KR101861131B1 - Valve with improved sealing performance - Google Patents

Abstract

Provided is a valve with improved sealing performance comprising: a lower housing having an inflow path, a discharge path, a valve sheet formed between the inflow path and the discharge path and vertically opened in the middle, and an opening and closing space part upwardly opened at the upside of the valve sheet; an upper housing joined to an upper portion of the lower housing to seal the opening and closing space part and having a receiving space part formed therein and opened at a lower portion thereof to be connected with the opening and closing space part; a valve stem arranged at the opening and closing space part of the lower housing and the receiving space part of the upper housing and having a male screw formed on the outer circumferential surface of an upper end portion thereof and a head formed at a lower end portion to get in contact with the valve sheet; an internal rotor inserted into the receiving space part of the upper housing to be rotatable and having a female screw formed at the center thereof to be coupled with the male screw; an external rotor joined to the outside of the upper housing to be rotatable; an internal magnet mounted on the internal rotor; and an external magnet mounted to the external rotor to make attraction between the internal magnet and the external magnet. The valve is capable of improving sealing performance by perfectly sealing the inside and the outside of the valve and maintaining the sealing performance without any damage even if used for a long term because rotary power for opening and closing the valve is transferred by the medium of the magnets.

Description

[0001] Valve with improved sealing performance [

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a valve having improved sealing performance, and more particularly, to a valve having an excellent sealing force and capable of maintaining the sealing force of the valve even in long-term use.

In general, a valve equipped with a bellows seal is used in order to prevent leakage of fluid flowing inside the valve.

The bellows chamber installed inside the valve repeats compression and tensioning when the valve is opened and closed. As the operation repeats, fatigue accumulates in the bellows chamber and the fatigue is broken and the valve can not perform its role.

On the other hand, as a prior art for solving such a problem, a "bellows type safety valve" is disclosed in Korean Patent Publication No. 10-1507461. The prior art forms a spiral wrinkle of the bellows tube so that high pressure is applied from the side, or the bellows tube is not easily damaged even after repeated use.

However, the bellows yarn of the structure disclosed in the above-mentioned prior art is also fatigued in the event of repeated use over a long period of time and can not perform its role.

[Patent Document 1] Korean Registered Patent No. 10-1507461 (published on Apr. 201, 2010)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a valve having an excellent sealing force, particularly a valve having an improved sealing force,

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the following description.

According to the present invention, there is provided a valve having improved sealing performance, comprising: an inflow passage and a discharge passage; a valve seat formed between the inflow passage and the discharge passage and vertically opened at the center; housing; An upper housing coupled to an upper portion of the lower housing to close the open / close space and having an accommodating space portion opened downwardly to be connected to the open / close space; A valve stem disposed in the housing space of the lower housing and the housing space of the upper housing, the valve stem having a male screw formed on an outer circumferential surface of an upper end portion and a head formed on a lower end portion in contact with the valve seat; An inner rotating body rotatably inserted into the housing space of the upper housing and having a female screw threadedly engaged with the male thread of the valve stem at the center; An outer rotating body rotatably coupled to the outer side of the upper housing; An inner magnet mounted on the inner rotating body; And an outer magnet mounted on the outer rotor so that a force acts on the inner magnet.

In the embodiment of the present invention, at least two of the inner magnet and the outer magnet are arranged to be equidistantly spaced along the circumference of the inner rotor and the outer rotor.

In the embodiment of the present invention, the inner magnets and the outer magnets are arranged so that the polarities alternate along the circumference of the inner rotor and the outer rotor.

According to an embodiment of the present invention, a vertically extending latching portion is formed on the inner wall of the openable / closable space portion, and a corresponding latching portion is formed on the head of the valve stem to slide up and down in contact with the latching portion.

In the embodiment of the present invention, the valve stem may include a slide portion extending vertically between the male screw and the head, the slide portion having a non-circular cross-section on the outer peripheral surface, And a slide member having a shape corresponding to an outer circumferential surface of the slide portion and having an slide hole into which the slide portion is vertically slidably inserted.

In an embodiment of the present invention, the valve stem may include a slide portion formed on the upper side of the male screw and extending upwardly and projecting upward from the inner rotor, and having a non-circular cross-section on its outer surface, The upper housing is provided with an insertion hole for inserting the slide portion on the upper side of the accommodation space portion. The insertion hole has a shape corresponding to the outer circumferential surface of the slide portion, and has a slide having a slide hole into which the slide portion is slidably inserted Member is mounted.

The valve according to the present invention is capable of completely sealing the inside and the outside of the valve by transmitting the rotational force for opening and closing the valve through the magnet so that the sealing force can be improved and the sealing force There is an effect that can be maintained.

1 is a perspective view of a valve having improved sealing performance according to an embodiment of the present invention;
2 is a sectional view of a valve having improved sealing performance according to an embodiment of the present invention;
3 is a plan sectional view and a side sectional view conceptually showing a structure in which an inner magnet and an outer magnet are arranged in a valve having improved sealing force according to an embodiment of the present invention;
4 is a perspective view showing a rotation preventing means in a valve having improved sealing force according to an embodiment of the present invention.
5 is a sectional view of a valve to which rotation preventing means according to another embodiment of the present invention is applied.
Fig. 6 is an exploded perspective view showing the rotation preventing means shown in Fig. 5; Fig.
7 is a sectional view of a valve to which a rotation preventing means is applied according to another embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of explanation, elements shown in the drawings may be exaggerated, omitted, or schematically represented.

FIG. 1 is a perspective view of a valve having improved sealing performance according to an embodiment of the present invention, and FIG. 2 is a sectional view of a valve having improved sealing force according to an embodiment of the present invention.

1 and 2, the valve having improved sealing performance according to an embodiment of the present invention includes a lower housing 100, an upper housing 200, a valve stem 300, an inner rotating body 400, An entire magnet 500, an inner magnet 600, and an outer magnet 700.

The lower housing 100 is installed in the pipe through which the fluid flows and includes the inflow passage 110 and the discharge passage 120, the valve seat 130, and the opening / closing space portion 140.

The inflow path 110 protrudes laterally from the lower housing 100. The inflow channel 110 is connected to a pipe through which the fluid flows, and provides a passage through which fluid flowing through the pipe can flow into the inside of the valve.

The discharge passage 120 is protruded to the lower side of the lower housing 100. The discharge passage 120 is connected to a pipe through which the fluid flows, and provides a passage for discharging the fluid introduced into the valve.

The positions where the inflow path 110 and the discharge path 120 are formed in the lower housing 100 can be variously changed as needed.

The valve seat 130 provides a place where the head 320 of the valve stem 300 to be described later comes into close contact. The valve seat 130 is vertically opened at the center so that the inflow passage 110 and the discharge passage 120 communicate with each other.

The opening / closing space 140 is formed to open upward on the valve seat 130. Closing space portion 140 provides a space for the head 320 of the valve stem 300 to move up and down.

The upper housing 200 is coupled to the upper portion of the lower housing 100 to close the open / close space 140. The upper housing 200 is formed in a circular cylindrical shape that is opened only downward. Accordingly, the upper housing 200 is formed with a receiving space 210 that is opened downward to be connected to the open / close space 140.

Flanges 160 and 230 are formed on the upper end of the lower housing 100 and the lower end of the upper housing 200 for coupling the lower housing 100 and the upper housing 200 to each other.

The valve stem 300 has an elongated rod shape and is disposed in the openable and closable space 140 of the lower housing 100 and the accommodation space 210 of the upper housing 200. A male screw 310 is formed on the outer circumferential surface of the upper end of the valve stem 300 and a head 320 having a structure having an enlarged sectional area is formed at the lower end of the valve stem 300. When the valve stem 300 is lowered, the head 320 contacts the valve seat 130 of the lower housing 100 to close the valve. The valve stem 300 is installed to prevent rotation in the lower housing 100 and the upper housing 200 by the rotation preventing means. The rotation preventing means will be described later.

The inner rotating body 400 has a circular perimeter and is rotatably inserted into the receiving space 210 of the upper housing 200. A female thread 410 is formed at the center of the inner rotating body 400 to be screwed with the male thread 310 of the valve stem 300. The inner rotating body 400 is screwed to the valve stem 300 so that the inner stem 400 is rotated to move the valve stem 300 up and down.

The inner rotor 400 and the upper housing 200 can be rotated between the inner rotor 400 and the lower housing 100 or between the inner rotor 400 and the upper housing 200, The inner bearing 1000 is interposed. The lower end of the inner rotating body 400 is extended to the inside of the flange 160 of the lower housing 100 and the inner bearing 1000 is disposed outside the lower end of the inner rotating body 400 and the lower end of the lower housing 100, As shown in Fig. The lower housing 100 may include an adapter 170 coupled to the inside of the flange 160 so that the inner bearing 1000 can be stably mounted to the lower housing 100. The adapter 170 provides a place where the outer ring of the inner bearing 1000 is to be mounted. An inward flange 171 is formed at the lower end of the inner circumferential surface of the adapter 170. The adapter 170 is installed such that the inward flange 171 is located close to the lower surface of the inner circumferential body 400, And the like can be prevented from flowing into the inner bearing 1000.

The outer rotating body 500 encloses the upper housing 200 and is rotatably coupled to the outer side of the upper housing 200. The outer rotating body 500 includes a lower body 510 surrounding the upper housing 200 and an upper body 520 coupled to an upper portion of the lower body 510. At this time, a knob 521 for rotating the outer rotating body 500 may be formed on the upper body 520.

An external bearing 1100 is interposed between the outer rotating body 500 and the upper housing 200 so that the outer rotating body 500 can be rotatably coupled to the upper housing 200. At this time, the outer bearing 1100 is located inside the connection part between the lower body 510 and the upper body 520, which constitute the outer rotating body 500.

The inner magnet 600 is mounted on the inner rotating body 400. An inner seating groove 420 is formed in the outer periphery of the inner rotating body 400 so that the inner magnet 600 can be stably inserted into the inner rotating body 400. At this time, the inner rotating body 400 may be provided with an inner magnet 600 inserted in the inner mounting groove 420 and an inner cover 430 surrounding the outer circumference of the inner rotating body 400.

The outer magnet 700 is mounted to the outer rotating body 500 so that an attractive force acts on the inner magnet 600. That is, the inner magnet 600 and the outer magnet 700 facing each other are disposed so that their polarities are opposite to each other.

As a result, the valve according to the embodiment of the present invention is configured such that the rotational force of the outer rotating body 500 can be transmitted to the inner rotating body 400 using the attractive force generated between the inner magnet 600 and the outer magnet 700 do.

An external seating groove 511 is formed in the lower body 510 of the outer rotating body 500 so that the outer magnet 700 can be stably mounted on the outer rotating body 500 do. The external seating groove 511 may be formed on the inner circumference or the outer circumference of the lower body 510, or may be formed so as to pass through the lower body 510 laterally. The external seating groove 511 in which the external magnet 700 is inserted is formed in the outer peripheral edge of the lower body 510 so that the external rotating body 500 is inserted into the external seating groove 511 And an outer cover 530 surrounding the outer periphery of the lower body 510 together with the outer magnet 700. [

3 is a plan sectional view and a side sectional view conceptually showing a structure in which an inner magnet and an outer magnet are arranged in a valve having improved sealing force according to an embodiment of the present invention.

As shown in FIG. 3, the inner magnet 600 and the outer magnet 700 are provided with two or more, respectively, so that a sufficient attractive force can be ensured between the inner magnet 600 and the outer magnet 700, And are spaced apart at regular intervals. At this time, the inner magnet 600 and the outer magnet 700 may be arranged so as to form one layer or two or more layers, respectively, and the number of the inner and outer magnets 600 and 700 arranged in each layer may also be variously changed . As shown in the figure, the inner magnet 600 and the outer magnet 700 are preferably arranged such that the polarities of the inner magnet 600 and the outer magnet 700 are alternately arranged around the inner and outer rotors 400 and 500, respectively. Accordingly, the rotational force of the outer rotating body 500 can be more smoothly transmitted to the inner rotating body 400. When the inner magnet 600 and the outer magnet 700 are provided in the same manner as described above, the inner seating groove 420 and the outer seating groove 511 are also formed by the number of the inner magnets 600 and the number of the outer magnets 700 Two or more are formed.

4 to 7, the anti-rotation means for the valve stem 300 will be described.

4 is a perspective view showing a rotation preventing means in a valve having improved sealing force according to an embodiment of the present invention.

4, the rotation preventing means includes a locking part 150 formed on the inner wall of the opening / closing space part 140 of the lower housing 100, And a corresponding latching part 330 formed on the latching part 320.

The latching part 150 has a vertically extending structure and is integrally formed on the inner wall of the openable and closable space part 140. Alternatively, the latching part 150 may be formed in the form of a plate or rod, and then coupled to the inner wall of the openable / As shown in FIG. The corresponding latching part 330 is formed to be slid up and down in contact with the latching part 150. Closing space portion 140 and the corresponding locking portion 330 is formed to have a flat surface on one side of the head 320 of the valve stem 300. In this case, So that rotation of the valve stem 300 can be prevented by surface contact with the engaging part 150. As shown in FIG. The latching part 150 and the corresponding latching part 330 may be variously modified in addition to the structure shown in the drawings by applying a structure of a key and a keyway.

FIG. 5 is a cross-sectional view of a valve to which the anti-rotation means according to another embodiment of the present invention is applied, and FIG. 6 is an exploded perspective view illustrating the anti-rotation means in FIG.

5 and 6, the anti-rotation means includes a sliding portion 340 formed between the male screw 310 and the head 320 of the valve stem 300, And a slide member 800 mounted on an upper end of the slide member 140.

Here, the slide portion 340 has a vertically extending structure, and the outer peripheral surface is formed to have a non-circular cross-section. Here, the non-circular cross section is a polygonal cross section such as a quadrangle, a hexagon, an octagon, etc., a cross section of a serration axis or a spline shaft, . The slide member 800 is coupled to the lower side of the adapter 170 of the lower housing 100 and has an inner side formed with a slide hole 810 having a shape corresponding to the slide portion 340 and into which the slide portion 340 is inserted do. According to this structure, the slide portion 340 can be slid up and down on the slide hole 810 of the slide member 800, but is prevented from being rotated, so that the valve stem 300 is rotated by the inner rotor 400 Can be prevented from rotating together.

7 is a sectional view of a valve to which the anti-rotation means according to another embodiment of the present invention is applied.

7, the rotation preventing means includes a sliding portion 350 formed on the upper side of the male screw 310 of the valve stem 300, and an insertion hole (not shown) formed on the receiving space portion 210 of the upper housing 200 220 and a slide member 900 mounted on the insertion hole 220.

Here, the slide portion 350 has a vertically extending structure, and the outer peripheral surface has a non-circular cross-section. At this time, the sliding portion 350 is formed on the upper side of the male screw 310 of the valve stem 300 and protrudes upward from the inner rotating body 400. The insertion hole 220 is formed at the upper center of the accommodation space 210 to communicate with the accommodation space 210. A sliding portion 350 protruding upward from the inner rotating body 400 is inserted into the insertion hole 220. The slide member 900 has a ring shape and is mounted in the insertion hole 220. The slide member 900 is formed with a slide hole 910 having a shape corresponding to the slide portion 350 and into which the slide portion 350 is inserted. According to this structure, the sliding portion 350 is vertically slidable on the slide hole 910 of the slide member 900, but is prevented from being rotated, so that the valve stem 300 is rotated by the inner rotor 400 Can be prevented from rotating together.

The valve having improved sealing performance according to an embodiment of the present invention having the above-described structure can transmit the rotational force for opening and closing the valve through the magnet, thereby completely sealing the inside and the outside of the valve, The sealing force can be maintained without being damaged even in long-term use.

While the present invention has been described with reference to the accompanying drawings, it should be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims. And should be construed as falling within the scope of protection of the invention.

100: lower housing 110:
120: exhaust passage 130: valve seat
140: opening / closing space part 150:
160: flange 170: adapter
171: inward flange 200: upper housing
210: receiving space 220: insertion hole
230: flange 300: valve stem
310: male thread 320: head
330: corresponding locking portion 340:
350: sliding part 400: inner rotating body
410: female thread 420: inner seat groove
430: inner cover 500: outer rotating body
510: lower body 511: outer seat groove
520: upper body 521: knob
530: outer cover 600: inner magnet
700: external magnet 800: slide member
810: Sliding member 900: Sliding member
910: Slide bearing 1000: Inner bearing
1100: External bearing

Claims (6)

A valve seat 130 formed between the inflow passage 110 and the discharge passage 120 and vertically opened at the center thereof, A lower housing 100 having an open / close space 140 opened upward;
An upper housing 200 coupled to an upper portion of the lower housing 100 to close the openable and closable space 140 and having an accommodation space 210 opened downward to be connected to the openable and closable space 140, ;
An opening and closing space part 140 of the lower housing 100 and a male screw 310 disposed on the housing space 210 of the upper housing 200 and formed on the outer peripheral surface of the upper end, A valve stem (300) having a head (320) formed at a lower end thereof;
An inner rotating body 400 rotatably inserted into the receiving space 210 of the upper housing 200 and having a female thread 410 screwed into the male thread 310 of the valve stem 300 at the center;
An outer rotating body (500) rotatably coupled to the outer side of the upper housing (200);
An inner magnet 600 mounted on the inner rotating body 400; And
And an outer magnet (700) mounted on the outer rotating body (500) so that a force acts on the inner magnet (600)
The inner magnet 600 and the outer magnet 700 are arranged at equal intervals along the circumference of the inner rotor 400 and the outer rotor 500,
The inner magnet 600 and the outer magnet 700 are arranged such that the polarities of the inner magnet 600 and the outer magnet 700 are alternated along the circumference of the inner rotor 400 and the outer rotor 500,
At least two internal seating grooves 420 into which the respective internal magnets 600 are inserted are formed on an outer periphery of the inner rotor 400,
At least two external seating grooves 511 through which the external magnets 700 are inserted are formed on an outer circumference of the outer rotor 500,
The inner rotating body 400 is provided with an inner cover 430 enclosing the outer circumference of the inner rotating body 400 together with the inner magnets 600 inserted into the inner seating recesses 420,
The outer rotating body 500 is provided with an outer cover 530 which surrounds the outer circumference of the outer rotating body 500 together with the outer magnets 700 inserted into the outer seating recesses 511 Valves with improved sealing performance.
The method according to claim 1,
The opening / closing space 140 has an inner wall formed with a locking part 150 extending vertically,
Wherein the head (320) of the valve stem (300) is formed with a corresponding latching part (330) sliding up and down in contact with the latching part (150).
The method according to claim 1,
The valve stem 300 includes a sliding portion 340 extending vertically between the male screw 310 and the head 320 and having an outer peripheral surface having a non-circular cross section,
The lower housing 100 is provided with an opening at the upper end of the openable and closable space 140 and has a shape corresponding to the outer circumferential surface of the slide part 340, Wherein a sliding member (800) having a cavity (810) is mounted.
The method according to claim 1,
The valve stem 300 is formed on the upper side of the male screw 310 so as to extend upward and downward and protrude upward from the inner rotor 400. The valve stem 300 includes a sliding portion 350 having a non- , ≪ / RTI >
The upper housing 200 is formed with an insertion hole 220 through which the sliding part 350 is inserted,
A slide member 900 having a shape corresponding to the outer circumferential surface of the slide portion 350 and having an insertion hole 910 into which the slide portion 350 is vertically slidably inserted is installed inside the insertion hole 220 Wherein the valve has an improved sealing performance.
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