centrifugal pump

Abstract

A centrifugal pump includes a pump body and an inlet connector. The pump body has an inlet end and an outlet end. The inlet connector is disposed on the inlet end of the pump body. The inlet connector is characterized by having at least an outlet port, an inlet port, and a first mounting port that can be opened and closed. The outlet port is connected to the inlet port of the pump body. The first mounting port contains a filter assembly and a filter cover for opening and closing the first mounting port. After long-term use, the filter cover is opened, the filter assembly is removed, and debris and impurities are removed. Afterward, the clean filter assembly is inserted into the first mounting port and sealed with the filter cover. The entire assembly is easy to disassemble and clean.

Description

Technical Field

[0001] This utility model relates to a water pump, and more particularly to a centrifugal pump. Background Technology

[0002] Currently, centrifugal pumps basically consist of a pump body and an inlet connector located at the inlet port of the pump body. To reduce the accumulation of debris and impurities in the pump body, filters are often installed to remove them, thereby extending the service life of the centrifugal pump. Relevant literature can be found in Chinese Utility Model Patent No. ZL201922004715.5, "A Stainless Steel Multistage Centrifugal Pump" (Authorization Announcement No. CN211082362U); and also in Chinese Utility Model Patent No. ZL202021557851.3, "A Centrifugal Pump with Improved Cavitation Resistance" (Authorization Announcement No. CN213144888U).

[0003] While installing filters improves the lifespan of centrifugal pumps, it generally has the following drawbacks: First, filter installation and removal are relatively cumbersome; second, cleaning is difficult once debris and impurities accumulate to a certain level. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a centrifugal pump with convenient filter installation and disassembly, in view of the above-mentioned technical status.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a centrifugal pump, comprising...

[0006] The pump body has an inlet end and an outlet end; and

[0007] The water inlet connector is located on the water inlet end of the aforementioned pump body.

[0008] The water inlet connector is characterized by having at least an outlet port, an inlet port, and a first installation port that can be opened and closed. The aforementioned outlet port is connected to the inlet port of the pump body, and the aforementioned first installation port is provided with a filter screen assembly and a filter screen cover for opening and closing the first installation port.

[0009] Preferably, the water outlet port and the water inlet port of the water inlet connector are connected in a straight line, and the central axis of the first mounting port is perpendicular to the central axis of the water outlet port of the water inlet connector.

[0010] Furthermore, the water inlet connector also has a second installation port, which is equipped with a one-way valve assembly to prevent backflow of water and a valve cover for opening and closing the second installation port. Water flows in from the water inlet port, passes through the filter assembly, and then enters the water outlet port after passing through the one-way valve assembly.

[0011] Preferably, the central axis of the second mounting port is aligned with the central axis of the first mounting port.

[0012] Preferably, the filter assembly includes

[0013] The filter screen is cylindrical and axially hollow; and

[0014] The connecting sleeve consists of two parts located at both ends of the aforementioned filter screen.

[0015] The inlet connector has a stop surface that limits the connection sleeve. This allows the filter assembly to be positioned at the first mounting port.

[0016] Furthermore, the pump body has a water inlet, and the water inlet is equipped with a water inlet cover that can be opened and closed.

[0017] Compared with the prior art, the advantages of this utility model are: after long-term use, the filter screen cover can be opened, the filter screen assembly can be taken out, and garbage and impurities can be removed. After that, the clean filter screen assembly can be inserted into the first installation port and sealed with the filter screen cover. The whole assembly and disassembly are convenient and cleaning is easy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0019] Figure 2 for Figure 1 The exploded diagram.

[0020] Figure 3 for Figure 2 A magnified view of the inlet connector from another angle.

[0021] Figure 4 for Figure 2 Exploded view of the water inlet connector.

[0022] Figure 5 This is an enlarged sectional view of the water inlet connector.

[0023] Figure 6 This is a cross-sectional view of the water inlet connector from another perspective. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 and Figure 2 As shown, the centrifugal pump in this embodiment includes a pump body 6 and a water inlet connector 1. The pump body 6 has a water inlet end 61, a water outlet end 62, and a water inlet 63. The water inlet 63 is equipped with a water inlet cover 7 that can be opened and closed. The water inlet connector 1 is located on the water inlet end 61 of the pump body 6. When using it for the first time, water can be added through the water inlet 63 to expel internal air.

[0026] like Figures 3-6 As shown, the inlet connector 1 in this embodiment has an outlet port 11, an inlet port 12, and a first mounting port 13 and a second mounting port 14 that can be opened and closed. The outlet port 11 is connected to the inlet port 12 of the pump body 6. The first mounting port 13 is provided with a filter screen assembly 2 and a filter screen cover 3 for opening and closing the first mounting port 13. The second mounting port 14 is provided with a one-way valve assembly 4 and a valve cover 5 for opening and closing the second mounting port 14. The one-way valve assembly prevents backflow of water, ensuring that the inlet pipe remains full of liquid after the centrifugal pump stops. When restarted, the inlet pressure will not decrease due to liquid loss, thus maintaining stable pressure within the pump body and protecting the normal operation of the pump.

[0027] The central axes of the outlet port 11 and the inlet port 12 of the inlet connector 1 are connected in a straight line. The central axis of the first mounting port 13 is perpendicular to the central axis of the outlet port 11 of the inlet connector 1. The central axis of the second mounting port 14 is connected in a straight line to the central axis of the first mounting port 13.

[0028] The filter assembly 2 in this embodiment includes a filter screen 21 and a connecting sleeve 22. The filter screen 21 is cylindrical and axially hollow; the connecting sleeve 22 consists of two sleeves located at the two ends of the filter screen 21.

[0029] After the filter assembly 2 is installed, the two connecting sleeves abut against the stop surface 15 of the filter cover and the water inlet connector 1, respectively.

[0030] like Figure 6 As shown, water enters from the inlet port 12, passes through the filter screen 21 assembly 2, and then enters the outlet port 11 via the one-way valve assembly 4.

[0031] Over time, debris will inevitably accumulate on the filter assembly. To remove this, open the filter cover, remove the filter assembly, and clean off the debris and impurities. Then, insert the clean filter assembly into the first installation port and seal it with the filter cover. The entire assembly is easy to disassemble and clean. Similarly, if debris accumulates on the one-way valve assembly, it is also easy to disassemble and clean.

Claims

1. A centrifugal pump, comprising The pump body (6) has an inlet end (61) and an outlet end (62); and The inlet connector (1) is located on the inlet end (61) of the aforementioned pump body (6). Its features The water inlet connector (1) has at least an outlet port (11), an inlet port (12) and a first installation port (13) that can be opened and closed. The outlet port (11) is connected to the inlet port (12) of the pump body (6). The first installation port (13) is provided with a filter assembly (2) and a filter cover (3) for opening and closing the first installation port (13).

2. The centrifugal pump according to claim 1, characterized in that... The water outlet port (11) and water inlet port (12) of the water inlet connector (1) are connected by a straight line, and the central axis of the first installation port (13) is perpendicular to the central axis of the water outlet port (11) of the water inlet connector (1).

3. The centrifugal pump according to claim 2, characterized in that... The water inlet connector (1) also has a second installation port (14), which is provided with a one-way valve assembly (4) to prevent backflow of water and a valve cover (5) for opening and closing the second installation port (14). Water enters from the water inlet port (12), passes through the filter screen (21) assembly (2), and then enters the water outlet port (11) after passing through the one-way valve assembly.

4. The centrifugal pump according to claim 3, characterized in that... The central axis of the second mounting port (14) is connected to the central axis of the first mounting port (13) in a straight line.

5. The centrifugal pump according to claim 1, characterized in that... The filter assembly (2) includes Filter screen (21), cylindrical and axially hollow; and The connecting sleeve (22) consists of two parts located at the two ends of the aforementioned filter screen (21).

6. The centrifugal pump according to claim 5, characterized in that... The water inlet connector (1) has a stop surface (15) that restricts the connection sleeve (22).

7. The centrifugal pump according to claim 1, characterized in that... The pump body (6) has a water inlet (63), and the water inlet (63) is provided with a water inlet cover (7) that can be opened and closed.

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