KR100764855B1 - Automatic pump - Google Patents

Abstract

An automatic pump is provided to cut down a cost by allowing a valve guide to be separated from a discharge pipe to replace a valve. In an automatic pump, an inlet pipe and a discharge pipe are formed at a body(110) integrally. A valve seat(150) and a valve guide(160) are installed apart from each other inside the discharge pipe. Both sides of a valve(140) are supported to the valve seat and the valve guide and linearly moved to connect and disconnect an inlet pipe side and a discharge pipe side. The valve and the valve guide are provided with a unit for indicating a combining position of the valve and preventing rotation of the valve.

Description

Automatic Pump {AUTOMATIC PUMP}

1 is a cross-sectional view of a conventional automatic pump.

2 is a cross-sectional view of an automatic pump according to an embodiment of the present invention.

3 is a plan sectional view of the valve portion shown in FIG. 2;

4 is an exploded perspective view of the valve seat, gasket, valve, spring and valve guide shown in FIG.

Explanation of symbols on the main parts of the drawings

110: main body 120: motor

125 impeller 130 pressure tank

135: pressure switch 140: valve

150: valve seat 160: valve guide

170: magnet 175: reed switch

181: through bar 185: marking hole

190: elastic member 200: control unit

The present invention relates to an automatic pump that improves the structure of a valve communicating / blocking a flow path while performing a straight reciprocating motion by a pressure difference depending on the presence / absence of fluid movement.

A pump is a device for transporting a fluid by the driving of a motor, and an automatic pump is a device for automatically controlling the movement of fluid flowing in and out.

A conventional automatic pump will be described with reference to FIG. 1. 1 is a view showing a schematic configuration of a conventional automatic pump.

As shown, a main body 11 having a first casing 12 and a second casing 13 which are coupled to each other to form a flow path of a fluid is provided. The inlet 12a and the outlet 12b are formed at one side and the other side of the first casing 12, and the impeller 21 is embedded therein. In addition, a first valve 31 is installed inside the second casing 13 adjacent to the inlet 12a and prevents a backflow of the fluid, and inside the second casing 13 adjacent to the outlet 12b. A second valve 35 is provided to block / communicate the inlet 12a side and the outlet 12b side.

Thus, in the state where there is no movement of the fluid, the inlet 12a side and the outlet 12b side are blocked by the first valve 31 and the second valve 35 lowered by their own weight. Then, when the faucet at the place of use is opened, the fluid is discharged through the discharge port 12b, so that the pressure at the discharge port 12b side and the pressure tank 41 decreases. At this time, if the pressure of the pressure tank 41 sensed by the pressure switch 45 is less than a predetermined, the pressure switch 45 is turned on (On), and when the pressure switch 45 is turned on, the controller 51 controls the motor 25. ) To rotate the impeller 21.

Then, the fluid at the inlet 12a side moves to the outlet 12b side by the impeller 21, and the first valve 31 and the second valve 35 are raised by the pressure difference caused by the movement of the fluid. Thus, the inlet 12a side and the outlet 12b side communicate with each other. Then, as the second valve 35 rises, the magnet 36 installed in the second valve 35 rises to turn on the reed switch 55.

Then, when the said faucet is locked, the pressure of the discharge port 12b side and the pressure tank 41 gradually rises. At this time, if the pressure of the pressure tank 41 is more than a predetermined pressure switch 45 is turned off (Off). When the pressures of the inlet 12a side, the outlet 12b side, and the pressure tank 41 become equal, the first valve 31 and the second valve 35 are lowered by their own weight, and the inlet 12a side And the discharge port 12b side are cut off. As the second valve 35 descends, the magnet 36 installed in the second valve 35 descends to turn off the reed switch 55, and when the reed switch 55 is off, the controller 51. ) Stops the motor 25. When there is no movement of the fluid due to the stop of the motor 25, the back flow of the fluid is prevented by the first valve 31.

The conventional automatic pump configured as described above does not completely block the inlet 12a side and the outlet 12b side of the second valve 35. As a result, since the first valve 31 that prevents the reverse flow must be provided separately, the structure is complicated and the cost increases. Further, since the lowering of the first valve 31 and the second valve 35 is made by its own weight, there is a disadvantage in that the installation direction of the pump is restricted.

"Automatic pump" that solves the above disadvantages is disclosed in Korean Patent Application No. 2005-3818 filed by the present applicant.

However, the "auto pump" is provided with a discharge pipe 113 in which the valve 150 is provided separately from the main body 110, and thus assembled in the main body 110.

In addition, since the valve 150 can not be separated and replaced from the discharge pipe 113 due to its structure, the cost increases further.

The present invention was created to solve the problems of the prior art as described above, an object of the present invention to provide an automatic pump that can reduce the cost.

Automatic pump according to the present invention for achieving the above object, the predetermined space is formed inside and the one side and the other side the main body in communication with the inlet pipe and discharge pipe; An impeller installed inside the main body to forcibly transfer the fluid on the inflow pipe side to the discharge pipe side; A motor installed outside the main body to rotate the impeller; A valve which is installed inside the discharge pipe so as to be capable of linear reciprocation and blocks / communicates the inflow pipe side and the discharge pipe side; A magnet installed in the valve and moving in the same manner as the valve; A pressure tank installed outside the main body and in communication with the discharge pipe; A pressure switch installed at the other side of the main body to sense the pressure of the main body; A reed switch installed on the outside of the main body and turned on / off according to a distance from the magnet; In the automatic pump provided on the outside of the main body having a control unit for driving the motor when the pressure of the pressure tank is less than a predetermined or the reed switch is on, and stops the motor when the reed switch is off,

The inlet tube and the discharge tube are integrally formed with the main body, and a valve seat and a valve guide are installed in the discharge tube to be spaced apart from each other by a predetermined distance, and one side and the other side of the valve are the valve seat and the valve guide. It is supported by the linear reciprocating movement in contact with the valve seat / non-contact to block / communicate the inlet pipe side and the discharge pipe side, the valve and the valve guide to indicate the coupling position of the valve and at the same time rotating the valve Means are provided to prevent this.

Hereinafter, with reference to the accompanying drawings will be described in detail an automatic pump according to an embodiment of the present invention.

2 is a cross-sectional view of the automatic pump according to an embodiment of the present invention, FIG. 3 is a plan sectional view of the valve portion shown in FIG. 2, and FIG. 4 is a valve seat, a gasket, a valve, a spring and a valve shown in FIG. An exploded perspective view of the guide.

As shown, the automatic pump according to the present embodiment has a main body 110 formed in a predetermined space therein. One side of the main body 110 is provided with an inlet pipe 111 in communication with the water source side and a discharge tube 113 in communication with the faucet side in use, respectively, the inlet tube 111 and the discharge tube 113. Is integrally formed with the body 110.

Inside the main body 110 is installed an impeller 125 for forcibly transferring the fluid on the inlet pipe 111 side to the discharge pipe 113 side, while the motor 120 for rotating the impeller 125 is installed on the outside. Is installed.

And, the pressure tank 130 in communication with the discharge pipe 113 side is installed on one side of the main body 110, the pressure switch 135 for sensing the pressure inside the main body 110 on the other side of the main body 110 Is installed. The pressure switch 135 is connected to the control unit 200. When the pressure inside the main body 110 detected by the pressure switch 135 is less than or equal to the predetermined value, the impeller 125 is driven by driving the motor 120. Rotate

Inside the discharge pipe 113, a valve for communicating / blocking the inlet pipe 111 side and the discharge pipe 113 side while linearly moving by the pressure difference according to whether or not the fluid moves by the impeller 125 in rotation. 140 is installed.

The valve seat 150 and the valve guide 160 spaced apart from each other by a predetermined distance are installed in the discharge pipe 113, and the valve 140 may be linearly reciprocated between the valve seat 150 and the valve guide 160. Is installed. Thus, as the valve 140 linearly reciprocates, the inlet pipe 111 side and the discharge pipe 113 side are blocked / communicated while being in contact / non-contact with one side of the valve seat 150.

The structures of the valve 140, the valve seat 150, and the valve guide 160 will be described in detail.

The valve seat 150 is a ring-shaped body 151 that is press-fitted into the inner circumferential surface of the discharge pipe 113, ribs 153 and ribs 153 formed on the inner circumferential surface of the body 151 to reinforce the body 151. It has a support hole 155 formed in). At this time, in order to prevent the valve seat 150 from being inserted into the discharge tube 113 more than a predetermined time, an end face 113a is formed on the inner circumferential surface of the discharge tube 113, and the valve is provided at the end face 113a. The other outer surface of the body 151 of the seat 150 is contacted and supported.

In addition, the valve guide 160 is formed on an inner circumferential surface of the ring-shaped body 161 and an inner circumferential surface of the body 161 that are press-fitted to the inner circumferential surface of the end side of the discharge tube 113 to reinforce the body 161. It has the rib 163 and the support hole 165 formed in the rib 163.

The valve 140 is formed in a shape corresponding to the body 151 of the valve seat 150 to be in contact with the outer surface of the body 151 of the valve seat 150 141, the opening and closing plate 141, the opening and closing plate 141 The first and second support bars 143 and 145 which extend from one side and the other side of the bottom surface and are respectively inserted into the support holes 155 of the valve seat 150 and the support holes 165 of the valve guide 160. Have Since the first and second support bars 143 and 145 are inserted and supported by the support holes 155 and 165 of the valve seat 150 and the valve guide 160, the valve 140 stably linearly reciprocates without being twisted.

On the outer circumferential surface of the first support bar 143 spaced a predetermined distance from the opening and closing plate 141, a support plate 147 having an outer diameter smaller than the inner diameter of the body 151 of the valve seat 150 is formed, and the support plate 147 and A gasket 149 is installed between the opening and closing plates 141. The gasket 149 contacts / non-contacts with one outer surface of the body 151 of the valve seat 150 as the valve 140 linearly reciprocates to block / communicate the inlet pipe 111 side and the discharge pipe 113 side. Let's do it. That is, since the rubber gasket 149 is in contact with the body 151 of the valve seat 150, the inlet pipe 111 side and the discharge pipe 113 side are completely blocked.

A contact piece 167 is formed on one outer surface of the body 161 of the valve guide 160 to be in contact with the end face of the discharge tube 113. A fastening hole 167a is formed in the contact piece 167, and a screw (not shown) is fastened to the discharge tube 113 by passing through the fastening hole 167a.

One side of the opening and closing plate 141 of the valve 140 is fixed to the magnet 170 to move in the same manner as the valve 140, one side of the main body 110 according to the distance to the magnet 170 (On) / A reed switch 175 that is turned off is installed. As the reed switch 175 is turned on / off, the controller 200 drives / stops the motor 120, which will be described later.

The reed switch 175 is accurately turned on / off in accordance with the distance of the magnet 170 only when the opposing angle and the distance between the magnet 170 and the reed switch 175 are within a setting range. The reed switch 175 may be installed at a predetermined position at all times since the main body 110 is installed at the outside. However, since the magnet 170 is fixed to the valve 140 and installed inside the discharge tube 113, it is difficult to install the magnet 170 at a predetermined position.

In the valve 140 and the valve guide 160 of the automatic pump according to the present embodiment, in order to ensure that the magnet 170 fixed to the valve 140 is always installed at a predetermined position, the coupling position of the valve 140 is displayed. At the same time, a means for preventing the rotation of the valve 140 is provided.

The means is formed in the through bar 181 formed on the other side of the opening and closing plate 141 of the valve 140 and the rib 163 of the valve guide 160 and the display hole 185 into which the through bar 181 is inserted. Is prepared. In this case, the through bar 181 and the display hole 185 are preferably installed at eccentric portions respectively based on the centers of the opening and closing plate 141 and the rib 163.

In addition, end surfaces 145a and 181a are formed on the second support bar 145, the through bar 181, and the outer circumferential surface, respectively. The outer diameters of the end faces 145a and 181a are larger than the inner diameters of the support hole 165 and the display hole 185, respectively, and contact the rib 163 of the valve guide 160. Then, since the valve 140 does not move toward the valve guide 160 more than a predetermined distance, the valve 140 does not escape to the outside of the discharge pipe 113.

An elastic member 190, such as a spring, is installed between the valve 140 and the valve guide 160, more specifically, between the opening and closing plate 141 and the rib 163, and the elastic member 190 is a valve 140. ) Is elastically supported to the valve seat 150 side, so that the gasket 149 is in close contact with one surface of the body 151 of the valve seat 150. Then, the inflow pipe 111 side and the discharge pipe 113 side are completely blocked.

The operation of the automatic pump according to the present embodiment configured as described above will be described.

In the state where the fluid is not discharged to the use place, since the opening and closing plate 141 of the valve 140 is in contact with the valve seat 150 by the elastic member 190, the inlet pipe 111 side and the discharge pipe 113 side are Is blocked. Then, when the faucet of the place of use is opened, the fluid of the discharge pipe 113 side and the pressure tank 130 is discharged, and the pressure of the discharge pipe 113 side and the main body 110 decreases.

The controller 200 receives the pressure of the main body 110 through the pressure switch 135, and when the pressure of the main body 110 is less than or equal to the predetermined value, the controller 200 drives the motor 120 to rotate the impeller 125.

When the impeller 125 rotates, the fluid at the inlet 111 is forcibly moved to the outlet 113, so that the valve 140 overcomes the elastic force of the elastic member 190 by the pressure difference caused by the movement of the fluid. It moves to the guide 160 side. Then, since the valve 140 and the valve seat 150 are spaced apart, the inflow pipe 111 side and the discharge pipe 113 side communicate with each other, and the fluid at the inflow pipe 111 side is discharged to the discharge pipe 113 side.

Then, the magnet 170 is closer to the reed switch 175 by the movement of the valve 140. If the distance between the magnet 170 and the reed switch 175 is less than a predetermined distance, the reed switch 125 is turned on. On, then the motor 120 continues to be driven.

Then, when the tap is locked, the pressure of the discharge pipe 113 side and the main body 110 rises. When the pressures of the inflow pipe 111 side, the discharge pipe 113 side, and the main body 110 become equal, the valve 140 gradually moves toward the valve seat 150 by the elastic force of the elastic member 170. Return to the original state. Then, the inflow pipe 111 side and the discharge pipe 113 side are blocked, and the valve 140 is elastically supported to the valve seat 150 side by the elastic force of the elastic member 170 so that the fluid at the discharge pipe 113 side Does not flow back to the inlet pipe 111 side.

The distance between the magnet 170 and the reed switch 175 gradually increases due to the movement of the valve 140. When the distance between the magnet 170 and the reed switch 175 is greater than or equal to the predetermined value, the reed switch 175 is turned off. (Off). Then, the control unit 200 stops the motor 120 to stop the impeller 125.

As described above, the automatic pump according to the present invention is formed integrally with the main body and the discharge tube, there is no need for a process for assembling the discharge tube in the main body. Therefore, the cost is reduced.

When the valve guide is separated from the discharge pipe, only the valve can be replaced, further reducing the cost.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

Claims (9)

A main body having a predetermined space formed therein and inlet and outlet tubes communicating with one side and the other side; An impeller installed inside the main body to forcibly transfer the fluid on the inflow pipe side to the discharge pipe side; A motor installed outside the main body to rotate the impeller; A valve which is installed inside the discharge pipe so as to be capable of linear reciprocation and blocks / communicates the inflow pipe side and the discharge pipe side; A magnet installed in the valve and moving in the same manner as the valve; A pressure tank installed outside the main body and in communication with the discharge pipe; A pressure switch installed at the other side of the main body to sense the pressure of the main body; A reed switch installed on the outside of the main body and turned on / off according to a distance from the magnet; In the automatic pump provided on the outside of the main body having a control unit for driving the motor when the pressure of the pressure tank is less than a predetermined or the reed switch is on, and stops the motor when the reed switch is off, The inlet pipe and the discharge pipe are integrally formed with the main body, A valve seat and a valve guide are installed in the discharge pipe at a predetermined distance from each other. The valve is contacted / non-contacted with the valve seat as one side and the other side is supported by the valve seat and the valve guide to linearly reciprocate to block / communicate the inlet tube side and the discharge tube side, And the valve and the valve guide are provided with a means for indicating the engagement position of the valve and preventing the valve from rotating. The method of claim 1, The valve seat and the valve guide are ring-shaped bodies that are press-fitted into one inner peripheral surface of the discharge pipe, respectively, formed on the inner peripheral surfaces of the respective bodies, ribs for reinforcing the respective bodies, and supporting holes formed on the respective ribs, respectively. With each, The valve is formed in a shape corresponding to the body of the valve seat is contacted / non-contacted to one outer surface of the body of the valve seat and extending from the opening and closing plate, the one side and the other side of the opening and closing the magnet is fixed, respectively And a first support bar and a second support bar inserted into the support hole of the valve seat and the support hole of the valve guide, respectively. The method of claim 2, The means is an automatic pump, characterized in that the through-hole formed on the other side of the opening and closing plate and the rib of the valve guide and the display hole into which the through-bar is inserted. The method of claim 3, wherein The through bar and the indicator hole is formed in the center of the eccentric in the center of the rib of the opening and closing plate and the valve guide. The method of claim 3, wherein A cross section is formed on the second support bar, the through bar, and the outer circumferential surface thereof. Cross sections of the second support bar and the through bar are in contact with each other, the non-contact with the rib of the valve guide as the valve reciprocates linearly. The method of claim 2, A support plate having an outer diameter smaller than the inner diameter of the body of the valve seat is formed on the outer peripheral surface of the first support bar spaced apart from the opening and closing plate, Automatic pump, characterized in that between the support plate and the opening and closing plate is provided with a gasket contacting / non-contacting one outer surface of the body of the valve seat. The method of claim 2, The inner circumferential surface of the discharge pipe is characterized in that the automatic pump, characterized in that the other end surface of the body of the valve seat is formed in contact with the end face (段 面). The method of claim 2, A contact piece is formed on one outer surface of the body of the valve guide in contact with the end face of the discharge tube, A fastening hole is formed in the contact piece, The valve guide is an automatic pump, characterized in that coupled to the discharge pipe by a screw fastened to the discharge pipe through the fastening hole. The method according to any one of claims 1 to 8, And an elastic member for elastically supporting the valve to the valve seat side between the valve and the valve guide.

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