CN112475654B - Assembly welding process and assembly welding tool for all-welded gate valve - Google Patents
Assembly welding process and assembly welding tool for all-welded gate valve Download PDFInfo
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- CN112475654B CN112475654B CN202011338034.3A CN202011338034A CN112475654B CN 112475654 B CN112475654 B CN 112475654B CN 202011338034 A CN202011338034 A CN 202011338034A CN 112475654 B CN112475654 B CN 112475654B
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- end pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
Abstract
The invention discloses an assembly welding process and an assembly welding tool for an all-welded brake valve, wherein the assembly welding process for the all-welded brake valve comprises the following steps: s1: installing the valve body, the left end pipe and the right end pipe on the welding tool, and respectively welding the left end pipe and the right end pipe on the valve body; s2: placing the fixed plate into the valve body, inserting the flashboard between the left end pipe and the right end pipe after penetrating through the plate groove, and welding the outer edge part of the fixed plate on the valve body; s3: installing the support ring assembly in the left end pipe and the right end pipe through the assembling tool; s4: installing the valve stem into the gate, the gate being installed between the left and right end pipes; s5: and welding the support on the upper sealing cover, and welding the upper sealing cover on the upper end part of the valve body. The method has simple steps and convenient operation, and can improve the production efficiency of the all-welded gate valve and reduce the production cost.
Description
Technical Field
The invention relates to an assembly welding process and an assembly welding tool for an all-welded gate valve.
Background
At present, the all-welded gate valve is a valve which is widely used and comprises all parts which are connected by welding. However, the welding assembly process of the existing all-welded gate valve is complex and tedious in steps and inconvenient to operate, so that the production efficiency of the all-welded gate valve is limited, and the production cost is increased.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide the assembly welding process of the all-welded gate valve, which has the advantages of simple steps and convenient operation, and can improve the production efficiency of the all-welded gate valve and reduce the production cost.
In order to solve the technical problems, the technical scheme of the invention is as follows: an assembly welding process of an all-welded gate valve is implemented based on a welding tool and an assembly tool; wherein the content of the first and second substances,
the all-welded gate valve comprises a valve body, a left end pipe, a right end pipe, a fixing plate, a flashboard, a valve rod, an upper sealing cover, a lower sealing cover, a support, an end cover and a support ring assembly; the valve body is provided with a left mounting hole for mounting the left end pipe and a right mounting hole for mounting the right end pipe, the end part of the left end pipe extending into the valve body and the end part of the right end pipe extending into the valve body are respectively provided with the support ring assembly, the upper sealing cover is provided with a support seat hole suitable for being inserted into the support seat, and the fixed plate is internally provided with a plate groove which is matched with the flashboard and is suitable for penetrating through the flashboard;
the welding tool comprises a base, a valve body backer, a left backer and a right backer, wherein the valve body backer, the left backer and the right backer are all installed on the base;
the process comprises the following steps:
s1: placing the valve body on the welding tool and leaning against the valve body backer, installing the left end pipe in the left installation hole and leaning against the left backer, installing the right end pipe in the right installation hole and leaning against the right backer, and respectively welding the left end pipe and the right end pipe on the valve body;
s2: placing the fixed plate into the valve body, enabling the lower plate surface of the fixed plate to abut against the outer pipe walls of the left end pipe and the right end pipe, inserting the flashboard between the left end pipe and the right end pipe after penetrating through the plate groove, and then welding the outer edge part of the fixed plate on the valve body;
s3: taking out the flashboard, installing the support ring assembly on the assembly tool and installing the support ring assembly in the left end pipe and the right end pipe through the assembly tool;
s4: installing the valve stem into the gate, the gate being installed between the left and right end pipes;
s5: inserting the support into the support hole, welding the support on the upper sealing cover, welding the upper sealing cover on the upper end part of the valve body, sleeving the support on the valve rod, and welding the lower sealing cover on the lower end part of the valve body;
s6: and a sealing sleeve and a bearing are arranged between the valve rod and the support, and then the end cover is arranged on the support.
Further, in step S1, the specific steps of installing the left end pipe in the left installation hole are as follows:
placing the central shaft of the left end pipe along the vertical direction and placing the left end pipe into the inner hole of the valve body;
when the lower end part of the left end pipe extends into the left mounting hole, the lower end part of the left end pipe extends into the left mounting hole and rotates the left end pipe so that the central shaft of the left end pipe is horizontally placed.
Further, in step S1, the specific steps of mounting the right end pipe in the right mounting hole are as follows:
placing the central shaft of the right end pipe along the vertical direction and placing the right end pipe into the inner hole of the valve body;
when the lower end part of the right end pipe extends into the right mounting hole, the lower end part of the right end pipe extends into the right mounting hole and rotates the right end pipe so that the central shaft of the right end pipe is horizontally placed.
Furthermore, the end part of the left end pipe extending into the valve body and the end part of the right end pipe extending into the valve body are respectively provided with a mounting groove suitable for mounting the support ring assembly, and the inner peripheral wall of the support ring assembly is provided with a connecting groove extending along the circumferential direction of the inner peripheral wall;
the assembling tool comprises a supporting disc, at least two ring segments and at least one pull rod; wherein the content of the first and second substances,
the ring segments are sequentially connected end to form a connecting ring, a convex ring which is matched with the connecting groove and is suitable for being clamped into the connecting groove is arranged on the outer periphery of the connecting ring, and a part of the convex ring is arranged on the ring segments;
the supporting plate is provided with a supporting part and an end face abutting part;
the supporting part is matched with the inner peripheral wall of the connecting ring and is suitable for extending into the connecting ring to abut against the inner wall of the connecting ring when the convex ring is clamped into the connecting groove, so that the convex ring is kept clamped in the connecting groove;
the end face abutting part is used for abutting against one side end of the connecting ring;
at least one nut is connected to the support plate;
one end of the pull rod is provided with a thread matched with the nut and is suitable for being in threaded connection with the nut, and the pull rod is suitable for being pulled to drive the end face abutting part on the supporting disc to abut against the side end of the connecting ring so as to press the supporting ring assembly connected to the connecting ring into the mounting groove;
in step S3, the specific steps of installing the support ring assembly in the left end pipe and the right end pipe through the assembly tool are as follows:
m1: the convex ring on the ring segment is clamped into the connecting groove, and the ring segments are sequentially connected at the head to form a connecting ring;
m2: inserting a support on the support plate into the connecting ring to press the support against the inner circumferential wall of the connecting ring;
m3: assembling a support plate, a connecting ring and a support ring assembly to form an assembly, and placing the assembly between the left end pipe and the right end pipe;
m4: one end part of the pull rod penetrates through the left end pipe or the right end pipe and then is screwed on the nut, the pull rod is pulled to enable the end surface abutting part to abut against the side end of the connecting ring, and then the support ring assembly connected to the connecting ring is pressed into the mounting groove;
m5: and screwing the pull rod to separate the pull rod from the nut, taking the supporting part of the supporting disc out of the connecting ring, and taking the ring segment off the supporting ring assembly.
Further, the flashboard comprises a board body and a connecting nut, a flange part is arranged on the outer periphery of the connecting nut, at least one limiting plane part is arranged on the outer periphery of the flange part, and a T-shaped groove matched with the connecting nut and a rod hole for the valve rod to extend into are arranged in the board body;
in step S4, the specific steps of installing the valve stem into the shutter are:
the connecting nut is clamped into the T-shaped groove, and the limiting plane part is abutted against the groove wall of the T-shaped groove;
screwing the valve stem onto the coupling nut and extending the valve stem into the stem bore.
The invention also provides an assembly welding tool for the all-welded gate valve, which is applied to the assembly welding process of the all-welded gate valve and comprises a welding tool and an assembly tool; wherein the content of the first and second substances,
the welding tool comprises a base, a valve body backer, a left backer and a right backer; wherein the content of the first and second substances,
the valve body backer is arranged on the base and is suitable for abutting against the valve body so as to at least limit the position of the valve body in the front-back direction of the base;
the left backer is arranged on the base and is suitable for abutting against the left end pipe to limit the position of the left end pipe;
the right backrest is installed on the base and is suitable for abutting against the right end pipe to limit the position of the right end pipe;
the base is also provided with position marks used for limiting the position of the valve body in the left and right directions of the base.
Further provided is a specific structure of valve body backer, left backer and right backer, valve body backer, left backer and right backer include respectively:
the mounting bottom plate is connected to the base;
the lower end part of the limiting vertical plate is connected to the mounting bottom plate and is suitable for abutting against the valve body or the left end pipe or the right end pipe;
and the reinforcing rib plate is connected with the mounting bottom plate and the limiting vertical plate.
Furthermore, the end part of the left end pipe extending into the valve body and the end part of the right end pipe extending into the valve body are respectively provided with a mounting groove suitable for mounting the support ring assembly, and the inner peripheral wall of the support ring assembly is provided with a connecting groove extending along the circumferential direction of the inner peripheral wall;
the assembling tool comprises a supporting disc, at least two ring segments and at least one pull rod; wherein the content of the first and second substances,
the ring segments are sequentially connected end to form a connecting ring, a convex ring which is matched with the connecting groove and is suitable for being clamped into the connecting groove is arranged on the outer periphery of the connecting ring, and a part of the convex ring is arranged on the ring segments;
the supporting plate is provided with a supporting part and an end face abutting part;
the supporting part is matched with the inner peripheral wall of the connecting ring and is suitable for extending into the connecting ring to abut against the inner wall of the connecting ring when the convex ring is clamped into the connecting groove, so that the convex ring is kept clamped in the connecting groove;
the end face abutting part is used for abutting against one side end of the connecting ring;
the pull rod is suitable for being detachably connected to the supporting disc and is suitable for being pulled to drive the end face abutting part on the supporting disc to abut against the side end of the connecting ring, and then the supporting ring assembly connected to the connecting ring is pressed into the mounting groove.
Further, at least one nut is connected to the support plate;
one end of the pull rod is provided with a thread matched with the nut and is detachably connected with the nut on the supporting disk through the thread.
After the technical scheme is adopted, the valve body is arranged on the welding tool and leans against the valve body backer, the left end pipe is installed in the left mounting hole and leans against the left backer, the right end pipe is installed in the right mounting hole and leans against the right backer, and the left end pipe and the right end pipe are respectively welded on the valve body. And then, putting the fixed plate into the valve body, enabling the lower plate surface of the fixed plate to abut against the outer pipe walls of the left end pipe and the right end pipe, inserting the flashboard between the left end pipe and the right end pipe after penetrating through the plate groove, and welding the outer edge part of the fixed plate on the valve body. And then taking out the flashboard, installing the support ring assembly on the assembling tool and installing the support ring assembly in the left end pipe and the right end pipe through the assembling tool. The valve stem is then installed into the shutter, and the shutter is installed between the left and right end pipes. And then inserting the support into the support hole, welding the support on the upper sealing cover, welding the upper sealing cover on the upper end part of the valve body, sleeving the support on the valve rod, and welding the lower sealing cover on the lower end part of the valve body. Then a sealing sleeve and a bearing are arranged between the valve rod and the support, and the end cover is arranged on the support. The method has simple steps and convenient operation, shortens the time for welding and assembling the all-welded gate valve, further improves the production efficiency of the all-welded gate valve and reduces the production cost.
Drawings
FIG. 1 is a schematic structural view of an all-welded gate valve according to the present invention;
FIG. 2 is a schematic structural view of the valve body of the present invention;
FIG. 3 is a schematic illustration of the construction of the gate and valve stem of the present invention;
FIG. 4 is a top view of the coupling nut of the present invention;
FIG. 5 is a front view of the welding tool of the present invention;
FIG. 6 is a top view of the welding tooling of the present invention;
FIG. 7 is a schematic structural diagram of the assembly fixture of the present invention;
FIG. 8 is a schematic view of the attachment ring of the present invention;
FIG. 9 is a cross-sectional view of the attachment ring of the present invention;
fig. 10 is a schematic structural view of a support disk of the present invention.
Detailed Description
In order that the manner in which the present invention is attained and can be understood in detail, a more particular description of the invention briefly summarized above may be had by reference to the embodiments thereof which are illustrated in the appended drawings.
Example one
As shown in fig. 1 to 10, an assembly welding process for an all-welded gate valve is implemented based on a welding tool 100 and an assembly tool 200; wherein the content of the first and second substances,
the all-welded gate valve comprises a valve body 1, a left end pipe 2, a right end pipe 3, a fixing plate 4, a flashboard 5, a valve rod 6, an upper sealing cover 7, a lower sealing cover 8, a support 9, an end cover 10 and a support ring assembly 11; the valve body 1 is provided with a left mounting hole 12 for mounting the left end pipe 2 and a right mounting hole 13 for mounting the right end pipe 3, the end part of the left end pipe 2 extending into the valve body 1 and the end part of the right end pipe 3 extending into the valve body 1 are respectively provided with the support ring assembly 11, the upper sealing cover 7 is provided with a support seat hole suitable for being inserted into the support seat 9, and the fixed plate 4 is provided with a plate groove 14 which is adapted to the flashboard 5 and is suitable for penetrating through the flashboard 5;
the welding tool 100 comprises a base 15, a valve body backer 16, a left backer 17 and a right backer 18, wherein the valve body backer 16, the left backer 17 and the right backer 18 are all installed on the base 15;
the process comprises the following steps:
s1: placing the valve body 1 on the welding tool 100 and leaning against the valve body rest 16, installing the left end pipe 2 in the left installation hole 12 and leaning against the left rest 17, installing the right end pipe 3 in the right installation hole 13 and leaning against the right rest 18, and respectively welding the left end pipe 2 and the right end pipe 3 on the valve body 1;
s2: placing the fixing plate 4 into the valve body 1, enabling the lower plate surface of the fixing plate 4 to abut against the outer pipe walls of the left end pipe 2 and the right end pipe 3, inserting the flashboard 5 between the left end pipe 2 and the right end pipe 3 after penetrating through the board slot 14, and then welding the outer edge part of the fixing plate 4 on the valve body 1; in this embodiment, there are two fixing plates 4, and the left end tube 2 and the right end tube 3 are located between the two fixing plates 4; specifically, the plate groove 14 is a straight-line structure, and a welding angle of the fixing plate 4 can be defined by inserting the gate plate 5 between the left end pipe 2 and the right end pipe 3 after passing through the plate groove 14;
s3: taking out the gate plate 5, installing the support ring assembly 11 on the assembly tool 200, and installing the support ring assembly 11 in the left end pipe 2 and the right end pipe 3 through the assembly tool 200;
s4: installing the valve stem 6 into the shutter 5, installing the shutter 5 between the left and right end pipes 2 and 3;
s5: inserting the support 9 into the support hole, welding the support 9 on the upper sealing cover 7, welding the upper sealing cover 7 on the upper end part of the valve body 1, sleeving the support 9 on the valve rod 6, and welding the lower sealing cover 8 on the lower end part of the valve body 1;
s6: a sealing sleeve and a bearing are arranged between the valve rod 6 and the support 9, and then the end cover 10 is arranged on the support 9; in this embodiment, two support ring assemblies 11 are provided, each support ring assembly 11 includes a plurality of seal rings, each support ring assembly 11 can form a seal between the corresponding gate plate 5 and the corresponding left end pipe 2, and between the corresponding gate plate 5 and the corresponding right end pipe 3, a specific structure of each support ring assembly 11 is a prior art well known to those skilled in the art, and details are not described in this embodiment; more specifically, the inner diameter of the valve body 1 is 750 mm. After the method is adopted, the welding assembly of the all-welded gate valve is simpler and more convenient, the time for welding assembly is shortened, the production efficiency of the all-welded gate valve is further improved, and the production cost is reduced.
As shown in fig. 2 and 5, in step S1, the specific steps of installing the left end pipe 2 in the left installation hole 12 may be as follows:
placing the central shaft of the left end pipe 2 along the vertical direction and placing the left end pipe 2 into the inner hole of the valve body 1;
when the lower end part of the left end pipe 2 extends into the left mounting hole 12, extending the lower end part of the left end pipe 2 into the left mounting hole 12 and rotating the left end pipe 2 to enable the central shaft of the left end pipe 2 to be horizontally placed; specifically, when the central axis of the left end pipe 2 is placed horizontally, the size of the left end pipe 2 is larger than the inner diameter of the valve body 1, and therefore, when the central axis of the left end pipe 2 is placed horizontally, the left end pipe 2 cannot be directly placed into the valve body 1.
As shown in fig. 2 and 5, in step S1, the specific steps of installing the right-end pipe 3 in the right installation hole 13 may be as follows:
placing the central shaft of the right end pipe 3 along the vertical direction and placing the right end pipe 3 into the inner hole of the valve body 1;
when the lower end of the right end pipe 3 extends into the right mounting hole 13, the lower end of the right end pipe 3 extends into the right mounting hole 13 and the right end pipe 3 is rotated so that the central shaft of the right end pipe 3 is horizontally placed. Specifically, when the central axis of the right end pipe 3 is placed horizontally, the size of the right end pipe 3 is larger than the inner diameter of the valve body 1, and therefore, when the central axis of the right end pipe 3 is placed horizontally, the right end pipe 3 cannot be directly placed into the valve body 1.
As shown in fig. 1, 5, 7-10, the end of the left end pipe 2 extending into the valve body 1 and the end of the right end pipe 3 extending into the valve body 1 are respectively provided with a mounting groove 19 suitable for mounting the support ring assembly 11, and the inner peripheral wall of the support ring assembly 11 is provided with a connecting groove extending along the circumferential direction of the inner peripheral wall;
the assembly tool 200 comprises a supporting disc 20, at least two ring segments 21 and at least one pull rod; wherein the content of the first and second substances,
the ring segments 21 are sequentially connected end to form a connecting ring 22, a convex ring 23 which is matched with the connecting groove and is suitable for being clamped in the connecting groove is arranged on the outer periphery of the connecting ring 22, and a part of the convex ring 23 is arranged on the ring segments 21;
the support plate 20 has a support portion 24 and an end face abutment portion 25;
said support portion 24 being adapted to fit the inner peripheral wall of said coupling ring 22 and adapted to extend into said coupling ring 22 to abut against the inner wall of said coupling ring 22 when said collar 23 is snapped into said coupling groove, thereby keeping said collar 23 snapped into said coupling groove;
the end face abutting part 25 is used for abutting against one side end of the connecting ring 22;
at least one nut 26 is connected to the support plate 20;
one end of the pull rod is provided with a thread matched with the nut 26 and is suitable for being in threaded connection with the nut 26, and the pull rod is suitable for being pulled to drive the end face abutting part 25 on the supporting disc 20 to abut against the side end of the connecting ring 22 so as to press the supporting ring assembly 11 connected to the connecting ring 22 into the mounting groove 19;
in step S3, the specific steps of installing the support ring assembly 11 in the left end tube 2 and the right end tube 3 through the assembling tool 200 may be as follows:
m1: the convex ring 23 on the ring segment 21 is clamped into the connecting groove, and the ring segments 21 are sequentially connected at the head position to form a connecting ring 22;
m2: inserting the support 24 on the support plate 20 into the connection ring 22 so that the support 24 abuts against the inner circumferential wall of the connection ring 22;
m3: the assembly formed by assembling the support disc 20, the connecting ring 22 and the support ring component 11 is arranged between the left end pipe 2 and the right end pipe 3;
m4: one end part of the pull rod penetrates through the left end pipe 2 or the right end pipe 3 and then is screwed on the nut 26, the pull rod is pulled to enable the end surface abutting part 25 to abut against the side end of the connecting ring 22, and then the support ring assembly 11 connected to the connecting ring 22 is pressed into the mounting groove 19;
m5: screwing the pull rod to disengage the pull rod from the nut 26, removing the support portion 24 of the support plate 20 from the connection ring 22, and removing the ring segment 21 from the support ring assembly 11; in the present embodiment, the connection ring 22 is composed of 4 ring segments 21.
As shown in fig. 3 and 4, the shutter 5 includes a plate body 27 and a coupling nut 28, a flange portion 29 is provided on an outer peripheral portion of the coupling nut 28, at least one limiting plane portion 30 is provided on an outer peripheral portion of the flange portion 29, and a T-shaped groove adapted to the coupling nut 28 and a rod hole 31 into which the valve rod 6 extends are provided in the plate body 27;
in step S4, the specific steps of installing the valve stem 6 into the shutter 5 may be:
the connecting nut 28 is clamped into the T-shaped groove and the limiting plane part 30 is abutted against the groove wall of the T-shaped groove;
the valve stem 6 is screwed onto the coupling nut 28 and the valve stem 6 projects into the stem bore 31.
Example two
As shown in fig. 5 and 6, an assembly welding tool for an all-welded gate valve, which is applied to an assembly welding process of the all-welded gate valve according to the first embodiment, includes a welding tool 100 and an assembly tool 200; wherein the content of the first and second substances,
the all-welded gate valve comprises a valve body 1, a left end pipe 2 and a right end pipe 3, wherein a left mounting hole 12 for mounting the left end pipe 2 and a right mounting hole 13 for mounting the right end pipe 3 are formed in the valve body 1;
the welding tool 100 comprises a base 15, a valve body backer 16, a left backer 17 and a right backer 18; wherein the content of the first and second substances,
the valve body backer 16 is mounted on the base 15 and is adapted to abut against the valve body 1 to define at least a position of the valve body 1 in a front-rear direction of the base 15;
the left backer 17 is mounted on the base 15 and is adapted to abut against the left end tube 2 to define the position of the left end tube 2;
the right backer 18 is mounted on the base 15 and is adapted to abut against the right tube 3 to define the position of the right tube 3;
the base 15 is also provided with position marks for defining the position of the valve body 1 in the left-right direction of the base 15.
As shown in fig. 5 and 6, the valve body backer 16, the left backer 17, and the right backer 18 may respectively include:
a mounting base plate 32, wherein the mounting base plate 32 is connected to the base 15;
a limiting vertical plate 33, wherein the lower end part of the limiting vertical plate 33 is connected to the mounting bottom plate 32 and is suitable for abutting against the valve body 1 or the left end pipe 2 or the right end pipe 3;
at least one reinforcing rib 34, wherein the reinforcing rib 34 is connected with the mounting bottom plate 32 and the limit vertical plate 33.
As shown in fig. 5 to 10, the end portion of the left end tube 2 extending into the valve body 1 and the end portion of the right end tube 3 extending into the valve body 1 are respectively provided with a mounting groove 19 suitable for mounting the support ring assembly 11, and the inner circumferential wall of the support ring assembly 11 is provided with a connecting groove extending along the circumferential direction of the inner circumferential wall;
the assembly fixture 200 may include a support disc 20, at least two ring segments 21, and at least one tie rod; wherein the content of the first and second substances,
the ring segments 21 are sequentially connected end to form a connecting ring 22, a convex ring 23 which is matched with the connecting groove and is suitable for being clamped in the connecting groove is arranged on the outer periphery of the connecting ring 22, and a part of the convex ring 23 is arranged on the ring segments 21;
the support plate 20 has a support portion 24 and an end face abutment portion 25;
the support portion 24 is adapted to fit the inner peripheral wall of the connection ring 22 and adapted to extend into the connection ring 22 to abut against the inner wall of the connection ring 22 when the protruding ring 23 is snapped into the connection groove, thereby keeping the protruding ring 23 snapped into the connection groove;
the end face abutting part 25 is used for abutting against one side end of the connecting ring 22;
the pull rod is adapted to be detachably connected to the support plate 20 and is adapted to be pulled to bring the end surface abutting portion 25 of the support plate 20 against the side end of the connection ring 22, so as to press the support ring assembly 11 connected to the connection ring 22 into the mounting groove 19.
As shown in fig. 7 and 10, at least one nut 26 may be attached to the support plate 20;
one end of the pull rod is provided with a thread matched with the nut 26 and is detachably connected with the nut 26 on the support plate 20 through the thread.
The working principle of the invention is as follows:
the valve body 1 is arranged on the welding tool 100 and leans against the valve body backrest 16, the left end pipe 2 is arranged in the left mounting hole 12 and leans against the left backrest 17, the right end pipe 3 is arranged in the right mounting hole 13 and leans against the right backrest 18, and the left end pipe 2 and the right end pipe 3 are respectively welded on the valve body 1. Then, the fixing plate 4 is placed in the valve body 1, the lower plate surface of the fixing plate 4 abuts against the outer pipe walls of the left end pipe 2 and the right end pipe 3, the gate plate 5 is inserted between the left end pipe 2 and the right end pipe 3 after passing through the plate groove 14, and the outer edge of the fixing plate 4 is welded to the valve body 1. Then, the shutter 5 is taken out, the support ring assembly 11 is installed on the assembling tool 200, and the support ring assembly 11 is installed in the left end pipe 2 and the right end pipe 3 through the assembling tool 200. The valve stem 6 is then installed in the shutter 5, and the shutter 5 is installed between the left and right end pipes 2 and 3. And then inserting the support 9 into the support hole, welding the support 9 on the upper sealing cover 7, welding the upper sealing cover 7 on the upper end part of the valve body 1, sleeving the support 9 on the valve rod 6, and welding the lower sealing cover 8 on the lower end part of the valve body 1. Then a gland and a bearing are arranged between the valve rod 6 and the support 9, and the end cover 10 is arranged on the support 9. The method has simple steps and convenient operation, shortens the time for welding and assembling the all-welded gate valve, further improves the production efficiency of the all-welded gate valve and reduces the production cost.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (8)
1. The assembly welding process of the all-welded gate valve is characterized by being implemented based on a welding tool (100) and an assembly tool (200);
the all-welded gate valve comprises a valve body (1), a left end pipe (2), a right end pipe (3), a fixing plate (4), a flashboard (5), a valve rod (6), an upper sealing cover (7), a lower sealing cover (8), a support seat (9), an end cover (10) and a support ring assembly (11);
the valve body (1) is provided with a left mounting hole (12) for mounting the left end pipe (2) and a right mounting hole (13) for mounting the right end pipe (3), the end part of the left end pipe (2) extending into the valve body (1) and the end part of the right end pipe (3) extending into the valve body (1) are respectively provided with the support ring component (11), the upper sealing cover (7) is provided with a support seat hole suitable for being inserted into the support seat (9), and the fixed plate (4) is provided with a plate groove (14) which is matched with the flashboard (5) and is suitable for penetrating through the flashboard (5);
the welding tool (100) comprises a base (15), a valve body rest (16), a left rest (17) and a right rest (18), wherein the valve body rest (16), the left rest (17) and the right rest (18) are all arranged on the base (15);
the process comprises the following steps:
s1: placing the valve body (1) on the welding tool (100) and leaning against the valve body leaning against a mountain (16), installing the left end pipe (2) in the left installation hole (12) and leaning against the left leaning against a mountain (17), installing the right end pipe (3) in the right installation hole (13) and leaning against the right leaning against a mountain (18), and respectively welding the left end pipe (2) and the right end pipe (3) on the valve body (1);
s2: placing the fixing plate (4) into the valve body (1), enabling the lower plate surface of the fixing plate (4) to abut against the outer pipe walls of the left end pipe (2) and the right end pipe (3), inserting the flashboard (5) between the left end pipe (2) and the right end pipe (3) after penetrating through the plate groove (14), and welding the outer edge part of the fixing plate (4) on the valve body (1);
s3: taking out the flashboard (5), installing the support ring assembly (11) on the assembling tool (200) and installing the support ring assembly (11) in the left end pipe (2) and the right end pipe (3) through the assembling tool (200);
s4: -installing the valve stem (6) into the shutter (5), installing the shutter (5) between the left (2) and right (3) end pipes;
s5: inserting the support (9) into the support hole, welding the support (9) on the upper sealing cover (7), welding the upper sealing cover (7) on the upper end part of the valve body (1), sleeving the support (9) on the valve rod (6), and welding the lower sealing cover (8) on the lower end part of the valve body (1);
s6: a sealing sleeve and a bearing are arranged between the valve rod (6) and the support (9), and then the end cover (10) is arranged on the support (9);
the end part of the left end pipe (2) extending into the valve body (1) and the end part of the right end pipe (3) extending into the valve body (1) are respectively provided with a mounting groove (19) suitable for mounting the support ring component (11), and the inner peripheral wall of the support ring component (11) is provided with a connecting groove extending along the circumferential direction of the inner peripheral wall;
the assembling tool (200) comprises a supporting disc (20), at least two ring segments (21) and at least one pull rod;
the ring segments (21) are sequentially connected end to form a connecting ring (22), a convex ring (23) which is matched with the connecting groove and is suitable for being clamped in the connecting groove is arranged on the outer periphery of the connecting ring (22), and a part of the convex ring (23) is arranged on the ring segments (21);
the support plate (20) has a support portion (24) and an end face abutment portion (25);
the supporting part (24) is matched with the inner peripheral wall of the connecting ring (22) and is suitable for extending into the connecting ring (22) to abut against the inner wall of the connecting ring (22) when the convex ring (23) is clamped into the connecting groove, so that the convex ring (23) is kept clamped in the connecting groove;
the end face abutting part (25) is used for abutting against one side end of the connecting ring (22);
at least one nut (26) is connected to the support disc (20);
one end of the pull rod is provided with a thread matched with the nut (26) and is suitable for being in threaded connection with the nut (26), the pull rod is suitable for being pulled to drive the end face abutting part (25) on the supporting disc (20) to abut against the side end of the connecting ring (22), and then the supporting ring assembly (11) connected to the connecting ring (22) is pressed into the mounting groove (19);
in step S3, the specific steps of installing the support ring assembly (11) in the left end pipe (2) and the right end pipe (3) through the assembly tool (200) are as follows:
m1: clamping a convex ring (23) on the ring segment (21) into the connecting groove and sequentially connecting the ring segments (21) at the first position to form a connecting ring (22);
m2: inserting a support (24) on the support disc (20) into the connection ring (22) such that the support (24) abuts against an inner circumferential wall of the connection ring (22);
m3: assembling a support disc (20), a connecting ring (22) and a support ring assembly (11) into an assembly which is arranged between the left end pipe (2) and the right end pipe (3);
m4: one end part of the pull rod penetrates through the left end pipe (2) or the right end pipe (3) and then is screwed on the screw cap (26), the pull rod is pulled to enable the end face abutting part (25) to abut against the side end of the connecting ring (22), and then the support ring assembly (11) connected to the connecting ring (22) is pressed into the mounting groove (19);
m5: and screwing the pull rod to separate the pull rod from the nut (26), taking the supporting part (24) of the supporting disc (20) out of the connecting ring (22), and taking the ring segment (21) off the supporting ring assembly (11).
2. The assembly welding process of the all-welded brake valve according to claim 1, wherein the specific steps of installing the left end pipe (2) in the left installation hole (12) in step S1 are as follows:
placing the central shaft of the left end pipe (2) along the vertical direction and placing the left end pipe (2) into the inner hole of the valve body (1);
when the lower end part of the left end pipe (2) extends into the left mounting hole (12), the lower end part of the left end pipe (2) extends into the left mounting hole (12) and the left end pipe (2) is rotated so that the central shaft of the left end pipe (2) is horizontally placed.
3. The assembly welding process of the all-welded gate valve according to claim 1, wherein the specific steps of installing the right-end pipe (3) in the right installation hole (13) in step S1 are as follows:
placing the central shaft of the right end pipe (3) along the vertical direction and placing the right end pipe (3) into the inner hole of the valve body (1);
when the lower end of the right end pipe (3) extends into the right mounting hole (13), the lower end of the right end pipe (3) extends into the right mounting hole (13) and rotates the right end pipe (3) so that the central shaft of the right end pipe (3) is horizontally placed.
4. The assembly welding process of the all-welded gate valve according to claim 1, wherein the gate plate (5) comprises a plate body (27) and a connecting nut (28), a flange part (29) is arranged on the outer periphery of the connecting nut (28), at least one limiting plane part (30) is arranged on the outer periphery of the flange part (29), a T-shaped groove matched with the connecting nut (28) and a rod hole (31) for the valve rod (6) to extend into are arranged in the plate body (27);
in step S4, the specific steps of installing the valve stem (6) into the shutter (5) are:
the connecting nut (28) is clamped into the T-shaped groove, and the limiting plane part (30) is abutted against the groove wall of the T-shaped groove;
screwing the valve rod (6) onto the coupling nut (28) and extending the valve rod (6) into the rod bore (31).
5. An assembly welding tool for an all-welded gate valve is characterized by being applied to the assembly welding process of the all-welded gate valve according to any one of claims 1 to 4, and comprising a welding tool (100) and an assembly tool (200); wherein the content of the first and second substances,
the all-welded gate valve comprises a valve body (1), a left end pipe (2) and a right end pipe (3), wherein a left mounting hole (12) for mounting the left end pipe (2) and a right mounting hole (13) for mounting the right end pipe (3) are formed in the valve body (1);
the welding tool (100) comprises a base (15), a valve body rest (16), a left rest (17) and a right rest (18); wherein the content of the first and second substances,
the valve body rest (16) is mounted on the base (15) and is suitable for abutting against the valve body (1) so as to at least limit the position of the valve body (1) in the front-back direction of the base (15);
the left backrest (17) is mounted on the base (15) and is suitable for abutting against the left end pipe (2) to limit the position of the left end pipe (2);
the right backrest (18) is mounted on the base (15) and is suitable for abutting against the right end pipe (3) to limit the position of the right end pipe (3);
the base (15) is further provided with position marks for limiting the position of the valve body (1) in the left-right direction of the base (15).
6. The assembly welding tool for all-welded gate valves according to claim 5, wherein the valve body rest (16), the left rest (17) and the right rest (18) respectively comprise:
a mounting base plate (32), the mounting base plate (32) being connected to the base (15);
the lower end part of the vertical limiting plate (33) is connected to the mounting bottom plate (32) and is suitable for abutting against the valve body (1) or the left end pipe (2) or the right end pipe (3);
at least one reinforcing rib plate (34), wherein the reinforcing rib plate (34) is connected with the installation bottom plate (32) and the limiting vertical plate (33).
7. The assembly welding tool for the all-welded gate valve according to claim 5, wherein the end portion of the left end pipe (2) extending into the valve body (1) and the end portion of the right end pipe (3) extending into the valve body (1) are respectively provided with a mounting groove (19) suitable for mounting the support ring assembly (11), and the inner peripheral wall of the support ring assembly (11) is provided with a connecting groove extending along the circumferential direction of the inner peripheral wall;
the assembling tool (200) comprises a supporting disc (20), at least two ring segments (21) and at least one pull rod; wherein the content of the first and second substances,
the ring segments (21) are sequentially connected end to form a connecting ring (22), a convex ring (23) which is matched with the connecting groove and is suitable for being clamped in the connecting groove is arranged on the outer periphery of the connecting ring (22), and a part of the convex ring (23) is arranged on the ring segments (21);
the support plate (20) has a support portion (24) and an end face abutment portion (25);
the supporting part (24) is matched with the inner peripheral wall of the connecting ring (22) and is suitable for extending into the connecting ring (22) to abut against the inner wall of the connecting ring (22) when the convex ring (23) is clamped into the connecting groove, so that the convex ring (23) is kept clamped in the connecting groove;
the end face abutting part (25) is used for abutting against one side end of the connecting ring (22);
the pull rod is suitable for being detachably connected to the support disc (20) and is suitable for being pulled to drive the end face abutting part (25) on the support disc (20) to abut against the side end of the connecting ring (22), and then the support ring assembly (11) connected to the connecting ring (22) is pressed into the mounting groove (19).
8. The assembly welding tool for all-welded gate valves according to claim 7,
at least one nut (26) is connected to the support disc (20);
one end of the pull rod is provided with a thread matched with the nut (26) and detachably connected with the nut (26) on the support plate (20) through the thread.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011338034.3A CN112475654B (en) | 2020-11-25 | 2020-11-25 | Assembly welding process and assembly welding tool for all-welded gate valve |
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| CN202011338034.3A CN112475654B (en) | 2020-11-25 | 2020-11-25 | Assembly welding process and assembly welding tool for all-welded gate valve |
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| CN112475654B true CN112475654B (en) | 2022-05-20 |
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| CN110285227A (en) * | 2019-06-20 | 2019-09-27 | 苏州纽威阀门股份有限公司 | The assembly method of valve seat and valve body, the assembly method of smaller diameter valve and valve |
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| US4972577A (en) * | 1988-12-12 | 1990-11-27 | Dierikx Andreas P A | Method for manufacturing gate valves |
| US5085403A (en) * | 1988-12-12 | 1992-02-04 | R.M.I. Holland B.V. | Gate valves |
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