CN111364572A - Flexible cut-off device - Google Patents

Abstract

The invention relates to the technical field of drainage equipment, in particular to a flexible cut-off device, which comprises a flexible cut-off device body, a flexible cut-off device body and a flexible cut-off device body, wherein the flexible cut-off device body is provided with a plurality of cut-off holes; the water flow cutting device comprises an outer shell, a rubber sleeve and a cutting part, wherein a water flow channel is arranged in the rubber sleeve; the outer shell is arranged outside the rubber sleeve, a pressurizing cavity is formed by the inner wall of the outer shell and the outer wall of the rubber sleeve, the dividing part is connected with the outer shell and the rubber sleeve and arranged in the pressurizing cavity, and the pressurizing cavity is divided into a plurality of independent cavities along the axial direction of the rubber sleeve; and an inlet and an outlet which are respectively communicated with each cavity are also arranged. The invention has simple structure, cut-off function and wide application range. The rubber sleeve and the outer shell are of an integrated structure, and are physically divided into two pressurizing cavities by the dividing part, so that the rubber sleeve is simple in manufacturing process, easy to wind, low in manufacturing cost and simple in process due to the adoption of an integrated structure.

Description

Flexible cut-off device

Technical Field

The invention relates to the technical field of drainage equipment, in particular to a flexible cut-off device.

Background

Flexible cut-off equipment has shell body and rubber sleeve, forms between shell body and the rubber sleeve and pressurizes the chamber, and rubber sleeve embeds there is the circulation passageway that supplies rivers to pass through, through to pressurizing the intracavity and being filled into and having pressured gas, rubber sleeve relative deformation, the circulation passageway diminishes to the circulation passageway ends, and flexible cut-off equipment closes, pressurizes the chamber and loses heart the back, and rubber sleeve resumes to warp, and the circulation passageway grow gradually to the circulation passageway, and flexible cut-off equipment opens.

When flexible cut-off equipment uses in drainage system, according to service environment needs the telescopic deformation of rubber to damming the water in the runner, not only need the state of complete closure, still need the runner to damming certain height sometimes, be equivalent to the form of weir that can height-adjusting, damming the rainwater of certain height, when the water level rises to more than the height that dams, water can overflow from the above. In addition, when the drainage pipe needs to be used at a drainage outlet, the drainage outlet also needs to be capable of intercepting water at a certain height, so that the natural water body is prevented from flowing backwards, and flood discharge is not influenced while the natural water body is prevented from flowing backwards.

For the above control requirements, the current flexible cut-off device can only be opened and closed, so that the cut-off function cannot be realized, and the application range is small. Therefore, a flexible cut-off device with cut-off function is needed.

Disclosure of Invention

In view of the above, the present invention has been developed to provide a flexible cut-off device that overcomes, or at least partially solves, the above-mentioned problems.

The invention provides a flexible cut-off device, comprising;

an outer housing;

the rubber sleeve is internally provided with a water flow channel; the outer shell is arranged outside the rubber sleeve, and a pressurizing cavity is formed between the inner wall of the outer shell and the outer wall of the rubber sleeve;

the dividing part is connected with the outer shell and the rubber sleeve, is arranged in the pressurizing cavity, and divides the pressurizing cavity into a plurality of independent cavities along the axial direction of the rubber sleeve;

and an inlet and an outlet which are respectively communicated with each cavity are also arranged.

Preferably: further comprising:

the limiting part is positioned in the circulation channel, extends along the inner wall of the rubber sleeve and abuts against the rubber sleeve at the position opposite to the dividing part to deform.

Preferably: the limiting part comprises a horizontal part and a supporting part, one end of the horizontal part is fixed on the outer shell, the other end of the horizontal part penetrates through the dividing part and the rubber sleeve to extend into the circulation channel and be connected with the supporting part, and the supporting part supports against the rubber sleeve.

Preferably: the supporting part comprises a pressing strip and a framework, the framework covers the pressing strip, the framework extends along the axis direction of the rubber sleeve, and the pressing strip is connected with the horizontal part.

Preferably: the horizontal part is a plurality of bolt structures arranged at intervals.

Preferably: the dividing part is a rubber pad, the rubber pad extends along the axial direction of the rubber sleeve, and the rubber pad is fixed between the outer shell and the rubber sleeve by the horizontal part.

Preferably: the limiting part comprises a pressing block and a fastening piece, the fastening piece is arranged at the position, close to the two end parts, of the pressing block, and the outer shell, the dividing part, the rubber sleeve and the pressing block are fixed through the fastening piece.

Preferably: the inner side of the cutting part is provided with an arc surface matched with the outer wall of the rubber sleeve, and the outer side of the cutting part is provided with an arc surface matched with the inner wall of the outer shell.

Preferably: the arc length L of the cross section of the rubber sleeve abutted by the limiting part has a value range of

D is the diameter of the rubber sleeve.

Preferably: the sealing surface of the sealing element is provided with two cambered surfaces, and the cambered surfaces are matched with the shapes of the limit positions of the rubber sleeve.

The invention discloses a flexible cut-off device which comprises an outer shell, a rubber sleeve, an inlet and an outlet and a partition part. Rubber sleeve adopts overall structure, the punching press chamber that forms between rubber sleeve and the shell body is divided by the partition part and is two complete independent chambeies first cavity and second cavity promptly, it pressurizes to dash into in the cavity that lies in the downside, the uplift rubber sleeve part is equivalent to the weir that dams, according to the required height control that dams fills the pressure size that pressurizes the intracavity, it dams the water of a take the altitude, rise to when damming more than the height, the rainwater can overflow from the top, can intercept the long-pending mud of circulation passageway bottom like this, prevent that the long-pending mud of bottom from getting into the low reaches along with rivers, when flexible cut-off equipment uses in the environment that need prevent flowing backward such as drain, do not influence the flood when preventing that the water of low reaches from flowing backward, application scope is wide. Rubber sleeve and shell body all adopt integrative structure, carry out physics through the partition part and cut apart and be two and fill the pressure chamber, and rubber sleeve adopts monolithic structure manufacturing process fairly simple, and the winding is easy, and the cost of manufacture is lower.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a schematic diagram of an embodiment of the invention.

Fig. 2 shows a cross-sectional view a-a of fig. 1.

Fig. 3 shows a cross-sectional view B-B of fig. 2 with the flow channel open.

Fig. 4 shows a cross-sectional view B-B of fig. 2 with the flow channel closed.

Fig. 5 shows a cross-sectional view B-B of another version of the flow channel of fig. 2 with the flow channel open.

Fig. 6 shows a cross-sectional view B-B of the alternative form of fig. 2 with the flow channel closed.

The device comprises an outer shell 1, a pressurization cavity 10, a first cavity 11, a second cavity 12, a rubber sleeve 2, a circulation channel 20, a limiting part 3, a horizontal part 30, a butting part 31, a pressing plate 310, a framework 311, a sealing part 32, a pressing block 33, a fastening piece 34 and a dividing part 4.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The first embodiment of the invention provides a flexible cut-off device, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the device comprises an outer shell 1, a rubber sleeve 2 and a partition part 4, wherein the outer shell 1 is a rigid structure with an integrated structure, the rubber sleeve 2 is a cylinder body with an integrated structure, the outer shell 1 is sleeved outside the rubber sleeve 2, a pressurizing cavity 10 is formed between the inner wall of the outer shell 1 and the outer wall of the rubber sleeve 2, the partition part 4 is arranged in the pressurizing cavity 10, the partition part 4 is fixed on the outer shell 1 and the rubber sleeve 2, the pressurizing cavity 10 is divided into two independent cavities, namely a first cavity 11 and a second cavity 12, each cavity is provided with an independent inlet and outlet to serve as the same kind of expansion, a plurality of independent cavities can be arranged in the embodiment according to needs, and each cavity is independently controlled.

The rubber sleeve 2 and the outer shell 1 in the structure adopt an integrated structure, and are physically divided into two pressurizing cavities by the dividing part, and the rubber sleeve adopts an integrated structure, so that the manufacturing process is simple, the winding is easy, and the manufacturing cost is low.

Specifically, the partitioning part 4 provided by the invention partitions the pressurizing cavity 10 into two independent cavities, and partitions the pressurizing cavity 10 into two independent cavities, namely the first cavity 11 and the second cavity 12, if only the first cavity 11 on the lower side is pressurized, the rubber sleeve 2 on the lower side is raised by a certain height, which is equivalent to the function of an adjustable weir, and the pressure of the gas filled in the first cavity 11 is controlled according to the required cutoff height, so that the flexible cutoff device with the structure can be used in occasions requiring overflow or backflow prevention, and is applicable to a range.

Specifically, a limiting part 3 is further provided, the limiting part 3 is connected with the dividing part 4, one end of the limiting part 3, which is located in the flow channel, abuts against the rubber sleeve 2 at a position opposite to the dividing part 4, the position is a limiting position of the rubber sleeve 2 in a closed state, the limiting part 3 extends along the inner wall of the rubber sleeve 2, and the deformation of the position is limited by the limiting position abutting against the rubber sleeve 2. The closed state of the rubber sleeve 2 is a deformation state of the rubber sleeve 2 when the rubber sleeve 2 deforms under the action of pressure to the end of the flow channel after a pressure medium is filled into the pressure filling cavity 10 from the inlet and the outlet through an external pressure filling mechanism. Further, the limit positions refer to the rubber sleeve portions at the farthest positions from the center in the cross section of the closed position of the rubber sleeve 2 in the closed state, and refer to fig. 4 as an example of relative deformation, and the limit positions are at both sides of the rubber sleeve 2. The limit positions in the invention are determined by the structure of the rubber sleeve 2 when closed, and can be two limit positions or four limit positions, the limit positions correspond to the positions of the dividing parts 4 one by one, and each limit position is correspondingly provided with a limit part.

According to the invention, by utilizing the structure, pressurized gas or pressurized liquid is filled into the pressurizing cavity 10 through the inlet and the outlet, the rubber sleeve 2 is deformed relatively, the flow channel 20 is closed, when the pressurizing cavity 10 is depressurized through the inlet and the outlet, the rubber sleeve 2 recovers deformation, the flow channel 20 is communicated, the deformation of the limit position of the rubber sleeve 2 is limited by the limiting part 3 at the limit position of the rubber sleeve 2, so that the rubber in each deformation area of the rubber sleeve 2 is changed into one convex deformation from two convex deformations, the deformation difficulty is high due to the limit position being limited by space, the rubber deformation of the rubber sleeve 2 at the limit position is limited by the limiting part 3, and space is reserved for the rubber deformation of other parts, so that zero leakage sealing can be realized when the flow channel 20 is completely closed, the required pressure is small, the sealing effect is good, and the structure is simple.

The flexible cut-off device of the present invention will be described in detail as follows:

specifically, as shown in fig. 3 and 5, the dividing portion 3 is a rubber pad extending in the axial direction of the rubber sleeve 2, and the rubber pad is fixed between the outer case 1 and the rubber sleeve 2. Simple structure and convenient installation.

Further, the outer side of the rubber pad has an arc surface matched with the inner wall of the outer shell 1, and the inner side of the rubber pad has an arc surface matched with the outer wall of the rubber sleeve 2. The rubber pad is well matched with the space between the outer shell 1 and the rubber sleeve 2, the sealing structure between the independent cavities is simple, and the sealing effect is better.

Specifically, referring to fig. 3 and 4, the limiting portion 3 includes a horizontal portion 30 and a holding portion 31, one end of the horizontal portion 30 is fixed on the outer casing 1, the other end of the horizontal portion passes through the outer casing 1, the dividing portion 4 and the rubber sleeve 2 and extends into the flow channel 20, the holding portion 31 is connected to the other end of the horizontal portion 30, the holding portion 31 is located in the flow channel 20, and the holding portion 31 extends along the inner wall of the rubber sleeve 1 and is located at the limit position of the closed state of the rubber sleeve 2. Spacing portion 3 adopts split type structure, assembles shell body 1, partition portion 4, rubber sleeve 2 and support portion 4 through horizontal part 30, can follow the external mounting of shell body 1, convenient operation.

Further, horizontal part 30 is a plurality of bolt structures, supports to hold 31 and includes clamp plate 310 and skeleton 311, and the cladding of skeleton 311 is on clamp plate 310, and skeleton 311 extends along rubber sleeve 2's axis direction, and the one side that clamp plate and rubber sleeve 2 contacted has the arcwall face the same with rubber sleeve 2, and skeleton 311 and the laminating of the surface of rubber sleeve 2 restrict the deformation of rubber sleeve 2 of extreme position department better. Set up a plurality of bolt structures along rubber sleeve 2's axis direction interval, the nut is passed through to the one end of bolt and is fixed on shell body 1, and the other end passes segmentation 4, rubber sleeve 2 and links to each other with clamp plate 310, and spacing portion 3's overall structure is compact, compromises the maneuverability of installation and dismantlement.

Specifically, referring to fig. 5 and 6, the limiting portion 3 includes a pressing block 33 and a fastening piece 34, the pressing block 33 is disposed in the circulation passage and extends along the axial direction of the rubber sleeve 2, the side surface of the pressing block 33 contacting the rubber sleeve 2 has an arc surface corresponding to the inner relative position of the rubber sleeve 2, the pressing block 33 is closely attached to the inner wall of the rubber sleeve 2, a plurality of fastening pieces 34 are disposed at the positions of the two end portions of the pressing block 33 at intervals along the axial direction of the rubber sleeve 2, the fastening pieces 34 are bolts, one end of each fastening piece 34 is fixed on the outer shell 1, the other end of each fastening piece 34 sequentially penetrates through the outer shell 1, the dividing portion 4, the rubber sleeve 2 is fixedly connected with the pressing block 33, and the outer shell 1, the. Both sides of briquetting 33 all set up fastener 34, and when being applicable to 2 pipe diameters of rubber sleeve great, the position that spacing portion 3 restriction warp is great, and spacing portion 3's width is great, strides the width interval and sets up fastener 34 fixed briquetting 33, and structural stability is better, easy to assemble operation. In the present embodiment, a limiting portion 3 is described, and when a plurality of limiting portions 3 are provided, the structure of each limiting portion 3 is the same.

Further, referring to fig. 5 and 6, the dividing portion 4 is a rubber pad, wherein a rubber pad is correspondingly disposed on the fastening member 34 at each end, two rubber pads are disposed on a corresponding limiting portion 3, the corresponding rubber pads are fixed by the fastening members 34, the arc length of the rubber sleeve 3 between the adjacent limiting portions 3 is substantially the same as the arc length of the corresponding independent pressurizing cavity 10, in this embodiment, no pressurizing cavity is disposed between the rubber sleeve 2 between the two fastening members 34 of the pressing block 33 and the outer shell 1, the rubber sleeve 2 of this portion is not deformed by an external force, the phenomenon that the local stress of the rubber sleeve 2 supported by the limiting portions 3 is large and the rubber sleeve 2 is torn is avoided, and the rubber sleeve is particularly suitable for the case that the pipe diameter of the rubber sleeve 2 is large, and has good.

Further, the pressing block 33 is covered with a sealing element 32, and preferably, the sealing element 32 has an arc surface matched with the shape of the rubber sleeve 2 in the extreme position, so that the flow channel 20 can be well sealed, and water leakage under the action of small air pressure can be realized.

Specifically, a large number of experiments find that, when the rubber sleeve 2 of the flexible cut-off device in the prior art is completely closed, a folded portion exists at the extreme deformation position of the rubber sleeve 2, the folded portion is difficult to deform, and zero-leakage sealing is difficult to achieve, so that the range of the arc length L of the cross section of the rubber sleeve 2 of the abutting portion 31 in the embodiment is as follows

D is a rubber sleeveDiameter.

Specifically, because the extreme positions of the ends on both sides of the rubber sleeve 2 are difficult to deform, if the first rubber half body 21 and the second rubber half body 22 are to be completely cut off, the flow passage is cut off and has zero leakage, and the required pressure is large, in this embodiment, the sealing element 32 is arranged at one end of the limiting part 32 located in the flow passage 20, and when the rubber sleeve 2 is completely closed, the sealing element fills the extreme positions on both sides of the rubber sleeve 2, and the rubber sleeve 2 can be completely closed by using a small pressure.

Further, one side of the sealing element 32 far away from the blocking part 3 is provided with a tip, and the cambered surface of the outer surface of the sealing element 32 is matched with the shape of the cambered surface of the closed rubber sleeve 2, so that the sealing effect is good.

Furthermore, the sealing element 32 is made of rubber, the hardness of the used rubber is 15-30 degrees, the hardness of the sealing element is soft, and the sealing element can be well adapted to the shapes of the limit positions on the two sides of the rubber sleeve 2 when the sealing element is extruded and deformed by the pressure of the rubber sleeve 2, so that the sealing effect is good.

In the invention, the flexible cut-off device has the following three working states:

the first operating state is shut-off. Specifically, pressurized gas is filled into the first cavity 11 through the inlet and the outlet, the lower half part of the rubber sleeve 2 is upwards raised for a certain height, and has a certain interception height, at the moment, the top space of the lower half part of the rubber sleeve 2 can overflow part of water, downstream water can be prevented from flowing backwards to enter the front side of the flexible interception device, waterlogging is avoided, and the flexible interception device has the function of preventing sediment in water from entering the downstream. The first cavity 11 can be charged with pressure or decompressed according to the requirement of the intercepting height, so as to achieve the purpose of adjusting the intercepting height.

The second operating state is off. Specifically, by filling pressurized gas into the first cavity 11 and the second cavity 12, the inner wall of the rubber sleeve 2 is relatively deformed until the inner wall is attached, and the flow channel 20 is closed. If the state is switched from the open state to the closed state, and the first cavity 11 and the second cavity 12 are simultaneously filled with the pressure gas, the closing speed is high, and if the state is switched from the closure state to the closed state, the pressure gas can be filled into the second cavity 12 only, so that the closing speed is high. The flexible cut-off device can be quickly closed, the working efficiency is high, and the flexible cut-off device is suitable for occasions needing quick closing.

The third operation is opening. Specifically, through the inlet and the outlet, the first cavity 11 and the second cavity 12 are decompressed, the rubber sleeve 2 is restored to deform, the flow channel 20 is opened, and the opening speed is high. If switch over to opening from the state of damming, only need first cavity 11 pressure release can, be applicable to some occasions that need open fast.

Furthermore, in the present invention, the pressurizing chamber may be filled with pressurized gas or pressurized liquid.

Further, in the invention, the inlet and the outlet can be two ports of an inlet and an outlet arranged on the outer shell 1, and a pipeline communicated with each port is provided with a control valve to control the pressurizing or the pressure relief of the pressurizing cavity; the inlet and outlet can also be arranged at an opening of the outer shell 1, and a control valve which can control the functions of stamping and pressure relief is arranged on a pipeline communicated with the opening. Preferably, the inlet and the outlet are arranged on the outer shell 1, and similarly, the inlet and the outlet can also be arranged on the rubber sleeve 2, as long as the inlet and the outlet can be communicated with the pressurizing cavity, and the specific arrangement position can be set according to actual requirements.

Further, in the present invention, the installation structures of the limiting portion 3 and the dividing portion 4 should be both used to ensure the sealing performance of the pressure chamber 10, and the specific arrangement of the sealing structure is not specifically described in the present invention, and is a conventional technical means in the art.

Specifically, if the rubber sleeve 2 adopts a structure that closes the flow channel by relative deformation, two limit portions 3 are provided, respectively at two pole limit positions, and if the rubber sleeve 2 adopts a structure that closes the flow channel by four-way relative deformation, four limit portions 3 are provided, respectively at four pole limit positions. As a better scheme, all limit positions can be provided with the limit parts 3, and the limit parts 3 can also be arranged at a certain limit position, so that the problems that the limit positions are difficult to deform and the pressure required by deformation is large are partially solved.

Further, in the present invention, the stopper portion 3 may be disposed along the entire length direction of the rubber sleeve 2, or may be disposed only in a part of the length of the closed position of the rubber sleeve 2, as long as the restriction of the deformation of the rubber sleeve 2 at the stopper position is achieved.

Further, in the present invention, the pressurizing chambers divided by the dividing portion 4 may be continuous or discontinuous, as long as the flow channel 10 is cut off after all the pressurizing chambers are inflated and deformed at the same time.

Further, in the present invention, the portion of the rubber sleeve 2 in the non-pressurized region divided by the dividing portion 4 may be smaller than or equal to the portion of the rubber sleeve 2 restricted by the stopper portion 3.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A flexible flow cut-off device, comprising;

an outer casing (1);

the rubber sleeve (2), the rubber sleeve (2) is provided with a water flow channel (20) inside; the outer shell (1) is arranged outside the rubber sleeve (2), and a pressurizing cavity (10) is formed between the inner wall of the outer shell (1) and the outer wall of the rubber sleeve (2);

the dividing part (4) is connected with the outer shell (1) and the rubber sleeve (2), is arranged in the pressurizing cavity (10), and divides the pressurizing cavity (10) into a plurality of independent cavities along the axial direction of the rubber sleeve (2);

and an inlet and an outlet which are respectively communicated with each cavity are also arranged.

2. A flexible shut off device as claimed in claim 1 further comprising:

the limiting part (3), the dividing part (4) is connected with the limiting part (3), the limiting part (3) is located in the circulation channel (20), extends along the inner wall of the rubber sleeve (2), and abuts against the rubber sleeve (2) at the position opposite to the dividing part (3) to deform.

3. The flexible cut-off device according to claim 2, wherein the limiting portion (3) comprises a horizontal portion (30) and a supporting portion (31), one end of the horizontal portion (30) is fixed on the outer housing (1), the other end of the horizontal portion (30) passes through the dividing portion (3) and the rubber sleeve (2) and extends into the flow channel (20) to be connected with the supporting portion (31), and the supporting portion (31) supports against the rubber sleeve (2).

4. A flexible cut-off device according to claim 3, wherein the abutting portion (31) comprises a bead (310) and a frame (311), the frame (311) covers the bead (310), the frame (311) extends along the axial direction of the rubber sleeve (2), and the bead (310) is connected to the horizontal portion (30).

5. A flexible cut-off device according to claim 3, wherein said horizontal portion (30) is a plurality of spaced bolt structures.

6. A flexible cut-off device according to claim 3, characterized in that the dividing part (4) is a rubber pad extending in the axial direction of the rubber sleeve (2), the rubber pad being fixed between the outer casing (1) and the rubber sleeve (2) by the horizontal part (30).

7. The flexible cut-off device as claimed in claim 2, wherein the limiting part comprises a pressing block (33) and a fastening piece (34), the fastening piece (34) is arranged at the position of the pressing block (33) close to the two end parts, and the outer shell (1), the dividing part (4), the rubber sleeve (2) and the pressing block (33) are fixed through the fastening piece (34).

8. A flexible cut-off device according to claim 1, characterized in that the inside of the partition (4) has a cambered surface matching the outer wall of the rubber sleeve (2), and the outside of the partition (4) has a cambered surface matching the inner wall of the outer casing (1).

9. The flexible cut-off device as claimed in claim 2, wherein the arc length L of the cross section of the rubber sleeve (2) abutted by the limiting part (3) has a value range of

D is the diameter of the rubber sleeve.

10. A flexible shut-off device according to claim 2, characterised in that the end of the limiting portion (3) located in the flow channel (20) is provided with a sealing element (32).

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