KR100952664B1 - Automatic discharge connector for underwater pump - Google Patents

Abstract

PURPOSE: An automatic discharge connector for an underwater pump with a leakage prevention structure is provided to completely block a leakage at the joint between a discharge elbow and a pump. CONSTITUTION: An automatic discharge connector for an underwater pump comprises a discharge elbow(110), a guide bar(120), and a slide bracket(130). The discharge elbow is made of an L-shaped pipe to guide fluid discharged from a water pump(1) to the outside and includes a coupling part(111), a reaction prevention clamp(112), a flange(113) for coupling with a pipeline, and a supporter(114) for maintaining a specific height from the bottom of a pump station structure.

Description

Automatic discharge connector for underwater pump with leakproof structure

The present invention relates to an automatic desorption apparatus for submersible pumps that facilitates the assembly and disassembly of submersible pumps and discharge elbows in water. It relates to an automatic desorption apparatus for an underwater pump having a leakproof structure that can be maintained.

A sewage treatment plant or a drainage pumping station uses a submersible pump as a means for transferring fluids. The submersible pump is divided into various types, such as a core, pressurized water, and drainage, depending on the purpose and purpose of use.

Normally, the submersible pump uses an elbow piping method. However, when the elbow is used, it is difficult to maintain because it must be lifted after removing all the fluid in the pumping station to lift the pump when a pump failure occurs.

To this end, a method of installing and dismantling a pump in water has recently been commercialized by using a discharge elbow having an automatic discharge connector for various reasons, such as maintenance convenience of a pump and a demand of a company. When using such an automatic detachment device, because the pump can be lifted separately from the elbow for discharging without the need to remove water, there is an advantage that the pump can be effectively maintained and managed.

Korean Utility Model Registration No. 163069 discloses a configuration capable of accurately connecting or dismantling a pump to an elbow for discharging in water using a guide frame and a guide bracket under the title of "Automatic removal device for submersible pumps." The utility model registration No. 163069 is fixed to the pair of guide frames and the pump outlet side flange face upright disposed on the side of the elbow as a bolt and the pump fastening position in the water while descending along the guide frame by the pump itself weight when the pump is fastened Characterized in that consists of a guide bracket for guiding the.

However, according to the prior art, when the total head of the pump is high, there is a problem that a gap occurs in the lower part of the pump and the elbow joint for discharge due to the lift by the reaction force of the discharge pressure of the pump. Accordingly, about 20-30% of the pump discharge amount is leaked through the gap, causing a fatal problem in which the pump lift efficiency is significantly lowered.

In addition, in the prior art, the pump may be detached from the elbow due to the lifting phenomenon of the pump due to the reaction force, and the pump may be burned out. Therefore, when the head is high, there was no choice but to use the above-described elbow piping method without using an automatic removal device. As a result, in the case of high lift, there is an operational limit to bear the above-mentioned pump maintenance problem.

Furthermore, in the conventional automatic detachment apparatus, general rubber packing is applied to maintain only airtightness between the pump and the automatic detachment apparatus. However, due to the characteristics of the automatic desorption device, when the lower part of the pump is slightly lifted up during operation, the rubber can not effectively prevent leakage due to the problem of not being able to exhibit the sealing performance. In other words, the normal rubber packing is not compensated for the gap at all, the effective prevention against leakage that increases in proportion to the pump discharge pressure is urgently needed.

In view of the above problems, the present applicant has developed and applied for an automatic desorption apparatus for a high head submersible pump, and the automatic desorption apparatus for a high head submersible pump is disclosed in Korean Patent No. 0728865.

1 is a block diagram showing the overall configuration of the automatic desorption apparatus for a high head submersible pump.

The automatic lifting device for a high head submersible pump includes a discharge elbow (2) having a fastening portion (22) and an annular reaction force preventing clamp (26), and guide bars extending vertically from both sides of the discharge elbow. (3), the guide hook (4) is assembled to the engaging portion of the discharge elbow while moving in conjunction with the guide bar, and the fastening protrusion (50) coupled to the guide hook and bound to the reaction force preventing clamp is provided at the lower end And a slide bracket 5 mounted on the pump 1 and a seal 6 elastically supported by a spring 60 on one side of the slide bracket to maintain an airtight state.

The automatic desorption apparatus for a high lift submersible pump configured as described above prevents the reaction force clamp 26 and the fastening protrusion 50 from being lifted by the reaction force of the pump, even if a slight lift occurs. The seal 6 elastically supported by 60 has a structure capable of preventing an effective leak by compensating for this.

However, the above automatic detachment device has the following problems.

First, production is not easy, and production costs are high.

In the case of the automatic desorption apparatus, a plurality of springs 60 are used to elastically support the seal 6 of the circular ring structure as a whole, and the detachment of the seal 6 elastically supported by the spring 60. In order to prevent the metal stopper 62 is fixed to the slide bracket with a bolt.

As described above, the automatic detachable device has a problem in that the manufacturing cost is high due to the increase in materials required because the assembly structure is complicated, because a plurality of springs and stoppers are used to assist the seal.

Second, airtightness deteriorates when used for a long time due to the corrosion of the spring.

Since the seal for airtight between the discharge elbow and the pump is supported by a plurality of springs as described above, the airtightness depends on the elastic force of the spring. However, since the spring is always exposed to the fluid discharged from the pump is in contact with the fluid is easily corroded, this corrosion has a problem of reducing the air tightness by reducing the elastic force of the spring.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an automatic desorption apparatus for an underwater pump having a leak-proof structure that can be easily manufactured by a simpler structure, lowering the manufacturing cost and improving competitiveness. Is in.

Still another object of the present invention is to provide an automatic desorption apparatus for an underwater pump having a leak-proof structure that can completely block leakage of the coupling part of the elbow for discharge and the pump even at a high pressure.

Still another object of the present invention is to remove and remove the interference parts of the elbow for discharging pumps and automatic removal of the underwater pump having a leak-proof structure to perform the assembly and disassembly of the submersible pump more smoothly In providing.

Underwater pump automatic desorption apparatus having a leak-proof structure of the present invention that achieves the object as described above and to perform the problem to eliminate the conventional defects is fastened with a ring-shaped reaction force prevention clamp on one side as a pipe in which fluid flows A discharge elbow having a portion, a pair of guide bars vertically erected to extend to the surface from both sides of the discharge elbow, and a fastening protrusion inserted into the reaction force preventing clamp and engaged with the slide and mounted on the discharge side of the submersible pump. An automatic detachment apparatus for a submersible pump comprising a bracket and a guide hook coupled to the slide bracket and guiding the submersible pump toward an elbow for discharging while moving along a guide bar, and fastened to a fastening part of the elbow for discharging. A fixing part mounted on an inner surface of the slide bracket from the fixing part. Extended to the side and deformed to be straightened by the pressure of the fluid when discharging the fluid by the submersible pump to cover the connection portion of the elbow for discharging and the slide bracket, and deformed to recede inside the slide bracket when the discharging of the fluid is stopped. It characterized in that it further comprises a flap seal made of a deformation.

On the other hand, the deformable portion is a semicircular rounded shape, the inner surface of the concave shape is formed so as to face the discharge direction of the fluid. At this time, the outer surface of the deformable portion is protruded convexly when unfolded by the pressure of the fluid, the projection is in close contact with the connection portion of the elbow for discharging and the slide bracket is further formed.

On the other hand, the deformation portion is configured to decrease in thickness toward the end.

On the other hand, the inner surface of the slide bracket is formed with a groove into which the fixing portion is inserted so that the flap seal is mounted on the slide bracket.

According to the present invention having the characteristics as described above, by configuring the automatic desorption device using a single-piece flap seal consisting of a fixed part and a deformation part, the structure is simple, easy to manufacture, can lower the production cost can improve the competitiveness Of course, it is possible to completely prevent the leakage occurs at the connection of the discharge elbow and the pump.

In addition, the flap seal of the present invention is expanded only when the fluid is discharged by the operation of the submersible pump, the assembly and disassembly operation of the submersible pump is maintained when the submersible pump is assembled and dismantled into the slide bracket. It can be done more easily.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view showing a state before being assembled with the submersible pump as a submersible pump automatic desorption apparatus according to a preferred embodiment of the present invention, Figure 3 is a submersible pump automatic desorption apparatus according to a preferred embodiment of the present invention assembled with a submersible pump 4 is a detailed view of portion 'A' of FIG. 3.

Underwater pump (1) automatic desorption apparatus of the present invention by using a flap seal 150 that is deformed according to the pressure of the fluid discharged from the submerged pump (1) airtightness between the elbow for discharge 110 and the submersible pump (1) The elbow 110 for discharge, the guide bar 120, the slide bracket 130, the guide hook 140, and the flap seal 150 are comprised.

The discharge elbow 110 is an L-shaped pipe that guides the fluid discharged from the submersible pump 1 to the outside, and includes a fastening part 111 and a slide bracket 130 for binding with the submersible pump 1. Reaction force prevention clamp 112 for binding of the provided on one side, the other side is provided with a flange 113 for coupling with the pipe not shown, the lower end is provided with a support 114 is provided on the bottom of the pump station structure Spaced apart from the height.

The guide bar 120 is provided with a pair, the provided pair of guide bar 120 is formed to extend in the vertical direction from the support to the water surface on both sides of the discharge elbow 110.

The slide bracket 130 is fixed to the discharge side of the submersible pump 1, the discharge hole 131 corresponding to the discharge port of the submersible pump 1 is formed in the center portion of the fluid discharged from the submersible pump 1 It is configured to flow without clogging, and the lower end is composed of a fastening protrusion 132 is inserted into the reaction force preventing clamp 112 is formed. The slide bracket 130 is in close contact with the discharge elbow 110 when the discharge elbow 110 and the submersible pump 1 is coupled to maintain the airtight state.

The guide hook 140 is coupled to the upper end of the slide bracket 130 is installed to move with the slide bracket 130, that is, the submersible pump (1), the guide ring 141 is coupled to the guide bar 120 Is provided on both sides, the lower end of the guide ring 141 is formed with a protrusion 142 for binding with the fastening portion 111.

On the other hand, the discharge elbow 110 is installed on the bottom of the pump station where the fluid to be discharged is stored, wherein the pair of guide bars 120 extend in the vertical direction from both sides of the discharge elbow 110 toward the water surface. In addition, the slide bracket 130 coupled with the guide hook 140 is mounted on the discharge side of the submersible pump (1). According to such a configuration, when the guide hook 140 is coupled to the pair of guide bars 120 using the guide ring 141, the submersible pump 1 is pulled toward the discharge elbow 110 installed in the water. The submersible pump 1 moves downward along the guide bar 120 to approach the elbow 110 for discharging, and the fastening part 111 is inserted into a space formed by the protrusion 142 of the guide hook 140. In addition, the fastening protrusion 132 of the slide bracket 130 is inserted into the reaction force preventing clamp 112, so that the discharge elbow 110 and the submersible pump 1 are combined. The coupling structure of the discharge elbow 110 and the submersible pump 1 is disclosed in Korean Patent No. 0728865.

However, in the case of the slide bracket 130, the groove 133 for mounting the flap seal 150 is further formed on the inner surface. The groove 133 is continuous along the inner surface of the discharge hole 131 formed in the slide bracket 130 is formed in a circular structure.

Figure 5 shows a cross-sectional view of the flap seal according to the present invention.

The flap seal 150 is a ring-structured member made of an elastic body, and includes a fixing part 151 inserted into and fixed to the groove 133 of the slide bracket 130, and a slide bracket 130 from the fixing part 151. Consists of a deformable portion 152 extending into the inside, the fixed portion 151 and the deformable portion 152 is an integral structure, the flap seal 150 is made of a single body.

The fixing part 151 has a cross-sectional structure corresponding to the groove 133 and is formed to protrude from the outer surface of the flap seal 150.

The deformable portion 152 expands or retracts according to the pressure discharged from the submersible pump 1 and covers the connection portion of the discharge elbow 110 and the slide bracket 130 only when the fluid is discharged to leak the fluid. Is to prevent the interference caused by the flap seal 150 when disassembly and assembly of the submersible pump (1).

More specifically, the deformable portion 152 is formed in a semi-circular rounded shape, the inner surface 152a having a concave recessed shape is formed to face the discharge direction of the fluid. According to this structure, the deformable portion 152 is naturally unfolded while the pressure of the fluid acts on the concave recessed inner surface 152a when the fluid is discharged, and the unfolded deformable portion 152 is discharge elbow 110 and Cover the connection portion of the slide bracket 130 to prevent the leakage of the fluid.

On the contrary, when the discharge of the fluid is stopped, the deformable portion 152 is retracted by its elasticity.

As described above, the deformable portion 152 has a structure in which the thickness decreases toward the end portion 152c so that the deformable portion 152 may be properly deformed according to a situation and maintain elasticity even when used for a long time.

In addition, a protrusion 153 is further formed on the outer surface 152b of the deformable portion 152 to improve airtightness between the discharge elbow 110 and the slide bracket 130. In this case, the protrusion 153 is formed to be located at a connection portion of the discharge elbow 110 and the slide bracket 130 when the deformation part 152 is unfolded by the pressure of the fluid, and thus the deformation part 152 by the pressure of the fluid. The pressure of the elbow 110 for discharging elbow 110 and the slide bracket 130 is prevented by preventing the leakage of the fluid more stably.

The assembly and disassembly process of the submersible pump using the automatic desorption apparatus of the present invention configured as described above is the same as in the prior art.

That is, the discharge elbow 110 is installed to be fixed to the bottom of the pump station, wherein the pair of guide bars 120 extend in the vertical direction from the support 114 to form a structure protruding into the water surface.

In addition, the slide bracket 130 in which the guide hook 140 is integrated by bolts or welding is mounted to the discharge port side of the submersible pump 1 by a plurality of bolts.

In order to assemble the submersible pump 1 and the discharge elbow 110 in the above state, the submersible pump (141) provided with the guide ring 141 provided in the guide hook 140 to the guide bar 120 ( When 1) is gradually lowered, the submersible pump 1 is naturally guided to the discharge elbow 110 side, and when the submersible pump 1 reaches the desired position, the fastening portion of the discharge elbow 110 ( 111 and the protrusion 142 of the guide hook 140, and the fastening protrusion 132 of the slide bracket 130 is bound to the reaction force preventing clamp 112, the discharge elbow 110 and the submersible pump (1) Assembly is completed.

Since the submersible pump 1 operates to discharge the fluid, the submersible pump 1 is not lifted because the upper and lower parts are fastened to the discharge elbow 110 through the slide bracket 130.

In addition, the deformation portion 152 of the flap seal 150 located inside the slide bracket 130 when the fluid is discharged straight to cover the connection portion of the elbow 110 and the slide bracket 130 for discharging straight, Even if some lifting occurs, leakage of the fluid can be prevented. When the pressure of the fluid is high, such as a high lift pump, the deformable portion 152 is closely adhered to the connection part by the pressure of the fluid. As a result, even in high lift pumps, fluid leakage can be prevented reliably.

Meanwhile, when the discharge elbow 110 and the submersible pump 1 are to be separated for the inspection or replacement of the submersible pump 1, the deformable portion 152 of the flap seal 150 is restored to its original state by its elasticity. The submersible pump 1 can be separated from the elbow 110 for discharge without any interference.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a configuration diagram showing the overall configuration of the automatic desorption apparatus for high head submersible pump,

Figure 2 is a cross-sectional view showing a state before assembling the submersible pump as a submersible pump automatic detachment apparatus according to a preferred embodiment of the present invention,

3 is a cross-sectional view showing a state in which the underwater pump automatic desorption apparatus according to a preferred embodiment of the present invention is assembled with the underwater pump,

4 is a detailed view of portion 'A' of FIG. 3;

5 is a cross-sectional view of the flap seal according to the present invention.

<Explanation of symbols for the main parts of the drawings>

(1): submersible pump 110: discharge elbow

111: fastening part 112: reaction force prevention clamp

120: guide bar 130: slide bracket

132: fastening protrusion 133: groove

140: guide hook 150: flap seal

151: fixing part 152: deforming part

(152a): inner side (152b): outer side

152c: end 153: projection

Claims (5)

As a pipe through which fluid flows, the discharge elbow 110 includes a ring-shaped reaction force preventing clamp 112 and a fastening part 111 at one side thereof, and is vertically extended from both sides of the discharge elbow 110 to the water surface. A slide bracket (130) mounted on the discharge side of the submersible pump (1) and having a guide bar (120) inserted therein, a fastening protrusion (132) inserted into and coupled to the reaction force preventing clamp (112); Guide hook 140 is coupled to the bracket 130 and guides the submersible pump 1 toward the discharge elbow 110 while moving along the guide bar 120 and is coupled to the fastening portion 111 of the discharge elbow 110. In the automatic removal device for submersible pumps comprising: Fixed portion 151 mounted on the inner surface of the slide bracket 130, and extending from the fixing portion 151 to the inside of the slide bracket 130, a semi-circular rounded shape, concave recessed shape The inner surface 152a is formed to face the discharge direction of the fluid so that the inner surface 152a is straightened by the pressure of the fluid when discharging the fluid by the submersible pump 1 to cover the connection between the discharge elbow 110 and the slide bracket 130. Deformed, and when the discharge of the fluid is stopped, the submersible pump having a leak-proof structure further comprises a flap seal 150 made of a deformable portion 152 deformed to retract inwardly of the slide bracket 130 Automatic removal device for delete The method of claim 1, The deformable portion 152 is an automatic detachment device for an underwater pump having a leak-proof structure, characterized in that the thickness decreases toward the end portion (152c). The method of claim 1, The outer surface 152b of the deformable portion 152 is further formed to protrude convexly and is unfolded by the pressure of the fluid, the projection 153 is in close contact with the connection portion of the discharge elbow 110 and the slide bracket 130 is further formed. Automatic detachment device for submersible pump having a leak-proof structure, characterized in that. The method of claim 1, An inner surface of the slide bracket 130 is formed with a groove 133 into which the fixing part 151 is inserted so that the flap seal 150 is mounted on the slide bracket 130. Desorption device.

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