Self-priming pump with built-in gas-liquid structure

Abstract

The utility model provides a kind of self-priming pump with built-in gas-liquid structure, belong to self-priming pump technical field.It solves the problem of insufficient operating efficiency of self-priming pump in prior art.The utility model includes pump shell, pump body, impeller, gas-liquid ejection pipe, intermediate body and driving motor, and extension cuboid is formed outside pump shell, and communication seat is formed inside pump shell, and flow guide channel is provided in the inside of communication seat and is communicated with gas-liquid inlet, and gas connection hole and liquid connection hole are respectively provided in communication seat, one end of gas-liquid ejection pipe is connected with pump body and the other end is connected with communication seat, gas-liquid channel is provided in the inside of gas-liquid ejection pipe, and connector is formed in one end of gas-liquid ejection pipe and gas-liquid cylinder is formed in the other end, liquid inlet window is provided on the outer surface of gas-liquid cylinder, gas-liquid ejection pipe is inserted into communication seat, gas-liquid cylinder is connected with water connection hole and liquid inlet window is communicated with flow guide channel, and air inlet head is connected with gas connection hole.The utility model has the advantages of compact structure and high efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of self-priming pump technology, and relates to a self-priming pump with built-in gas-liquid structure. Background Technology

[0002] A self-priming pump is a self-priming centrifugal pump with automatic suction function. It features a compact structure, convenient operation, and no need for a foot valve, and is widely used in industrial and civil fields.

[0003] Chinese patent publication number CN208565003U discloses a self-priming pump, including a pump body, a base frame, a pump shaft, a connecting frame, a bearing frame, a sealing housing, and a mechanical seal. The lower end of the pump body, which has a fluid inlet and outlet, is bolted to the base frame. The rear end of the pump body is bolted to the connecting frame, and the rear end of the connecting frame is bolted to the bearing frame. A front rolling bearing is provided in the front part of the bearing frame housing, and a rear rolling bearing is provided in the rear part of the bearing frame housing. The horizontal pump shaft passes through the connecting frame and the bearing frame in sequence and is supported by the front rolling bearing and the rear rolling bearing. The rear rolling bearing is fixed by a bearing cap connected to the bearing frame. A vacuum cavity is formed between the water ring blades of the water ring centrifugal impeller and the inner cavity of the sealing housing.

[0004] As can be seen from the attached drawings and the specification, the self-priming pump provided by this patent has a relatively long internal pipeline, which will lead to a significant increase in frictional resistance and local resistance at the suction end, thereby reducing operating efficiency. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a self-priming pump with a built-in gas-liquid structure.

[0006] The objective of this utility model can be achieved through the following technical solution: A self-priming pump with a built-in gas-liquid structure includes a pump casing, a pump body, an impeller, a gas-liquid ejector tube, an intermediate body, and a drive motor. The pump casing is a conical cylinder structure with one open side. An extended cuboid is formed on the outside of the pump casing. The extended cuboid is located at the upper and lower ends of the pump casing and on the unopened side of the pump casing. An air inlet, a liquid inlet, an air outlet, and a liquid outlet are respectively opened in the extended cuboid. A connecting seat is formed inside the pump casing. A flow guide channel is opened inside the connecting seat and the flow guide channel is connected to the gas-liquid inlet. A connecting air hole and a connecting liquid hole are respectively opened in the connecting seat. The pump body, impeller, and gas-liquid ejector are connected to one end of the intermediate body and installed inside the pump casing. The pump body is connected to one end of the intermediate body and the impeller is installed between the pump body and the intermediate body. One end of the gas-liquid ejector is connected to the pump body and the other end is connected to the connecting seat. A gas-liquid channel is opened inside the gas-liquid ejector. A connector is formed at one end of the gas-liquid ejector and a gas-liquid cylinder is formed at the other end. A liquid inlet window is opened on the outer surface of the gas-liquid cylinder. An air inlet head is installed in the gas-liquid cylinder. The gas-liquid ejector extends into the connecting seat. The gas-liquid cylinder is connected to the water connection hole and the liquid inlet window is connected to the guide channel. The air inlet head is connected to the air connection hole.

[0007] In the aforementioned self-priming pump with a built-in gas-liquid structure, a connecting seat is formed on one side of the pump body, and the connector is connected to the connecting seat.

[0008] In the aforementioned self-priming pump with a built-in gas-liquid structure, an air inlet sealing bolt and an air outlet sealing bolt are respectively installed in the air inlet and air outlet, and an inlet cover and an outlet cover are respectively installed in the liquid inlet and liquid outlet.

[0009] In the aforementioned self-priming pump with a built-in gas-liquid structure, a sealing groove is provided in the gas-liquid cylinder, a first sealing ring is provided in the sealing groove, and a second sealing ring is provided at the outer end of the air inlet head.

[0010] In the aforementioned self-priming pump with a built-in gas-liquid structure, an air inlet channel is provided inside the pump casing, and the air inlet channel is connected to the air inlet hole and the connecting hole.

[0011] Compared with the prior art, the self-priming pump with built-in gas-liquid structure provided by this utility model has the following beneficial effects: Through the integrated design of the extended cuboid outside the pump casing and the connecting seat inside the pump casing, the air inlet, liquid inlet, air outlet and liquid outlet are concentrated on the extended cuboid of the pump casing. At the same time, through the guide channel, air connection hole and liquid connection hole of the connecting seat, it is directly connected to the gas-liquid ejector tube, realizing the built-in integration of the gas path and the liquid path. This makes the overall structure of this utility model more compact, reduces redundant pipelines, shortens the self-priming time, enables rapid liquid extraction, and improves work efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the present invention;

[0014] Figure 3 This is a schematic diagram of the internal structure of the pump casing;

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of the pump casing;

[0016] Figure 5 This is a schematic diagram of the gas-liquid ejector tube structure.

[0017] In the diagram: 1. Pump casing; 11. Extended cuboid; 12. Air inlet; 121. Air inlet sealing bolt; 13. Liquid inlet; 131. Liquid inlet cover; 14. Air outlet; 141. Air outlet sealing bolt; 15. Liquid outlet; 151. Liquid outlet cover; 16. Connecting seat; 161. Flow guide channel; 162. Air connection hole; 163. Liquid connection hole; 17. Air inlet channel; 2. Pump body; 21. Connecting seat; 3. Impeller; 4. Gas-liquid ejector tube; 41. Gas-liquid channel; 42. Connector; 43. Gas-liquid cylinder; 431. Liquid inlet window; 432. Sealing groove; 5. Intermediate body; 6. Drive motor; 7. Air inlet head; 8. First sealing ring; 9. Second sealing ring. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1 to 5 As shown, this embodiment includes a pump casing 1, a pump body 2, an impeller 3, a gas-liquid ejector tube 4, an intermediate body 5, and a drive motor 6. The pump casing 1 adopts a conical structure design with one side opening and an integrally formed extended cuboid 11 on the outside. The extended cuboid 11 is located at the upper and lower ends and the unopened side of the pump casing 1. The extended cuboid 11 is provided with an air inlet 12, a liquid inlet 13, an air outlet 14, and a liquid outlet 15 to realize the separation of gas and liquid input and output. Air inlet sealing bolts are installed in the air inlet 12 and the air outlet 14 respectively. 121 and the air outlet sealing bolt 141 can control the opening and closing of the air passage as needed. The liquid inlet 13 and the liquid outlet 15 are respectively equipped with liquid inlet cover 131 and liquid outlet cover 151, which serve as a seal and protection function, and facilitate disassembly and maintenance. The pump housing 1 has an integrally formed connecting seat 16. The connecting seat 16 has a flow guide channel 161 inside, and the flow guide channel 161 is connected to the gas and liquid inlet to provide guidance for liquid flow. The connecting seat 16 also has a gas connection hole 162 and a liquid connection hole 163 for internal gas and liquid conduction.

[0020] like Figures 1 to 5As shown, the pump casing 1 is fixedly connected to one end of the intermediate body 5 by bolts. The pump body 2, impeller 3 and gas-liquid ejector 4 are all installed inside the pump casing 1. The pump body 2 is connected to one end of the intermediate body 5. The impeller 3 is installed between the pump body 2 and the intermediate body 5 and is driven to rotate by the drive motor 6. One end of the gas-liquid ejector 4 is connected to the pump body 2 and the other end is connected to the connecting seat 16. A gas-liquid channel 41 is opened inside it for gas-liquid mixing and transmission.

[0021] like Figures 1 to 5 As shown, the gas-liquid ejector tube 4 has a connector 42 at one end and a gas-liquid cylinder 43 at the other end. The gas-liquid cylinder 43 has a liquid inlet window 431 on its outer surface to facilitate liquid entry. An air inlet head 7 is installed in the gas-liquid cylinder 43 for introducing gas. The gas-liquid ejector tube 4 extends into the connecting seat 16 as a whole. The gas-liquid cylinder 43 is connected to the liquid connection hole 163, the liquid inlet window 431 is connected to the flow guide channel 161, and the air inlet head 7 is connected to the air connection hole 162 to achieve precise gas-liquid docking and transmission.

[0022] Specifically, such as Figure 1 As shown, the air inlet head 7 is in the shape of a trumpet. The smaller end of the air inlet head 7 extends into the gas-liquid cylinder 43, while the larger end of the air inlet head 7 is located outside the gas-liquid cylinder 43 and is connected to the air connection port 162.

[0023] To elaborate further, such as Figure 2 As shown, a connecting seat 21 is integrally formed on one side of the pump body 2. The connector 42 of the gas-liquid ejector tube 4 is fixedly connected to the connecting seat 21 by a threaded connection to ensure the stability of the connection.

[0024] To elaborate further, such as Figure 2 and Figure 5 As shown, a sealing groove 432 is provided in the gas-liquid cylinder 43, and a first sealing ring 8 is provided in the sealing groove 432. A second sealing ring 9 is provided at the outer end of the air inlet head 7. Through the double sealing design, gas-liquid leakage is effectively prevented and the working efficiency of the equipment is improved.

[0025] To elaborate further, such as Figure 4 As shown, an air inlet channel 17 is provided inside the pump casing 1. The air inlet channel 17 is connected to the air inlet hole 12 and the connecting hole 162 to form a complete gas transmission path, ensuring that the gas can smoothly enter the gas-liquid mixing system.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0027] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A self-priming pump with built-in gas-liquid structure, comprising a pump shell (1), a pump body (2), an impeller (3), a gas-liquid injection pipe (4), an intermediate body (5) and a driving motor (6), characterized in that: The pump casing (1) has a conical structure with one side opening. An extended cuboid (11) is formed on the outside of the pump casing (1). The extended cuboid (11) is located at the upper and lower ends of the pump casing (1) and on the unopened side of the pump casing (1). An air inlet (12), a liquid inlet (13), an air outlet (14), and a liquid outlet (15) are respectively opened in the extended cuboid (11). A connecting seat (16) is formed inside the pump casing (1). A flow guide channel (161) is opened inside the connecting seat (16) and the flow guide channel (161) is connected to the gas-liquid inlet. A gas connection hole (162) and a liquid connection hole (163) are respectively opened in the connecting seat (16). The pump casing (1) is connected to one end of the intermediate body (5), and the pump body (2), impeller (3), and gas-liquid ejector tube (4) are installed inside the pump casing (1). The pump body (2) is connected to one end of the intermediate body (5), and the impeller (3) is installed between the pump body (2) and the intermediate body (5). One end of the gas-liquid ejector tube (4) is connected to the pump body (2), and the other end is connected to the connecting seat (16). A gas-liquid channel (41) is opened inside the gas-liquid ejector tube (4). A connector (42) is formed at one end of the gas-liquid ejector tube (4), and a gas-liquid cylinder (43) is formed at the other end. A liquid inlet window (431) is opened on the outer surface of the gas-liquid cylinder (43). An air inlet head (7) is installed in the gas-liquid cylinder (43). The gas-liquid ejector tube (4) extends into the connecting seat (16). The gas-liquid cylinder (43) is connected to the water connection hole, and the liquid inlet window (431) is connected to the guide channel (161). The air inlet head (7) is connected to the air connection hole (162).

2. The self-priming pump with a built-in gas-liquid structure according to claim 1, characterized in that: A connecting seat (21) is formed on one side of the pump body (2), and the connector (42) is connected to the connecting seat (21).

3. A self-priming pump with a built-in gas-liquid structure according to claim 1, characterized in that: An air inlet sealing bolt (121) and an air outlet sealing bolt (141) are respectively installed in the air inlet (12) and the air outlet (14), and an inlet cover (131) and an outlet cover (151) are respectively installed in the liquid inlet (13) and the liquid outlet (15).

4. A self-priming pump with a built-in gas-liquid structure according to claim 1, characterized in that: A sealing groove (432) is provided in the gas-liquid cylinder (43), a first sealing ring (8) is provided in the sealing groove (432), and a second sealing ring (9) is provided at the outer end of the air inlet head (7).

5. A self-priming pump with a built-in gas-liquid structure according to claim 1, characterized in that: The pump casing (1) has an air intake channel (17) inside, and the air intake channel (17) is connected to the air intake hole (12) and the connecting hole (162).

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