CN216788716U

CN216788716U - Multistage high-pressure pump

Info

Publication number: CN216788716U
Application number: CN202220192591.7U
Authority: CN
Inventors: 胡兴; 涂定国
Original assignee: Chongqing Tianzhiyuan Machinery Co ltd
Current assignee: Chongqing Tianzhiyuan Machinery Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-06-21
Anticipated expiration: 2032-01-24

Abstract

The utility model discloses a multistage high-pressure pump which comprises a pump shell and a base, wherein the pump shell and the base are connected in a sealing mode to form a pump cavity, a connecting shaft is arranged in the pump cavity, one end of the connecting shaft is connected with the pump shell, the other end of the connecting shaft is connected with the base, a plurality of impellers are installed on the connecting shaft, volute casings are arranged between every two adjacent impeller casings, first sealing rings are arranged between the outer rings of the adjacent volute casings to form sealing connection, the impellers and the volute casings form communicated water channels, and the impellers rotate to pressurize water entering through one-way valves step by step. The pump has the advantages that the impeller and the volute are arranged, water is pressurized step by step through the matching of the multistage impeller and the pump shell, the pump lift is increased, the pump lift required by irrigation in high mountain areas is met, and the pump can also be used for fire fighting of high buildings.

Description

Multistage high-pressure pump

Technical Field

The utility model belongs to the technology of water pumps, and particularly relates to a multistage high-pressure pump.

Background

The lift of current single cylinder general gasoline engine water pump is mostly below 90M, and the mode of many water pump transfer is adopted in the agricultural irrigation in mountain area, pumps the field soil on the mountain to the water source that lies in the mountain, can not use a water pump to accomplish the operation of drawing water, leads to river water to take place the loss in transit many times to increase equipment cost and cost of labor.

Disclosure of Invention

The utility model aims to provide a multi-stage high-pressure pump, which aims to solve the problems that water resources are lost in multiple transfer and equipment cost and labor cost are increased due to the fact that multiple water pumps are required to transfer in the conventional high-mountain farmland irrigation.

In order to achieve the purpose, the utility model adopts the following technical scheme.

The utility model provides a multistage high-pressure pump, includes pump case and base, the pump case with base sealing connection forms the pump cavity, be provided with the connecting axle in the pump cavity, connecting axle one end is connected the other end with the pump case and is connected with the base, install a plurality of impellers on the connecting axle, all be provided with the spiral case between the adjacent impeller, all be provided with first sealing washer between the adjacent spiral case outer lane and form sealing connection, a plurality of impellers and a plurality of spiral case form communicating water course, and a plurality of impellers rotate to the water that gets into through the check valve and pressurize step by step.

According to the utility model adopting the technical scheme, the pump shell and the base are hermetically connected to form a pump cavity, one end of the connecting shaft is connected with the pump shell, the other end of the connecting shaft is connected with the base, and the pump shell and the base form supporting force for the connecting shaft, so that the stability and the reliability of the connecting shaft during rotation are ensured; the connecting shaft is provided with the impellers and the volutes, so that when water in the pump cavity rotates through the impellers, the central parts of the impellers form vacuum, the water in the water suction pipeline flows into the central parts of the impellers under the action of atmospheric pressure to fill the vacuum area, the water flowing into the central parts of the impellers is pressurized under the action of centrifugal force, flows into the next-stage impeller after flowing through a water channel formed by the volutes and the impellers, and is pressurized step by step through the matching of the multistage impellers and the pump shell, so that the pump lift of the pump is increased, the pump lift required by irrigation in alpine regions is met, multi-pump combined transfer water pumping is replaced, the loss of water during transfer is avoided, the use quantity of the pumps is reduced, and the equipment cost and the labor cost are saved; the pump can also be used for fire fighting in high buildings.

Preferably, the impeller comprises a first impeller, a second impeller and a third impeller which are sequentially connected with the connecting shaft through keys, the volute comprises a first volute and a second volute, the first impeller is located in a cavity formed by connecting the volute cover and the first volute, a volute water inlet is formed in the position, close to the connecting shaft, of the volute cover, and a first water channel is formed between the first impeller and the first volute.

The first impeller is arranged in a cavity formed by matching the first volute and the volute cover, a volute water inlet is formed at the position, close to the connecting shaft, of the volute cover, and water entering through the volute water inlet is rotationally thrown out by the first impeller to lift water pressure for the first time and then enters a first water channel formed between the first impeller and the first volute.

Preferably, the second impeller is located in a cavity formed by the first volute and the second volute, a first inlet is formed between the root of the second impeller and the inner ring of the first volute, the first inlet is used for water flowing out of the first water channel to pass through, and a second water channel communicated with the first water channel is formed between the second impeller and the second volute.

The second impeller is arranged in a cavity formed by connecting the first volute and the second volute, and the cavity is communicated with the first water channel, so that water pressurized by the first impeller is rotated by the second impeller and thrown out to carry out second-time water pressure lifting and then enters the second water channel formed between the second impeller and the second volute.

Preferably, the third impeller is located in a cavity formed between the second volute and the base, a second inlet is formed between the root of the third impeller and the inner ring of the second volute, the second inlet is used for water flowing out of the second water channel to pass through, and a volute water outlet communicated with the second water channel is formed between the second volute and the base.

The third impeller is arranged in a cavity formed by connecting the second volute and the base, and the cavity is communicated with the second water channel, so that water pressurized by the second impeller is rotated and thrown out by the third impeller to lift water pressure for the third time, enters the water channel formed between the third impeller and the base, and enters the pump cavity from the volute water outlet.

Preferably, the first volute and the second volute are both in a circular structure, and are both provided with a water channel communicated with the impeller.

The water channel is arranged on the volute to guide the water thrown out of the impeller.

Preferably, one end of the connecting shaft is connected with the pump shell through a bearing, the other end of the connecting shaft is connected with the base through a mechanical sealing structure, the connecting shaft is provided with threads, and the axial position of the impeller is locked through the matching of the threads and the impeller locking nut.

The two ends of the bearing are supported by the bearing and the mechanical sealing structure, the sealing of the joint of the connecting shaft and the base can be still kept when the connecting shaft is convenient to rotate by the mechanical sealing structure, and the locking nut is arranged on the connecting shaft to position the impellers in the axial position of the connecting shaft, so that the position accuracy of the impellers is ensured.

Preferably, a pump water inlet is formed in the pump shell, the check valve is located at the pump water inlet, and a part of the pump cavity behind the check valve is in sealing connection with the volute cover, so that the secondary pump water inlet is only communicated with the volute water inlet.

The one-way valve is positioned at the water inlet of the pump, so that water in the pump cavity is prevented from flowing backwards, and part of the pump cavity behind the one-way valve is hermetically connected with the volute cover, so that water entering from the water inlet of the pump can directly enter the volute, and the water cup impeller can rotate to throw away the water pressure.

Preferably, a pump water outlet is formed in the top of the pump shell and communicated with a volute water outlet.

Through the delivery port intercommunication with the delivery port of pump and spiral case, the hydroenergy of being convenient for after the promotion pressure is transported to required farmland or high building through the water pipe of being connected with the delivery port of pump.

Preferably, the top of the pump shell is further provided with a water filling port, a top plug is mounted on the water filling port, and a second sealing ring is pressed at the matching position of the top plug and the water filling port.

Through setting up the mouth of watering, be convenient for to the pump cavity before the pump starts to water, the impeller of being convenient for produces centrifugal force through the water of being irritated to form the follow-up water of being taken out by the low water level of vacuum absorption at the impeller center, avoid the water in the pump cavity to spill from the mouth of watering through setting up the second sealing washer simultaneously.

Preferably, the top of pump case still is connected with the blanking cover, the blanking cover inboard is provided with the recess, the cross-section of recess is trapezoidal, the third packing ring has been placed in the recess, two the blanking cover passes through the screw thread and is connected with second delivery port and the third delivery port of setting on the pump case respectively to with two third packing rings crimping respectively the blanking cover with between second delivery port and the third delivery port.

Through set up pump second, third delivery port on the pump case, be convenient for select to use suitable delivery port according to the on-the-spot needs, through the blanking cover with pump second, third delivery port shutoff when using the pump delivery port to set up recess and third packing ring cooperation on the blanking cover, promote the shutoff effect between blanking cover and the second delivery port and the third delivery port of setting on the pump case, leak at this department when avoiding drawing water.

The utility model has the advantages that the pump casing and the base are hermetically connected to form a pump cavity, one end of the connecting shaft is connected with the pump casing, the other end of the connecting shaft is connected with the base, and the pump casing and the base form supporting force for the connecting shaft, so that the stability and the reliability of the connecting shaft during rotation are ensured; the connecting shaft is provided with a plurality of impellers and volutes, so that when water in the pump cavity rotates through the impellers, the central parts of the impellers form vacuum, the water in the water suction pipeline flows into the central parts of the impellers under the action of atmospheric pressure to fill the vacuum area, the water flowing into the central parts of the impellers flows into the next-stage impeller after flowing through a water channel formed by the volutes and the impellers after being subjected to the action of centrifugal force, the water is pressurized step by step through the matching of the multistage impellers and the pump shell, the pump lift of the pump is improved, the required lift for irrigation in mountain areas is met, the transfer water pumping of the pumps is replaced, the loss of the water during transfer is avoided, and the equipment cost and the labor cost are saved; the pump can also be used for fire fighting in high buildings. The impeller and the volute can be increased according to actual requirements so as to meet the use lift.

Drawings

FIG. 1 is a block diagram of the present invention.

Detailed Description

The present invention is further described with reference to the accompanying drawings, but the utility model is not limited thereby within the scope of the described embodiments.

The utility model description reference numerals include: the pump casing 1, the pump water inlet 11, the pump water outlet 12, the base 2, the first sealing ring 20, the mechanical sealing structure 21, the bearing 3, the impeller lock nut 31, the volute cover 4, the first volute 41, the first impeller 411, the volute water inlet 42, the volute water outlet 43, the second volute 51, the second impeller 511, the third impeller 611, the connecting shaft 27, the check valve 5, the top plug 61 and the second sealing ring 6.

Referring to fig. 1, the multistage high pressure pump comprises a pump shell 1 and a base 2, wherein the pump shell 1 and the base 2 are connected in a sealing mode to form a pump cavity, a connecting shaft 27 is arranged in the pump cavity, one end of the connecting shaft 27 is connected with the pump shell 1, the other end of the connecting shaft is connected with the base 2, a plurality of impellers are mounted on the connecting shaft 27, volutes are arranged between adjacent impellers, first sealing rings 20 are arranged between outer rings of the adjacent volutes to form sealing connection, the impellers and the volutes form communicated water channels, and the impellers rotate to pressurize water entering through a one-way valve 5 step by step.

The impeller comprises a first impeller 411, a second impeller 511 and a third impeller 611 which are sequentially connected with the connecting shaft 27 through keys, the volute comprises a first volute 41 and a second volute 51, the first impeller 411 is located in a cavity formed after the volute cover 4 is connected with the first volute 41, a volute water inlet 42 is formed in the position, close to the connecting shaft 27, of the volute cover 4, and a first water channel is formed between the first impeller 411 and the first volute 41.

Referring to fig. 1, the second impeller 511 is located in a cavity formed by the first volute 41 and the second volute 51, a first inlet is formed between a root of the second impeller 511 and an inner ring of the first volute 41, the first inlet is used for water flowing out of the first water channel to pass through, and a second water channel communicated with the first water channel is formed between the second impeller 511 and the second volute 51.

Referring to fig. 1, the third impeller 611 is located in a cavity formed between the second volute 51 and the base 2, a second inlet is formed between a root of the third impeller 611 and an inner ring of the second volute 51, the second inlet is used for water flowing out of the second water channel to pass through, and a volute outlet 43 communicated with the second water channel is formed between the second volute 51 and the base 2.

The first and

second volutes

41 and 51 are circular in configuration and each form a water channel communicating with the impeller. Referring to fig. 1, one end of the connecting shaft 27 is connected with the pump casing 1 through the bearing 3, the other end is connected with the base 2 through the mechanical sealing structure 21, and the connecting shaft 27 is provided with a thread which is matched with the impeller locking nut 31 to lock the axial position of the impeller.

The pump casing 1 is provided with a pump water inlet 11, the one-way valve 5 is positioned at the pump water inlet 11, and part of a pump cavity behind the one-way valve 5 is hermetically connected with the volute cover 4, so that the secondary pump water inlet 11 is only communicated with the volute water inlet 42. The top of the pump shell 1 is provided with a pump water outlet 12, and the pump water outlet 12 is communicated with a volute water outlet 43.

The top of the pump shell 1 is also provided with a water filling opening, a top plug 61 is installed on the water filling opening, and a second sealing ring 6 is pressed at the matching position of the top plug 61 and the water filling opening.

Referring to fig. 1, the top of the pump case 1 is further connected with a blocking cover, a groove is formed in the inner side of the blocking cover, the cross section of the groove is trapezoidal, a third gasket is placed in the groove, the two blocking covers are respectively connected with a second water outlet and a third water outlet which are formed in the pump case through threads, and the two third gaskets are respectively connected between the blocking cover and the second water outlet and the third water outlet in a pressing mode.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The multistage high-pressure pump is characterized by comprising a pump shell (1) and a base (2), wherein the pump shell (1) and the base (2) are connected in a sealing mode to form a pump cavity, a connecting shaft (27) is arranged in the pump cavity, one end of the connecting shaft (27) is connected with the pump shell (1), the other end of the connecting shaft is connected with the base (2), a plurality of impellers are installed on the connecting shaft (27), volutes are arranged between adjacent impellers, first sealing rings (20) are arranged between outer rings of adjacent volutes to form sealing connection, the impellers and the volutes form communicated water channels, and the impellers rotate to pressurize water entering through a one-way valve (5) stage by stage.

2. The multistage high-pressure pump according to claim 1, wherein the impeller comprises a first impeller (411), a second impeller (511) and a third impeller (611) which are sequentially connected with the connecting shaft (27) through keys, the volute comprises a first volute (41) and a second volute (51), the first impeller (411) is located in a cavity formed after the volute cover (4) is connected with the first volute (41), a volute water inlet (42) is formed in the position, close to the connecting shaft (27), of the volute cover (4), and a first water channel is formed between the first impeller (411) and the first volute (41).

3. The multistage high pressure pump according to claim 2, wherein the second impeller (511) is located in a cavity formed by the first volute (41) and the second volute (51), a first inlet is formed between a root of the second impeller (511) and an inner ring of the first volute (41), the first inlet is used for water flowing out of the first water channel to pass through, and a second water channel communicated with the first water channel is formed between the second impeller (511) and the second volute (51).

4. The multistage high pressure pump according to claim 3, characterized in that the third impeller (611) is located in a cavity formed between the second volute (51) and the base (2), a second inlet is formed between the root of the third impeller (611) and the inner ring of the second volute (51), the second inlet is used for water flowing out of the second water channel to pass through, and a volute outlet (43) communicated with the second water channel is formed between the second volute (51) and the base (2).

5. The multistage high pressure pump according to claim 2, wherein the first volute (41) and the second volute (51) are each of circular configuration and each form a water channel communicating with the impeller.

6. The multistage high pressure pump according to claim 1, wherein one end of the connecting shaft (27) is connected with the pump casing (1) through a bearing (3), the other end is connected with the base (2) through a mechanical sealing structure (21), the connecting shaft (27) is provided with a thread, and the axial position of the impeller is locked through the matching of the thread and an impeller locking nut (31).

7. The multistage high-pressure pump according to claim 1, characterized in that a pump inlet (11) is arranged on the pump housing (1), the check valve (5) is arranged at the pump inlet (11), and a part of the pump cavity behind the check valve (5) is hermetically connected with the volute cover (4) so that the pump inlet (11) is only communicated with the volute inlet (42).

8. Multistage high-pressure pump according to claim 1, characterized in that the top of the pump housing (1) is provided with a pump outlet (12), the pump outlet (12) communicating with a volute outlet (43).

9. The multistage high-pressure pump according to claim 1, wherein a water filling port is further arranged at the top of the pump shell (1), a top plug (61) is mounted on the water filling port, and a second sealing ring (6) is pressed at the matching position of the top plug (61) and the water filling port.

10. The multistage high-pressure pump according to claim 6, characterized in that a plug is further connected to the top of the pump casing (1), a groove is formed in the inner side of the plug, the cross section of the groove is trapezoidal, a third gasket is placed in the groove, the two plugs are respectively connected with a second water outlet and a third water outlet which are formed in the pump casing through threads, and the two third gaskets are respectively crimped between the plugs and the second water outlet and the third water outlet.