High-flow axially split pump with good sealing performance

Abstract

The utility model belongs to the technical field of axially split pumps, and discloses a high-flow axially split pump with good sealing performance, which comprises a bottom plate, a cushion block fixedly connected to the upper end of the bottom plate, a motor fixedly connected to the upper end of the cushion block, a dustproof net fixedly connected to the outer surface of the motor, and a pump body structure fixedly connected to the output end of the motor through a coupler. Through the sealing assembly, liquid can be effectively prevented from leaking from a sealing part, stable pressure in a system and normal transmission of a medium are ensured, the strict requirement for sealing performance under different working conditions is met, and through tight attachment of a sealing piece and a sealed part, possible gaps are filled, the medium is prevented from leaking out through the gaps, and the sealing performance is improved. According to the axially split pump, the normal state and the flowing environment of substances in the axially split pump are maintained, shaking can be effectively buffered through the pump shell assembly, the stability of the axially split pump during operation is guaranteed, the sealing problem caused by vibration can be reduced, and the sealing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of split-case pump technology, specifically to a high-flow split-case pump with good sealing performance. Background Technology

[0002] The working principle of a split-case pump is to transport liquid through the rotation of an impeller. The impeller is installed inside the pump casing and secured to the pump shaft, which is directly driven by a motor. A liquid suction port is located in the center of the pump casing, connected to a suction pipe. Liquid enters the pump through a foot valve and the suction pipe, and then flows into the discharge pipe through the outlet on the pump casing, completing the transport task.

[0003] Chinese Patent Publication No. CN214118483U discloses a single-stage double-suction split-case pump with excellent sealing performance. This design utilizes materials with superior sealing properties, resulting in a better overall seal and eliminating leakage during operation. Furthermore, a filter ball is installed inside the pump's inlet to filter impurities. This filter ball rotates within the inlet as the liquid flows, increasing the contact area between the rotating ball and the incoming liquid, thus improving the filtration effect and reducing the frequency of filter ball cleaning. This effectively prevents leaks in the split-case pump. Dust accumulates inside the pump. During use, the inlet and external water supply pipe are fixedly connected. When water enters the inlet from the supply pipe, the liquid flow pushes the fixed plate, thereby causing the filter ball to rotate outside the connecting shaft. This allows the entire surface of the filter ball to contact the water flow for filtration. After prolonged use, when the filter ball accumulates a lot of impurities, the connecting shaft can be pressed down to compress the strong spring, allowing the connecting shaft to be removed from the connecting sleeve. Then, the filter ball can be removed from the connecting shaft for cleaning or replacement. This makes the use of this new type of single-stage double-suction split-case pump with good sealing performance more convenient.

[0004] However, the following defects still exist in the actual implementation process: the split-case pump does not fill the internal gaps, which cannot prevent the medium from seeping out through the gaps, resulting in insufficient sealing.

[0005] Based on this, this utility model designs a high-flow split-case pump with good sealing performance to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-flow split-case pump with good sealing performance.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-flow split-case pump with good sealing performance includes a base plate, a pad block is fixedly connected to the upper end of the base plate, a motor is fixedly connected to the upper end of the pad block, a dustproof net is fixedly connected to the outer surface of the motor, and a pump body structure is fixedly connected to the output end of the motor through a coupling.

[0009] Furthermore, the pump body structure includes a pad, on the upper end of which the pump body is fixedly connected. The outer surface of the pump body is fixedly connected to the output end of the motor via a coupling. A sealing assembly is fixedly connected to the front end of the pump body, and a pump casing assembly is fixedly connected to the outside of the sealing assembly.

[0010] Furthermore, the pump housing assembly includes two springs, the lower ends of which are fixedly connected to the upper end of the base plate, and the upper ends of the two springs are fixedly connected to the housing. The upper end of the housing is provided with a water outlet, the front end of the housing is provided with a water inlet, and the rear end of the housing is fixedly connected to a connecting frame. The rear end of the connecting frame is fixedly connected to the front end of the sealing assembly.

[0011] Furthermore, the sealing assembly includes a positioning tube, a rotating ring fixedly connected to the inner cavity of the positioning tube, a pump shaft rotatably connected to the inner surface of the rotating ring, a rotating component rotatably connected to the outer surface of the pump shaft, a reinforcing tube fixedly connected to the inner surface of the rotating component by bolts, a pressure cap fixedly connected to the inner cavity of the reinforcing tube by bolts, a sealing ring one sleeved on the outer surface of the pressure cap, a sealing ring two sleeved on the outer surface of the reinforcing tube, and a sealing component fixedly connected to the outer surface of the pump shaft;

[0012] Furthermore, the sealing element includes a bushing 1, a bushing sealing ring 3 is provided in the inner cavity of the bushing 1, a positioning ring is fixedly connected to the outer surface of the bushing 1, a plurality of springs 2 are fixedly connected to the front end of the positioning ring, a push ring is fixedly connected to the front end of the plurality of springs 2, a moving ring 1 is fixedly connected to the outer surface of the bushing 1, the rear end of the moving ring 1 is in close contact with the front end of the push ring, a moving ring sealing ring 4 is provided on the inner surface of the moving ring 1, a connecting sleeve is rotatably connected to the outer surface of the moving ring 1, a stationary ring 1 is rotatably connected to the outer surface of the bushing 1, and a stationary ring sealing ring 5 is sleeved on the outer surface of the stationary ring 1;

[0013] Furthermore, the outer surface of the positioning tube is fixedly connected to the inner surface of the housing, and the outer surface of the positioning tube is fixedly connected to the inner surface of the connecting frame;

[0014] Furthermore, the inner cavity of the connecting sleeve is fixedly connected to the inner surface of the gland by bolts, and the outer surface of the stationary ring is in close contact with the inner surface of the gland;

[0015] Furthermore, the inner surface of the bushing is fixedly connected to the outer surface of the pump shaft, and the rear end of the pump shaft is fixedly connected to the front end of the pump body. Beneficial effects

[0016] (1) This solution can effectively prevent liquid from leaking from the sealing part through the sealing component, ensure the stability of the internal pressure of the system and the normal transmission of the medium, and meet the strict requirements for sealing performance under different working conditions.

[0017] (2) This solution uses a sealant that fits tightly against the sealed component, filling any gaps to prevent the medium from leaking out and maintaining the normal state and flow environment of the material inside the split-case pump.

[0018] (3) This solution can effectively buffer external shaking through the pump casing assembly, ensuring the stability of the split-case pump during operation, helping to reduce sealing problems caused by vibration and improve the sealing effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the pump body structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the pump housing assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the sealing assembly of this utility model;

[0024] Figure 5 This is a schematic diagram of the sealing element of this utility model.

[0025] The labels in the diagram represent:

[0026] 1. Base plate; 2. Pad block; 3. Motor; 4. Dustproof net; 5. Pump body structure; 51. Pad plate; 52. Pump body; 53. Sealing assembly; 531. Positioning tube; 532. Gland; 533. Reinforcing tube; 534. Rotating component; 535. Pump shaft; 536. Sealing ring one; 537. Sealing ring two; 538. Rotating ring; 539. Sealing component; 5391. Shaft sleeve one; 5392. Shaft sleeve sealing ring three; 5393. Positioning ring; 5394. Spring two; 5395. Connecting sleeve; 5396. Rotating ring sealing ring four; 5397. Stationary ring one; 5398. Stationary ring sealing ring five; 5399. Rotating ring one; 54. Pump casing assembly; 541. Spring one; 542. Casing; 543. Outlet; 544. Inlet; 545. Connecting frame. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] The present invention will be further described below with reference to the embodiments.

[0029] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-5 A high-flow split-case pump with good sealing performance includes a base plate 1, a pad 2 fixedly connected to the upper end of the base plate 1, a motor 3 fixedly connected to the upper end of the pad 2, a dustproof net 4 fixedly connected to the outer surface of the motor 3, and a pump body structure 5 fixedly connected to the output end of the motor 3 through a coupling.

[0030] In this embodiment of the utility model, the motor 3 is used to drive the pump shaft 535 of the split-case pump to rotate. The pump shaft 535 drives the impeller to rotate at high speed, causing the liquid to rotate as well. Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and gains energy. It leaves the outer edge of the impeller at high speed and enters the housing 542 to realize the conveying function of the split-case pump. The base plate 1 and the pad block 2 are used to make the motor 3 more stable, improve the rigidity constraint, and reduce the vibration generated when the motor 3 is in operation.

[0031] In some embodiments, such as Figure 2-5As shown, in a preferred embodiment of the present invention, the pump body structure 5 includes a pad 51, a pump body 52 is fixedly connected to the upper end of the pad 51, the outer surface of the pump body 52 is fixedly connected to the output end of the motor 3 through a coupling, a sealing component 53 is fixedly connected to the front end of the pump body 52, and a pump casing component 54 is fixedly connected to the outside of the sealing component 53.

[0032] The pump housing assembly 54 includes two springs 541. The lower ends of the two springs 541 are fixedly connected to the upper end of the base plate 1. The upper ends of the two springs 541 are fixedly connected to the housing 542. The upper end of the housing 542 is provided with an outlet 543. The front end of the housing 542 is provided with an inlet 544. The rear end of the housing 542 is fixedly connected to a connecting bracket 545. The rear end of the connecting bracket 545 is fixedly connected to the front end of the sealing assembly 53.

[0033] The sealing assembly 53 includes a positioning tube 531, the outer surface of which is fixedly connected to the inner surface of the housing 542, the outer surface of which is fixedly connected to the inner surface of the connecting frame 545, a rotating ring 538 fixedly connected to the inner cavity of the positioning tube 531, a pump shaft 535 rotatably connected to the inner surface of the rotating ring 538, the rear end of the pump shaft 535 fixedly connected to the front end of the pump body 52, a rotating component 534 rotatably connected to the outer surface of the pump shaft 535, a reinforcing tube 533 fixedly connected to the inner surface of the rotating component 534 by bolts, a pressure cap 532 fixedly connected to the inner cavity of the reinforcing tube 533 by bolts, a sealing ring 536 is sleeved on the outer surface of the pressure cap 532, a sealing ring 537 is sleeved on the outer surface of the reinforcing tube 533, and a sealing component 539 is fixedly connected to the outer surface of the pump shaft 535.

[0034] The sealing element 539 includes a bushing 5391, the inner surface of which is fixedly connected to the outer surface of the pump shaft 535. A bushing seal ring 5392 is provided inside the bushing 5391. A positioning ring 5393 is fixedly connected to the outer surface of the bushing 5391. Several springs 5394 are fixedly connected to the front end of the positioning ring 5393. A push ring is fixedly connected to the front end of the springs 5394. A rotating ring 5399 is fixedly connected to the outer surface of the bushing 5391. The rear end of 5399 is in close contact with the front end of the push ring. The inner surface of the moving ring 5399 is provided with a moving ring seal 5396. The outer surface of the moving ring 5399 is rotatably connected to a connecting sleeve 5395. The inner cavity of the connecting sleeve 5395 is fixedly connected to the inner surface of the pressure cover 532 by bolts. The outer surface of the bushing 5391 is rotatably connected to a stationary ring 5397. The outer surface of the stationary ring 5397 is in close contact with the inner surface of the pressure cover 532. The outer surface of the stationary ring 5397 is fitted with a stationary ring seal 5398.

[0035] In this embodiment of the invention, the stationary ring 5397 is fixed by the pressure cap 532 and the connecting sleeve 5395. When the motor 3 drives the split-case pump, the rotating ring 5399 and the stationary ring 5397 form a sealing end face perpendicular to the pump shaft 535. Under the combined action of the elastic force of the spring 5394 and the liquid pressure, they fit tightly together. When the pump shaft 535 rotates at high speed, a liquid film is formed on the contact surface between the rotating ring 5399 and the stationary ring 5397, which has both lubricating and sealing functions, and can also reduce wear. The liquid film acts as the main sealing layer, preventing axial leakage of the medium. Furthermore, a sealing ring 536 is fitted onto the outer surface of the gland 532, and a sealing ring 537 is fitted onto the outer surface of the reinforcing tube 533. These seals fill the gaps between the rotating ring and the shaft, and between the stationary ring 5397 and the gland 532, respectively, preventing radial leakage and further improving the sealing performance at the end face connection. The rotating ring 538 and the pump shaft 535 are rotatably connected, allowing the pump shaft 535 to maintain a stable seal even with slight radial displacement. During this process, the spring 5394 continuously applies axial elastic force, pushing the push ring to keep the rotating ring 5399 and the stationary ring 5397 in dynamic contact, automatically compensating for gaps caused by wear or vibration.

[0036] The housing 542 is connected to the base plate 1 by spring 541, which effectively absorbs the vibration and impact during pump operation and prevents the sealing end face from failing due to high-frequency vibration.

[0037] It should be noted that the specific installation method, circuit connection method and control method of the motor 3 in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0038] Working principle: When the split-case pump is needed, connect the inlet 544 to the water source, and then start the motor 3. The motor 3 drives the pump shaft 535 of the split-case pump to rotate. The pump shaft 535 drives the impeller to rotate at high speed, so that the liquid also rotates. Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and gains energy. It leaves the outer edge of the impeller at high speed and enters the casing 542, and is output from the outlet 543, thus realizing the conveying function of the split-case pump.

[0039] During the operation of the split-case pump, the rotating ring 5399 and the stationary ring 5397 form a sealing end face perpendicular to the pump shaft 535. Under the combined action of the elastic force of the spring 5394 and the liquid pressure, they are tightly fitted together. When the pump shaft 535 rotates at high speed, a liquid film is formed on the contact surface of the rotating ring 5399 and the stationary ring 539, which has both lubrication and sealing functions. The spring 5394 continuously applies axial elastic force, pushing the push ring to keep the rotating ring 5399 and the stationary ring 5397 dynamically fitted, automatically compensating for gaps caused by wear or vibration.

[0040] The housing 542 is connected to the base plate 1 by spring 541. When the split-case pump is running, spring 541 can effectively buffer the vibration and impact of the pump operation, avoid the sealing end face from failure due to high frequency vibration, and further ensure the sealing performance of the pump.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-flow split-case pump with good sealing performance, comprising a base plate (1), characterized in that: A pad (2) is fixedly connected to the upper end of the base plate (1), a motor (3) is fixedly connected to the upper end of the pad (2), a dustproof net (4) is fixedly connected to the outer surface of the motor (3), and a pump body structure (5) is fixedly connected to the output end of the motor (3) through a coupling.

2. The high-flow split-case pump with good sealing performance according to claim 1, characterized in that: The pump body structure (5) includes a pad (51), and a pump body (52) is fixedly connected to the upper end of the pad (51). The outer surface of the pump body (52) is fixedly connected to the output end of the motor (3) through a coupling. A sealing assembly (53) is fixedly connected to the front end of the pump body (52), and a pump casing assembly (54) is fixedly connected to the outside of the sealing assembly (53).

3. The high-flow split-case pump with good sealing performance according to claim 2, characterized in that: The pump housing assembly (54) includes two springs (541), the lower ends of which are fixedly connected to the upper end of the base plate (1), and the upper ends of the two springs (541) are fixedly connected to a housing (542). The upper end of the housing (542) is provided with an outlet (543), the front end of the housing (542) is provided with an inlet (544), and the rear end of the housing (542) is fixedly connected to a connecting frame (545). The rear end of the connecting frame (545) is fixedly connected to the front end of the sealing assembly (53).

4. The high-flow split-case pump with good sealing performance according to claim 3, characterized in that: The sealing assembly (53) includes a positioning tube (531), a rotating ring (538) is fixedly connected to the inner cavity of the positioning tube (531), a pump shaft (535) is rotatably connected to the inner surface of the rotating ring (538), a rotating component (534) is rotatably connected to the outer surface of the pump shaft (535), a reinforcing tube (533) is fixedly connected to the inner surface of the rotating component (534) by bolts, a pressure cap (532) is fixedly connected to the inner cavity of the reinforcing tube (533) by bolts, a sealing ring one (536) is sleeved on the outer surface of the pressure cap (532), a sealing ring two (537) is sleeved on the outer surface of the reinforcing tube (533), and a sealing component (539) is fixedly connected to the outer surface of the pump shaft (535).

5. The high-flow split-case pump with good sealing performance according to claim 4, characterized in that: The sealing element (539) includes a bushing (5391), a bushing sealing ring (5392) is provided in the inner cavity of the bushing (5391), a positioning ring (5393) is fixedly connected to the outer surface of the bushing (5391), a plurality of springs (5394) are fixedly connected to the front end of the positioning ring (5393), a push ring is fixedly connected to the front end of the plurality of springs (5394), a moving ring (5399) is fixedly connected to the outer surface of the bushing (5391), the rear end of the moving ring (5399) is in close contact with the front end of the push ring, a moving ring sealing ring (5396) is provided on the inner surface of the moving ring (5399), a connecting sleeve (5395) is rotatably connected to the outer surface of the moving ring (5399), a stationary ring (5397) is rotatably connected to the outer surface of the bushing (5391), and a stationary ring sealing ring (5398) is sleeved on the outer surface of the stationary ring (5397).

6. The high-flow split-case pump with good sealing performance according to claim 4, characterized in that: The outer surface of the positioning tube (531) is fixedly connected to the inner surface of the housing (542), and the outer surface of the positioning tube (531) is fixedly connected to the inner surface of the connecting frame (545).

7. The high-flow split-case pump with good sealing performance according to claim 5, characterized in that: The inner cavity of the connecting sleeve (5395) is fixedly connected to the inner surface of the pressure cap (532) by bolts, and the outer surface of the stationary ring (5397) is in close contact with the inner surface of the pressure cap (532).

8. The high-flow split-case pump with good sealing performance according to claim 5, characterized in that: The inner surface of the bushing (5391) is fixedly connected to the outer surface of the pump shaft (535), and the rear end of the pump shaft (535) is fixedly connected to the front end of the pump body (52).

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