing performance of the joint, thereby avoiding the liquid leakage phenomenon and meeting the use requirement; then, the protective cover 8 is fixed outside the pump shaft 7 and the coupling 10, the protective cover 8 can prevent the pump shaft 7 and the coupling 10 from being exposed outside, potential safety hazards of the double-suction pump are eliminated, and meanwhile, heat generated by friction on the pump shaft 7 and the coupling 10 is dissipated through the heat conduction holes 9, so that the double-suction pump is convenient to use; then, the limiting groove 1104 in the inner groove 1102 is correspondingly inserted into the limiting steel plate 1103 in a sliding manner, so that the shaft coupling 10 and the pump shaft 7 can be fixedly installed without bolts, the operation is simple, and the use is very convenient;

finally, the pump shaft 7 drives the inner steel ring 1703 to rotate in the rotating process, the inner steel ring 1703 rotates to drive the balls 1701 to roll in the rolling track 1702, so that the friction force between the pump shaft 7 and the bearing 12 can be greatly reduced, energy is saved, the pump shaft 7 can be prevented from being worn after being used for a long time, and the service life of the double-suction pump is prolonged.

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