Hydrogen reduction metallurgy sealing valve

Abstract

The invention discloses a hydrogen reduction metallurgy sealing valve which comprises a valve body. The upper flange is in threaded connection with the upper end of the valve body and corresponds to the feeding hole; an assembling groove is formed in the lower end of the upper flange; the valve seat is embedded in the assembly groove; the valve element is rotationally connected to an inner cavity of the valve body to control opening and closing of the feeding opening; the upper end surface of the core body can be in compression fit with the inner wall surface of the lower end of the upper flange and the circumferential surface of the valve seat; one end of the connecting rod is vertically embedded at the lower end of the core; the transmission assembly comprises a transmission arm, and one end of the transmission arm is detachably connected with the other end of the connecting rod; the rotating assembly is in transmission connection with the other end of the transmission arm so as to drive the valve element to rotate. The built-in design is adopted for sealing of the valve body and the valve element, erosion of blanking to the sealing face is avoided, the transmission arm is additionally arranged on the valve element to serve as the anti-erosion design, the valve element is far away from the upper flange in the open state, and the process requirement of hydrogen metallurgy can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of control valves, and more particularly to a hydrogen reduction metallurgical sealing valve. Background Art

[0002] At present, there is a large gap in the control valves in the field of metallurgical smelting using hydrogen as a reducing agent in China. In the entire process, valves are a core component, including hydrogen reduction metallurgical sealing valves. In actual use, they are required to meet the national standard A-level sealing grade under high temperature environment, anti-erosion of the sealing surface, and structural requirements of anti-stacking and blockage.

[0003] Therefore, based on the above technical pain points, designing a sealing valve that can meet the needs of the hydrogen reduction metallurgical industry has become one of the key points in the green development of the metallurgical industry. Summary of the Invention

[0004] In view of this, the present invention provides a hydrogen reduction metallurgical sealing valve, which can meet the process requirements in the hydrogen reduction metallurgical process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A hydrogen reduction metallurgical sealing valve, comprising:

[0007] A valve body, wherein the upper and lower ends of the valve body are respectively provided with a corresponding feed inlet and a discharge outlet;

[0008] An upper flange, the upper flange being threadedly connected to the upper end of the valve body and corresponding to the feed port; a mounting groove is formed at the lower end of the upper flange;

[0009] a valve seat, the valve seat being embedded in the assembly groove;

[0010] A valve core, the valve core being rotatably connected to the inner cavity of the valve body to control the opening and closing of the feed port; the valve core comprising a core body and a connecting rod, the upper end surface of the core body being press-fitted with the inner wall surface of the lower end of the upper flange and the circumferential surface of the valve seat to seal the feed port; one end of the connecting rod being vertically embedded in the lower end of the core body;

[0011] A transmission assembly, the transmission assembly comprising a transmission arm, one end of the transmission arm being detachably connected to the other end of the connecting rod;

[0012] A rotating assembly is connected to the other end of the transmission arm to drive the rotation of the valve core.

[0013] The beneficial effect of the technical solution of the present invention is that the core body can be pressed and matched with the inner wall surface of the upper flange and the peripheral surface of the valve seat to achieve sealing, so that the sealing of the valve seat and the valve core is realized in the valve body. The built-in design avoids the erosion of the sealing surface by blanking. The rotation of the valve core is transmitted through the transmission arm, so that the valve core can be far away from the upper flange and the feed port in the open state, which will not affect the blanking of the valve body and ensure efficient production.

[0014] Preferably, the upper end surface of the core body has a conical valve core surface, and a pressure ring is sleeved on the outer wall of its upper end. The conical valve core surface can form a conical seal with the inward conical surface of the inner wall of the lower end of the upper flange. A sealing ring is provided between the side wall of the upper end of the core body and the pressure ring, and can form an eccentric sealing surface with the valve seat. The valve core, valve seat, and upper flange can all form sealing surfaces, meeting the process requirements of hydrogen metallurgy and ensuring a good sealing effect.

[0015] Preferably, an assembly cavity is defined at the lower end of the core body, one end of the connecting rod is embedded in the assembly cavity, and a compression sleeve is provided between the outer wall of the connecting rod and the inner wall of the core body relative to the assembly cavity. The end surface of the connecting rod located within the assembly cavity is hemispherical. The hemispherical design of the connecting rod allows for slight movement within the assembly cavity, allowing the valve core to rotate at a certain angle when closed, effectively improving the fit between the valve core and the valve seat and ensuring sealing performance.

[0016] Preferably, the transmission arm is arranged perpendicularly to the connecting rod, one end of the transmission arm is provided with a through-hole, the end of the connecting rod away from the core body extends through the through-hole and is fastened by a nut; a butterfly spring is provided between the side wall of the transmission arm and the end face of the compression sleeve away from the core body. The rotational force of the rotating assembly drives the transmission arm to rotate the valve core, and the transmission arm is used to control the opening and closing of the valve core, so that the valve core can be separated from the upper flange after opening the feed port, ensuring that the material is dropped without eroding the sealing surface of the valve core, thereby ensuring the performance of the sealing valve.

[0017] Preferably, the rotating assembly includes a mounting seat, a rotating shaft, and a bearing. The mounting seat is fixed to the outer wall of the valve body. The rotating shaft is rotatably connected to the inner cavity of the mounting seat, with one end of the rotating shaft extending into the inner cavity of the valve body and fastened to the end of the transmission arm away from the connecting rod by a bolt. The outer ring of the bearing is embedded in the inner wall of the mounting seat, and its inner ring mates with the outer wall of the rotating shaft. The mounting seat is used to install the rotating shaft, and the rotational motion of the mounting seat is converted into linear motion of the transmission arm, thereby realizing the rotation of the valve core.

[0018] Preferably, a packing is provided between the outer wall of the rotating shaft and the inner wall of the mounting seat; and a gland is detachably connected to the end of the mounting seat away from the valve body. The packing design prevents gas from leaking through the gap between the rotating shaft and the mounting seat.

[0019] Preferably, a limiting ring is embedded between the inner wall of the mounting seat near one end of the valve body and the outer wall of the rotating shaft. The limiting ring limits the rotation angle of the rotating shaft so that it rotates within the range of 0 to 90 degrees, thereby realizing the opening and closing of the valve core to the valve body feed port.

[0020] Preferably, a sealing gasket is provided between the upper end surface of the valve seat and the inner wall of the assembly groove of the upper flange; and a sealing ring is embedded between the upper flange and the valve seat to ensure a sealing effect between the upper flange, the valve seat, and the valve body to prevent gas leakage.

[0021] Preferably, the valve body further comprises an air inlet flange, which is detachably connected to the side wall of the valve body, and through which production gas is transported into the valve body.

[0022] Preferably, a lower flange is welded to the end of the valve body corresponding to the discharge port; the angle β between the sidewall of the lower flange and the sidewall of the valve body is greater than the minimum blanking angle α of the inner wall of the valve body. Both angles in the transition section between the valve body and the lower flange are greater than the natural blanking angle of steel particles, ensuring that blanking does not accumulate excessively within the valve body and effectively preventing interference with the core due to blanking.

[0023] It can be seen from the above technical solution that compared with the prior art, the present invention discloses a hydrogen reduction metallurgical sealing valve, which adopts an internal design for the seal between the valve body and the valve core, thereby avoiding the erosion problem of the sealing surface caused by falling materials, and the valve core also considers the anti-erosion design. By adding the design of the transmission arm, the valve core is far away from the upper flange inlet when in the open state, which can meet the process requirements of hydrogen metallurgy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 A longitudinal sectional schematic diagram of the sealing valve provided by the present invention;

[0026] Figure 2 A cross-sectional schematic diagram of the sealing valve provided by the present invention;

[0027] Figure 3 A cross-sectional view of the valve core provided by the present invention;

[0028] Figure 4 A cross-sectional view of the valve core and the upper flange of the valve provided by the present invention after closing;

[0029] Figure 5 This is a schematic diagram of the valve core sealing surface structure provided by the present invention.

[0030] in,

[0031] 1-valve body;

[0032] 2-upper flange; 21-sealing ring; 22-inward conical surface; 23-upper flange inlet;

[0033] 3-valve core; 31-core body; 311-valve core conical surface; 32-sealing ring; 321-eccentric sealing surface; 33-pressing ring; 34-pressing sleeve; 35-connecting rod; 351-hemispherical surface;

[0034] 4- transmission assembly; 41- transmission arm; 42- butterfly spring; 43- gasket; 44- nut;

[0035] 5-rotating assembly; 51-rotating shaft; 52-limiting ring; 53-bearing; 54-filler; 55-gland; 56-bolt; 57-mounting seat;

[0036] 6-valve seat;

[0037] 7-Sealing gasket;

[0038] 8-lower flange;

[0039] 9-Inlet flange. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0041] Participate in the Figures 1 to 5 , an embodiment of the present invention discloses a hydrogen reduction metallurgical sealing valve, comprising:

[0042] The valve body 1 has a feed inlet and a discharge inlet at the upper and lower ends thereof.

[0043] The upper flange 2 is threadedly connected to the upper end of the valve body 1 and corresponds to the feed inlet; the lower end of the upper flange 2 is provided with a mounting groove; the upper flange inlet 23 of the upper flange 2 is connected to the feed inlet of the valve body 1;

[0044] The valve seat 6 is embedded in the assembly groove;

[0045] The valve core 3 is rotatably connected to the inner cavity of the valve body 1 to control the opening and closing of the feed port. The valve core 3 includes a core body 31 and a connecting rod 35. The upper end surface of the core body 31 can be tightly fitted with the inner wall surface of the lower end of the upper flange 2 and the circumference of the valve seat 6 to seal the feed port. One end of the connecting rod 35 is vertically embedded in the lower end of the core body 31.

[0046] The transmission assembly 4 includes a transmission arm 41, one end of the transmission arm 41 is detachably connected to the other end of the connecting rod 35;

[0047] The rotating assembly 5 is connected to the other end of the transmission arm 41 to drive the rotation of the valve core 3.

[0048] The tight fit between the valve core end face, the inner wall of the upper flange and the peripheral surface of the valve seat can achieve sealing at the valve body feed port.

[0049] In this embodiment, the upper end face of the core body 31 has a valve core conical surface 311 and a pressure ring 33 is provided on the outer wall of its upper end; the valve core conical surface 311 can form a conical surface seal with the inward conical surface 22 of the inner wall of the lower end of the upper flange 2; a sealing ring 32 is provided between the upper end side wall of the core body 31 and the pressure ring 33 and can form an eccentric sealing surface 321 with the valve seat 6.

[0050] like Figure 1 As shown in the figure, the valve core is eccentric relative to the center of the valve body, and the opening and closing of the valve body feed port are achieved by rotating the valve core 90 degrees; Figure 3 As shown, the upper end of the core body forms a valve core conical surface, the upper end of the core body is provided with a groove on the circumferential side of the valve core conical surface, and the outer wall of the upper end of the valve core is provided with a pressure ring; Figure 4 As shown, when the valve core is in the closed state, the conical sealing surface of the valve core and the inward conical surface of the lower end of the upper flange form a conical sealing structure; Figure 5 As shown, the valve core can be closed to compress the pressure ring, and after compression, it can squeeze the sealing ring and the valve seat to form an eccentric sealing surface. The eccentric design prevents the valve core and the valve seat from interfering with each other during the opening and closing process, thereby reducing the wear of the sealing surfaces between the valve core and the valve seat and between the valve core and the upper flange, and improving the performance of the sealing valve.

[0051] The valve core seal of this embodiment adopts an internal design and has two layers of sealing mechanisms. One is the eccentric sealing surface formed between the valve seat and the valve core, and the other is the conical sealing structure formed between the valve core and the upper flange. The two internal sealing designs avoid the possible erosion of the sealing surface caused by falling materials, effectively protect the sealing surface, and provide the possibility of achieving the national standard A-level sealing grade.

[0052] In order to further optimize the above technical solution, an assembly cavity is opened at the lower end of the core body 31, one end of the connecting rod 35 is embedded in the assembly cavity, and a pressing sleeve 34 is provided between the outer wall of the connecting rod 35 and the inner wall of the assembly cavity relative to the core body 31; the end face of the connecting rod 35 located in the assembly cavity is a hemispherical surface 351.

[0053] The sealing performance between the connecting rod and the core body is achieved by using a compression sleeve. The compression sleeve adopts a flexible structure. The hemispherical surface of the connecting rod can make the core body have a certain slight rotational offset when closed, which can effectively improve the fit between the valve core and the valve seat and ensure the sealing performance of the valve body in the closed state.

[0054] In other specific embodiments, the transmission arm 41 is arranged vertically to the connecting rod 35, a through hole is opened at one end of the transmission arm 41, and the end of the connecting rod 35 away from the core body 31 passes through the through hole and is fastened by a lock nut 44; a butterfly spring 42 is provided between the side wall of the transmission arm 41 and the end face of the pressing sleeve 34 away from the core body 31.

[0055] like Figure 4 As shown, the lower end of the connecting rod passes through the through hole on the transmission arm, and the nut is sleeved on the end of the connecting rod so that the butterfly spring is compressed between the transmission arm and the pressing sleeve. The butterfly spring ensures the sealing performance between the pressing sleeve and the connecting rod, and between the pressing sleeve and the core body; at the same time, the elastic force of the butterfly spring can make the core body have a moving offset, thereby ensuring the sealing between the core body and the valve seat and the upper flange; this embodiment uses the lever principle, and the transmission arm drives the connecting rod to rotate within a range of 90 degrees to realize the opening and closing of the core body to the valve body outlet.

[0056] In order to further optimize the above technical solution, a gasket 43 is provided between the nut 44 and the side wall of the transmission arm 41 away from the butterfly spring 42 .

[0057] In other specific embodiments, in order to ensure the sealing effect of the valve body, a sealing gasket 7 is provided between the upper end surface of the valve seat 6 and the inner wall of the assembly groove of the upper flange 2; a sealing ring 21 is embedded between the upper flange 2 and the valve seat 6.

[0058] In this embodiment, an air inlet flange 9 is further included, which is detachably connected to the side wall of the valve body 1. In actual production, production gas is input into the valve body through the air inlet flange.

[0059] In order to further optimize the above technical solution, a lower flange 8 is welded to the end of the valve body 1 corresponding to the discharge port; the angle β between the side wall of the lower flange 8 and the side wall of the valve body 1 is greater than the minimum blanking angle α of the inner wall of the valve body 1.

[0060] like Figure 1 As shown in the figure, the angle β between the lower flange and the transition section at the lower end of the valve body needs to be greater than the minimum blanking angle α of the valve body. This design can prevent materials such as steel particles from accumulating in the valve body, thereby achieving an anti-piling effect on the valve body.

[0061] In this embodiment, the rotating assembly 5 includes a mounting seat 57, a rotating shaft 51 and a bearing 53. The mounting seat 57 is fixed to the outer wall of the valve body 1; the rotating shaft 51 is rotatably connected to the inner cavity of the mounting seat 57 and one end of the rotating shaft 51 penetrates into the inner cavity of the valve body 1 and is fastened to the end of the transmission arm 41 away from the connecting rod 35 by a bolt 56; the outer ring of the bearing 53 is embedded in the inner wall of the mounting seat 57, and its inner ring cooperates with the outer wall of the rotating shaft 51.

[0062] like Figure 2 As shown, the rotation is achieved through the bearing, and the rotation of the shaft is converted into the linear motion of the transmission arm, thereby realizing the opening and closing of the core body.

[0063] In order to further optimize the above technical solution, prevent gas leakage from the gap between the rotating shaft and the mounting seat, and ensure the sealing performance between the rotating shaft and the valve body, a packing 54 is provided between the outer wall of the rotating shaft 51 and the inner wall of the mounting seat 57; the end of the mounting seat 57 away from the valve body 1 is detachably connected to a pressure cover 55.

[0064] The gland is mounted on the end of the shaft away from the valve body. The gland is detachably connected to the mounting seat. The mounting seat is used as a stuffing box. The rotation of the shaft is achieved by the bearing. The gap between the shaft and the mounting seat is sealed by the stuffing, which effectively ensures the sealing performance between the shaft and the valve body.

[0065] In order to further optimize the above technical solution and limit the rotation angle of the shaft so that the core can only rotate within the range of 0 to 90 degrees, a limiting ring 52 is embedded between the inner wall of the mounting seat 57 close to one end of the valve body 1 and the outer wall of the shaft 51.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0067] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrogen reduction metallurgical sealing valve, characterized in that: include: A valve body (1), wherein the upper and lower ends of the valve body (1) are respectively provided with a corresponding feed inlet and a discharge outlet; An upper flange (2), the upper flange (2) being threadedly connected to the upper end of the valve body (1) and corresponding to the feed port; a mounting groove is provided at the lower end of the upper flange (2); a valve seat (6), wherein the valve seat (6) is embedded in the assembly groove; A valve core (3), the valve core (3) is rotatably connected to the inner cavity of the valve body (1) to control the opening and closing of the feed port; the valve core (3) includes a core body (31) and a connecting rod (35); the upper end surface of the core body (31) can be pressed and matched with the inner wall surface of the lower end of the upper flange (2) and the peripheral surface of the valve seat (6) to seal the feed port; one end of the connecting rod (35) is vertically embedded in the lower end of the core body (31); A transmission assembly (4), the transmission assembly (4) comprising a transmission arm (41), one end of the transmission arm (41) being detachably connected to the other end of the connecting rod (35); A rotating assembly (5) is connected to the other end of the transmission arm (41) to drive the rotation of the valve core (3).

2. A hydrogen reduction metallurgical sealing valve according to claim 1, characterized in that: The upper end face of the core body (31) has a valve core conical surface (311) and a pressure ring (33) is sleeved on the outer wall of the upper end; the valve core conical surface (311) can form a conical surface seal with the inward conical surface (22) of the inner wall of the lower end of the upper flange (2); a sealing ring (32) is provided between the side wall of the upper end of the core body (31) and the pressure ring (33), and can form an eccentric sealing surface (321) with the valve seat (6).

3. The hydrogen reduction metallurgical sealing valve according to claim 2, characterized in that: An assembly cavity is provided at the lower end of the core body (31), one end of the connecting rod (35) is embedded in the assembly cavity, and a pressing sleeve (34) is provided between the outer wall of the connecting rod (35) and the inner wall of the core body (31) relative to the assembly cavity; the end surface of the connecting rod (35) located in the assembly cavity is a hemispherical surface (351).

4. The hydrogen reduction metallurgical sealing valve according to claim 3, characterized in that: The transmission arm (41) is arranged perpendicularly to the connecting rod (35), a through hole is provided at one end of the transmission arm (41), an end of the connecting rod (35) away from the core (31) passes through the through hole and is fastened by a nut (44); a butterfly spring (42) is provided between the side wall of the transmission arm (41) and the end face of the pressing sleeve (34) away from the core (31).

5. The hydrogen reduction metallurgical sealing valve according to claim 1, characterized in that: The rotating assembly (5) includes a mounting seat (57), a rotating shaft (51) and a bearing (53), wherein the mounting seat (57) is fixed to the outer wall of the valve body (1); the rotating shaft (51) is rotatably connected to the inner cavity of the mounting seat (57) and one end of the rotating shaft (51) penetrates into the inner cavity of the valve body (1) and is fastened to the end of the transmission arm (41) away from the connecting rod (35) by a bolt (56); the outer ring of the bearing (53) is embedded in the inner wall of the mounting seat (57), and the inner ring thereof cooperates with the outer wall of the rotating shaft (51).

6. The hydrogen reduction metallurgical sealing valve according to claim 5, characterized in that: A packing (54) is provided between the outer wall of the rotating shaft (51) and the inner wall of the mounting seat (57); and a pressure cover (55) is detachably connected to one end of the mounting seat (57) away from the valve body (1).

7. The hydrogen reduction metallurgical sealing valve according to claim 6, characterized in that: A limiting ring (52) is embedded between the inner wall of the mounting seat (57) close to one end of the valve body (1) and the outer wall of the rotating shaft (51).

8. The hydrogen reduction metallurgical sealing valve according to claim 1, characterized in that: A sealing gasket (7) is provided between the upper end surface of the valve seat (6) and the inner wall of the assembly groove of the upper flange (2); and a sealing ring (21) is embedded between the upper flange (2) and the valve seat (6).

9. The hydrogen reduction metallurgical sealing valve according to claim 1, characterized in that: It also includes an air inlet flange (9), which is detachably connected to the side wall of the valve body (1).

10. The hydrogen reduction metallurgical sealing valve according to claim 9, characterized in that: A lower flange (8) is welded to the end of the valve body (1) corresponding to the discharge port; an angle β between the side wall of the lower flange (8) and the side wall of the valve body (1) is greater than the minimum blanking angle α of the inner wall of the valve body (1).

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