CN206268088U - A kind of high-temperature water self priming pump - Google Patents

Abstract

The utility model discloses a high-temperature water self-priming pump, which comprises a motor, a pump body and a buffer liquid bag. The pump body is provided with a liquid inlet channel and a pump chamber, and the pump chamber includes an impeller chamber, a pressure-stabilizing gas-liquid separation chamber and a liquid storage chamber. ;The upper end of the pump body is provided with an outlet seat, and the outlet seat is connected with the pressure-stabilizing gas-liquid separation chamber; the buffer liquid bag is provided with an inlet seat and a lower outlet, and the liquid inlet channel is connected with the lower outlet of the buffer liquid bag; There is a curved pipe in the room, the curved pipe is connected with the impeller chamber, the pressure-stabilizing gas-liquid separation chamber is connected with the liquid storage chamber, and the liquid storage chamber is connected with the impeller chamber; A coupling is arranged on the shaft, and the other end of the coupling is connected with the pump shaft. The high-temperature water self-priming pump adopts the design of the buffer liquid bag and the elbow to achieve the function of buffering gas storage and exhausting after the event, so as to avoid the high-temperature water flashing and valve aging affecting the water absorption of the pump, and can solve the problem of water absorption at 90 °C , the problem that ordinary self-priming pumps cannot work normally; at the same time, the failure rate of water pumps is reduced, the structure is simple, reasonable, practical, and the manufacturing cost is low.

Description

A high temperature water self-priming pump

technical field

The utility model relates to the technical field of water pumps, in particular to a high-temperature water self-priming pump.

Background technique

Ordinary self-priming pump adopts the pump body structure with axial liquid return. After the pump is started normally, the impeller will suck the liquid stored in the suction chamber and the air in the suction pipeline together. After the gas-liquid is mixed, it enters the pressure-stabilized gas-liquid separation chamber. At this time, due to the sudden decrease of the flow rate, the lighter gas is separated from the mixed gas-liquid, and is discharged through the outlet of the pump body, and the liquid returns to the liquid storage chamber. Since the ordinary self-priming pump adopts a stable pressure gas-liquid separation chamber structure to separate gas and adopts a flapper structure to store liquid, when it is used in a high-temperature hot water (90°C) environment, two problems arise: (1) high-temperature water enters the stable After the gas-liquid separation chamber is compressed, due to the sudden drop in pressure, flash vaporization occurs, causing the water pump to not discharge water; (2) The valve is prone to aging due to high temperature, which in turn affects the water storage in the water chamber, causing the pump to fail to absorb water. The utility model patent achieves the purpose of exhausting and stabilizing pressure and separating gas after the event by modifying the structure of the pump body, and replaces the valve with a buffer liquid bag, which greatly reduces the failure rate of the water pump.

Utility model content

In view of this, the purpose of this utility model is to propose a high-temperature water self-priming pump. The high-temperature water self-priming pump solves the problem of high-temperature water flashing and easy aging of the valve by adding a buffer liquid bag and an air distribution chamber elbow design. Affect the water pump suction problem.

Based on the above purpose, the utility model provides a high-temperature water self-priming pump, which includes a motor, a pump body and a buffer liquid bag. The pump body is provided with a liquid inlet passage and a pump chamber, and the pump chamber includes an impeller chamber, a pressure stabilizing A gas-liquid separation chamber and a liquid storage chamber; an outlet seat is provided on the upper end of the pump body, and the outlet seat communicates with the pressure-stabilizing gas-liquid separation chamber; the buffer liquid bag is provided with an inlet seat and a lower outlet, so that The liquid inlet end of the liquid inlet channel is arranged outside the pump body and communicates with the lower outlet of the buffer bag, and the liquid outlet end of the liquid inlet channel is arranged in the pump body and connected to the impeller The room is connected; the pressure-stabilizing gas-liquid separation chamber is provided with an elbow, the upper side of the elbow is provided with an exhaust port, and the lower side of the elbow is provided with a drain port, and the elbow is connected with the impeller chamber connected, the pressure-stabilizing gas-liquid separation chamber communicates with the liquid storage chamber, and the liquid storage chamber communicates with the lower side of the impeller chamber through a return hole; the impeller chamber is provided with an impeller, and the pump chamber is provided with a pump shaft, the impeller is arranged at the end of the pump shaft, and is arranged at the outlet port of the inlet passage, and a coupling is arranged on the motor shaft, and the other end of the coupling is connected to the pump shaft connect.

Preferably, the high-temperature water self-priming pump also includes a pump casing, a bearing and a bearing body, the bearing and the pump shaft are arranged in the bearing body, the bearing is fixedly connected to the pump shaft, and the bearing is connected to the pump shaft. The bearing body is fixedly connected, and the bearing body is arranged at the opening of the impeller chamber and connected with the pump casing.

Preferably, the pump cavity includes a partition placed horizontally, the pressure-stabilizing gas-liquid separation chamber is arranged above the partition, the liquid storage chamber is arranged below the partition, and the partition A through hole is opened on the top to communicate the pressure-stabilizing gas-liquid separation chamber with the liquid storage chamber, and the impeller chamber is arranged in the pump casing.

Further preferably, the high-temperature water self-priming pump also includes a mechanical seal and a seal cover, the mechanical seal is arranged on the pump shaft, and the mechanical seal is located between the pump casing and the impeller; the bearing body There is a sealing cover on it.

Preferably, the exhaust port on the elbow faces upward, and the drain port on the elbow faces downward.

Further preferably, the gas-liquid mixture in the impeller chamber enters the elbow, and after the gas-liquid separation of the elbow, the gas is discharged out of the pump through the exhaust port; the liquid flows back through the pressure-stabilizing gas-liquid separation chamber The hole returns to the reservoir.

Preferably, the number of the reflux holes is 2.

Preferably, the inlet seat is arranged at the upper end of the side of the buffer liquid bag, and water is stored in the buffer liquid bag.

The working principle of the high-temperature water self-priming pump of the utility model: when the water pump is started, the pre-stored water in the buffer liquid bag will first enter the impeller chamber, and then reach the pressure-stabilizing gas-liquid separation chamber through the elbow, and the pre-stored water will flow back to the storage chamber. In the liquid chamber, part of it is discharged through the discharge port; as the water in the buffer liquid bag decreases, the air in the pipe in the water suction pipe of the pool enters the upper part of the buffer liquid bag due to negative pressure, and the buffer liquid bag realizes part of the air storage and buffering function at this time, reducing The exhaust pressure of the back-end water pump, the air that cannot be stored in the buffer liquid bag enters the impeller chamber through the suction port of the water pump, and after fully mixing with the water entering the impeller in the liquid storage chamber, it is discharged to the pressure-stabilizing gas-liquid separation elbow, and the gas-liquid mixture Effective separation under no pressure relief environment, the gas is discharged from the outlet of the elbow to the outside of the pump in the pressure-stabilizing gas-liquid separation chamber; the liquid flows back to the liquid storage chamber through the return hole of the pressure-stabilizing gas-liquid separation chamber, and then enters the impeller chamber through the return hole . Circulate in this way until all the air in the pipeline is exhausted, and the high-temperature self-priming pump will turn to normal work. When the water pump stops, the high-level water flows back into the pool due to gravity. At this time, the air on the top of the buffer liquid bag is discharged from the buffer liquid bag due to the negative pressure, and the water in the outlet pipe section of the water pump flows back into the buffer liquid bag due to the negative pressure, so that the buffer The liquid bag is filled with water again. At this time, the buffer liquid bag realizes the exhaust function after the event, and also ensures that the liquid storage is stable and does not leak, and the water pump is not short of water when it is started.

After the high-temperature water self-priming pump developed and designed by the utility model is used in a high-temperature pool environment, the effect is very good through practice tests, and the phenomenon that the common self-priming pump cannot suck water does not appear.

The high-temperature water self-priming pump of the utility model is designed by adding a buffer liquid bag and a pressure-stabilizing elbow, so as to avoid the problem of high-temperature water flashing and valve aging affecting water absorption of the pump. The buffer liquid bag is designed at the inlet of the high-temperature water self-priming pump. The buffer liquid bag has an inlet seat and a lower outlet. The top of the buffer bag avoids too much gas in the pipeline from affecting the pump’s water absorption, so as to achieve the buffer effect. When the high-temperature water self-priming pump stops, the high-level water flows back into the pool. At this time, the air on the top of the buffer bag passes through the buffer first. The bladder inlet seat is discharged, so as to realize the exhaust function after the event, to ensure the stability of the liquid storage without leakage, and to ensure that the water pump does not lack water when the pump is started; Effective separation under pressure.

It can be seen from the above that the high-temperature water self-priming pump provided by the utility model is designed by adding a buffer liquid bag and a pressure-stabilizing elbow, so as to avoid high-temperature water flashing and valve aging affecting water absorption of the pump, and can solve 90 ℃ High temperature water centrifugal pump cannot be sucked up; at the same time, the failure rate of the water pump is reduced, the structure is simple, reasonable, practical, and the manufacturing cost is low.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the high-temperature water self-priming pump of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

As an example, the overall structure schematic diagram of the high-temperature water self-priming pump provided by the utility model is shown in FIG. 1 .

A high-temperature water self-priming pump, including a motor 1, a pump body 2 and a buffer liquid bag 3, the pump body 2 is provided with a liquid inlet channel 4 and a pump cavity (not shown in the figure), the pump cavity includes an impeller chamber 5, a stabilizer Pressure gas-liquid separation chamber 6 and liquid storage chamber 7; an outlet seat 8 is provided on the upper end of the pump body 2, and the outlet seat 8 communicates with the pressure-stabilizing gas-liquid separation chamber 6; the buffer liquid bag 3 is provided with an inlet seat 9 and a lower outlet 10 , the liquid inlet end of the liquid inlet channel 4 is set outside the pump body 2, and communicates with the lower outlet 10 of the buffer liquid bag 3, and the liquid outlet end of the liquid inlet channel 4 is set in the pump body 2, and communicates with the impeller chamber 5 The pressure-stabilizing gas-liquid separation chamber 6 is provided with an elbow 11, and the upper side of the elbow 11 is provided with an exhaust port 12, and the lower side of the elbow 11 is provided with a drain outlet 13, and the elbow 11 is communicated with the impeller chamber 5, stabilizing The pressure gas-liquid separation chamber 6 communicates with the liquid storage chamber 7, and the liquid storage chamber 7 communicates with the lower side of the impeller chamber 5 through the return hole 14; It is arranged at the end of the pump shaft 16 and at the liquid outlet port of the liquid inlet channel 4 . A shaft coupling 17 is arranged on the motor shaft, and the other end of the shaft coupling 17 is connected with the pump shaft 16 .

In this embodiment, the buffer liquid bag 3 is arranged at the inlet of the high-temperature water self-priming pump. The buffer liquid bag 3 drains water and stores air when the water pump is started, and exhausts and stores water after the water pump stops, which plays the role of exhaust after the event and ensures that the liquid is stored. It is stable and does not leak, ensuring that the water pump does not lack water when it is started.

In addition, the buffer liquid bag 3 is provided with an inlet seat 9 and a lower outlet 10, the inlet seat 9 is arranged on the side upper end of the buffer liquid bag 3, the position of the inlet seat 9 is higher than the position of the lower outlet 10, and the lower outlet 10 is connected to the lower outlet 10. The bottom of the buffer capsule 3 is even, which can ensure that the water in the buffer capsule 3 is fully utilized. The inlet seat 9 is used to absorb the water in the pipeline, and the lower outlet 10 is connected with the liquid inlet end of the liquid inlet channel 4 , so that the water in the buffer liquid bag 3 enters the impeller chamber 5 through the liquid inlet channel 4 .

Water is stored in the buffer liquid bag 3, and the water surface is flush with the inlet seat 9. When the pump is started, the water in the buffer liquid bag 3 will first pass through the lower outlet 10, enter the impeller chamber 5 from the liquid inlet channel 4, and then pass through the The elbow 11 reaches the pressure-stabilizing gas-liquid separation chamber 6, and finally falls back into the liquid storage chamber 7; during the subsequent exhausting process of the high-temperature water self-priming pump, the water in the liquid storage chamber 7 will enter the impeller chamber 5 through the return hole 14 Participate in the exhaust process.

In this embodiment, preferably, the number of the return holes 14 is two, which can ensure that the water in the liquid storage chamber 7 enters the impeller chamber 5 smoothly. In this embodiment, the elbow 11 is designed at the outlet of the impeller chamber 5, which can ensure that the gas-liquid mixture discharged from the impeller chamber 5 enters the elbow 11 without pressure release, and effectively separates the gas and liquid. In the existing self-priming pump, the gas-liquid mixture in the impeller chamber directly enters the pressure-stabilized gas-liquid separation chamber. Due to the relatively large space, the pressure will drop suddenly and flash vaporization will occur, which will affect the normal water absorption of the high-temperature water self-priming pump.

In this embodiment, preferably, the exhaust port 12 on the elbow 11 faces upward, and the drain port 13 on the elbow 11 faces downward; further preferably, the exhaust port 12 and the drain port 13 are on the same On a straight line, preferably, the exhaust port 12 is arranged on the upper top of the elbow 11 , and the drain outlet 13 is arranged on the lower side of the elbow 11 , and is on the same straight line as the exhaust hole 12 .

When the high-temperature water self-priming pump is working, the gas-liquid mixture in the impeller chamber 5 enters the elbow 11, and after the gas-liquid separation of the elbow 11, the gas goes out through the exhaust port 12 and the pressure-stabilizing gas-liquid separation chamber; the liquid passes through The drain port 13 enters the pressure-stabilizing gas-liquid separation chamber 6 and falls back to the liquid storage chamber 7 .

The high-temperature water self-priming pump of this embodiment is designed by adding the buffer liquid bag 3 and the pressure-stabilizing elbow 11, so as to avoid the problem of high-temperature water flashing and valve aging affecting the water absorption of the pump. The buffer liquid capsule 3 is designed at the inlet of the high-temperature water self-priming pump. The buffer liquid capsule 3 has an inlet seat 9 and a lower outlet 10. When the high-temperature water self-priming pump is started, high-temperature water is sucked from the inlet seat 9, and the pipeline is drained after a steady flow. The air inside is stored on the top of the buffer bag 3, so as to avoid too much gas in the pipeline from affecting the pump’s water absorption, so as to achieve the buffering effect. When the high-temperature water self-priming pump stops, the high-level water flows back into the pool. The air at the top is first discharged through the inlet seat on the buffer liquid bag 3 due to the negative pressure, so as to achieve the exhaust effect after the event, and ensure the stability of the liquid storage without leakage, and ensure that the water pump does not lack water when starting; the elbow 11 is designed in the impeller chamber 5 The purpose of the discharge port is to ensure that the gas-liquid mixture is effectively separated without pressure relief. The separated gas is discharged through the discharge port, and the liquid flows back to the edge of the impeller to start circulation.

As shown in Figure 1 , the pump chamber includes a partition 21 placed horizontally, the pressure-stabilizing gas-liquid separation chamber 6 is arranged above the partition 21, the liquid storage chamber 7 is arranged below the partition 21, and on the partition 21 A through hole 22 is opened to connect the pressure-stabilizing gas-liquid separation chamber 6 with the liquid storage chamber 7 , and the impeller chamber 5 is arranged in the pump casing 18 . The through hole 22 enables the liquid in the pressure-stabilizing gas-liquid separation chamber 6 to flow back smoothly and timely to the liquid outlet chamber 7 under the action of gravity to participate in the subsequent circulation flow and improve the efficiency of the high-temperature water self-priming pump for gas-liquid separation.

The high-temperature water self-priming pump also includes a pump casing 18, a bearing 19 and a bearing body 20, the bearing 19 and the pump shaft 16 are arranged in the bearing body 20, the bearing 19 is fixedly connected to the pump shaft 16, and the bearing 19 is fixed to the bearing body 20 Connected, the bearing body 20 is arranged at the opening of the impeller chamber 5 and connected with the pump casing 18 . The installed bearing 19 and the bearing body 20 can reduce the wear of the pump shaft 16 when they rotate on the shaft, prolong the service time, and facilitate maintenance and replacement at the same time.

The high-temperature water self-priming pump also includes a mechanical seal 23 and a seal cover 24, the mechanical seal 23 is arranged on the pump shaft 16, and the mechanical seal 23 is located between the pump casing 18 and the impeller 15; the bearing body 20 is provided with a seal cover 24 . The use of mechanical seals and seal covers not only prevents water leakage from the pump body, but also reduces wear on the pump shaft.

The working principle of the high-temperature water self-priming pump in this embodiment is: when the water pump is started, the pre-stored water in the buffer liquid bag will first enter the impeller chamber, and then reach the pressure-stabilizing gas-liquid separation chamber through the elbow, and the pre-stored water will return to the In the liquid storage room, part of it is discharged through the discharge port; as the water in the buffer liquid bag decreases, the air in the pipeline in the water suction pipe of the pool enters the upper part of the buffer liquid bag due to negative pressure, and the buffer liquid bag realizes part of the air storage and buffering function at this time. Reduce the exhaust pressure of the back-end water pump, and the air that cannot be stored in the buffer bag enters the impeller chamber through the suction port of the water pump, and after being fully mixed with the water entering the impeller from the liquid storage chamber, it is discharged to the pressure-stabilizing gas-liquid separation elbow, and the gas-liquid The mixture is effectively separated under the environment of no pressure relief, and the gas is discharged from the pump through the exhaust port of the elbow; the liquid flows back to the liquid storage chamber through the return hole, and then enters the impeller chamber through the return hole. Circulate in this way until all the air in the pipeline is exhausted, and the high-temperature self-priming pump will turn to normal work. When the water pump stops, the high-level water flows back into the pool due to gravity. At this time, the air on the top of the buffer liquid bag is discharged from the buffer liquid bag due to the negative pressure, and the water in the outlet pipe section of the water pump flows back into the buffer liquid bag due to the negative pressure, so that the buffer The liquid bag is filled with water again. At this time, the buffer liquid bag realizes the exhaust function after the event, and also ensures that the liquid storage is stable and does not leak, and the water pump is not short of water when it is started.

The high-temperature water self-priming pump provided by the utility model is designed by adding a buffer liquid bag and a pressure-stabilizing elbow, so as to avoid the problem of high-temperature water flashing and valve aging affecting the water absorption of the pump, and can solve the problem of ordinary water pumps under the condition of 90°C high-temperature water. The problem of not being able to work normally; at the same time, the failure rate of the water pump is reduced, the structure is simple, reasonable, practical, and the manufacturing cost is low.

It should be noted that all expressions using "first" and "second" in the embodiments of the present utility model are used to distinguish two entities with the same name but different parameters or different parameters. It can be seen that "first" and "second" " is only for the convenience of expression, and should not be understood as a limitation on the embodiments of the present utility model, and the subsequent embodiments will not explain them one by one.

Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is exemplary only, and is not intended to imply that the scope of the present disclosure (including claims) is limited to these examples; under the idea of the present utility model, the above embodiments Or combinations of technical features in different embodiments are also possible, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, within the spirit and principle of the present utility model, any omission, modification, equivalent replacement, improvement, etc. should be included in the protection scope of the present utility model.

Claims (8)

1. A high-temperature water self-priming pump, characterized in that it comprises a motor, a pump body and a buffer liquid bag, the pump body is provided with a liquid inlet channel and a pump cavity, and the pump cavity comprises an impeller chamber, a pressure-stabilizing gas-liquid separation chamber and liquid storage chamber; an outlet seat is provided on the upper end of the pump body, and the outlet seat communicates with the pressure-stabilizing gas-liquid separation chamber; the buffer liquid bag is provided with an inlet seat and a lower outlet, and the liquid inlet The liquid inlet end of the channel is arranged outside the pump body and communicates with the lower outlet of the buffer liquid bag, and the liquid outlet end of the liquid inlet channel is arranged in the pump body and communicates with the impeller chamber; The pressure-stabilizing gas-liquid separation chamber is provided with an elbow, the upper side of the elbow is provided with an exhaust port, and the lower side of the elbow is provided with a drain outlet, and the elbow is connected with the impeller chamber. The pressure-stabilizing gas-liquid separation chamber communicates with the liquid storage chamber, and the liquid storage chamber communicates with the lower side of the impeller chamber through a return hole; the impeller chamber is provided with an impeller, and the pump body is provided with a pump shaft. The impeller is arranged at the end of the pump shaft and at the liquid outlet port of the liquid inlet channel. A coupling is provided on the motor shaft, and the other end of the coupling is connected with the pump shaft. 2. The high-temperature water self-priming pump according to claim 1, characterized in that, the high-temperature water self-priming pump also includes a pump casing, a bearing and a bearing body, and the bearing and the pump shaft are arranged in the bearing body , the bearing is fixedly connected with the pump shaft, the bearing is fixedly connected with the bearing body, and the bearing body is arranged at the opening of the impeller chamber and connected with the pump casing. 3. The high-temperature water self-priming pump according to claim 1, characterized in that, the pump cavity includes a partition placed horizontally, the pressure-stabilizing gas-liquid separation chamber is arranged above the partition, and the The liquid storage chamber is arranged under the partition, and a through hole is opened on the partition to communicate the pressure-stabilizing gas-liquid separation chamber with the liquid storage chamber, and the impeller chamber is arranged in the pump casing. 4. The high-temperature water self-priming pump according to claim 2, characterized in that, the high-temperature water self-priming pump also includes a mechanical seal and a seal cover, the mechanical seal is arranged on the pump shaft, and the mechanical seal is located at Between the pump casing and the impeller; the bearing body is provided with a sealing cover. 5. The high-temperature water self-priming pump according to claim 1, characterized in that, the exhaust port on the elbow faces upwards, and the drain port on the elbow faces downwards. 6. The high-temperature water self-priming pump according to claim 5, characterized in that the gas-liquid mixture in the impeller chamber enters the elbow, and after the gas-liquid separation of the elbow, the gas is discharged through the exhaust port for pressure-stabilizing gas-liquid separation The liquid enters the pressure-stabilizing gas-liquid separation chamber through the drain port and falls back to the liquid storage chamber. 7. The high-temperature water self-priming pump according to claim 1, characterized in that the number of the return holes is two. 8 . The high-temperature water self-priming pump according to claim 1 , wherein the inlet seat is arranged at the upper end of the side of the buffer liquid bag, and water is stored in the buffer liquid bag.