Three-way shear switching direction control valve

Abstract

A three-way shear switching direction control valve is characterized in that a valve body is a three-way valve body with a medium inlet end A and two medium outlet ends B and C, a cock body is arranged in the valve body, the central axis of a flow channel port end D and the central axis of a flow channel port end F form an included angle of 145 degrees, the cock body is matched with the valve body in a rotating mode, a valve seat is arranged between the valve body and the cock body, and the valve body and the cock body are matched in a metal sealing mode. An upper sealing ring of the upper sealing structure is elastically matched with an elastic sealing seat, and elastic pre-tightening force is provided through a three-piece ring and a fastener; the lower sealing ring of the lower sealing structure obtains elastic pre-tightening force in a similar mode, a taper plug body of the valve and an upper cavity and a lower cavity of a valve body are primarily sealed through multiple heavy metal seals, and the situation that a switch is affected by medium accumulation and blockage is prevented. The lower end of the valve is provided with the taper elastic sealing ring, and the upper end of the valve is combined with the elastic sealing ring. And good sealing performance and elasticity are realized.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a three-way shear reversing control valve. Background Art

[0002] The existing three-way switching valve used to switch the medium containing impurities (solid-liquid mixture after the treatment of waste materials such as iron sheets, plastic sheets, slag, etc.) is easy to block the valve body during use, and the transition of the three-way is not smooth, and generally uses elbows less than 130°. In addition, the valve requires that there should be no grooves and local protrusions in the pipeline, otherwise it is easy for things such as iron sheets to enter the gap and cause a large amount of accumulation and blockage of the flow channel, affecting the normal operation of the valve. Summary of the invention

[0003] In order to solve the technical defects in the prior art, the present invention provides a three-way shear reversing control valve.

[0004] The technical solution adopted by the present invention is: a three-way shear reversing control valve, including a valve body, the valve body is a three-way valve body with a medium inlet end A and two medium outlet ends B and C, the valve body is provided with a plug body, the plug body has a flow channel end D and an end F, the center axis of the flow channel end D and the end F form an angle of 145°, the plug body and the valve body are rotatably matched, the plug body includes a first position in which the A end of the valve body is connected to the B end and a second position in which the A end of the valve body is connected to the C end after the plug body rotates counterclockwise by 145°, and the valve body and the plug body also include: A valve seat, wherein the valve seat and the plug body are metal-sealed together; An upper sealing structure, wherein the upper sealing structure comprises an upper sealing ring, an elastic sealing seat is further provided on the upper sealing ring, the upper sealing ring and the elastic sealing seat are elastically matched, a sealing seat pressure ring is provided on the elastic sealing seat, a three-open ring is connected to the valve body above the sealing seat pressure ring, a fastener is provided on the three-open ring, and the fastener cooperates downward with the sealing seat pressure ring to provide an elastic pre-tightening force between the upper sealing ring and the elastic sealing seat; The lower sealing structure comprises a lower sealing ring, a sealing pressure ring is arranged on the lower sealing ring, a three-open ring is connected to the valve body below the sealing pressure ring, a fastener is arranged on the three-open ring, and the fastener cooperates with the sealing seat pressure ring upward to provide elastic pre-tightening force for the lower sealing ring.

[0005] The plug body and the valve seat are hardened, and a knife-edge structure is formed between the flow channel of the plug body and the valve seat to shear ordinary iron sheets, plastic sheets, and braids in the medium to ensure that there is no jamming during the switching process.

[0006] The sealing surface of the valve seat is a conical surface, and the conical surface is completely fitted with the outer circle of the plug body.

[0007] The sealing surface of the valve seat is higher than the plane of the inner wall of the valve body, so that a gap of 0.15-0.25 mm exists between the outer circle of the plug body and the inner wall of the valve body.

[0008] The end faces of the upper sealing ring and the lower sealing ring are both U-shaped structures, and extended ends are formed at both ends of the U-shaped structure. The extended ends of the upper sealing ring are respectively placed between the plug body and the valve body and the elastic sealing seat and the valve body, and the extended ends of the lower sealing ring are respectively placed between the plug body and the valve body and the sealing pressure ring and the valve body.

[0009] An adjusting screw is also provided at the bottom of the valve body, and the adjusting screw contacts and cooperates with the bottom of the plug body. When the plug body is stuck, the adjusting screw lifts the plug body, compresses the upper sealing ring and the elastic sealing seat, and slightly separates the conical sealing pair of the plug body from the valve seat.

[0010] A lower cover is arranged at the bottom of the valve body, an end cover is arranged on the lower cover, and the adjusting screw rod is arranged on the end cover.

[0011] The upper sealing ring and the lower sealing ring are both of tapered structure.

[0012] The plug body is connected with a valve stem, and the valve stem is connected with an electric worm gear and an electric actuator.

[0013] A valve cover is arranged on the valve body, and a packing structure is arranged between the valve cover and the valve stem.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a three-way shear reversing control valve, including a valve body, which is a three-way valve body with one medium inlet A end and two medium outlets B and C ends, a plug body is arranged in the valve body, the plug body has a flow channel D end and an F end, the center axes of the flow channel D end and the F end form an angle of 145°, the plug body and the valve body are rotatably matched, the plug body includes a first position in which the A end of the valve body is connected to the B end and a first position in which the A end of the valve body is connected to the C end after the plug body is rotated 145° counterclockwise, and the valve body and the plug body also include: a valve seat, a metal seal is formed between the valve seat and the plug body; an upper sealing structure includes an upper sealing ring, an elastic sealing seat is also arranged on the upper sealing ring, and the upper sealing ring and the elastic sealing seat are elastically matched, The elastic sealing seat is provided with a sealing seat pressure ring, and the valve body above the sealing seat pressure ring is connected with three open rings, and the three open rings are provided with fasteners, which cooperate with the sealing seat pressure ring downward to provide elastic pre-tightening force between the upper sealing ring and the elastic sealing seat; the lower sealing structure includes a lower sealing ring, and the lower sealing ring is also provided with a sealing pressure ring, and the valve body below the sealing pressure ring is connected with three open rings, and the three open rings are provided with fasteners, and the fasteners cooperate with the sealing seat pressure ring upward to provide elastic pre-tightening force for the lower sealing ring. The cone plug body and the upper and lower cavities of the valve body of the present invention are initially sealed with multiple metal seals to prevent a large amount of easily accumulated and blocked media from entering the upper and lower cavities to cause the valve switch to not move. The lower end of the cone plug body adopts a tapered elastic sealing ring to achieve complete sealing with the valve body and the plug body. The upper end of the cone plug body adopts a combination of a tapered elastic sealing ring and an elastic sealing ring to achieve both elasticity and sealing performance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the structure of the stopcock body of the present invention.

[0018] Figure 4 It is a schematic diagram of the sealing seat pressure ring structure of the present invention.

[0019] Figure 5 It is a schematic diagram of the structure of the elastic sealing seat of the present invention.

[0020] Figure 6 It is a schematic diagram of the upper sealing ring structure of the present invention.

[0021] Figure 7 This is a schematic diagram of the lower sealing ring structure of the present invention.

[0022] Figure 8 It is an enlarged view of the structure at M of the present invention.

[0023] Fig. 9This is an enlarged view of the N structure of the present invention.

[0024] Among them, 1-valve body, 2-plug body, 3-upper sealing ring, 4-elastic sealing seat, 5-sealing seat pressure ring, 6-three-open ring, 7-lower sealing ring, 8-sealing pressure ring, 9-adjusting screw, 11-valve seat, 12-lower cover, 13-end cover. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] A three-way shear reversing control valve comprises a valve body 1, wherein the valve body 1 is a three-way valve body having a medium inlet end A and two medium outlet ends B and C, wherein a plug body 2 is arranged inside the valve body 1, wherein the plug body 2 has a flow channel end D and an end F, wherein the center axes of the flow channel end D and the end F form an angle of 145°, wherein the plug body 2 is rotationally matched with the valve body 1, and the present invention adopts a conical plug body that rotates 145° for switching, wherein the flow channel transition is smooth and not easy to be blocked, wherein the plug body 2 comprises a first position that connects the A end and the B end of the valve body 1, and a second position that connects the A end and the C end of the valve body 1 after the plug body 2 rotates 145° counterclockwise, wherein a valve seat 11 is further arranged between the valve body 1 and the plug body 2, wherein the valve seat 11 is metal-sealed with the plug body 2; an upper sealing structure, wherein the upper sealing structure comprises an upper sealing ring 3, wherein the upper The sealing ring 3 is also provided with an elastic sealing seat 4, and the upper sealing ring 3 and the elastic sealing seat 4 are elastically matched, and the elastic sealing seat 4 is provided with a sealing seat pressure ring 5, and the valve body 1 above the sealing seat pressure ring 5 is connected with a three-open ring 6, and the three-open ring 6 is provided with a fastener, and the fastener cooperates with the sealing seat pressure ring 5 downward to provide elastic pre-tightening force between the upper sealing ring 3 and the elastic sealing seat 4, and the upper end of the rotary body adopts a tapered elastic sealing ring and an elastic sealing seat combination to achieve both elasticity and sealing performance requirements; the lower sealing structure, the lower sealing structure includes a lower sealing ring 7, and the lower sealing ring 7 is provided with a sealing pressure ring 8, and the valve body 1 below the sealing pressure ring 8 is connected with a three-open ring 6, and the three-open ring 6 is provided with a fastener, and the fastener cooperates with the sealing seat pressure ring 5 upward to provide elastic pre-tightening force for the lower sealing ring 7. The lower end of the taper plug body adopts a tapered elastic sealing ring to achieve complete sealing with the valve body and the plug body.

[0027] The plug body 2 and the valve seat 11 are hardened, and a knife-edge structure is formed between the flow channel of the plug body 2 and the valve seat 11 to shear ordinary iron sheets, plastic sheets, and braids in the medium to ensure that there is no jamming during the switching process.

[0028] The sealing surface of the valve seat 11 is a conical surface, which is completely fitted with the outer circle of the plug body 2, forming a high sealing level and ensuring the reliability of the seal. The sealing surface of the valve seat 11 is higher than the plane of the inner wall of the valve body 1, so that there is a gap of 0.15-0.25mm between the outer circle of the plug body 2 and the inner wall of the valve body 1, and there is no space for inclusion and clogging of debris between the gaps, preventing the middle cavity from being blocked. After the plug body and the valve seat are processed, they are ground together to ensure the fit of the two vertebrae and the reliability of the sealing effect.

[0029] The end faces of the upper sealing ring 3 and the lower sealing ring 7 are both U-shaped structures, and extended ends are formed at both ends of the U-shaped structure. The extended ends of the upper sealing ring 3 are respectively placed between the plug body 2 and the valve body 1 and the elastic sealing seat 4 and the valve body 1, and the extended ends of the lower sealing ring 7 are respectively placed between the plug body 2 and the valve body 1 and the sealing pressure ring 8 and the valve body 1.

[0030] The bottom of the valve body 1 is also provided with an adjusting screw 9, which contacts and cooperates with the bottom of the plug body 2. The bottom of the valve body 1 is provided with a lower cover 12, and the lower cover 12 is provided with an end cover 13, and the adjusting screw 9 is arranged on the end cover 13. When the plug body 2 is stuck, the plug body 2 is lifted up by the adjusting screw 9, and the upper sealing ring 3 and the elastic sealing seat 4 are compressed, so that the conical sealing pair of the plug body 2 is slightly separated from the valve seat 11 to ensure flexible movement. After multiple switching operations, the inclusions between the sealing pairs can be cleared, and then the adjusting screw is returned to its original position. The switch will be flexible and light again, and the sealing level is higher.

[0031] The plug body 2 is connected to a valve stem, and the valve stem is connected to an electric worm gear and an electric actuator. The lower shaft end of the valve stem is double-sealed with an O-ring seal and a gasket to ensure no leakage. A large torque worm gear box plus an electric device is selected to ensure flexible and reliable switching, and flexible switching without blocking.

[0032] The valve body 1 is provided with a valve cover, and a packing structure is provided between the valve cover and the valve stem. The upper shaft of the valve stem and the packing box are double-sealed with an O-ring and a packing to ensure no leakage. The packing can also be replaced and pre-tightened online.

[0033] Technical personnel should note: Although the present invention has been described according to the above-mentioned specific implementation methods, the inventive concept of the present invention is not limited to this invention. Any modification using the inventive concept will be included in the scope of protection of this patent. The up and down descriptions in the specification are based on the orientation descriptions in the main figure.

[0034] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A three-way shear reversing control valve, comprising a valve body (1), wherein the valve body (1) is a three-way valve body having a medium inlet end A and two medium outlet ends B and C, characterized in that: The valve body (1) is provided with a plug body (2) therein, the plug body (2) having a flow channel opening end D and an end F, the center axes of the flow channel opening end D and the end F forming an angle of 145°, the plug body (2) and the valve body (1) are rotationally matched, the plug body (2) comprising a first position in which the end A of the valve body (1) is connected to the end B, and a second position in which the end A of the valve body (1) is connected to the end C after the plug body (2) is rotated 145° counterclockwise, and between the valve body (1) and the plug body (2) there is also: A valve seat (11), wherein the valve seat (11) and the plug body (2) are metal-sealed together; An upper sealing structure, wherein the upper sealing structure comprises an upper sealing ring (3), the upper sealing ring (3) is further provided with an elastic sealing seat (4), the upper sealing ring (3) and the elastic sealing seat (4) are elastically matched, the elastic sealing seat (4) is provided with a sealing seat pressure ring (5), a three-open ring (6) is connected to the valve body (1) above the sealing seat pressure ring (5), the three-open ring (6) is provided with a fastener, the fastener cooperates downward with the sealing seat pressure ring (5) to provide an elastic pre-tightening force between the upper sealing ring (3) and the elastic sealing seat (4); A lower sealing structure, the lower sealing structure comprising a lower sealing ring (7), a sealing pressure ring (8) being provided on the lower sealing ring (7), a three-open ring (6) being connected to the valve body (1) below the sealing pressure ring (8), a fastener being provided on the three-open ring (6), the fastener cooperating upward with the sealing seat pressure ring (5) to provide elastic pre-tightening force for the lower sealing ring (7).

2. The three-way shear reversing control valve according to claim 1, characterized in that: The plug body (2) and the valve seat (11) are hardened, and a knife-edge structure is formed between the flow channel opening of the plug body (2) and the valve seat (11), which cuts ordinary iron sheets, plastic sheets, and braided fabrics in the medium to ensure that there is no jamming during the switching process.

3. The three-way shear reversing control valve according to claim 1, characterized in that: The sealing surface of the valve seat (11) is a conical surface, and the conical surface is completely fitted with the outer circle of the plug body (2).

4. The three-way shear reversing control valve according to claim 3, characterized in that: The sealing surface of the valve seat (11) is higher than the plane of the inner wall of the valve body (1), so that a gap of 0.15-0.25 mm exists between the outer circle of the plug body (2) and the inner wall of the valve body (1).

5. The three-way shear reversing control valve according to claim 1, characterized in that: The end faces of the upper sealing ring (3) and the lower sealing ring (7) are both U-shaped structures, and the two ends of the U-shaped structure are formed with extended ends. The extended ends of the upper sealing ring (3) are respectively placed between the plug body (2) and the valve body (1) and the elastic sealing seat (4) and the valve body (1), and the extended ends of the lower sealing ring (7) are respectively placed between the plug body (2) and the valve body (1) and the sealing pressure ring (8) and the valve body (1).

6. The three-way shear reversing control valve according to claim 1, characterized in that: The bottom of the valve body (1) is also provided with an adjusting screw (9), which contacts and cooperates with the bottom of the plug body (2). When the plug body (2) is stuck, the adjusting screw (9) lifts up the plug body (2), compresses the upper sealing ring (3) and the elastic sealing seat (4), and causes the conical sealing pair of the plug body (2) to slightly separate from the valve seat (11).

7. The three-way shear reversing control valve according to claim 6, characterized in that: A lower cover (12) is provided at the bottom of the valve body (1), an end cover (13) is provided on the lower cover (12), and the adjusting screw (9) is arranged on the end cover (13).

8. The three-way shear reversing control valve according to claim 5, characterized in that: The upper sealing ring (3) and the lower sealing ring (7) are both of tapered structures.

9. The three-way shear reversing control valve according to claim 1, characterized in that: The plug body (2) is connected to a valve stem, and the valve stem is connected to an electric worm gear and an electric actuator.

10. The three-way shear reversing control valve according to claim 1, characterized in that: The valve body (1) is provided with a valve cover, and a packing structure is provided between the valve cover and the valve stem.

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