CN112045373B - Manufacturing process of environment-friendly butterfly valve body and product thereof - Google Patents
Manufacturing process of environment-friendly butterfly valve body and product thereof Download PDFInfo
- Publication number
- CN112045373B CN112045373B CN202010985723.7A CN202010985723A CN112045373B CN 112045373 B CN112045373 B CN 112045373B CN 202010985723 A CN202010985723 A CN 202010985723A CN 112045373 B CN112045373 B CN 112045373B
- Authority
- CN
- China
- Prior art keywords
- valve
- semi
- finished
- connector
- neck
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to a manufacturing process of an environment-friendly butterfly valve body, which comprises the steps of respectively preparing a valve seat and a connector, and manufacturing the valve body by adopting the processes of cold stamping and deep drawing, finish machining, saw cutting, laser welding and the like.
Description
Technical Field
The invention relates to the field of valves, in particular to a manufacturing process of an environment-friendly butterfly valve body and a butterfly valve body manufactured by the process.
Background
Butterfly valveFlap valveIs a simple structureRegulating valveA butterfly valve for controlling the opening and closing of a medium in a low-pressure line is characterized in that the closing element (flap or butterfly plate) is a disk which rotates about a valve axis to open and closeClose offThe valve can be used for controlling air, water and,Steam generating deviceVarious corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing member is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or the adjustment are realized
The butterfly valve includes inside hollow valve body, the vertical valve shaft that runs through the valve body and the valve plate of cover outside the valve shaft, and the valve plate realizes opening and shutting the action with the valve body under the drive of valve shaft, and wherein the most leading valve body mainly makes through the casting, but this kind of cast valve body still has following defect:
1. the valve body manufactured by casting has lower low-temperature resistance, and is easy to show frost crack of the valve body when used in special fluids, so that the valve is damaged, and great potential safety hazard is brought.
2. The valve body made by casting has low strength, and is easy to air-dry naturally after being used for a period of time, so that the service life is too low.
3. The production process of the cast valve body can generate solid waste and dangerous air pollutants which seriously pollute the environment, the air pollution source is dispersed during casting, the concentration is lower, the quantity is large, more than 40 types of casting waste gas are detected in 188 total air pollutants listed by the United states environmental protection agency, the environment and the human health are greatly harmed, the health of workers is seriously influenced, and the environment-friendly policy which is continuously pushed by China is not met.
4. The valve body is cast by hot processing, a large amount of heat energy is consumed, long-time cooling is needed after casting, in the casting process, oxide skin is easy to appear on the surface of the valve body, and the oxide skin on the surface is removed by adopting the modes of shot blasting, sand blasting, acid pickling and the like, but the method for removing the oxide skin has obvious defects, if the shot blasting and the sand blasting are high in energy consumption, energy is not saved, the cost is high, the acid pickling process easily causes serious pollution to the environment, if the environment-friendly project is adopted, the cost of a manufacturing enterprise is very high, the production cost and the time cost of the valve are greatly increased, and the production efficiency is too low.
Disclosure of Invention
The technical problem to be solved by the present invention is to solve the above-mentioned deficiencies of the prior art,
the butterfly valve body manufactured by the process has high strength, solves the problems of low-temperature easy frost crack and normal-temperature easy air drying of the cast valve body, prolongs the service life, and greatly increases enterprise competitiveness compared with the original process with low cost and high efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: the manufacturing process of the environment-friendly butterfly valve body comprises the following steps:
s1, preparing a semi-finished valve seat, and manufacturing a steel plate into the semi-finished valve seat with a valve clack, an extension part, an upper valve neck and a lower valve neck through a cold stamping and deep drawing process according to the size of the valve body;
preparing a semi-finished product connector, cutting the whole steel pipe into a plurality of small sections according to the size of the valve body, and using the small sections as the semi-finished product connector for later use;
s2: the semi-finished valve seat obtained in the step S1 is processed again through a secondary cold stamping and drawing process, and then drawn and shaped into a valve seat;
s3, punching and trimming the valve seat obtained in the step S2 through a cold stamping process to form a connecting hole for assembling the valve body on the valve clack, and forming an inner hole communicated with the pipeline on the extending part, thereby manufacturing a semi-finished valve body;
s4: forming a pipeline connecting part for connecting a pipeline by one end of the semi-finished connector in the step S1 through a finish machining process or a welding process or a cold stamping and deep drawing process, so as to manufacture the connector;
s5: and (5) connecting the semi-finished valve body obtained in the step (S3) with the other end of the connector in the step (S4) in a welding or threaded connection mode, and finally assembling the two connected semi-finished valve seats into the valve body by using a connecting piece.
By adopting the technical scheme, the original process for manufacturing the butterfly valve body is changed from casting to cold stamping and drawing, specifically, the valve body is split into 2 valve seats, connecting pieces and connecting heads, wherein the valve seats directly form a valve clack, an extending part, an upper valve neck and a lower valve neck through a steel plate through two cold stamping and drawing processes, then the valve seats are punched through a cold stamping process to form a connecting hole and an inner hole, the connecting heads are connected with the valve seats through a threaded connection and a laser welding process, and a pipeline connecting part for pipeline connection is formed on the connecting heads, the whole process replaces casting through cold stamping, finish machining, saw cutting and welding processes, the production cost and industrial pollution are greatly reduced, the product manufacturing efficiency is improved, the valve body formed through cold stamping has the advantages that crystal grains are obviously refined after mould pressing deformation, a large deformation amount is accumulated in the deformation process, and the area with isometric crystals in a microstructure is obviously increased, the valve seat has the advantages that the mass of the valve seat is increased under the same volume, the integral strength of the valve seat is improved, the problems that the cast valve body is easy to frost crack at a low temperature and is easy to air dry at a normal temperature are solved, and the service life of the valve seat is prolonged.
The manufacturing process of the environment-friendly butterfly valve body can be further set as follows: the cold stamping and drawing process adopted in the step S1 for preparing the semi-finished valve seat means that the steel plate is placed in a cold stamping and drawing die, and the outer contours of the valve flap, the extension part, the upper valve neck and the lower valve neck for secondary drawing of the semi-finished valve seat are punched out of the steel plate through a stamping device, so that the semi-finished valve seat is prepared.
By adopting the technical scheme, the cold stamping and drawing process aims to directly form the valve clack, the extension part, the upper valve neck and the lower valve neck outline in the semi-finished valve seat so as to ensure the sealing performance of the valve body.
The manufacturing process of the environment-friendly butterfly valve body can be further set as follows: the cold stamping drawing die comprises a first upper die plate and a first lower die plate which are correspondingly arranged, wherein a first valve clack concave film cavity used for stamping a valve clack is arranged in the first upper die plate, a first extension part concave film cavity used for drawing an extension part, a first upper valve neck concave film cavity used for drawing an upper valve neck and a first lower valve neck concave film cavity used for drawing a lower valve neck are arranged in the first valve clack concave film cavity, the first upper valve neck concave film cavity and the first lower valve neck concave film cavity are arranged at two ends of the first extension part concave film cavity, and a first valve clack convex film cavity, a first extension part convex film cavity, a first upper valve neck convex film cavity and a first lower valve neck convex film cavity which are in one-to-one correspondence with the first valve clack concave film cavity, the first extension part concave film cavity, the first upper valve neck concave film cavity and the first lower valve neck concave film cavity are arranged on the first lower die plate.
Adopt above-mentioned technical scheme, load the back on the punching machine with cold stamping deep-drawing mould, put into the steel sheet that needs processing between first cope match-plate pattern and first lower template, after first cope match-plate pattern and first lower template looks butt, the protruding membrane chamber of first valve clack decides the steel sheet and pushes the steel sheet after cutting off the valve clack on the first valve clack concave membrane intracavity formation disk seat, and drive the protruding membrane chamber of first extension, the protruding membrane chamber of first upper valve neck and the protruding membrane chamber of first lower valve neck are in the concave membrane chamber of first valve clack and the concave membrane chamber of first extension, the protruding membrane chamber of first upper valve neck and the concave membrane chamber of first lower valve neck counterbalance formation extension, upper valve neck and the subsequent cold stamping forming mould of lower valve neck confession carry out the plastic.
The manufacturing process of the environment-friendly butterfly valve body can be further set as follows: the secondary cold stamping and drawing process adopted in the step S2 for preparing the valve seat means that the semi-finished valve seat is placed in a cold stamping forming die, and the valve flap, the extension part, the upper valve neck and the lower valve neck in the semi-finished valve seat are drawn and shaped again by stamping equipment, so that the valve seat is manufactured.
By adopting the technical scheme, the secondary cold stamping and drawing process aims to perform drawing and shaping on the original valve clack, the extension part, the upper valve neck and the lower valve neck through secondary stamping of a cold stamping forming die in a semi-finished valve seat so as to ensure the formation of an ideal bent amplitude of the valve body.
The manufacturing process of the environment-friendly butterfly valve body can be further set as follows: the cold stamping forming die comprises a second upper die plate and a second lower die plate which are arranged correspondingly, a second valve flap concave cavity used for shaping a valve flap is arranged in the second upper die plate, a second extending part concave cavity used for shaping an extending part, a second upper valve neck concave cavity used for shaping an upper valve neck and a second lower valve neck concave cavity used for shaping a lower valve neck are arranged in the second valve flap concave cavity, the second upper valve neck concave cavity and the second lower valve neck concave cavity are arranged at two ends of the second extending part concave cavity, and a second valve flap convex cavity, a second extending part convex cavity, a second upper valve neck convex cavity and a second lower valve neck convex cavity which are in one-to-one correspondence with the second valve flap concave cavity, the second extending part concave cavity, the second upper valve neck concave cavity and the second lower valve neck concave cavity are arranged on the second lower die plate.
After the cold stamping forming die is loaded on the punching machine, a semi-finished valve seat which needs to be processed is placed between the second upper die plate and the second lower die plate, after the second upper die plate is abutted to the second lower die plate, the semi-finished valve seat is pushed into the second valve concave cavity by the second valve convex cavity, the second extending part convex cavity, the second upper valve neck convex cavity and the second lower valve neck convex cavity are driven to carry out shaping and chamfering treatment on the formed extending part, the upper valve neck and the lower valve neck in the second valve concave cavity, the second extending part concave cavity, the second upper valve neck concave cavity and the second lower valve neck concave cavity, and the subsequent valve core, the valve core rod and the connecting piece are assembled, and the extending part, the upper valve neck and the lower valve neck at the moment form a finished product bending amplitude.
The manufacturing process of the environment-friendly butterfly valve body can be further set as follows: the cold stamping process adopted in the step S3 for preparing the semi-finished valve body is to place the valve seat in a cold stamping, punching and trimming die so that a connecting hole for assembling the valve body is formed on the valve flap and an inner hole communicated with the pipeline is formed on the extension portion, thereby manufacturing the semi-finished valve body.
By adopting the technical scheme, the cold stamping process is that the semi-finished valve body is placed in a cold stamping die, and the semi-finished valve body is punched and trimmed by a stamping machine, so that the semi-finished valve body is obtained.
The manufacturing process of the environment-friendly butterfly valve body can be further set as follows: the finish machining process in step S4 is to make the surface or inner wall of the semi-finished connector into spiral threads with continuous protrusions with specific cross sections by a lathe for subsequent pipeline threaded connection, the welding process is to weld a pipeline flange at one end of the semi-finished connector by a laser welding technique for subsequent pipeline connection, and the cold stamping and deep drawing process is to place the semi-finished connector in a pipeline flange cold stamping and deep drawing die to directly form a pipeline connection part with two ends respectively connected with the valve seat and the pipeline.
By adopting the technical scheme, the semi-finished product connector supplies pipeline connection or directly forms a pipeline connecting part for pipeline connection through cold stamping in a mode of laser welding pipeline flanges or setting external threads, so that the valve body can be suitable for different pipelines, and the adaptability of the valve body is improved.
The manufacturing process of the environment-friendly butterfly valve body can be further set as follows: the welding mode of step S5 is to weld the other unprocessed end of the connector of step S4 to the extension of the semi-finished valve body by laser welding technology, and then assemble the two welded semi-finished valve seats into a valve body by a connector, the threaded connection mode of step S5 is to make the surfaces or inner walls of the semi-finished connector and the semi-finished valve body into spiral threads with continuous protrusions with specific cross sections by a lathe, so that the semi-finished connector and the semi-finished valve seat can be screwed together by the threads, and then assemble the two connected semi-finished valve seats into the valve body by the connector.
By adopting the technical scheme, the assembly means that the two symmetrical valves are mutually assembled into the valve body after the connecting piece (the screw and the nut) penetrates through the connecting hole, and the inner hole of the valve body can be connected with the connecting piece in a threaded connection or laser welding mode, so that the application range of valve body assembly is enlarged.
The utility model provides an upper valve neck and lower valve neck that butterfly valve body of making with above-mentioned technology, the disk seat of mutual symmetry, with both ends disk seat zonulae occludens's connecting piece and supply pipe connection's connector, the disk seat includes the valve clack, sets up extension on the valve clack, offer the connecting hole that supplies the connecting piece intercommunication on the valve clack, offer on the extension with the hole that the connector switched on mutually and set up the confession case pole installation at extension both ends, connector one end and female connection, the other end is equipped with the pipe connection portion that supplies pipe connection.
By adopting the technical scheme, the butterfly valve body comprises the valve seat, the connector and the connector which are mutually symmetrical, the valve seat is provided with the extending part to form a valve cavity for placing the valve core, the upper valve neck and the lower valve neck are arranged for installing the valve core rod and controlling the valve core to rotate, the connector is provided with the connecting hole for tightly connecting and assembling the valve seat after penetrating through the connector to form the valve body, the connector can be connected with an inner hole in the extending part of the valve seat in a threaded connection or laser welding mode, and the other end of the connector can be connected with a pipeline in a mode of arranging an external thread or a pipeline flange and the like.
The butterfly valve body can be further arranged as follows: the pipeline connecting part comprises a third thread which is arranged on the outer wall of the connector and is used for pipeline connection.
By adopting the technical scheme, the third thread is processed on the pipeline connecting part for pipeline connection, so that the workpiece can be processed by cutting, turning, milling, grinding and other processes to form the thread.
The butterfly valve body can be further arranged as follows: the pipeline connecting part comprises a pipeline flange, and the pipeline flange is connected with the connector through a welding process and conducted with the connector.
By adopting the technical scheme, along with the development of welding technology, the Chinese laser welding technology gradually enters the world advanced level, the seamless high sealing performance of the welding seam of the valve body is realized, specifically, the laser radiation heats the surface to be processed, the surface heat is diffused inwards through heat conduction, and the workpiece is melted to form a specific molten pool by controlling laser parameters such as the width, the energy, the peak power and the repetition frequency of laser pulse, so that the workpieces to be welded are connected.
The butterfly valve body can be further arranged as follows: the one end that the hole corresponds the connector is equipped with first screw thread, thereby the one end that the connector corresponds first screw thread is equipped with and can connects soon mutually with first screw thread and make the second screw thread that disk seat and connector are connected.
Adopt above-mentioned technical scheme, because threaded connection's connector also does not reveal can be guaranteed to the sealing washer of butterfly valve, so separate into two solitary widgets with connector and valve body, through threaded connection between, conveniently process promptly and improve production efficiency, make things convenient for follow-up maintenance again.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a perspective view schematically illustrating embodiment 1 of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic perspective view of a connector in embodiment 1 of the present invention.
Fig. 4 is a schematic view showing the connection of valve seats according to embodiments 1 to 4 of the present invention.
Fig. 5 is a schematic perspective view of embodiment 2 of the present invention.
Fig. 6 is a schematic perspective view of a cold drawing die according to embodiments 1 to 4 of the present invention.
Fig. 7 is a schematic perspective view of a cold press molding die according to embodiments 1 to 4 of the present invention.
Fig. 8 is a schematic perspective view of embodiment 3 of the present invention.
Fig. 9 is an exploded view of fig. 7.
Fig. 10 is a perspective view of embodiment 4 of the present invention.
Detailed Description
Example 1:
the manufacturing process of the environment-friendly butterfly valve body comprises the following steps:
s1, preparing a semi-finished valve seat, placing a steel plate in a cold stamping and drawing die according to the size of the valve body, and punching the steel plate to form the valve clack, the extension part, the upper valve neck and the lower valve neck outline for secondary drawing of the semi-finished valve seat through stamping equipment so as to prepare the semi-finished valve seat;
preparing a semi-finished product connector, cutting the whole steel pipe into a plurality of small sections according to the size of the valve body, and using the small sections as the semi-finished product connector for later use;
s2: placing the semi-finished valve seat obtained in the step S1 in a cold stamping forming die, and drawing and shaping the valve clack, the extension part, the upper valve neck and the lower valve neck in the semi-finished valve seat again through stamping equipment to manufacture a valve seat;
s3, placing the valve seat obtained in the step S2 in a cold stamping, punching and trimming die to form a connecting hole for assembling the valve body on the valve clack and form an inner hole communicated with the pipeline on the extending part, thereby manufacturing a semi-finished valve body;
s4: making one end of the semi-finished product connector in the step S1 into a spiral thread with continuous bulges with a specific section through a lathe, so that a subsequent pipeline can be installed, and making the surface of the semi-finished product connector into a spiral thread with continuous bulges with a specific section through the lathe at the other end of the semi-finished product connector for connecting a valve, so that the connector is made;
s5: making the surface of the semi-finished valve body obtained in the step S3 into a spiral thread with a continuous bulge with a specific section through a lathe, connecting the spiral thread with the thread of the connector in the step S4, and finally assembling the two connected semi-finished valve seats into a valve body by using a connecting piece;
as shown in fig. 1-4, a butterfly valve body manufactured by the above process comprises valve seats 1 which are symmetrical to each other, a connecting piece 2 for tightly connecting the valve seats 1 at two ends, and a connecting head 3 for connecting pipelines, the valve seat 1 comprises a valve clack 11, an extension part 12 arranged on the valve clack 11, a connecting hole 13 arranged on the valve clack 11 and used for communicating the connecting piece 2, an inner hole 121 arranged on the extension part 12 and communicated with the connector 3, and an upper valve neck 14 and a lower valve neck 15 which are arranged at two ends of the extension part 12 and used for installing a valve core rod, the one end that hole 121 corresponds connector 3 is equipped with first screw thread 122, thereby the one end that connector 3 corresponds first screw thread 122 is equipped with and connects the second screw thread 31 that makes disk seat 1 and connector 3 be connected soon mutually with first screw thread 122, and the other end is equipped with the pipe connection portion that supplies the pipe connection, be equipped with the third screw thread 32 that supplies the pipe connection on the pipe connection portion outer wall.
Example 2:
the manufacturing process of the environment-friendly butterfly valve body comprises the following steps:
s1, preparing a semi-finished valve seat, placing a steel plate in a cold stamping and drawing die according to the size of the valve body, and punching the steel plate to form the valve clack, the extension part, the upper valve neck and the lower valve neck outline for secondary drawing of the semi-finished valve seat through stamping equipment so as to prepare the semi-finished valve seat;
preparing a semi-finished product connector, cutting the whole steel pipe into a plurality of small sections according to the size of the valve body, and using the small sections as the semi-finished product connector for later use;
s2: placing the semi-finished valve seat obtained in the step S1 in a cold stamping forming die, and drawing and shaping the valve clack, the extension part, the upper valve neck and the lower valve neck in the semi-finished valve seat again through stamping equipment to manufacture a valve seat;
s3, placing the valve seat obtained in the step S2 in a cold stamping, punching and trimming die to form a connecting hole for assembling the valve body on the valve clack and form an inner hole communicated with the pipeline on the extending part, thereby manufacturing a semi-finished valve body;
s4: making one end of the semi-finished product connector in the step S1 into a spiral thread with a continuous bulge with a specific section on the surface of the semi-finished product connector through a lathe, so as to mount a subsequent pipeline;
s5: welding the semi-finished valve body obtained in the step S3 with the connector in the step S4 by a laser welding process, and finally assembling the two connected semi-finished valve seats into a valve body by a connecting piece;
as shown in fig. 5, a butterfly valve body manufactured by the above process, including the disk seat 1 of mutual symmetry, with the connecting piece 2 of both ends disk seat 1 zonulae occludens and the connector 3 that supplies the pipe connection, disk seat 1 includes valve clack 11, sets up extension 12 on valve clack 11, sets up the connecting hole 13 that supplies connecting piece 2 to communicate on valve clack 11, sets up the hole 121 that switches on mutually with connector 3 on extension 12 and sets up last valve neck 14 and lower valve neck 15 at the confession valve core pole installation at extension 12 both ends, hole 121 passes through welding process with connector 3 and is connected, and switches on each other, the one end that hole 121 was kept away from to connector 3 is equipped with the pipe connection portion that supplies the pipe connection, be equipped with the third screw thread 32 that supplies the pipe connection on the pipe connection portion outer wall.
Example 3:
the manufacturing process of the environment-friendly butterfly valve body comprises the following steps:
s1, preparing a semi-finished valve seat, placing a steel plate in a cold stamping and drawing die according to the size of the valve body, and punching the steel plate to form the valve clack, the extension part, the upper valve neck and the lower valve neck outline for secondary drawing of the semi-finished valve seat through stamping equipment so as to prepare the semi-finished valve seat;
preparing a semi-finished product connector, cutting the whole steel pipe into a plurality of small sections according to the size of the valve body, and using the small sections as the semi-finished product connector for later use;
s2: placing the semi-finished valve seat obtained in the step S1 in a cold stamping forming die, and drawing and shaping the valve clack, the extension part, the upper valve neck and the lower valve neck in the semi-finished valve seat again through stamping equipment to manufacture a valve seat;
s3, placing the valve seat obtained in the step S2 in a cold stamping, punching and trimming die to form a connecting hole for assembling the valve body on the valve clack and form an inner hole communicated with the pipeline on the extending part, thereby manufacturing a semi-finished valve body;
s4: making one end of the semi-finished product connector in the step S1 into a spiral thread with a continuous bulge with a specific section for valve connection through a lathe, and welding the other end of the semi-finished product connector with a pipeline flange through a laser welding technology or directly making the semi-finished product connector into the pipeline flange after the semi-finished product connector is placed in a pipeline flange cold stamping and drawing die so as to connect a subsequent pipeline;
s5: making the surface of the semi-finished valve body obtained in the step S3 into a spiral thread with a continuous bulge with a specific section through a lathe, connecting the spiral thread with the thread of the connector in the step S4, and finally assembling the two connected semi-finished valve seats into a valve body by using a connecting piece;
as shown in fig. 8 and 9, a butterfly valve body manufactured by the above process comprises valve seats 1 which are symmetrical to each other, connecting pieces 2 for tightly connecting the valve seats 1 at two ends, and a connecting head 3 for connecting a pipeline, wherein the valve seat 1 comprises a valve flap 11, an extending part 12 arranged on the valve flap 11, a connecting hole 13 arranged on the valve flap 11 and used for communicating the connecting pieces 2, an inner hole 121 arranged on the extending part 12 and communicated with the connecting head 3, and an upper valve neck 14 and a lower valve neck 15 arranged at two ends of the extending part 12 and used for installing a valve core rod, one end of the inner hole 121 corresponding to the connecting head 3 is provided with a first thread 122, one end of the connecting head 3 corresponding to the first thread 122 is provided with a second thread 31 which can be screwed with the first thread 122 so as to connect the valve seat 1 with the connecting head 3, the other end is provided with a pipeline connecting part for connecting the pipeline, the pipeline connecting part comprises a pipeline flange 32, the pipeline flange 32 and the connector 3 are connected through a welding process or directly formed through a cold stamping and drawing process and are mutually communicated.
Example 4:
the manufacturing process of the environment-friendly butterfly valve body comprises the following steps:
s1, preparing a semi-finished valve seat, placing a steel plate in a cold stamping and drawing die according to the size of the valve body, and punching the steel plate to form the valve clack, the extension part, the upper valve neck and the lower valve neck outline for secondary drawing of the semi-finished valve seat through stamping equipment so as to prepare the semi-finished valve seat;
preparing a semi-finished product connector, cutting the whole steel pipe into a plurality of small sections according to the size of the valve body, and using the small sections as the semi-finished product connector for later use;
s2: placing the semi-finished valve seat obtained in the step S1 in a cold stamping forming die, and drawing and shaping the valve clack, the extension part, the upper valve neck and the lower valve neck in the semi-finished valve seat again through stamping equipment to manufacture a valve seat;
s3, placing the valve seat obtained in the step S2 in a cold stamping, punching and trimming die to form a connecting hole for assembling the valve body on the valve clack and form an inner hole communicated with the pipeline on the extending part, thereby manufacturing a semi-finished valve body;
s4: welding one end of the semi-finished product connector in the step S1 with a pipeline flange through a laser welding technology, placing the unprocessed end of the semi-finished product connector in a cold stamping and deep drawing die of the pipeline flange to directly manufacture the pipeline flange so as to connect subsequent pipelines and manufacture the connector;
s5: welding the semi-finished valve body obtained in the step S3 with the connector obtained in the step S4 through a laser welding technology, and finally assembling the two connected semi-finished valve seats into a valve body through a connecting piece;
as shown in fig. 10, a butterfly valve body manufactured by the above process, including the valve seat 1 of mutual symmetry, with the connecting piece 2 of both ends valve seat 1 zonulae occludens and the connector 3 that supplies the pipe connection, valve seat 1 includes valve clack 11, sets up extension 12 on valve clack 11, sets up the connecting hole 13 that supplies connecting piece 2 to communicate on valve clack 11, sets up the hole 121 that switches on with connector 3 on extension 12 and sets up last valve neck 14 and lower valve neck 15 at the confession valve core pole installation at extension 12 both ends, hole 121 corresponds connector 3 and connects through welding process, and switches on each other, and the other end is equipped with the pipe connection portion that supplies the pipe connection, pipe connection portion is including pipe flange 32, pipe flange 32 is connected through welding process or directly is formed through cold stamping deep drawing process with connector 3, and switches on each other.
As shown in fig. 6, the cold stamping drawing die in embodiments 1 to 4 includes a first upper die plate 4 and a first lower die plate 5, wherein a first valve flap concave film cavity 41 for stamping the valve flap 11 is provided in the first upper die plate 4, a first extension concave film cavity 411 for drawing the extension portion 12, a first upper neck concave film cavity 412 for drawing the upper valve neck 14, and a first lower neck concave film cavity 413 for drawing the lower valve neck 15 are provided in the first valve flap concave film cavity 41, the first upper neck concave film cavity 412 and the first lower neck concave film cavity 413 are provided at two ends of the first extension concave film cavity 411, and the first lower die plate 5 is provided with a first convex film cavity 51, a first extension convex film cavity 511, and a first lower neck concave film cavity 413 which correspond to the first valve flap concave film cavity 41, the first extension concave film cavity 411, the first upper neck concave film cavity 412, and the first lower neck concave film cavity 413 one by one, A first upper neck relief chamber 512 and a first lower neck relief chamber 513.
As shown in fig. 7, the cold press forming die in embodiments 1 to 4 includes a second upper die plate 6 and a second lower die plate 7, wherein the second upper die plate 6 is provided with a second valve neck concave cavity 61 for shaping the valve flap 11, the second valve neck concave cavity 61 is provided with a second extension concave cavity 611 for shaping the extension 12, a second upper valve neck concave cavity 612 for shaping the upper valve neck 14, and a second lower valve neck concave cavity 613 for shaping the lower valve neck 15, the second upper valve neck concave cavity 612 and the second lower valve neck concave cavity 613 are provided at two ends of the second extension concave cavity 611, and the second lower die plate 7 is provided with a first valve neck concave cavity 71, a second extension convex cavity 711, and a second valve neck concave cavity 711, which are in one-to-one correspondence with the second valve neck concave cavity 61, the second extension concave cavity 611, the second upper valve neck concave cavity 612, and the second lower valve neck concave cavity 613, A second upper neck relief chamber 712 and a second lower neck relief chamber 713.
Claims (11)
1. The manufacturing process of the environment-friendly butterfly valve body comprises the following steps:
s1, preparing a semi-finished valve seat, and manufacturing a steel plate into the semi-finished valve seat with a valve clack, an extension part, an upper valve neck and a lower valve neck through a cold stamping and deep drawing process according to the size of the valve body;
preparing a semi-finished product connector, cutting the whole steel pipe into a plurality of small sections according to the size of the valve body, and using the small sections as the semi-finished product connector for later use;
s2: the semi-finished valve seat obtained in the step S1 is processed again through a secondary cold stamping and drawing process, and then drawn and shaped into a valve seat;
s3, punching and trimming the valve seat obtained in the step S2 through a cold stamping process to form a connecting hole for assembling the valve body on the valve clack, and forming an inner hole communicated with the pipeline on the extending part, thereby manufacturing a semi-finished valve body;
s4: forming a pipeline connecting part for connecting a pipeline by one end of the semi-finished connector in the step S1 through a finish machining process or a welding process or a cold stamping and deep drawing process, so as to manufacture the connector;
s5: connecting the semi-finished valve body obtained in the step S3 with the other end of the connector in the step S4 in a welding or threaded connection mode, and finally assembling the two connected semi-finished valve seats into a valve body by using a connecting piece;
the cold stamping and drawing process adopted when preparing the semi-finished valve seat in the step S1 is to place a steel plate in a cold stamping and drawing die, and punch the steel plate out the valve clack, the extension part, the upper valve neck and the lower valve neck outline for secondary drawing of the semi-finished valve seat through stamping equipment so as to prepare the semi-finished valve seat;
the secondary cold stamping and drawing process adopted in the step S2 for preparing the valve seat means that the semi-finished valve seat is placed in a cold stamping forming die, and the valve flap, the extension part, the upper valve neck and the lower valve neck in the semi-finished valve seat are drawn and shaped again through stamping equipment, so that the valve seat is manufactured;
the finishing process of step S4 is to form a spiral thread with a continuous protrusion of a specific section on the surface or inner wall of the semi-finished joint by a lathe, so as to thread the subsequent pipes.
2. The manufacturing process of the environment-friendly butterfly valve body according to claim 1, characterized in that: the cold stamping drawing die comprises a first upper die plate and a first lower die plate which are correspondingly arranged, wherein a first valve clack concave film cavity used for stamping a valve clack is arranged in the first upper die plate, a first extension part concave film cavity used for drawing an extension part, a first upper valve neck concave film cavity used for drawing an upper valve neck and a first lower valve neck concave film cavity used for drawing a lower valve neck are arranged in the first valve clack concave film cavity, the first upper valve neck concave film cavity and the first lower valve neck concave film cavity are arranged at two ends of the first extension part concave film cavity, and a first valve clack convex film cavity, a first extension part convex film cavity, a first upper valve neck convex film cavity and a first lower valve neck convex film cavity which are in one-to-one correspondence with the first valve clack concave film cavity, the first extension part concave film cavity, the first upper valve neck concave film cavity and the first lower valve neck concave film cavity are arranged on the first lower die plate.
3. The manufacturing process of the environment-friendly butterfly valve body according to claim 1, characterized in that: the cold stamping forming die comprises a second upper die plate and a second lower die plate which are arranged correspondingly, a second valve flap concave cavity used for shaping a valve flap is arranged in the second upper die plate, a second extending part concave cavity used for shaping an extending part, a second upper valve neck concave cavity used for shaping an upper valve neck and a second lower valve neck concave cavity used for shaping a lower valve neck are arranged in the second valve flap concave cavity, the second upper valve neck concave cavity and the second lower valve neck concave cavity are arranged at two ends of the second extending part concave cavity, and a second valve flap convex cavity, a second extending part convex cavity, a second upper valve neck convex cavity and a second lower valve neck convex cavity which are in one-to-one correspondence with the second valve flap concave cavity, the second extending part concave cavity, the second upper valve neck concave cavity and the second lower valve neck concave cavity are arranged on the second lower die plate.
4. The manufacturing process of the environment-friendly butterfly valve body according to claim 1, characterized in that: the cold stamping process adopted in the step S3 for preparing the semi-finished valve body is to place the valve seat in a cold stamping, punching and trimming die so that a connecting hole for assembling the valve body is formed on the valve flap and an inner hole communicated with the pipeline is formed on the extension portion, thereby manufacturing the semi-finished valve body.
5. The manufacturing process of the environment-friendly butterfly valve body according to claim 1, characterized in that: the welding process in step S4 is to weld a pipe flange at one end of the semi-finished connector by a laser welding technique to connect subsequent pipes, and the cold stamping and drawing process is to place the semi-finished connector in a cold stamping and drawing die of the pipe flange to directly form a pipe connection portion with two ends respectively connected to the valve seat and the pipe.
6. The manufacturing process of the environment-friendly butterfly valve body according to claim 1, characterized in that: the welding mode of step S5 is to weld the other unprocessed end of the connector of step S4 to the extension of the semi-finished valve body by laser welding technology, and then assemble the two welded semi-finished valve seats into a valve body by a connector, the threaded connection mode of step S5 is to make the surfaces or inner walls of the semi-finished connector and the semi-finished valve body into spiral threads with continuous protrusions with specific cross sections by a lathe, so that the semi-finished connector and the semi-finished valve seat can be screwed together by the threads, and then assemble the two connected semi-finished valve seats into the valve body by the connector.
7. A butterfly valve body manufactured according to the process for manufacturing an environment-friendly butterfly valve body according to any one of claims 1 to 6, characterized in that: including the disk seat of mutual symmetry, with both ends disk seat zonulae occludens's connecting piece and the connector that supplies the pipe connection, the disk seat includes the valve clack, sets up extension on the valve clack, offer the connecting hole that supplies the connecting piece intercommunication on the valve clack, offer on the extension with the hole that the connector switched on mutually and set up the last valve neck and the lower valve neck of the confession case pole installation at extension both ends, connector one end and female connection, the other end are equipped with the pipe connection portion that supplies the pipe connection.
8. The butterfly valve body of claim 7, wherein: the pipeline connecting part comprises a third thread which is arranged on the outer wall of the connector and is used for pipeline connection.
9. The butterfly valve body of claim 7, wherein: the pipeline connecting part comprises a pipeline flange, and the pipeline flange is connected with the connector through a welding process and conducted with the connector.
10. The butterfly valve body of claim 8, wherein: the one end that the hole corresponds the connector is equipped with first screw thread, thereby the one end that the connector corresponds first screw thread is equipped with and can connects soon mutually with first screw thread and make the second screw thread that disk seat and connector are connected.
11. The butterfly valve body of claim 9, wherein: the one end that the hole corresponds the connector is equipped with first screw thread, thereby the one end that the connector corresponds first screw thread is equipped with and can connects soon mutually with first screw thread and make the second screw thread that disk seat and connector are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985723.7A CN112045373B (en) | 2020-09-18 | 2020-09-18 | Manufacturing process of environment-friendly butterfly valve body and product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985723.7A CN112045373B (en) | 2020-09-18 | 2020-09-18 | Manufacturing process of environment-friendly butterfly valve body and product thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112045373A CN112045373A (en) | 2020-12-08 |
| CN112045373B true CN112045373B (en) | 2022-01-04 |
Family
ID=73603438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010985723.7A Active CN112045373B (en) | 2020-09-18 | 2020-09-18 | Manufacturing process of environment-friendly butterfly valve body and product thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112045373B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004232744A (en) * | 2003-01-30 | 2004-08-19 | Kubota Corp | Valve |
| CN204828851U (en) * | 2015-06-11 | 2015-12-02 | 陈春景 | New butterfly valve |
| CN205401745U (en) * | 2016-03-03 | 2016-07-27 | 温州天悦流体设备科技有限公司 | Fast -assembling butterfly valve |
| CN106392500A (en) * | 2016-12-06 | 2017-02-15 | 浙江苏泊尔卫浴有限公司 | Angle valve as well as angle valve manufacturing process and positioning tool |
| CN109396259A (en) * | 2018-11-22 | 2019-03-01 | 安徽中斯特流体设备有限公司 | A kind of butterfly valve automated production process equipment |
| CN110410508A (en) * | 2018-04-30 | 2019-11-05 | 费希尔控制产品国际有限公司 | Rotary valve with control element |
| CN111237518A (en) * | 2020-01-11 | 2020-06-05 | 无锡市华诚石化设备有限责任公司 | Special-shaped solid valve capable of improving mass transfer efficiency and stamping die thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3667726A (en) * | 1971-01-04 | 1972-06-06 | Teledyne Mid America Corp | Fabricated gasketed valve body construction for butterfly valves |
| CN2472845Y (en) * | 2001-03-14 | 2002-01-23 | 郑连华 | Punching welded valve body |
| CN103727247A (en) * | 2013-12-23 | 2014-04-16 | 重庆布莱迪仪器仪表有限公司 | Butterfly valve with sealed end faces |
| CN104214363B (en) * | 2014-08-29 | 2016-06-15 | 温州市阳泰紧固件有限公司 | A kind of single mouth ball valve and manufacturing process thereof |
| CN111531117A (en) * | 2020-04-30 | 2020-08-14 | 温州博宇机械有限公司 | Machining process of ball valve housing and ball valve housing |
-
2020
- 2020-09-18 CN CN202010985723.7A patent/CN112045373B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004232744A (en) * | 2003-01-30 | 2004-08-19 | Kubota Corp | Valve |
| CN204828851U (en) * | 2015-06-11 | 2015-12-02 | 陈春景 | New butterfly valve |
| CN205401745U (en) * | 2016-03-03 | 2016-07-27 | 温州天悦流体设备科技有限公司 | Fast -assembling butterfly valve |
| CN106392500A (en) * | 2016-12-06 | 2017-02-15 | 浙江苏泊尔卫浴有限公司 | Angle valve as well as angle valve manufacturing process and positioning tool |
| CN110410508A (en) * | 2018-04-30 | 2019-11-05 | 费希尔控制产品国际有限公司 | Rotary valve with control element |
| CN109396259A (en) * | 2018-11-22 | 2019-03-01 | 安徽中斯特流体设备有限公司 | A kind of butterfly valve automated production process equipment |
| CN111237518A (en) * | 2020-01-11 | 2020-06-05 | 无锡市华诚石化设备有限责任公司 | Special-shaped solid valve capable of improving mass transfer efficiency and stamping die thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112045373A (en) | 2020-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112045375B (en) | Manufacturing process of environment-friendly valve body and product thereof | |
| CN204818104U (en) | Numerical control lathe's lathe tool cooling device | |
| CN105889744B (en) | A kind of spinning flange ring and its forming technology | |
| CN105750841B (en) | A kind of processing method of ferritic stainless steel end socket | |
| CN112045373B (en) | Manufacturing process of environment-friendly butterfly valve body and product thereof | |
| CN113523733A (en) | Production process of stainless steel water meter shell | |
| EP3147045B1 (en) | A manufacturing method for wear-resistant transmission link assemblies of automobile turbochargers | |
| CN112045374B (en) | Manufacturing process of high-strength valve body and product thereof | |
| CN103335122A (en) | Threaded connection soft seal butterfly valve | |
| CN203061589U (en) | Planet shaft warm extrusion die with cooling device | |
| CN1015694B (en) | Universal valve, tube-fitting expansion pressure forming process | |
| CN204533591U (en) | The stainless steel valve seat of integrally casting on modulating valve valve body | |
| CN210501668U (en) | Assembled roller without welding seam | |
| CN110805732B (en) | Production process of all-welded ball valve | |
| CN210859158U (en) | Fire pump body | |
| CN219413663U (en) | High-strength valve body | |
| US9933101B2 (en) | Valve housing with a spindle guide and method for production thereof | |
| KR100666199B1 (en) | A manufacturing process of disk for butterfly valve | |
| CN206263526U (en) | A kind of anti-deformation device for fuel tank welding | |
| CN112963581A (en) | Proportional three-way valve core of hydrogen fuel cell cooling system and manufacturing method thereof | |
| CN114776819A (en) | Manufacturing process of high-strength check valve and valve body and manufacturing process of check plate | |
| CN201783773U (en) | Device for preventing welding deformation of stainless steel spherical piston | |
| CN112303255B (en) | Exhaust butterfly valve for automobile and production process thereof | |
| CN221076867U (en) | Water-cooled runner axle seat | |
| CN210088000U (en) | Stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |