Centrifugal pump convenient to clean

Abstract

The utility model discloses a centrifugal pump convenient to clean, which comprises a base, a pump body arranged at the top of the base, a water inlet flange arranged at the water inlet end of the pump body, and an isolation assembly comprising a rear cover arranged at the water inlet end of the water inlet flange, a front cover arranged at the water inlet end of the rear cover, and a filtering part arranged in an inner cavity of the front cover, a fixing part is arranged at the joint of the front cover and the rear cover; the water receiving assembly is used for connecting the water suction pipeline with the rear cover, and the water receiving assembly comprises a connecting flange; the isolation assembly is arranged at the water inlet end of the pump body, the front cover and the rear cover are arranged in the isolation assembly, the rear cover is fixed to the water inlet flange, the front cover is connected with the rear cover through the fixing part, the filtering parts are arranged in the inner cavities of the opposite sides of the front cover and the rear cover, and fine stones and other impurities in inlet water are intercepted through the filtering parts; and the detachable filtering part is convenient for maintenance personnel to disassemble, clean and maintain the water pump.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump which is easy to clean. Background Art

[0002] A centrifugal pump is a common type of pumping equipment. It draws liquid from the inlet through the rotation of the impeller, and then pushes the liquid to the outlet through the centrifugal force of the impeller. Centrifugal pumps are widely used in various industrial, agricultural and daily life fields, such as water supply, drainage, chemical industry, petroleum, electricity, etc.

[0003] The water inlet end of the centrifugal pump is generally directly connected to the suction pipe. The water inlet end of the suction pipe is provided with a grille to prevent aquatic plants and debris from entering the pump body and hindering the rotation of the impeller. However, it cannot intercept debris such as fine stones, causing the stones to enter the pump body with the water flow and collide with the impeller, causing damage to the impeller surface. The existing preventive measure is to provide a secondary interception net at the connection between the water inlet end of the water pump and the suction pipe. The net frame of the interception net is fixed by multiple screws. Since the screws are in direct contact with the water flow, they are severely rusted after long-term use and are difficult to disassemble, resulting in time-consuming disassembly and cleaning of the interception net by operation and maintenance personnel. Therefore, in order to solve this problem, a new type of centrifugal pump that is easy to clean is needed. Utility Model Content

[0004] The purpose of the present utility model is to provide a centrifugal pump that is easy to clean, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a centrifugal pump that is easy to clean, comprising a base, a pump body disposed on the top of the base, a water inlet flange disposed at the water inlet end of the pump body, and further comprising:

[0006] An isolation assembly is used to block water debris from entering the pump body. The isolation assembly includes a rear cover provided at the water inlet end of the water inlet flange. The water inlet end of the rear cover is provided with a front cover. The inner cavity of the front cover is provided with a filter portion for blocking debris. A fixing portion is provided at the connection between the front cover and the rear cover.

[0007] A water receiving assembly is used to connect the water suction pipeline to the rear cover, and the water receiving assembly includes a connecting flange.

[0008] Preferably, the filter portion includes a fixed ring arranged on the inner wall of the front cover, a movable ring is provided on one side of the fixed ring close to the connecting flange, a filter screen is provided in the middle of the movable ring, and fasteners are symmetrically provided at the connection between the fixed ring and the movable ring.

[0009] Preferably, the fastening member includes a shifting bar arranged on the side of the fixed ring, and the side of the movable ring is provided with an L-shaped locking hole for the shifting bar to be inserted and engaged.

[0010] Preferably, a support ring is provided on the inner wall of the rear cover, and the support ring is used to assist in supporting the movable ring.

[0011] Preferably, the fixing portion includes a tightening bolt, the ends of which are sequentially inserted and connected to the sides of the front cover and the rear cover, and a tightening nut is provided on the outside of the tightening bolt and on the side of the front cover.

[0012] Preferably, water-blocking rings are provided on opposite sides of the front cover and the rear cover, and the ends of the tightening bolts are inserted and connected to the sides of the water-blocking rings.

[0013] Preferably, connecting bolts are symmetrically inserted and connected to the sides of the water inlet flange, and the connecting bolts are used to fix the water inlet flange and the front cover.

[0014] Preferably, the water outlet end of the pump body is provided with a water outlet flange, and the water outlet flange is used to connect and fix the water outlet pipeline to the pump body.

[0015] The technical effects and advantages of this utility model are:

[0016] The utility model provides an isolation assembly at the water inlet end of the pump body, wherein a front cover and a rear cover are provided in the isolation assembly, the rear cover is fixed to the water inlet flange, the front cover is connected to the rear cover by a fixing portion, and a filter portion is provided in the inner cavity on the opposite sides of the front cover and the rear cover, so that fine stones and other debris in the incoming water are intercepted by the filter portion to prevent them from entering the pump body and damaging the impeller surface, wherein the detachable filter portion is convenient for maintenance personnel to disassemble, clean and maintain it. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the schematic structural diagrams of the entire utility model.

[0018] Figure 2 This is the second schematic diagram of the overall structure of the utility model.

[0019] Figure 3 It is a cross-sectional view of the isolation component of the present invention.

[0020] Figure 4 For this utility model Figure 3 A magnified view of the structure at point A.

[0021] Figure 5 It is a structural diagram of the movable ring of the utility model.

[0022] In the figure: 1. Base; 2. Pump body; 201. Water inlet flange; 2011. Connecting bolt; 202. Water outlet flange; 3. Isolation assembly; 301. Front cover; 302. Rear cover; 303. Fixing ring; 3031. Dial bar; 304. Movable ring; 3041. Filter screen; 3042. L-shaped locking hole; 305. Support ring; 306. Water blocking ring; 307. Tightening bolt; 3071. Tightening nut; 4. Connecting flange. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides Figure 1-5 The centrifugal pump shown is easy to clean and includes a base 1, a pump body 2 is provided on the top of the base 1, a water inlet flange 201 is provided at the water inlet end of the pump body 2, a water outlet flange 202 is provided at the water outlet end of the pump body 2, and further includes an isolation component 3 and a water receiving component;

[0025] It should be noted that the base 1 and the pump body 2 are fixed with bolts, the outlet flange 202 is used to connect and fix the outlet pipe to the pump body 2, the outlet flange 202 is welded and fixed to the water outlet end of the pump body 2, and the inlet flange 201 is welded and fixed to the water inlet end of the pump body 2;

[0026] Specifically, the isolation assembly 3 is used to block water debris from entering the pump body 2. The isolation assembly 3 includes a rear cover 302 provided at the water inlet end of the water inlet flange 201. The water inlet end of the rear cover 302 is provided with a front cover 301.

[0027] It should be noted that the side of the water inlet flange 201 is symmetrically connected with connecting bolts 2011, and the connecting bolts 2011 are used to fix the water inlet flange 201 and the front cover 301. The side of the front cover 301 is provided with threaded holes for the connecting bolts 2011 to be inserted.

[0028] Specifically, a fixing portion is provided at the connection between the front cover 301 and the rear cover 302;

[0029] It should be noted that the fixing portion includes a tightening bolt 307, the ends of which are sequentially inserted and connected to the sides of the front cover 301 and the rear cover 302, and a tightening nut 3071 is provided on the outside of the tightening bolt 307 and on the side of the front cover 301;

[0030] Specifically, through holes for tightening bolts 307 are provided on the sides of the front cover 301 and the rear cover 302. Water-blocking rings 306 are provided on the opposite sides of the front cover 301 and the rear cover 302. The ends of the tightening bolts 307 are inserted and connected to the sides of the water-blocking rings 306. The water-blocking rings 306 are used to prevent water leakage from the front cover 301 and the rear cover 302.

[0031] The inner cavity of the front cover 301 is provided with a filter portion for blocking debris;

[0032] Specifically, the filter unit includes a fixed ring 303 provided on the inner wall of the front cover 301, a movable ring 304 is provided on one side of the fixed ring 303 close to the connecting flange 4, and a filter screen 3041 is provided in the middle of the movable ring 304;

[0033] It should be noted that the fixed ring 303 is fixed to the inner wall of the front cover 301 by glue, the filter 3041 is a stainless steel mesh with a filtration radius of 1 mm, and the filter 3041 is fixed to the middle of the movable ring 304 by welding;

[0034] Fastening pieces are symmetrically provided at the connection between the fixed ring 303 and the movable ring 304;

[0035] Specifically, the fastening member includes a shift bar 3031 provided on the side of the fixed ring 303, and an L-shaped locking hole 3042 is provided on the side of the movable ring 304 for the shift bar 3031 to be inserted and engaged.

[0036] It should be noted that the selector bar 3031 is welded to the fixed ring 303. The selector bar 3031 is inserted into the L-shaped locking hole 3042. The protrusion on the side of the selector bar 3031 engages with the inner wall of the L-shaped locking hole 3042, thereby limiting the fixed ring 303 and the movable ring 304. When disassembling, the selector bar 3031 is directly pressed through the L-shaped locking hole 3042 to unlock the fixed ring 303 and the movable ring 304. The fixed ring 303, the movable ring 304 and the selector bar 3031 are all made of stainless steel to avoid rust caused by long-term contact with water.

[0037] The inner wall of the rear cover 302 is provided with a support ring 305, which is used to assist in supporting the movable ring 304. The support ring 305 is made of rubber and provides flexible support for the movable ring 304.

[0038] Specifically, the water receiving assembly is used to connect the water suction pipeline and the rear cover 302. The water receiving assembly includes a connecting flange 4. The rear cover 302 and the connecting flange 4 are fixed by welding. The connecting flange 4 is used to connect with the water suction pipeline.

[0039] During actual use, an isolation component 3 is provided at the water inlet end of the pump body 2, a front cover 301 and a rear cover 302 are provided in the isolation component 3, the rear cover 302 is fixed to the water inlet flange 201, the front cover 301 is connected to the rear cover 302 by a fixing part, and a filter part is provided in the inner cavity on the opposite side of the front cover 301 and the rear cover 302. The filter screen 3041 in the filter part intercepts fine stones and other debris in the incoming water to prevent them from entering the pump body 2 and damaging the impeller surface. The fasteners at the connection between the fixed ring 303 and the movable ring 304 can be unlocked by pressing, avoiding the problem of easy rust of screws in the design of screw-fixed interception nets. The fasteners facilitate maintenance personnel to disassemble the fixed ring 303 and the movable ring 304, thereby cleaning and maintaining the filter screen 3041.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A centrifugal pump that is easy to clean, comprising a base (1), a pump body (2) disposed on the top of the base (1), a water inlet flange (201) disposed at the water inlet end of the pump body (2), and characterized in that: Also includes: An isolation assembly (3) is used to block water debris from entering the pump body (2), and the isolation assembly (3) comprises a rear cover (302) arranged at the water inlet end of the water inlet flange (201), a front cover (301) is provided at the water inlet end of the rear cover (302), an inner cavity of the front cover (301) is provided with a filter portion for blocking debris, and a fixing portion is provided at the connection between the front cover (301) and the rear cover (302); A water receiving assembly is used for connecting the water suction pipeline and the rear cover (302), and the water receiving assembly includes a connecting flange (4).

2. The centrifugal pump that is easy to clean according to claim 1, characterized in that: The filter portion comprises a fixed ring (303) arranged on the inner wall of the front cover (301); a movable ring (304) is arranged on one side of the fixed ring (303) close to the connecting flange (4); a filter screen (3041) is arranged in the middle of the movable ring (304); and fasteners are symmetrically arranged at the connection between the fixed ring (303) and the movable ring (304).

3. The centrifugal pump that is easy to clean according to claim 2, characterized in that: The fastening member comprises a shifting bar (3031) arranged on the side of the fixed ring (303), and an L-shaped locking hole (3042) for the shifting bar (3031) to be inserted and engaged is opened on the side of the movable ring (304).

4. The centrifugal pump that is easy to clean according to claim 3, characterized in that: The inner wall of the rear cover (302) is provided with a support ring (305), and the support ring (305) is used to assist in supporting the movable ring (304).

5. The centrifugal pump that is easy to clean according to claim 1, characterized in that: The fixing portion includes a tightening bolt (307), the ends of which are sequentially inserted and connected to the sides of the front cover (301) and the rear cover (302), and a tightening nut (3071) is provided on the outside of the tightening bolt (307) and on the side of the front cover (301).

6. The centrifugal pump easy to clean according to claim 5, characterized in that: Water blocking rings (306) are provided on opposite sides of the front cover (301) and the rear cover (302), and the ends of the tightening bolts (307) are inserted and connected to the sides of the water blocking rings (306).

7. The centrifugal pump that is easy to clean according to claim 1, characterized in that: Connecting bolts (2011) are symmetrically inserted and connected to the sides of the water inlet flange (201), and the connecting bolts (2011) are used to fix the water inlet flange (201) and the front cover (301).

8. The centrifugal pump that is easy to clean according to claim 1, characterized in that: The water outlet end of the pump body (2) is provided with a water outlet flange (202), and the water outlet flange (202) is used for connecting and fixing the water outlet pipeline to the pump body (2).

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