Submerged slurry pump with shutdown automatic flushing device
By introducing a shutdown automatic flushing device into the liquid slurry pump, and automatically flushing and removing solid particles with check valves and solenoid valves, the problem of difficulty in starting or stuck after high concentration media or shutdown is solved, and higher equipment reliability and life are achieved.
Patent Information
- Application Number
- CN202421225459.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-31
AI Technical Summary
After the liquid slurry pump is transported with high concentration media or shut down for a long time, solid particles are prone to deposition, resulting in difficulty in starting the pump or stuck and unable to work normally.
A liquid slurry pump with automatic shutdown flushing device is designed. By setting a check valve and solenoid valve at the outlet of the pump, the outlet is automatically closed when the pump is shut down, cleaning water is introduced for flushing, and solid particles are removed to ensure that the pump does not get stuck when the second starts.
It effectively prevents the pump from being stuck, ensures that the slurry pump can be started smoothly after high concentration media or shutdown, extends the life of the pump and motor, and improves the reliability and practicality of the equipment.
Smart Images
Figure CN222668407U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of slurry pumps, in particular to a submerged slurry pump with an automatic flushing device when shut down. Background Art
[0002] Most submersible slurry pumps adopt a vertical cantilever sealless structure, and most pumps have a stirring wheel, which is determined by the characteristics of the pump conveying medium. In many cases, especially when conveying limestone desulfurization slurry or coal ash water, the slurry concentration will increase, or the pump will be shut down for a long time. Under this working condition, solid particles will be deposited at the suction port of the pump, or in the flow channel of the pump. When the pump is started again, even if the pump suction port is equipped with a stirring wheel, the medium cannot be completely stirred. The impeller and pump body of the pump are easily stuck and cannot be started, or it can be started but no liquid can be pumped out. In order to solve this kind of problem, it is necessary to design a submersible slurry pump with an automatic flushing device when shutting down. The utility model relates to the technical field of slurry pumps. With the development of society, the slurry pump industry has become more and more developed, and slurry pumps have been continuously improved to meet the needs of production. Utility Model Content
[0003] In order to overcome the situation that the slurry concentration increases when the slurry pump is used to transport limestone desulfurization slurry or fly ash water, or the pump is shut down for a long time, solid particles will be deposited at the suction port of the pump, or in the flow channel of the pump. When the pump is started again, even if the pump suction port is equipped with a stirring wheel, the medium cannot be completely stirred, and the impeller and pump body of the pump are easily stuck and cannot be started, or it can be started but no liquid can be pumped out, making it inconvenient to prevent sticking.
[0004] The technical solution of the utility model is: a submersible slurry pump with an automatic flushing device upon shutdown, comprising a shell, an auxiliary component, a mounting component, a stirring component, a connecting component and a control component; the auxiliary component is arranged on the side wall of the shell, the mounting component is arranged on the side wall of the auxiliary component, a driving component is arranged below the auxiliary component, a connecting component is arranged on the side wall of the driving component, and a control component with a control function is arranged on the side wall of the connecting component.
[0005] Preferably, when the pump is shut down, the pump outlet control component will automatically close, and the control cabinet control component will be powered on and turned on, so that external clean water will enter the pump connection component through this bypass. The upper control component has pressure, and the lower part is open, so the clean water will not flow upward and reach the pump body and impeller for flushing, flushing the solid particles out of the pump body. In this way, the pump will not get stuck when it is started again. The flushing time is the time when the control component is powered on and turned on, and the length of this time can be adjusted according to the on-site working conditions.
[0006] Preferably, the auxiliary component includes a driving motor, a motor seat and a bearing seat; the driving motor is arranged inside the shell, the motor seat is arranged on the side wall of the shell, and the bearing seat is arranged on the side wall of the shell; through the arrangement of the motor seat and the bearing seat, it can play a role of auxiliary installation, and starting the driving motor can achieve the rotation effect.
[0007] Preferably, the mounting assembly includes a mounting plate, mounting bolts and a fixing plate; a fixing plate is arranged on the side wall of the bearing seat, a mounting plate is arranged on one side of the fixing plate, and mounting bolts are arranged inside the fixing plate; the fixing plate and the mounting plate can be fixed by the mounting bolts, thereby achieving a fixed installation effect.
[0008] Preferably, the driving assembly includes a connecting pipe, a pump shaft and a guard plate; a connecting pipe is arranged below the bearing seat, a pump shaft is arranged inside the connecting pipe, and a guard plate is arranged on the side wall of the connecting pipe; the stirring assembly can be driven to rotate by the pump shaft, and a protective effect can be achieved by the guard plate.
[0009] Preferably, the driving assembly also includes an impeller, a stirring wheel and a pump body; the pump body is arranged below the guard plate, the impeller is arranged on the side wall of the pump shaft, and the stirring wheel is arranged at one end of the pump shaft; the pump shaft can drive the impeller to rotate, and the solid particles can be flushed out of the pump body by the impeller, and the pump shaft can drive the stirring wheel to rotate, and the medium can be mixed and stirred by the stirring wheel.
[0010] Preferably, the connecting assembly includes a connecting pipe, a connecting flange and a water outlet pipe; a connecting pipe is arranged on the side wall of the pump body, a connecting flange is arranged at one end of the connecting pipe, and a water outlet pipe is arranged on one side of the connecting flange; the connecting pipe and the water outlet pipe can be connected and fixed through the connecting flange, thereby achieving a tightening installation effect.
[0011] Preferably, the control component includes a check valve, a stop valve, a solenoid valve and a clean water pipeline; a clean water pipeline is arranged on the side wall of the water outlet pipe, a solenoid valve is arranged on the side wall of the clean water pipeline, a check valve is arranged on the side wall of the connecting pipe, and a stop valve is arranged on the side wall of the water outlet pipe; when the pump is shut down, the pump outlet check valve will automatically close, the control cabinet controls the solenoid valve to be energized, the solenoid valve is opened, and the opening time of the solenoid valve is controlled by a time relay, so that the external clean water enters the water outlet pipe of the pump through this bypass, the upper check valve has pressure, and the lower is open, the clean water will not flow upward, and then reach the pump body and impeller for flushing, flushing the solid particles out of the pump body, so that the pump will not be stuck when it is started for the second time, the flushing time is the time when the solenoid valve is energized and opened, and the length of this time can be adjusted according to the on-site working conditions, the clean water pipeline has a small diameter and a small amount of water, and will not flush the entire rotor to cause the impeller to loosen.
[0012] Beneficial effects of the utility model:
[0013] 1. Compared with the traditional slurry pump, when conveying limestone desulfurization slurry or coal ash water, the slurry concentration will increase, or the pump will be shut down for a long time. Solid particles will settle at the suction port of the pump or in the flow channel of the pump. When the pump is started again, even if the pump suction port is equipped with a stirring wheel, the medium cannot be completely stirred. The impeller and pump body of the pump are easy to get stuck and cannot be started, or the liquid cannot be pumped out even if it can be started, which makes it inconvenient to prevent the problem of getting stuck. The slurry pump is provided with a connection structure and a control structure. After adopting this structure, the slurry pump can adapt to the medium slurry with higher concentration, fully ensure the smooth secondary start of the slurry pump, effectively protect the pump and the motor, and prolong the service life of the whole machine. It has great practical value, so as to achieve efficient and practical effects.
[0014] 2. When the pump stops, the pump outlet check valve will automatically close, the control cabinet controls the solenoid valve to be energized, the solenoid valve opens, and the time relay is used to control the opening time of the solenoid valve. In this way, the external clean water enters the outlet pipe of the pump through this bypass. The check valve above has pressure, and the bottom is open. The clean water will not flow upwards and then reach the pump body and impeller for flushing, flushing the solid particles out of the pump body. In this way, there will be no jamming when the pump is started for the second time. The flushing time is the time when the solenoid valve is energized and opened. The length of this time can be adjusted according to the on-site working conditions, so as to achieve the effect of preventing jamming.
[0015] 3. After adopting this structure, the slurry pump can adapt to higher concentration of medium slurry, which can fully ensure the smooth secondary start of the slurry pump, effectively protect the pump and motor, and extend the life of the whole machine. It has great practical value, thus achieving efficient and practical effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 What is shown is a first stereoscopic structural schematic diagram of a submersible slurry pump with an automatic flushing device when shut down according to the utility model;
[0017] Figure 2 What is shown is a schematic diagram of the first partial three-dimensional structure of a submersible slurry pump with an automatic flushing device when shut down according to the utility model;
[0018] Figure 3 The second partial stereoscopic structure diagram of a submersible slurry pump with an automatic flushing device when shutting down is shown in the utility model;
[0019] Figure 4 The third partial stereoscopic structure diagram of a submersible slurry pump with an automatic flushing device when shutting down is shown in the utility model;
[0020] Explanation of the reference numerals: 1. Auxiliary component; 2. Mounting component; 3. Stirring component; 4. Connecting component; 5. Control component; 6. Shell; 101. Drive motor; 102. Motor seat; 103. Bearing seat; 201. Mounting plate; 202. Mounting bolts; 203. Fixing plate; 301. Connecting pipe; 302. Pump shaft; 303. Guard plate; 304. Impeller; 305. Stirring wheel; 306. Pump body; 401. Connecting pipe; 402. Connecting flange; 403. Water outlet pipe; 501. Check valve; 502. Stop valve; 503. Solenoid valve; 504. Clean water pipeline. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0022] See also Figure 1 The utility model provides an embodiment: a submersible slurry pump with an automatic flushing device upon shutdown, comprising a shell 6, an auxiliary component 1, a mounting component 2, a stirring component 3, a connecting component 4 and a control component 5; the auxiliary component 1 is arranged on the side wall of the shell 6, the mounting component 2 is arranged on the side wall of the auxiliary component 1, a driving component is arranged below the auxiliary component 1, a connecting component 4 is arranged on the side wall of the driving component, and a control component 5 with a control function is arranged on the side wall of the connecting component 4.
[0023] See also Figure 2 The auxiliary component 1 includes a driving motor 101, a motor seat 102 and a bearing seat 103; the driving motor 101 is arranged inside the housing 6, the motor seat 102 is arranged on the side wall of the housing 6, and the bearing seat 103 is arranged on the side wall of the housing 6; the setting of the motor seat 102 and the bearing seat 103 can play an auxiliary installation role, and the driving motor 101 can be started to achieve the effect of rotation; the mounting component 2 includes a mounting plate 201, mounting bolts 202 and a fixing plate 203; a fixing plate 203 is arranged on the side wall of the bearing seat 103, and one side of the fixing plate 203 is provided A mounting plate 201 is provided, and mounting bolts 202 are provided inside the fixing plate 203; the fixing plate 203 can be fixed to the mounting plate 201 by the mounting bolts 202, so as to achieve a fixed installation effect; the driving component includes a connecting pipe 301, a pump shaft 302 and a guard plate 303; a connecting pipe 301 is provided below the bearing seat 103, a pump shaft 302 is provided inside the connecting pipe 301, and a guard plate 303 is provided on the side wall of the connecting pipe 301; the stirring component 3 can be driven to rotate by the pump shaft 302, and a protective effect can be achieved by the guard plate 303.
[0024] See also Figure 3-4In this embodiment, the driving assembly further includes an impeller 304, a stirring wheel 305 and a pump body 306; the pump body 306 is arranged below the guard plate 303, the impeller 304 is arranged on the side wall of the pump shaft 302, and the stirring wheel 305 is arranged at one end of the pump shaft 302; the pump shaft 302 can drive the impeller 304 to rotate, and the impeller 304 is used for flushing, so that the solid particles can be flushed out of the pump body 306, and the pump shaft 302 can drive the stirring wheel 305 to rotate, and the stirring wheel 305 can be used for The connecting assembly 4 includes a connecting pipe 401, a connecting flange 402 and a water outlet pipe 403; a connecting pipe 401 is provided on the side wall of the pump body 306, a connecting flange 402 is provided at one end of the connecting pipe 401, and a water outlet pipe 403 is provided on one side of the connecting flange 402; the connecting pipe 401 and the water outlet pipe 403 can be connected and fixed by the connecting flange 402, so as to achieve the effect of fastening installation; the control assembly 5 includes a check valve 501, a stop valve 502, an electric Magnetic valve 503 and clean water pipeline 504; a clean water pipeline 504 is arranged on the side wall of the outlet pipe 403, a solenoid valve 503 is arranged on the side wall of the clean water pipeline 504, a check valve 501 is arranged on the side wall of the connecting pipe 401, and a stop valve 502 is arranged on the side wall of the outlet pipe 403; when the pump stops, the pump outlet check valve 501 will automatically close, the control cabinet controls the solenoid valve 503 to be energized, the solenoid valve 503 is opened, and the opening time of the solenoid valve 503 is controlled by a time relay, so that the external clean water is The water outlet pipe 403 enters the pump through this bypass. The check valve 501 above is under pressure, but open at the bottom. Clean water will not flow upwards and then reach the pump body 306 and the impeller 304 for flushing, flushing the solid particles out of the pump body 306. In this way, the pump will not get stuck when it is started a second time. The flushing time is the time when the solenoid valve 503 is powered on and opened. The length of time can be adjusted according to the on-site working conditions. The clean water pipeline 504 has a small diameter and a small amount of water, so it will not flush the entire rotor and cause the impeller 304 to loosen.
[0025] When working, firstly, the pump outlet must be installed with a check valve 501 and a stop valve 502. Then, a bypass pipe with a diameter of DN15 is welded on the pipeline below the pump outlet flange, and a normally closed solenoid valve 503 is installed on the bypass pipe;
[0026] When the pump stops, the pump outlet check valve 501 will automatically close, the control cabinet controls the solenoid valve 503 to be energized, and the solenoid valve 503 is opened. The opening time of the solenoid valve 503 is controlled by a time relay, so that the external clean water enters the pump outlet pipe 403 through this bypass. The upper check valve 501 has pressure, and the lower part is open. The clean water will not flow upward and reach the pump body 306 and the impeller 304 for flushing, flushing the solid particles out of the pump body 306. In this way, the pump will not get stuck when it is started for the second time. The flushing time is the time when the solenoid valve 503 is energized and opened. The length of time can be adjusted according to the on-site working conditions. The clean water pipeline 504 has a small diameter and a small amount of water, so it will not flush the entire rotor and cause the impeller 304 to loosen.
[0027] Through the above steps, when the pump stops, the pump outlet control component 5 will automatically close, and the control cabinet control component 5 will be powered on and opened, so that the external clean water will enter the pump connection component 4 through this bypass. The upper control component 5 has pressure, and the lower part is open, so the clean water will not flow upward, and then reach the pump body 306 and the impeller 304 for flushing, flushing the solid particles out of the pump body 306, so that the pump will not be stuck when it is started for the second time. The flushing time is the time when the control component 5 is powered on and opened, and the length of this time can be adjusted according to the on-site working conditions.
[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.
Claims
1. A submersible slurry pump with an automatic flushing device when shut down, comprising a housing (6); characterized in that: The invention also comprises an auxiliary component (1), a mounting component (2), a stirring component (3), a connecting component (4) and a control component (5); the auxiliary component (1) is arranged on the side wall of the shell (6), the mounting component (2) is arranged on the side wall of the auxiliary component (1), a driving component is arranged below the auxiliary component (1), the connecting component (4) is arranged on the side wall of the driving component, and the control component (5) with a control function is arranged on the side wall of the connecting component (4).
2. A submersible slurry pump with an automatic flushing device upon shutdown according to claim 1, characterized in that: The auxiliary component (1) comprises a driving motor (101), a motor seat (102) and a bearing seat (103); the driving motor (101) is arranged inside the housing (6), the motor seat (102) is arranged on the side wall of the housing (6), and the bearing seat (103) is arranged on the side wall of the housing (6).
3. A submersible slurry pump with an automatic flushing device when shut down according to claim 2, characterized in that: The mounting assembly (2) comprises a mounting plate (201), mounting bolts (202) and a fixing plate (203); the fixing plate (203) is arranged on the side wall of the bearing seat (103), the mounting plate (201) is arranged on one side of the fixing plate (203), and the fixing bolts (202) are arranged inside the fixing plate (203).
4. A submersible slurry pump with an automatic flushing device when shut down according to claim 2, characterized in that: The driving assembly comprises a connecting pipe (301), a pump shaft (302) and a guard plate (303); the connecting pipe (301) is arranged below the bearing seat (103), the pump shaft (302) is arranged inside the connecting pipe (301), and the guard plate (303) is arranged on the side wall of the connecting pipe (301).
5. A submersible slurry pump with an automatic flushing device when shut down according to claim 4, characterized in that: The driving assembly further comprises an impeller (304), a stirring wheel (305) and a pump body (306); the pump body (306) is arranged below the guard plate (303), the impeller (304) is arranged on the side wall of the pump shaft (302), and the stirring wheel (305) is arranged at one end of the pump shaft (302).
6. A submersible slurry pump with an automatic flushing device when shut down according to claim 5, characterized in that: The connection assembly (4) comprises a connection pipe (401), a connection flange (402) and a water outlet pipe (403); the connection pipe (401) is arranged on the side wall of the pump body (306), a connection flange (402) is arranged at one end of the connection pipe (401), and a water outlet pipe (403) is arranged on one side of the connection flange (402).
7. A submersible slurry pump with an automatic flushing device when shut down according to claim 6, characterized in that: The control component (5) comprises a check valve (501), a stop valve (502), a solenoid valve (503) and a clean water pipeline (504); the clean water pipeline (504) is arranged on the side wall of the water outlet pipe (403), the solenoid valve (503) is arranged on the side wall of the clean water pipeline (504), the check valve (501) is arranged on the side wall of the connecting pipe (401), and the stop valve (502) is arranged on the side wall of the water outlet pipe (403).