KR102302130B1 - Pipe-line connecting device for installation of a pump - Google Patents

Abstract

The present invention relates to a pipe connector for pump installation, which is provided with a connecting tube for connecting an inlet port and an outlet port of an impeller casing for a pump to an inlet pipe and an outlet pipe, respectively, on one side of a flange body assembled with a connecting flange provided on each of the inlet port and the outlet port of the impeller casing. In detail, a ring-shaped central protrusion is formed along an edge of a flow hole for fluid on a central portion of the other side of the flange body, and a ring-shaped outer protrusion is formed along an edge of an assembly hole for assembling with the connecting flange on an outer portion of the other side of the flange body. As a result, when the pipe connector is assembled with the connecting flange of the impeller casing by means of an assembly bolt, with a waterproof pad of a predetermined thickness interposed between the flange body of the pipe connector and the connecting flange of the impeller casing, the elastic restoring force of the waterproof pad is prevented from acting on the other side of the flange body except for the outer protrusion for installing the assembly bolt and the central protrusion for surrounding the flow hole for fluid. In addition, the central protrusion itself comes to act as a reinforcing structure for suppressing deformation. Through these improvements, even if the pipe connector is made of plastic material rather than metal material, the central portion of the flange body of the pipe connector is not bent to the inlet pipe or the outlet pipe by the elastic restoring force of the waterproof pad.

Description

Pipe-line connecting device for installation of a pump}

The present invention relates to a pipe connector for installation of a pump, which is used to connect an inlet pipe and a discharge pipe of a fluid on a connecting flange respectively provided on an end side of an inlet port and an outlet port of an impeller casing connected to a driving motor for a pump, respectively.

In general, the pump mechanism is used to transfer fluids such as water or oil using the power of the driving motor, and the impeller casing 3 is connected to the upper side of the driving motor 2 as shown in FIG. and an impeller rotating in connection with the drive shaft of the driving motor 2 is inserted and installed in the impeller casing 3, and fluid is introduced into the left and right sides of the impeller casing 3 according to the rotational operation of the impeller An inlet port 4 and an outlet port 5 through which the fluid is discharged through the impeller are provided, respectively.

When connecting the inlet pipe 7 and the outlet pipe 8 of the fluid on the inlet port 4 and the outlet port 5 provided in the impeller casing 3 for the pump 1 as described above, respectively, the driving motor 2 ), the fluid stored in a specific place can be transferred to another place that requires it according to the rotational operation of the impeller by (7) and a connection flange (6) for connecting the discharge pipe (8) is provided, and the inlet pipe (7) and the discharge pipe (8) with the connecting flange (6) interposed with the pipe connector (10) Each is connected and installed.

As described above, a conventional pipe connector 10 for connecting the inlet port 4 and the outlet port 5 of the impeller casing 3 for the pump 1 to the inlet pipe 7 and the outlet pipe 8 of the fluid, respectively. 1 and 2, the inlet port 4 and the end side connection flange 6 of the outlet port 5, and a flange body 11 assembled and installed, and the flange body It is formed to protrude on one side (left side in FIG. 2) of (11) and is made to include a connecting tube (12) connected to the inlet pipe (7) or the outlet pipe (8), and the flange body (11) ) is formed in the central part and the outer part of the fluid flow hole (11a) and the assembly hole (11b) of the connecting flange (6), respectively.

Therefore, a waterproof pad 9 of a predetermined thickness is interposed between the flange body 11 of the pipe connector 10 and the connection flange 6 of the impeller casing 3, the central portion and the outer edge of the waterproof pad 9 In the state in which the flow hole 9a and the assembly hole 9b corresponding to the flange body 11 of the pipe connector 10 are respectively formed in the part, the flange body 11, the waterproof pad 9, and the connection flange 6 ) of the assembly bolt 20 protruding through the assembly hole 6a of the connecting flange 6 in a state where the assembly bolt 20 is penetrated along the assembly hole 11b, 9b, 6a formed in the end side of the assembly bolt 20 The piping connector 10 is first assembled with the impeller casing 3 in such a way that the fitting nut 21 is fastened to the .

In the state as described above, the fastening part 8a provided on the outer peripheral surface of the end side of the inlet pipe 7 or the outlet pipe 8 is screwed along the fastening part 12a provided on the inner circumferential surface of the connecting tube 12 of the pipe connector 10. By assembling in this way, the installation work of the piping line for the pump 1 that connects the inlet pipe 7 and the outlet pipe 8 of the fluid to the inlet port 4 and the outlet port 5 of the impeller casing 3, respectively. The end side of the inlet pipe 7 or the outlet pipe 8 is provided on the inner circumferential surface of the flow hole 11a of the flange body 11 in close contact with the sealing ring 8b interposed therebetween.

However, the conventional pump (1) installation pipe connector 10 as described above uses the same metal material as the impeller casing 3, and its appearance is first formed by casting or machining of the material, and then the pipe connector ( An assembly hole 11b for assembling the 10) with the connecting flange 6 of the impeller casing 3 is formed on the outer side of the flange body 11 by boring processing, while the inlet pipe 7 and the outlet pipe As it is manufactured through a cumbersome and difficult process of forming the threaded fastening part 12a for the connection of (8) by tap processing along the inner circumferential surface of the connecting tube 12, the pipe connector that becomes a part for the pump (1) (10), there was a problem that mass production and cost reduction were difficult.

In particular, when the manufacturer of the pump (1) sells the pump (1) product, the pipe connector 10 must be provided together with the pump (1) product so that the purchaser can directly install and use the product on site. Although it is an essential item, only the two pipe connectors 10 necessary for basic installation of the pump (1) product are required due to the characteristics of the pipe connector 10 manufactured through complicated and cumbersome machining several times and the manufacturing cost thereof. ) provided with the product, it was to cause uneconomical and unreasonable problems for both the buyer and the manufacturer of the pump (1) product.

In other words, from the buyer's point of view, if the pipe connector 10 is damaged in the process of transporting and handling the pump (1) product, it is necessary to contact the manufacturer directly and request an additional pipe connector 10, as well as to request the pump (1). ) The piping connection work for installing the product on site also has to be limitedly performed in accordance with the connecting tube 12 structure of the piping connection port 10 accompanying the product, and from the manufacturer's point of view, an extra piping connection port (10) Alternatively, as it is not possible to provide a set of various types of piping connection tools (10) capable of various types of piping connection work to buyers at low prices, a decrease in operating profit due to sluggish sales performance and a decrease in external competitiveness of the product that it goes on

In addition, as the life of the pump (1) product is used for a long period of time or the pump (1) itself has a defect, loosen the assembly bolt (20) and the fitting nut (21) to release the inlet pipe (7) and the outlet pipe When (8) is to be separated from the pump (1), not only is it very difficult to disassemble the assembly bolt 20 and the fitting nut 21, but also the pipe connector ( The end side of the inlet pipe 7 and the outlet pipe 8 screwed together with the connecting tube 12 of 10) also had a problem in that it was very difficult to disassemble due to corrosion between the metal members. If the assembly part is corroded to a level where disassembly using tools is impossible, use a hacksaw to cut the assembly bolt 20, the inlet pipe 7, or the discharge pipe 8, so that the pump (1) can be replaced. There was a problem that caused considerable trouble.

Due to the above factors, in recent years, the inlet pipe 7 and the outlet pipe 8 used together with the structurally strong metal pump (1) product are made of plastic materials such as PVC, and the The pipe connector 10 connecting the inlet pipe 7 and the outlet pipe 8 with the impeller casing 3 for the pump 1 is also made of a plastic material, while the nut on the connecting tube 12 of the pipe connector 10 When various assembly structures such as a socket-type socket or a fitting-type pipe are applied, the connection work of the inlet pipe 7 and the outlet pipe 8 can be performed very quickly and easily, as well as the replacement work of the pump 1 It can be easily performed through the process of separating the inlet pipe 7 and the outlet pipe 8 itself without loosening the assembling bolt 20 and the fitting nut 21 even during the process.

As described above, if the pipe connector 10 for installing the existing pump 1 made of a metal material is made of a plastic material, the pipe line connection work and the pump 1 replacement work can be performed more easily and at the same time , while providing the advantage of being able to mass-produce various pipe connectors 10 having various types of connecting tubes 12 by injection molding, the flange body 11 of the pipe connector 10 and the impeller casing ( 3) A waterproof pad 9 of a predetermined thickness is interposed between the connection flanges 6 of 3), and then the pipe connector 10 is firmly attached to the impeller casing 3 by the assembly bolt 20 and the fitting nut 21. When the pump (1) product is used for a certain period of time in a state in which it is properly connected, the central side of the flange body (11) of the pipe connector (10) made of plastic material is a waterproof pad (9), as indicated by the dotted line in FIG. 3 . The problem of bending toward the inlet pipe 7 or the outlet pipe 8 occurs due to the elastic restoring force of the.

More specifically, the waterproof pad 9, which is an elastic material, is interposed between the flange body 11 of the pipe connector 10 and the connection flange 6 of the impeller casing 3, and then the flange body ( 11), the waterproof pad 9 and the connecting flange 6 are tightly assembled with the assembly bolt 20 and the fitting nut 21. The elastic restoring force that pushes the surface of the flange body 11 and the connection flange 6 excluding the flow hole 11a and the assembly hole 11b and 6a on the waterproof pad 9 is applied to the waterproof pad 9, and is made of a metal material. The connecting flange 6 of the manufactured impeller casing 3 can sufficiently withstand the elastic restoring force of the waterproof pad 9, but the flange body 11 of the pipe connector 10 made of a plastic material is in the direction of the arrow in FIG. It does not overcome the elastic restoring force of the waterproof pad 9 acting as

In particular, from the outer side of the flange body 11, where the fastening force between the assembly bolt 20 and the fitting nut 21 is maintained strongly, toward the center of the flange body 11 where the fastening force is hardly reached, the amount of deformation gradually increases. The central portion of the body 11 is bent the most, and in the case of the rhombus flange body 11 in which one assembly bolt 20 is installed at both ends as shown in FIG. 1, this deformation appears more conspicuously as well as Rather, the normal operation of the pump 1 is performed during the initial period of use immediately after the pipe connection work is completed, but after a certain period of time has elapsed, the fluid leakage through the deformed part suddenly occurs to a serious level, so It will have a fatal adverse effect on safety due to its use.

Due to the above factors, despite the fact that the pipe connector 10 for installing the pump 1 made of a metal material has various unreasonable disadvantages, it has not been possible to properly replace the corresponding part with a plastic material so far, and accordingly The development of an improved product that can replace the metal pipe connector 10 with a plastic material and solve the problems caused by the plastic pipe connector 10 described above at once is continuously required.

The present invention has been devised to meet the above requirements, and along the edges of the fluid flow hole and assembly hole in the central and outer portions of the surface of the flange body facing the connection flange of the impeller casing, a ring-shaped central protrusion and When assembling the pipe connector with the connecting flange of the impeller casing by means of an assembly bolt and fitting nut, with a waterproof pad of a predetermined thickness interposed between the flange body of the pipe connector and the connecting flange of the impeller casing by forming the outer protrusion, fluid Prevents the elastic restoring force of the waterproof pad from acting on the remaining surface of the flange body except for the central protrusion surrounding the flow hole of Through this, even if the pipe connector is made of a plastic material rather than a metal material, the main technical task is to prevent the central part of the flange body of the pipe connector from being bent toward the inlet pipe or the outlet pipe by the elastic restoring force of the waterproof pad. .

In addition, the present invention makes the protrusion thickness of the outer protrusion slightly thicker than the central protrusion to lower the elastic restoring force of the waterproof pad applied to the central protrusion to an appropriate level within a range that does not reduce the sealing performance of the flow hole. By concavely forming a mounting groove in which the sealing ring can be mounted along the central side of the ring-shaped flat part forming the end surface of the central protrusion, the pipe connector is connected to the impeller casing to prevent deformation of the It enables quicker and easier assembly of the connection flange and watertightness, and provides a packing means that can be manufactured with much less material compared to waterproof pads while ensuring sufficient sealing performance. On the other hand, it is another technical task to diversify the types of packing means that can be applied to the connection work between the pipe connector and the impeller casing into waterproof pads and sealing rings.

The present invention as a means for solving the above technical problem, a flange body assembled and installed facing each connection flange provided on the inlet port and the outlet port end side of the impeller casing for a pump, and a protrusion formed on one side of the flange body and a connecting tube for connecting the inlet pipe and the outlet pipe to the inlet port and the outlet port of the impeller casing, respectively, and an assembly hole between the fluid flow hole and the connecting flange is formed in the central part and the outer part of the flange body, respectively. In the piping connector, a ring-shaped central protrusion is formed along the edge of the flow hole in the central portion of the other side of the flange body, and a ring-shaped outer protrusion is formed in the outer portion of the other side of the flange body along the edge of the assembly hole. And, the pipe connector comprising the flange body and the connecting tube including the central protrusion and the outer protrusion is characterized in that it is manufactured by an injection molding method using a plastic material.

More preferably, the thickness of the central protrusion protruding from the surface of the flange body is in the range of 0.5 to 2 mm, and the thickness of the outer protrusion protruding from the surface of the flange body is in the range of 1 to 3 mm, characterized in that and an end face of the central protrusion becomes a ring-shaped flat portion having a predetermined width, and a sealing ring mounting groove is concave along the center portion of the flat portion, and the connecting tube is the tube body. It is characterized in that the screw-type fastening part is formed on the outer circumferential or inner circumferential surface of the or the tube body itself is an assembly part that is fitted with the outer circumferential or inner circumferential surface of the inlet pipe or the outlet pipe.

According to the present invention as described above, when the pipe connector is firmly assembled with the impeller casing by using an assembly bolt and a fitting nut with a waterproof pad interposed between the flange body of the pipe connector and the connecting flange of the impeller casing, the fluid By preventing the elastic restoring force of the waterproof pad from acting on the remaining surface of the flange body except for the central protrusion surrounding the flow hole and the outer protrusion for installation of the assembly bolt, the central protrusion itself is a reinforcing structure for suppressing deformation, Even if the pipe connector is made of a plastic material, the central part of the flange body is bent toward the inlet pipe or the outlet pipe and provides the effect of not being deformed.

Through this, from the point of view of the pump product manufacturer, it is possible to achieve easy mass production of various types of pipe connectors by injection molding of plastic materials and cost reduction at the same time. of pipe connector set can be freely provided to the buyer at a low price, and the weight of the pump mechanism including the pipe connector can be reduced. It can lead to strengthening the external competitiveness of pump products.

On the other hand, from the point of view of the purchaser of the pump product, even if the pipe connection is damaged in the process of transporting and handling the product, the pump can be installed without delay using the spare pipe connection, and is made of plastic material with no risk of corrosion. While providing the convenience of being able to perform replacement of the pump very easily by using the pipe connector, various types of pipe connector shipped with the pump product, for example, a connecting tube or fitting prefabricated connecting part with a fastening part on the outer or inner circumferential surface By selecting a pipe connector with a connecting tube that is most suitable for the installation of the pump from among the tubes, various assembly methods such as nut cap joint method, socket assembly method, fitting type or adhesive type can be used regardless of the material (metal or plastic) of the pipe line. As it can be applied without the need, the variety of piping connection work can also be provided.

In addition, by making the protrusion thickness of the outer protrusion slightly thicker than the central protrusion and lowering the elastic restoring force of the waterproof pad applied to the central protrusion to an appropriate level, it is possible to more reliably prevent deformation of the flange body. , As the pipe connector can be immediately assembled with the impeller casing with the sealing ring inserted into the mounting groove of the central protrusion, a waterproof pad is placed between the flange body and the connecting flange, and then each assembly hole is matched. Compared with the method, it provides the effect of performing the assembly operation more quickly and easily.

In particular, according to the application of the sealing ring, it is possible to manufacture with much less material compared to the waterproof pad, and the sealing performance can be provided at the same level as the waterproof pad. Even when the ring mounting groove is formed, an excellent watertight structure is implemented in which the surface of the waterproof pad is convexly pressed into the mounting groove when assembling the pipe connector using the waterproof pad and the impeller casing. The effect of diversifying the type of packing means into a waterproof pad and a sealing ring is additionally provided.

1 is a partial exploded perspective view showing a connection state of a piping line for a pump using a conventional piping connector.
Figure 2 is a side cross-sectional view of the main part of Figure 1;
Figure 3 is a schematic view showing a stress state acting on the pipe connection portion of Figure 2;
Figure 4 is a rear perspective view showing a pipe connector for installing a pump according to an embodiment of the present invention.
Fig. 5 is a side view of Fig. 4;
Fig. 6 is a rear view of Fig. 4;
Fig. 7 is a side cross-sectional view of Fig. 4;
8 is a partial exploded perspective view showing a connection state of a piping line for a pump using the piping connector of FIG. 4;
9 is a side cross-sectional view of the main part of FIG. 8;
10 (A) and (B) are side views of the main part of FIG. 9 showing the state before and after compression of the waterproof pad.
11 is a rear perspective view showing a pipe connector for installing a pump according to another embodiment of the present invention.
Fig. 12 is a rear view of Fig. 11;
13 is a partial exploded perspective view showing a connection state of a piping line for a pump using the piping connector of FIG. 11;
Fig. 14 is a side cross-sectional view of the main part of Fig. 13;
15 to 17 are side cross-sectional views showing the type of connecting tube applicable to the piping connector of the present invention and the connection state of the piping line.

Hereinafter, the present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 4 to 7, the pump (1) installation piping connector 10 according to an embodiment of the present invention is an inlet port 4 and an outlet port of the impeller casing 3 for the pump 1 (5) a flange body 11 that is assembled and installed facing the connection flange 6 provided on the end side, and an impeller casing 3 protruding from one side (left side in the drawing) of the flange body 11 Consists of a connecting tube 12 for connecting the inlet pipe 7 and the outlet pipe 8 to the inlet port 4 and the outlet port 5 of the it will be done

In addition, in the central portion of the flange body 11, a flow hole 11a is formed in a dimension corresponding to the inlet or outlet of the fluid provided in the connection flange 6 of the impeller casing 3, and the flange body 11 An assembly hole 11b is formed in the outer part of the assembly bolt 20 and the connecting flange 6 using the fitting nut 21, and the connecting tube 12 has an inlet pipe 7 or an outlet pipe 8. A screw-type fastening part 12a for the connection of This supported locking jaw 17 is provided.

In the drawings, the flange body 11 of the pipe connector 10 according to the present invention is shown to have a rhombus shape, but the external shape of the flange body 11 is a pump using the pipe connector 10 of the present invention ( Various adjustments are possible according to the shape and size of the connection flange 6 provided in the impeller casing 3 of 1), and the connection structure of the piping line provided in the connecting tube 12 is also various other than the fastening part 12a. Since the connection structure can be applied, the type of the connection structure provided to the connecting tube 12 will be further described later. may be omitted.

As a component corresponding to a substantial part of the present invention, the pipe connector 10 itself is manufactured by injection molding using a plastic material, but the flange in which the connecting tube 12 is not formed during injection molding of the pipe connector 10 In the center of the other side (right side in the drawing) of the body 11, a ring-shaped central protrusion 13 surrounding the hole is formed along the edge of the flow hole 11a, while the other side of the flange body 11 is outside In the part, a ring-shaped outer protrusion 14 is formed along the edge of the assembly hole 11b to surround the hole.

In the drawing, the outer protrusion 14 is provided at the top and bottom vertices of the rhombic flange body 11, respectively, but as described above, the flange body of the pipe connector 10 according to the present invention ( 11) can be variously adjusted in shape and size according to the connection flange 6 provided in the impeller casing 3 for the pump 1, so the number and arrangement of the outer protrusions 14 are also variously adjusted accordingly. It is possible to change, and the most important part is the dimensional design for the protrusion thickness t3 and t4 of the central protrusion 13 and the outer protrusion 14 as shown in FIG. 5 .

More specifically, as the thickness t3 and t4 of the central protrusion 13 and the outer protrusion 14 protrude from the surface of the flange body 11 increases, the respective protrusions 13 and 14) Although it is advantageous in terms of preventing the elastic restoring force of the waterproof pad 9 from acting on the surface of the flange body 11 except for Since there is a disadvantage that is unnecessarily increased, the watertight function by the waterproof pad 9 is not reduced in consideration of the thickness t1 before compression and the thickness t2 after compression of the waterproof pad 9 as in FIG. 3 . It is necessary to appropriately limit the protrusion thickness t3 and t4 of each protrusion 13 and 14.

Based on the above point of view, the protrusion thickness t3 and t4 of the central protrusion 13 and the outer protrusion 14 are preferably within the range of at least 0.5 mm to at most 3 mm, and within the range, the central protrusion 13 ) and the outer protrusion 14 are formed to protrude to the same thickness, so that the end faces of each protrusion 13 and 14 may be placed on a straight line (same face), but as shown in FIG. 5, the outer protrusion 14 ) is slightly thicker than the protrusion thickness t3 of the central protrusion 13 to lower the elastic restoring force of the waterproof pad 9 applied to the central protrusion 13 to an appropriate level. can see.

Based on the limited range of the protrusion thickness (t3) (t4) of the central protrusion 13 and the outer protrusion 14 described above, that is, the thickness range of 0.5 to 3 mm, the central protrusion 13 is the flange body 11 The thickness (t3) protruding from the surface of the is in the range of 0.5 to 2mm, and the thickness (t4) of the outer protrusion 14 protruding from the surface of the flange body 11 is preferably within the range of 1 to 3mm. , it is preferable that the thickness difference (t4-t3) provided between the outer protrusion 14 and the central protrusion 13 is within the range of 0.5 to 1.5 mm based on each thickness range.

The reason for limiting the thickness difference provided between the outer protrusion 14 and the central protrusion 13 to the range of 0.5 to 1.5 mm as described above is, in a thickness difference of less than 0.5 mm, the pipe connector 10 is connected to the impeller casing ( 3) The central protrusion 13 is in relatively strong close contact with the waterproof pad 9 by the fastening force of the assembling bolt 20 and the fitting nut 21 that are connected to it, and the waterproof pad 9 applied to the central protrusion 13 It is undesirable in terms of properly lowering the elastic restoring force of This is because there is a risk that the fluid may leak to the relevant part as the adhesion (watertight performance) of the product is lowered than necessary.

In addition, as shown in FIGS. 6 and 7 , the ring-shaped body thickness t5 provided by the central protrusion 13 reduces the area to which the watertight function is secured and the elastic restoring force of the waterproof pad 9 is applied. It is preferable to set it within the range of 4 to 6 mm so as to simultaneously achieve the two purposes, the thickness t6 of the ring-shaped body provided by the outer protrusion 14 is the assembling bolt 20 and the fitting nut 21 . It is preferable to set it within the range of 3 to 6 mm so as to simultaneously achieve the two purposes of preventing damage to the waterproof pad 9 by the fastening force of the waterproof pad 9 and reducing the area to which the elastic restoring force of the waterproof pad 9 is applied.

The detailed dimensional ranges of the central protrusion 13 and the outer protrusion 14 described above are preferably interpreted as one optimal embodiment applicable to the present invention, and the type and operating pressure of the pump 1 and the corresponding The dimensional range applied to the central protrusion 13 and the outer protrusion 14 can be appropriately adjusted according to the size of the pipe connector 10 and the diameter of the flow hole 11a, and the central protrusion 13 ) of the protrusion thickness (t3) and the protrusion thickness (t4) of the outer protrusion 14 are to be made the same, which is obvious to those skilled in the art to which the present invention pertains. it corresponds to

The connection operation of the pipe line for the pump 1 using the pipe connector 10 according to an embodiment of the present invention having the above configuration is as shown in FIGS. 8 and 9, the After interposing the waterproof pad 9 between the flange body 11 and the connection flange 6 of the impeller casing 3, the assembly hole formed in the flange body 11 and the waterproof pad 9 and the connection flange 6 (11b) In a state in which the assembling bolt 20 is penetrated along the (11b), (9b) and 6a, the fitting nut 21 ) to first assemble the pipe connector 10 and the impeller casing 3 .

As the end side of the inlet pipe 7 or the outlet pipe 8 is inserted into the connecting tube 12 in the same state as described above, the end side of the pipe is a locking protrusion 17 on the inner circumferential surface of the flow hole 11a. On the other hand, assembling the nut cap 22 movably installed along the outer surface of the corresponding pipe with the fastening part 12a of the outer peripheral surface of the connecting tube 12 in a screw-fastening manner, the nut cap 22 By interposing the waterproof packing 23 between the inner surface of the rear end and the front end surface of the connecting tube 12, the inlet pipe 7 and The installation work of the piping line for the pump (1) connecting the discharge pipe (8), respectively, is completed.

As described above, with the waterproof pad 9 interposed between the flange body 11 of the pipe connector 10 according to the present invention and the connection flange 6 of the impeller casing 3, the assembly bolt 20 and the fitting nut When the pipe connector 10 is firmly assembled and installed with the impeller casing 3 using (21), as shown in (A) and (B) of FIG. 10, only the central protrusion 13 and the outer protrusion 14 side The elastic restoring force of the waterproof pad 9 acts in the direction of the arrow, and the elastic restoring force of the waterproof pad 9 hardly acts on the rest of the surfaces constituting the flange body 11 as indicated by the "X" mark, while , The central protrusion 13 itself protruding from the flange body 11 and pressing the waterproof pad 9 provides a reinforcing structure that suppresses the deformation of the flange body 1, so that the pipe connector 10 is not made of a metal material. Even if it is made of a plastic material, the deformation in which the central portion of the flange body 11 is bent toward the inlet pipe 7 or the outlet pipe 8 is not induced.

In particular, when the protrusion thickness t4 of the outer protrusion 14 is slightly thicker than the protrusion thickness t3 of the central protrusion 13, the flange body is formed by the fastening force between the assembly bolt 20 and the fitting nut 21. When the waterproof pad 9 is compressed between the 11 and the connecting flange 6, the central protrusion 13 as shown by the compression thickness of the waterproof pad 9 and the length of the arrow in FIG. It is possible to lower the compression degree of the waterproof pad 9 and the elastic deformation force at the corresponding position to an appropriate level compared to the outer protrusion 14, and through this, the flange body without reducing the sealing performance of the flow hole 11a. The phenomenon (deformation) in which the central portion of (11) is bent can be prevented more reliably.

11 and 12 show the pipe connector 10 for installing the pump 1 according to another embodiment of the present invention, and the end section of the central protrusion 13 (right section with reference to FIG. 11) In a state in which a ring-shaped flat portion having a predetermined width is formed, the mounting groove 19 of the sealing ring is concave along the center portion of the flat portion, and the rest of the configuration is the one embodiment described above. will be done in the same way as

As described above, the predetermined width provided by the ring-shaped planar portion forming the end surface of the central protrusion 13 means the ring-shaped body thickness t5 provided by the central protrusion 13 in the embodiment described above. ), and when the body thickness t5 is in the range of 4 to 6 mm as in one embodiment, the insertion interval of the sealing ring provided by the mounting groove 19 (thickness of the sealing ring) is 3 It is preferable to be about 4 mm, and if necessary, the body thickness t5 of the central protrusion 13 may be increased to about 7 to 9 mm in consideration of the mounting groove 19, of course.

The inlet pipe 7 to the inlet port 4 and the outlet port 5 of the impeller casing 3 for the pump 1 using the pipe connector 10 according to another embodiment of the present invention having the configuration as described above. In the case of the operation of connecting the discharge pipe and the discharge pipe 8, as shown in FIGS. 13 and 14, the sealing ring 24 is pre-inserted into the mounting groove 19 of the central protrusion 13, and the pipe connector 10 ) can be immediately assembled with the impeller casing 3, the waterproof pad 9 is positioned between the flange body 11 and the connecting flange 6, and then each assembly hole 11b, 9b, 6a ) can be performed much more quickly and easily compared to the case of the embodiment in which the corresponding assembling work is performed, and the rest of the pipe connection process is made the same as in the embodiment described above.

As described above, the sealing ring 24 applied to another embodiment of the present invention can be manufactured with much less material than the waterproof pad 9 and its sealing performance can be secured at the same level as the waterproof pad 9 . Therefore, it becomes a more economical packing means, and even in the case of the piping connector 10 in which the mounting groove 19 of the sealing ring 24 is formed on the central protrusion 13, the waterproof pad 9 is interposed. A watertight assembly operation with the impeller casing (3) becomes possible.

As described above, the reason why the watertight assembly operation using the waterproof pad 9 is also possible in the pipe connector 10 according to another embodiment of the present invention is that it is waterproofed by the fastening force between the assembly bolt 20 and the fitting nut 21 . This is because when the pad 9 is pressed, the surface side of the waterproof pad 9 is convexly press-fitted into the mounting groove 19 to provide an excellent watertight structure. Through the pipe connector 10 according to another embodiment of the present invention, the type of packing means usable for assembly with the impeller casing 3 can be diversified into the waterproof pad 9 and the sealing ring 24 . .

As an additional matter, a thinning groove 18 of a predetermined depth is formed over the entire surface of the other side of the flange body 11 except for the edges of the central protrusion 13, the outer protrusion 14 and the flange body 11. On the other hand, reinforcement at regular intervals between the inner surface of the rim portion 15 formed along the edge of the other side of the flange body 11 by the slimming groove 18 and the outer surface of each of the protrusions 13 and 14 When the flesh 16 is connected and installed, the structural strength thereof can be sufficiently secured while further contributing to the cost reduction and weight reduction of the pipe connector 10 .

In addition, the pipe connector 10 shown in FIGS. 1 to 14 has a threaded fastening part 12a on its outer peripheral surface so as to connect the inlet pipe 7 or the outlet pipe 8 together with the nut cap 22 . ) is provided, and the pipe connector 10 shown in FIG. 15 is the corresponding pipe using the fastening part 8a formed on the outer peripheral surface of the front end of the inlet pipe 7 or the outlet pipe 8 . A connecting tube 12 having a fastening portion 12a formed on its inner circumferential surface is provided so as to directly connect the ) is provided with a pipe-type connecting tube 12 that is coupled to the outer circumferential or inner circumferential surface of the tip side by fitting.

As described above, the reason that the connecting tube 12 of various connection methods can be easily applied to the piping connector 10 according to the present invention is that the connecting flange 6 of the impeller casing 3 is buttted as described above. By safely replacing the existing metal pipe connector 10 with a plastic material through a structural improvement method in which the central protrusion 13 and the outer protrusion 14 are formed on the surface of the flange body 11, the pipe connector 10 is This is because the manufacturing operation can be converted into a multi-variety mass production system by injection molding rather than difficult machining, and from the same point of view, the connection structure for piping provided in the connecting tube 12 has several types other than the above-mentioned types. It is clear that it can be applied.

As described above, by safely replacing the existing metal pipe connector 10 with a plastic material, the manufacturer of the pump 1 product easily mass-produces various types of pipe connector 10 through injection molding of plastic material and reduces its cost. can be achieved at the same time, it is possible to provide the buyer with a set of spare pipe connectors 10 or various types of pipe connector 10 capable of various types of pipe connection work at a low price, and, of course, It is also possible to reduce the weight of the pump (1) mechanism including the connector (10), and based on this, it is possible to improve the sales performance of the pump (1) product, increase the operating profit, and lead to the reinforcement of the external competitiveness of the pump (1) product. can

On the other hand, from the point of view of the purchaser of the pump (1) product, even if the pipe connector 10 is damaged in the process of transporting and handling the product, the installation work of the pump 1 is performed without delay using the extra pipe connector 10 As the pipe connector 10 made of plastic material is applied, which is not likely to be corroded, when the life of the pump 1 product is used for a long period of time or when a defect occurs in the pump 1 itself, the assembly bolt The replacement of the pump 1 can be performed very easily by simply separating the inlet pipe 7 and the outlet pipe 8 from the pump 1 without loosening the 20 and the fitting nut 21 .

In addition, the pump (1) from among the various types of pipe connectors 10 shipped together with the product, for example, the connecting tube 12 or the fitting prefabricated connecting tube 12 in which the fastening part 12a is formed on the outer or inner circumferential surface. By selecting the pipe connector 10 with the connecting tube 12 most suitable for the installation work of (1), various assembly methods such as the nut cap 22 joint method, the socket assembly method, or the fitting type or adhesive type are used for the material of the piping line. It is possible to provide the optimal pump (1) installation piping connector (10) that can be applied regardless of (metal or plastic), which can satisfy both the manufacturer and the buyer of the pump (1) product.

1 : Pump 2 : Driving motor 3 : Impeller casing
4: Inlet port 5: Outlet port 6: Connection flange
6a, 9b, 11b: assembly hole 7: inlet pipe 8: outlet pipe
8a, 12a: fastening part 8b, 24: sealing ring 9: waterproof pad
9a, 11a: Flow hole 10: Pipe connector 11: Flange body
12: connecting tube 13: central protrusion 14: outer protrusion
15: edge portion 16: reinforcement meat 17: catchment jaw
18: slimming groove 19: mounting groove 20: assembly bolt
21: fitting nut 22: nut cap 23: packing tube
t1 : pad thickness t2 : compression thickness t3, t4 : protrusion thickness
t5, t6 : body thickness

Claims (4)

Assembled with the waterproof pad 9, which is an elastic material, interposed on the connecting flange 6 provided on the end side of the inlet port 4 and the outlet port 5 of the impeller casing 3 for the pump 1, respectively. The flange body 11 to be installed and the inlet pipe 7 and the outlet pipe 8 are formed protruding from one side of the flange body 11 to the inlet port 4 and the outlet port 5 of the impeller casing 3 . It is made to include a connecting tube 12 for connecting to each, and an assembly hole 11b between the fluid flow hole 11a and the connecting flange 6 is formed in the central part and the outer part of the flange body 11, respectively. In the pipe connector (10),
A ring-shaped central protrusion 13 is formed along the edge of the flow hole 11a in the central portion of the other side of the flange body 11 which is abutted against the connection flange 6, and the outer side of the other side of the flange body 11 is formed. A ring-shaped outer protrusion 14 is formed along the edge of the assembly hole 11b,
The pipe connector 10 comprising the flange body 11 and the connecting tube 12 including the central protrusion 13 and the outer protrusion 14 is manufactured by injection molding using a plastic material. plumbing connector. According to claim 1, wherein the thickness (t3) of the central protrusion (13) protruding from the surface of the flange body (11) is within the range of 0.5 ~ 2mm, the outer protrusion (14) is the surface of the flange body (11) The thickness (t4) protruding from the pump installation pipe connector, characterized in that within the range of 1 ~ 3mm. According to claim 1 or 2, wherein the end surface of the central protrusion (13) is a ring-shaped flat portion having a predetermined width, and sealing the waterproof pad (9) along the center portion of the flat portion. A pipe connector for installing a pump, characterized in that a mounting groove (19) into which the ring (24) can be inserted is concavely formed. According to claim 1 or 2, wherein the connecting tube (12) is a threaded fastening portion (12a) is formed on the outer peripheral surface or the inner peripheral surface of the tube body, or the tube body itself is an inlet pipe (7) or an outlet pipe (8) A pipe connector for installation of a pump, characterized in that it becomes an assembly part that is fitted with the outer circumferential or inner circumferential surface of (8).

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