JP2016089981A - Guide spacer, seal structure, pipe, and pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide spacer, a seal structure, a pipe, and a pump device that are inexpensive and have a simple structure.SOLUTION: A guide spacer 41 used for a seal structure 15, a pipe 2, and a pump device 1 is formed in a plate shape, includes an opening part 41a in contact with an outer peripheral surface of a seal member 42, and is interposed between flange parts 24, 34, and 51a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a guide spacer, a seal structure, a pipe, and a pump device that seal between planes by a seal member.

  In the technical field using liquids, as a technique for sealing between members such as flanges, a surface seal, packing, gasket, etc. are interposed between the seal surfaces which are the flat surfaces of the flanges, thereby providing a liquid-tight or air-tight seal surface. A seal structure that seals the gap is known. As such a seal structure, for example, a technique of interposing a packing or a gasket between flange portions that are seal surfaces, or a technique of providing a seal groove in the flange portion and interposing a seal member such as an O-ring in the seal groove is known. It has been. A technique of providing a backup ring in a seal groove is also known (see, for example, Patent Document 1).

  Such a seal structure is used in piping having a flange portion, devices such as a detection device and an accumulator connected to the piping, a pump device, and the like.

JP 2012-154353 A

  The seal structure described above has the following problems. That is, in the technique of interposing a packing or gasket between the flange portions, the packing or gasket may protrude from between the flange portions if the liquid pressure is high. Further, in the configuration in which the seal groove is provided in the flange portion, the demand for the surface roughness and dimensional accuracy of the seal groove is severe, the processing cost is high, and the manufacturing cost is increased. In addition, when an O-ring is used as the seal member, the shape of the seal groove may be simple. However, when an irregularly shaped seal member is used, the shape of the seal groove becomes complicated, which increases the processing cost. There's a problem.

  Therefore, an object of the present invention is to provide a guide spacer, a seal structure, a pipe, and a pump device that can reduce the manufacturing cost and have a simple configuration.

  In order to solve the above problems and achieve the object, the guide spacer, seal structure, pipe and pump device of the present invention are configured as follows.

  As one aspect of the present invention, the guide spacer is formed in a plate shape, has an opening that contacts the outer peripheral surface of the seal member, and is interposed between the flange portions.

  As one aspect of the present invention, a seal structure includes a pair of flange portions, a guide spacer that is interposed between the flange portions and has an opening, and a seal member that contacts an inner peripheral surface of the opening of the guide spacer. .

  As one aspect of the present invention, the pipe includes a pair of pipe portions having flange portions fixed to face each other, a guide spacer having an opening portion interposed between the flange portions, and the opening of the guide spacer. A seal structure including a seal member that comes into contact with the inner peripheral surface of the portion.

  As one aspect of the present invention, a pump device includes a pump, a first piping connected to the primary side of the pump, a self-priming chamber connected to the secondary side of the pump, and a secondary side of the self-priming chamber A flow path portion having a second piping portion provided in the first piping portion, a first opening portion continuous with the self-priming chamber, and a first flange portion formed with a second opening portion continuous with the second piping portion; And a detector having a flow path in which a sensor is disposed, and a second flange portion in which openings on the primary side and the secondary side of the flow path facing the first opening and the second opening are formed. A guide spacer interposed between the first flange portion and the second flange portion and having an opening portion surrounding the first opening portion and the second opening portion of the first flange portion; and the first opening portion. The opening portion of the guide spacer surrounding the portion and the second opening portion Inner peripheral surface, and a seal structure comprising the first flange portion and the second flange portion abutting the sealing member.

  According to the present invention, it is possible to provide a guide spacer, a seal structure, a pipe, and a pump device that are inexpensive and have a simple configuration.

The perspective view which shows the structure of the pump apparatus which concerns on the 1st Embodiment of this invention. The disassembled perspective view which shows the principal part structure used for the pump apparatus. Sectional drawing which shows the principal part structure of the pump apparatus. The top view which shows the structure of the guide spacer used for the seal structure of the pump apparatus. The top view which shows the structure of the sealing member used for the seal structure. The top view which shows the structure of piping using the seal structure which concerns on the 2nd Embodiment of this invention. The top view which shows the structure of the guide spacer used for the seal structure.

(First embodiment)
Hereinafter, a pump device 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is a perspective view showing a configuration of a pump device 1 according to the first embodiment of the present invention. FIG. 2 is an exploded perspective view showing configurations of a flow path member 11, a detection device 14, and a seal structure 15 used in the pump device 1. 3 is a cross-sectional view illustrating the configuration of the flow path member 11, the detection device 14, and the seal structure 15. FIG. 4 is a plan view illustrating the configuration of the guide spacer 41 used in the seal structure 15. FIG. It is a top view which shows the structure of the sealing member 42 used.

  As shown in FIG. 1, the pump device 1 includes a base 10, a flow path member 11 provided in the base 10, a pump 12 provided in a midway portion of the flow path member 11, and a midway portion of the flow path member 11. Between the accumulator 13 provided on the flow path member 11, the detection device 14 provided on the flow path member 11 for detecting the pressure, flow rate or temperature of the water discharged from the pump 12, and between the flow path member 11 and the detection apparatus 14 pump 12. And a control panel 16 for controlling the pump 12. In the pump device 1, a cover member 17 that covers the flow path member 11, the pump 12, the accumulator 13, the detection device 14, and the control panel 16 is provided on the base 10.

  In such a pump device 1, for example, a flow path member 11, a pump 12, an accumulator 13, a detection device 14, a seal structure 15, and a control panel 16 are provided on a base 10, and the base 10 is covered with a cover member 17. Thus, each component is integrally provided on the base 10. The pump device 1 detects information such as the pressure, flow rate or temperature of the water discharged from the pump 12 by the detection device 14, and the pump 12 is controlled by the control panel 16 based on the detected information. Water that is a fluid to be supplied is configured to be supplied (water supply) to the secondary side.

  The flow path member 11 is a pipe part that is provided on the base 10 and has a primary side connected to a water supply source and a secondary side connected to a water supply destination. The flow path member 11 is connected to the primary side of the pump device 1, connected to the first piping portion 21 connected to the pump 12, to the first piping portion 21 via the pump 12, and to the detection device 14. A self-priming chamber 22 for self-sufficiency, and a second piping section 23 connected to the self-priming chamber 22 via a detection device 14. Further, the flow path member 11 includes a first flange portion 24 that fixes the detection device 14 connected to the self-priming chamber 22 and the second piping portion 23 on the upper surfaces of the self-priming chamber 22 and the second piping portion 23. Yes.

  The first piping part 21 is connected in the pump casing of the pump 12. The self-priming chamber 22 includes a hole 22b that is closed by a plug 22a or the like so that priming water can be supplied therein. The second piping unit 23 is connected to the secondary side of the pump device 1.

  The first flange portion 24 has a first opening portion 24a and a second opening portion 24b connected to the self-priming chamber 22 and the second piping portion 23, respectively. As for the 1st flange part 24, the main surface facing the detection apparatus 14 around the 1st opening part 24a and the 2nd opening part 24b is formed in the plane. The first flange portion 24 includes, for example, a hole 24d into which a fastening member 24c such as an insert bolt and a fastening member 99 such as a bolt are inserted.

  The pump 12 includes a motor 12a connected to the control panel 16 via a signal line. The pump 12 includes a rotating shaft connected to the motor 12 a, an impeller, and a pump casing connected to the flow path member 11. The pump 12 is configured such that when the motor 12a is driven, the impeller rotates in the pump casing and the water in the flow path member 11 can be pumped. The accumulator 13 is, for example, the flow path member 11 and provided on the secondary side of the pump 12.

  The detection device 14 is provided in the flow path member 11 on the secondary side of the pump 12. Specifically, as shown in FIG. 3, the detection device 14 includes an outer member 31, a sensor 32 capable of detecting a flow rate or pressure, a substrate 33 connected to the sensor 32, and a flow path member of the outer member 31. 11, and a second flange portion 34 provided at an end portion facing the main body 11. The detection device 14 is formed so that information detected by the sensor 32 can be transmitted from the substrate 33 to the control panel 16 via a signal line.

  The outer member 31 has a flow path 31a whose primary side is connected to the first opening 24a and whose secondary side is connected to the second opening 24b. The outer member 31 includes an accommodating portion 31b for the substrate 33 that forms a liquid-tight space. In addition, the outer member 31 has a second flange portion 34 on the end surface where the flow path 31a opens.

  The sensor 32 is a pressure sensor and a flow rate sensor arranged in the flow path 31 a of the outer member 31. The board | substrate 33 is fixed in the accommodating part 31b.

  As for the 2nd flange part 34, the surface facing the 1st flange part 24 is formed in the plane. In the second flange portion 34, openings 34a at both ends of the flow path 31a are formed at positions facing the first opening portion 24a and the second opening portion 24b of the first flange portion 24, respectively. The second flange portion 34 is fixed to the first flange portion 24 by a fastening member such as a bolt or a nut.

  The seal structure 15 includes a guide spacer 41 and a seal member 42. The seal structure 15 includes the guide spacer 41 and the seal member 42, and the first flange portion 24 and the second flange portion 34 that are to be sealed.

  In the seal structure 15, the guide spacer 41 and the seal member 42 are arranged between the first flange portion 24 and the second flange portion 34, and the first flange portion 24 and the second flange portion 34 are fixed. The space between the first flange portion 24 and the second flange portion 34 is sealed.

  The guide spacer 41 is a plate-like member formed in substantially the same shape as the outer peripheral edges of the first flange portion 24 and the second flange portion 34. For example, the guide spacer 41 is pressed by the first flange portion 24 and the second flange portion 34 when the first flange portion 24 and the second flange portion 34 are fixed, in other words, the first flange portion 24 and the second flange portion 34. It is made of a material having a strength capable of withstanding a fastening force for fixing the portion 34. For example, the guide spacer 41 is formed of a metal material or a resin material. The guide spacer 41 includes a first opening 24 a and a second opening 24 b of the first flange portion 24, and an opening 41 a that covers the outer periphery of the opening 34 a of the second flange portion 34. The guide spacer 41 is formed with an insertion hole 41b through which a fastening member 99 for fixing the first flange portion 24 and the second flange portion 34 can be inserted.

  In other words, the guide spacer 41 is configured by forming an opening 41 a and an insertion hole 41 b in a base 41 c having substantially the same shape as the first flange portion 24 and the second flange portion 34.

  The opening 41a of the guide spacer 41 has, for example, a shape that covers both the first opening 24a and the second opening 24b, and is larger than the inner periphery of the first opening 24a and the second opening 24b. It is formed with one opening. In other words, the opening 41a is formed in the same shape as the shape of the outer peripheral edge of the seal member 42 so that the seal member 42 is disposed on the inner peripheral surface of the opening 41a and the outer peripheral surface of the seal member 42 can contact. Has been.

  Specifically, as shown in FIGS. 3 and 4, the opening 41a covers the periphery of both the first opening 24a and the second opening 24b, and the first opening 24a and the second opening 24b. It is formed by one opening that does not partition. As shown in FIG. 3, the opening 41a is formed in a shape larger than at least the wire diameter (diameter, thickness) of the seal member 42 than the inner periphery of the first opening 24a and the second opening 24b. Yes.

  The seal member 42 has a wire diameter larger than the thickness of the guide spacer 41, and has a circular cross section, for example. The outer peripheral surface of the seal member 42 abuts on the inner peripheral surface of the opening 41 a of the guide spacer 41. The sealing member 42 has an outer peripheral shape that is substantially the same as the opening shape of the opening 41a of the guide spacer 41 and a shape that surrounds each of the first opening 24a and the second opening 24b. ing.

  The control panel 16 is electrically connected to the motor 12a and the detection device 14 through a signal line. The control panel 16 controls the driving of the motor 12a based on the information detected by the detection device 14.

  In the pump device 1 configured as described above, the detection device 14 is assembled liquid-tightly on the flow path member 11 via the seal structure 15. Specifically, when the detection device 14 is attached to the flow path member 11, the first opening 24a and the second opening are formed on the first flange portion 24 of the flow path member 11, as shown in FIGS. The guide spacer 41 and the seal member 42 are disposed so as to cover the portion 24b. Thereafter, the second flange portion 34 of the detection device 14 is disposed, and the second flange portion 34 is fixed to the first flange portion 24 by the fastening member 99.

  Thereby, as shown in FIG. 3, the upper and lower surfaces (upper and lower ends) of the first flange portion 24 and the second flange portion 34 of the seal member 42 are formed by the opposing surfaces of the first flange portion 24 and the second flange portion 34. Compressed and tightly contacts the first flange portion 24 and the second flange portion 34. Further, the seal member 42 that has spread in the width direction due to the compression is in close contact with the inner peripheral surface of the opening 41 a of the guide spacer 41.

  Further, since the guide spacer 41 is not disposed between the first opening 24a and the second opening 24b, and the seal member 42 partitions the first opening 24a and the second opening 24b, the first opening The seal member 42 between 24 a and the second opening 24 b is in close contact with only the first flange portion 24 and the second flange portion 34.

  When the pump 12 is driven in this state, the first flange portion 24 and the second flange portion 34 are sealed by the seal member 42, so that the fluid does not leak from the first opening 24a. It passes through the path 31a and flows to the second opening 24b. Even when the pressure of the fluid is high, the seal member 42 abuts and is supported by the inner peripheral surface of the opening 41a of the guide spacer 41. It is prevented from protruding.

  Moreover, since the pressure in the 1st opening part 24a and the 2nd opening part 24b of the fluid which flows through the flow path 31a of the detection apparatus 14 is the same pressure, it is located between the 1st opening part 24a and the 2nd opening part 24b. The seal member 42 is compressed from both the first opening 24a and the second opening 24b side.

  For this reason, since the space between the first opening 24a and the second opening 24b is sealed regardless of the pressure of the fluid flowing on the secondary side of the pump 12, the first opening 24a to the second opening 24b are sealed. In addition, it is possible to prevent the detection device 14 from flowing without passing through the flow path 31a.

  Further, as the pressure of the fluid becomes higher, the seal member 42 positioned between the first opening 24a and the second opening 24b becomes closer to the first opening 24a and the second opening 24b (the primary side of the flow path 31a and The amount of deformation compressed by the fluid from both of the secondary openings 34a) increases. For this reason, since a part of the compressed seal member 42 is more closely attached to the first flange portion 24 and the second flange portion 34, a high sealing property is provided between the first opening portion 24a and the second opening portion 24b. And no water leaks between them.

  According to the pump device 1 using the seal structure configured as described above, the guide spacer 41 and the seal member are provided between the first flange portion 24 and the second flange portion 34 that connect the flow path member 11 and the detection device 14 to each other. By providing 42, it becomes possible to seal between the 1st flange part 24 and the 2nd flange part 34. FIG.

  Further, the guide spacer 41 can contact the seal member 42 with its inner peripheral surface, and the first opening 24a and the second opening 24b of the first flange portion 24 to be sealed, and A simple shape that covers the periphery of the opening 34 a of the flow path 31 a of the second flange portion 34 may be used. Similarly, the seal member 42 can contact the inner peripheral surface of the guide spacer 41, the main surface of the first flange portion 24, and the main surface of the second flange portion 34, and the first opening 24a, The simple shape which covers the opening 34a of the primary side and the secondary side of 2 opening part 24b and the flow path 31a may be sufficient.

  In addition, since the guide spacer 41 serves as a seal groove that contacts the outer peripheral surface of the seal member 42, it is not necessary to provide a seal groove in which the seal member 42 is disposed in the first flange portion 24 or the second flange portion 34. . Since high dimensional accuracy and surface roughness are required for the seal groove, the pump device 1 that does not require the provision of such a seal groove reduces the manufacturing cost of the flow path member 11, the detection device 14, and the seal structure 15. It becomes possible to reduce.

  The seal structure 15 is configured to fasten the first flange portion 24 and the second flange portion 34 with the guide spacer 41 interposed by the fastening member 99, and the seal member 42 is connected to the opening 41 a of the guide spacer 41. It is the structure supported by an inner peripheral surface. For this reason, even if the pressure of the fluid flowing in the pump device 1 becomes high, it is possible to prevent the seal member 42 from being displaced or dropped out, and it is possible to ensure high pressure resistance and sealing performance.

  Further, when the guide spacer 41 is disposed between the first flange portion 24 and the second flange portion 34, the guide spacer 41 can withstand a fastening force for fastening the flange portions 24, 34 with the fastening member 99, and the opening portion thereof. It is sufficient if the seal member 42 can be supported by the inner peripheral surface of 41a. For this reason, since the material is not particularly limited, the material cost can be reduced. Moreover, since the material can be appropriately selected depending on the fluid to be used, it is highly versatile.

As described above, according to the pump device 1 according to the first embodiment of the present invention, the seal structure 15 including the first flange portion 24, the second flange portion 34, the guide spacer 41, and the seal member 42 is used. Thus, it is possible to reduce the manufacturing cost with a simple structure while having high sealing performance.
(Second Embodiment)
Next, the configuration of the pipe 2 using the seal structure 15A according to the second embodiment of the present invention will be described with reference to FIGS.
FIG. 6 is a plan view showing the configuration of the pipe 2 using the seal structure 15A according to the second embodiment of the present invention, and FIG. 7 is a plan view showing the configuration of the guide spacer 41A used in the seal structure 15A. Of the seal structure 15A used for the pipe 2 according to the second embodiment, the same reference numerals are given to the same configurations as the seal structure 15 used for the pump device 1 according to the first embodiment described above, Detailed description thereof is omitted.

  As shown in FIG. 6, the pipe 2 includes a pair of pipe parts 51 and a seal structure 15 </ b> A provided between the pair of pipe parts 51. In FIG. 1, for convenience of explanation, one pipe part 51 is omitted from the pair of pipe parts 51.

  The pipe part 51 is provided with a flange part 51a at an end part thereof, and the pair of pipe parts 51 are integrally formed by fixing the flange part 51a with a fastening member such as a bolt.

  The flange portion 51a is formed with an opening 51b that forms a flow path of the tube portion 51 at the center, and an insertion hole 51c into which a fastening member is inserted. For example, four insertion holes 51c are provided at equal intervals on the outer peripheral side of the flange portion 51a.

  The seal structure 15A includes a guide spacer 41A and a seal member 42A. The seal structure 15 </ b> A includes the guide spacer 41 </ b> A and the seal member 42 </ b> A, and the flange portions 51 a of the pair of pipe portions 51 to be sealed. In the seal structure 15 </ b> A, the guide spacer 41 </ b> A and the seal member 42 </ b> A are disposed between the pair of flange portions 51 a, and the pair of flange portions 51 a are fixed by a fastening member, thereby sealing between the pair of pipe portions 51.

  The guide spacer 41A is an annular plate-shaped member having the same outer peripheral edge as the outer peripheral edge of the flange portion 51a. The guide spacer 41A is made of, for example, a metal material. The guide spacer 41 </ b> A includes an opening 41 a that covers the outer periphery of the opening 51 b of the pipe portion 51. The guide spacer 41A is formed with four insertion holes 41b into which a fastening member for fixing the pair of flange portions 51a can be inserted. The guide spacer 41A has cutout portions 41d at four locations on the outer peripheral surface thereof.

  In other words, the guide spacer 41A is configured by forming an opening 41a, an insertion hole 41b, and a notch 41d in a base 41c having a circular relationship that is substantially the same shape as the outer peripheral edge of the flange 51a.

  The opening 41a is, for example, a circular opening that has a shape that covers the opening 51b of the tube 51 and has an inner diameter that is larger than the inner diameter of the opening 51b. In other words, when the seal member 42 is disposed on the inner peripheral surface of the opening 41a, the opening 41a of the guide spacer 41A is arranged so that the seal member 42 is disposed between the opposed surfaces of the pair of flange portions 51a. The shape is formed.

  Specifically, as shown in FIGS. 6 and 7, the opening 41 a covers the periphery of the opening 51 b of the tube 51, and the inner diameter of the opening 51 b of the tube 51 and at least a cross section of the seal member 42 </ b> A. It is formed in an inner peripheral shape having a difference equal to or greater than the thickness of the shape, in other words, the thickness of the seal member 42A.

  The notches 41d are formed in a semicircular shape, and are arranged between the adjacent insertion holes 41b. For example, the end of the notch 41d on the center side of the guide spacer 41A is disposed closer to the center of the guide spacer 41A than the end of the insertion hole 41b on the center side of the guide spacer 41A. In other words, the notch 41d is formed on the center side of the guide spacer 41A with respect to the insertion hole 41b, so that the fastening member can be arranged even if the fastening member is arranged between the insertion holes 41b. Has been. Further, the radius of curvature of the notch 41d is formed larger than the radius of the insertion hole 41b.

  The seal member 42A is an O-ring that has a wire diameter larger than the thickness of the guide spacer 41A. The outer peripheral surface of the seal member 42A is in contact with the inner peripheral surface of the opening 41a of the guide spacer 41A. The seal member 42A is formed so that the outer peripheral shape thereof is substantially the same as the opening shape of the opening 41a of the guide spacer 41A and surrounds the periphery of the opening 51b of the tube portion 51. The seal member 42A is a so-called flat seal that seals between the flange portions 51a.

  According to the pipe 2 using the seal structure 15 </ b> A configured in this manner, the guide spacer 41 </ b> A and the seal member 42 </ b> A are provided between the flange portions 51 a of the pair of pipe portions 51, thereby sealing the pump device 1 described above. As with the structure 15, it is possible to seal between the flange portions 51a.

  The guide spacer 41A can easily contact the inner peripheral surface of the seal member 42A and covers the periphery of the opening 51b that opens in the flange portion 51a of the pair of pipe portions 51 to be sealed. Any shape is acceptable. Similarly, the seal member 42A can contact the inner peripheral surface of the opening 41a of the guide spacer 41A and the main surface of the pair of flange portions 51a, and the opening 51b of the pipe portion 51 A simple shape covering the periphery may be used.

  Further, since the guide spacer 41A functions as a seal groove that contacts the outer peripheral surface of the seal member 42A, it is not necessary to provide a seal groove in which the seal member 42A is disposed in the flange portion 51a. For this reason, it becomes possible to reduce the manufacturing cost of the pipe part 51 and the seal structure 15A.

  Further, the seal structure 15A has a configuration in which the flange portion 51a with the guide spacer 41A interposed therebetween is fastened by a fastening member, and the seal member 42A is supported on the inner peripheral surface of the guide spacer 41A. For this reason, even if the pressure of the fluid flowing in the pipe 2 becomes high, it is possible to prevent the seal member 42A from being displaced or dropped out, and it is possible to ensure high pressure resistance and sealing performance.

  Further, the guide spacer 41A can be used for, for example, a pipe in which the flange portion 51a is fixed by eight fastening members by providing a notch portion 41d between the insertion holes 41b into which the fastening members are inserted. That is, the four fastening members are inserted into the insertion hole 41b, and the remaining four fastening members are arranged in the cutout portion 41d, so that the flange portion 51a can be fixed by the eight fastening members. For this reason, it becomes possible to share in the flange part 51a from which the number of the insertion holes 51c which insert a fastening member differs, and versatility is high.

  Further, when the guide spacer 41A is formed of a metal material, the cutout portion 41d becomes a thinned portion, so that the weight of the guide spacer 41A can be reduced.

  Furthermore, since the seal member 42A can use an O-ring capable of sealing between the planes, the cost becomes low.

  As described above, according to the pipe 2 according to the second embodiment of the present invention, the seal structure 15A configured by the pair of flange portions 51a, the guide spacer 41A, and the seal member 42A is used, thereby having high sealing performance. In addition, the manufacturing cost can be reduced with a simple configuration.

  The present invention is not limited to the above embodiment. For example, in the above-described example, the guide spacer 41 of the seal structure 15 is configured to have one opening 41a, and the seal member 42 is one seal member that surrounds the first opening 24a and the second opening 24b, respectively. Although the configuration of 42 is described, the present invention is not limited to this. For example, the guide spacer 41 has two openings that surround the first opening 24a and the second opening 24b, respectively, and the seal member 42 covers two seals that cover the first opening 24a and the second opening 24b, respectively. The structure used as a member may be sufficient.

  In the above-described example, the seal structures 15 and 15A have been described as being provided in the pump device 1 and the pipe 2, respectively. However, the present invention is not limited thereto. Can be used. In particular, the seal member 42, 42A is configured as a guide spacer having an opening 41a having a shape that can use an O-ring that is generally compliant with the JIS standard or the like that is generally distributed. 15 and 15A can be used for the structure which provides various piping and other surface seals, and has high versatility.

  Further, the seal structures 15 and 15A described above may be configured such that a backup ring is interposed between the opening 41a of the guide spacers 41 and 41A and the seal members 42 and 42A. In this case, the shape of the opening 41a may be larger than the openings 24A, 24b, and 51b of the flange portions 24, 34, and 51a by the thickness of the seal members 42 and 42A and the backup ring.

  Moreover, although the structure which fixes between the flange parts 51a of the piping 2 with four fastening members was demonstrated in the example mentioned above, it is not limited to this, What is necessary is just a structure fastened with a some fastening member. In this case, the number of the insertion holes 41b of the guide spacer 41 may be the same as the number of the fastening members, and the cutout portions 41d may be provided between the adjacent insertion holes 41b. In addition, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Pump apparatus, 2 ... Pipe, 10 ... Base, 11 ... Flow path member, 12 ... Pump, 12a ... Motor, 13 ... Accumulator, 14 ... Detection apparatus, 15, 15A ... Seal structure, 16 ... Control panel, 17 ... Cover member, 21 ... first piping part, 22 ... self-priming chamber, 22a ... plug, 22b ... hole, 23 ... second piping part, 24 ... first flange part (flange part), 24a ... first opening part ( (Opening), 24b ... second opening (opening), 24c ... fastening member, 24d ... hole, 31 ... outer member, 31a ... flow path, 31b ... housing part, 32 ... sensor, 33 ... substrate, 34 ... Second flange portion (flange portion), 34a ... opening (opening portion), 41, 41A ... guide spacer, 41a ... opening portion, 41b ... insertion hole, 41c ... base portion, 41d ... notch portion, 42, 42A ... sealing member, 51 ... pipe part, 51a ... Fran Department, 51b ... opening (opening), 51c ... insertion hole, 52 ... flange portion, 99 ... fastening member.

Claims (12)

  A guide spacer that is formed in a plate shape and has an opening that contacts the outer peripheral surface of the seal member, and is interposed between flange portions.   The guide spacer according to claim 1, further comprising an insertion hole into which a fastening member for fastening between the flange portions is inserted. A pair of flange portions;
A guide spacer interposed between the flange portions and having an opening;
A seal member in contact with the inner peripheral surface of the opening of the guide spacer;
A seal structure comprising: The pair of flange portions are formed with openings through which fluid passes,
The seal structure according to claim 3, wherein the opening of the guide spacer is formed to be larger than the opening of the flange by at least the same width as the wire diameter of the seal member. A pair of pipe portions having flange portions fixed opposite to each other;
A seal structure including a guide spacer interposed between the flange portions and having an opening; and a seal member that contacts an inner peripheral surface of the opening of the guide spacer;
Piping characterized by comprising. The flange portion is formed with an opening through which a fluid passes,
The pipe according to claim 5, wherein the opening of the guide spacer is formed to be larger than the opening of the flange by at least the same width as the wire diameter of the seal member.   The piping according to claim 5, wherein the guide spacer includes a plurality of insertion holes into which fastening members for fastening the flange portion are inserted.   The pipe according to claim 7, wherein the guide spacer further includes a notch portion in which a fastening member for fastening the flange portion between the adjacent insertion holes can be arranged. A pump,
A first piping connected to a primary side of the pump; a self-priming chamber connected to a secondary side of the pump; a second piping provided on a secondary side of the self-priming chamber; and the self-priming chamber A flow path portion having a first flange portion formed with a first opening portion continuous with the second piping portion and a second opening portion continuous with the second piping portion;
A detector having a flow path in which a sensor is disposed, and a second flange portion in which primary and secondary openings of the flow path facing the first opening and the second opening are formed. When,
A guide spacer interposed between the first flange portion and the second flange portion and having an opening portion surrounding the first opening portion and the second opening portion of the first flange portion; and the first opening portion. And a sealing structure including a sealing member that abuts the inner peripheral surface of the opening of the guide spacer, the first flange, and the second flange, surrounding the second opening,
A pump device comprising:   The opening of the guide spacer is formed to be larger than the first opening and the second opening by at least the same width as the wire diameter of the seal member. Pump device.   The pump device according to claim 10, wherein the guide spacer includes a plurality of insertion holes into which fastening members that fasten the first flange portion and the second flange portion are inserted. The opening of the guide spacer is formed by one opening that surrounds the first opening and the second opening,
The pump device according to claim 9, wherein the seal member is formed by a single member that surrounds the entire circumference of the first opening and the second opening.

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