JP2017129083A - Priming cup structure and water supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a priming cup structure and a water supply device that can prevent water from splashing from a priming cup.SOLUTION: A priming cup structure 33 used for a water supply device 1 comprises: a priming cup provided in an upper surface of a self-priming chamber 23; a cylindrical wall part 42 provided around the priming cup, and of which a portion includes a slit 42a extending in an axial direction; and a plug 44 provided on the priming cup.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a priming port structure and a water supply device for priming a pump.

  Currently, as a water supply device that supplies liquid to the secondary side, a casing, a pump, and a self-priming chamber provided on the secondary side of the pump are provided on the base, and these components are covered by a pump cover and are configured integrally. Technology is known. Such a water supply apparatus performs priming for supplying water into the pump chamber of the pump at the time of initial startup. In order to perform this priming, a configuration is known in which a priming port and an exhaust port are provided in the upper part of the pump chamber, and the priming port and the exhaust port are closed with a plug (see, for example, Patent Document 1).

JP 2000-297791 A

  The water supply apparatus described above has the following problems. That is, there is a demand for reducing the manufacturing cost of the water supply device, and it is required to share the exhaust port with the priming port. When the exhaust port is shared with the priming port in the configuration in which the priming port is closed using the plug described above, water is injected from the priming port when exhausting at the time of self-priming or depressurization at the time of confirming startup. However, there is a risk of water spreading around.

  Then, an object of this invention is to provide the priming port structure and water supply apparatus which can prevent that water scatters from a priming port.

  In order to solve the problems and achieve the object, the priming water structure and the water supply apparatus of the present invention are configured as follows.

  As one aspect of the present invention, a priming port structure includes a priming port provided on the upper surface of the self-priming chamber, a cylindrical wall portion provided around the priming port, and having a slit extending in the axial direction at a part thereof. And a plug provided at the priming port.

  As one aspect of the present invention, a water supply device includes a base, a casing provided on the base, a self-priming chamber provided in the casing, a priming port provided on an upper surface of the self-priming chamber, and the priming port. A cylindrical wall portion having a slit extending in the axial direction in a part thereof, and a priming port structure including a plug provided in the priming port.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the priming water structure and water supply apparatus which can prevent that water scatters from a priming water mouth.

The side view which shows the structure of the water supply apparatus which concerns on one Embodiment of this invention. The top view which shows the structure of the water supply apparatus. The top view which shows the principal part structure of the self-priming chamber used for the water supply apparatus. Sectional drawing which shows the principal part structure of the self-priming chamber. The top view which shows the principal part structure of the self-priming chamber. Sectional drawing which shows the structure of the priming port structure provided in the self-priming chamber. Sectional drawing which shows an example of a structure and use of the priming opening structure provided in the self-priming chamber. Sectional drawing which shows the structure of the priming port structure provided in the self-priming chamber of the water supply apparatus which concerns on other embodiment of this invention.

Hereinafter, the water supply apparatus 1 which concerns on one Embodiment of this invention is demonstrated using FIG. 1 thru | or FIG.
1 is a side view showing the configuration of a water supply apparatus 1 according to an embodiment of the present invention, FIG. 2 is a plan view showing the configuration of the water supply apparatus 1, and FIG. 3 is an upper view of a self-priming chamber 23 used in the water supply apparatus 1. FIG. 4 is a sectional view showing the configuration of the upper self-priming chamber 32 and the priming port structure 33, and FIG. 5 shows the configuration of the upper self-priming chamber 32 and the priming port structure 33. FIG. 6 is a sectional view showing the structure of the priming mouth structure 33, and FIG.

  As shown in FIGS. 1 and 2, the water supply device 1 includes a base 11, a casing 12, a pump unit 13, a detection device 14, an accumulator 15, a control device 16, and a pump cover. .

  The base 11 supports the casing 12, the detection device 14, the control device 16, and the pump cover. The base 11 has a drain hole 11 a on the upper surface thereof for draining water on the base 11 to the installation surface of the base 11. The drain hole 11a is provided, for example, on the upper surface of the base 11 and between flange members 25 provided in a suction pipe 21 and a discharge pipe 24 of the casing 12 described later.

  The casing 12 is formed of a metal material or a resin material. The casing 12 is provided in each of the suction pipe 21, the pump casing 22, the self-suction chamber 23, the discharge pipe 24 having a discharge port, the suction pipe 21 and the discharge pipe 24, and the pipe 100 is connected thereto. The flange member 25 is provided. The casing 12 is fixed to the base 11 by a fastening member 99 such as a bolt.

  The suction pipe 21 has a suction port provided at one end portion, and a rhombus-shaped flange portion 21 a provided at the suction port so that the flange member 25 can be fixed by two fastening members 99. As for the suction pipeline 21, the flange member 25 is fixed to the flange part 21a. The other end of the suction pipe 21 is provided integrally with the pump casing 22.

  The pump casing 22 constitutes a part of the pump unit 13. The pump casing 22 is configured to accommodate an impeller (described later) of the pump unit 13 therein. The pump casing 22 is fluidly continuous with the suction conduit 21. The pump casing 22 is fluidly continuous with the self-priming chamber 23.

  The self-priming chamber 23 includes a gas-liquid separation chamber and a gas-liquid separation plate that perform gas-liquid separation inside. The self-priming chamber 23 is provided adjacent to the suction pipe 21. The self-priming chamber 23 is fixed to the lower self-priming chamber 31 integrally formed with the pump casing 22 and the upper portion of the lower self-priming chamber 31 with a fastening member 99, and constitutes a gas-liquid separation chamber together with the lower self-priming chamber 31. And an upper self-priming chamber 32.

  As shown in FIGS. 3 and 4, the self-priming chamber 23 includes a priming port structure 33 that can supply priming water into the gas-liquid separation chamber and a mounting portion 34 that can fix the detection device 14. 32 on the upper surface 32a. In the self-priming chamber 23, the lower self-priming chamber 31 is integrally formed with the pump casing 22, and the upper self-priming chamber 32, the priming port structure 33 excluding the plug 44 described later, and the mounting portion 34 are integrally formed by casting or injection molding. Molded.

  As shown in FIGS. 3 to 7, the priming port structure 33 includes a priming port 41 provided on the ceiling surface of the upper self-priming chamber 32, a cylindrical wall portion 42 provided around the priming port 41, and An annular groove 43 provided at the upper surface of the priming port 41 and a corner of the inner peripheral surface of the wall portion 42, and a plug 44 that closes the priming port 41 are provided. The priming port structure 33 is provided on the outer edge side of the upper surface 32 a of the upper self-priming chamber 32 and adjacent to the suction conduit 21 and the flange member 25.

  The priming port 41 is provided with a female screw portion 41a on the inner peripheral surface. The priming port 41 has a seating surface 41 b that comes into contact with the plug 44. The seat surface 41 b is configured by the upper surface of the priming port 41.

  The wall portion 42 is configured in a cylindrical shape, and has a slit 42 a extending along the axial direction from the upper end of the wall portion 42 to the groove portion 43 in a part of the outer peripheral surface thereof. In other words, the wall portion 42 is configured such that a part of the cylindrical peripheral surface is partially cut out in the direction of gravity.

  The height of the wall portion 42 is such that the plug 44 fixed to the priming port 41 is rotated in the opening direction to loosen the plug 44, and the flow path of water between the plug 44 and the priming port 41 is indicated by an arrow in FIG. Is configured to a height that covers at least a part of the outer peripheral surface of a base portion 44a (described later) of the plug 44. The wall portion 42 is configured to have a height such that a later-described handle portion 44 c of the plug 44 is located above the upper end of the wall portion 42 in a state where the plug 44 is fixed to the priming port 41. The slit 42 a of the wall portion 42 is disposed toward the flange member 25 provided in the suction conduit 21. In other words, the slit 42 a is configured by opening a part of the linear wall portion 42 connecting the flange member 25 from the center of the wall portion 42.

  The groove portion 43 is provided between the seat surface 41b of the priming port 41 and the inner peripheral surface of the wall portion 42, and constitutes a space that is recessed from the seat surface 41b. The inner diameter of the groove portion 43 is configured to be smaller than the outer diameter of the base portion 44a.

  The plug 44 includes a base portion 44a that contacts the seat surface 41b of the priming port 41, a male screw portion 44b provided on one main surface of the base portion 44a, and a handle portion 44c provided on the other main surface of the base portion 44a. , And a sealing member 44d.

  The base 44a is configured in a disc shape. The base 44a has a seal groove 44e on one main surface. One main surface of the base portion 44 a contacts the seat surface 41 b of the priming port 41. The outer diameter of the base portion 44 a is equal to or larger than the outer diameter of the seat surface 41 b of the priming port 41 and smaller than the inner diameter of the inner peripheral surface of the wall portion 42.

  The seal groove 44e is configured such that the depth from one main surface of the base portion 44a is slightly shallower than the diameter in the axial direction of the seal member 44d, and the radial groove width of the base portion 44a is in the axial direction of the seal member 44d. It is configured to be slightly wider than the perpendicular diameter. That is, the seal groove 44e slightly protrudes from one main surface of the base portion 44a when the seal member 44d is disposed, and accommodates the collapsed seal member 44d when the seal member 44d is crushed. Configured in a possible shape.

  The male screw portion 44 b is configured to be screwable with the female screw portion 41 a of the priming port 41.

  The handle portion 44c is a protrusion that can rotate the plug 44 directly by an operator or indirectly using a jig or the like.

  The attachment portion 34 is integrally provided on the upper surface 32 a of the upper self-priming chamber 32. The attachment portion 34 is fluidly connected to the self-priming chamber 23 and the discharge conduit 24.

  The discharge pipe 24 includes a discharge port provided at one end portion, and a diamond-shaped flange portion 24 a provided at the discharge port and capable of fixing the flange member 25 with two fastening members 99. As for the discharge pipeline 24, the flange member 25 is fixed to the flange part 24a.

  The flange member 25 is a so-called diamond flange that can be fixed to the flange portion 24 a by two fastening members 99. As shown in FIG. 1, the flange member 25 is formed in a rhombus shape when the opening 25 a to which the pipe 100 is fixed is viewed from the front. The flange member 25 is fixed to the flange portions 21a and 24a so that the outer peripheral surface thereof is inclined with respect to the direction of gravity.

  The pump unit 13 includes a pump casing 22, a motor 51 fixed to the pump casing 22, a rotating shaft provided on the motor 51, and an impeller provided on the rotating shaft and housed in the pump casing 22. Yes. Such a pump unit 13 is, for example, a cascade pump.

  The detection device 14 is formed so as to be able to detect the pressure and flow rate of the liquid passing through the inside thereof. The detection device 14 is fixed to a mounting portion 34 provided in the self-priming chamber 23. The detection device 14 includes therein a flow path that continues the self-priming chamber 23 and the discharge pipe 24 via the attachment portion 34, and a pressure sensor and a flow rate sensor provided on the flow path. In other words, the detection device 14 attached to the attachment portion 34 constitutes a flow path between the self-priming chamber 23 and the discharge conduit 24 and detects the pressure and flow rate between the self-priming chamber 23 and the discharge conduit 24. .

  The accumulator 15 is provided on the secondary side of the pump unit 13. The accumulator 15 is provided in a part of the discharge conduit 24, for example.

  The control device 16 is connected to the motor 51 and the detection device 14 through a signal line. The control device 16 is configured to be able to control the motor 51 based on the pressure and flow rate detected by the detection device 14.

  The pump cover is fixed on the base 11 with a clamp or a screw. The pump cover covers components on the base 11.

  According to the water supply device 1 configured as described above, the priming port structure 33 can perform priming from the priming port 41 by removing the plug 44 when priming. Further, the priming port structure 33 loosens the plug 44 so that one main surface of the plug 44 is located within the range from the seating surface 41b to the upper end of the wall portion 42, as shown by an arrow in FIG. A flow path is formed between the male screw portion 44 b of the plug 44 and the female screw portion 41 a of the priming port 41, and between one main surface of the base portion 44 a of the plug 44 and the seat surface 41 b of the priming port 41. The priming port structure 33 can exhaust the air in the self-priming chamber 23 through the flow path.

  Further, the wall 42 provided around the priming port 41 prevents water that has passed through the flow path when the self-priming chamber 23 is exhausted from being scattered around the priming port 41, and through the slit 42a. Discharge to the outside. Moreover, the priming port structure 33 can move the water discharged | emitted from the slit 42a on the outer peripheral surface of the flange member 25 by arrange | positioning the slit 42a toward the flange member 25 fixed to the suction pipe 21. It becomes possible. Thereby, the water drops along the inclined surface of the outer peripheral surface of the flange member 25 and moves onto the base 11. Moreover, the water which moved to the base 11 is discharged | emitted on the installation surface from the drain hole 11a. Thus, the water supply apparatus 1 does not scatter the water discharged from the priming port 41 during exhaust. In addition, the water supply device 1 can guide the water discharged from the slit 42a to the drain hole 11a, and the water does not collect on the base 11, the casing 12, the suction pipe 21 and the like, and is drained to the installation surface. It becomes possible.

  Further, by providing the base 44a with a seal groove 44e for providing a seal member 44d for sealing between the seating surface 41b of the priming port 41 and the base 44a of the plug 44, even when pressure is applied to the seal member 44d during exhaust. The omission of the seal groove 44e can be prevented.

  Further, the outer diameter of the base portion 44a of the plug 44 is smaller than the inner diameter of the wall portion 42 and larger than the outer diameter of the seating surface 41b and the inner diameter of the groove portion 43, so that the priming port 41 is provided during exhaust. It becomes possible to guide the water discharged from the side and downward.

  Furthermore, the plug 44 can be easily opened and closed by adopting a structure in which the handle 44c of the plug 44 protrudes from the upper end of the wall 42 in a state where the height of the wall 42 is fixed to the priming port 41. It becomes possible.

  As described above, according to the water supply device 1 according to the embodiment of the present invention, the wall portion 42 having the slit 42 a is provided around the priming port 41, so that the wall portion 42 allows water to be discharged from the priming port 41 during exhaust. Can be prevented from scattering. Moreover, according to the water supply apparatus 1, it becomes possible to guide the discharge direction of the water discharged from the priming port 41 by the slit 42a.

  In addition, this invention is not limited to the structure of the said embodiment. For example, in the above-described example, the plug 44 has a configuration in which the base portion 44a is in contact with the seating surface 41b of the priming port 41, and the outer diameter of the base portion 44a is smaller than the inner diameter of the wall portion 42, but is not limited thereto. .

  For example, as shown in FIG. 8, the plug 44A used in the priming port structure 33 of the water supply apparatus 1 according to another embodiment of the present invention has a cover portion 44f covering the wall portion 42 as the other main surface side of the base portion 44a. The structure may be included. By using such a plug 44A, the priming port structure 33 further prevents scattering of water discharged from the priming port 41 at the time of exhausting by covering the upper end of the wall portion 42 with the cover portion 44f. Water can be discharged from 42a. In addition, various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Water supply apparatus, 11 ... Base, 11a ... Drain hole, 12 ... Casing, 13 ... Pump part, 14 ... Detection apparatus, 15 ... Accumulator, 16 ... Control apparatus, 21 ... Suction pipe line, 21a ... Flange part, 22 ... Pump casing, 23 ... self-priming chamber, 24 ... discharge line, 24a ... flange, 25 ... flange member, 25a ... mouth, 31 ... lower self-priming chamber, 32 ... upper self-priming chamber, 32a ... upper surface, 33 ... Priming port structure, 34 ... mounting portion, 41 ... priming port, 41a ... female screw portion, 41b ... seat surface, 42 ... wall portion, 42a ... slit, 43 ... groove portion, 44, 44A ... plug, 44a ... base portion, 44b ... Male screw part, 44c ... handle part, 44d ... seal member, 44e ... seal groove, 44f ... cover part, 51 ... motor, 99 ... fastening member, 100 ... piping.

Claims (10)

A priming port provided on the upper surface of the self-priming chamber;
A cylindrical wall provided around the priming port and having a slit extending in the axial direction in a part thereof;
A plug provided in the priming port;
A priming structure characterized by comprising:   The said plug is provided with the disk-shaped base part, the seal groove provided in one main surface of the said base part, and the sealing member provided in the said seal groove. Callout structure.   The priming mouth structure according to claim 2, wherein an outer diameter of the base portion is configured to be smaller than an inner diameter of the wall portion. The plug has a handle on the other main surface of the base,
3. The priming structure according to claim 2, wherein the wall has a height such that an upper end of the wall is positioned below the handle when the plug closes the priming. Base and
A casing provided on the base;
A self-priming chamber provided in the casing;
A priming port provided on the upper surface of the self-priming chamber; a cylindrical wall portion provided around the priming port and having a slit extending in an axial direction at a part thereof; and a plug provided on the priming port. Priming structure,
A water supply apparatus comprising:   The said plug is provided with the disk-shaped base part, the seal groove provided in one main surface of the said base part, and the seal member provided in the said seal groove. Water supply device.   The water supply apparatus according to claim 6, wherein an outer diameter of the base portion is configured to be smaller than an inner diameter of the wall portion. The plug has a handle on the other main surface of the base,
The water supply device according to claim 6, wherein the wall portion has a height such that an upper end of the wall portion is located below the handle portion when the plug closes the priming port. The casing has a suction line;
The suction pipe is provided with a diamond-shaped flange member at an end,
The water supply device according to claim 5, wherein the slit is disposed in the wall portion toward the flange member.   The water supply device according to claim 9, wherein the base has a drainage hole provided adjacent to the flange member of the suction pipe.