KR101876982B1 - Bi-directional sheet butterfly valve - Google Patents

Abstract

The present invention relates to a butterfly valve and, more particularly, to a butterfly valve, wherein bidirectional operation and secret maintenance are possible without a sheet. The present invention has the following effects. That is, during rotation for opening a valve, the butterfly valve has no interference between a body and a disc, and difference of powers of opposite side disc blades operated by pressure of fluid in the valve is used so as to bring the disc directly into close contact with the body to close the body, thereby maintaining continuous close contact and secret without using the sheet. In addition, the disc blades and body protruding parts corresponding thereto are designed to have a symmetric structure in a forward/backward direction, thereby enabling a complete bidirectional operation. Furthermore, during the rotation for opening/closing the valve, the valve is prevented from rotating in a direction contrary thereto by a rotation limit module provided in a handle, and during entire closure of the valve, the valve is prevented from rotating in an opening direction but is still enabled to rotate in a closing direction of, thereby performing the continuous transfer of the close contact of the disc blades caused by the pressure of fluid in the valve to the body protruding parts, and when necessary, preventing bidirectional rotation so as to fine-tune the degree of opening of the valve. According to the present invention, there is provided a bidirectional butterfly valve without a sheet, the valve including: a driving part (100) controlling the opening/closing of the valve; an operation part (200) opening/closing a tube line by rotational force transferred from the driving part; the body (310) provided to the tube line and housing the operation part (200).

Description

Bi-directional sheet butterfly valve {omitted}

The present invention relates to a butterfly valve, and more particularly, to a butterfly valve capable of intimate two-way operation and hermeticity without using a seat.

A typical butterfly valve has a simple structure and maintains airtightness by using compression and expansion of the soft seat, so that airtight performance is good. However, due to the deformation and abrasion of the sheet due to the direct contact between the disk and the seat when the valve is opened and closed, the airtightness performance gradually deteriorates with the passage of time, and it is difficult to apply to high pressure due to structural limitations. The performance deterioration and the sheet damage are further accelerated. In addition, periodic maintenance is required due to the durability problem due to the use of the sheet, and there are restrictions on the application depending on the type of fluid, and restrictions on application depending on the temperature.

Another type is an eccentric butterfly valve, which removes friction between the disk and the seat when opening and closing the valve, thereby increasing the service life of the seat and improving airtight performance. However, the eccentric butterfly valve is somewhat complicated in structure and requires high operating torque when the valve is closed, in the case of a parallel travel approach rather than a rotary approach. And because it does not have a symmetrical structure in the flow direction, it is difficult to perform full bidirectional operation, and most eccentric products recommend unidirectional use for efficiency reasons. In addition, it is difficult to apply to high pressure due to the structural limit, maintenance is required according to sheet wear when using for a long time, and there are restrictions on application depending on the type of fluid and application restriction according to temperature.

The metal seat butterfly valve has the advantage of being able to alleviate the restriction of the application range according to the temperature and to prevent secondary accident caused by sheet damage in a high temperature such as a fire. However, the number of parts increases, the structure becomes complicated, and the time and cost for precision machining of the metal sheet occur. Furthermore, in the case of an eccentric butterfly valve employing a metal sheet, the operating torque for opening and closing the valve is increased, and a relatively large actuator (automatic driving device) is required in the construction of the automatic valve.

Registration No. 10-1333817 (November 21, 2013)

Problems to be solved by the present invention are as follows.

That is, there is no contact between the body and the disk during rotation to open and close the valve, a bi-directional seat butterfly valve that maintains constant adhesion and airtight performance without using a seat, I want to present it.

In addition, due to the handle structure capable of restraining one-way or two-way rotation, rotation in the opposite direction is prevented during rotation, and the closing force of the disk can be continuously transmitted to the body protrusion. A bidirectional sheet butterfly valve capable of precisely adjusting the degree of opening of a valve by suppressing both of the valve opening degree and the valve opening degree.

The present invention has been made to solve the above problems

A driving unit (100) for controlling the opening and closing of the valve; An actuating part 200 which receives the rotational force of the driving part 100 and opens and closes the channel; And a body part 300 installed in the pipeline and receiving the operation part 200. The driving part 100 includes a handle 110 for controlling the opening and closing of the valve, And a disc 210 integrally coupled to the stem 260. The disc 210 includes a center column 211 as a rotation axis, A forward disk wing 212 and a reverse disk wing 213 are formed on the base body 300. The body part 300 includes a body 310 that receives the operation part 200. The disk 210 has an XZ plane Directional disk wing 212 that is parallel to the disk 210 and is advanced in the + Y direction relative to the XZ plane passing through the center of the disk 210, and is parallel to the XZ plane in symmetry with the forward disk wing 212, And a reverse disk wing (213) formed by advancing in the -Y direction relative to the XZ plane, and the body (310) When the body 310 is moved along the tangential line contacting the forward disk wing 212 at a position adjacent to the forward disk wing 212 in the + Y direction with the center column 211 as the Z axis and the fluid flow direction as the Y axis, A reverse body protrusion 311 formed to protrude inward of the body 310 along a tangent line contacting the reverse disc wing 213 at a position adjacent to the reverse disc wing 213 at a position adjacent to the reverse disc wing 213 in the- Wherein the forward disk wing 212 is in direct contact with the forward body protrusion 311 and the reverse disk wing 213 is in direct contact with the reverse body protrusion 312, And a fluid flow guide surface 211a connecting the tangential line at which the forward disk wing 212 starts and the tangential line at which the reverse disk wing 213 starts at a plane in the central column 211 of the disk 210 The forward disk wing 212, A tapered portion 213a having an edge inclined to abut the forward body protrusion 311 and a tapered portion 213a having an inclined edge abutting on the reverse body protrusion 312 on the backward disk wing 213, The body protruding portion 311 is provided with a tapered portion 311a formed in an inclined surface so as to be in contact with the tapered portion 212a of the forward disk wing 212. The tapered portion 213a of the reverse disk wing 213 is inserted into the inward body protruding portion 312, The tapered portion 312a is formed so as to be in close contact with the tapered portion 312a,

The driving unit 100 includes a rotation limiting module 400 that allows only the rotation direction of the handle 110 in one direction or prevents both directions of rotation of the handle 110, And a rotation restricting module receiving part 111 for receiving the rotation restricting module 400. The body part 300 supports the rotatable handle 110 so that when the rotation of the handle 110 is restricted, The rotation restricting module 400 includes a pivot shaft 430 and a pivot shaft 430. The pivot shaft 430 rotates vertically through the rotation restricting module accommodating portion 111. The cap 320 rotates about the pivot shaft 430, A lower slicing pawl 420 formed in the lower part of the upper slicing pawl 410 and having the same structure as the upper slicing pawl 410; A ball 440 for supporting upper and lower slicing pawls 410 and 420, and a spring 450, The pawls 410 and 420 include direction control protrusions 411 and 421 protruding from the pivot shaft 430 in the opposite direction to the gear shaft 321 to form left side slopes 411a and 421a and right side slopes 411b and 421b inclined to both sides, Left tooth portions 412 and 422 protruding from the pivot shaft 430 in such a manner that the left end thereof corresponds to the gear tooth 321 in the direction of the gear tooth 321; The ball 440 includes right and left tooth portions 411a and 421a of the upper slicing pawl 410 and the lower slicing pawl 420 or a right side tooth portion 413 and 423 protruding from the right side And the spring 450 is mounted on the slopes 411b and 421b so that the balls 440 are slid on the left slopes 411a and 421a or the right slopes 411b and 421b of the upper slicing pole 410 and the lower slicing pole 420 The upper and lower slidable pawls 410 and 420 are arranged in such a manner that the rotation of the handle 110 is suppressed in both directions However,

The surface of each of the tapered portions 212a, 213a, 311a, and 312a is hard paced,

The cap 320 further includes a protrusion-shaped stopper 322 at a rotation limit position which is a maximum rotation section of the handle 110 when the valve is opened.

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The present invention has the following effects.

That is, since there is no contact between the body and the disk during rotation for valve opening and closing, and the disc is closed close to the body directly by utilizing the difference in magnitude of the force acting on the disk, the continuous adhesion and airtight performance And it can be designed with a symmetrical structure to enable perfect bi-directional operation and confidentiality.

Further, due to the unidirectional or bidirectional rotation restricting structure of the handle, it is possible to restrain rotation in the valve opening direction when the valve is completely closed and to still be able to rotate in the valve closing direction, The adhesive force can be continuously transmitted to the protruding portion of the body, and rotation can be suppressed in both directions when necessary, so that the opening degree of the valve can be precisely adjusted.

1 is a perspective view of an entire configuration of the present invention;
2 is an exploded view of Fig.
3 is an assembly detail view showing a configuration of a body part and an operation part;
Fig. 4 is a detail view (a) of the assembly of the driving part and the rotation restricting module and a perspective view (b, c) of the pole.
5 is a plan view (a) / front view (b) / side view (c) of the disc.
6 is a perspective view (a) and a sectional view (b, c) of the body;
7 is a plan sectional view (a) and a front view (b) showing an operating state of the body and the disk;
8 is a plan sectional view (a, b, c) showing the operation state of the body and the disk.
9 is a plan view (a, b) and perspective views (c, d) showing the operation state of the body and the disk,
10 is a perspective view (a, b, c) showing an operating state of the handle by the rotation restricting module;
11 to 15 are perspective views showing the operation state of the valve by the rotation restricting module;
16 is another embodiment (a, b, c) of the present invention.
17 is a perspective view of a conventional butterfly valve on which a seat is mounted;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the scope of the present invention should be understood from the description of the claims. Further, the description of known technology which obscures the gist of the present invention is omitted.

In the description of the present invention, it should be noted that the directions of "phase", "bottom", and the like are merely directed to the shape of FIG. 2 for the sake of understanding, and directions of the baseline (or drawing)

The present invention relates to a bi-directional sheet butterfly valve comprising: a driving part (100) including a handle (110) for driving a valve opening and closing; An operation part 200 including a disk 210 which receives the rotational force of the driving part 100 and opens and closes the channel; A body part 300 installed in the pipeline and receiving the operation part 200; And a rotation restricting module 400 included in the driving unit 100 and including slicing pawls 410 and 420 for allowing only the rotation direction of the handle 110 in one direction or preventing rotation in both directions.

1 is a perspective view of an entire configuration of the present invention.

2 is an exploded view of Fig.

The driving unit 100 drives the valve opening and closing and includes a handle 110, a rotation limiting module accommodating unit 111, a handle bearing 120, and a rotation limiting module 400.

The operating part 200 receives rotational force from the driving part 100 and rotates to open and close the valve. The operating part 200 includes a disk 210, disk bearings 220 and 230, an upper packing 240, an upper stem bearing 250 A stem 260, a lower stem bearing 270, a bushing 280, and a lower packing 290.

The body 300 includes a body 310, a cap 320, a gland 330, and a bracket 340. The body 310 includes a body 310, a cap 320, a ground 330, and a bracket 340. The body 310 includes a body 310, .

The rotation restricting module 400 is included in the driving part 100 to allow only the rotation direction of the handle 110 in one direction or prevent rotation in both directions. The rotation restricting module 400 includes the upper slicing pole 410, A pole rotating shaft 430, a ball 440, and a spring 450. [0031]

3 is an assembly detail view showing the configuration of the operation part 200 and the body part 300. As shown in FIG.

The lower disk bearings 220 and 230, the upper packing 240, the upper stem bearing 250, the stem 260, the lower stem bearing 270, the bushing 280, and the lower packing 290 of the operation part 200 are rotated A detailed description thereof will be omitted.

The disk 210 is coupled to the lower portion of the stem 260 and rotates integrally with the stem 260. The disk 210 corresponds to the most characteristic portion of the present invention together with the body 310, (Fig. 5).

The stem 260 is coupled to a lower portion of the handle 110 and integrally rotates with the handle 110 to transmit the rotational force of the handle 110 to the disc 210.

The gland 330 and the bracket 340 of the body 300 correspond to the basic configuration of the valve, and a detailed description thereof will be omitted.

The body 310 corresponds to the most characteristic part of the present invention in addition to the disk 210. The body 310 is a part that accommodates both the operation part 200 including the disk 210, 6).

The cap 320 serves to control the rotation of the handle 110 by acting with the rotation limiting module 400 and includes a gear mount 321 on the surface to which the upper slicing pawl 410 or the lower slicing pawl 420 is coupled, Is formed in a serrated shape. A stopper 322 (see FIG. 4) is provided at a rotation limit of the handle 110 when the valve 110 is opened. The stopper 322 (see FIG. 4) is provided on the handle 110 so that the disc 210 is parallel to the flow of the fluid. The resistance of the disk 210 due to the flow fluid can be minimized.

4 is an assembly view (a) and a perspective view (b, c) of the pawl of the driving part 100 and the rotation restricting module 400. FIG.

The handlebar bearing 120 of the driving unit 100 corresponds to the basic configuration of the valve, and thus a detailed description thereof will be omitted.

The handle 110 is a part for driving the opening and closing of the valve by rotation. The handle 110 is installed at the upper end of the cap 320 and may be formed as a handle as shown in the figure. However, since it can be applied to various driving methods as shown in FIG. 16 (c), it may be provided at the upper end of the cap 320 to rotate the stem 260, but it is not limited thereto.

The rotation limiting module receiving portion 111 receives the rotation limiting module 400 from one side of the handle 110. When the handle 110 is formed as a handle, The cap 320 may be formed to be coupled with the cap 320.

The pivot shaft 430 of the rotation limiting module 400 corresponds to a rotation shaft such as a pin vertically penetrating the rotation restricting module accommodating portion 111. [

The upper slicing pawl 410 rotates about the pivot shaft 430 and is engaged with the cap 320 so that the handle 110 rotates only in one direction. As shown in FIG. 4 (b) 411, the left tooth portion 412 and the right tooth portion 413, and is formed of a triangular or pentagonal small lever connecting the left and right tooth portions 412, 413 and the intermediate direction control projection 411 .

The direction control protrusion 411 protrudes in the opposite direction of the gear shaft 321 from the pivot shaft 430 to form a left slant surface 411a and a right slant surface 411b inclined to both sides.

The left toothed portion 412 is formed so as to protrude so as to correspond to the gear tooth 321 at the left end in the direction of the gear tooth 321 from the pivot shaft 430, And the right end in the direction of the mountain 321 is protruded so as to correspond to the gear tooth 321. The left tooth portion 412 or the right tooth portion 413 is engaged with the gear tooth 321 to inhibit the rotation of the handle 110. [

The lower slicing pawl 420 is formed at a lower portion of the upper slicing pawl 410 in correspondence with the upper slicing pawl 410. The structure of the lower slicing pawl 420 is similar to that of the upper slicing pawl 410, A left side slope 421 and a right side slope 421b are formed by the direction control protrusion 421. The right side slope 421 and the right side slope 421 are formed on the right and left sides.

The ball 440 is seated on the left and right slopes 411a and 421a and 411b and 421b of the upper and lower slicing pawls 410 and 420 to allow rotation of the handle 110 in only one direction It plays a role.

The spring 450 urges the ball 440 in the direction of the pivot axis 430 so that the ball 440 is seated on the left side slopes 411a and 421a or the right side slopes 411b and 421b of the upper slicing pawl 410 and the lower slicing pawl 420, .

5 is a plan view (a) / front view (b) / side view (c) of the disc 210. FIG.

The disk 210 has a forward disk wing 212 and a reverse disk wing 213 formed on the center pillar 211 and is symmetrical in the forward and reverse directions.

When the direction of the fluid flow is the Y axis (the direction in which the fluid flows from the bottom to the top in the plan view of Fig. 5 (a) is the + Y direction), the forward disk wing 212 has the center pillar 211 Is formed by advancing in the + Y direction, which is parallel to the XZ plane, as a blade formed in the + X direction in the step 211.

The reverse disc wing 213 is symmetrically formed with the forward disc wing 212 with respect to the center post 211. That is, it is formed by advancing in the -Y direction while being parallel to the XZ plane as a vane formed in the -X direction at the center pillar 211.

A fluid flow inducing surface 211a is formed at an intermediate position of the center pillar 211 to connect a tangential line at which the forward disk wing 212 starts and a tangent at which the reverse disk wing 213 starts, The flow is directed to the forward disk wing 212 and the forward disk wing 212 is maintained in a state of being kept in close contact with the forward body protrusion 311 (see FIG. 6).

The forward disk wing (212) is formed with a tapered portion (212a) whose edge is in contact with the forward body protrusion (311). The reverse disk wing 213 is also formed with a tapered portion 213a whose edge is in contact with the reverse body protrusion 312 (see FIG. Which are in close contact with the tapered portion 311a of the forward body protrusion 311 and the tapered portion 312a of the reverse body protrusion 312, respectively.

8, the disk centerline Cd, which is the end of the forward disk disk wing 212 and the backward disk disk wing 213 end just before the valve is closed and in the fully closed state, Cb). [0051] As shown in FIG.

6 is a perspective view (a) and a sectional view (b, c) of the body 310. Fig.

The body 310 is installed in a channel through which the fluid flows and accommodates the rotating disc 210. The body 310 is different from the conventional valve in that the forward body protrusion 311 and the reverse body protrusion 312 are formed.

The forward body protrusion 311 is formed to protrude inward of the body 310 along a tangent line contacting the forward direction disk wing 212 at a position adjacent to the forward direction disk wing 212 in the + Y direction.

The reverse body protrusion 312 is formed symmetrically with the forward body protrusion 311. The reverse body protrusion 312 is formed symmetrically with respect to the forward direction body protrusion 311. The reverse body protrusion 312 is formed on the back side of the body 310 along the tangent line contacting the reverse disc wing 213 at a position adjacent to the reverse disc wing 213 in the- And is protruded inward.

The forward body protrusion 311 is formed with a tapered portion 311a formed to be in contact with the tapered portion 212a of the forward disk wing so as to be in close contact with the tapered portion 311a of the forward disk protrusion 311. Similarly, A tapered portion 312a is formed so as to be in close contact with the upper surface 213a.

The surface of each of the tapered portions 212a, 213a, 311a and 312a may be reinforced through a wear-resistant reinforcement treatment such as hard facing (hardening-up welding). This is because in the case of the other butterfly valve, the soft seat valve is surrounded by the rubber, so that the surface treatment is not meaningful, and the metal sheet is also in a situation where it is difficult to perform effective wear- Since the surface hardening work is easy, the durability is improved through the wear-resistant reinforcement work such as hard facing and the use period can be drastically increased.

The symbols used in the present invention are defined as follows based on the above-described configuration.

P: Pressure of the forward fluid

A1: the cross-sectional area of the face on which the forward fluid is applied to the forward disk wing 212

A2: the cross-sectional area of the face in which the forward fluid is applied to the reverse-side disk wing 213

F1: Forward force is the force pushing forward disk wing 212

F2: Forcing force of the forward fluid against the reverse disk wing (213)

L1 is the length of the forward disk wing 212 in which F1 acts

L2: length of the reverse disk wing 213 to which F2 acts

T1: torque generated by the forward disk wing 212

T2: torque generated by the reverse disk wing 213

R: Rotational force (T1-T2) of the disk 210 generated by the flow fluid and adhesion force

Cd: Centerline of disk

Cb: Center line of valve body

7 to 9 are views showing details of how the body 310 and the disk 210 are operated. Based on the above-described structure and symbol definition, detailed operation and core mechanism of the bi-directional sheet butterfly valve are described in detail Explain.

7 is a plan sectional view (a) and a front view (b) showing a state in which the body 310 and the disk 210 are engaged.

The body protrusions 311 and 312 protruding into the channel create a difference in fluid contact area (A1> A2) over the forward disk wing 212 and the reverse disk wing 213 to close the disk 210 to the body 310 F1 = F × A2, A1> A2) (F1 = P × A1 and F2 = P × A2). That is, the rotational force R generated by the difference in the fluid contact cross-sectional area can be used to close and close the disc 210 and to maintain the airtightness of the valve.

Specifically, the rotational force (R = R) of rotating the disk with respect to the center axis by the torque difference (T1 = F1 x L1> T2 = F2 x L2) acting on the forward disk wing 212 and the reverse disk wing 213, T1-T2 = positive number) (∵ F1> F2, L1> L2).

The torsional portion 212a of the forward direction disk blade 212 and the tapered portion 311a of the forward direction body protrusion 311 come into close contact with each other and the tapered portion 213a of the reverse direction disk wing 213 comes into contact with the tapered portion 311a of the forward direction disk- And the tapered portion 312a of the reverse-direction body protrusion 312 are in close contact with each other, thereby closing the valve and maintaining the airtight state.

As the pressure P of the fluid increases, the rotational force R of the disc 210 also increases, so that the force to close and close the valve is also proportionally increased, thereby further enhancing the valve airtightness.

8 is a plan sectional view (a, b, c) showing the operation state of the body 310 and the disk 210, and explains a state in which the disk 210 is closed and guided by using the parallel movement of the disk vanes 212 and 213 .

The forward disk wing 212 and the reverse disk wing 213 are formed in a state in which they are moved in parallel in the ± Y direction with respect to the XZ plane so that the forward disk wing 212 in the state in which the valve is closed (Figure 8 (b) The disk center line Cd between the end point of the reverse disk wing 213 and the end point of the reverse disk wing 213 is maintained at a predetermined angle with respect to the body center line Cb across the body 310. [

The flow of the fluid in the final process (Fig. 8 (a)) in which the valve is closed by the inclined disk center line Cd serves to induce the closing of the forward disk wing 212. [

Even if a slight change occurs in the internal fluid during valve closing (FIG. 8 (b)), the fluid is guided to the forward disk wing 212 by the inclined center of the disk, and the balance of the disk 210 in the closed state is maintained do.

In addition, the position of the disc 210 in the closed state can be maintained by the volume difference (Fig. 6 (c)) on the forward and reverse disc blades 212 and 213 during valve closing.

The disc protrusions 311 and 312 and the disc blades 212 and 213 installed in parallel to move back and forth in the flow direction are actuated so that the disc blades 212 and 213 are brought into close contact with the body protrusions 311 and 312 during the closing process of the valve, The balance of the disk 210 in the closed state is maintained.

9 is a plan sectional view (a, b) and a perspective view (c, d) showing the operation state of the body 310 and the disk 210, and explains the bi-directional operation, the non-interference rotation, and the no-seat airtightness.

Since the body protrusions 311 and 312 and the disk wings 212 and 213 are designed to have a symmetrical structure, they operate by the same mechanism for forward flow and reverse flow and block the flow fluid, thereby realizing a substantially intact bidirectional operation a, b)).

In addition, since there is no interference between the body projections 311, 312 and the inner side surface 313 and the disk vanes 212, 213 during valve opening and closing rotation, there is an effect of reducing the operating torque and increasing the service life of the product (Fig. 9 (c)).

Particularly, the tapered portions 311a and 212a, 312a and 213a formed by obliquely touching the portions where the body protrusions 311 and 312 and the disk vanes 212 and 213 are in contact with each other widen the contact area and increase the flow- It is possible to maintain the air-tightness without using the valve, thereby realizing a zero seat butterfly valve (Fig. 9 (d)).

10 is a perspective view showing an operating state of the handle 110 by the rotation restricting module 400 and shows a configuration for preventing the reverse rotation of the disk 210 and opening it accurately.

That is, a gear tooth 321 is formed on the cap 320 which is sequentially fixed from the body 310 to be fixed in position, is fastened to the stem 260 at the center, A handle 110 to which two slicing pawls 410 and 420 corresponding to the slider pawls 321 are fastened is installed at the upper end.

When the disc 210 connected to the stem 260 is rotated clockwise to open the valve, the slicing pawls 410 and 420 are all pressed to the right (Fig. 10 (a)). In this state, the ball 440 which is in contact with the rear side of the slicing pawls 410 and 420 is seated on the left slopes 411a and 421a and the spring 450 supports the handle 410 to rotate clockwise, Counterclockwise rotation is prevented.

When the disk 210 connected to the stem 260 is rotated counterclockwise to close the valve, the slicing pawls 410 and 420 are all pushed to the left (Fig. 8 (b)). In this state, the ball 440 which is in contact with the rear side of the slicing pawls 410 and 420 is seated on the right slopes 411b and 421b and the spring 450 supports the handle 410 to rotate counterclockwise , Clockwise rotation is prevented.

In order to adjust the degree of opening of the valve, the slicing pawls 410 and 420 are pressed to the right and left respectively opposite to each other to fix the disk 210 connected to the stem 260 (Fig. 8 (c)). In this state, the handle 110 is prevented from rotating in both directions.

In general, the ratchet handle has a function of transmitting rotational force in one direction and idling in the opposite direction. In the present invention, however, it is more applied to the basic principle of the ratchet handle to transmit rotational force in one direction, And the position of the handle is completely fixed at a specific position during the rotation by using the slicing pawls 410 and 420 separated vertically, so that the opening degree of the valve can be precisely adjusted.

Figs. 11 to 15 are perspective views showing an operation state of the valve by the rotation restricting module. Fig.

1. Preparing for valve opening rotation

Fig. 11 shows a state for preparing for valve opening. In order to rotate clockwise, all of the slicing pawls 410 and 420 are pressed to the right to prepare for valve opening rotation.

2. Valve open rotation

12 shows a state in which the handle 110 is rotated to open the valve, and the handle 110 is rotated clockwise by 90 degrees with all of the slicing pawls 410 and 420 pressed to the right.

At this time, by the operation of the ball 440 and the spring 450 installed behind the slicing pawls 410 and 420, the slicing pawls 410 and 420 allow the clockwise rotation of the handle 110 and prevent the counterclockwise rotation.

The disc 210 of the disc 210 rotates with respect to the body protrusions 311 and 312 of the body 310 and the inner side surface 313 of the body 313 at the same time as the disc 210 rotates backward of the body protrusions 311 and 312 during the valve- And does not cause interference.

As long as the direction of the slider pawls 410 and 420 is not changed even when the rotation is completed, the slider pawls 410 and 420 still play the role of suppressing the counterclockwise rotation.

In addition, since the clockwise rotation is limited by the stopper 322 of the cap 320, the disk 210 maintains the current position in which all rotations toward the clockwise and counterclockwise directions are inhibited when the rotation of the disk 210 is completed .

3. Valve closed rotation ready

Fig. 13 shows a state for preparing the valve closing. In order to rotate counterclockwise, all of the slicing pawls 410 and 420 are all pushed to the left to prepare for valve closing rotation.

4. Valve closed rotation

14 is a state in which the handle 110 is rotated to close the valve, and the handle 110 is rotated counterclockwise by 90 degrees in a state in which all of the slicing pawls 410 and 420 are pressed to the left.

At this time, by the operation of the balls 440 and the springs 450 installed behind the slicing pawls 410 and 420, the slicing pawls 410 and 420 allow the rotation of the handle 110 in the counterclockwise direction and prevent the clockwise rotation.

During the closing process, the disc blades 212 and 213 rotate toward the body protrusions 311 and 312, and there is no interference with the body protrusions 311 and 312 and the body inner side surface 313 at all.

The slider pawls 410 and 420 still inhibit clockwise rotation unless the direction of the slider pawls 410 and 420 is changed even when the rotation is completed. This is because the disc 210 is rotated from the body protrusions 311 and 312 And functions to prevent separation.

7, the rotational force R for rotating the disk 210 about the center axis is generated by the force difference (F1> F2) acting on the disk vanes 212 and 213, The airtight condition can be maintained more effectively.

In addition, as described with reference to FIG. 8, due to the structure of the forward and reverse disk vanes 212 and 213 installed in parallel, the disk 210 is closed immediately before the valve is closed, and when the valve is closed, And has a property to maintain the closed state of the valve even if it occurs.

The overall force acts to increase the rotational force R that brings the disk 210 in close contact with the body 310 in proportion to the pressure P of the fluid and eventually the pressure P of the fluid helps to maintain the airtightness of the valve .

Further, in the state of FIG. 14, the rotation limiting module 400 prevents the handle 110 from rotating in the clockwise direction (rotation in the valve opening direction), but the rotation in the counterclockwise direction (rotation in the valve closing direction) The disc wings 212 and 213 do not interfere with the continuous action of the urging force R on the body protrusions 311 and 312.

5. Valve open precision control

15 is a partial cross-sectional perspective view showing the operation of the valve, in which the position of the disc 210 is fixed in order to precisely control the opening of the valve.

That is, after the disk 210 is rotated and moved to a position to fix the disk 210, the upper slicing pawl 410 and the lower slicing pawl 420 are pushed in opposite directions at a determined position.

In this state, the bi-directional rotation of the handle is completely restrained, so that the disc is kept fixed at a specific position.

Fig. 16 shows another embodiment of the present invention. In the butterfly valve type, the core mechanism of the present invention can be applied to all types of wafers, lugs, flange types, etc. as shown in Fig. 14 (a).

14 (b), the core mechanism of the present invention can be applied to all the joining methods such as welding, bolting, and unibody.

Lastly, in the method of driving the disc 210, the core mechanism of the present invention is applied to all driving methods such as lever driving, gear driving, and actuator (automatic opening and closing driving device) driving as shown in FIG. It is possible.

The effects exerted by the present invention are summarized as follows.

1. There is no interference between the body and the disc during rotation of the disc for valve opening and closing, so that friction and wear between the body and the disc do not occur.

2. Using the difference in force acting on the forward and backward disk wings of the disk, the obliquely machined disk wing contact face is directly closed to the oblique body protrusion contact face, It is possible to maintain.

3. When the valve is closed, the pressure of the valve closely contacts the protrusion of the body to keep the airtightness of the valve. Therefore, the higher the pressure of the fluid in the valve, the better the adhesion and airtightness of the disk.

4. In order to prevent the conventional products from being opened by the high fluid pressure in the valve when the disc is closed, the handle or other valve opening / closing device (actuator) must bear the continuous position holding force. However, The pressure of the fluid takes a structure that helps the disk close and the valve close rather than the fluid pressure, so that the burden of being transmitted to the valve opening / closing device by the fluid pressure can be minimized.

5. The present invention is not a structure in which a disk comes in contact with a sheet (part) structurally weak like the existing products and thus can not withstand the pressure of a fluid, but is in direct contact with a fixed body protrusion so that it can withstand hydraulic pressure. Do.

6. Wear-resistant reinforcement work can be easily carried out by hard pacing (hardening-up welding) of the contact surface between the body and the disk, which can dramatically increase the valve usage period.

7. It is symmetrical with the center axis and has a symmetrical structure in both forward and backward directions, which enables complete bi-directional operation and confidentiality maintenance (most of the bi-directional operation and airtight products are not made in a forward / reverse symmetrical structure, .

8. Since there is no interference between the disk and the body when the valve is opened and closed and the pressure of the fluid is used even when the valve is closed, the operating torque for opening and closing the valve can be greatly reduced. In order to select an opening / closing drive system, the specification of the applicable capacity is much more than that of the conventional butterfly valve, which has a great advantage in cost reduction and maintenance of the automatic valve.

9. The sloping pole ratchet handle at the top of the valve prevents rotation in the opposite direction when the valve is opened and closed, and precisely adjusts the degree of opening of the valve if necessary. Also, when the valve is fully closed, the valve opening (pressure drop of the disk blade) is prevented by the sudden change (drop) of the fluid pressure in the valve, and the structure of the disk wing can be continuously transmitted to the protrusion of the body Sufficient airtight performance is maintained even when the sheet is not applied. Further, if necessary, the degree of opening of the valve can be adjusted more precisely by restricting rotation of the handle at any position during rotation and fixing the position.

10. By not using other sheets, you can get the following incidental effects. That is, it is not necessary to apply the sheet material change according to the kind of fluid, and it is possible to expand the application range of the temperature (extremely low temperature and high temperature), which was limited by the limit of the sheet, and it is unnecessary to periodically manage the sheet, Because it is not produced separately, it is possible to save energy and produce eco-friendly products.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be clear to those who have knowledge.

100:
110: Handle
111: rotation limit module accommodating portion
200:
210: disk
211: center column
211a: fluid flow guide surface
212: forward disk wing
212a:
213: reverse disc wing
213a:
220: Disc bearing
230: Disk bearing
240: Upper packing
250: Upper stem bearing
260: Stem
270: Lower stem bearing
280: Bushing
290: Lower packing
300:
310: Body
311: forward body protrusion
311a:
312: reverse body protrusion
312a:
313: Body inside side
320: cap
321: Gear Mountain
322: Stopper
330: Grand
340: Bracket
400: rotation limit module
410: upper slicing pole
411: Direction control projection
411a: Left slope
411b:
412: Left tooth portion
413: right tooth portion
420: lower slicing pole
421: Direction control protrusion
421a:
421b:
422: left tooth portion
423: right tooth portion
430: Pole rotating shaft
440: view
450: spring

Claims (6)

A driving unit (100) for controlling the opening and closing of the valve;
An actuating part 200 which receives the rotational force of the driving part 100 and opens and closes the channel;
And a body part (300) installed in the pipeline and receiving the operation part (200)

The driving unit 100
And a handle (110) for controlling valve opening and closing,

The operation part 200
A stem 260 coupled to a lower portion of the handle 110 to rotate integrally therewith,
And a disk (210) coupled to the stem (260) to rotate integrally therewith,
The disk 210 is formed with a forward disk wing 212 and a reverse disk wing 213 with respect to a center column 211 as a rotation axis,

The body part (300)
And a body (310) for receiving the actuating part (200)

The disk 210
A forward disk wing 212 formed by advancing in the + Y direction relative to the XZ plane parallel to the XZ plane but passing through the center of the disk 210,
And a reverse disk wing (213), which is symmetrical with the forward disk wing (212) and is formed by advancing in the -Y direction parallel to the XZ plane but over the XZ plane passing the center of the disk (210)

The body 310
When the Z-axis is the center pillar 211 and the Y-axis is the fluid flow direction,
A forward direction body protrusion 311 protruding inwardly of the body 310 along a tangent line contacting the forward direction disk wing 212 at a position adjacent to the forward direction disk wing 212 in the + Y direction,
And a reverse body protrusion 312 protruding inwardly of the body 310 along a tangent line contacting the reverse disk wing 213 with the reverse disk wing 213 at a position adjacent to the reverse disk wing 213 in the -Y direction,

The forward disk wing 212 is in direct contact with the forward body protrusion 311,
The reverse disk wing 213 is formed to directly contact the reverse body protrusion 312,

The disk 210
And a fluid flow guide surface 211a connecting the tangent line at which the forward disk wing 212 starts and the tangential line at which the reverse disk wing 213 starts at a plane in the central column 211 of the disk 210. [ and,

The forward disk wing (212) has a tapered portion (212a) having an inclined surface which abuts the forward body protrusion (311)
The reverse disk wing 213 is formed with a tapered portion 213a having an inclined surface which abuts the reverse body protrusion 312,
The forward body protruding portion 311 is provided with a tapered portion 311a formed in an inclined surface so as to be in contact with the tapered portion 212a of the forward disk wing 212,
The reverse body protrusion 312 is formed with a tapered portion 312a formed to be in contact with the tapered portion 213a of the reverse-side disk wing 213 to be in close contact with the reverse-

The driving unit 100
A rotation restricting module 400 that permits only the rotation direction of the handle 110 in one direction or prevents rotation in both directions,
Further comprising a rotation restricting module accommodating portion (111) for accommodating the rotation restricting module (400) at one side of the handle (110)

The body part (300)
Further comprising a cap (320) for supporting the rotating handle (110) and coupled with the rotation limiting module (400) to inhibit rotation of the handle (110)

The rotation limiting module 400
A pole rotating shaft 430 vertically penetrating the rotation restricting module accommodating portion 111,
An upper slicing pawl 410 which rotates about the pawl rotation axis 430 and is coupled with the cap 320 so that the handle 110 rotates only in one direction,
A lower slicing pawl 420 formed in the lower part of the upper slicing pawl 410 and formed in the same structure as the upper slicing pawl 410,
A ball 440 and a spring 450 for supporting the upper and lower slicing pawls 410 and 420,

The upper and lower slicing pawls 410,
Direction control protrusions 411 and 421 protruding from the pivot shaft 430 in the direction opposite to the gear tooth 321 to form left side slopes 411a and 421a and right side slopes 411b and 421b inclined to both sides,
Left tooth portions 412 and 422 protruding from the pivot shaft 430 in the direction of the gear tooth 321 so that the left end thereof corresponds to the gear tooth 321,
And right tooth portions 413 and 423 protruding from the pole rotating shaft 430 in the direction of the gear tooth 321 so that the right end thereof corresponds to the gear tooth 321,

The ball 440 is seated on the left side slopes 411a and 421a or the right side slopes 411b and 421b of the upper slicing pole 410 and the lower slicing pole 420,
The spring 450 urges the ball 440 in the direction of the pivot axis 430 so that the ball 440 is seated on the left side slopes 411a and 421a or the right side slopes 411b and 421b of the upper slicing pawl 410 and the lower slicing pawl 420, As a result,
The upper and lower slicing pawls 410 and 420 suppress the rotation of the handle 110 in both directions
Bi-directional sheet butterfly valve.
delete The method according to claim 1,
The surface of each of the tapered portions 212a, 213a, 311a and 312a is subjected to hard facing treatment
Bi-directional sheet butterfly valve.
The method of claim 3,
The cap 320
And a protrusion-shaped stopper (322) at a rotation limit position which is a maximum rotation section of the handle (110) when the valve is opened
Bi-directional sheet butterfly valve.
delete delete

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