A centrifugal pump

Abstract

The utility model relates to centrifugal pump field discloses a centrifugal pump, including installation bottom plate, the installation bottom plate upper portion is installed with centrifugal pump body, the centrifugal pump body front portion is installed with filter assembly, the filter assembly includes front casing, the front casing fixedly connected with thread ring, the back of front casing is provided with rear casing, the rear casing is connected with thread ring threadedly, the filter screen is installed between the front casing and rear casing, the front portion of rear casing is provided with mounting groove, the filter screen is movably connected with mounting groove, the thread ring is abutted with filter screen. In the utility model, in the utility model, through being provided with filter assembly, filter screen and filter hole, can reach the effect that centrifugal pump filters away big granular solid and part insoluble impurity in the water inlet process, to protect the impeller, pump shell and so on composition of centrifugal pump to a certain extent, through being provided with sealing washer no.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pumps, and in particular to a centrifugal pump filtration device. Background Technology

[0002] A centrifugal pump is a rotary power pump that uses a rotating impeller to increase the velocity of fluid. It consists of an impeller, a pump casing, etc. It draws liquid in through centrifugal force and converts kinetic energy into pressure energy. It is one of the most commonly used fluid transport machines in process engineering.

[0003] Traditional centrifugal pump designs, prioritizing efficient fluid transport, often lack dedicated filtration mechanisms for large particles. This makes them highly susceptible to impeller wear, pipe blockage, and even equipment malfunction when fluids containing stones, hard impurities, or other large particles enter the pump. Even when some centrifugal pumps are equipped with simple filtration devices, these filters are often fixed and concealed. When a large amount of particulate matter adheres to the filter surface, operators must stop the machine and disassemble multiple components for cleaning, which is not only time-consuming and labor-intensive but also severely impacts production continuity. This makes them impractical and fails to meet the demands of modern industry for efficient equipment operation and maintenance. Therefore, a new centrifugal pump is proposed to address these issues. Utility Model Content

[0004] To address the aforementioned shortcomings, this invention provides a centrifugal pump designed to improve upon the shortcomings of existing centrifugal pump designs. Traditional centrifugal pumps, focused on efficient fluid transport, often lack dedicated filtration mechanisms for large particles. Some centrifugal pumps are equipped with simple filtration devices, but these filters are typically fixed and concealed, leading to inconvenience in cleaning and replacing them.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a centrifugal pump, including a mounting base plate, a centrifugal pump body mounted on the upper part of the mounting base plate, and a filter assembly mounted on the front part of the centrifugal pump body; the filter assembly includes a front housing, a threaded ring fixedly connected to the front housing, a rear housing provided at the rear of the front housing, the rear housing being threadedly connected to the threaded ring, a filter screen installed between the front housing and the rear housing, an installation groove provided at the front of the rear housing, the filter screen being movably connected to the installation groove, and the threaded ring abutting against the filter screen.

[0006] As a further description of the above technical solution:

[0007] The front housing has a second slot at the rear and the rear housing has a first slot at the front. The first and second slots are engaged with a first sealing ring.

[0008] As a further description of the above technical solution:

[0009] The filter screen has multiple filter holes in its middle section.

[0010] As a further description of the above technical solution:

[0011] A flange ring is installed at the rear of the rear housing.

[0012] As a further description of the above technical solution:

[0013] The centrifugal pump body is equipped with a second flange ring at the front. The front end of the second flange ring has a flange groove. The first flange ring and the second flange ring are connected by bolts. A second rubber ring is engaged inside the flange groove.

[0014] As a further description of the above technical solution:

[0015] A second rubber ring is engaged inside the flange slot.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, by setting up a filter assembly, filter screen and filter holes, the centrifugal pump can filter out large solid particles and some insoluble impurities during the water intake process, thereby protecting the impeller, pump casing and other components of the centrifugal pump to a certain extent. By setting up a No. 1 sealing ring and threaded ring, it is easy to disassemble and replace the filter screen.

[0018] 2. In this utility model, by setting a No. 1 sealing ring and a No. 2 rubber ring, the No. 1 sealing ring can make the entire centrifugal pump disassembly interface more tightly connected, and prevent liquid from overflowing in the interface gap during the liquid transportation process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a centrifugal pump proposed in this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram showing the centrifugal pump body and filter assembly of a centrifugal pump proposed in this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the front side of the filter assembly of a centrifugal pump proposed in this utility model after disassembly.

[0022] Figure 4 This is a three-dimensional structural diagram of the disassembled filter assembly of a centrifugal pump proposed in this utility model.

[0023] Legend:

[0024] 1. Mounting base plate; 2. Centrifugal pump body; 3. Filter assembly; 21. No. 2 flange ring; 22. Flange groove; 23. No. 2 rubber ring; 31. Filter screen; 311. Filter holes; 32. No. 1 sealing ring; 33. Rear housing; 331. No. 1 groove; 332. Mounting groove; 34. Front housing; 35. No. 1 flange ring; 341. No. 2 groove; 342. Threaded ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a centrifugal pump, including a mounting base plate 1 for fixing a centrifugal pump body 2. The centrifugal pump body 2 is mounted on the upper part of the mounting base plate 1. A filter assembly 3 is mounted on the front of the centrifugal pump body 2, which is used to filter larger impurities in the water to protect the internal structure of the centrifugal pump and extend its service life. The filter assembly 3 includes a front housing 34, a threaded ring 342 is fixedly connected to the front housing 34, and a rear housing 33 is provided at the rear of the front housing 34. The rear housing 33 is threadedly connected to the threaded ring 342. A filter screen 31 is installed between the front housing 34 and the rear housing 33. The filter screen 31 is clamped in the mounting groove 332 by tightening the threaded ring 342. The front of the rear housing 33 has a mounting groove 332 for fixing the filter screen 31. The filter screen 31 is movably connected to the mounting groove 332, and the threaded ring 342 abuts against the filter screen 31.

[0027] Reference Figure 2 - Figure 4 The front housing 34 has a second slot 341 at the rear and the rear housing 33 has a first slot 331 at the front. The first slot 331 and the second slot 341 are engaged with a first sealing ring 32. The first sealing ring 32 can make the seal between the front housing 34 and the rear housing 33 tighter, preventing liquid from overflowing from the gap between the front housing 34 and the rear housing 33. The filter screen 31 has multiple filter holes 311 in the middle. The filter holes 311 can filter out large solid particles and some insoluble impurities.

[0028] A first flange ring 35 is installed at the rear of the rear housing 33. A second flange ring 21 is installed at the front of the centrifugal pump body 2. The second flange ring 21 connects with the first flange ring 35 to connect the centrifugal pump body 2 and the filter assembly 3. A flange groove 22 is opened at the front end of the second flange ring 21. A second rubber ring 23 is placed in the flange groove 22. The first flange ring 35 and the second flange ring 21 are connected by bolts. The second rubber ring 23 is held in the flange groove 22. The second rubber ring 23 makes the connection between the second flange ring 21 and the first flange ring 35 more tight and prevents fluid from overflowing.

[0029] Working principle: When the centrifugal pump is running, the liquid enters the filter assembly 3 through the pipe inlet of the front housing 34. Large solid particles and some insoluble impurities are filtered out by the filter screen 31 in the filter assembly 3. The filtered liquid enters the centrifugal pump body 2. After the liquid fills the centrifugal pump body 2, it is transported to the outlet by the centrifugal force generated by the high-speed rotation of the impeller.

[0030] When cleaning and replacing the filter screen 31, unscrew the front housing 34 of the filter assembly 3. At this time, the threaded ring 342 loosens the filter screen 31 placed in the mounting groove 332. Take out the filter screen 31, clean the filter screen 31 and ensure that the filter holes 311 are not blocked by foreign objects or replace the filter screen 31. Then place the cleaned or new filter screen 31 on the mounting groove 332, align the front housing 34 of the filter assembly 3 with the mounting groove 332 and tighten it to abut against the filter screen 31.

[0031] When replacing the No. 1 sealing ring 32, unscrew the front housing 34 of the filter assembly 3. After unscrewing, the No. 1 sealing ring 32 can be removed from the slot 341 at the rear of the front housing 34 and the slot 331 at the front of the rear housing 33. After removing the No. 1 sealing ring 32 and replacing it with a new one, align the front housing 34 with the threaded ring 342 and screw it back into place.

[0032] When replacing the second rubber ring 23, remove the bolts and nuts connecting the first flange ring 35 and the second flange ring 21, separate the filter assembly 3 from the centrifugal pump body 2, remove the second rubber ring 23 placed in the flange slot 22 at the front end of the second flange ring 21, replace the second rubber ring 23, and then tighten the first flange ring 35 and the second flange ring 21 with bolts and nuts.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centrifugal pump, comprising a mounting base plate (1), characterized in that: A centrifugal pump body (2) is mounted on the upper part of the mounting base plate (1), and a filter assembly (3) is mounted on the front part of the centrifugal pump body (2). The filter assembly (3) includes a front housing (34), a threaded ring (342) is fixedly connected to the front housing (34), a rear housing (33) is provided at the rear of the front housing (34), the rear housing (33) is threadedly connected to the threaded ring (342), a filter screen (31) is installed between the front housing (34) and the rear housing (33), an installation groove (332) is opened at the front of the rear housing (33), the filter screen (31) is movably connected to the installation groove (332), and the threaded ring (342) abuts against the filter screen (31).

2. A centrifugal pump according to claim 1, characterized in that: The front housing (34) has a second slot (341) at the rear and the rear housing (33) has a first slot (331) at the front. The first slot (331) and the second slot (341) are connected together to a first sealing ring (32).

3. A centrifugal pump according to claim 1, characterized in that: The filter screen (31) has multiple filter holes (311) in the middle.

4. A centrifugal pump according to claim 1, characterized in that: A flange ring (35) is installed at the rear of the rear housing (33).

5. A centrifugal pump according to claim 4, characterized in that: The centrifugal pump body (2) is equipped with a second flange ring (21) at the front. The front end of the second flange ring (21) is provided with a flange groove (22). The first flange ring (35) and the second flange ring (21) are connected by bolts.

6. A centrifugal pump according to claim 5, characterized in that: The flange groove (22) is fitted with a No. 2 rubber ring (23).

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