High-sealing-performance centrifugal pump convenient to maintain

Abstract

The invention relates to the technical field of pump maintenance, in particular to a high-sealing centrifugal pump convenient to maintain, which comprises a base, a servo motor, a pump shell and the like, a servo motor is detachably connected to the base; a pump shell is detachably connected to the base. The pump shell is provided with a water inlet; the pump shell is provided with a water outlet; a water pumping space is arranged in the pump shell. According to the device, a worker pulls up the rubber plug, the rotating ring is rotated by 90 degrees anticlockwise with hands on the basis of looking from front to back, so that the connector and the rubber plug are driven to rotate by 90 degrees anticlockwise, the maintenance opening is exposed, and the worker can penetrate through the maintenance opening to maintain the sealing shell and the water collector; the pump shell does not need to be disassembled for maintenance, so that the maintenance efficiency of the centrifugal pump is improved; the air pump is controlled to blow air, so that air flow enters the cavity along the ventilation pipe, whether the cavity leaks air or not is detected, and the sealing performance is rapidly detected.

Description

Technical Field

[0001] The invention relates to the technical field of pump maintenance, and in particular to a high-sealing centrifugal pump that is easy to maintain. Background Art

[0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller.

[0003] In the process of pumping pond water by centrifugal pump, the pumped water contains suspended impurities such as mud and algae. The suspended impurities such as mud and algae in the pond water are easy to adhere to the impeller during the use of the centrifugal pump. Therefore, the centrifugal pump needs to be maintained and cleaned daily. The maintenance work includes cleaning the impeller and adding lubricating oil. During the daily maintenance of the centrifugal pump, the pump casing of the centrifugal pump needs to be disassembled to expose the rotating shaft and impeller in the pump casing. Only then can the rotating shaft and impeller be maintained. After the maintenance is completed, the pump casing is installed back into the centrifugal pump. In this process, the pump casing and the centrifugal pump are usually connected by a large number of bolts, which makes the above-mentioned method of disassembling the pump casing for cleaning too troublesome, and the maintenance efficiency is extremely low and inconvenient. Summary of the invention

[0004] In order to overcome the shortcomings of being too troublesome to disassemble the pump casing for cleaning, extremely low maintenance efficiency and inconvenience, the present invention provides a high-sealing centrifugal pump that is easy to maintain.

[0005] The technical solution is: a high-sealing centrifugal pump that is easy to maintain, including a base, a servo motor, a pump casing, a sealing casing, a rotating shaft, an impeller, a dynamic sealing gasket and a static sealing gasket; the base is detachably connected to the servo motor; the base is detachably connected to the pump casing; the pump casing is provided with a water inlet; the pump casing is provided with a water outlet; a water pumping space is provided in the pump casing; the pump casing is connected to a sealing casing; the output end of the servo motor is fixedly connected to the rotating shaft; the rotating shaft passes through the pump casing and the sealing casing; the rotating shaft has an impeller, and the impeller is located in the water pumping space; a dynamic sealing gasket is provided at the penetration point between the rotating shaft and the pump casing; a static sealing gasket is provided at the penetration point between the rotating shaft and the sealing casing; it also includes a swivel, a connector and a rubber plug; a maintenance port is provided on the pump casing; the maintenance port is connected to the water pumping space; a swivel is rotatably connected to the front side of the pump casing; a connector is fixedly connected to the swivel; a rubber plug for closing the maintenance port is slidably connected to the connector.

[0006] As a further preferred scheme, it also includes a water collector; a plurality of through grooves are opened on the impeller, and the through grooves are opposite to the roots of the blades on the impeller; the rear side of the impeller is detachably connected with a water collector; the rotating shaft passes through the water collector; a water collection space is formed between the water collector and the impeller; the through grooves are connected to the water collection space; a plurality of square tubes are arranged on the water collector, and the square tubes are connected to the water collection space.

[0007] As a further preferred solution, it also includes a ventilation pipe; a cavity is set between the sealing shell and the pump shell; the rear side of the pump shell is connected to the ventilation pipe; and the ventilation pipe is connected to the cavity.

[0008] As a further preferred solution, the ventilation pipe can be used as an oil pipeline.

[0009] As a further preferred solution, an oil-blocking ring is also included; the sealing shell is fixedly connected with the oil-blocking ring, and the oil-blocking ring is located below the dynamic sealing pad and the static sealing pad.

[0010] As a further preferred solution, a handle is provided on the rubber stopper.

[0011] As a further preferred solution, the water collector is arranged with a rearward protrusion in the middle.

[0012] As a further preferred solution, the rear side of the through slot is configured to be tapered.

[0013] As a further preferred solution, a plurality of protrusions are provided on the rotating ring.

[0014] As a further preferred solution, a cleaning rod is also included; the front side of the pump housing is connected with the cleaning rod.

[0015] Beneficial effects: The present invention realizes that by allowing the staff to pull up the rubber plug, based on the view from the front to the back, the swivel is manually rotated 90 degrees counterclockwise, thereby driving the connector and the rubber plug to rotate 90 degrees counterclockwise to expose the maintenance port, so that the staff can maintain the sealing shell and the water collector through the maintenance port without disassembling the pump shell for maintenance, thereby improving the maintenance efficiency of the centrifugal pump; By controlling the air pump to blow air, the airflow enters the cavity along the ventilation pipe, and then detects whether the cavity is leaking, so as to quickly detect the sealing shell; The impurities on the rotating shaft and the impeller are cleaned by the cleaning rod to avoid the staff forgetting to bring the cleaning tools, resulting in the impurities on the rotating shaft and the impeller being unable to be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a high-sealing centrifugal pump that is easy to maintain according to the present invention; Figure 2 It is a schematic diagram of the rotating state of the swivel, connector and rubber plug assembly of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the pump casing, the sealing casing and the impeller combination of the present invention, wherein the pump casing is treated as a cross-section; Figure 4 It is a schematic diagram of the three-dimensional structure of the pump casing, sealing casing, water collector, rotating shaft and impeller combination of the present invention, wherein the pump casing, sealing casing and impeller are cross-sectionally processed; Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing shell, static sealing gasket and oil blocking ring combination of the present invention; Figure 6 It is a side view of the pump casing, sealing casing, water collector, rotating shaft and impeller assembly of the present invention, wherein the pump casing, sealing casing, water collector and impeller are cross-sectionally processed.

[0017] Among them: 1-base, 2-servo motor, 3-pump housing, 3001-water inlet, 3002-water outlet, 3003-maintenance port, 3004-pump water space, 4-sealing shell, 4001-cavity, 5-water collector, 5001-water collecting space, 5002-square tube, 6-rotating shaft, 7-impeller, 7001-through groove, 8-dynamic sealing gasket, 9-static sealing gasket, 201-ventilation pipe, 202-oil blocking ring, 301-swivel, 30101-protrusion, 302-connector, 303-rubber plug, 401-cleaning rod. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0019] Example 1 like Figure 1-Figure 6 As shown, a high-sealing centrifugal pump that is easy to maintain includes a base 1, a servo motor 2, a pump casing 3, a sealing casing 4, a rotating shaft 6, an impeller 7, a dynamic sealing gasket 8 and a static sealing gasket 9; the base 1 is detachably connected with the servo motor 2; the base 1 is detachably connected with the pump casing 3; a water inlet 3001 is arranged on the front side of the pump casing 3; a water outlet 3002 is arranged on the upper side of the pump casing 3; a water pumping space 3004 is arranged in the pump casing 3; the sealing casing 4 is connected to the pump casing 3; the output end of the servo motor 2 is fixedly connected with the rotating shaft 6; the rotating shaft 6 passes through the pump casing 3 and the sealing casing 4; the rotating shaft 6 is fixedly connected with the impeller 7, and the impeller 7 is located in the water pumping space 3004; a dynamic sealing gasket 8 is arranged at the penetration point of the rotating shaft 6 and the pump casing 3; a static sealing gasket 9 is arranged at the penetration point of the rotating shaft 6 and the sealing casing 4; It also includes a swivel 301, a connector 302 and a rubber plug 303; a maintenance port 3003 is provided on the pump housing 3; the maintenance port 3003 is connected to the pump water space 3004; the swivel 301 is rotatably connected to the front side of the pump housing 3; the connector 302 is fixedly connected to the swivel 301; and the rubber plug 303 is slidably connected to the connector 302.

[0020] It also includes a water collector 5; a plurality of through grooves 7001 are opened on the impeller 7, and the through grooves 7001 are directly opposite to the roots of the blades on the impeller 7; the rear side of the impeller 7 is detachably connected with the water collector 5; the rotating shaft 6 passes through the water collector 5; a water collecting space 5001 is formed between the water collector 5 and the impeller 7; the through grooves 7001 are connected to the water collecting space 5001; a plurality of square tubes 5002 are arranged on the water collector 5, and the square tubes 5002 are connected to the water collecting space 5001.

[0021] It also includes a ventilation pipe 201 ; a cavity 4001 is provided between the sealing shell 4 and the pump shell 3 ; the rear side of the pump shell 3 is connected to the ventilation pipe 201 ; the ventilation pipe 201 is connected to the cavity 4001 .

[0022] The ventilation pipe 201 can be used as an oil pipeline.

[0023] It also includes an oil blocking ring 202 ; the sealing shell 4 is fixedly connected with the oil blocking ring 202 , and the oil blocking ring 202 is located below the dynamic sealing pad 8 and the static sealing pad 9 .

[0024] When the rotating shaft 6 and the impeller 7 need to be cleaned, the pumping work of the pond is stopped first, and then the servo motor 2 is controlled to drive the rotating shaft 6 to rotate counterclockwise based on the view from the front to the back, thereby driving the impeller 7 to rotate counterclockwise, thereby driving the residual water in the pumping space 3004 to rotate counterclockwise, so that the residual water in the pumping space 3004 flows out from the water outlet 3002, thereby emptying the residual water in the pumping space 3004, and then the staff pulls up the rubber plug 303 to move the rubber plug 303 upward, and then, as shown in FIG. Figure 2 As shown, based on the view from the front to the back, the staff manually rotates the swivel 301 counterclockwise by ninety degrees, thereby driving the connector 302 and the rubber plug 303 to rotate counterclockwise by ninety degrees, so that the maintenance port 3003 is exposed to the outside, so that the staff can maintain the impeller 7 through the maintenance port 3003 without disassembling the pump casing 3 for maintenance, thereby improving the maintenance efficiency of the centrifugal pump.

[0025] Afterwards, the staff puts the gas detector they carry with them into the pump water space 3004, connects the air pump to the ventilation pipe 201, and controls the air pump to blow air, so that the airflow enters the cavity 4001 along the ventilation pipe 201, thereby increasing the air pressure in the cavity 4001. At this time, if the gas detector detects gas leakage in the cavity 4001, it means that the connection between the pump housing 3 and the dynamic sealing gasket 8 is loose, and there is a problem with the sealing of the dynamic sealing gasket 8. The above method can be used to quickly detect the sealing of the dynamic sealing gasket 8. Afterwards, the staff controls the air pump to suck away the air in the cavity 4001, so that the pressure in the cavity 4001 returns to its original state.

[0026] After the maintenance of the impeller 7 is completed, the staff rotates the swivel 301 ninety degrees clockwise, with the view from the front to the back as the reference, thereby driving the connector 302 and the rubber plug 303 to rotate ninety degrees clockwise, so that the connector 302 and the rubber plug 303 cover the maintenance port 3003 again, and the maintenance port 3003 is isolated from the outside of the pump casing 3, so that the pumping water space 3004 is closed. Subsequently, the staff presses the rubber plug 303 downward to move the rubber plug 303 downward, so that the rubber plug 303 is plugged into the maintenance port 3003, thereby blocking the maintenance port 3003 and further sealing the pumping water space 3004, thereby preventing water from flowing out of the maintenance port 3003 during the use of the centrifugal pump and affecting the normal operation of the centrifugal pump.

[0027] Subsequently, the staff removes the air pump on the ventilation pipe 201, and then drips the lubricating oil into the cavity 4001 along the ventilation pipe 201, and allows the lubricating oil to fall downward to the position between the static sealing pad 9, the rear side of the dynamic sealing pad 8 and the rotating shaft 6, thereby achieving comprehensive lubrication between the rotating shaft 6, the dynamic sealing pad 8 and the static sealing pad 9, thereby achieving rapid lubrication of the dynamic sealing pad 8 and the static sealing pad 9, and no disassembly is required for lubrication operation. At the same time, the lubricating oil falling downward is blocked by the oil blocking ring 202, so that the lubricating oil stays on the oil blocking ring 202, so that when the rotating shaft 6 rotates, the lubricating oil on the oil blocking ring 202 can be in contact with the dynamic sealing pad 8 and the static sealing pad 9 for a long time, so that the lubricating oil can maintain lubrication of the dynamic sealing pad 8 and the static sealing pad 9 for a long time, thereby improving the lubricating effect of the lubricating oil on the dynamic sealing pad 8 and the static sealing pad 9.

[0028] Subsequently, after dripping lubricating oil on the dynamic sealing gasket 8 and the static sealing gasket 9, the staff inserts the water pipe into the water inlet 3001 and turns on the faucet to allow water to enter the water pumping space 3004 along the water pipe and the water inlet 3001. At the same time, based on the view from front to back, the servo motor 2 is controlled to drive the water collector 5, the rotating shaft 6 and the impeller 7 to rotate counterclockwise, so that the impeller 7 is impacted by water during the rotation, and the water hits the root of the blades on the impeller 7, so that the water drives the impurities adhered to the root of the impeller 7 to move backward, and after passing through the through groove 7001, it hits the water collecting space 5001, and then flows out from the square tube 5002 to the water pumping space 3004, and then flows out from the water outlet 3002 under the rotation of the impeller 7, thereby realizing the cleaning of the impurities adhered to the root of the impeller 7, avoiding the impurities adhered to the root of the impeller 7 being difficult to clean manually, resulting in the impurities adhered to the root of the impeller 7 always existing, affecting the maintenance and cleaning of the impeller 7.

[0029] A handle is provided on the rubber stopper 303 to facilitate manual pressing of the rubber stopper 303 downwards.

[0030] The water collector 5 is arranged with a rearward bulge in the middle, which increases the volume of the water collecting space 5001 and facilitates the entry of water and impurities.

[0031] The rear side of the through slot 7001 is configured with a narrow opening, which speeds up the flow of water passing through the through slot 7001 and makes it easier for impurities to pass through the through slot 7001.

[0032] A plurality of protrusions 30101 are provided on the rotating ring 301 , which are used to increase the roughness of the surface of the rotating ring 301 , thereby increasing the friction between the hands of the staff and the rotating ring 301 , and preventing the hands of the staff and the rotating ring 301 from slipping.

[0033] Example 2 On the basis of Example 1, Figure 1-Figure 3 As shown, a cleaning rod 401 is also included; the cleaning rod 401 is connected to the right front part of the pump casing 3; during the maintenance of the centrifugal pump, the staff can take out the cleaning rod 401 and use the cleaning rod 401 to clean the impurities on the rotating shaft 6 and the impeller 7, so as to avoid the staff forgetting to bring the cleaning tools, resulting in the impurities on the rotating shaft 6 and the impeller 7 cannot be cleaned.

[0034] 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifugal pump with high sealing performance that is easy to maintain, comprising a base (1), a servo motor (2), a pump casing (3), a sealing casing (4), a rotating shaft (6), an impeller (7), a dynamic sealing gasket (8) and a static sealing gasket (9); the base (1) is detachably connected to the servo motor (2); the base (1) is detachably connected to the pump casing (3); the pump casing (3) is provided with a water inlet (3001); the pump casing (3) is provided with a water outlet (3002); the pump casing (3) is provided with a A pumping space (3004) is provided; a sealing shell (4) is connected to the pump housing (3); a rotating shaft (6) is fixedly connected to the output end of the servo motor (2); the rotating shaft (6) passes through the pump housing (3) and the sealing shell (4); the rotating shaft (6) has an impeller (7), and the impeller (7) is located in the pumping space (3004); a dynamic sealing gasket (8) is provided at the penetration point between the rotating shaft (6) and the pump housing (3); a static sealing gasket (9) is provided at the penetration point between the rotating shaft (6) and the sealing shell (4); the characteristics are: The pump housing (3) further comprises a swivel (301), a connector (302) and a rubber plug (303); a maintenance port (3003) is provided on the pump housing (3); the maintenance port (3003) is in communication with the pump water space (3004); a swivel (301) is rotatably connected to the front side of the pump housing (3); a connector (302) is fixedly connected to the swivel (301); and a rubber plug (303) for closing the maintenance port (3003) is slidably connected to the connector (302).

2. A centrifugal pump with high sealing performance that is easy to maintain according to claim 1, characterized in that: The invention also comprises a water collector (5); a plurality of through grooves (7001) are provided on the impeller (7), and the through grooves (7001) are directly opposite to the roots of the blades on the impeller (7); the rear side of the impeller (7) is detachably connected to the water collector (5); the rotating shaft (6) passes through the water collector (5); a water collection space (5001) is formed between the water collector (5) and the impeller (7); the through grooves (7001) are in communication with the water collection space (5001); and a plurality of square tubes (5002) are provided on the water collector (5), and the square tubes (5002) are in communication with the water collection space (5001).

3. The centrifugal pump with high sealing performance and easy maintenance according to claim 1, characterized in that: It also includes a ventilation pipe (201); a cavity (4001) is provided between the sealing shell (4) and the pump shell (3); the rear side of the pump shell (3) is connected to the ventilation pipe (201); and the ventilation pipe (201) is connected to the cavity (4001).

4. A centrifugal pump with high sealing performance that is easy to maintain according to claim 3, characterized in that: The ventilation pipe (201) can be used as an oil delivery pipe.

5. The high-sealing centrifugal pump that is easy to maintain according to claim 1 is characterized in that: It also includes an oil-blocking ring (202); the sealing shell (4) is fixedly connected with the oil-blocking ring (202), and the oil-blocking ring (202) is located below the dynamic sealing gasket (8) and the static sealing gasket (9).

6. The centrifugal pump with high sealing performance and easy maintenance according to claim 1, characterized in that: A handle is provided on the rubber stopper (303).

7. The high-sealing centrifugal pump that is easy to maintain according to claim 2, characterized in that: The water collector (5) is arranged with its middle portion convexly facing backwards.

8. The centrifugal pump with high sealing performance and easy maintenance according to claim 2, characterized in that: The rear side of the through slot (7001) is configured to be tapered.

9. The centrifugal pump with high sealing performance and easy maintenance according to claim 1, characterized in that: A plurality of protrusions (30101) are provided on the rotating ring (301).

10. The centrifugal pump with high sealing performance and easy maintenance according to claim 3, characterized in that: It also includes a cleaning rod (401); the front side of the pump housing (3) is connected to the cleaning rod (401).

Images