Automatic exhaust self-priming pump with dry running protection
By introducing gas-liquid separation water storage tank and automatic exhaust valve into the self-priming pump, combined with the inlet bend and return integrated parts, the problems of low efficiency and insufficient applicability of the traditional self-priming pump are solved, and the frequent start-stop device is realized Efficient operation and wide applicability without frequent irrigation.
Patent Information
- Application Number
- CN202421135904.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Traditional self-priming pumps are inefficient and cannot be applied to multiple different working conditions. They require frequent irrigation in frequent start-stop devices, which increases economic costs.
Design an automatic exhaust self-priming pump with dry operation protection, including a gas-liquid separation water storage tank, an automatic exhaust valve, an inlet bend, a pump body and a return integrated component, and an automatic exhaust valve and a return flow through a gas-liquid separation water storage tank. The integrated parts enable liquid filling and exhaust, ensuring that the pump body has enough liquid when starting and avoids dry operation.
The self-priming pump does not require frequent watering and maintains efficient operation, reduces the requirements for impeller diameter, is suitable for a variety of working conditions, and improves energy efficiency and manufacturing simplicity.
Smart Images
Figure CN222350971U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of self-priming pumps, in particular to an automatic exhaust self-priming pump with dry-running protection. Background Art
[0002] If the suction liquid level of a traditional centrifugal pump is below the impeller, it is very inconvenient to pre-fill it with water when starting. In order to be more suitable for devices that require frequent start and stop, a self-priming pump is needed to replace the traditional centrifugal pump. Although the self-priming pump improves the disadvantage of frequent filling of traditional centrifugal pumps, the efficiency of the traditional self-priming pump is lower than that of the centrifugal pump due to the structural characteristics of the self-priming pump itself. In addition, due to the strict requirements on the gap between the diaphragm part of the pump body and the diameter of the impeller, it is also not suitable for multiple different operating points, which undoubtedly increases the economic cost in design and manufacturing. In order to prevent the traditional centrifugal pump from running dry, the present invention combines the traditional centrifugal pump with the self-priming pump, so that in devices that require frequent start and stop, it is possible to avoid frequent filling of water while ensuring the operating efficiency of the pump.
[0003] In order to solve the above problems, we propose an automatic exhaust self-priming pump with dry running protection. Utility Model Content
[0004] The utility model aims to provide an automatic exhaust self-priming pump with dry-running protection to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the utility model provides the following technical solutions: a self-priming pump with automatic exhaust and dry-running protection, comprising a gas-liquid separation water storage tank, an automatic exhaust valve, an inlet elbow, a pump body and a reflux integrated component;
[0006] An exhaust hole is provided at the top of the gas-liquid separation water storage tank; an automatic exhaust valve is provided at the exhaust hole of the gas-liquid separation water storage tank; a water inlet and a water outlet are provided on the pump body; the bottom of the gas-liquid separation water storage tank is connected to the top of the water outlet of the pump body; one end of the inlet elbow is connected to the water inlet of the pump body; the reflux integrated component is also provided at the bottom of the gas-liquid separation water storage tank; the bottom of the gas-liquid separation water storage tank is also connected to the pump body through the reflux integrated component.
[0007] Preferably, the inlet elbow is connected to the water inlet of the pump body through a flange; the gas-liquid separation water storage tank is connected to the water outlet of the pump body through a flange.
[0008] Preferably, a pump body inlet flange gasket is provided at the connection between the inlet elbow and the water inlet of the pump body; and an outlet flange gasket is provided at the connection between the gas-liquid separation water storage tank and the water outlet of the pump body.
[0009] Preferably, a supporting rib is provided on the outer side of the pump body between the water outlet and the water inlet.
[0010] Preferably, the reflux integrated component includes a pipeline and a control valve; the gas-liquid separation water storage tank is connected to the pump body through a pipeline; and a control valve is arranged between the pipelines.
[0011] Preferably, the top of the inlet elbow is higher than the top of the gas-liquid separation water storage tank.
[0012] Compared with the prior art, the utility model has the following beneficial effects: the gas-liquid separation water storage tank ensures that the liquid fills the entire pump body under the action of its own gravity after the pump is stopped, thereby realizing automatic tank pumping. When the pump body is started next time, since the pump is full of liquid and there is an inlet elbow at the inlet to store water, the pump body can be directly started to inject liquid into the gas-liquid separation water storage tank. Since the gas-liquid separation water storage tank is equipped with an automatic exhaust valve, the air above the liquid will be discharged through the exhaust valve and the reflux integrated component will be opened at the same time, until the water tank is full of liquid, the automatic exhaust valve is closed, and the self-priming pump operates normally.
[0013] The self-priming pump with dry-running protection and automatic exhaust is simple in structure, easy to manufacture and relatively efficient, responding to the country's high requirements and standards for energy conservation. The most important thing is that the requirement for the impeller diameter is reduced, so that it can be applied to a wider range of working points. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0015] Figure 2 It is a left side cross-sectional structural schematic diagram of the utility model.
[0016] In the figure: 1-gas-liquid separation water storage tank, 2-automatic exhaust valve, 3-outlet flange gasket, 4-inlet flange gasket, 5-inlet elbow, 6-support rib plate, 7-pump body, 8-reflux integrated component. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1 , Figure 2 The utility model provides a technical solution: an automatic exhaust self-priming pump with dry-running protection, comprising a gas-liquid separation water storage tank 1, an automatic exhaust valve 2, an inlet elbow 5, a pump body 7 and a reflux integrated component 8.
[0019] An exhaust hole is provided at the top of the gas-liquid separation water storage tank 1. An automatic exhaust valve 2 is provided at the exhaust hole of the gas-liquid separation water storage tank 1. The pump body 7 is provided with a water inlet and a water outlet. The bottom of the gas-liquid separation water storage tank 1 is connected to the top of the water outlet of the pump body 7. One end of the inlet elbow 5 is connected to the water inlet of the pump body 7. The reflux integrated component 8 is also provided at the bottom of the gas-liquid separation water storage tank 1. The bottom of the gas-liquid separation water storage tank 1 is also connected to the pump body 7 through the reflux integrated component 8.
[0020] The volume of the gas-liquid separation water storage tank 1 needs to be slightly larger than the volume of the pump body 7, so as to ensure that after the pump is stopped, the liquid fills the entire pump body 7 under the action of its own gravity, thereby realizing automatic tank pumping.
[0021] Furthermore, the inlet elbow 5 is connected to the water inlet of the pump body 7 via a flange. The gas-liquid separation water storage tank 1 is connected to the water outlet of the pump body 7 via a flange.
[0022] Furthermore, a pump body inlet flange gasket 4 is provided at the connection between the inlet elbow 5 and the water inlet of the pump body 7. An outlet flange gasket 3 is provided at the connection between the gas-liquid separation water storage tank 1 and the water outlet of the pump body 7. The gas-liquid separation water storage tank 1 and the pump body 7 are connected to each other by the outlet flange gasket 3 to ensure the air tightness of the device. The inlet elbow 5 is also connected to the inlet flange of the pump body 7 by the inlet flange gasket 4 to ensure the air tightness of the device.
[0023] Furthermore, a support rib 6 is provided on the outer side of the pump body 7 between the water outlet and the water inlet. Since the water outlet at the top of the pump body 7 is connected to the gas-liquid separation water storage tank 1 and there is a medium inside, the mass is relatively large. Adding the support rib 6 can reinforce the pump body 7 and increase the bearing capacity.
[0024] Furthermore, the reflux integrated component 8 includes a pipeline and a control valve. The gas-liquid separation water storage tank 1 is connected to the pump body 7 through a pipeline. A control valve is arranged between the pipelines.
[0025] The control valve can artificially control the medium circulation between the gas-liquid separation water storage tank 1 and the pump body 7.
[0026] Furthermore, the top of the inlet elbow 5 is higher than the top of the gas-liquid separation water storage tank 1. This design ensures that the internal medium will not flow back.
[0027] Working principle:
[0028] When the device is running for the first time, it is necessary to fill the pump body 7 and the gas-liquid separation water tank 1 with medium to ensure that there is no dry running during the first start. After the device is shut down, there is a certain amount of medium in the gas-liquid separation water tank 1, and the medium will flow into the pump body 7 under its own gravity and the action of the reflux integrated component 8. Since the pump body 7 is provided with the inlet elbow 5 at the inlet, it can be ensured that the medium can be stored in the pump body 7, and the liquid level can ensure the next start. When waiting for the next device to start, since there is enough medium in the pump body 7 for starting, dry running will not occur, which will protect the self-priming pump. At the same time, the liquid transported will be directly input into the gas-liquid separation water tank 1. At this time, there are both gas and liquid in the gas-liquid separation water tank 1, but as the medium is continuously input, the gas will be output through the automatic exhaust valve 2 until the gas-liquid separation water tank 1 is filled with medium, and the automatic exhaust valve 2 is closed automatically or by human intervention. Since the dry running protection automatic exhaust self-priming pump works normally until the next pump is stopped, and the above process is repeated.
[0029] Thus, a new self-priming pump is realized which has the advantages of not needing to frequently tank the pump and retaining the efficiency of the traditional centrifugal pump. Since the utility model retains the structural characteristics of the traditional centrifugal pump, there is no requirement for the clearance between the diaphragm and the impeller of the conventional self-priming pump, so the impeller can be cut to adapt to different working conditions, and since there is no internal leakage, the hydraulic loss is reduced, so it is truly efficient and economical.
[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A self-priming pump with automatic exhaust and dry-running protection, characterized in that: It comprises a gas-liquid separation water storage tank (1), an automatic exhaust valve (2), an inlet elbow (5), a pump body (7) and a reflux integrated component (8); The top of the gas-liquid separation water storage tank (1) is provided with an exhaust hole; the exhaust hole of the gas-liquid separation water storage tank (1) is provided with an automatic exhaust valve (2); the pump body (7) is provided with a water inlet and a water outlet; the bottom of the gas-liquid separation water storage tank (1) is connected to the top of the water outlet of the pump body (7); one end of the inlet elbow (5) is connected to the water inlet of the pump body (7); the bottom of the gas-liquid separation water storage tank (1) is also provided with the reflux integrated component (8); the bottom of the gas-liquid separation water storage tank (1) is also connected to the pump body (7) through the reflux integrated component (8).
2. The automatic exhaust self-priming pump with dry running protection according to claim 1, characterized in that: The inlet elbow (5) is connected to the water inlet of the pump body (7) via a flange; and the gas-liquid separation water storage tank (1) is connected to the water outlet of the pump body (7) via a flange.
3. The automatic exhaust self-priming pump with dry running protection according to claim 2, characterized in that: A pump body inlet flange gasket (4) is provided at the connection between the inlet elbow (5) and the water inlet of the pump body (7); and an outlet flange gasket (3) is provided at the connection between the gas-liquid separation water storage tank (1) and the water outlet of the pump body (7).
4. The automatic exhaust self-priming pump with dry-running protection according to claim 1, characterized in that: The outer side surface of the pump body (7) is provided with a supporting rib plate (6) between the water outlet and the water inlet.
5. The automatic exhaust self-priming pump with dry-running protection according to claim 1, characterized in that: The reflux integrated component (8) comprises a pipeline and a control valve; the gas-liquid separation water storage tank (1) is connected to the pump body (7) via a pipeline; and a control valve is provided between the pipelines.
6. The automatic exhaust self-priming pump with dry-running protection according to claim 1, characterized in that: The top of the inlet elbow (5) is higher than the top of the gas-liquid separation water storage tank (1).