Self-priming pump without stop valve

Abstract

The utility model provides a self-priming pump without a stop valve, belongs to the field of water pumps, and solves the problem that the stop valve in the self-priming pump is easy to break down. The pump body is connected with a water inlet pipe and a water outlet pipe, a rotating shaft is installed in the motor, the water inlet pipe is connected with a water inlet channel of the pump body, the water inlet channel is connected with an impeller chamber, an impeller is installed in the impeller chamber, the impeller is fixedly connected with the rotating shaft, the impeller chamber is provided with a water outlet, the water outlet inclines leftwards, and an opening is formed in the left side of the impeller chamber. A supporting frame is installed between the opening and the motor, a through hole is formed in the impeller chamber, a water outlet is formed in the pump body, and a sealing plug is connected into the water outlet in a threaded mode. The utility model has the advantages that: a stop valve is omitted, so that various faults caused by the stop valve are avoided; the impeller is mounted in the independent impeller chamber in the pump body, so that the impeller can form vacuum conveniently, and the self-suction capacity is improved; and a water outlet and a through hole are formed, so that residual water in the pump body can be discharged conveniently.

Description

Technical Field

[0001] The utility model belongs to the field of water pumps, relates to a self-priming pump, and particularly relates to a self-priming pump without a stop valve. Background Art

[0002] The full name of a self-priming pump is a self-priming centrifugal pump, which is a type of centrifugal pump. It has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life, and strong self-priming ability. The pipeline does not need to install a foot valve, and only a certain amount of priming liquid needs to be stored in the pump body before work.

[0003] In order to prevent the sucked water flow from flowing back, a stop valve is usually installed at the water outlet of the pump body as a check valve in the existing self-priming pump. However, if the self-priming pump is used to transport sewage, the stop valve is easily blocked by impurities in the sewage and cannot be sealed, resulting in the self-priming pump losing its suction function. After long-term use, the rubber ring of the stop valve is damaged and loses its sealing ability. At the same time, the presence of the stop valve reduces the lift and flow rate of the self-priming pump.

[0004] For example, in the self-priming pump with the application number 201821812554.1, a pump shaft is arranged inside the pump, an impeller is installed at the end of the pump shaft, the upper part of the pump shaft is installed on a bracket, a sealing box is arranged on the lower end face of the bracket, a secondary impeller is installed inside the sealing box, the secondary impeller is installed on the pump shaft, a suction pipe is arranged at the bottom of the pump body, a water outlet pipe is arranged at the upper part of the pump body, and a stop valve is arranged at the water outlet pipe.

[0005] The above patent sets a stop valve at the water outlet pipe of the pool to prevent liquid from flowing back, which easily causes impurities to block the stop valve and makes the stop valve unable to close; the rubber ring of the stop valve is easily worn, resulting in a decrease in sealing performance; at the same time, the presence of the stop valve reduces the lift and flow rate of the self-priming pump. Content of the Utility Model

[0006] The purpose of the utility model is to provide a self-priming pump without a stop valve for the above problems existing in the prior art.

[0007] The utility model can be realized by the following technical solutions: A self-priming pump without a stop valve includes a pump body and a motor. A base is arranged on the motor, a rotating shaft is installed inside the motor, the pump body is installed on the base, a water inlet pipe and a water outlet pipe are installed on the pump body, a water inlet channel is arranged inside the pump body, the water inlet channel is connected to an impeller chamber, an impeller is arranged inside the impeller chamber, the impeller is connected to the rotating shaft, a water outlet is arranged on the impeller chamber, an opening is formed on the left side of the impeller chamber, and a support frame is installed between the opening and the motor.

[0008] In the above self-priming pump without a stop valve, the water outlet is inclined to the left, and there is a gap between the water outlet and the water outlet pipe.

[0009] In the self-priming pump without a stop valve as described above, a through hole is provided below the impeller chamber.

[0010] In the self-priming pump without a stop valve as described above, a drain port is provided on the pump body, a sealing plug is installed on the drain port, and the sealing plug is threadedly connected to the drain port.

[0011] In the self-priming pump without a stop valve as described above, a limiting plate is provided on the sealing plug, and a hexagonal block is provided on the limiting plate.

[0012] In the self-priming pump without a stop valve as described above, an elastic sheet is provided between the impeller and the rotating shaft, and a spring is provided outside the elastic sheet.

[0013] Compared with the prior art, the advantages of the present utility model are as follows: The stop valve is removed, an impeller chamber is added in the pump body, the space where the impeller is located is reduced, which is convenient for generating a vacuum when the impeller rotates, improving the suction force. At the same time, removing the stop valve simplifies the structure of the self-priming pump, has a lower cost, and avoids faults and problems caused by the stop valve. Description of the Drawings

[0014] Figure 1 is a perspective view of the self-priming pump without a stop valve;

[0015] Figure 2 is a cross-sectional view of the self-priming pump without a stop valve;

[0016] Figure 3 is a top view of the self-priming pump without a stop valve;

[0017] Figure 4 is Figure 2 an enlarged view of the inner ring A;

[0018] Wherein, 1, pump body; 11, water inlet pipe; 12, water outlet pipe; 13, water inlet channel; 14, impeller chamber; 141, water outlet; 142, opening; 143, through hole; 15, drain port; 2, motor; 21, base; 22, rotating shaft; 3, impeller; 4, support frame; 5, gap; 6, sealing plug; 61, limiting plate; 62, hexagonal block; 7, elastic sheet; 8, spring. Detailed Embodiments

[0019] The following are specific embodiments of the present utility model in combination with the drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0020] As Figure 1 and Figure 4As shown in the figure, the utility model can be realized through the following embodiments: A self-priming pump without a stop valve, comprising a pump body 1 and a motor 2. A base 21 is provided on the motor 2, a rotating shaft 22 is installed inside the motor 2, the pump body 1 is installed on the base 21, a water inlet pipe 11 and a water outlet pipe 12 are installed on the pump body 1, a water inlet channel 13 is arranged inside the pump body 1, the water inlet channel 13 is connected to an impeller chamber 14, an impeller 3 is arranged inside the impeller chamber 14, the impeller 3 is connected to the rotating shaft 22, a water outlet 141 is arranged on the impeller chamber 14, an opening 142 is formed on the left side of the impeller chamber 14, and a support frame 4 is installed between the opening 142 and the motor 2.

[0021] The impeller chamber 14 reduces the space where the impeller 3 is located, so that the air to be discharged when the impeller 3 rotates is small, the threshold for forming a vacuum is reduced, and the self-priming ability of the self-priming pump is improved; the water inlet channel 13 is directly connected to the impeller chamber 14, so that the impeller 3 can directly pump water into the pump body 1 inside the impeller chamber 14, improving the water pumping ability of the self-priming pump; the water outlet 141 is used to connect the impeller chamber 14 and the pump body 1, so that the water flow can enter the pump body 1 and be sent out of the pump body 1; the opening 142 provided in the impeller chamber 14 is convenient for casting and processing the pump body 1, the water inlet channel 13 inside the pump body 1, and the impeller chamber 14, and is also convenient for maintaining and cleaning the impeller chamber 14.

[0022] As Figure 2 and Figure 3 shown, the water outlet 141 is inclined to the left, and there is a gap 5 between the water outlet 141 and the water outlet pipe 12. The water outlet 141 inclined to the left is in the same direction as the rotation direction of the impeller 3, which is convenient for the water flow to flow out of the impeller chamber 14 and be discharged from the pump body 1 through the water outlet pipe 12.

[0023] As Figure 2 shown, a through hole 143 is provided below the impeller chamber 14. The through hole 143 is used to break through the barrier between the pump body 1 and the impeller chamber 14. When the self-priming pump stops working, the remaining water in the impeller chamber 14 can flow into the pump body 1.

[0024] As Figure 1 and Figure 2 shown, a drain port 15 is provided on the pump body 1, a sealing plug 6 is installed on the drain port 15, and the sealing plug 6 is threadedly connected to the drain port 15. The drain port 15 is used to drain the remaining water in the pump body 1 when the self-priming pump stops working, preventing the remaining water from causing scale or bacteria growth in the pump body 1, improving the service life of the pump body 1, and the threaded connection between the sealing plug 6 and the drain port 15 makes the sealing between the sealing plug 6 and the drain port 15 relatively strong.

[0025] As Figure 1 and Figure 2As shown, a limiting plate 61 is provided on the sealing plug 6, and a hexagonal block 62 is provided on the limiting plate 61. The limiting plate 61 is used to limit the sealing plug 6 to prevent the sealing plug 6 from being inserted too deep into the drain port 15, which may cause the sealing plug 6 to be unable to be removed. At the same time, the contact surface between the sealing plug 6 and the drain port 15 becomes more tortuous, improving the sealing performance. The hexagonal block 62 is used to disassemble and install the sealing plug 6 with tools such as a wrench, facilitating the cleaning of the water flow in the pump body 1.

[0026] As Figure 2 and Figure 4 shown, an elastic piece 7 is provided between the impeller 3 and the rotating shaft 22, and a spring 8 is provided outside the elastic piece 7. The elastic piece 7 and the spring 8 are provided to absorb the axial movement generated when the impeller 3 rotates, reducing noise generation.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0028] Although various terms are used more frequently herein, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A self-priming pump without a stop valve, comprising a pump body (1) and a motor (2). A base (21) is provided on the motor (2), a rotating shaft (22) is installed in the motor (2), and the pump body (1) is installed on the base (21). It is characterized in that, A water inlet pipe (11) and a water outlet pipe (12) are installed on the pump body (1). An inlet water channel (13) is arranged inside the pump body (1). The inlet water channel (13) is connected to an impeller chamber (14). An impeller (3) is arranged inside the impeller chamber (14). The impeller (3) is connected to a rotating shaft (22). An outlet (141) is arranged on the impeller chamber (14). An opening (142) is formed on the left side of the impeller chamber (14). A support frame (4) is installed between the opening (142) and the motor (2).

2. The self-priming pump removing a globe valve according to claim 1, wherein The outlet (141) is inclined to the left, and there is a gap (5) between the outlet (141) and the water outlet pipe (12).

3. The self-priming pump for removing a globe valve according to claim 1, characterized in that, A through hole (143) is formed below the impeller chamber (14).

4. The self-priming pump for removing a globe valve according to claim 1, wherein, A drain port (15) is formed on the pump body (1). A sealing plug (6) is installed on the drain port (15). The sealing plug (6) is threadedly connected to the drain port (15).

5. The self-priming pump removing a stop valve according to claim 4, characterized in that, A limiting plate (61) is arranged on the sealing plug (6), and a hexagonal block (62) is arranged on the limiting plate (61).

6. The self-priming pump removing a globe valve according to claim 1, characterized in that, An elastic sheet (7) is arranged between the impeller (3) and the rotating shaft (22), and a spring (8) is arranged outside the elastic sheet (7).

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