Gas-liquid separation structure of self-priming pump

Abstract

The utility model belongs to the technical field of self-priming pumps, and particularly relates to a gas-liquid separation structure of a self-priming pump, which comprises a self-priming pump body, a self-priming chamber, a pressurizing chamber and a gas-liquid separation chamber are arranged in the self-priming pump body, a water return channel is arranged between the gas-liquid separation chamber and the self-priming chamber, a water inlet channel communicated with the outside is arranged on the self-priming chamber, and a water outlet channel communicated with the outside is arranged on the pressurizing chamber. A water outlet channel communicated with the outside is formed in the upper portion of the gas-liquid separation chamber, an impeller driven by a motor to rotate is arranged in the pressurizing chamber, a spiral flow channel which surrounds the periphery of the pressurizing chamber and is the same as the impeller in rotation direction is arranged in the gas-liquid separation chamber, and water in the gas-liquid separation chamber spirally flows to the self-suction chamber through the spiral flow channel. The gas-liquid separation device is simple in structure, low in cost and ingenious in design, disordered liquid is guided to spirally flow by reasonably optimizing the flowing direction of the liquid in the gas-liquid separation chamber, the length of a liquid flowing path is increased, and meanwhile the gas-liquid separation efficiency is effectively improved.

Description

Technical Field:

[0001] The utility model belongs to the technical field of self-priming pumps, and particularly refers to a gas-liquid separation structure of a self-priming pump. Background Art:

[0002] After the self-priming pump starts, the impeller in the pressurizing chamber rotates at a high speed, and the liquid in the pressurizing chamber of the self-priming pump is discharged outward by the action of centrifugal force. In this way, a vacuum is formed at the inlet of the impeller, that is, the water inlet port in the pressurizing chamber. The air and water in the self-priming chamber connected to the water inlet port in the pressurizing chamber and the pipeline connected to the self-priming pump will be sucked into the self-priming pump, and a gas-liquid mixture will be formed in the self-priming chamber. Then, it is discharged to the gas-liquid separation chamber above the pump chamber through the impeller. In the gas-liquid separation chamber, the gas and the liquid are separated. The gas is discharged from the water outlet channel of the self-priming pump, and the liquid will return to the self-priming chamber through the return channel and continue to mix with the air in the self-priming chamber. Such a cycle is repeated, and the air in the self-priming pump and the pipeline connected to the self-priming pump is gradually exhausted, so as to realize the normal pumping condition.

[0003] However, at present, the gas-liquid separation chamber structure of the existing self-priming pump is relatively simple. The water discharged from the pressurizing chamber by the impeller flows disorderly in the gas-liquid separation chamber, and the separated gas and liquid are very likely to be mixed again and flow back to the self-priming chamber through the return channel, resulting in poor gas-liquid separation efficiency. Summary of the Invention:

[0004] The purpose of the utility model is to provide a gas-liquid separation structure of a self-priming pump, which reasonably optimizes the flow direction of the liquid in the gas-liquid separation chamber to guide the disordered liquid into a spiral flow, not only increasing the length of the liquid flow path, but also effectively improving the gas-liquid separation efficiency.

[0005] The utility model is realized as follows:

[0006] A gas-liquid separation structure of a self-priming pump includes a self-priming pump body. The self-priming pump body has a self-priming chamber, a pressurizing chamber with an inlet end communicating with the self-priming chamber, and a gas-liquid separation chamber communicating with the outlet end of the pressurizing chamber. A return water channel is provided between the gas-liquid separation chamber and the self-priming chamber. An inlet channel communicating with the outside is opened on the self-priming chamber. An outlet channel communicating with the outside is opened on the upper part of the gas-liquid separation chamber. An impeller driven by a motor to rotate is provided in the pressurizing chamber. A spiral flow channel is provided in the gas-liquid separation chamber, which surrounds the outer periphery of the pressurizing chamber and has the same rotation direction as the impeller. The spiral flow channel allows the water in the gas-liquid separation chamber to flow spirally towards the self-priming chamber.

[0007] In the above gas-liquid separation structure of a self-priming pump, a self-priming pump head is arranged in the pump chamber of the self-priming pump body. The pressurizing chamber is the inner cavity of the self-priming pump head. The front end of the self-priming pump head is the water inlet end, and a self-priming chamber is formed between it and the pump chamber of the self-priming pump body. A gas-liquid separation chamber is formed between the outer side wall of the self-priming pump head and the pump chamber of the self-priming pump body. A spiral protrusion is arranged on the outer wall surface of the self-priming pump head along the rotation direction of the impeller, and the spiral protrusion forms the spiral flow channel.

[0008] In the above gas-liquid separation structure of a self-priming pump, the spiral protrusion and the self-priming pump head are of an integral structure.

[0009] In the above gas-liquid separation structure of a self-priming pump, the outer side wall of the spiral protrusion abuts against the wall surface of the pump chamber of the self-priming pump body. Positioning insertion strips are arranged on the side wall of the pump chamber of the self-priming pump body, and positioning through grooves that can be inserted and matched with the positioning insertion strips are opened on the outer side wall of the spiral protrusion.

[0010] In the above gas-liquid separation structure of a self-priming pump, the water outlet end of the pressurizing chamber is located on one side of the spiral start end of the spiral protrusion, the return water channel is located on one side of the spiral end of the spiral protrusion, and the water outlet channel is opened at the port of the gas-liquid separation chamber and is located in the middle of the spiral of the spiral protrusion.

[0011] The outstanding advantages of the present utility model compared with the prior art are:

[0012] The structure of the present utility model is simple, the cost is low, and the design is ingenious. By reasonably optimizing the flow direction of the liquid in the gas-liquid separation chamber to guide the disordered liquid into spiral flow, not only the length of the liquid flow path is increased, but also the gas-liquid separation efficiency is effectively improved. Description of the drawings:

[0013] Figure 1 is a cross-sectional view of the whole self-priming pump of the present utility model;

[0014] Figure 2 is an exploded view of the structure between the self-priming pump body and the self-priming pump head of the present utility model.

[0015] In the figure: 1. Self-priming pump body; 2. Self-priming chamber; 3. Pressurizing chamber; 4. Gas-liquid separation chamber; 5. Return water channel; 6. Water inlet channel; 7. Water outlet channel; 8. Impeller; 9. Self-priming pump head; 10. Spiral protrusion; 11. Positioning through groove. Detailed implementation manners:

[0016] The following further describes the present utility model with specific embodiments. Refer to Figure 1 —:

[0017] A gas-liquid separation structure of a self-priming pump, including a self-priming pump body 1. Inside the self-priming pump body 1, there are a self-priming chamber 2, a pressurizing chamber 3 with an inlet end communicating with the self-priming chamber 2, and a gas-liquid separation chamber 4 communicating with the outlet end of the pressurizing chamber 3. A return water channel 5 is provided between the gas-liquid separation chamber 4 and the self-priming chamber 2. An inlet channel 6 communicating with the outside is opened on the self-priming chamber 2. An outlet channel 7 communicating with the outside is opened at the upper part of the gas-liquid separation chamber 4. An impeller 8 driven by a motor to rotate is provided in the pressurizing chamber 3. There is a spiral flow channel surrounding the outer periphery of the pressurizing chamber 3 and in the same rotation direction as the impeller 8 in the gas-liquid separation chamber 4, and this spiral flow channel allows the water liquid in the gas-liquid separation chamber 4 to flow spirally towards the self-priming chamber 2.

[0018] The structure of the present utility model is simple, low in cost and ingeniously designed. By reasonably optimizing the flow direction of the liquid in the gas-liquid separation chamber 4 to guide the disordered liquid into a spiral flow, it not only increases the length of the liquid flow path, but also effectively improves the gas-liquid separation efficiency.

[0019] Among them, in this embodiment, the specific design structure of the self-priming pump body 1 is: a self-priming pump head 9 is arranged in the pump cavity of the self-priming pump body 1. The pressurizing chamber 3 is the inner cavity of the self-priming pump head 9. The front end of the self-priming pump head 9 is the inlet end and the self-priming chamber 2 is formed between it and the pump cavity of the self-priming pump body 1. The gas-liquid separation chamber 4 is formed between the outer side wall of the self-priming pump head 9 and the pump cavity of the self-priming pump body 1. A spiral protrusion 10 is arranged on the outer wall surface of the self-priming pump head 9 along the rotation direction of the impeller 8, and this spiral protrusion 10 forms the spiral flow channel. And, in this embodiment, the spiral protrusion 10 and the self-priming pump head 9 are of an integral structure.

[0020] Of course, the spiral protrusion 10 can also be directly arranged on the inner wall surface of the pump cavity of the self-priming body.

[0021] And in order to facilitate the setting of the self-priming pump head 9 in the pump cavity of the self-priming pump body 1, the outer side wall of the spiral protrusion 10 abuts against the wall surface of the pump cavity of the self-priming pump body 1. Positioning insertion strips are arranged on the side wall of the pump cavity of the self-priming pump body 1, and positioning through grooves 11 that can be inserted and matched with the positioning insertion strips are opened on the outer side wall of the spiral protrusion 10.

[0022] At the same time, the outlet end of the pressurizing chamber 3 is located on one side of the spiral start end of the spiral protrusion 10, the return water channel 5 is located on one side of the spiral end end of the spiral protrusion 10, and the outlet channel 7 is opened at the port of the gas-liquid separation chamber 4 and is located at the spiral middle part of the spiral protrusion 10.

[0023] The above embodiments are only one of the preferred embodiments of the present utility model, and do not limit the implementation scope of the present utility model. Therefore, all equivalent changes made according to the shape, structure and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A gas-liquid separation structure of a self-priming pump, comprising a self-priming pump body (1). The self-priming pump body (1) has a self-priming chamber (2), a pressurizing chamber (3) with an inlet end communicating with the self-priming chamber (2), and a gas-liquid separation chamber (4) communicating with the outlet end of the pressurizing chamber (3). A return water channel (5) is provided between the gas-liquid separation chamber (4) and the self-priming chamber (2). An inlet channel (6) communicating with the outside is opened on the self-priming chamber (2). An outlet channel (7) communicating with the outside is opened at the upper part of the gas-liquid separation chamber (4). An impeller (8) driven by an electric motor to rotate is provided in the pressurizing chamber (3), and it is characterized in that: The gas-liquid separation chamber (4) is provided with a spiral flow channel surrounding the outer periphery of the pressurization chamber (3) and having the same rotation direction as the impeller (8), and the spiral flow channel enables the water liquid in the gas-liquid separation chamber (4) to flow spirally towards the self-priming chamber (2).

2. The gas-liquid separation structure of a self-priming pump according to claim 1, characterized in that: A self-priming pump head (9) is arranged in the pump cavity of the self-priming pump body (1). The pressurization chamber (3) is the inner cavity of the self-priming pump head (9). The front end of the self-priming pump head (9) is the water inlet end, and a self-priming chamber (2) is formed between it and the pump cavity of the self-priming pump body (1). A gas-liquid separation chamber (4) is formed between the outer side wall of the self-priming pump head (9) and the pump cavity of the self-priming pump body (1). A spiral protrusion (10) is arranged on the outer wall surface of the self-priming pump head (9) along the rotation direction of the impeller (8), and the spiral protrusion (10) forms the spiral flow channel.

3. The gas-liquid separation structure of a self-priming pump according to claim 2, characterized in that: The spiral protrusion (10) and the self-priming pump head (9) are of an integral structure.

4. The gas-liquid separation structure of a self-priming pump according to claim 2, characterized in that: The outer side wall of the spiral protrusion (10) abuts against the wall surface of the pump cavity of the self-priming pump body (1). Positioning inserts are arranged on the side wall of the pump cavity of the self-priming pump body (1), and positioning through slots (11) capable of being inserted and matched with the positioning inserts are formed on the outer side wall of the spiral protrusion (10).

5. The gas-liquid separation structure of a self-priming pump according to claim 2, characterized in that: The water outlet end of the pressurization chamber (3) is located on one side of the spiral head end of the spiral protrusion (10). The return water channel (5) is located on one side of the spiral tail end of the spiral protrusion (10). The water outlet channel (7) is opened at the port of the gas-liquid separation chamber (4) and is located at the spiral middle part of the spiral protrusion (10).

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