High-toughness duplex stainless steel valve

Abstract

The utility model relates to a high-toughness duplex stainless steel valve, which belongs to the technical field of valves and comprises a valve main body, annular connecting blocks are fixedly connected to two sides of the valve main body, butting pipes are inserted into the inner sides of the annular connecting blocks, and butting pieces are fixedly connected to the outer sides of the butting pipes. A connecting assembly used for sealing is installed on the outer side of the butt joint pipe, and a positioning assembly used for being connected with the butt joint pipe is installed on the outer side of the valve body. The positioning assembly comprises four limiting plates hinged to the outer sides of the two abutting pieces through hinges correspondingly, four fixing cylinders fixed to the outer sides of the two annular connecting blocks correspondingly, and connecting holes formed in the tops of the limiting plates. According to the high-toughness duplex stainless steel valve, the toughness and corrosion resistance of the valve can be further improved through the characteristics of duplex stainless steel, meanwhile, the sealing stability can be improved, and meanwhile the overall connecting mode is very simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-toughness duplex stainless steel valve. Background Art

[0002] Duplex stainless steel has the characteristics of both austenitic and ferritic stainless steel. Compared with ferrite, it has higher plasticity and toughness, no room temperature brittleness, and significantly improved intergranular corrosion resistance and welding performance. At the same time, it still maintains the 475℃ brittleness and high thermal conductivity of ferritic stainless steel, has superplasticity and excellent pitting resistance, and can be used in the manufacture and use of valves.

[0003] According to the corrosion-resistant and high-toughness sealed butterfly valve body disclosed in Chinese patent announcement No. CN213871292U, the patent sets a screw to drive the two U-shaped baffles to move toward the side close to each other, so that the two sealing rings move into the two card covers respectively to achieve sealing fit, and the card installation work can be completed. From an operational point of view, this connection method is very convenient and can quickly complete the installation and connection of the pipeline. However, there are still certain shortcomings in actual use. Since the patent only uses the outer thread of the screw to play a positioning role, and the self-locking effect of a single thread is not stable, the seal at the connection is easy to loosen during long-term use, resulting in its overall sealing performance being affected, which is not conducive to the normal operation of the valve. In this regard, the present application provides a high-toughness duplex stainless steel valve to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a high-toughness duplex stainless steel valve, which has the advantages of being able to utilize the characteristics of duplex stainless steel to further improve the toughness and corrosion resistance of the valve while also improving the stability of the seal, thereby solving the problem of poor sealing stability performance of the existing high-toughness valve body during long-term use.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of being able to utilize the characteristics of duplex stainless steel to further improve the toughness and corrosion resistance of the valve while also improving the stability of the seal, the utility model provides the following technical solutions: a high-toughness duplex stainless steel valve, comprising a valve body, both sides of the valve body are fixedly connected with an annular connecting block, the inner side of the annular connecting block is plugged with a butt pipe, the outer side of the butt pipe is fixedly connected with an abutment sheet, the outer side of the butt pipe is installed with a connecting component for sealing, and the outer side of the valve body is installed with a positioning component for connecting the butt pipe;

[0008] The positioning assembly includes four limit plates hingedly connected to the outside of the two abutment plates by hinges, four fixing cylinders respectively fixed to the outside of the two annular connecting blocks, a connecting hole opened at the top of the limit plate, a fitting cylinder fixed to the side of the limit plate away from the corresponding annular connecting block, a screw passed through the side of the fitting cylinder away from the corresponding annular connecting block, a clamping plate fixed to the side of the limit plate close to the valve body, an arc block fixed to the side of the clamping plate close to the corresponding annular connecting block, and four arc grooves respectively opened on the outside of the two annular connecting blocks.

[0009] Furthermore, the connecting assembly includes two plug-in blocks respectively fixed to the outside of the two docking tubes, two sealing blocks respectively fixed to the opposite sides of the two plug-in blocks, two plug-in grooves respectively opened on the opposite sides of the two annular connecting blocks, and a sealing sleeve bonded to the inner side of the annular connecting block.

[0010] Furthermore, each of the annular connecting blocks has two fixing tubes on the outside, and the two corresponding fixing tubes are symmetrically distributed up and down.

[0011] Furthermore, an internal thread groove for screw thread connection is provided on a side of the fixing tube away from the corresponding annular connecting block, and the connecting hole allows the corresponding fixing tube to pass through.

[0012] Furthermore, the interior of the fitting tube is connected with the interior of the corresponding connecting hole, and a round hole for the screw to pass through is provided on the side of the fitting tube away from the corresponding annular connecting block, and the inner side of the fitting tube away from the corresponding annular connecting block can abut against the outer side of the corresponding fixed tube.

[0013] Furthermore, the opposite sides of the left and right clamping plates can be respectively fitted with the opposite sides of the two annular connecting blocks, and the arc blocks can be inserted into the inner sides of the corresponding arc grooves, and the connection between the openings of the arc grooves and the annular connecting blocks is arc-shaped.

[0014] Furthermore, the outer side of the abutment sheet can abut against the outer side of the corresponding annular connecting block, the plug-in block and the sealing block can be simultaneously plugged into the inner side of the corresponding plug-in groove, and the outer side of the sealing block fits with the inner side of the plug-in groove, and the inner side of the sealing sleeve fits with the outer side of the docking tube.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a high-toughness duplex stainless steel valve, which has the following beneficial effects:

[0017] This high-toughness duplex stainless steel valve, through the coordinated use of the annular connecting block, the butt tube, the abutment plate, the connecting assembly and the positioning assembly on the outside of the valve body, can utilize the characteristics of duplex stainless steel to further improve the valve's toughness and corrosion resistance while also improving the stability of the seal, so that the overall structure can adapt to long-term use and can maintain a good sealing state during long-term use, facilitating the transportation of internal media. At the same time, the overall connection method is also very simple and convenient, allowing operators to quickly connect and disassemble, thereby greatly improving the practical performance of the high-toughness valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a partial enlarged schematic diagram of the A part in the structure of the utility model;

[0020] Figure 3 The utility model structure Figure 2 A partial enlarged schematic diagram of the middle B part;

[0021] Figure 4 It is a three-dimensional schematic diagram of the limit plate connection structure in the structure of the utility model.

[0022] In the figure: 1 valve body, 2 annular connecting block, 3 butt tube, 4 abutment sheet, 500 connecting assembly, 501 plug-in block, 502 sealing block, 503 plug-in groove, 504 sealing sleeve, 600 positioning assembly, 601 limit plate, 602 fixing cylinder, 603 connecting hole, 604 fitting cylinder, 605 screw, 606 clamping plate, 607 arc block, 608 arc groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4The utility model provides a technical solution: a high-toughness duplex stainless steel valve, comprising a valve body 1, annular connecting blocks 2 are fixedly connected to both sides of the valve body 1, a butt pipe 3 is inserted into the inner side of the annular connecting block 2, an abutting piece 4 is fixedly connected to the outer side of the butt pipe 3, a connecting component 500 for sealing is installed on the outer side of the butt pipe 3, and a positioning component 600 for connecting the butt pipe 3 is installed on the outer side of the valve body 1; through the coordinated use of the annular connecting block 2, the butt pipe 3, the abutting piece 4, the connecting component 500 and the positioning component 600 on the outer side of the valve body 1, the characteristics of duplex stainless steel can be used to further improve the toughness and corrosion resistance of the valve while improving the stability of the seal, so that the overall structure can adapt to long-term use, and can maintain a good sealing state during long-term use, which is convenient for the transportation of internal media, and at the same time, the overall connection method is also very simple and convenient, so that the operator can quickly connect and disassemble, thereby greatly improving the practical performance of the high-toughness valve.

[0025] It should be noted that the valve body 1 and the annular connecting block 2 are both made of high-toughness duplex stainless steel, which can greatly improve the toughness and corrosion resistance of the overall structure of the valve, allowing the valve to be used for a longer period of time.

[0026] In this embodiment, the positioning assembly 600 is a structure for facilitating connection and stabilizing positioning.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, the positioning assembly 600 includes four limit plates 601 which are hinged to the outside of the two abutment plates 4 through hinges, four fixed cylinders 602 which are respectively fixed to the outside of the two annular connecting blocks 2, a connecting hole 603 opened at the top of the limit plate 601, a fitting cylinder 604 fixed to the side of the limit plate 601 away from the corresponding annular connecting block 2, a screw 605 passed through the fitting cylinder 604 away from the side of the corresponding annular connecting block 2, a clamping plate 606 fixed to the side of the limit plate 601 close to the valve body 1, an arc block 607 fixed to the side of the clamping plate 606 close to the corresponding annular connecting block 2, and four arc grooves 608 which are respectively opened on the outside of the two annular connecting blocks 2.

[0028] It should be noted that each annular connecting block 2 has two fixed cylinders 602 on the outside, and the two corresponding fixed cylinders 602 are symmetrically distributed up and down. The fixed cylinder 602 is provided with an internal thread groove for threaded connection of the screw 605 on the side away from the corresponding annular connecting block 2, so that the screw 605 can be threadedly connected to the inner side of the fixed cylinder 602, and the connecting hole 603 can be passed through by the corresponding fixed cylinder 602, so that the limit plate 601 can move normally to the outside of the corresponding fixed cylinder 602.

[0029] In addition, the interior of the fitting tube 604 is connected with the interior of the corresponding connecting hole 603, and a round hole for the screw 605 to pass through is provided on the side of the fitting tube 604 away from the corresponding annular connecting block 2, and the inner side of the fitting tube 604 away from the corresponding annular connecting block 2 can be abutted against the outer side of the corresponding fixed tube 602, so that the screw 605 can be threadedly connected to the inner side of the corresponding internal thread groove through the round hole, and the fitting tube 604 can be squeezed by the end of the screw 605 so that it can be limited.

[0030] At the same time, the opposite sides of the left and right side clamping plates 606 can be respectively fitted with the opposite sides of the two annular connecting blocks 2, and the arc block 607 can be inserted into the inner side of the corresponding arc groove 608. The connection between the opening of the arc groove 608 and the annular connecting block 2 is arc-shaped, so that the arc block 607 can be inserted into the inner side of the corresponding arc groove 608 as the limiting plate 601 rotates, and can be moved out from the inner side of the corresponding arc groove 608. At the same time, the outer arc of the arc block 607 is a quarter of a circle, which is convenient for the arc block 607 to enter the inner side of the arc groove 608 to achieve a preliminary limiting effect.

[0031] In this embodiment, the connecting assembly 500 is a structure for connecting and sealing.

[0032] like Figure 1 As shown, the connection assembly 500 includes two plug-in blocks 501 respectively fixed to the outer sides of the two docking tubes 3, two sealing blocks 502 respectively fixed to the opposite sides of the two plug-in blocks 501, two plug-in grooves 503 respectively opened on the opposite sides of the two annular connection blocks 2, and a sealing sleeve 504 bonded to the inner side of the annular connection block 2.

[0033] It should be noted that the outer side of the abutment sheet 4 can abut against the outer side of the corresponding annular connecting block 2, the plug-in block 501 and the sealing block 502 can be simultaneously plugged into the inner side of the corresponding plug-in groove 503, and the outer side of the sealing block 502 fits with the inner side of the plug-in groove 503, and the inner side of the sealing sleeve 504 fits with the outer side of the docking tube 3, so that after the abutment sheet 4 abuts against the annular connecting block 2, the plug-in block 501 and the sealing block 502 can be plugged into the inner side of the corresponding plug-in groove 503 to achieve a sealing effect, and at the same time, the sealing sleeve 504 can also ensure the sealing performance of the outer side of the docking tube 3, thereby achieving a stable and good sealing function. The sealing block 502 and the sealing sleeve 504 are both rubber seals, which can achieve good sealing performance and are relatively low in cost.

[0034] The working principle of the above embodiment is:

[0035] When making a connection, the butt joint 3 is inserted into the inner side of the annular connecting block 2 so that the outer side of the butt joint 3 fits with the inner side of the sealing sleeve 504. The sealing sleeve 504 can seal the outer side of the butt joint 3, and the plug-in block 501 is plugged into the inner side of the plug-in groove 503 so that the sealing block 502 abuts against the inner wall of the plug-in groove 503 to achieve a second layer of sealing. The limiting plate 601 is rotated so that the clamping plate 606 moves to one side of the annular connecting block 2, and the clamping plate 606 is pushed so that the arc block 607 is plugged into the inner side of the arc groove 608 to achieve clamping limit. The screw 605 is rotated so that it is connected with the inner side thread of the fixed tube 602, and under the pressing action of the end of the screw 605, the inner wall of the fitting tube 604 abuts against the outer side of the corresponding fixed tube 602 to achieve connection and fixation. The connection work of the butt joint 3 can be completed, and the sealing performance of the connection can be guaranteed even when used for a long time.

[0036] Compared with the prior art, the high-toughness duplex stainless steel valve, through the coordinated use of the annular connecting block 2, the butt tube 3, the abutment plate 4, the connecting assembly 500 and the positioning assembly 600 on the outside of the valve body 1, can utilize the characteristics of duplex stainless steel to further improve the valve toughness and corrosion resistance while also improving the sealing stability, so that the overall structure can adapt to long-term use and can maintain a good sealing state during long-term use, which is convenient for the transportation of internal media. At the same time, the overall connection method is also very simple and convenient, allowing operators to quickly connect and disassemble, thereby greatly improving the practical performance of the high-toughness valve and solving the problem of poor sealing stability performance of the existing high-toughness valve body during long-term use.

[0037] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-toughness duplex stainless steel valve, comprising a valve body (1), characterized in that: Both sides of the valve body (1) are fixedly connected with an annular connection block (2), the inner side of the annular connection block (2) is plugged with a butt joint (3), the outer side of the butt joint (3) is fixedly connected with a contact plate (4), the outer side of the butt joint (3) is equipped with a connection assembly (500) for sealing, and the outer side of the valve body (1) is equipped with a positioning assembly (600) for connecting the butt joint (3); The positioning assembly (600) comprises four limit plates (601) each hingedly connected to the outer sides of the two abutment plates (4) through hinges, four fixing cylinders (602) respectively fixed to the outer sides of the two annular connecting blocks (2), a connecting hole (603) provided at the top of the limit plate (601), a fitting cylinder (604) fixed to the side of the limit plate (601) away from the corresponding annular connecting block (2), a screw (605) passed through the side of the fitting cylinder (604) away from the corresponding annular connecting block (2), a clamping plate (606) fixed to the side of the limit plate (601) close to the valve body (1), an arc block (607) fixed to the side of the clamping plate (606) close to the corresponding annular connecting block (2), and four arc grooves (608) respectively provided on the outer sides of the two annular connecting blocks (2).

2. A high toughness duplex stainless steel valve according to claim 1, characterized in that: The connection assembly (500) comprises two plug-in blocks (501) respectively fixed to the outside of two butt-jointing tubes (3), two sealing blocks (502) respectively fixed to opposite sides of the two plug-in blocks (501), two plug-in grooves (503) respectively opened on opposite sides of the two annular connection blocks (2), and a sealing sleeve (504) bonded to the inner side of the annular connection block (2).

3. The high-toughness duplex stainless steel valve according to claim 1, characterized in that: Each of the annular connecting blocks (2) has two fixing cylinders (602) on the outside, and the two corresponding fixing cylinders (602) are symmetrically distributed up and down.

4. A high toughness duplex stainless steel valve according to claim 1, characterized in that: An internal thread groove for threaded connection of a screw (605) is provided on a side of the fixing tube (602) away from the corresponding annular connection block (2), and the connection hole (603) allows the corresponding fixing tube (602) to pass through.

5. The high-toughness duplex stainless steel valve according to claim 1, characterized in that: The interior of the fitting tube (604) is connected to the interior of the corresponding connecting hole (603), and a circular hole for the screw (605) to pass through is provided on the side of the fitting tube (604) away from the corresponding annular connecting block (2). The inner side of the fitting tube (604) away from the corresponding annular connecting block (2) can abut against the outer side of the corresponding fixing tube (602).

6. The high toughness duplex stainless steel valve according to claim 1, characterized in that: The opposite sides of the clamping plates (606) on the left and right sides can be respectively fitted with the opposite sides of the two annular connecting blocks (2), and the arc block (607) can be inserted into the inner side of the corresponding arc groove (608), and the connection between the opening of the arc groove (608) and the annular connecting block (2) is arc-shaped.

7. The high-toughness duplex stainless steel valve according to claim 2, characterized in that: The outer side of the abutment sheet (4) can abut against the outer side of the corresponding annular connection block (2), the plug-in block (501) and the sealing block (502) can be simultaneously plugged into the inner side of the corresponding plug-in groove (503), and the outer side of the sealing block (502) fits with the inner side of the plug-in groove (503), and the inner side of the sealing sleeve (504) fits with the outer side of the butt tube (3).

Images