CN212867951U - Vertical guide vane type self-priming centrifugal pump - Google Patents
Vertical guide vane type self-priming centrifugal pump Download PDFInfo
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- CN212867951U CN212867951U CN202021637437.3U CN202021637437U CN212867951U CN 212867951 U CN212867951 U CN 212867951U CN 202021637437 U CN202021637437 U CN 202021637437U CN 212867951 U CN212867951 U CN 212867951U
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Abstract
The utility model discloses a vertical guide vane formula is from inhaling centrifugal pump belongs to the centrifugal pump, needs to exhaust the pump before current centrifugal pump starts and irritates the pump, and horizontal structure area is big, the utility model discloses a vertical setting of pump shaft makes the centrifugal pump constitute vertical structure, and the upper end of pump shaft is connected with the motor of locating pump body top, and the lower extreme and the centrifugal impeller of pump shaft are connected, and the entry of centrifugal impeller is down and communicate with the water inlet, the sealed seat of assembly is rotated with the pump shaft seal to the configuration on the pump cover, and the pump body, pump cover, sealed seat, stator constitute the cavity that not only gas-liquid separation chamber but also stock solution chamber communicate. The centrifugal pump forms a vertical structure, so that the occupied area is reduced, and the cost is saved. The inlet of the centrifugal impeller faces downwards and is communicated with the water inlet to form a downdraft structure, the guide vane flow channel is used as a diffusion section in normal operation and also used as a backflow hole and an exhaust channel in self-suction, and adverse effects on the efficiency of the centrifugal pump when the backflow hole is independently designed are eliminated.
Description
Technical Field
The utility model belongs to the centrifugal pump, concretely relates to vertical stator formula is from inhaling centrifugal pump with from inhaling function.
Background
The common centrifugal pump has no self-priming function, and must be exhausted before starting. The self-priming centrifugal pump on the market is mainly of a horizontal structure and needs to be provided with a backflow hole and a small gap of a separation tongue. The horizontal structure occupies a large area and has high cost. The return port has a major adverse effect on centrifugal pump efficiency. The small clearance of the isolating tongue causes that the performance parameters of the centrifugal pump can not be adjusted, the working range of the centrifugal pump is limited, and the high noise is easily caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model and the technical task that provides need carry out the defect of exhausting and irritating the pump to the pump before overcoming current centrifugal pump start, provide a vertical stator formula from inhaling centrifugal pump with from inhaling the function.
In order to achieve the above object, the utility model discloses a vertical guide vane formula is from inhaling centrifugal pump, including the pump body, pump cover, stator, centrifugal impeller, pump shaft, the pump body has transversal arrangement's water inlet, delivery port, the pump cover assembly is in pump body upper end, the stator assembly is in the pump body, centrifugal impeller is located in the stator, characterized by: the centrifugal pump is vertically arranged on the pump shaft to form a vertical structure, the upper end of the pump shaft is connected with a motor arranged above the pump body, the lower end of the pump shaft is connected with the centrifugal impeller, an inlet of the centrifugal impeller faces downwards and is communicated with the water inlet, a sealing seat which is in sealed rotating assembly with the pump shaft is arranged on the pump cover, and the pump body, the pump cover, the sealing seat and the guide vane form a cavity which is communicated with the water inlet and the water outlet and is a gas-liquid separation cavity and a liquid storage cavity.
As a preferable technical means: the diffusion section of the guide vane inclines upwards, so that the diffusion section is not only an overflowing flow channel in normal operation, but also a backflow hole and an exhaust channel in self-suction.
As a preferable technical means: the diffuser sections of the guide vanes are symmetrically distributed.
As a preferable technical means: the guide vane is located in the pump body, and a first anti-rotation pin is arranged between the lower end of the guide vane and the pump body; the sealing seat is tubular and extends downwards, and the lower end of the sealing seat presses and holds the guide vane.
As a preferable technical means: the upper end of the guide vane is provided with a guide bearing which surrounds the pump shaft in a clearance fit mode, and a second anti-rotation pin is arranged between the guide bearing and the guide vane; the lower end of the sealing seat presses and holds the guide bearing.
As a preferable technical means: a mechanical seal is assembled between the position of the sealing seat adjacent to the pump cover and the pump shaft; the lower end of the sealing seat is connected with a short pipe communicated with the cavity, the upper end of the sealing seat is provided with a communicating hole, a flushing pipe is connected between the communicating hole and the wall of the inlet, and the cavity is communicated with the inlet through the short pipe, the sealing seat, the communicating hole and the flushing pipe.
As a preferable technical means: the guide vane lower extreme is established uncovered just uncovered diameter is greater than centrifugal impeller's diameter.
As a preferable technical means: centrifugal impeller's lower extreme is equipped with first impeller sealing ring, centrifugal impeller's upper end assembly second impeller sealing ring, correspond on the pump body the open position of stator assembles pump body sealing ring, assemble the stator sealing ring in the stator, pump body sealing ring cover is in outside the first impeller sealing ring, the stator sealing ring cover is in outside the second impeller sealing ring.
As a preferable technical means: the pump body is provided with a high-position water filling port and a low-position water discharging port, and the high-position water filling port and the low-position water discharging port are plugged by detachable plugs.
As a preferable technical means: the pump cover is provided with a motor base, the motor is assembled at the upper end of the motor base, and the motor is connected with the pump shaft through a coupler.
The utility model discloses make the centrifugal pump constitute vertical structure with the vertical setting of pump shaft, reduce area, save the cost.
The utility model discloses the upper end of pump shaft with locate the motor of top is connected, and the lower extreme and the centrifugal impeller of pump shaft are connected, centrifugal impeller's entry down and with the water inlet intercommunication, constitute downdraft structure, the diffuser section when the stator runner is normal operation promptly, return flow hole and exhaust passage when being regarded as certainly again, adverse effect to centrifugal pump efficiency when having eliminated the independent design return flow hole.
The utility model discloses the pump cover is gone up the configuration and is rotated the seal receptacle of assembly with the sealed rotation of pump shaft, and the pump body, pump cover, seal receptacle, stator constitute the cavity that both is the gas-liquid separation chamber and stock solution chamber of intercommunication water inlet, delivery port.
The utility model discloses a centrifugal impeller inhales down, the stator runner goes up diffusion, gas-liquid separation chamber phase combination structure, gaseous smooth discharge when guaranteeing from inhaling saves and separates the little clearance structure of tongue, lets pump performance parameter can adjust, enlarges the working range of centrifugal pump, noise abatement.
The mechanical seal of the utility model is fully washed and cooled; the symmetrical arrangement of the guide vane diffusion sections enables the radial force to be self-balanced, and the operation stability is improved.
Drawings
Fig. 1 is a schematic sectional view of a vertical guide vane type self-priming centrifugal pump of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is an enlarged view of section C of FIG. 1;
the reference numbers in the figures illustrate:
the reference numbers in the figures illustrate: 1-pump body, 2-first impeller sealing ring, 3-centrifugal impeller, 4-guide vane sealing ring, 5-guide vane, 6-short pipe, 7-high water filling port, 8-pump cover, 9-sealing seat, 10-motor seat, 11-motor, 12-coupling, 13-flushing pipe, 14-mechanical seal, 15-pump shaft, 16-mechanical seal cavity, 17-cavity, 18-suction flow channel, 19-guide bearing, 20-diffusion section, 21-spindle nose nut, 22-low water outlet, 23-water inlet, 24-water outlet, 25-first anti-rotation pin, 26-second anti-rotation pin, 28-second impeller sealing ring and 29-pump body sealing ring.
Detailed Description
The present invention will be further explained with reference to the drawings attached to the specification.
As shown in fig. 1-4, the vertical guide vane type self-priming centrifugal pump includes a pump body 1, a pump cover 8, a guide vane 5, a centrifugal impeller 3, a pump shaft 15, a motor base 10, and a motor 11.
The pump body 1 has a water inlet 23 and a water outlet 24 which are transversely arranged.
The motor base 10 and the pump cover 8 are stacked and fastened at the upper end of the pump body 1 through bolts, and a sealing ring is arranged between the pump cover 8 and the pump body 1. Similarly, the fixed sealing positions needing to be sealed at other positions are sealed by adopting standard sealing element O-shaped rings. The motor 11 is assembled and fixed on the upper end of the motor base 10.
The guide vane 5 is assembled in the pump body 1, the centrifugal impeller 3 is positioned in the guide vane 5, and the pump shaft 15 is vertically arranged to enable the centrifugal pump to form a vertical structure. The upper end of the pump shaft 15 is connected with the motor 11 above the pump body 1 through a coupling 12, the coupling is preferably a rigid coupling, and the lower end of the pump shaft 15 is connected with the centrifugal impeller 3 through a key and is fastened at the lower end of the pump shaft by a shaft head nut 21. The inlet of the centrifugal impeller 3 faces downwards and is communicated with the water inlet 23, the pump cover 8 is provided with the sealing seat 9 which is rotationally assembled with the pump shaft in a sealing way, namely, the pump shaft can rotate relative to the sealing seat, the pump body 1, the pump cover 8, the sealing seat 9 and the guide vane 5 form a cavity 17 which is communicated with the water inlet and the water outlet, and the cavity 17 is a gas-liquid separation cavity and a liquid storage cavity.
The structure shown in the figure is that the guide vane 5 and the centrifugal impeller 3 are assembled firstly, and then the pump cover 8, the sealing seat 9 and the mechanical seal 14 are assembled.
The upward inclination of the diffuser 20 of the guide vane 5 makes the diffuser 20 both a flow passage during normal operation and a return hole and an exhaust passage during self-suction. The diffuser sections 20 of the guide vanes are symmetrically distributed, this symmetry preferably being centered symmetrically with respect to the center of the guide vane. The self-balancing of radial force can be realized during the operation, and the operation stability is improved.
Particularly, in order to have compact structure and convenient processing and assembly, the guide vane 5 is positioned in the pump body 1, and a first anti-rotation pin 25 is arranged between the lower end of the guide vane 5 and the pump body so that the guide vane can not rotate relative to the pump body; the seal seat 9 is in the shape of a downwardly extending pipe and forms a sealed mechanical seal chamber 16 therein, and the lower end of the seal seat 9 presses the guide vane 5 to press the guide vane on the pump seat 1, thereby fixing the guide vane.
The upper end of the guide vane 5 is provided with a guide bearing 19 which surrounds the pump shaft in a clearance fit mode, so that deflection and vibration are prevented from being generated when the pump shaft 15 rotates. A second anti-rotation pin 26 is provided between the guide bearing 19 and the guide vane, so that the guide bearing is fixed relative to the guide vane. The lower end of the seal holder 9 presses the guide bearing 19 to press the guide bearing against the guide vane, thereby fixing the guide bearing.
A mechanical seal is assembled between the position of the sealing seat 9 adjacent to the pump cover 8 and the pump shaft 15 to seal the cavity. The lower end of the sealing seat 9 is connected with a short pipe 6 communicated with the cavity, the open end of the short pipe 6 is positioned below the water surface when water is stored in the cavity, a communicating hole is arranged at the upper end of the sealing seat 9, a flushing pipe 13 is connected between the communicating hole and the wall of the inlet, and the cavity 17 is communicated with the inlet through the short pipe 6, a mechanical sealing cavity 16 of the sealing seat 9, the communicating hole and the flushing pipe 13. Particularly, the short pipe 6 is arranged at the lower end of the sealing seat 9, and the opening end of the short pipe 6 is positioned below the water surface when water is stored in the cavity, so that the stability during self-suction is enhanced.
In normal operation, the pressure difference between the high pressure of the liquid storage cavity (cavity 17) and the low pressure of the suction flow channel 18 is utilized to form liquid flow to flush and cool the mechanical seal 14. During self-suction, the liquid flow is formed by utilizing the pressure difference between the normal pressure of the liquid storage cavity (cavity 17) and the vacuum of the suction flow channel 18 to wash and cool the mechanical seal 14.
Also in order to facilitate the assembly, the lower end of the guide vane 5 is provided with an opening, and the diameter of the opening is larger than that of the centrifugal impeller 3, so that the centrifugal impeller is assembled into the guide vane through the opening.
In order to ensure the matching between the centrifugal impeller and the guide vane, the lower end of the centrifugal impeller is assembled with a first impeller sealing ring 2 through a set screw, the upper end of the centrifugal impeller is assembled with a second impeller sealing ring 28 through the set screw, a pump body sealing ring 29 is assembled on the pump body 1 through a bolt corresponding to the opening position of the guide vane 5, and a guide vane sealing ring 4 is assembled in the guide vane 5 through a bolt. The pump body sealing ring 29 is sleeved outside the first impeller sealing ring 2, and the guide vane sealing ring 4 is sleeved outside the second impeller sealing ring 28. Small gaps are formed between the pump body sealing ring 29 and the first impeller sealing ring 2 and between the guide vane sealing ring 4 and the second impeller sealing ring 28, and a large amount of internal leakage is prevented during operation, so that the operation efficiency is improved.
In addition, a high-position water filling opening 7 is arranged near the outlet flange on the pump body, a low-position water discharging opening 22 is arranged at the lower part of the pump body, and the high-position water filling opening and the low-position water discharging opening are plugged by detachable plugs. The high-position water filling port is used for filling liquid storage into the pump, and the low-position water discharging port is used for emptying the pump body. The plug preferably plugs the high-position water filling port and the low-position water discharging port through sealing threads.
When the pump works for the first time, liquid is filled into the pump body 1 through the high-position water filling port, and then the pump body is blocked; when the pump works, liquid is stored at the bottom of the pump body. When the pump shaft 15 is driven by the motor 11 to rotate, the pump shaft 15 drives the centrifugal impeller 3 to rotate, the suction flow channel 18 is automatically and continuously pumped, gas and liquid are mixed at the outlet of the centrifugal impeller, a gas-liquid mixture enters the cavity through the upper side of the guide vane flow channel, gas and liquid are separated in the cavity, the gas floats upwards and is discharged through the water outlet 24, the liquid sinks to return to the outlet of the centrifugal impeller through the lower side of the guide vane flow channel and is continuously mixed with the gas, the circulation is performed in the above way until the air is completely pumped away, the suction flow channel is filled with the liquid, and self-suction is realized, wherein the guide vane flow channel not only serves as a diffusion section in. During normal operation, liquid is continuously sucked and flowed out under the action of the centrifugal force of the centrifugal impeller 3.
Claims (10)
1. Vertical guide vane formula is from inhaling centrifugal pump, including the pump body (1), pump cover (8), stator (5), centrifugal impeller (3), pump shaft (15), the pump body (1) has transverse arrangement's water inlet, delivery port, pump cover (8) assembly is in the pump body upper end, stator (5) assembly is in the pump body, centrifugal impeller (3) are located in stator (5), characterized by: the centrifugal pump is vertically arranged on the pump shaft (15) to form a vertical structure, the upper end of the pump shaft is connected with a motor arranged above the pump body, the lower end of the pump shaft is connected with the centrifugal impeller, an inlet of the centrifugal impeller (3) faces downwards and is communicated with the water inlet, a sealing seat (9) assembled with the pump shaft in a sealed and rotating mode is arranged on the pump cover (8), and the pump body (1), the pump cover (8), the sealing seat (9) and the guide vane (5) form a cavity communicated with the water inlet and the water outlet and are a gas-liquid separation cavity and a liquid storage cavity.
2. The vertical vane self-priming centrifugal pump of claim 1, wherein: the diffuser section (20) of the guide vane is inclined upwards, so that the diffuser section (20) is not only an overflowing flow channel in normal operation, but also a backflow hole and an exhaust channel in self-suction.
3. The vertical vane self-priming centrifugal pump of claim 1, wherein: the diffuser sections (20) of the guide vanes are symmetrically distributed.
4. The vertical vane self-priming centrifugal pump of claim 1, wherein: the guide vane is located in the pump body, and a first anti-rotation pin is arranged between the lower end of the guide vane and the pump body; the sealing seat (9) is tubular and extends downwards, and the lower end of the sealing seat presses and holds the guide vane.
5. The vertical vane self-priming centrifugal pump of claim 4, wherein: a guide bearing (19) surrounding the pump shaft in a clearance fit mode is assembled at the upper end of the guide vane, and a second anti-rotation pin is arranged between the guide bearing (19) and the guide vane; the lower end of the sealing seat presses and holds the guide bearing (19).
6. The vertical vane self-priming centrifugal pump of claim 4, wherein: a mechanical seal is assembled between the position of the sealing seat (9) adjacent to the pump cover and the pump shaft; the lower end of the sealing seat (9) is connected with a short pipe (6) communicated with the cavity, a communicating hole is formed in the upper end of the sealing seat (9), a flushing pipe (13) is connected between the communicating hole and the wall of the inlet, and the cavity is communicated with the inlet through the short pipe (6), the sealing seat (9), the communicating hole and the flushing pipe (13).
7. The vertical vane self-priming centrifugal pump of claim 1, wherein: the lower end of the guide vane (5) is provided with an opening, and the diameter of the opening is larger than that of the centrifugal impeller.
8. The vertical guide vane self-priming centrifugal pump of claim 7, wherein: centrifugal impeller's lower extreme is equipped with first impeller sealing ring, centrifugal impeller's upper end assembly second impeller sealing ring, correspond on the pump body the open position of stator (5) assembles pump body sealing ring, assemble the stator sealing ring in stator (5), pump body sealing ring cover is in outside the first impeller sealing ring, the stator sealing ring cover is in outside the second impeller sealing ring.
9. The vertical vane self-priming centrifugal pump of claim 1, wherein: the pump body is provided with a high-position water filling port and a low-position water discharging port, and the high-position water filling port and the low-position water discharging port are plugged by detachable plugs.
10. The vertical vane self-priming centrifugal pump of claim 1, wherein: the pump cover is provided with a motor base, the motor is assembled at the upper end of the motor base, and the motor is connected with the pump shaft through a coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021637437.3U CN212867951U (en) | 2020-08-07 | 2020-08-07 | Vertical guide vane type self-priming centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021637437.3U CN212867951U (en) | 2020-08-07 | 2020-08-07 | Vertical guide vane type self-priming centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN212867951U true CN212867951U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021637437.3U Active CN212867951U (en) | 2020-08-07 | 2020-08-07 | Vertical guide vane type self-priming centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997907A (en) * | 2020-08-07 | 2020-11-27 | 浙江佳力科技股份有限公司 | Vertical guide vane type self-priming centrifugal pump |
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2020
- 2020-08-07 CN CN202021637437.3U patent/CN212867951U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997907A (en) * | 2020-08-07 | 2020-11-27 | 浙江佳力科技股份有限公司 | Vertical guide vane type self-priming centrifugal pump |
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