CN217300930U - Vertical single-stage barrel bag condensate pump - Google Patents

Abstract

The utility model provides a vertical single-stage barrel-bag condensate pump, belonging to the technical field of water pumps; vertical single-stage cylinder bag condensate pump includes the motor, and vertical single-stage cylinder bag condensate pump includes: the device comprises a pump cylinder, a discharge cylinder, a mounting plate, a discharge pipe, a suction inlet, a discharge pipe, a discharge connecting pipe, a middle section, a suction flared pipe, a suction hole, a main shaft, an inducer and a main impeller; adopt above-mentioned structure, through setting up the main impeller in the top of inducer, will inhale and set up the suction hole on the horn pipe, in order to realize that liquid flows in through the suction hole and inhales in the horn pipe, and make inducer and main impeller flow through in proper order, thereby realize that the inducer reduces the speed to liquid, in order to promote the anti cavitation performance of main impeller, and then promote the anti cavitation performance of product, in order to avoid the product to take place because of the condition that receives cavitation and damage, in order to promote the use of product and experience.

Description

Vertical single-stage barrel bag condensate pump

Technical Field

The utility model belongs to the technical field of the water pump, concretely relates to vertical single-stage barrel bag condensate pump.

Background

At present, in the related art, a condensate pump is generally used for conveying condensate water in a coal-fired thermal power plant, and can also be used for conveying liquid with similar physical and chemical properties to the condensate water. The condensate pump has strong water absorption performance and small cavitation allowance, and is suitable for an adaptation field with harsh cavitation allowance. Although the condensate pump has good cavitation performance, the possibility of cavitation is still existed, once the condensate pump is cavitated, the condensate pump can cause damage to the pump body, the impeller, the shaft sleeve, the sealing ring and other accessories, so that the surface of the condensate pump becomes rough, the flow and the pressure of the condensate pump are influenced, the use efficiency is reduced, the field operation working condition cannot be met, accidents or shutdown and the like are caused, the field operation and the economic benefit are seriously influenced, and the use experience of products is further reduced, therefore, the design of the condensate pump capable of improving the cavitation resistance performance is very necessary.

SUMMERY OF THE UTILITY MODEL

In order to solve the product that exists among the above-mentioned prior art and influence the flow of condensate pump because of receiving the cavitation, pressure, the availability factor reduces, can't satisfy the on-the-spot operation operating mode, cause the accident or shut down etc, seriously influence operation and economic benefits on-the-spot, and then reduced the use of product and experienced scheduling problem (or defect), the utility model provides a formula single-stage barrel bag condensate pump, the adoption sets up the main impeller in the top of inducer, will inhale and set up the suction hole on the horn pipe, in order to realize that liquid flows into through the suction hole and inhales the horn pipe, and make inducer and main impeller of flowing through in proper order, thereby realize that the inducer slows down to liquid, in order to promote the anti-cavitation performance of main impeller, and then promote the anti-cavitation performance of product, in order to avoid the product to take place because of the condition that receives the cavitation and damage, in order to promote the effect that the product was used and is experienced. The specific technical scheme is as follows:

the utility model provides a vertical single-stage cartridge bag condensate pump, vertical single-stage cartridge bag condensate pump includes the motor, and vertical single-stage cartridge bag condensate pump includes: the device comprises a pump cylinder, a discharge cylinder, a mounting plate, a discharge pipe, a suction inlet, a discharge pipe, a discharge connecting pipe, a middle section, a suction flared pipe, a suction hole, a main shaft, an inducer and a main impeller; the pump cylinder is a hollow cavity with an opening at one end; the discharge cylinder is connected with one end of the pump cylinder; the mounting plate is embedded in the spitting cylinder; the discharge pipe is embedded into the discharge cylinder body, is connected with the mounting plate and is communicated with the bottom of the discharge cylinder body; the suction inlet is communicated with the discharge cylinder; the discharge port penetrates through the discharge cylinder body and is communicated with the discharge pipe; the discharge connecting pipe is embedded into the pump cylinder body and is communicated with the discharge pipe; one end of the middle section is connected with the spitting-out connecting pipe; the suction flared tube is connected with the other end of the middle section; at least two suction holes are arranged on the suction flared tube; the main shaft sequentially penetrates through the top of the discharge cylinder, the discharge pipe, the discharge connecting pipe, the middle section and the suction flared pipe, one end of the main shaft is rotatably connected with the suction flared pipe, and the other end of the main shaft is connected with the motor; the inducer is sleeved on the outer side of the main shaft and is embedded into the suction flared tube; the main impeller suit is in the outside of main shaft, and the main impeller is embedded in the middle section, and the main impeller is located the top of inducer.

In addition, the vertical single-stage barrel bag condensate pump in the technical scheme can also have the following additional technical characteristics:

in the above technical scheme, the vertical single-stage cartridge bag condensate pump further comprises: the supporting plate, the water permeable hole, the supporting seat and the water lubricating bearing are arranged on the bearing seat; the support plate is connected with the discharge connecting pipe and is fixed at the bottom of the discharge cylinder; at least two water permeable holes are arranged on the supporting plate, and the at least two water permeable holes are simultaneously communicated with the discharge pipe and the discharge connecting pipe; the supporting seat is connected with the supporting plate and wound on the outer side of the main shaft; the water lubricated bearing is embedded into the supporting seat and sleeved outside the main shaft.

In the above technical scheme, the vertical single-stage cartridge bag condensate pump further comprises: a first connection key and a second connection key; the first connecting key is embedded into the inducer and the main shaft at the same time; the second connecting key is embedded into the main impeller and the main shaft simultaneously.

In above-mentioned technical scheme, vertical single-stage cylinder bag condensate pump still includes: guide vanes and anti-rotation pins; the guide vane is embedded into the middle section, is wound on the outer side of the main shaft and is positioned above the main impeller; the anti-rotation pin is embedded into the guide vane and the middle section simultaneously.

In the above technical scheme, the vertical single-stage cartridge bag condensate pump further comprises: the shaft sleeve and the fixing nut; the shaft sleeve is wound on the outer side of the main shaft and is attached to the inducer; the fixing nut is sleeved on the outer side of the main shaft and is attached to the shaft sleeve.

In the above technical solution, the vertical single-stage cartridge bag condensate pump further includes: a bearing fixing seat and a thrust bearing; the bearing fixing seat is fixed at the top of the discharge cylinder body and is wound on the outer side of the main shaft; the thrust bearing is embedded into the bearing fixing seat, and the thrust bearing is sleeved on the outer side of the main shaft.

In the above technical scheme, the vertical single-stage cartridge bag condensate pump further comprises: a balance drum and a balance sleeve; the balance drum is a hollow cavity with openings at two ends, and is sleeved on the outer side of the main shaft; the balance sleeve is wound on the outer side of the balance drum and is fixed on the mounting plate; wherein, a gap is arranged between the balance drum and the balance sleeve.

In the technical scheme, the gap between the balance drum and the balance sleeve is 0.2 mm.

In the above technical scheme, the vertical single-stage cartridge bag condensate pump further comprises: a seal ring; the sealing ring is an elastic body and is embedded between the pump cylinder and the discharge cylinder.

The utility model discloses a vertical single-stage barrel bag condensate pump compares with prior art, and beneficial effect is:

1. one end of the pump cylinder body is communicated with the discharge cylinder body, so that the pump cylinder body is communicated with the interior of the discharge cylinder body; the mounting plate is embedded into the spitting cylinder body by the cylinder, the spitting pipe is connected with the mounting plate, and the spitting pipe is communicated with the bottom of the spitting cylinder body so as to realize that the mounting plate supports the spitting pipe; the suction inlet is communicated with the discharge cylinder body, so that liquid enters the discharge cylinder body and the pump cylinder body through the suction inlet; the liquid in the discharge pipe flows out through the discharge port by penetrating the discharge port through the discharge cylinder and communicating the discharge port with the discharge pipe; the discharge connecting pipe is communicated with the discharge pipe, one end of the middle section is connected with the discharge connecting pipe, the suction flared pipe is connected with the other end of the middle section, so that the discharge connecting pipe, the middle section and the discharge connecting pipe are communicated, and meanwhile, at least two suction holes are formed in the suction flared pipe, so that liquid in the pump cylinder flows into the suction flared pipe through the suction holes; one end of the main shaft is rotatably connected with the suction flared pipe, and the other end of the main shaft is connected with the motor, so that the motor drives the main shaft to rotate; the inducer is sleeved on the outer side of the main shaft, the main impeller is sleeved on the outer side of the main shaft, and the main impeller is located above the inducer, so that the main shaft drives the inducer and the main impeller to rotate. When the product is used, the suction inlet is communicated with a water source so as to realize that liquid enters through the suction inlet and flows into the pump cylinder; the suction flared tube is provided with a suction hole, so that the liquid flows into the suction flared tube through the suction hole, sequentially flows through the middle section, the discharge connecting tube and the discharge tube, and finally flows out of the discharge port; the motor drives the main shaft to rotate, and the inducer and the main impeller are sleeved on the outer side of the main shaft, so that the main shaft drives the inducer and the main impeller to rotate; because the main impeller is located above the inducer, when liquid enters the suction flared tube from the suction hole, the liquid is firstly contacted with the inducer and then contacted with the main impeller, so that the speed is reduced through the inducer to improve the cavitation resistance of the main impeller and further improve the cavitation resistance of a product. Adopt above-mentioned structure, through setting up the main impeller in the top of inducer, will inhale and set up the suction hole on the horn pipe, in order to realize that liquid flows in through the suction hole and inhales in the horn pipe, and make inducer and main impeller flow through in proper order, thereby realize that the inducer reduces the speed to liquid, in order to promote the anti cavitation performance of main impeller, and then promote the anti cavitation performance of product, in order to avoid the product to take place because of the condition that receives cavitation and damage, in order to promote the use of product and experience.

2. The support plate is connected with the discharge connecting pipe in a welding mode, and the support plate is fixed at the bottom of the discharge cylinder in a bolt connection mode, so that the discharge connecting pipe is connected with the discharge cylinder through the support plate; at least two water-permeable holes are arranged on the support, and the discharge pipe and the discharge connecting pipe are communicated simultaneously through at least two air holes, so that the liquid in the discharge connecting pipe flows into the discharge pipe through the water-permeable holes; through being connected supporting seat and backup pad, establish in the outside of main shaft through the supporting seat cover, with the lubricated bearing embedding of water in the supporting seat to with the lubricated bearing suit in the outside of main shaft, support the main shaft through the lubricated bearing of water with the realization supporting seat, thereby promote main shaft pivoted flexibility.

3. The first connecting key is embedded into the inducer and the main shaft at the same time, so that the main shaft and the inducer do not rotate relatively, and the main shaft drives the inducer to rotate; the second connecting key is embedded into the main impeller and the main shaft at the same time, so that the main shaft and the main impeller do not rotate relatively, and the main shaft drives the inducer to rotate.

4. Through in embedding the stator middle section, with the stator around establishing in the outside of main shaft to several stator are located the top of main impeller, collect in order to realize that main stator throws away the liquid that the impeller came out, make the velocity of flow of liquid reduce, behind partial speed energy head change pressure energy head, introduce next grade or through the diffuser pipe discharge uniformly again. The rotation preventing pins are embedded into the guide vanes and the middle section simultaneously, so that the guide vanes are prevented from rotating.

5. The shaft sleeve is wound on the outer side of the main shaft, the shaft sleeve is attached to the induction wheel box, the fixing nut is sleeved on the outer side of the main shaft and attached to the shaft sleeve, so that the induction wheel is positioned through the shaft sleeve, and the induction wheel is prevented from being separated from the fixing nut.

6. Through fixing the bearing fixing base at the top of spitting the barrel, with the bearing fixing base around establishing in the outside of main shaft, with thrust bearing embedding in the bearing fixing base to with the thrust bearing suit in the outside of main shaft, support the main shaft through thrust bearing with the realization bearing fixed axle, thereby promote main shaft pivoted stability.

7. The balance drum is sleeved on the outer side of the main shaft, so that the balance drum rotates along with the main shaft; the balance sleeve is wound on the outer side of the balance drum and fixed on the mounting plate, meanwhile, a gap is formed between the balance drum and the balance sleeve, the balance sleeve is supported by the mounting plate, the balance drum rotates in the balance sleeve, liquid flows in the gap between the balance drum and the balance sleeve, balance force opposite to axial force of a main shaft is generated by pressure difference at two ends of the gap, the axial force of the main shaft is balanced, and residual axial thrust is borne by a pair of angular contact thrust ball bearings which are mounted back to back.

8. Through setting up the sealing washer into the elastomer, imbed the sealing washer simultaneously between the pump barrel and the spitting barrel to realize sealing between the pump barrel and the spitting barrel, thereby guarantee that no gas gets into in the product, improve the vacuum in the product.

Drawings

Fig. 1 is a cross-sectional view of a vertical single-stage cartridge-bag condensate pump according to embodiments 1 and 2 of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is an enlarged view of a portion of FIG. 1 at C;

wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

11 pump cylinder, 12 discharge cylinder, 13 mounting plate, 14 discharge pipe, 15 suction inlet, 16 discharge outlet, 17 discharge connection pipe, 18 middle section, 19 suction bell pipe, 20 suction hole, 21 main shaft, 22 inducer, 23 main impeller, 24 support plate, 25 water permeable hole, 26 support seat, 27 water lubricating bearing, 28 first connecting key, 29 second connecting key, 30 guide vane, 31 anti-rotation pin, 32 shaft sleeve, 33 fixing nut, 34 bearing fixing seat, 35 thrust bearing, 36 balance drum and 37 balance sleeve.

Detailed Description

The present invention will be further described with reference to the following embodiments and the accompanying fig. 1-4, but the present invention is not limited to these embodiments.

Example 1:

a vertical single stage cartridge bag condensate pump, as shown in fig. 1 to 4, the vertical single stage cartridge bag condensate pump including a motor, the vertical single stage cartridge bag condensate pump comprising: a pump cylinder 11, a discharge cylinder 12, a mounting plate 13, a discharge pipe 14, a suction port 15, a discharge pipe 14, a discharge connection pipe 17, a middle section 18, a suction bell pipe 19, a suction hole 20, a main shaft 21, an inducer 22, and a main impeller 23; the pump cylinder 11 is a hollow cavity with an opening at one end; the discharge cylinder 12 is connected to one end of the pump cylinder 11; the mounting plate 13 is embedded in the discharge cylinder 12; a discharge pipe 14 is embedded in the discharge cylinder 12, the discharge pipe 14 is connected to the mounting plate 13, and the discharge pipe 14 communicates with the bottom of the discharge cylinder 12; the suction port 15 communicates with the discharge cylinder 12; the discharge port 16 penetrates the discharge cylinder 12, and the discharge port 16 is communicated with the discharge pipe 14; the discharge connection pipe 17 is embedded in the pump cylinder 11, and the discharge connection pipe 17 is communicated with the discharge pipe 14; one end of the middle section 18 is connected with the spitting-out connecting pipe 17; the suction flared tube 19 is connected with the other end of the middle section 18; at least two suction holes 20 are provided on the suction bell 19; a main shaft 21 sequentially penetrates through the top of the discharge cylinder 12, the discharge pipe 14, the discharge connecting pipe 17, the middle section 18 and the suction flared pipe 19, one end of the main shaft 21 is rotatably connected with the suction flared pipe 19, and the other end of the main shaft 21 is connected with a motor; the inducer 22 is sleeved outside the main shaft 21, and the inducer 22 is embedded in the suction flared tube 19; the main impeller 23 is sleeved outside the main shaft 21, the main impeller 23 is embedded in the middle section 18, and the main impeller 23 is located above the inducer 22.

The communication between the pump cylinder 11 and the inside of the discharge cylinder 12 is realized by communicating one end of the pump cylinder 11 with the discharge cylinder 12; the mounting plate 13 is embedded into the spitting cylinder body 12, the spitting pipe 14 is connected with the mounting plate 13, and the spitting pipe 14 is communicated with the bottom of the spitting cylinder body 12, so that the mounting plate 13 supports the spitting pipe 14; the liquid enters the discharge cylinder 12 and the pump cylinder 11 through the suction port 15 by communicating the suction port 15 with the discharge cylinder 12; the liquid in the discharge pipe 14 flows out through the discharge port 16 by passing the discharge port 16 through the discharge cylinder 12 and communicating the discharge port 16 with the discharge pipe 14; the discharge connecting pipe 17 is communicated with the discharge pipe 14, one end of the middle section 18 is connected with the discharge connecting pipe 17, the suction flared pipe 19 is connected with the other end of the middle section 18, so that the discharge connecting pipe 17, the middle section 18 and the discharge connecting pipe 17 are communicated, and meanwhile, at least two suction holes 20 are formed in the suction flared pipe 19, so that liquid in the pump cylinder body 11 flows into the suction flared pipe 19 through the suction holes 20; one end of the main shaft 21 is rotatably connected with the suction flared tube 19 and the other end of the main shaft 21 is connected with a motor by sequentially penetrating the main shaft 21 through the top of the discharge cylinder 12, the discharge tube 14, the discharge connection tube 17, the middle section 18 and the suction flared tube 19, so that the motor drives the main shaft 21 to rotate; the inducer 22 and the main impeller 23 are driven by the main shaft 21 to rotate by sleeving the inducer 22 on the outer side of the main shaft 21, sleeving the main impeller 23 on the outer side of the main shaft 21 and positioning the main impeller 23 above the inducer 22. When the product is used, the suction inlet 15 is communicated with a water source to realize that liquid enters through the suction inlet 15 and flows into the pump cylinder 11; since the suction bell pipe 19 is provided with the suction hole 20, the liquid flows into the suction bell pipe 19 through the suction hole 20, flows through the middle section 18, the discharge connection pipe 17 and the discharge pipe 14 in this order, and finally flows out through the discharge port 16; the main shaft 21 drives the main shaft 21 to rotate, and the inducer 22 and the main impeller 23 are sleeved outside the main shaft 21, so that the main shaft 21 drives the inducer 22 and the main impeller 23 to rotate; since the main impeller 23 is located above the inducer 22, when the liquid enters the induction bell-shaped tube 19 from the suction hole 20, the liquid contacts the inducer 22 first and then contacts the main impeller 23, so that the speed of the liquid is reduced by the inducer 22 to improve the cavitation resistance of the main impeller 23, and further improve the cavitation resistance of the product. By adopting the structure, the main impeller 23 is arranged above the inducer 22, the suction holes 20 are formed in the suction flared tube 19, so that liquid flows into the suction flared tube 19 through the suction holes 20, and the liquid sequentially flows through the inducer 22 and the main impeller 23, so that the inducer 22 decelerates the liquid, the cavitation resistance of the main impeller 23 is improved, the cavitation resistance of a product is improved, the phenomenon that the product is damaged due to cavitation is avoided, and the use experience of the product is improved.

In an embodiment of the present invention, as shown in fig. 1 to 4, the vertical single-stage cartridge-bag condensate pump further includes: a support plate 24, a water permeable hole 25, a support seat 26 and a water lubricated bearing 27; the support plate 24 is connected with the discharge connecting pipe 17, and the support plate 24 is fixed at the bottom of the discharge cylinder 12; at least two water permeable holes 25 are arranged on the supporting plate 24, and the at least two water permeable holes 25 are simultaneously communicated with the discharge pipe 14 and the discharge connecting pipe 17; the supporting seat 26 is connected with the supporting plate 24, and the supporting seat 26 is wound on the outer side of the main shaft 21; the water lubricated bearing 27 is embedded in the support base 26, and the water lubricated bearing 27 is sleeved on the outer side of the main shaft 21.

The support plate 24 is connected with the discharge connecting pipe 17 in a welding mode, and the support plate 24 is fixed at the bottom of the discharge cylinder 12 in a bolt connection mode, so that the discharge connecting pipe 17 is connected with the discharge cylinder 12 through the support plate 24; by arranging at least two water-permeable holes 25 on the support and enabling the at least two air-permeable holes to simultaneously communicate the discharge pipe 14 with the discharge connecting pipe 17, the liquid in the discharge connecting pipe 17 flows into the discharge pipe 14 through the water-permeable holes 25; through being connected supporting seat 26 with backup pad 24, establish the outside at main shaft 21 through supporting seat 26 cover, with water lubricated bearing 27 embedding supporting seat 26 in to water lubricated bearing 27 cover is in the outside of main shaft 21, supports main shaft 21 through water lubricated bearing 27 with realizing supporting seat 26, thereby promotes main shaft 21 pivoted flexibility.

In an embodiment of the present invention, as shown in fig. 1 to 4, the vertical single-stage cartridge-bag condensate pump further includes: a first connection key 28 and a second connection key 29; the first connecting key 28 is embedded in both the inducer 22 and the main shaft 21; the second connecting key 29 is embedded in both the main impeller 23 and the main shaft 21.

The first connecting key 28 is embedded into the inducer 22 and the main shaft 21 at the same time, so that the main shaft 21 and the inducer 22 do not rotate relatively, and the main shaft 21 drives the inducer 22 to rotate; the main shaft 21 drives the inducer 22 to rotate by embedding the second connecting key 29 into the main impeller 23 and the main shaft 21 at the same time so as to realize no relative rotation between the main shaft 21 and the main impeller 23.

In an embodiment of the present invention, as shown in fig. 1 to 4, the vertical single-stage cartridge-bag condensate pump further includes: guide vanes 30 and anti-rotation pins 31; the guide vane 30 is embedded in the middle section 18, the guide vane 30 is wound on the outer side of the main shaft 21, and the guide vane 30 is positioned above the main impeller 23; the anti-rotation pins 31 are simultaneously embedded in the guide vanes 30 and the middle section 18.

The guide vanes 30 are embedded into the middle section 18, the guide vanes 30 are wound on the outer side of the main shaft 21, and a plurality of guide vanes 30 are positioned above the main impeller 23, so that liquid thrown out by the main guide vanes 30 is collected, the flow rate of the liquid is reduced, partial speed energy head is converted into pressure energy head, and then the pressure energy head is uniformly introduced into the next stage or is discharged through a diffusion pipe. The guide vane 30 is prevented from rotating by embedding the rotation preventing pin 31 in both the guide vane 30 and the middle section 18.

In an embodiment of the present invention, as shown in fig. 1 to 4, the vertical single-stage cartridge-bag condensate pump further includes: a boss 32 and a fixing nut 33; the shaft sleeve 32 is wound on the outer side of the main shaft 21, and the shaft sleeve 32 is attached to the inducer 22; the fixing nut 33 is fitted around the outer side of the main shaft 21, and the fixing nut 33 is fitted to the boss 32.

The sleeve 32 is wound around the outer side of the main shaft 21, the sleeve 32 is attached to the inducer 22, the fixing nut 33 is fitted around the outer side of the main shaft 21, and the fixing nut 33 is attached to the sleeve 32, so that the inducer 22 is positioned by the sleeve 32, and the inducer 22 is prevented from being detached from the fixing nut 33.

Example 2:

a vertical single-stage cartridge bag condensate pump, as shown in fig. 1 to 4, the vertical single-stage cartridge bag condensate pump including a motor, the vertical single-stage cartridge bag condensate pump comprising: a pump cylinder 11, a discharge cylinder 12, a mounting plate 13, a discharge pipe 14, a suction port 15, a discharge pipe 14, a discharge connection pipe 17, a middle section 18, a suction bell pipe 19, a suction hole 20, a main shaft 21, an inducer 22, and a main impeller 23; the pump cylinder 11 is a hollow cavity with an opening at one end; the discharge cylinder 12 is connected to one end of the pump cylinder 11; the mounting plate 13 is embedded in the discharge cylinder 12; a discharge pipe 14 is embedded in the discharge cylinder 12, the discharge pipe 14 is connected to the mounting plate 13, and the discharge pipe 14 communicates with the bottom of the discharge cylinder 12; the suction port 15 communicates with the discharge cylinder 12; the discharge port 16 penetrates the discharge cylinder 12, and the discharge port 16 is communicated with the discharge pipe 14; the discharge connecting pipe 17 is embedded in the pump cylinder 11, and the discharge connecting pipe 17 is communicated with the discharge pipe 14; one end of the middle section 18 is connected with the spitting-out connecting pipe 17; the suction flared tube 19 is connected with the other end of the middle section 18; at least two suction holes 20 are provided on the suction bell tube 19; a main shaft 21 sequentially penetrates through the top of the discharge cylinder 12, the discharge pipe 14, the discharge connecting pipe 17, the middle section 18 and the suction flared pipe 19, one end of the main shaft 21 is rotatably connected with the suction flared pipe 19, and the other end of the main shaft 21 is connected with a motor; the inducer 22 is sleeved outside the main shaft 21, and the inducer 22 is embedded in the suction flared tube 19; the main impeller 23 is sleeved outside the main shaft 21, the main impeller 23 is embedded in the middle section 18, and the main impeller 23 is located above the inducer 22.

The communication between the pump cylinder 11 and the inside of the discharge cylinder 12 is realized by communicating one end of the pump cylinder 11 with the discharge cylinder 12; the mounting plate 13 is embedded into the spitting cylinder body 12, the spitting pipe 14 is connected with the mounting plate 13, and the spitting pipe 14 is communicated with the bottom of the spitting cylinder body 12, so that the mounting plate 13 supports the spitting pipe 14; the liquid enters the discharge cylinder 12 and the pump cylinder 11 through the suction port 15 by communicating the suction port 15 with the discharge cylinder 12; the liquid in the discharge pipe 14 flows out through the discharge port 16 by passing the discharge port 16 through the discharge cylinder 12 and communicating the discharge port 16 with the discharge pipe 14; the discharge connecting pipe 17 is communicated with the discharge pipe 14, one end of the middle section 18 is connected with the discharge connecting pipe 17, the suction flared pipe 19 is connected with the other end of the middle section 18, so that the discharge connecting pipe 17, the middle section 18 and the discharge connecting pipe 17 are communicated, and meanwhile, at least two suction holes 20 are formed in the suction flared pipe 19, so that liquid in the pump cylinder body 11 flows into the suction flared pipe 19 through the suction holes 20; one end of the main shaft 21 is rotatably connected with the suction flared tube 19 by sequentially penetrating the main shaft 21 through the top of the discharge cylinder 12, the discharge tube 14, the discharge connection tube 17, the middle section 18 and the suction flared tube 19, and the other end of the main shaft 21 is connected with the motor, so that the motor drives the main shaft 21 to rotate; the inducer 22 and the main impeller 23 are driven by the main shaft 21 to rotate by sleeving the inducer 22 on the outer side of the main shaft 21, sleeving the main impeller 23 on the outer side of the main shaft 21 and positioning the main impeller 23 above the inducer 22. When the product is used, the suction inlet 15 is communicated with a water source to realize that liquid enters through the suction inlet 15 and flows into the pump cylinder 11; since the suction bell 19 is provided with the suction hole 20, the liquid flows into the suction bell 19 through the suction hole 20, passes through the middle section 18, the discharge connection pipe 17, and the discharge pipe 14 in this order, and finally flows out through the discharge port 16; the main shaft 21 drives the main shaft 21 to rotate, and the inducer 22 and the main impeller 23 are sleeved outside the main shaft 21, so that the main shaft 21 drives the inducer 22 and the main impeller 23 to rotate; since the main impeller 23 is located above the inducer 22, when liquid enters the induction bell-mouthed tube 19 from the suction hole 20, the liquid contacts the inducer 22 first and then contacts the main impeller 23, so that the speed of the inducer 22 is reduced to improve the cavitation resistance of the main impeller 23, and thus the cavitation resistance of the product. By adopting the structure, the main impeller 23 is arranged above the inducer 22, the suction holes 20 are formed in the suction flared tube 19, so that liquid flows into the suction flared tube 19 through the suction holes 20, and the liquid sequentially flows through the inducer 22 and the main impeller 23, so that the inducer 22 decelerates the liquid, the cavitation resistance of the main impeller 23 is improved, the cavitation resistance of a product is improved, the phenomenon that the product is damaged due to cavitation is avoided, and the use experience of the product is improved.

In an embodiment of the present invention, as shown in fig. 1 to 4, the vertical single-stage cartridge bag condensate pump further includes: a bearing holder 34 and a thrust bearing 35; the bearing fixing seat 34 is fixed at the top of the spitting cylinder 12, and the bearing fixing seat 34 is wound on the outer side of the main shaft 21; the thrust bearing 35 is embedded in the bearing fixing seat 34, and the thrust bearing 35 is sleeved on the outer side of the main shaft 21.

Through fixing bearing fixing base 34 at the top of spitting barrel 12, wind bearing fixing base 34 and establish in the outside of main shaft 21, imbed thrust bearing 35 in the bearing fixing base 34 to with the outside of thrust bearing 35 suit at main shaft 21, in order to realize that the bearing fixed axle supports main shaft 21 through thrust bearing 35, thereby promote main shaft 21 pivoted stability.

In an embodiment of the present invention, as shown in fig. 1 to 4, the vertical single-stage cartridge-bag condensate pump further includes: a balance drum 36 and a balance sleeve 37; the balance drum 36 is a hollow cavity with openings at two ends, and the balance drum 36 is sleeved outside the main shaft 21; the balance sleeve 37 is wound on the outer side of the balance drum 36, and the balance sleeve 37 is fixed on the mounting plate 13; wherein a gap is arranged between the balancing drum 36 and the balancing sleeve 37.

The balance drum 36 is sleeved on the outer side of the main shaft 21, so that the balance drum 36 rotates along with the main shaft 21; the balance sleeve 37 is wound on the outer side of the balance drum 36, the balance sleeve 37 is fixed on the mounting plate 13, meanwhile, a gap is formed between the balance drum 36 and the balance sleeve 37, the mounting plate 13 supports the balance sleeve 37, the balance drum 36 rotates in the balance sleeve 37, liquid flows in the gap between the balance drum 36 and the balance sleeve 37, and therefore the balance force opposite to the axial force of the spindle 21 is generated by pressure difference between two ends of the gap to balance the axial force of the spindle 21, and residual axial thrust is borne by a pair of angular contact thrust ball bearings which are mounted back to back.

In the embodiment of the present invention, the gap between the balance drum 36 and the balance sleeve 37 is 0.2 mm.

In an embodiment of the present invention, as shown in fig. 1 to 4, the vertical single-stage cartridge-bag condensate pump further includes: a seal ring; the seal ring is an elastic body and is simultaneously fitted between the pump cylinder 11 and the discharge cylinder 12.

Through setting up the sealing washer into the elastomer, imbed the sealing washer simultaneously between pump barrel 11 and the cylinder 12 of spitting to the realization is sealed between pump barrel 11 and the cylinder 12 of spitting, thereby guarantees that no gas gets into in the product, improves the vacuum in the product.

Claims (9)

1. The utility model provides a vertical single-stage cartridge bag condensate pump, vertical single-stage cartridge bag condensate pump includes the motor, its characterized in that, vertical single-stage cartridge bag condensate pump includes:

the pump cylinder body is a hollow cavity with an opening at one end;

a discharge cylinder connected to one end of the pump cylinder;

the mounting plate is embedded into the spitting cylinder;

the discharge pipe is embedded into the discharge cylinder body, is connected with the mounting plate and is communicated with the bottom of the discharge cylinder body;

a suction inlet communicated with the discharge cylinder;

the discharge port penetrates through the discharge cylinder body and is communicated with the discharge pipe;

the discharge connecting pipe is embedded into the pump cylinder body and communicated with the discharge pipe;

one end of the middle section is connected with the discharge connecting pipe;

the suction flared tube is connected with the other end of the middle section;

the suction holes are arranged on the suction flared tube;

the main shaft sequentially penetrates through the top of the discharge cylinder, the discharge pipe, the discharge connecting pipe, the middle section and the suction flared pipe, one end of the main shaft is rotatably connected with the suction flared pipe, and the other end of the main shaft is connected with the motor;

the inducer is sleeved on the outer side of the main shaft and embedded into the suction flared tube;

the main impeller is sleeved on the outer side of the main shaft and embedded into the middle section, and the main impeller is located above the inducer.

2. The vertical single stage cartridge pocket condensate pump of claim 1, further comprising:

the support plate is connected with the discharge connecting pipe and is fixed at the bottom of the discharge cylinder;

at least two water permeable holes are arranged on the supporting plate and are simultaneously communicated with the discharge pipe and the discharge connecting pipe;

the supporting seat is connected with the supporting plate and wound on the outer side of the main shaft;

the water lubrication bearing is embedded into the supporting seat and sleeved on the outer side of the main shaft.

3. The vertical single stage cartridge bag condensate pump of claim 2, further comprising:

a first connecting key embedded in both the inducer and the main shaft;

a second bond key embedded in both the main impeller and the main shaft.

4. The vertical single stage cartridge pocket condensate pump of claim 3, further comprising:

the guide vane is embedded into the middle section, is wound on the outer side of the main shaft and is positioned above the main impeller;

and the anti-rotation pin is embedded into the guide vane and the middle section at the same time.

5. The vertical single stage cartridge pocket condensate pump of claim 4, further comprising:

the shaft sleeve is wound on the outer side of the main shaft and is attached to the inducer;

and the fixing nut is sleeved on the outer side of the main shaft and is attached to the shaft sleeve.

6. The vertical single stage cartridge pocket condensate pump of claim 1, further comprising:

the bearing fixing seat is fixed at the top of the discharge cylinder body and is wound on the outer side of the main shaft;

the thrust bearing is embedded into the bearing fixing seat and sleeved on the outer side of the main shaft.

7. The vertical single stage cartridge pocket condensate pump of claim 6, further comprising:

the balance drum is a hollow cavity with openings at two ends, and is sleeved on the outer side of the main shaft;

the balance sleeve is wound on the outer side of the balance drum and is fixed on the mounting plate;

wherein a gap is arranged between the balance drum and the balance sleeve.

8. The vertical single stage cartridge bag condensate pump of claim 7, wherein:

the clearance between the balance drum and the balance sleeve is 0.2 mm.

9. The vertical single stage cartridge pocket condensate pump of claim 8, further comprising:

the sealing ring is an elastic body and is embedded between the pump cylinder and the discharge cylinder.

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