WO2014088126A1

WO2014088126A1 - Self-priming lifting pump directly connected to engine and having large capacity suction force

Info

Publication number: WO2014088126A1
Application number: PCT/KR2012/010440
Authority: WO
Inventors: 하명철
Original assignee: 주식회사 대흥전기
Priority date: 2012-12-04
Filing date: 2012-12-04
Publication date: 2014-06-12

Abstract

The self-priming lifting pump directly connected to an engine and having large capacity suction force according to the present invention is configured in that a spiral vortex flow chamber is formed on one side of a pump housing, an impeller is arranged in the vortex flow chamber, a curved inlet pipeline is formed between an inlet unit and a water inlet pipe on one side of the pump housing, an expansion pipeline is formed between an outlet unit of the impeller and a water outlet pipe such that the cross sectional surface of the expansion pipeline increases from an outlet point of the vortex flow chamber to the water outlet pipe, and a flow adjusting means screwed to the front surface of an outlet of the curved inlet pipeline is further arranged in the inlet unit of the impeller and in the outlet of the curved inlet pipeline so as to adjust the flow rate flowing from the water inlet pipe to the inlet unit of the impeller. Thus, the lifting pump of the present invention has excellent advantages in that the lifting pump having a differential pressure space therein operates with impellers at mid and low speed RPM by the power of an internal combustion engine in a river or reservoir so as to provide large capacity function force, thus enabling high capacity suction head per hour and performing high capacity pumping operation in a stable and smooth manner.

Description

Engine-directed self-priming pumps with large suction power

The present invention relates to a self-priming pump pump having a direct connection structure between an engine and a pump, and more particularly, the inside of a pump housing as a medium-low speed impeller rotation speed by an engine power of an internal combustion engine in a river or a reservoir. The present invention relates to an engine-directed self-contained pump pump having a large capacity suction force configured to have a large capacity suction force by forming a suction space so as to have a large capacity suction force.

In general, the pump pump receives fluid from a driver such as a motor, an engine, a turbine, or the like to transport a fluid such as a liquid or a gas through a pipe, or a fluid that pumps a fluid in a low pressure container into a high pressure container through a pipe. Says a machine.

Pump pumps were initially used in coal mine drainage, ships, and pumping, and are now widely used in buildings, waterworks, sewerage, drainage, agricultural irrigation, industrial water, power plants, and various plants. .

Such pumps are widely used for transporting not only water but also special fluids such as petroleum, various chemicals, pulp, viscous sludge, and the like.

Pumping pump can be classified into reciprocating pump, rotary pump, centrifugal pump, axial pump, friction pump and other pumps according to its structure, and depending on the use, it is classified into feed water pump, shallow well pump and deep well pump. Sometimes, a vacuum pump is used to draw a vacuum of air or other gases in a container.

In addition, depending on the degree of need for priming water in the initial operation of the pump may be divided into non-self- and self-suction pump pump.

In the conventional pump pump, the pump pump may use a pulley power transmission method connected to the impeller of the pump through the pulley to the output shaft of the engine in terms of power transmission efficiency of controlling the pump output by the engine power of the internal combustion engine. do.

However, since the output of the pump is unstable, the power transmission method connects the impeller of the pump to the power transmission shaft inscribed in the rotary gear designed to improve the stability of the pump output (hereinafter referred to as the rotary gear power transmission method). This is more widely used.

As an example of the above-described pump for pumping the rotary gear power transmission system, an engine direct pump pump for rotating the impeller of the pump by using the power of an internal combustion engine is well known.

This device directly connects the power transmission shaft and pumping impeller to receive power transmission from the rotary gear attached to the output shaft of the internal combustion engine, and installs a separate oiling device on the impeller housing cover again between the power transmission shaft and the impeller. In order to improve the durability of the pump by eliminating frictional heat generated during the transfer process.

However, in the conventional pumping pump device described above, the power of the engine reaches the movable shaft of the impeller coupled at a considerable distance from the engine only through the power transmission shaft of the rotary gear and the lubrication device. There is a problem in that the shaking or flow of the power transmission shaft is broken.

In addition, mechanical seals and packing parts of the impeller housing cover and the lubrication device intervene on the power transmission path from the engine to the impeller side, which is not only structurally complicated, but also causes damage to the seals and packing parts during prolonged frictional exposure.

In addition, the conventional engine-directed self-priming pump pump has to have a large diameter of the impeller and the pipeline to have a high capacity suction force, and thus the rotational speed of the impeller also has a high speed.

Therefore, the output specification of the engine connected to the pump pump having a high capacity suction force also has an inefficient problem that can only have a high capacity suction force when the engine of the high output specification is also mounted.

In addition, the conventional pump pump having a suction head structure by the high-speed rotational force, the impeller is to be rotated at high speed, and thus the mechanical mechanism of the lubrication device for forming a high-pressure vacuum inside the pump body in the assembly configuration with the engine output shaft As the structure of the seal is complicated, defects due to component breakage occur frequently during high-speed rotational operation. In particular, impellers that rotate at high speeds have very poor durability and have problems such as broken impeller blades.

Accordingly, there is an urgent need for an engine-directed self-priming pump that can have a high suction capacity while maintaining a low rotational speed among the impeller speeds of a high-capacity pump pump without greatly increasing the output power of the engine.

On the other hand, the conventional self-priming pumps are available in 6 inch, 8 inch, 10 inch pumps, but the larger capacity 12 inch self-priming pumps have not reached the completion stage of the product yet due to technical limitations .

The reason for this is because the impeller mounted on the inside of the pump casing and the rotary drive impeller does not exhibit a large capacity of pumping capacity.

The present invention has been made in order to solve the above-mentioned problems, the engine power of the internal combustion engine by configuring the pump pump by the curved inlet conduit and flow control means, high capacity impeller and expansion conduit provided on the water intake path of the pump housing Related to providing an engine-directed self-priming pump having a large suction force configured to exhibit a large suction force by forming a condition close to a vacuum in the pump housing while the rotary speed of the impeller rotated by medium and low speed is related. do.

In addition, the load of the power transmission shaft is supported by the shaft support housing, and the shock is absorbed and dispersed during the flow or shaking caused by the load of the impeller directly connected to the power transmission shaft, so that the output loss of the engine is low and the pumping operation can be stably performed. It is directed to providing an engine-directed self-priming pump having a large suction force.

In addition, by improving the structure of the impeller to fit the pump housing of the present invention can have a large head of more than 18m head, the introduction of the load during the initial operation can be excluded, the performance of the impeller to improve the reliability of operation It is related to providing an engine-directed self-priming pump having an improved mass suction force.

In order to achieve the above object, the self-directed pump pump having a large capacity suction force according to an embodiment of the present invention is installed on the road surface of rivers, rivers and reservoirs to use the pump and the moving plate of the engine for pumping facilities And a power transmission shaft directly connected to the engine, an impeller installed in the pump housing and coupled to the power transmission shaft and having an inlet and an outlet, respectively, which are formed on one side and the other side of the pump housing. A self-priming pump pump comprising a pipe and a water discharge pipe, wherein a spiral vortex chamber is formed at one side of the pump housing so that the impeller is installed in the vortex chamber; Between the inlet and the water inlet pipe is formed a curved inlet pipe on one side of the pump housing; An expansion conduit is formed between the outlet of the impeller and the outlet pipe so that the cross-sectional area of the pipeline gradually increases from the outlet point of the vortex chamber to the outlet pipe; At the inlet of the impeller and the outlet of the bent inlet pipe, flow control means for screwing the front of the outlet of the bent inlet pipe to adjust the flow rate flowing from the inlet pipe to the impeller inlet is further provided. It is done.

According to another embodiment of the present invention, the pump housing is partitioned by a vertical bulkhead formed up to the expansion pipe on the basis of the outer circumferential surface of the curved inlet pipe path, and an impeller mounting portion on which one side of the impeller is installed is installed on the expansion pipe path. It is formed to pass through the inlet of the impeller to intercept the flow rate of the water discharged through the outlet to maintain a stable vacuum pressure inside the vortex chamber, the other side while receiving the curved inlet conduit while the water flows into the periphery Water storage unit may be formed.

According to another embodiment of the present invention, the flow regulating means has a flow rate adjusting hole having a diameter corresponding to the inlet area of the impeller, and an assembly flange having a plurality of fastening holes formed outside the flow rate adjusting hole. And it can be made to be assembled with the front of the curved inlet pipe outlet outlet.

According to another embodiment of the present invention, the curved inlet pipe is a sloped pipe portion for guiding the water flowing into the inlet pipe vertically downward, the vertical pipe portion for falling down the water flowing through the inclined pipe portion; It may be made of a horizontal pipe portion for guiding the water passing through the vertical pipe portion in the horizontal direction toward the impeller inlet arranged in a right angle.

According to another embodiment of the present invention, a connection passage communicating with the vortex chamber and the water storage unit is formed below the vertical bulkhead so that deposits accumulated on the vortex chamber bottom are accumulated toward the water storage unit through the connection passage; The outer side of the pump housing is formed with an opening and closing hole for removing the deposit, the opening and closing may be made of the opening and closing cover which is sealed by screw fastening.

According to another embodiment of the present invention, an injection hole for supplying water into the vortex chamber and the water storage unit may be further formed at one side of the pump housing.

According to another embodiment of the present invention, the assembly of the water inlet pipe is further provided with a connection pipe bent inclined in the middle in order to be assembled while maintaining a gentle inclined direction of the suction pipe, the water pipe assembly and the transport pipe and It is further provided with a discharge pipe of the "b" shape to be connected.

The power transmission shaft is screwed to the movable plate of the engine; A shaft support part supporting one side of an outer circumferential surface of the power transmission shaft; A shaft support housing is provided between the engine and the pump housing; A shock absorbing member is further provided below the support housing; The impeller is installed at the end of the power transmission shaft in front of the pump housing, and is further provided with a mechanical seal between the power transmission shaft and the impeller.

According to another embodiment of the present invention, the mechanical seal is seated inside the shaft support, and is sealed between the shaft seal unit between the outer circumferential surface of the power transmission shaft and the shaft support, and between the pump housing and the outer circumferential surface of the power transmission shaft. And a spring that is elastically compressed and supported by the impeller seal unit and the impeller seal unit, wherein the shaft seal unit includes a rotary shaft support ring installed on an outer circumferential surface of the power transmission shaft and an outer circumferential surface of the rotary shaft support ring. The impeller seal unit includes a spacer including a stopper installed on an outer circumferential surface of a power transmission shaft coupled to the impeller, and a mounting flange extending from the stopper. Spacer ground flange and grounding flange on the outer side A second packing ring including a ring seating portion extending from one side of the ground flange and a ring support flange projecting radially from the ring seating portion, and mounted on an outer circumferential surface of the ring seating portion; It is provided with a spring fixing ring to be coupled to the protruding on one side of the body and a spacer fixing protrusion for fixing one side of the mounting flange, and a ring fixing protrusion for protruding on the other side of the body and pressing one side of the outer peripheral surface of the spring fixing ring, when assembling And a seal cover in which the outer circumferential surface of the mounting flange of the spacer and the outer circumferential surface of the spacer ground flange are seated inside the body.

According to another embodiment of the present invention, the impeller is formed in a circular shape, and a plate member having a coupling portion to which a power transmission shaft is coupled in the center; Protruding on the upper surface of the plate and a plurality of feathers arranged radially around the coupling portion; and the feather is formed to be curved in an arc shape, it may be configured to be inclined portion formed on one side.

According to another embodiment of the present invention, the number of feathers is formed in an odd number, the number of feathers is formed of 7 to 9, the inlet angle of the feather is 24 ~ 25 °, the outlet angle is 22 ~ 23 ° It is characterized by that.

According to another embodiment of the present invention, the thickness of the feather is formed to have the same thickness as the inlet portion adjacent to the coupling portion and the outlet portion adjacent to the outer circumference of the plate.

According to another embodiment of the present invention, the thickness of the inlet and outlet is 14 to 18 mm, and the thickness of the feather is formed differently from the inlet and the outlet. In the case of cast iron, the inlet is 3.5 to 7 mm, and the outlet is 4 It is characterized by a ~ 10mm.

According to another embodiment of the present invention the outlet width of the feather is 0.074 ~ 0.076 mm, the inclined portion of the feather can be formed on the inlet side.

According to another embodiment of the present invention, the coupling portion is formed in a cylindrical shape having a hollow so that the power transmission shaft is fitted, and the key coupling groove is formed to be coupled to the inner peripheral surface.

The engine direct type self-priming pump having a large suction capacity according to the present invention operates a pump having a medium and low speed impeller rotation in the river water or a reservoir to operate a pump having a differential pressure space therein. Providing suction power enables high capacity suction lifts per hour, and large capacity pumping operations can be made stable and smooth.

Therefore, it is suitable for supplying water in long or long distance to the suction line, and it is installed in a place where electricity is not supplied, and exhibits excellent advantages such as economical water pump by operating a minimum manpower during operation. .

In addition, the load of the power transmission shaft is supported by the shaft support housing, and the shock is absorbed and dispersed during the flow or shaking caused by the load of the impeller directly connected to the power transmission shaft, so it is structurally simple, so that the power loss is low and the pumping operation is stable. There is an advantage that can be performed.

In addition, by improving the structure of the impeller according to the pump housing of the present invention can have a large capacity head of 18m or more head, the introduction of the carriage during the initial operation can be excluded, the operation reliability can be improved.

1 is a side cross-sectional view showing an assembled state of an engine direct type self-priming pump having a large suction force according to the present invention;

Figure 2 is an exploded perspective view showing the internal structure of the engine-direct self-priming pump pump having a large suction capacity according to the present invention,

3 and 4 are a front sectional view and a cutaway perspective view showing the configuration of the pump housing and the impeller applied to the engine direct-type self-priming pump pump having a large suction force according to the present invention,

5 and 6 are a front perspective view and a rear perspective view showing the external configuration of the housing of the self-directed pump pump having a large capacity suction force according to the present invention,

Figure 7 is a perspective view of the use state of the engine direct type self-priming pump having a large suction force in accordance with the present invention,

Figure 8 is an exploded perspective view showing the configuration of the shaft support housing of the engine direct type self-priming pump pump having a large suction force according to the present invention,

9 and 10 is an exploded perspective view and enlarged sectional view showing the configuration of the mechanical seal of the engine direct type self-priming pump pump having a large capacity suction force according to the present invention,

11 (a), (b) to Figure 13 is a perspective view, a front view and a longitudinal cross-sectional view showing the configuration of the impeller of the engine direct self-priming pump pump having a large capacity suction force according to the present invention.

20: shaft support housing 21: shaft support

30: shaft seal unit 31: rotary shaft support ring

32: first packing ring 33: inner circumference

34: packing ground part 35: stopper

36: annular groove

40 impeller seal unit 41 spacer

42: second packing ring 43: fixing ring

44: seal cover 45: mounting flange

46: ground flange 47: ring seat

48:

ring support flange

49a, 49b: ring fixing protrusion

50: spring 51a: crimping portion

51b: Crimp Groove

100: power transmission shaft 100a: fixed flange

100b: tip

200: pump housing 201: inlet pipe

202: water outlet 203: opening and closing

204: opening and closing cover 205: inlet

206: maintenance hole 207: maintenance cover

210: vortex chamber 220: curved inlet pipe

221: inclined pipe 222: vertical pipe

223: horizontal pipe

230: extension pipe 240: vertical bulkhead

241: connecting passage 250: impeller mounting portion

260: water storage unit 270: connector

280: discharge pipe

300: impeller 301: entrance

302: exit portion 310: plate

320: feather 322: inclined portion

330: coupling part

400: flow control means 410: flow control holes

420: fastening hole 430: assembly flange

500: shock absorbing member 600: mechanical seal

E: engine S: moving plate

C: Balance G: Sediment

P1: Suction line P2: Transport line

Hereinafter, with reference to the accompanying drawings will be described an engine direct type self-priming pump having a large capacity suction force according to an embodiment of the present invention.

1 is a side cross-sectional view showing the assembled state of the engine direct-type self-priming pump pump having a large capacity suction force according to the present invention, Figure 2 is an internal structure of the engine direct-type self-priming pump pump having a large capacity suction force according to the present invention 3 and 4 are front and sectional views showing the configuration of a pump housing and an impeller applied to an engine direct type self-priming pump having a large suction force according to the present invention, and FIGS. 5 and 6 are Front and rear perspective views showing the external appearance of the housing of the self-directed pump pump having a large capacity suction force according to the present invention, Figure 7 is a state of use of the engine direct type self-contained pump pump having a large capacity suction force according to the present invention Perspective view.

The engine direct type self-priming pump having a large suction force according to the present invention according to the present invention is installed on the road surface of rivers, rivers and reservoirs, and is used to move the pump (S) of the engine (E) and the pump for use as a pumping facility. It is provided with a direct structure, the power transmission shaft 100 directly connected to the engine (E), coupled with the power transmission shaft 100 is installed in the pump housing 200, the inlet 301 and the outlet Impeller 300 having a 302, and the water inlet pipe 201 and the discharge pipe 202 formed on one side and the other side of the pump housing 200 is made of a basic configuration of the self-priming pump.

A spiral vortex chamber 210 is formed at one side of the pump housing 200 so that the impeller 300 is installed in the vortex chamber 210.

In addition, the inlet 301 and the inlet pipe 201, the curved inlet pipe 220 is formed on one side of the pump housing 200, this configuration corresponds to the main features of the features of the present invention It is a configuration.

That is, when the water sucked by the rotation of the impeller 300 directly enters the inlet 301 of the impeller 300, the suction force of the incoming water and the discharge pressure due to the rotation of the impeller 300 act as the same force. As a result, it has a pumping capacity corresponding to the rotational speed of the power transmission shaft as in the prior art.

Therefore, in the conventional self-priming pump, it is difficult to develop a pump having a large suction force using a rotation speed of the impeller 300 as a medium and low speed rotation speed.

However, the present invention is configured to solve this by having a curved inlet pipe 220 between the inlet 301 and the inlet pipe 201.

That is, according to another embodiment of the present invention, in the above-described basic configuration, the curved inlet pipe line 220 includes an inclined pipe part 221, a vertical pipe part 222, and a horizontal pipe part 223.

The inclined pipe part 221 guides the water flowing into the water inlet pipe 201 vertically downward.

The vertical pipe part 222 guides the water flowing down through the inclined pipe part 221 to fall downward.

In addition, the horizontal pipe portion 223 guides the water passing through the vertical pipe portion 222 in the horizontal direction toward the impeller 300 inlet 301 disposed in a right angle.

As the curved inlet pipe 220 is composed of the inclined pipe part 221, the vertical pipe part 222 and the horizontal pipe part 223, the water flowing through the suction pipe P1 is inclined pipe part 221. When entering into) to form a flow path bent at the same time hit the inclined surface to generate an appropriate suction resistance so that the air layer due to the pressure change in the inner section of the pipeline between the inclined pipe portion 221 and the suction pipe (P1) is not formed. .

In addition, since the water rapidly falling into the vertical pipe portion 222 bent downward forms a flow path that is bent into the horizontal pipe portion 223 again, the flow rate before the water enters the inlet 301 of the impeller 300. Alternatively, the water may be supplied to the inlet 301 of the impeller 300 while maintaining the change in flow rate.

According to this configuration, while the impeller 300 is not rotated at high speed but rotates at low and medium speeds, the vortex chamber 210 is maintained through the impeller 300 while maintaining an appropriate flow rate and flow rate in a curved form through the curved inlet pipe 220. ) Will maintain a stable suction force close to the vacuum and by this action the water can be discharged to the outlet pipe 202 side with little change in pressure.

For example, since the amount of water introduced and the amount of water discharged during the constant rotation of the impeller 300 maintain the same amount, the pressure is almost maintained without changing the discharge pressure in the process supplied through the discharge pipe 280. Therefore, it is possible to supply water up to long distance (up to 6m vertically and 100m horizontally, so that water can be supplied up to 300m without decreasing the flow rate).

Here, although the supply distance of the water can be increased up to 700m, but 30 ~ 40% of the flow rate can be reduced, but the current supplying a large amount of water using the rotation speed of the medium and low speed impeller 300 horizontally to 300m or more to 700m The pump is not present.

Accordingly, the specification of the engine E applied to the present invention is as follows.

a) For 6 inch (150 mm) engine pumps (30-45 hp)

b) For 8 inch (200 mm) engine pumps (60-95 hp)

c) For 10 inch (250 mm) engine pumps (187-202 hp) are preferred.

In particular, in the case of 12 inches (3000mm), it was confirmed through the pumping test as follows that the pump pump (250-270hp) is applicable to the high capacity pumping.

In addition, the rotation RPM of the engine E is preferably 1,800 RPM, 1050 RPM at no load (idle idle), and 970 RPM at load (when water is discharged).

Therefore, the optimum speed for pumping a lot of water is 970 RPM with the most suitable speed.

For example, when pumping at more than 970 RPM, the flow rate is faster and the amount of water is reduced. Therefore, this standard may be properly adjusted and operated based on 970 rpm according to the type of water and pumping distance.

In addition, according to the configuration as described above, in particular, the air in the vortex chamber 210 is to be quickly discharged even if there is no grease inside the vortex chamber 210 during the initial operation of the pump, and at the same time the inlet 301 of the impeller 300 To keep the time difference.

Therefore, the inside of the vortex chamber 210 is the suction force close to the vacuum by the time difference is generated so that the water sucked through the curved inlet pipe 220 and the suction pipe (P1) to be introduced at a stable flow rate and flow rate. Will be effective.

On the other hand, between the outlet portion 302 and the outlet pipe 202 of the impeller 300 is an expansion conduit made so that the cross-sectional area of the pipe gradually increases from the exit point of the vortex chamber 210 to the outlet pipe 202 ( 230 is formed.

According to this configuration, when water is stably supplied to the inlet 301 of the impeller 300 and discharged to the outlet pipe 202 via the spiral vortex chamber 210 through the outlet 302 of the impeller 300. Since the passage area is changed by the expansion pipe 230 on the outlet 302 side than the pipeline area of the vortex chamber 210, the flow rate of the water discharge flow rate can be increased while maintaining the rotational speed of the impeller 300.

Therefore, the water and the discharge introduced on the basis of the impeller 300 are always introduced at a constant flow rate and flow rate, so that a stable discharge is made, so that the vacuum pressure inside the pump housing 200 can be stably maintained without change. It is possible to complete the self-suction pump having a large suction force capable of sufficient suction lift by the impeller 300 rotated at a low speed of the medium.

On the other hand, the inlet portion 301 of the impeller 300 and the bent inlet pipe 220, the outlet to adjust the flow rate flowing from the inlet pipe 201 to the inlet portion 301 of the impeller 300 It may be further provided with a flow rate adjusting means 400 is assembled to the bent inlet pipe 220 outlet front.

For example, the size of the impeller 300 or the angle and thickness of the feather 320 may be varied even within a pump having the same specification, depending on the use place of the engine-directed self-priming pump or the viscosity or type of water.

However, the design of the impeller 300 is very sensitive to the volume of the vortex chamber 210 and the helical shape (volute curve), which in turn may be an important factor in determining the performance of the pump. Changing the pump's performance or specifications by changing the cost can lead to economic waste and loss of time.

Therefore, in the present invention, the flow rate adjusting means 400 controls the amount of water supplied to the inlet 301 of the curved type inlet pipe 220, that is, the impeller 300, as the flow rate adjusting section, thereby improving the performance and performance of the pump. It is to provide a novel configuration that the specification appropriately corresponds to the rotational speed of the impeller 300 according to the type of water or the main use of the pump.

Looking at an example of the flow control means 400 as described above the flow rate control means 400 is formed in the center of the flow rate adjustment hole 410 having a diameter corresponding to the inlet 301 area of the impeller 300 In addition, an assembly flange 430 having a plurality of fastening holes 420 formed outside the flow rate adjusting hole 410 may be formed to be assembled with the front surface of the outlet of the curved inlet pipe 220.

Therefore, the inlet of the impeller 300 by allowing the flow rate adjusting means 400 formed with different sizes of the flow rate adjusting holes 410 to be assembled, separated, and replaced by a screw type in front of the outlet of the curved inlet pipe 220. It is possible to achieve the above-described purpose by allowing a simple and stable adjustment of the amount of water flowing into the unit 301.

In addition, according to another embodiment of the present invention, the pump housing 200 is partitioned by a vertical bulkhead 240 formed up to the expansion pipe line 230 based on the outer peripheral surface of the curved inlet pipe line 220. Can be.

As such, the impeller mounting part 250 in which the impeller 300 is installed is formed at one side of the pump housing 200 partitioned by the vertical bulkhead 240 so as to communicate with the expansion pipe 230. Intermittent flow of the water discharged through the inlet 301 through the inlet 302 of the vortex chamber 210 to maintain a stable vacuum pressure.

The water storage unit 260 may be formed at the other side of the impeller mounting part 250 while receiving the curved inflow pipe line 220 and introducing water into the periphery thereof.

According to this configuration, the water storage unit 260 is composed of the impeller mounting portion 250 and the area up to the expansion pipe 230 and the water outlet pipe 202, and the curved inlet pipe 220 is the pump housing 200 The water flowing in by the impeller 300 is filled with the entire pump housing 200 because the water storage unit 260 is formed together with the water storage unit 260.

Therefore, since the water is filled up to the inclined pipe part 221 of the curved storage part by the water stored in the water storage part 260 when the pump is re-operated, the pump can be driven without the need for a separate pick-up during re-operation.

This configuration has the advantage of smoothly operating the pump even when there is no separate manager when operating the engine direct self-priming pump pump of the present invention without an operator or the installation section of the pump is remote Will be provided.

According to the engine direct type self-priming pump having a large suction force configured as described above in the process of supplying through the discharge pipe 280 by maintaining the same amount of water and the amount of water discharged during the constant rotation of the impeller 300 As the discharge pressure is maintained almost unchanged, the water can be supplied to a long distance (up to 6m vertically and 100m horizontally so that water can be supplied without decreasing the flow rate up to 300m).

According to such a structure, this invention can be used suitably also for the pumping of the water in the place where gravel, stone, and earth and sand are located.

That is, since the pump inner impeller is applied by the powerful suction force by the impeller 300 which is rotated at medium and low speeds, the pumping of water mixed with gravel, stone, and soil is sufficient even when the ratio of water and soil is about 7: 3. There is an advantage that can be inhaled and discharged sufficiently.

However, since the conventional pumps are mostly composed of a pump by a high speed of rotation, the water mixed with the above water, earth and sand, gravel, etc. has a limit that cannot be sucked.

On the other hand, as shown in Figure 7, the engine-directed self-priming pump pump having a large capacity suction force may be mounted to the cart (C) for the convenience of mobility.

That is, the engine (E) is arranged in the center of the truck (C) and is configured to move like a trailer on the rear of the transport vehicle, the engine-direct self-priming pump pump of the present invention is mounted on the output of the engine (E) The suction pipe (P1) is connected to the inlet pipe 201 disposed in front of it, the transport pipe (P2) is connected to the discharge pipe 202 may be configured to pump the water to the desired place.

According to such a trolley (C) mounting structure of the present invention to improve the mobility it is to exhibit the effect that can be quickly operated by operating the pump anywhere.

On the other hand, a connection passage 241 communicating with the vortex chamber 210 and the water storage unit 260 is formed below the vertical bulkhead 240 so that the sediment (G) accumulated at the bottom of the vortex chamber 210 is connected. It is configured to be stacked toward the water storage unit 260 through the passage (241).

In the process of operating the pump, there are various types of precipitates (G) included in the water depending on the type of water, and the precipitates (G) are accumulated at the bottom of the pump housing (200).

However, the conventional pump housings have a problem that causes impairment of the impeller 300 because of the sediment (G) because there is no space for collecting the sediment (G) therein, and easily remove the sediment (G) There was a cumbersome problem that could not be completely disassembled and removed.

In the present invention, since the connection passage 241 for gathering the sediment (G) mainly accumulated in the lower portion of the impeller (300) to the lower side of the water storage unit (260) is provided, the sediment (G) is collected through this passage. .

Therefore, according to the present invention, an opening and closing hole 203 for removing the deposit G is formed at an outer side of the pump housing 200, and the opening and closing cover 204 is sealed and screwed to the opening and closing hole 203. It is preferable that further be provided.

As such, when the opening and closing cover 204 is opened while the operation of the pump is stopped for a while, the water in the water storage unit 260 flows out and is simply configured to be discharged together with the sediment (G).

On the other hand, the engine-directed self-sufficient pump pump having a large capacity suction force according to the present invention is the inlet 205 for supplying water into the vortex chamber 210 and the water storage unit 260 on the upper side of the pump housing 200. ) Is further configured to replenish water in the water storage unit 260 as needed.

In addition, the engine direct type self-priming pump pump having a large capacity suction force according to the present invention is connected to the inlet of the inlet pipe 201, the inlet pipe (P1) is bent in the middle inclined to be assembled to maintain a gentle inclined direction The pipe 270 is further provided, and the discharge pipe 202 assembly portion is further provided with a discharge pipe 280 of the "b" shape for connecting with the transport pipe (P2).

In addition, the reference numeral 500 shown in the drawing may be configured as a vibration isolator as the shock absorbing member 500.

Therefore, the shock absorbing member 500 may further reduce vibration or shock generated when the engine E and the pump are operated while the movable plate S of the engine E and the power transmission shaft 100 are connected to each other. It offers the advantage of ensuring a stable pumping operation.

Reference numeral 206 denotes a maintenance hole, and 207 is sealed by screwing and sealing the entire surface of the maintenance hole as a maintenance cover.

On the other hand, Figure 8 is an exploded perspective view showing the configuration of the shaft support housing of the self-directed pump pump having a large capacity suction force according to the present invention, Figures 9 and 10 are engine direct type having a large capacity suction force according to the present invention. An exploded perspective view and an enlarged sectional view of the main part of the mechanical seal of the suction pump.

Referring to this, the mechanical seal 600 according to another embodiment of the present invention is firmly sealed even if a shake or flow of the power transmission shaft 100 and the impeller 300 occurs on the power transmission path of the engine E. Bar,

A power transmission shaft (100) having a fixed flange (100a) connected to the movable plate (S) provided at one side of the engine (E) and rotatable by the power of the engine (E);

The impeller 300 is installed in the pump housing 200 and the water inlet pipe 201 and the water outlet pipe 202 respectively formed on one side of the pump housing 200, the impeller 300 is the power transmission It is coupled to the other front end portion 100b of the shaft 100 and configured to rotate by the power transmission shaft 100.

And a shaft support housing 21 for supporting one side of the outer circumferential surface of the power transmission shaft 100, the shaft support housing 20 being installed between the engine E and the pump housing 200. It is composed.

A shaft seal unit 30 seated inside the shaft support part 21 and sealed between an outer circumferential surface of the power transmission shaft 100 and the shaft support part 21;

An impeller seal unit 40 sealed between the pump housing 200 and an outer circumferential surface of the power transmission shaft 100;

It includes a spring 50 that is elastically compressed and supported on the impeller seal unit 40,

The shaft seal unit 30,

The rotating shaft support ring 31 is installed on the outer circumferential surface of the power transmission shaft 100, and the first packing ring 32 is fitted on the outer circumferential surface of the rotary shaft support ring 31.

Typically, the engine direct type self-priming pump pump has a direct connection structure between the engine E and the pump for pumping driving, as shown in FIG. 1, and one side of the power transmission shaft 100 is connected to the engine E side. Impeller 300 provided in the pump housing 200 is coupled to the longitudinal front end portion (100b) of the).

Here, an impeller fixing coupling (N) including a nut may be used to prevent axial deviation of the impeller 300 from the power transmission shaft 100.

For example, during rotation operation of the engine E as an internal combustion engine, the rotational power of the engine E is connected to the engine E moving plate S through the fixed flange 2a and the power transmission shaft 100. The other end of the power transmission shaft (100) is transmitted to the impeller 300 coupled to the key from the other end portion (100b), and during the pumping operation by the rotation of the impeller 300 through the inlet pipe 201 into the pump housing 200 Incoming water is discharged through the outlet pipe 202.

The power transmission shaft 100 extends along the longitudinal direction, and has a stepped structure having a different diameter. Preferably, the power transmission shaft 100 is relatively farther from the fixed flange 100a, for example, toward the front end portion 100b. It has a small diameter outer peripheral surface.

Between the engine E and the pump housing 200 or the impeller 300, a shaft support housing 20 having the shaft support 21 is installed for stable support of the power transmission shaft 100. The shaft seal unit 30 is seated in the shaft support 21. The shaft seal unit 30 performs a function of strictly contacting and supporting the gap between the outer circumferential surface of the power transmission shaft 100 and the shaft support 21.

The inner circumferential surface 33 of the rotary shaft support ring 31 of the shaft seal unit 30 is in contact with the outer circumferential surface of the power transmission shaft, and the outer circumferential surface 34 of the rotary shaft support ring 31 forms a packing ground portion 34.

In order to support the lateral pressure applied to the rotary shaft support ring 31, a stopper 35 protruding to one side of the rotary shaft support ring 31 may be configured.

Meanwhile, the packing grounding part 34 is seated in the first packing ring 32, and a plurality of annular grooves are in contact with and supported in the shaft support part 21 on the outer circumferential surface of the first packing ring 32. A part 36 is provided.

Thus, the airtightness between the power transmission shaft 100 and the shaft support 21 is maintained by the shaft sealing ring 30.

On the other hand, the impeller seal unit 40 is configured to include a spacer 41, the second packing ring 42, a spring fixing ring 43 and the seal cover 44.

The spacer 41 includes a stopper 35 installed on an outer circumferential surface of the power transmission shaft 100 coupled to the impeller 300 and a mounting flange 45 extending from the stopper 35. do.

Preferably, the spacer ground flange 46 which is grounded on the outer surface of the mounting flange 45 and the ring seat portion 47 which extends from one side of the spacer ground flange 46 are connected to the second packing ring 42. And a ring support flange 48 protruding radially from the ring seat 47.

The spring fixing ring 43 is mounted on the outer peripheral surface of the ring seat 47, the spring 50 may be fitted to the outer surface of the spring fixing ring 43.

The spring 50 is preferably a compression spring, when one side of the spring 50 is fixed to the outside of the spring fixing ring 43, the other side of the spring 50 is the impeller 300 or the pump housing ( 200 may be supported on one side.

On the other hand, the seal cover 44, protruding on one side of the body and the spacer fixing projection (49a) for fixing one side of the mounting flange 45, protruding formed on the other side of the body and the outer peripheral surface of the spring fixing ring 43 The ring fixing protrusion 49b pressurizes one side, and an outer circumferential surface of the mounting flange 45 of the spacer 41 and an outer circumferential surface of the spacer ground flange 46 are seated in the body when assembled.

The spacer fixing protrusion 49a may be structurally formed in plurality, but may be spaced apart at a predetermined angle, for example, 90 ° to 120 °.

The ring fixing protrusion 49b may also be spaced apart at a predetermined angle, for example, 90 ° to 120 °.

In addition, the pressing portion 51a is formed on one side of the body of the seal bur 44, and the mounting flange 45 is formed with pressing grooves 51b corresponding to the pressing portion 51a, respectively.

When assembling the seal cover 44 and the spacer 41 according to an embodiment of the present invention, the pressing portion 51a of the seal cover 44 is on the pressing groove 51b of the mounting flange 51b. Squeezed on.

In addition, in order to support the crimping of the spring fixing ring 43, when assembling, the ring fixing protrusion 49b of the seal cover 44 is formed on the body outer circumferential surface of the spring fixing ring 43. It is installed in close contact.

The crimping portion 51a and the crimping groove 51b may be structurally formed in plural, but may be variously modified and disposed within a predetermined angle, for example, 90 ° to 120 ° angle range.

As described above, the seal device for the engine pump device according to an embodiment of the present invention even if the shaking or flow of the power transmission shaft 100 and the impeller 300 on the power transmission path of the engine (E) seal state The shaft seal unit 30 and the impeller seal unit 40 are respectively assembled and installed on the power transmission shaft 100 so as to keep them firm.

For example, when the power transmission shaft 100 is coupled to the shaft support 21 and the impeller 300 of the pump housing 200, the shaft seal unit 30 is inside the shaft support 21. It is seated and the impeller seal unit 40 is seated inside the pump housing 200 adjacent to one side of the impeller 300.

The spring fixing ring 43 is prevented from axial separation by the ring support flange 48 of the second packing ring 42 and at the same time the power transmission by the ring fixing projection (49b) of the seal cover 44 Radial deviation of the shaft 100 is prevented.

In addition, the spacer 31 is prevented from being separated in the axial direction by the spacer fixing protrusion 49a of the seal cover 44, and at the same time, the pressing part 51a of the seal cover 44 and the mounting flange 45 are compressed. The radial separation of the power transmission shaft 100 is prevented by the crimping support force between the grooves 51b.

Preferably, when the power transmission shaft 100 is press-installed on the inner circumferential surface of the spring fixing ring 43, the impeller 300 on the outside of the spring 50 fixed to the spring fixing ring 43 One side may be elastically pressed.

The pressure applied to the spring fixing ring 43 by the elastic force of the spring 50 acts toward the longitudinal direction of the impeller seal unit 40 in the power transmission shaft 100, preferably the The spring fixing ring 43 and the seal cover 44 are elastically pressurized toward the side wall 3a of the pump housing 200 by the elastic force of the spring 50.

It is typically grounded directly to the outer peripheral surface of the sealing element, for example, the power transmission shaft 100 through the power transmission shaft 100 when the rotation of the impeller 300 rotates at high speed for pumping and pumping driving. Even when the spring retaining ring 43 or the spacer 41 is subjected to shaking, vibration or flow, the entire sealing elements can be firmly maintained without causing a deviation of the mounting position by the elastic force of the spring 50.

On the other hand, Figures 11 to 13 is a perspective view, a front view and a longitudinal sectional view showing the configuration of the impeller of the engine direct type self-priming pump pump having a large suction force according to the present invention.

Referring to this, the engine-directed self-priming pump having a large suction force according to another embodiment of the present invention is installed on the road surface of rivers, rivers and reservoirs as described above, and uses the engine 500 and pumps for use as pumping facilities. Having a direct connection structure of (A),

A power transmission shaft 100 directly connected to the engine E; Is installed inside the pump housing 200 and has an impeller 300 coupled to the power transmission shaft 100, and the inlet pipe 201 and the outlet pipe 202 formed on one side of the pump housing 200, respectively In addition, the impeller 300 is coupled to the other front end of the power transmission shaft 100 is pumped by the power of the engine (E).

The impeller 300 of the basic configuration, the plate member 310 is formed in a circular shape, the coupling portion 330 is formed in the center is coupled to the power transmission shaft 100; Protrudingly formed on the upper surface of the plate 310 and a plurality of feathers 320 arranged radially around the coupling portion 330; comprises.

The feather 320 is formed to be curved in an arc shape, the inclined portion is chamfered inclined to the upper one side edge is formed in the inclined portion (322). Preferably, as shown in FIG. 11 (a), the inclined portion 322 of the feather 320 is formed at the inlet side. Alternatively, as shown in FIG. 11B, the inclined portion 322 of the 20 may be formed at the outlet side.

As shown, the feather 320 is arranged radially around the coupling portion 330, the number is formed of an odd number between 1-9. More specifically, the number of feathers 320 is preferably formed of 7-9.

In addition, looking at the shape of the feather (320), generally made of an arc shape, the inlet angle of the feather (320) is 24 to 25 °, the outlet angle is set to 22 to 23 °.

The inlet of the feather 320 refers to a portion proximate to the coupling portion 330, and the outlet is defined as referring to a portion proximate to the outer circumference of the plate 310.

In addition, the thickness of the feather 320 is equal to the thickness of the inlet portion 301 close to the coupling portion 330 and the outlet portion 302 close to the outer circumference of the plate 310.

More specifically, the thickness of the inlet part 301 and the outlet part 302 is 14-18 mm, and especially 15 mm is suitable.

In addition, the inlet portion 301 and the outlet portion 302 may have different thicknesses of the feather 320.

When the material of the collar 320 is cast iron, the inlet 301 of the collar 320 is 3.5 ~ 7mm, the outlet 302 is formed of 4 ~ 10mm.

In addition, the outlet width of the feather 320 is preferably 0.074 to 0.076 mm.

Coupling portion 330 is formed in a cylindrical shape having a hollow so that the power transmission shaft 100 is fitted, the key is coupled to the inner peripheral surface The key coupling groove 332 is formed.

Hereinafter, the basic design of the 12-inch pump among the specific embodiments of the present invention.

EXAMPLE

* Basic design of 12 inch self-priming pump

Condition: Flow rate (Q) = 15㎥ / min, Target head (H) = 20m

1. Specific speed

N _S = N * (Q ^1/2 / H ^3/4 ) [prm]

= 970 * (15 ^1/2 / 20 ^3/4 ) -397.2

Pump efficiency η = 85% η = η _m * η _v * η _h

η _m = 0.95

η _v = 0.95

Assume η _h = 0.94.

2. Main speed U ₂ and outside diameter d of the turning wheel, inlet diameter d ₁₀

K _U2m = 1.06

K _U20 = 1.11

K _m2 = 0.164

K _m1 = 0.214

d ₁₀ / d ₂₀ = 0.59

d ₁₀ / d _2m = 0.64

U _2m = KU _2m * √2gh = 1.06 * √2 (9.81) (20) = 20 m / s

d _2m = 60 * u _2m / π * N = 60 * 21 / π * 970 = 0.414 m

U ₂₀ = KU ₂₀ * √2gh = 1.11 * √2 (9.81) (20) = 22 m / s

d ₂₀ = 60 * u ₂₀ / π * N = 60 * 22 / π * 970 = 0.433 m

d ₁₀ = 0.59 * d ₂₀ = 0.59 * 0.433-0.255 m

Or d ₁₀ = 0.67 * d _2m = 0.64 * 0.414 = 0.265 m

₁₀ d ₁₀ = 0.26m first.

3. Velocity at the entrance and exit of the turning wheel

C _m2 = K _m2 * √2gh = 0.164 * √2 (9.81) (20) = 3.25 m / s

C _m1 = K _m1 * √2gh = 0.214 * √2 (9.81) (20) = 4.24 m / s

4. Average diameter d _1m of feather inlet, inlet width b ₁

η _v = 0.95%

V = Q / η _v = 15 / 0.95 = 15.789㎥ / min = 0.263㎥ / s

Assuming V = 0.4 m / s,

b ₁ / d ₁₀ = 0.25,

₁ b ₁ = 0.25 * 0.26 = 0.065 m

d _{1 m} / d ₁₀ = 0.87,

₁ d _1m = 0.87 * 0.26 = 0.226m

* Ramp δ = 33 °

C _m1 = v / (π * d _1m * b ₁ ) = 0.263 / (3.14 * 0.226 * 0.065) = 5.7m / s

Since C _m1 = 4.24 m / s in item 3 above, d ₁₀ should be selected again.

∴ b1 / d1m = 0.287

V / (π * d1m * (0.287) * d1m) = 4.24

1 d1m = √0.263 / (3.14 * 0.287 * 4.24) = 0.262

d _1m = 0.262

d ₁₀ = 0.301

b ₁ = 0.075

C _m1 = 0.263 / (π * 0.262 * 0.075) = 4.26 m / s

U _{1 m} = (π * 0.262 * 970) / 60 = 13.3 m / s

5. Collar inlet angle β _1m and outlet angle β _2m (λ: Acceleration rate by feather thickness)

β _1m = tan ^-1 (λCm / U _1m ) = tan ^-1 (1.45 (4.26) /13.3) = 25 °

β _2m = 22.5 °.

6. Feather (Z)

Z = β _2m / 3 = 22.5 / 3 = 7.5 ≒ 7 sheets

7. Feather thickness (S) (inlet: S ₁ , outlet: S ₂ )

Select S ₁ = S ₂ = 15mm (consider severe sand and gravel wear)

※ For general cast iron, S ₁ = 3.5 ~ 7mm, S ₂ = 4 ~ 10mm

S _u1 = 15 / sinβ _1m = 15 / sin (25) = 0.035 = 35mm

λ ₁ = (π (d _1m / Z)) / (π (d _1m / Z) -S _u1 ) = (3.14 (0.262 / 7)) / ((3.14 (0.262 / 7) -0.035) = 1.42

Similar to the assumption λ ₁ = 1.45,

β _1m = 25 °

S ₁ = 15 mm

S _u1 = 35mm.

8. Outlet width b ₂

S _u2 = S / sinβ2 _m = (0.015 / sin (22.5)) = 0.039 m

b ₂ = V / (πd _2m -ZS _u2 ) * C _m2 = 0.263 / (3.14 (0.414) -7 (0.039)) = 0.0788 m

≒ 0.075 m

9. Check total head (H)

* Assuming there is no slip, at exit exit

_{_{C u2∞ = U 2m - (C}} m2 / tan (β2 m)) = (3.14 (0.414) * 970/50) - (3.25 / tan (22.5)) = 28.21 m

Considering the slip (wisener expression)

ε _limit = (1 / (exp (8.16sinβ ₂ } / Z)) = (1 / (exp {8.16sin (22.5)} / 7)) = 0.64

d _1m / d _2m = 0.194 / 0.414 = 0.468 <0.64

δ = 1- √sinβ ₂ / Z ^0.7 = 1-√sin (22.5) / 7 ^0.7 = 0.842

C _u2m = C _u2∞ -U _2m (1-δ)

= 13.17- (21.0 * (1-0.842)) = 9.85 m / s

H _th = U _2m * C _u2m / g = ((21.0) (9.85)) / 9.81 = 21.08 m

H = η _h * Hth = 0.94 * 21.08 = 19.8 ≒ 20 m

Thus, a head value very close to the actual target head can be obtained.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, all such modifications and modifications being attached It is obvious that the claims belong to the claims.

Engine-directed self-priming pump pump having a large suction force according to the present invention can be variously modified by those skilled in the art without departing from the scope of the claims defined in the claims, The technical protection scope is not limited to the specific preferred embodiments described above.

Claims

It is installed on the road surface of river, river and reservoir, and has a direct connection structure of the moving plate of the engine and the pump for use as a pumping facility, and is connected to the power transmission shaft directly connected to the engine, and coupled to the power transmission shaft to form a pump housing. In the self-contained pump pump is provided in the impeller having an inlet and outlet, and the water inlet and outlet pipes formed on one side and the other side of the pump housing,

A spiral vortex chamber is formed at one side of the pump housing so that the impeller is installed in the vortex chamber;

Between the inlet portion and the water inlet pipe is a curved inlet pipe is formed on one side of the pump housing;

An expansion conduit is formed between the outlet of the impeller and the outlet pipe so that the cross-sectional area of the pipeline gradually increases from the outlet point of the vortex chamber to the outlet pipe;

At the inlet of the impeller and the outlet of the bent inlet pipe, flow control means for screwing the front of the outlet of the bent inlet pipe to adjust the flow rate flowing from the inlet pipe to the impeller inlet is further provided. Engine direct type self-priming pump having a large suction power.
According to claim 1, wherein the pump housing is partitioned by a vertical bulkhead formed to the expansion pipe line based on the outer peripheral surface of the curved inlet pipe outlet,

One side of the impeller mounting portion is installed so that the impeller is installed to communicate with the expansion pipe to interrupt the flow rate of water discharged through the inlet through the outlet of the impeller to maintain a stable vacuum pressure inside the vortex chamber,

The other side of the engine direct-type self-contained pump pump having a large suction force, characterized in that the water storage unit for receiving the water flowing in the periphery is formed while receiving the curved inlet pipe.
According to claim 1, wherein the flow rate control means has a flow rate adjustment hole having a diameter corresponding to the inlet region of the impeller in the center and the assembly flange formed with a plurality of fastening holes formed outside the flow rate adjustment hole is formed Self-contained pump pump having a large suction force, characterized in that the screw inlet and the front of the inlet pipe passage.
According to any one of claims 1 to 3, wherein the curved inlet pipe is a sloped pipe portion for guiding the water flowing into the inlet pipe vertically downward, and vertically falling down the water flowing through the inclined pipe portion An engine-directed self-priming pump having a large suction force, characterized by comprising a tubular section and a horizontal tubular section for guiding the water passing through the vertical tubular section toward the impeller inlet arranged at a right angle.
The method of claim 2,

A connection passage communicating with the vortex chamber and the water storage unit is formed below the vertical bulkhead so that deposits accumulated on the vortex chamber bottom accumulate toward the water storage unit through the connection passage;

An external opening side of the pump housing is formed with an opening and closing hole for removing the deposit, the opening and closing cover is self-acting pump pump having a large suction capacity, characterized in that the opening and closing cover is further provided with a sealing process is screwed.
The method of claim 1,

The pump housing of the self-directed pump having a large suction capacity, characterized in that the inlet for supplying water into the vortex chamber and the water storage unit is further formed on one side of the pump housing.
The method of claim 1,

The assembly portion of the water supply pipe is further provided with a connection pipe 270 bent inclined in the middle in order to be assembled while maintaining a gentle inclined pipe suction direction,

The water outlet pipe assembly is an engine direct type self-priming pump having a large suction capacity, characterized in that the discharge pipe of the "b" shape is further provided to be connected to the transport pipe.
The method of claim 1,

The power transmission shaft is screwed to the movable plate of the engine;

A shaft support part supporting one side of an outer circumferential surface of the power transmission shaft;

A shaft support housing is provided between the engine and the pump housing;

A shock absorbing member is further provided below the support housing;

An engine direct connection type self-priming pump having a large suction force, characterized in that the impeller is installed at the end of the power transmission shaft is further provided with a mechanical seal between the power transmission shaft and the impeller.
The method of claim 8,

The mechanical seal is seated inside the shaft support, the shaft seal unit is sealed between the outer peripheral surface of the power transmission shaft and the shaft support;

An impeller seal unit sealed between the pump housing and an outer circumferential surface of the power transmission shaft and a spring elastically compressed and supported by the impeller seal unit,

The shaft seal unit includes a rotation shaft support ring installed on the outer circumferential surface of the power transmission shaft, and a first packing ring fitted on the outer circumferential surface of the rotation shaft support ring,

The impeller seal unit,

A spacer including a stopper installed on an outer circumferential surface of the power transmission shaft coupled to the impeller and a mounting flange extending from the stopper;

A second packing ring including a spacer ground flange grounded to an outer surface of the mounting flange, a ring seat extending from one side of the spacer ground flange, and a ring support flange radially protruding from the ring seat;

Mounted on the outer circumferential surface of the ring seating portion, the spring is fixed to the spring fixing ring and the body coupled to the outer surface and a spacer fixing projection for fixing one side of the mounting flange, and protruding to the other side and fixed to the spring It has a ring fixing protrusion for pressing one side of the outer peripheral surface of the ring, when assembling a large capacity suction force, characterized in that it comprises a seal cover for mounting the outer peripheral surface of the mounting flange of the spacer and the outer peripheral surface of the spacer ground flange inside the body Self-contained pump for self-contained pump.
According to claim 1, The impeller is formed in a circular shape, the plate member having a coupling portion coupled to the power transmission shaft in the center;

Includes a protrusion formed on the upper surface of the plate and arranged in a plurality of radially around the coupling portion,

The feather is formed to be curved in an arc shape, the self-directed pump pump having a large capacity suction force, characterized in that the inclined portion is formed on one side.
The method of claim 10,

The number of the feather is an engine direct-type self-priming pump having a large suction capacity, characterized in that formed in an odd number.
The method of claim 10,

The number of the feather is an engine-directed self-priming pump pump having a large suction force, characterized in that formed in 7 ~ 9.
The method of claim 10,

The inlet angle of the feather is 24 ~ 25 °, the outlet angle is an engine direct type self-priming pump having a large suction force, characterized in that 22 ~ 23 °.
The method of claim 10,

The thickness of the feather is the inlet portion close to the coupling portion, the engine direct-attached self-priming pump having a large suction force, characterized in that the thickness of the outlet portion close to the outer periphery of the plate is formed equal.
The method of claim 10,

The inlet and outlet portion of the engine direct self-priming pump pump having a large suction capacity, characterized in that 14 ~ 18mm thickness.
The method of claim 10,

The thickness of the feather is formed in the inlet and the outlet is different, in the case of cast iron inlet portion 3.5 ~ 7mm, outlet portion 4 ~ 10mm engine direct type self-priming pump having a large suction force, characterized in that.
The method of claim 10,

The outlet width of the feather is 0.074 ~ 0.076 mm engine direct type self-priming pump having a large suction capacity.
The method of claim 10,

The inclined portion of the feather is an engine direct type self-priming pump having a large suction force, characterized in that formed on the inlet side.
The method of claim 10,

The coupling portion is formed in a cylindrical shape having a hollow so that the power transmission shaft is fitted, the direct coupling type self-priming pump pump having a large suction force, characterized in that the key coupling groove is formed on the inner circumferential surface.