JP2002332998A - Pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump device for which a vibration preventive measure can be taken without requiring troublesome work. SOLUTION: In the pump device, a vibration preventive function part 22 is attached to a pump base 1 when the pump shipped. Therefore, the vibration preventive measure can be taken for the pump device only with an ordinary pump device setting work such as installing the pump base 1 on which a pump unit 5 is assembled on a setting place A, and the pump device with vibration preventive function can be set without troublesome work such as setting a conventional vibration preventive rack.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump device in which pump vibration of the pump device is not transmitted to a place where the pump device is installed, such as a fixed base.

[0002]

2. Description of the Related Art A pump device used for supplying water to an apartment, an apartment, or the like employs a structure in which a pump unit is mounted on a pump base.

[0003] The pump unit is constituted by combining a pump section driven by an electric motor, various valves, piping and the like.

[0004] Incidentally, the pump unit is operated by driving the pump unit with an electric motor, so that vibration is likely to occur. This vibration is suppressed by reviewing each part of the pump unit. However, the occurrence of vibration is still unavoidable, and the vibration of the pump is transmitted through the anchor of the pump base to the place where the pump device is installed (fixed base, etc.). ).

[0005] For this reason, when the place where the pump device is installed does not like vibration, a countermeasure against vibration is separately taken.

Conventionally, a frame-shaped anti-vibration pedestal specializing only in anti-vibration is purchased separately from the pump device, and this anti-vibration pedestal is
A crane is used to install a pump device on an installation place at a site, and after the installation, a pump device is installed on the anti-vibration gantry.

[0007]

However, since the vibration isolating gantry is a large and heavy component, when installing the pump device, it is necessary to install the pump device on the installation site using a crane or a lot of manual work. The work of installing the pump device on the installed vibration isolator is required, and the work until the installation of the pump device is completed is troublesome.

Further, since the vibration isolating gantry is manufactured according to the entire pump device, it is considerably expensive. For this reason,
Especially in places other than those where noise and vibration are disliked, there was a situation where the anti-vibration pedestal was unacceptable. The present invention has been made by paying attention to the above circumstances, and its first object is to require cumbersome work. This makes it possible to install a pump device with anti-vibration measures.

Another object of the present invention is to provide an inexpensive structure for vibration isolation in addition to the above object.

[0010]

In order to achieve the first object, the invention described in claim 1 has a structure in which an anti-vibration function is attached to a pump base from the time of shipment of the pump. .

[0011] With this, vibration isolation measures are taken only by the installation work of the pump device in which the pump base is installed in the installation place, so that a cumbersome operation such as separately installing an anti-vibration gantry is not required. In addition, a pump device with a vibration isolation function can be installed.

According to a second aspect of the present invention, in order to achieve the second object, the vibration isolating function part is provided below the base mounting surface formed on the pump base instead of the base mounting surface. A low-cost structure is realized in which a plurality of band-shaped base members are arranged, and a plurality of vibration absorbers for absorbing vibration are interposed between the base members and the base installation surface.

According to the third aspect of the present invention, in addition to the above object, the same vibration absorber is used in consideration of the position of the center of gravity of the pump device so that each vibration absorber can exhibit a good vibration damping effect. In this case, a configuration was adopted in which the number of vibration absorbers arranged on the base installation surface was varied depending on the position of the center of gravity of the pump device.

According to the fourth aspect of the present invention, when a vibration absorber having a different spring constant is used, the spring constant of the vibration absorber disposed on the base installation surface is selectively used according to the position of the center of gravity of the pump device. The configuration was adopted.

According to a fifth aspect of the present invention, a rubber pad is provided in which a coil spring is embedded in a rubber member, and both ends of the coil spring are used as contact seats so that a higher vibration damping effect is ensured. Was used.

According to a sixth aspect of the present invention, the pump device is provided between the base member and the base installation surface to prevent the pump device from overturning so that the pump device does not overturn due to an earthquake or the like. Tools were provided.

The invention described in claim 7 is simpler,
A bolt with one end attached to the base member, the other end extending through the vibration absorber and the base installation surface, and a nut screwed into the penetrating end as a fall prevention device so that a fall prevention device with a compact structure is sufficient. A member was used.

[0018] The invention described in claim 8 is configured to include means for starting at a predetermined discharge head or less and stopping at a predetermined flow rate or less so as to be particularly suitable for a pump device requiring vibration isolation. It was adopted for the pump device having the supplied water supply pump unit.

The invention described in claim 9 is employed in a pump apparatus having means for operating the discharge head of the pump section driven by the electric motor at a predetermined target pressure to be constant.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on a first embodiment shown in FIGS.

FIGS. 1A to 1C show a pump device, for example, a water supply pump device. In FIG. 1, reference numeral 1 denotes a pump base.

The pump base 1 is formed in a flat plate shape by bending both edges of a rectangular steel plate into a crank shape.
Thus, a pair of base installation surfaces 2 that are elongated in the left-right direction are formed at both edges of the pump base 1, and the device installation surfaces 3 are formed at other flat portions (between the base installation surfaces 2). . The reinforcing member 4 is attached to the back surface of the flat portion.

On the equipment installation surface 3 of the pump base 1,
Pump unit, for example, a water supply pump unit 5 for supplying water
Is installed.

As the water supply pump unit 5, for example, a unit having two (a pair) of pumps 6 provided with pipes therebetween and a vertical control panel 17 is used.

Specifically, as the pump 6, a pump in which an output shaft of the electric motor 7 is directly connected to an impeller (not shown) of the pump unit 8, that is, a pump of an electric motor direct drive type is used.
Two pumps 6 are installed on both left and right sides of the device installation surface 3a so that the suction port 8a of the pump section 8 is directed forward and the discharge port 8b is directed upward. The discharge port 8b of each pump 6 is
Pump 6 through elbow 9, check valve 10, and tee 11
6 are connected so as to gather at a header discharge port 12 arranged between them. Thus, when the pump 6 operates, the suction port 8a
For example, water in a water receiving side, for example, a water receiving tank (not shown) is sucked and discharged from the header discharge port 12 to a water supply pipe (both not shown) connected to the faucet.
An accumulator 13 for assisting water supply is provided between the pumps 6 and 6. A flow sensor 1 for detecting a discharge flow rate is provided on the discharge side of each of the pumps 6 and 6 in the pipe section.
4 (corresponding to a flow rate detecting means), and a pressure sensor 15 (corresponding to a pressure detecting means) for detecting the discharge pressure of the header discharge port 12 is mounted on the discharge side.

Adjacent to the pumps 6, 6, the control panel 17 is provided at the most end of the equipment installation surface 3, for example, at the left end.
However, it is installed via the bracket 18 in a posture in which the front faces the end side. In the control panel 17, a control unit 19 composed of, for example, a microcomputer is stored. The control unit 19 is connected to the flow sensor 14 and the pressure sensor 15. In this control unit 19, a discharge head and a flow rate for starting and stopping are set in advance, and the pump 6 is started when the discharge pressure detected by the pressure sensor 15 is equal to or less than the set discharge head, and detected by the flow sensor 14. The pump 6 is stopped when the discharged flow rate is equal to or less than the set flow rate. The control panel 17 also houses an inverter 20 (corresponding to a variable speed drive unit) that varies the power supply frequency of the electric motor 7 of each of the pumps 6 and 6. The inverter 20 is connected to the control unit 1
9. The control unit 19 controls the inverter 20 so that the discharge head is kept constant at a preset target pressure.
Is set, and the required water supply capacity is ensured by the variable speed control of the pump 6 performed by the inverter 20.

On the other hand, an anti-vibration function unit 22 is assembled to the pump base 1 of the pump device from the time when the pump device is shipped from a factory (when the pump is shipped).

In order to simplify the structure, the vibration-proofing section 22 has a structure in which a rail-shaped vibration-proofing base 23 that replaces the mounting surface 2 is attached to the lower side of each base mounting surface 2 of the pump base 1. Used.

More specifically, as shown in FIGS. 2A and 2B, the anti-vibration base 23 is arranged below the base mounting surfaces 2 along with the mounting surfaces 2 when the pump is shipped. And a plurality of vibration absorbers 25 (absorbing vibrations) interposed between the gantry 2 and the base installation surface 2. ing. Then, the gantry 2 is installed at an installation location A such as a fixed base (by an anchor bolt (not shown)), and the pump device is damped by the vibration absorbing performance of the vibration absorber 25.

More specifically, a component having high vibration-absorbing ability, specifically, a coil spring 26 as shown in FIGS. 3A and 3B is embedded in the rubber A rubber pad having a cylindrical portion having contact seats 28 formed at both ends of a spring 26 is used. In the present embodiment, a plurality of, for example, four such cylindrical portions are arranged in parallel, and a square disk-shaped rubber pad is used in which the middle portions are connected to each other by plate-shaped portions to ensure high vibration isolation performance. A plurality of rubber pads (having the same spring constant) having the same structure are placed between the gantry 2 and the base mounting surface 2 at predetermined intervals with a vertical posture with the contact seat 28 turned up and down. I have.
The rubber pad is incorporated using the gantry 2 and the fall prevention device 29 so as not to be detached.

More specifically, the pedestal 2 is provided with a plate material, for example, a band plate having a U-shaped cross section to surround a rectangular outer portion at the middle stage of the rubber pad from both the left and right sides so that the movement of the rubber pad in the left, right, front and rear directions is restricted. A member is used. In addition, at each point of the base installation surface 2 where the rubber pad is disposed, four contact seats 28 are arranged from both sides, here, front and rear sides (sides facing the longitudinal direction of the gantry 2), for example, a U-shaped cross section. Of the gantry 2 and the plate 30
Thus, the front, rear, left and right directions of the rubber pad are regulated.

2 (a) and 2 (b)
As shown in FIG. 1, a bolt member 31 is used in which a base end is attached by welding and implanted on the inner surfaces of both ends of the gantry 1 respectively. Specifically, the bolt member 31 has a length that penetrates the base installation surface 2. 2a indicates the through hole. The nuts 33a and 33b are sequentially screwed into the bolt member 31 through a rubber washer 32.
The nuts 33a and 33b regulate the remaining rubber pad in the vertical direction, and the rubber pad is assembled to the pump device.

Thus, the rubber pad is assembled so as not to be detached from the pump device. And this rubber pad
When the pump device is installed at the installation location A, each contact seat 2
Numeral 8 is elastically contacted with the gantry 2 and the base installation surface 2, and absorbs pump vibrations from the pump device due to the vibration absorbing performance of the rubber pad, thereby suppressing transmission to the pump device installation location A such as a fixed base. . Of course, bolt member 3
No. 1 regulates the movement of the pump device so that the pump device does not fall over even if the rubber pad is shaken by an earthquake or the like. In particular, the bolt member 31 has the structure shown in FIG.
As shown in (b), the bolt member 31 is passed through a structure attached to a point passing through a through hole 34 formed in the center of the rubber pad, specifically, only two rubber pads at the left and right ends. The structure is adopted to save space.

In consideration of the position of the center of gravity of the pump device, the rubber pad is also devised to exhibit a high vibration-proof effect. Specifically, in a pump device whose center of gravity is shifted toward the piping side by a piping member or valve assembled as shown in FIG. 1, the number of rubber pads disposed between the base installation surface 2 on the piping side and the gantry 24 is determined. Are set to four, and the number of rubber pads arranged between the base installation surface 2 on the opposite electric motor 7 side and the gantry 24 is set to two. That is, the amount of the side where the weight increases due to the shift of the center of gravity is increased, and the number of the side where the weight decreases on the opposite side is reduced (when the same rubber pad is used), so that suitable vibration isolation is performed. Of course, the rubber pads are all arranged at appropriate intervals.

In the case of such a pump device provided with a vibration isolating function from the time of shipment of the pump, the gantry 2 which replaces the base installation surface 2 of the pump device is usually used in the same manner as the pump device installation work.
4 is mounted on the installation surface of the installation location A while matching the anchor through holes 24a formed on both ends of the gantry 24 with the anchor bolts (not shown) projecting from the installation location A. Then, if a work such as screwing a nut (not shown) into the end of the anchor bolt is performed, and the pump device is installed at the installation location A, the vibration isolator 22 can be installed together.

Thus, the vibration of the pump, which tends to be transmitted to the installation location A during the operation of the pump device, is reduced by the vibration isolator 2.
2 is suppressed by each rubber pad (vibration absorber 25) and transmitted from the installation location A.

Therefore, it is possible to install a pump device having an anti-vibration function without requiring a troublesome operation such as when installing the anti-vibration gantry. In particular, the discharge head of the pump unit or the pump unit 8 to which the pump unit that starts and stops at the set discharge head or less and that stops at or below the set flow rate where vibration prevention is highly required is constantly operated at a preset target pressure. This is suitable for a pump device in which a pump unit to be assembled is assembled. Of course, the present invention is also suitable for a pump device in which a pump unit that performs both controls as in the present embodiment is assembled.

Further, in the vibration-proof structure, a rail-shaped gantry 24 is arranged below the base installation surface 2 of the pump base 1, and a plurality of vibration absorbers 25 are interposed between the gantry 2 and the base installation surface 2. Because it is mounted, it is simple and the cost burden is light.

In addition, in consideration of the position of the center of gravity of the pump device, an anti-vibration structure in which the number of vibration absorbers 25 installed on each base installation surface 2 is changed is adopted. In each case, a good anti-vibration effect is exhibited, and high anti-vibration performance matched to the pump device is secured.

In addition, since a fall prevention device 29 is provided between the gantry 24 and the base installation surface 2, the vibration absorber 25 is
Even if the pump device 1 is greatly shaken by vibrations due to an earthquake or the like, there is no possibility that the pump device 1 falls. Moreover, since the bolt member 31 planted on the gantry 24 is used for the overturn prevention device 9, the structure is simple. In addition, since the bolt member 31 has a structure penetrating the vibration absorber 25, the tipping prevention device 9 is compact.

Further, since a rubber mat having a structure in which a coil spring 26 is embedded in a rubber member 27 is employed as the vibration absorber 25, the base mounting surface 2 and the gantry 2 are small parts.
4, a sufficient vibration absorption performance can be obtained even in a narrow region, and a high vibration isolation effect can be secured.

FIGS. 4A to 4C show a second embodiment of the present invention.

In the present embodiment, instead of using vibration absorbers (rubber pads) having the same spring constant, vibration absorbers (rubber pads) having different spring constants are used, and the vibration isolation performance matching the change in the center of gravity of the pump device is improved. It is intended to be demonstrated.

In this case, for example, the number of vibration absorbers 25 (rubber pads) for each base installation surface 2 is set to be the same, and the vibration absorber 25 on the pipe side where the center of gravity is shifted (the side where the weight increases due to the shift of the center of gravity position). In this case, a vibration absorber having a high spring constant is used, or a vibration absorber having a low spring constant is used on the opposite side of the electric motor 7 (the side where the weight increases due to the displacement of the center of gravity). In the present embodiment, as the vibration absorber 25 on the pipe side, a vibration absorber having a spring constant twice that of the vibration absorber 25 on the electric motor 7 side is used.

The other parts are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals as in the first embodiment, and the description thereof is omitted.

The present invention is not limited to the above-described embodiment, but may be implemented with various modifications without departing from the gist of the present invention. For example, in the above-described embodiment, the present invention is applied to the pump base 1 having two (plural) base installation surfaces 2. However, the present invention is not limited to this, and a pump base having three or four base installation surfaces is also applicable.
The present invention may be applied. In this case, it goes without saying that the number of the gantry 2 and the vibration absorber 25 increases in accordance with the increased number of base installation surfaces. Of course, the present invention may be applied to a pump device in which a pump unit other than the water supply pump unit is mounted on the pump base.

[0047]

As described above, according to the first aspect of the present invention, since the pump base is provided with the anti-vibration function section from the time of shipping the pump, it can be used as in the case where the conventional anti-vibration base is installed. A pump device with anti-vibration measures can be installed without requiring cumbersome work.

According to the second aspect of the present invention, there is an effect that vibration can be prevented with a more inexpensive structure.

According to the third and fourth aspects of the present invention, it is possible to provide an advantageous effect that each of the vibration absorbers can exhibit a good vibration proof effect in consideration of the position of the center of gravity of the pump device.

According to the fifth aspect of the present invention, there is an effect that a high vibration-proof effect can be ensured while using smaller components.

According to the sixth aspect of the present invention, the pump device can be prevented from falling down due to an earthquake or the like.

According to the seventh aspect of the present invention, it is possible to achieve an effect that a fall prevention device having a simpler structure can be used and the device can be compact.

According to the eighth and ninth aspects of the present invention, a sufficient vibration damping effect can be exerted more easily in a pump device requiring vibration damping.

[Brief description of the drawings]

FIG. 1A is a plan view of a pump device according to a first embodiment of the present invention. (B) is a front view similarly. (C)
FIG.

FIG. 2 is a perspective view illustrating a structure of a vibration-proof function unit assembled to a pump base of the pump device.

FIG. 3A is a plan view of a vibration absorber constituting the vibration isolating function unit. (B) is a partial cross-sectional front view.

FIG. 4A is a plan view of a pump device according to a second embodiment of the present invention. (B) is a front view similarly. (C)
FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pump base 2 ... Base installation surface 5 ... Water supply pump unit (pump unit) 6 ... Pump 7 ... Electric motor 8 ... Pump part 14 ... Flow rate sensor (flow rate detecting means) 15 ... Pressure sensor (pressure detecting means) 19 ... Control part DESCRIPTION OF SYMBOLS 20 ... Inverter (variable speed drive means) 22 ... Vibration-proof function part 24 ... Strip-plate-like base (base member) 25 ... Vibration absorber 26 ... Coil spring 27 ... Rubber member 28 ... Contact seat 29 ... Fall-over prevention tool 31 ... Bolt Members 33a, 33b ... nuts.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasushi Shima 1 Oyorita, Hashime-cho, Okazaki-shi, Aichi Pref.

Claims (9)

[Claims] 1. A pump base comprising: a pump base; and a pump unit assembled to the pump base. The pump base is provided with an anti-vibration function unit for suppressing propagation of pump vibration from the time of shipping the pump. A pump device, comprising: 2. The pump device according to claim 1, wherein the vibration-damping function portion is provided below a base installation surface formed on the pump base, and is a strip-shaped base member that replaces the base installation surface. Wherein a plurality of vibration absorbers for absorbing vibration are interposed between the base member and the base installation surface. 3. The pump device according to claim 2, wherein
A pump device wherein the same vibration absorber is used as the vibration absorber, and the number of vibration absorbers arranged on each base member is made different depending on the position of the center of gravity of the pump device. 4. The pump device according to claim 2, wherein a vibration absorber having a different spring constant is used as the vibration absorber.
A pump device wherein spring constants of vibration absorbers arranged on each base member are properly used according to the position of the center of gravity of the pump device. 5. The pump device according to claim 2, wherein the vibration absorber has a coil spring embedded in a rubber member, and contact seats respectively in contact with the base member and the base installation surface at both ends of the coil spring. A pump device comprising a rubber pad formed. 6. The pump device according to claim 2, wherein a fall prevention device for suppressing a fall of the pump device is provided between the base member and the base installation surface. Pumping equipment. 7. The pump device according to claim 6, wherein one end of the tipping-over prevention member is attached to the base member, and the other end penetrates the vibration absorber and the base installation surface. A pump device comprising a bolt member into which a nut is screwed. 8. The pump device according to claim 1, wherein the pump unit starts at a pressure lower than a preset discharge head, a pressure detector for detecting a discharge pressure, a flow detector for detecting a discharge flow rate. A water supply pump unit configured to have means for stopping the flow at a predetermined flow rate or less. 9. The pump device according to claim 1, wherein the pump unit has a pump unit and an electric motor that drives the pump unit, and further includes a variable speed driving unit that operates the electric motor at a variable speed. Means for controlling the variable speed driving means to operate the discharge head of the pump section at a predetermined target pressure at a constant level.