A valve body fixing device for valve processing

Abstract

The present invention discloses a valve body fixing device for valve processing, comprising a fixing plate, wherein an arc-shaped slide groove is provided at the upper end of the fixing plate, wherein at least two groups of rotatably adjustable clamping arms are provided at the upper end of the fixing plate, wherein the clamping arms are used to clamp the valve, and wherein the clamping arms comprise: a fastening portion, which is slidably clamped in the slide groove and is used to adjust the position; a telescopic portion, which is telescopically arranged at the end of the fastening portion; and a clamping portion, which is arranged at the end of the telescopic portion. The present invention can clamp and position valves of different sizes, and also avoids damage to the outer side of the valve, thereby maintaining the integrity of the valve. For small-caliber valves or scenes requiring precise control of the clamping force, the support on the inner side of the valve is more suitable, providing stable support from the inside, reducing vibration and displacement during processing or testing, and avoiding damage or influence on the outer surface of the valve, thereby avoiding affecting the sealing performance of the valve.

Description

Technical Field

[0001] The invention relates to the technical field of valve processing, in particular to a valve body fixing device for valve processing. Background Art

[0002] The main body of the valve is mainly made by casting during the manufacturing process. Metal materials suitable for casting, such as gray cast iron, ductile iron, cast steel, etc., are selected and smelted to ensure the purity and smelting temperature of the metal materials. The liquid metal is poured from the furnace into the pre-prepared mold, where it cools and solidifies to form a solid valve casting. In valve casting, it is also necessary to remove impurities such as sand and oxides on the surface of the valve to make the surface of the casting smooth.

[0003] Among them, the most commonly used method to remove impurities such as sand and oxides on the surface of the valve is mechanical removal. The sand is loosened and falls off by knocking, and the valve surface is brushed with tools such as wire brushes, copper wire brushes or special valve cleaning brushes. In the process of cleaning the valve, it needs to be fixed, and there are relatively many types of valves with various shapes. In terms of fixing, it is necessary to use a special clamp or fix the flange connection end of the valve. The flange connection end is used to connect with the pipeline, and during the connection process, it needs to maintain a sealed state. When fixing with the flange connection end, it may cause the flange to deform or leak, thereby affecting the sealing effect and causing the valve to leak or be damaged. Therefore, when fixing the valve, special attention should be paid to not damage the flange connection end of the valve, and the valve needs to be fixed and tightened to facilitate subsequent treatment of the valve surface. Summary of the invention

[0004] The object of the present invention is to provide a valve body fixing device for valve processing to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a valve body fixing device for valve processing, comprising a fixing plate, an arc-shaped slide groove is provided on the upper end of the fixing plate, at least two groups of rotatable and adjustable clamping arms are provided on the upper end of the fixing plate, the clamping arms are used to clamp the valve, and the clamping arms include:

[0006] A fastening part, slidably clamped in the slide slot, for adjusting the position;

[0007] A telescopic portion, telescopically disposed at an end of the fastening portion;

[0008] The clamping portion is arranged at the end of the telescopic portion and is used to extend into the flange connection end of the valve and to be pressed against the inner wall of the flange connection end of the valve.

[0009] Further, the fastening part includes an I-shaped block clamped in the slide groove, a threaded tube 1 is fixed to the upper end of the I-shaped block, a fastening bolt 1 is connected to the inner thread of the threaded tube 1, the fastening bolt 1 penetrates downward through a layer of the I-shaped block, and the lower end of the fastening bolt 1 is rotatably connected to a support plate, and the support plate is supported on the upper end of the fixed plate;

[0010] The upper end of the I-shaped block is also integrally provided with a bent arm body, and the arm body is sleeved with the telescopic part.

[0011] Furthermore, the central axis of the slide groove coincides with the central axis of the fixed plate, and the two sides of the I-shaped block fit with the inner walls of the two sides of the slide groove.

[0012] Furthermore, the telescopic part includes a sleeve 1 and a sleeve 2 which are rotatably connected. The sleeve 1 and the sleeve 2 are both sleeved on the outside of the arm body. A threaded tube 2 is fixed on the outer wall of the sleeve 1 and the sleeve 2. The inner thread of the threaded tube 2 is connected to a fastening bolt 2, and the fastening bolt 2 is used to resist the arm body.

[0013] Furthermore, an operation port is provided on the outer side of the sleeve 1, and a half-circle matching port is provided on the inner wall of the sleeve 1, and the matching port is connected with the operation port;

[0014] The clamping part includes a threaded sleeve fixed in a matching port, the threaded sleeve has an internal screw connected to the internal thread, the threaded sleeve and the internal screw both coincide with the axis of the sleeve one, the outer end of the sleeve one is further provided with a shaft body one and a shaft body two, the shaft body one and the shaft body two are integrally arranged with end to end connection, the outer side of the shaft body one is fixed to the end of the sleeve one, the shaft body one and the shaft body two are both provided with side ports, the side ports are provided with a clamping rod that can be opened and changed outward, the clamping rod is used to clamp on the inner side of the flange connection end of the valve, and the internal screw is used to adjust the opening degree of the clamping rod.

[0015] Furthermore, the side opening divides the shaft body 2 into a plurality of petals, a cross bar is fixed between the plurality of petals of the shaft body 2, the interior of the clamping rod is hollowed out, the cross bar is inserted into the hollowed out portion of the clamping rod, and the two sides of the clamping rod are in contact with the petal-shaped shaft body 2 on both sides respectively;

[0016] The end of the inner screw rod extends into the shaft body 1, and a connecting end is fixed on the outer side of the inner screw rod, and the connecting end is hinged to the oblique inner end of the clamping rod.

[0017] Furthermore, the diameter of the inner screw is the same as the diameter of the shaft body 1 and the shaft body 2, and the screw head of the inner screw is used to fit with the inner wall of the sleeve 1.

[0018] Furthermore, the clamping rod is made of metal, and a rubber layer is adhered to the oblique outer end of the clamping rod.

[0019] Furthermore, the fixing plate is provided with a plurality of mounting holes, the fixing plate is provided with a support block, the support block is mounted on the fixing plate through the mounting holes, and the support block is used to support the valve.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] 1. The oblique outer end of the clamping rod is clamped on the inner side of the valve flange connection end to achieve clamping and positioning of valves of different sizes, avoid damage to the outer side of the valve, and maintain the integrity of the valve. For small-diameter valves or scenes that require precise control of the clamping force, it is more suitable to support it on the inside of the valve, provide stable support from the inside, reduce vibration and deviation during processing or testing, avoid damage or impact on the outer surface of the valve, and avoid affecting the sealing performance of the valve.

[0022] 2. The diameter of the inner screw is the same as the inner diameter of shaft body 1 and shaft body 2. The screw head of the inner screw is used to rotate and fits the inner wall of sleeve 1. The inner screw will make the clamping rod more stable during support to avoid looseness.

[0023] 3. The I-block is slidably adjusted in the slide groove, and then the fastening bolts of the fastening part are tightened. The clamping part can extend to the flange connection end of the valve, which is convenient for positioning different valves, especially customized special-shaped valves.

[0024] 4. The clamping part clamps the valve to realize the extension and rotation of sleeve 1 and sleeve 2 on the arm body, so that the clamping part is clamped at the appropriate position of the valve, and the valve surface is cleaned or polished. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the clamping arm of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the clamping part of the present invention;

[0029] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a clamping portion of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the clamping rod of the clamping part expanding outwards of the present invention;

[0031] Figure 6It is a schematic diagram of the relative structure of two groups of clamping parts of the present invention;

[0032] Figure 7 It is a schematic diagram of the support block structure of the present invention.

[0033] In the figure: 1, fixed plate; 11, slide groove; 12, mounting hole; 13, support block; 2, clamping arm; 21, fastening part; 211, I-shaped block; 212, threaded pipe one; 213, fastening bolt one; 214, support plate; 215, arm body; 22, telescopic part; 221, sleeve one; 222, operating port; 223, sleeve two; 224, threaded pipe two; 225, fastening bolt two; 226, matching port; 23, clamping part; 231, shaft body one; 232, shaft body two; 233, side port; 234, clamping rod; 235, threaded sleeve; 236, inner screw; 237, connecting end; 238, cross bar. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figure 1-Figure 7 The present invention provides a technical solution: A valve body fixing device for valve processing, comprising a fixing plate 1, an arc-shaped slide groove 11 is provided at the upper end of the fixing plate 1, at least two groups of rotatable and adjustable clamping arms 2 are provided at the upper end of the fixing plate 1, the clamping arms 2 are used to clamp the valve, and the clamping arms 2 include a fastening portion 21, a telescopic portion 22 and a clamping portion 23;

[0036] The fastening portion 21 is slidably clamped in the slide slot 11 for adjusting the position;

[0037] The telescopic portion 22 is telescopically arranged at the end of the fastening portion 21;

[0038] The clamping portion 23 is disposed at the end of the telescopic portion 22 and is used to extend into the flange connection end of the valve and to be pressed against the inner wall of the flange connection end of the valve. Figure 6 As shown, the two clamping parts 23 are arranged opposite to each other and are used to clamp the valve.

[0039] The fastening part 21 includes an I-shaped block 211 clamped in the slide groove 11, a threaded tube 212 is fixed on the upper end of the I-shaped block 211, a fastening bolt 213 is connected to the inner thread of the threaded tube 212, the fastening bolt 213 penetrates downward through a layer of the I-shaped block 211, and the lower end of the fastening bolt 213 is rotatably connected to a support plate 214, and the support plate 214 is supported on the upper end of the fixed plate 1. The I-shaped block 211 in the slide groove 11 can adjust the position in the slide groove 11, and the adjustment position of the I-shaped block 211 is the position facing the valve flange connection end, so that different valves can be clamped. In addition, by rotating the fastening bolt 213, the support plate 214 at the lower end can be squeezed downward to fix the I-shaped block 211;

[0040] like Figure 2 As shown, the upper end of the I-shaped block 211 is also integrally provided with a bent arm body 215, the arm body 215 is sleeved with the telescopic portion 22, the arm body 215 extends laterally and the telescopic portion 22 can be located on the arm body 215 for telescopic adjustment, and the position between the clamping arms 2 on both sides can be adjusted to achieve clamping of valves of different sizes.

[0041] The central axis of the slide groove 11 coincides with the central axis of the fixed plate 1 , and the two sides of the I-shaped block 211 fit with the inner walls of the two sides of the slide groove 11 . It should be noted that after the I-shaped block 211 slides, the arm body 215 still points to the axis of the fixed plate 1 .

[0042] like Figure 2 As shown, the telescopic portion 22 includes a sleeve 1 221 and a sleeve 223 which are rotatably connected. The sleeve 1 221 and the sleeve 223 are both sleeved on the outside of the arm body 215. A threaded tube 224 is fixed to the outer wall of the sleeve 1 221 and the sleeve 223. A fastening bolt 225 is connected to the inner thread of the threaded tube 224. The fastening bolt 225 is used to abut against the arm body 215. Since the fastening bolt 225 for fastening is provided on the outer side of the sleeve 1 221 and the sleeve 2 223, the sleeve 1 221 and the sleeve 2 223 can be adjusted separately, so that the sleeve 1 221 and the sleeve 2 223 can both rotate and telescope, or the sleeve 1 221 rotates.

[0043] like Figure 3 and Figure 4 As shown, an operating port 222 is provided on the outer side of the sleeve 221, and a half-circle matching port 226 is provided on the inner wall of the sleeve 221, and the matching port 226 is connected with the operating port 222. It should be noted that the operating port 222 is for facilitating the adjustment of the inner screw 236 to reduce the blocking effect;

[0044] The clamping portion 23 includes a threaded sleeve 235 fixed in the matching port 226, and the threaded sleeve 235 is internally threadedly connected with an internal screw 236. The threaded sleeve 235 and the internal screw 236 are both coincident with the axis of the sleeve 221. It should be noted that the internal screw 236 is easy to adjust and the internal screw 236 is prevented from deviating. The outer end of the sleeve 221 is also provided with a shaft body 231 and a shaft body 232. The shaft body 231 and the shaft body 232 are integrally connected end to end. The outer side of the shaft body 231 is fixed to the end of the sleeve 221. The shaft body 231 and the shaft body 232 are integrally connected end to end. The body 232 is provided with a side opening 233, and the side opening 233 is provided with a clamping rod 234 that can open outward. The clamping rod 234 is used to clamp the inner side of the flange connection end of the valve, and the inner screw 236 is used to adjust the opening degree of the clamping rod 234. It should be noted that under the action of the side opening 233, the clamping rod 234 can expand, and the clamping rod 234 can resist the inner side of the flange connection end of the valve after it is opened. After resisting, the outer side of the valve can be cleaned, and the flange connection end of the valve can also be polished to keep the flange connection end smooth and maintain a sealed state.

[0045] The side opening 233 divides the shaft body 232 into a plurality of petals, and a cross bar 238 is fixed between the plurality of petal shaft bodies 232. The interior of the clamping rod 234 is hollowed out, and the cross bar 238 is inserted into the hollowed-out part of the clamping rod 234. The two sides of the clamping rod 234 are respectively in contact with the petal-shaped shaft bodies 232 on both sides. It should be noted that the position of the clamping rod 234 can be changed, but it will not be offset like the two sides. The two sides are limited by the petal-shaped shaft bodies 232 to increase stability.

[0046] The end of the inner screw 236 extends into the shaft body 231, and a connecting end 237 is fixed to the outer side of the inner screw 236. The connecting end 237 is hinged to the oblique inner end of the clamping rod 234, so that the clamping rod 234 is supported outward during the movement of the inner screw 236.

[0047] The diameter of the inner screw 236 is the same as the diameter of the shaft body 1 231 and the shaft body 232. The screw head of the inner screw 236 used for rotation fits with the inner wall of the sleeve 1 221. It should be noted that the screw head of the inner screw 236 used for rotation is a hexagonal hole, and a hexagonal bolt is used for twisting to achieve the rotation of the inner screw 236.

[0048] The clamping rod 234 is made of metal, and a rubber layer is adhered to its oblique outer end. The function of the rubber layer is to avoid hard contact between the two and make soft contact between the two. At the same time, the rubber material has excellent elasticity and can better adapt to the shape and size changes on the inside of the valve flange, thereby improving the stability and reliability of clamping. At the same time, the rubber layer can fill the gap between the workpiece and the clamping end, improve the accuracy and efficiency of the support, and reduce the friction and wear between the clamping end and the valve during the extrusion process of the clamping rod 234.

[0049] The fixed disk 1 is also provided with a plurality of mounting holes 12, and a support block 13 is provided on the fixed disk 1. The support block 13 is installed on the fixed disk 1 through the mounting holes 12. The support block 13 is used to support the valve. When the valve has only one flange connection end on the horizontal plane, one side of the valve can be supported on the support block 13, and the other end can cooperate with a clamping arm 2.

[0050] The working principle of the present invention is as follows: the valve is placed on the fixed plate 1, and the tightness of the fastening bolt 213 can be adjusted according to the fastening portion 21, so that the I-block 211 is slidably adjusted in the slide groove 11, so that the clamping portion 23 faces the flange connection end of the valve, and then the fastening bolt 213 of the fastening portion 21 is tightened. In the case of different valves, the clamping portion 23 can be kept extending into the flange connection end of the valve, which is convenient for positioning different valves, especially customized special-shaped valves.

[0051] In addition, the adjusting arm body 215 is sleeved with the sleeve one 221 and the sleeve two 223, and the sleeve one 221 and the sleeve two 223 are each provided with a respective fastening bolt two 225. The fastening bolts two 225 on both are tightened to keep the position of the sleeve one 221 stationary. The fastening bolts two 225 on both are loosened, so that the sleeve one 221 and the sleeve two 223 can slide along the arm body 215 to adjust the position of the clamping part 23. In addition, the fastening bolt two 225 on the sleeve two 223 is in a tightened state. The fastening bolt two 225 on the sleeve one 221 is loosened, so that the position of the sleeve one 221 and the clamping part 23 remains unchanged, but can be rotated and adjusted. In the process of the clamping part 23 clamping the valve, the sleeve 1 221 and the sleeve 223 are located on the arm body 215 to extend and rotate, so that the clamping part 23 is clamped at a suitable position of the valve and adjusted according to valves of different sizes. In addition, when cleaning or polishing the surface of the valve, the fastening bolt 225 on the sleeve 1 221 is loosened to allow the sleeve 1 221 to rotate, thereby realizing the rotation of the valve and facilitating the cleaning of the valve.

[0052] The inner screw 236 is rotated to control the inner screw 236 to extend and retract, so that the clamping rod 234 at its outer end can extend along the side opening 233 between the two-piece shaft body 232, and the clamping rod 234 is controlled to expand, so that the oblique outer end of the clamping rod 234 is clamped on the inner side of the valve flange connection end, so as to achieve clamping and positioning of valves of different sizes, and avoid damage to the outer side of the valve, so as to maintain the integrity of the valve. For small-diameter valves or scenes where the clamping force needs to be precisely controlled, the clamping rod 234 supported on the inner side of the valve is more suitable, providing stable support from the inside, reducing vibration and deviation during processing or testing, and avoiding damage or influence on the outer surface of the valve, so as to avoid affecting the sealing performance of the valve;

[0053] In addition, the diameter of the inner screw 236 is the same as the inner diameter of the shaft body 1 231 and the shaft body 232, and the screw head of the inner screw 236 used for rotation fits against the inner wall of the sleeve 1 221, so that the inner screw 236 is limited near both ends, making the inner screw 236 more stable in the process of supporting the clamping rod 234. At the same time, there is a self-locking effect between the inner screw 236 and the threaded sleeve 235, which prevents loosening after the valve is clamped.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve body fixing device for valve processing, It is characterized in that The invention comprises a fixed plate (1), wherein an arc-shaped slide groove (11) is provided at the upper end of the fixed plate (1), and at least two groups of rotatably adjustable clamping arms (2) are provided at the upper end of the fixed plate (1), wherein the clamping arms (2) are used to clamp the valve body, and the clamping arms (2) comprise: A fastening portion (21) is slidably clamped in the slide groove (11) and is used for adjusting the position; A telescopic portion (22) telescopically arranged at an end of the fastening portion (21); A clamping portion (23) is arranged at the end of the telescopic portion (22) and is used to extend into the flange connection end of the valve and to be pressed against the inner wall of the flange connection end of the valve; The fastening portion (21) comprises an I-shaped block (211) clamped in the slide groove (11); a threaded tube (212) is fixed to the upper end of the I-shaped block (211); a fastening bolt (213) is connected to the inner thread of the threaded tube (212); the fastening bolt (213) penetrates downward through a layer of the I-shaped block (211); the lower end of the fastening bolt (213) is rotatably connected to a support plate (214); the support plate (214) is supported on the upper end of the fixed plate (1); The upper end of the I-shaped block (211) is also integrally provided with a bent arm (215), and the arm (215) is sleeved with the telescopic portion (22); The central axis of the slide groove (11) coincides with the central axis of the fixed plate (1), and two sides of the I-shaped block (211) are in contact with the inner walls of the slide groove (11); The telescopic portion (22) comprises a first sleeve (221) and a second sleeve (223) which are rotatably connected, the first sleeve (221) and the second sleeve (223) are both sleeved on the outside of the arm body (215), the outer walls of the first sleeve (221) and the second sleeve (223) are both fixed with a second threaded tube (224), the second threaded tube (224) is internally threadedly connected with a second fastening bolt (225), and the second fastening bolt (225) is used to abut against the arm body (215); An operating port (222) is provided on the outer side of the sleeve one (221), and a half-circle matching port (226) is provided on the inner wall of the sleeve one (221), wherein the matching port (226) is in communication with the operating port (222); The clamping portion (23) comprises a threaded sleeve (235) fixed in the matching opening (226); the threaded sleeve (235) is internally threadedly connected to an internal screw rod (236); the threaded sleeve (235) and the internal screw rod (236) both coincide with the axis of the first sleeve (221); the outer end of the first sleeve (221) is further provided with a shaft body (231) and a shaft body (232); the shaft body (231) and the shaft body (232) are in the form of a An integral arrangement connected end to end, the outer side of the shaft body (231) being fixed to the end of the sleeve (221), the shaft body (231) and the shaft body (232) both being provided with side openings (233), the side openings (233) being provided with a clamping rod (234) that can be opened outwards, the clamping rod (234) being used to clamp on the inner side of the flange connection end of the valve, and the inner screw (236) being used to adjust the opening degree of the clamping rod (234); The side opening (233) divides the shaft body (232) into a plurality of petals, a cross bar (238) is fixed between the plurality of petals of the shaft body (232), the interior of the clamping rod (234) is hollowed out, the cross bar (238) is inserted into the hollowed out portion of the clamping rod (234), and the two sides of the clamping rod (234) are respectively in contact with the petal-shaped shaft body (232) on both sides; The end of the inner screw rod (236) extends into the shaft body (231), and a connecting end (237) is fixed to the outside of the inner screw rod (236), and the connecting end (237) is hinged to the oblique inner end of the clamping rod (234); The diameter of the inner screw (236) is the same as the inner diameter of the shaft body 1 (231) and the shaft body 2 (232), and the screw head of the inner screw (236) is used for rotation and fits with the inner wall of the sleeve 1 (221).

2. The valve body fixing device for valve processing according to claim 1, Features: The clamping rod (234) is made of metal, and a rubber layer is adhered to the oblique outer end thereof.

3. The valve body fixing device for valve processing according to claim 1, Features: The fixing plate (1) is also provided with a plurality of mounting holes (12). The fixing plate (1) is provided with a support block (13). The support block (13) is mounted on the fixing plate (1) through the mounting holes (12). The support block (13) is used to support the valve.

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