Self-priming pump with safety protection device
By introducing support components, water inlet components and control components into the self-priming pump, and using liquid level sensors and controllers to detect the water level, the problem of the self-priming pump running dry is solved, the self-priming pump is protected against water shortage, the service life is extended and the risk of damage is reduced.
Patent Information
- Application Number
- CN202422534337.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-21
AI Technical Summary
Existing self-priming pumps cannot stop automatically after the liquid is drained, causing the impeller to run idle, increase the temperature, become easily damaged, and reduce the service life.
A safety protection device including a support assembly, a water inlet assembly and a control component is designed. The water level is detected by a liquid level sensor and a controller, and the motor is controlled to shut down to prevent the impeller from idling. A one-way valve is combined to prevent liquid backflow and protect the equipment.
Effectively prevent the self-priming pump from idling, reduce the risk of damage, extend the service life, and improve equipment stability and safety.
Smart Images
Figure CN223398897U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of self-priming pumps, in particular to a self-priming pump with a safety protection device. Background Art
[0002] The self-priming pump belongs to a self-priming centrifugal pump, which has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. A self-priming pump proposed in prior art announcement number CN2859011Y includes a pump cover, a pump base, a motor, a pump shaft, a pump casing, a pump cover, and an impeller. The pump shaft disposed in the inner cavity of the pump base is fixed to the right end output head of the motor disposed inside the pump cover through a screw hole coupling and a through-hole coupling. The pump casing is disposed on the right side of the pump base and is connected thereto by a hexagonal head bolt. The pump cover is connected to the right side of the pump casing by a cap nut and a stud. An impeller is provided on the pump shaft in the inner cavity of the pump casing. A shaft seal cover is provided at the right end of the pump shaft. The bottom of the pump casing is connected to the anchor assembly by square steel. However, after the liquid at the target pumping position is drained, the self-priming pump cannot stop working on its own, which causes the impeller of the self-priming pump to idle, and then the temperature of the various structural components of the self-priming pump continues to rise. If it is not handled in time, it is easy to cause damage to the self-priming pump, reduce its service life, and then cause unnecessary losses. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a self-priming pump safety protection device which protects the self-priming pump, reduces the risk of damage caused by idling of the self-priming pump, and extends the service life of the self-priming pump.
[0004] The utility model discloses a self-priming pump with a safety protection device, comprising a motor, a pump head, a support assembly, a water inlet assembly and a control component, wherein the output end of the motor is connected to the pump head, the motor and the pump head are mounted on the support assembly, the input end of the pump head is connected to the output end of the water inlet assembly, and the control component is mounted on the water inlet assembly; the motor is placed in a use position by the support assembly to ensure stability during use, and water is pumped through the water inlet assembly by the pump head; after the liquid at the target pumping position is drained, the water entering the water inlet assembly is reduced, and the motor can be turned off by the control component, so that the impeller inside the self-priming pump no longer rotates idly, thereby completing the water shortage protection processing of the self-priming pump, reducing the risk of damage caused by idling of the self-priming pump, and extending the service life of the self-priming pump.
[0005] Preferably, the support assembly includes a bracket, a support plate, a base and auxiliary components. The bottom of the motor is connected to the top of the support plate through the bracket, the bottom of the pump head is connected to the top of the left end of the support plate, and a shock-absorbing rubber column is provided at the bottom of the support plate, and the bottom of the shock-absorbing rubber column is connected to the top of the base; the motor and the pump head are supported by the support plate to ensure stability, and the shock-absorbing rubber column can reduce vibration during operation, reduce noise, and prevent vibration from causing damage to the equipment.
[0006] Preferably, the auxiliary components include an extension plate, a pull plate, two sets of legs and two friction plates. A storage cavity is opened at the right end of the base, the extension plate is slidably installed in the storage cavity, the pull plate is fixedly installed on the right end of the extension plate, the left end of the bottom of the base and the front and rear ends of the bottom of the pull plate are installed with legs, the bottom of the legs are fixedly installed with friction plates, and a fastening bolt is screwed on the right side of the front end of the base; loosen the fastening bolt, pull the pull plate to make the extension plate extend out in the storage cavity, and the distance between the left and right friction plates can be adjusted to increase the support area, ensure stability, and improve the scope of application.
[0007] Preferably, the water inlet assembly includes a water tank, a connecting pipe, a water inlet pipe, a water outlet pipe and a one-way valve. The water tank is located at the top of the pump head. The output end of the water tank is connected to the connecting pipe. The output end of the connecting pipe is connected to the input end of the pump head. The output end of the pump head is connected to the outlet pipe. A one-way valve is installed on the outlet pipe. A connecting flange is provided at the front end of the outlet pipe. The input end at the top of the water tank is connected to the water inlet pipe. The water source is input into the water tank through the water inlet pipe, and the pump head extracts the liquid in the water tank through the connecting pipe, and then outputs it through the outlet pipe. The one-way valve can prevent the liquid from flowing back when the delivery is stopped, causing impact on the equipment and causing damage to the equipment.
[0008] Preferably, the control component includes a liquid level sensor, a controller, a protective cover and a solenoid valve. The liquid level sensor is installed on the inner wall of the water tank and is at the same height as the input end of the connecting pipe. The controller is installed on the front side wall of the water tank, the protective cover is installed on the outside of the controller, and the solenoid valve is installed at the output end of the connecting pipe. After the liquid at the target pumping position is drained, the water entering the water tank decreases, and the water level is lower than the liquid level sensor. The liquid level sensor transmits a signal to the controller, and the controller controls the motor to turn off so that the impeller inside the self-priming pump no longer idles. At the same time, the solenoid valve is controlled to close so that liquid remains in the pump head to facilitate the next extraction, thereby completing the water shortage protection treatment of the self-priming pump and reducing the risk of damage caused by idling of the self-priming pump.
[0009] Preferably, it also includes a wireless antenna, an alarm light, a guard plate and a handle. The wireless antenna is installed on the protective cover, the alarm light is installed on the left side wall of the water tank, the wireless antenna and the alarm light are electrically connected to the controller, the bottom of the guard plate is installed on the top right end of the support plate, the left end of the guard plate is connected to the water tank, and a handle is installed on the top of the guard plate; the wireless antenna enables the equipment to be wirelessly controlled to increase the operating range, and the alarm light can remind the operator to make emergency measures. The guard plate can protect the top of the motor, and pulling the handle can facilitate the movement of the equipment and is convenient to use.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the motor is placed in the use position through the support assembly to ensure stability during use, the water is pumped through the water inlet assembly through the pump head, and after the liquid at the target pumping position is drained, the water entering the water inlet assembly is reduced, and the motor can be turned off through the control component, so that the impeller inside the self-priming pump no longer rotates idly, thereby completing the water shortage protection treatment of the self-priming pump, reducing the risk of damage caused by idling of the self-priming pump, and extending the service life of the self-priming pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of the utility model;
[0012] Figure 2 This is an axonometric structural diagram of the present utility model;
[0013] Figure 3 This is a schematic diagram of the rear three-dimensional structure of the utility model;
[0014] Figure 4 It is a schematic diagram of the lower cross-sectional structure of the utility model;
[0015] Figure 5 It is a partial cross-sectional structural schematic diagram of the utility model;
[0016] Markings in the accompanying drawings: 1. Motor; 2. Pump head; 3. Bracket; 4. Support plate; 5. Base; 6. Extension plate; 7. Pull plate; 8. Leg; 9. Friction plate; 10. Fastening bolt; 11. Water tank; 12. Connecting pipe; 13. Water inlet pipe; 14. Liquid level sensor; 15. Controller; 16. Protective cover; 17. Wireless antenna; 18. Solenoid valve; 19. Water outlet pipe; 20. One-way valve; 21. Alarm light; 22. Guard plate; 23. Handle. DETAILED DESCRIPTION
[0017] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example
[0018] like Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, the output end of the motor 1 is connected to the pump head 2, the bottom of the motor 1 is connected to the top of the support plate 4 through the bracket 3, the bottom of the pump head 2 is connected to the top of the left end of the support plate 4, a shock-absorbing rubber column is provided at the bottom of the support plate 4, and the bottom of the shock-absorbing rubber column is connected to the top of the base 5, the water tank 11 is located at the top of the pump head 2, the output end of the water tank 11 is connected to the connecting pipe 12, the output end of the connecting pipe 12 is connected to the input end of the pump head 2, the output end of the pump head 2 is connected to the water outlet pipe 19, a one-way valve 20 is installed on the water outlet pipe 19, and a connecting flange is provided at the front end of the water outlet pipe 19, the top input end of the water tank 11 is connected to the water inlet pipe 13, the liquid level sensor 14 is installed on the inner wall of the water tank 11 and is at the same height as the input end of the connecting pipe 12, the controller 15 is installed on the front side wall of the water tank 11, the protective cover 16 is installed on the outside of the controller 15, and the solenoid valve 18 is installed at the output end of the connecting pipe 12;
[0019] The motor 1 and the pump head 2 are supported by the support plate 4 to ensure stability. The shock-absorbing rubber column can reduce vibration during operation, reduce noise, and prevent damage to the equipment caused by vibration. The water source is input into the water tank 11 through the water inlet pipe 13, and the pump head 2 extracts the liquid in the water tank 11 through the connecting pipe 12, and then outputs it through the water outlet pipe 19. The one-way valve 20 can prevent the liquid from flowing back when the delivery is stopped, causing impact on the equipment and causing damage to the equipment. After the liquid at the target pumping position is drained, the water entering the water tank 11 is reduced, and the water level is lower than the liquid level sensor 14. The liquid level sensor 14 transmits a signal to the controller 15. The controller 15 controls the motor 1 to turn off, so that the impeller inside the self-priming pump no longer rotates idly, and at the same time controls the solenoid valve 18 to close, so that liquid remains in the pump head 2, which is convenient for the next extraction, thereby completing the water shortage protection treatment of the self-priming pump and reducing the risk of damage caused by idling of the self-priming pump. Example
[0020] like Figure 1 and Figure 4As shown, on the basis of Example 1, the base 5 further includes a storage cavity at the right end, an extension plate 6 is slidably installed in the storage cavity, a pull plate 7 is fixedly installed at the right end of the extension plate 6, a support leg 8 is installed at the left end of the bottom of the base 5 and the front and rear ends of the bottom of the pull plate 7, a friction plate 9 is fixedly installed at the bottom of the support leg 8, a fastening bolt 10 is screwed on the right side of the front end of the base 5, a wireless antenna 17 is installed on the protective cover 16, an alarm light 21 is installed on the left side wall of the water tank 11, the wireless antenna 17 and the alarm light 21 are electrically connected to the controller 15, the bottom of the guard plate 22 is installed at the top right end of the support plate 4, the left end of the guard plate 22 is connected to the water tank 11, and a handle 23 is installed on the top of the guard plate 22;
[0021] Loosen the fastening bolts 10 and pull the pull plate 7 to extend the extension plate 6 into the storage cavity. The distance between the left and right friction plates 9 can be adjusted to increase the support area, ensure stability, and improve the scope of application. The device can be wirelessly controlled through the wireless antenna 17 to increase the operating range. At the same time, the alarm light 21 can remind the operator to make emergency measures. The guard plate 22 can protect the top of the motor 1. Pulling the handle 23 can facilitate the movement of the device and make it easy to use.
[0022] like Figures 1 to 5 As shown, the utility model is a self-priming pump with a safety protection device. When working, the motor 1 and the pump head 2 are supported by the support plate 4. The shock-absorbing rubber column can reduce the vibration during operation and reduce noise. The fastening bolts 10 are loosened and the pull plate 7 is pulled to extend the extension plate 6 in the storage cavity. The distance between the left and right friction plates 9 can be adjusted to increase the support area and ensure stability. The water source is input into the water tank 11 through the water inlet pipe 13, and the pump head 2 extracts the liquid in the water tank 11 through the connecting pipe 12, and then outputs it through the water outlet pipe 19. The one-way valve 20 can prevent the liquid from flowing back when the delivery is stopped. After the liquid at the target pumping position is drained, the water entering the water tank 11 is reduced, and the water level is lower than the liquid level sensor 14. The liquid level sensor 14 transmits a signal to the controller 15. The controller 15 controls the motor 1 to turn off, so that the impeller inside the self-priming pump no longer runs idle, and at the same time controls the solenoid valve 18 to close, so that liquid remains in the pump head 2 to facilitate the next extraction. The device can be wirelessly controlled through the wireless antenna 17, and the alarm light 21 can remind the operator to make emergency measures.
[0023] The liquid level sensor 14, controller 15, wireless antenna 17, solenoid valve 18 and alarm light 21 of the self-priming pump with a safety protection device of the utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for creative work by technicians in this field.
[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A self-priming pump with a safety protection device, characterized in that: The invention comprises a motor (1), a pump head (2), a support assembly, a water inlet assembly and a control component. The output end of the motor (1) is connected to the pump head (2). The motor (1) and the pump head (2) are mounted on the support assembly. The input end of the pump head (2) is connected to the output end of the water inlet assembly. The control component is mounted on the water inlet assembly. The water inlet assembly comprises a water storage tank (11), a connecting pipe (12), a water inlet pipe (13), a water outlet pipe (19) and a one-way valve (20). The water storage tank (11) is located on the top of the pump head (2). The output end of the water storage tank (11) is connected to the connecting pipe (12). The output end of the connecting pipe (12) is connected to the input end of the pump head (2). The output end of the pump head (2) is connected to the output end of the water inlet pipe (13). The end of the water tank (11) is connected to a water outlet pipe (19), a one-way valve (20) is installed on the water outlet pipe (19), a connecting flange is provided at the front end of the water outlet pipe (19), and the top input end of the water tank (11) is connected to the water inlet pipe (13); the control component includes a liquid level sensor (14), a controller (15), a protective cover (16) and a solenoid valve (18), the liquid level sensor (14) is installed on the inner wall of the water tank (11) and is at the same height as the input end of the connecting pipe (12), the controller (15) is installed on the front side wall of the water tank (11), the protective cover (16) is installed on the outside of the controller (15), and the solenoid valve (18) is installed at the output end of the connecting pipe (12).
2. A self-priming pump with a safety protection device according to claim 1, characterized in that: The support assembly comprises a bracket (3), a support plate (4), a base (5) and auxiliary components. The bottom of the motor (1) is connected to the top of the support plate (4) through the bracket (3), the bottom of the pump head (2) is connected to the top of the left end of the support plate (4), and a shock-absorbing rubber column is provided at the bottom of the support plate (4), and the bottom of the shock-absorbing rubber column is connected to the top of the base (5).
3. A self-priming pump with a safety protection device as claimed in claim 2, characterized in that: The auxiliary components include an extension plate (6), a pull plate (7), two sets of legs (8) and two friction plates (9). A storage cavity is provided at the right end of the base (5). The extension plate (6) is slidably mounted in the storage cavity. The pull plate (7) is fixedly mounted at the right end of the extension plate (6). Legs (8) are mounted at the left end of the bottom of the base (5) and at the front and rear ends of the bottom of the pull plate (7). Friction plates (9) are fixedly mounted at the bottom of the legs (8). A fastening bolt (10) is screwed onto the right side of the front end of the base (5).
4. A self-priming pump with a safety protection device according to claim 1, characterized in that: The device further comprises a wireless antenna (17), an alarm light (21), a guard plate (22) and a handle (23). The wireless antenna (17) is mounted on the protective cover (16). The alarm light (21) is mounted on the left side wall of the water tank (11). The wireless antenna (17) and the alarm light (21) are electrically connected to the controller (15). The bottom of the guard plate (22) is mounted on the top right end of the support plate (4). The left end of the guard plate (22) is connected to the water tank (11). The top of the guard plate (22) is mounted with a handle (23).