CN210343724U - Rotational flow self-priming pump - Google Patents

Abstract

The utility model belongs to the technical field of the pump manufacturing technique and specifically relates to a whirl self priming pump. This whirl self priming pump includes: the pump body comprises a suction chamber, an impeller chamber and a pressing chamber, wherein the suction chamber, the impeller chamber and the pressing chamber are respectively provided with a steel plate which is correspondingly processed and formed, and the steel plates are fixed by welding. The utility model discloses in, the pump body passes through the steel sheet welded fastening that suction chamber, impeller chamber, extrusion chamber correspond forms, and the surface accuracy of steel sheet is high, therefore in each passageway of entering that the rivers can be smooth, reduced the volume loss, improved hydraulic efficiency, and solved the problem that easily forms the shrinkage cavity in the cooling solidification time after the casting, avoided influencing the normal operation of whirl self priming pump, work efficiency is high.

Description

Rotational flow self-priming pump

Technical Field

The utility model belongs to the technical field of the pump manufacturing technique and specifically relates to a whirl self priming pump.

Background

The pump body runner in the self priming pump on the existing market is too narrow and small in runner area, the runner outlet is provided with a corner, the runner cross-sectional area changes unevenly, the hydraulic effect is not high in the working process, unnecessary hydraulic resources are wasted, the stator and the rotor in the motor are unreasonable in structure, the distribution of magnetic flux density magnetic circuits of all parts of a motor core is unbalanced, great loss is generated, a series of adverse effects are caused by increasing harmonic waves, the overall efficiency of the self priming pump is not high, and unnecessary hydraulic resources and electric power resources are wasted.

Please refer to fig. 1, chinese utility model patent publication No. CN201786679U discloses a high efficiency self-priming pump, which mainly comprises a pump body, a pump cover, a fan blade, a fan housing, and a motor, wherein the motor is fixed on the pump body, the fan blade is installed on a motor shaft, the fan housing is arranged at the rear end of the fan blade, and the pump cover is assembled with the pump body into a whole. The utility model optimizes the area of the inlet flow passage and the outlet flow passage in the pump body by adjusting, shortens the length of the backflow tongue piece, and adjusts the flow passage of the water pump to be smooth and balanced; the self-priming pump reduces the volume loss, greatly improves the hydraulic efficiency, optimizes the motor punching sheet and reduces the production cost of the motor. The shape and the distribution state of the stator tooth part in the motor are changed, the groove shape of the motor rotor is changed, the loss caused by a magnetic circuit is reduced, the effective utilization of resources is improved, and the self-priming pump is an ideal high-efficiency self-priming pump.

The inlet channel and the outlet channel of the high-efficiency self-priming pump are directly communicated with the pump cavity, and water at the inlet channel is easy to flow back after the self-priming pump stops working.

The casting is to pour the cast iron or steel into the prepared mould hull after melting, remove the outer cover after cooling and become the part blank, adopt this kind of craft to reduce the amount of processing, especially the appearance curved surface is more difficult to process the part to adopt the casting to solve the processing difficulty, in the prior art, because the casting kind of the self priming pump is more and the structure of the cavity is complicated, so generally for the sand casting design, unsuitable for the precision casting production, but easy to form the shrinkage cavity in the cooling solidification time after casting, influence the normal operation of the self priming pump seriously; when the thickness of the side wall partition between the runner and the chamber is too small, the side wall partition is easy to collapse, the casting resistance is too large, and the like, and the manufacturing efficiency is low and the rejection rate is high.

Referring to fig. 2, a chinese utility model patent publication No. CN205173062U discloses a self-priming pump casting, which comprises a pump body, a water inlet is arranged on the front side of the pump body, a water outlet is arranged on the top surface of the pump body, and an impeller mounting groove is arranged on the back side of the pump body; the thickness of the pump body wall at the water inlet, the water outlet and the impeller mounting groove is linearly and uniformly reduced towards the outer side by taking the water inlet, the water outlet and the impeller mounting groove as the center. The utility model discloses a position of each exit of the rational distribution pump body, save a large amount of installation space, guarantee the convenience that pipeline and cooperation part were arranged, the water inlet, the thickness of the pump body wall of delivery port and impeller mounting groove department uses the runner to evenly diminish as center outwards linearity, more be suitable for precision casting, the problem of foundry goods feeding has been solved for the gradual change formula to pump body wall thickness, the pump body wall department of keeping away from the runner after the casting cools off earlier and solidifies, the water inlet, solidify behind delivery port and the impeller mounting groove, it solidifies to form the directionality order, the self priming pump foundry goods does not have casting defects such as shrinkage cavity, guarantee the normal operation of self priming pump. The precision casting is that of wax mold, the mold is made of paraffin, the mold is rolled with paint and quartz sand, and then dewaxed to form the mold shell, the molten iron is poured in and cooled, and the mold shell is removed to form the part.

The utility model discloses a chinese utility model patent publication No. CN105478680A discloses a casting process of a pump body, which belongs to the casting field, the casting process of the pump body ensures that the metal liquid only contacts the ceramic wafer when the metal liquid is poured by inlaying the ceramic wafer in the sand mold, thereby ensuring that the metal liquid is not polluted and mixed by the molding sand in the sand mold, thereby ensuring the internal quality of the casting, meanwhile, the adopted metal liquid contains 0.04% of C, 0.7% of Si, 0.5% of Mn, 0.01% of S, 0.02% of P, 0.2% of Nb, 4% of Ni, 3% of Cu, 16% of Cr and 75.53% of Fe, the metal liquid with the composition proportion has the functions of high hardness, wear resistance and corrosion resistance, therefore, the casting process of the pump body overcomes the problem of poor hardness and wear resistance of the pump body cast by adopting the casting process in the prior art, thereby improving the hardness and wear resistance of the pump body, and the inherent quality is also ensured, and the service life of the pump body is prolonged.

According to the casting process of the pump body, the ceramic plates are embedded in the sand mold, so that metal liquid only contacts the ceramic plates when the metal liquid is poured, but the process of embedding the ceramic plates is complicated.

Chinese utility model patent publication No. CN108407157A discloses a pump case and a manufacturing method thereof, the manufacturing method is as follows:

the method comprises the following steps: manufacturing a pump shell shape upper die with a pouring gate and an observation hole and a pump shell shape lower die with a bulge in a cavity by using high-temperature alloy;

step two: manufacturing a pump shell inner cavity die by using silicon rubber;

step three: covering the pump shell inner cavity die in the step two on a bulge in the pump shell outer lower die cavity, combining the pump shell outer upper die and the pump shell outer lower die into a combined die, and forming a die cavity in the pump shell outer lower die; an upper pump shell shape die, a lower pump shell shape die, a pump shell inner cavity die and a die cavity formed in the combined die;

step four: putting the combined die in the step three into a baking box for heating for later use;

step five: heating the prepolymer in a reaction kettle, vacuumizing for dehydration, adding a curing agent Moka into the prepolymer to prepare a mixed material, and uniformly stirring;

step six: pouring the mixed material obtained in the fifth step into a casting machine;

step seven: taking the combined die out of the baking box, communicating a casting machine with a pouring gate of the upper die on the outer shape of the pump shell, and injecting the mixed material in the casting machine into a cavity of the combined die;

step eight: putting the combined die into a baking oven again, heating and keeping for 1.2-2.5 h;

step nine: and e, taking the combined die in the step eight out of the baking box, and separating the pump shell shape upper die from the pump shell shape lower die.

The pump case outer upper die and the pump case outer lower die are made of high-temperature alloy, the high-temperature alloy has the advantages of oxidation resistance, creep resistance and high strength, the manufactured pump case outer upper die and the manufactured pump case outer lower die can be recycled, energy consumption is saved, cost is reduced, the pump case inner cavity die is made of silicon rubber, the pump case inner cavity die still has elasticity when being heated to 150 ℃, the pump case inner cavity die is taken out from the interior of the pump case when being demolded, the pump case inner cavity die is prevented from scratching the interior of the pump case, but the service life of a common silicon rubber die is within 20 dies, so the service life is short, the silicon rubber die needs to be continuously manufactured again, the manufacturing cost is improved, the working procedures.

And the casting is also called vacuum casting, wherein the casting is that the part is formed by burning foam into gas and cooling the foam by high-temperature molten iron, and the gas with higher cost has larger influence on the environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a whirl self priming pump, each passageway in the pump body is smooth, and volume loss is few, and hydraulic efficiency is high.

For reaching above-mentioned advantage, the utility model provides a pair of whirl self priming pump, this whirl self priming pump include the motor and the pump body, the pump body includes suction chamber, impeller chamber, extrusion chamber, the suction chamber the impeller chamber the extrusion chamber has corresponding machine-shaping's steel sheet respectively, the steel sheet passes through welded fastening.

In an embodiment of the present invention, the suction chamber includes: the steel plate A, the steel plate B, the steel plate C, first baffle, second baffle and the third baffle that are equipped with from right side to left side in proper order between steel plate A, steel plate B and the steel plate C.

In an embodiment of the present invention, the steel plate a and the first partition plate cooperate to form the water inlet area of the suction chamber, the steel plate B and the steel plate C cooperate to form the communication with the second partition plate and the third partition plate, the water inlet area communicates with the water inlet channel through the connecting pipe.

The utility model discloses an in one embodiment, the water inlet has been seted up to the right side wall lower extreme in intake zone, the water shortage protection valve is installed to the mouth of pipe of connecting pipe, inhalant canal is lieing in the mounting hole that is used for the installation is seted up to the top of connecting pipe the water shortage protection valve.

In an embodiment of the utility model, the lateral wall of impeller room is seted up jaggedly, the middle part of breach is fixed with the dog of "7" font, the preceding terminal surface of impeller room is equipped with baffle, first collar and second collar in proper order, the dog with the baffle cooperation be used for with the breach is separated become respectively with the sunction inlet of inhalant canal intercommunication of inhalant chamber and with the pressure export of extrusion room intercommunication.

In an embodiment of the present invention, the center of the impeller chamber is further provided with a blind positioning hole for installing the impeller.

In one embodiment of the present invention, the impeller chamber further has an annular partition block for forming an annular passage from the suction port to the extrusion port in the impeller chamber, and a side of the annular partition block has a connection end extending toward and connected to the stopper.

In one embodiment of the invention, the thickness of the annular spacer is used to control the delivery volume of the impeller chamber.

In one embodiment of the present invention, the extrusion chamber comprises: the steel plate D, the steel plate E, the steel plate F, the steel plate G and a fourth clapboard, a fifth clapboard and a sixth clapboard are sequentially arranged from left to right;

a gas-liquid separation plate is arranged in the middle of the sixth separation plate towards the fifth separation plate;

the steel plate D, the steel plate E, the steel plate F, the steel plate G and the sixth partition plate form the outer wall of the extrusion chamber;

the fourth partition plate, the fifth partition plate and the gas-liquid partition plate divide the extrusion chamber into a drainage area, a reflux area and a gas-liquid separation area.

In an embodiment of the present invention, the left outer wall of the extruding chamber is provided with a water outlet, and the water outlet and the axis of the water inlet are located on the same straight line.

The utility model discloses in, the pump body is through each steel sheet stamping forming after-weld fixation formation, and the surface accuracy of steel sheet is high, therefore in each passageway of entering that the rivers can be smooth, reduced the volume loss, improved hydraulic efficiency, and solved the problem that easily forms the shrinkage cavity in the cooling solidification time after the casting, avoided influencing the normal operation of whirl self priming pump, work efficiency is high.

The utility model discloses in, through each passageway of the pump body that manufacturing method obtained and the precision of the lateral wall baffle thickness between room and the room easily master (thickness control is between 2-4 mm), solved because of the too little defect such as the resistance that appears collapsing, pouring in the manufacturing process, the rejection rate is low.

In the utility model, each steel plate of the pump body is formed by stamping or bending, so that the corresponding stamping die can be manufactured for batch production, the forming period is short, the production efficiency is high and the service life of the stamping die is long; the pump body is formed by splicing, the shape structure of the steel plate of the change part can be used for producing pump bodies of different specifications, and meanwhile, when the internal structure of the pump body needs to be adjusted, the mould corresponding to the position needing to be adjusted only needs to be changed or manufactured again, the whole mould does not need to be manufactured again like the requirement of casting process production, and the manufacturing cost is convenient and reduced.

The utility model discloses in, set up plating layer or coating anti rust coating on the surface of shaping steel sheet, solved the easy rusty problem of the pump body through casting production.

In the utility model, the water inlet area is communicated with the water inlet channel through the connecting pipe, the pipe orifice of the connecting pipe is provided with the water shortage protection valve, when the water inlet area stops water inlet, the valve is closed, so that the cyclone self-priming pump stops working and the water in the pump body is prevented from flowing back, the pump body is filled with water, and the pump body is not required to be filled with water before starting; meanwhile, the impeller is prevented from being damaged and generating noise due to the fact that the impeller is rotated in a direction opposite to the flow direction of the liquid and large resistance is generated.

The utility model discloses in, the both sides of the pump body have into water district and water drainage district respectively, and it is equipped with water inlet and outlet respectively to intake district and water drainage district, makes water can directly not enter into the impeller chamber from the water inlet and also can not follow the impeller chamber and directly discharge toward the outlet, has guaranteed the water level in the impeller chamber, and the axis of water inlet and outlet is located same straight line, makes the pressure balance between the exit of the pump body.

Drawings

Fig. 1 is a schematic structural diagram of a conventional high-efficiency self-priming pump.

Fig. 2 is a schematic structural view of a conventional self-priming pump casting.

Fig. 3 is a schematic structural view of a spiral-flow self-priming pump according to a first embodiment of the present invention.

Fig. 4 is an exploded view of the spiral flow self-primer pump of fig. 3.

FIG. 5 is a schematic cross-sectional view of the cyclonic self-primer pump of FIG. 3.

Fig. 6 shows an exploded view of the suction chamber of fig. 4.

Fig. 7 shows an exploded view of the impeller chamber of fig. 4.

Fig. 8 shows an exploded view of the suction chamber of fig. 4.

Fig. 9 is a flowchart showing a conventional process of electroplating stainless steel.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments in order to provide the best mode, structure, features and effects according to the present invention.

Please refer to fig. 3 and 4, the first embodiment of the present invention provides a spiral flow self-priming pump, which comprises: a pump body 1 and a motor (not shown), the pump body 1 including a suction chamber 11, an impeller chamber 12, and an extrusion chamber 13.

Referring to fig. 5 and 6, the suction chamber 11 includes: the suction chamber comprises a steel plate A, a steel plate B and a steel plate C, wherein a first partition plate 111, a second partition plate 112 and a third partition plate 113 are sequentially arranged between the steel plate A, the steel plate B and the steel plate C from right to left, the steel plate A and the first partition plate 111 are matched to form a water inlet area 115 of the suction chamber 11, and the steel plate B and the steel plate C are matched with the second partition plate 112 and the third partition plate 113 to form a water inlet channel 116 communicated with the impeller chamber 12. The water inlet area 115 is communicated with the water inlet channel 116 through a connecting pipe 3.

The water inlet 115a has been seted up to the right side wall lower extreme of district 115 of intaking, and the water shortage protection valve 4 is installed to the mouth of pipe of connecting pipe 3, and water shortage protection valve 4 is used for the valve to close when district 115 stops intaking of intaking and then makes whirl self priming pump stop work and prevent the water backward flow in the pump body 1.

The inlet channel 116 is provided with a mounting hole 116a for mounting the water shortage protection valve 4 above the connecting pipe 3, the radial dimension of the mounting hole 116a is larger than the outer diameter dimension of the connecting pipe 3. a transition section 116d is provided between the inlet end 116b of the inlet channel 116 and the outlet end 116c of the inlet channel 116, the section of the transition section 116d is gradually reduced towards the outlet end 116c for improving the hydraulic efficiency, the side wall of the outlet end 116c of the inlet channel 116 forms an angle α with the side wall of the transition section 116d, the angle α is used for buffering when the inlet water reaches the impeller chamber 12. preferably, the angle α is 15 °.

Referring to fig. 5 and 7, the impeller chamber 12 is a circular cup-shaped structure, a notch 120 is formed in a side wall of the impeller chamber 12, a 7-shaped stopper 14 is fixed to a middle portion of the notch 120, and a baffle 121, a first mounting ring 122 and a second mounting ring 123 are sequentially arranged on a front end surface of the impeller chamber 12. The stopper 14 cooperates with the baffle 121 to divide the notch 120 into a suction port 12a communicating with the water inlet passage 116 of the suction chamber 11 and a discharge port 12b communicating with the discharge chamber 13, respectively.

Specifically, one end surface of the stopper 14 is joined to the lower end of the sixth partition plate 133, and the other end surface is joined to the end surface of the third partition plate 113. The lower end of the second partition 112 is joined to the right sidewall of the suction port 12 a. The baffle 121 includes: the annular portion 121a, and a shielding portion 121b and a shielding portion 121c extending radially from a side surface of the annular portion 121a to shield the distal end surfaces of the water inlet passage 116 and the pressing passage 13d, respectively.

The inner diameter of the first mounting ring 122 is smaller than or equal to the radial dimension of the inner wall of the impeller chamber 12, the outer diameter of the second mounting ring 123 is equal to the inner diameter of the inner wall of the first mounting ring 122, and the inner diameter of the second mounting ring 123 is smaller than the radial dimension of the inner wall of the impeller chamber 12. The first mounting ring 122 and the second mounting ring 123 form a mounting portion for mounting the flashing.

The center of the impeller chamber 12 is provided with a blind positioning hole 124 for mounting the impeller. The impeller chamber 12 further has an annular partition block 125, and the side of the annular partition block 125 has a connection end 125a extending toward the stopper 14 and connected to the stopper 14. The annular partition block 125 is positioned at the bottom of the inner cavity of the impeller chamber 12, and the central axis of the annular partition block 125 is in the same line with the central axis of the positioning blind hole 124. The annular partition 125 is used to form an annular passage 12c in the impeller chamber 12 from the suction inlet 12a to the expression outlet 12 b. The thickness of the annular divider block 125 is used to control the delivery of the impeller chamber 12.

Referring to fig. 5 and 8, the extruding chamber 13 includes: the gas-liquid separation plate comprises a steel plate D, a steel plate E, a steel plate F, a steel plate G, a fourth partition plate 131, a fifth partition plate 132 and a sixth partition plate 133 which are sequentially arranged from left to right, and a gas-liquid separation plate 134 is arranged in the middle of the sixth partition plate 133 towards the fifth partition plate 132.

The steel plate D, the steel plate E, the steel plate F, the steel plate G, and the sixth partition 133 form an outer wall of the extruding chamber 13, and the fourth partition 131, the fifth partition 132, and the gas-liquid partition 134 divide the extruding chamber 13 into a water discharge region 13a, a reflux region 13b, and a gas-liquid separation region 13c, respectively. The gas-liquid separation plate 134 serves to break up bubbles from the impeller chamber 12 to separate gas and liquid, thereby reducing noise. The return region 13b serves to secure the water level in the impeller chamber 12.

Specifically, the steel plate D is a front outer wall of the extrusion chamber 13, the steel plate E is a rear outer wall of the extrusion chamber 13, the steel plate D and the steel plate E are arranged in parallel, and the steel plate F, the steel plate G and the sixth partition 133 are perpendicular to right, upper and left edges of the steel plate D and the steel plate E, respectively, to form a right outer wall, an upper outer wall and a left outer wall of the extrusion chamber 13. The lower end of the fourth partition 131 has an arc surface 131a engaged with the lower end of the steel plate E to close the lower end of the drain region 13 a. The fifth partition 132 is a curved plate, a first connecting portion 132a for being joined to the left side wall of the extrusion port 12b of the impeller chamber 12 is provided at the lower end of the curved plate, and a second connecting portion 133a for being joined to one end surface of the stopper 14 is provided at the lower end of the sixth partition 133. The first connecting portion 132a and the second connecting portion 133a form an extrusion passage 13d corresponding to the extrusion port 12 b.

The extrusion channel 13d is provided with a backflow partition 135, the backflow partition 135 is used for shortening the flow dividing time of the water flow and reducing the loss, the backflow partition 135 has an angle β with the central axis of the impeller chamber 12, and preferably, the angle β is 7-10 degrees.

The left outer wall of the extruding chamber 13 is provided with a water outlet 136, and the water outlet 136 and the axis of the water inlet 115a are positioned on the same straight line. Preferably, the steel E, the steel plate F and the steel plate G are integrally die-cast.

The manufacturing method of the spiral flow self-priming pump comprises the following steps:

a101: preparing a steel plate blank, wherein the thickness of the steel plate is controlled to be about 2 mm;

b101: processing and forming the shapes required by the steel plates corresponding to the suction chamber, the impeller chamber and the extrusion chamber;

c101: and welding and fixing steel plates corresponding to the suction chamber, the impeller chamber and the extrusion chamber to form a pump body.

The utility model discloses in the whirl self priming pump of second embodiment, its manufacturing method does:

a102: preparing a steel plate blank, wherein the thickness of the steel plate is controlled to be about 2 mm;

b102: processing and forming the shapes required by the steel plates corresponding to the suction chamber, the impeller chamber and the extrusion chamber;

b112, B112: electroplating a layer of electroplated layer on the surfaces of all the formed steel plates for rust prevention;

c102: and welding and fixing steel plates corresponding to the suction chamber, the impeller chamber and the extrusion chamber to form a pump body.

The utility model discloses in the whirl self priming pump of third embodiment, its manufacturing method does:

a103: preparing a steel plate blank, wherein the thickness of the steel plate is controlled to be about 2 mm;

b103: processing and forming the shapes required by the steel plates corresponding to the suction chamber, the impeller chamber and the extrusion chamber;

b113: coating a layer of antirust paint on the surfaces of all the formed steel plates;

c103: and welding and fixing steel plates corresponding to the suction chamber, the impeller chamber and the extrusion chamber to form a pump body.

Preferably, the steel plates are stainless steel plates. The processing and forming in the steps B101, B102 and B103 are one or more of stamping forming, bending forming, shearing forming and wire cutting forming. The welding in steps C101, C102, and C103 is laser brazing. The antirust paint can be stainless steel antirust paint. Further, the specific name and brand is as follows: aqueous metal baking coatings (070006).

The following is a national stainless steel surface grade table:

please refer to fig. 9, is the process flow chart of common stainless steel electroplating, with the utility model discloses in the contrast, the utility model discloses in, the pump body is through welded fastening formation behind each steel sheet stamping forming, and the surface accuracy of steel sheet is high, therefore in each passageway of entering that the rivers can be smooth, reduced the volume loss, improved hydraulic efficiency, and solved the problem that easily forms the shrinkage cavity in the cooling solidification time after the casting, avoided influencing the normal operation of whirl self priming pump, work efficiency is high.

The utility model discloses in, through each passageway of the pump body that manufacturing method obtained and the precision of the lateral wall baffle thickness between room and the room easily master (thickness control is between 2-4 mm), solved because of the too little defect such as the resistance that appears collapsing, pouring in the manufacturing process, the rejection rate is low.

In the utility model, each steel plate of the pump body is formed by stamping or bending, so that the corresponding stamping die can be manufactured for batch production, the forming period is short, the production efficiency is high and the service life of the stamping die is long; the pump body is formed by splicing, the shape structure of the steel plate of the change part can be used for producing pump bodies of different specifications, and meanwhile, when the internal structure of the pump body needs to be adjusted, the mould corresponding to the position needing to be adjusted only needs to be changed or manufactured again, the whole mould does not need to be manufactured again like the requirement of casting process production, and the manufacturing cost is convenient and reduced.

The utility model discloses in, set up plating layer or coating anti rust coating on the surface of shaping steel sheet, solved the easy rusty problem of the pump body through casting production.

In the utility model, the water inlet area is communicated with the water inlet channel through the connecting pipe, the pipe orifice of the connecting pipe is provided with the water shortage protection valve, when the water inlet area stops water inlet, the valve is closed, so that the cyclone self-priming pump stops working and the water in the pump body is prevented from flowing back, the pump body is filled with water, and the pump body is not required to be filled with water before starting; meanwhile, the impeller is prevented from being damaged and generating noise due to the fact that the impeller is rotated in a direction opposite to the flow direction of the liquid and large resistance is generated.

The utility model discloses in, the both sides of the pump body have into water district and water drainage district respectively, and it is equipped with water inlet and outlet respectively to intake district and water drainage district, makes water can directly not enter into the impeller chamber from the water inlet and also can not follow the impeller chamber and directly discharge toward the outlet, has guaranteed the water level in the impeller chamber, and the axis of water inlet and outlet is located same straight line, makes the pressure balance between the exit of the pump body.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the scope of the present invention.

Claims (10)

1. The utility model provides a whirl self priming pump, this whirl self priming pump includes the motor and the pump body, the pump body includes suction chamber, impeller chamber, extrusion chamber, its characterized in that, suction chamber the impeller chamber extrusion chamber has corresponding machine-shaping steel sheet respectively, the steel sheet passes through welded fastening.

2. The cyclonic self-primer pump of claim 1 wherein the suction chamber comprises: the steel plate A, the steel plate B, the steel plate C, first baffle, second baffle and the third baffle that are equipped with from right side to left side in proper order between steel plate A, steel plate B and the steel plate C.

3. The spiral flow self-primer pump of claim 2 wherein the steel plates a and a

The first partition plate is matched with the second partition plate to form a water inlet channel communicated with the impeller chamber, and the steel plate B and the steel plate C are matched with the second partition plate and the third partition plate to form a water inlet channel communicated with the impeller chamber, and the water inlet zone is communicated with the water inlet channel through a connecting pipe.

4. The spiral flow self-primer pump of claim 3 wherein the lower end of the right side wall of the water inlet region is provided with a water inlet, the pipe orifice of the connecting pipe is provided with a water shortage protection valve, and the water inlet channel is provided with a mounting hole for mounting the water shortage protection valve above the connecting pipe.

5. The spiral flow self-priming pump of claim 1, wherein the side wall of the impeller chamber is provided with a notch, the middle of the notch is fixed with a stop block shaped like a Chinese character '7', the front end face of the impeller chamber is sequentially provided with a baffle, a first mounting ring and a second mounting ring, and the stop block is matched with the baffle to divide the notch into a suction inlet communicated with a water inlet channel of the suction chamber and a pressure outlet communicated with the pressure chamber.

6. The cyclonic self-primer pump of claim 5 wherein the center of the impeller chamber is further provided with a blind locating hole for mounting an impeller.

7. The swirl self-primer pump of claim 5 wherein the impeller chamber further has an annular divider block for forming an annular passage within the impeller chamber from the suction inlet to the discharge outlet, the side of the annular divider block having a connecting end extending toward and connected to the stop.

8. The cyclonic self-primer pump of claim 7, wherein the ring shape is

The thickness of the block is used to control the delivery of the impeller chamber.

9. The cyclonic self-primer pump of claim 1 wherein the expression chamber comprises: the steel plate D, the steel plate E, the steel plate F, the steel plate G and a fourth clapboard, a fifth clapboard and a sixth clapboard are sequentially arranged from left to right;

a gas-liquid separation plate is arranged in the middle of the sixth separation plate towards the fifth separation plate;

the steel plate D, the steel plate E, the steel plate F, the steel plate G and the sixth partition plate form the outer wall of the extrusion chamber;

the fourth partition plate, the fifth partition plate and the gas-liquid partition plate divide the extrusion chamber into a drainage area, a reflux area and a gas-liquid separation area.

10. The spiral flow self-primer pump of claim 4 wherein the left outer wall of the extrusion chamber is provided with a water outlet, and the water outlet and the axis of the water inlet are positioned on the same straight line.

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