Ball valve and machining process thereof

Abstract

The application relates to the technical field of ball valve design, and discloses a ball valve which comprises a valve body and a handle body, further comprises a plastic sleeve which is used for being sleeved at the end of the handle body and has a section in the shape of a Chinese character 'n', the plastic sleeve is made of polytetrafluoroethylene material, the two sides of the plastic sleeve are integrally provided with clamping parts which are abutted on the outer wall of the handle body, the clamping parts are inclined towards the inside of the plastic sleeve, and the end of the plastic sleeve which is far away from the handle body is also integrally provided with a circular arc end. The plastic sleeve is wrapped at the end of the handle body, wherein the clamping parts of the plastic sleeve are used for stably clamping the plastic sleeve on the handle body, at this time, since the plastic sleeve is made of polytetrafluoroethylene material, the polytetrafluoroethylene material has the characteristics of high-temperature resistance, corrosion resistance and aging resistance, therefore, the plastic sleeve made of the polytetrafluoroethylene material can adapt to harsh installation environments, and finally can be beneficial to efficiently and stably wrapping the handle body by the plastic sleeve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball valve design, in particular to a ball valve and a processing technology thereof. BACKGROUND

[0002] Ball valve, the opening and closing element (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for flow regulation and control, and the V-shaped ball core of the hard sealing V-shaped ball valve has a strong shearing force with the hard alloy welded metal valve seat, and is particularly suitable for media containing fibers and small solid particles. The multi-way ball valve can not only flexibly control the flow of media, but also can switch the flow direction, and can also close any channel to connect the other two channels.

[0003] The Chinese patent with publication number CN109055807 and publication date December 21, 2018 discloses a processing technology of a high-pressure internal thread ball valve, which specifically comprises the following steps: (1) the main material is respectively turned into a bonnet, a valve stem, a valve ball and a pressure cap by a lathe, and a pouring liquid is obtained by melting the main material to form a valve body; the specific operation of pouring is as follows: a. according to the shape of the valve body, quartz sand, water glass and bentonite are mixed as molding materials to mix a casting mold, and a sprue is opened on the casting mold, and then the casting mold is placed in an oven for drying at 220-250℃; b. the pouring liquid is poured into the casting mold to form a valve body blank, the pouring speed is 67-70kg / s, the pouring time is 15-20s, and a small amount of modifier is added to the casting raw material solution during pouring; the chemical composition of the modifier is as follows: 92% of rare earth silicon, 3% of bismuth ingot, 3% of magnesium ingot and 2% of aluminum ingot; c. after pouring, the entire valve body blank is kept warm for 7-9h together with the casting mold to eliminate residual stress, and the valve body blank is taken out and air-cooled to room temperature, and then the valve body blank is sequentially subjected to normalizing and tempering treatment; normalizing: the valve body blank is sent into the furnace and heated to 450-500℃, and then furnace-cooled to 320-350℃, and then the furnace door is opened to continue slow cooling to 250-300℃, and then air-cooled to room temperature; tempering: the valve body blank after normalizing is heated to 380-400℃, then kept warm for 20-23min, then taken out and water-cooled or oil-cooled to room temperature; d. the valve body blank is polished, then soaked in an oil removal tank at 55-60℃ for 2min, then taken out and rinsed with hot water; e. deburring the valve body blank, and cleaning the surface of the valve body with a high-pressure air gun to obtain a valve body finished product; (2) assembling all parts to obtain a ball valve, and then performing high-temperature and sealing tests.

[0004] The Chinese patent with publication number CN217874300U and publication date of November 22, 2022 discloses a bidirectional hard sealing adjusting cut-off ball valve, which comprises a valve body, a ball body and a valve rod. The ball body is arranged in the inner cavity of the valve body, the valve rod is arranged through the upper end of the valve body, the inner end of the valve rod is connected with the ball body, and the outer end of the valve rod is connected with a handle.

[0005] In the prior art, in order to avoid the discomfort caused by the edges of the steel handle when holding and rotating the handle, a rubber sleeve is wrapped outside the handle to improve the comfort when rotating the handle. However, in some harsh environments, such as installing the ball valve in the sewer pipeline, the rubber sleeve outside the handle is easily affected by the environment and accelerates the aging and corrosion speed, eventually leading to damage of the rubber sleeve. SUMMARY

[0006] The purpose of the present application is to provide a ball valve that facilitates efficient and stable wrapping of the handle body with a plastic sleeve.

[0007] The above technical purpose of the present application is achieved by the following technical solution: a ball valve comprising a valve body and a handle body, further comprising a plastic sleeve for wrapping around the end of the handle body and having a "N" shaped cross section. The plastic sleeve is made of polytetrafluoroethylene material. The two sides of the plastic sleeve are integrally provided with clamping portions that abut against the outer wall of the handle body. The clamping portions are inclined towards the inside of the plastic sleeve. The end of the plastic sleeve away from the handle body is also integrally provided with a circular arc end.

[0008] By wrapping the plastic sleeve around the end of the handle body, the clamping portions of the plastic sleeve are used to stably clamp the plastic sleeve on the handle body. Since the plastic sleeve is made of polytetrafluoroethylene material, which has the characteristics of high temperature resistance, corrosion resistance and aging resistance, the plastic sleeve made of polytetrafluoroethylene material can adapt to harsh installation environments, thereby facilitating efficient and stable wrapping of the handle body with the plastic sleeve.

[0009] The purpose of the present application is also to provide a processing technology for a ball valve, which facilitates convenient assembly between the handle body and the plastic sleeve.

[0010] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a ball valve processing technology, characterized by comprising the following steps:

[0011] S1: Stamping -- Using a stamping machine to press sheet metal into a bent handle body;

[0012] S2: Punching - Using a punching machine to punch holes in the round holes on the handle body;

[0013] S3: Polishing -- Polishing the handle body;

[0014] S4: Heat Treatment -- Heat treatment is performed on the handle body, specifically heating, cooling, first tempering, second tempering, and quenching.

[0015] S5: Electroplating -- Zinc-nickel alloy plating on the surface of the handle body;

[0016] S6: Assembly - The plastic sleeve is assembled onto the handle body by a continuous engagement device;

[0017] S7: Final Assembly -- Assemble the handle body and valve body.

[0018] By adopting the above technical solution, the handle body can be formed after stamping, punching, grinding and heat treatment. The corrosion resistance of the handle body can be improved by electroplating zinc-nickel alloy, which helps to extend the service life of the handle body. At the same time, the continuous snap-fit ​​device can facilitate the continuous assembly and processing of the plastic sleeve and the handle body.

[0019] A further configuration of the present invention is as follows: the continuous engaging device includes a worktable, a base disposed on the worktable, a long loading rod disposed on the base, a processing groove formed in the base for the long loading rod to be embedded, a plurality of slots formed in the long loading rod for the handle body to be embedded at the end away from the plastic sleeve, a bracket disposed on the worktable and located on one side of the base, a storage box disposed on the upper end of the bracket for storing a plurality of plastic sleeves, and a driving component disposed on the worktable for engaging the plastic sleeves in the storage box downward into the end of the handle body. The storage box has an opening at one end above the base, and the opening is provided with two "U"-shaped limiting buckles, which allow a single plastic sleeve to enter. The storage box is also provided with a pushing member for pushing the plurality of plastic sleeves in the storage box toward the limiting buckles.

[0020] By adopting the above technical solution, the handle bodies of multiple plastic sleeves to be assembled are embedded in the slots of the long loading rod. Then, the long loading rod is moved so that the handle body moves to the position below the limit buckle. Then, the driving component is used to push a plastic sleeve in the limit buckle downward and lock it into the end of the handle body, thereby completing the assembly of a handle body and a plastic sleeve.

[0021] The process involves using a pusher to push multiple plastic sleeves inside the storage box toward the limiting buckle. Once the plastic sleeve inside the limiting buckle moves downward and assembles with the handle body, the pusher can then push it another distance equal to the thickness of a plastic sleeve, allowing the next plastic sleeve to embed into the limiting buckle. After the next drive component works, it will be assembled with the handle body, thus completing the continuous snap-fit ​​assembly between multiple handle bodies and plastic sleeves.

[0022] A further configuration of the present invention includes: a lifting platform disposed above the limit buckle; a push rod disposed below the lifting platform with its lower end embedded in the limit buckle to push the plastic sleeve downward; a baffle disposed above the storage box for the push rod to engage during vertical lifting; a fixing plate disposed above the push rod; a guide hole opened on the fixing plate; a guide post disposed above the storage box and extending vertically upward through the guide hole; a return spring sleeved on the guide post with one end connected to the fixing plate and the other end connected to the storage box; a platform disposed above the guide post; a drive motor disposed on the platform; an eccentric wheel disposed on the output shaft of the drive motor and used to abut against the lifting platform; and a linkage disposed between the base and the lifting platform and used to move the long loading rod so that the next handle body moves below the limit buckle.

[0023] By adopting the above technical solution, the drive motor drives the eccentric wheel to deflect downwards, which in turn abuts against the lifting platform, thereby driving the push rod to move downwards. After the push rod moves downwards, it can be embedded in the limit buckle, thus pushing the plastic sleeve downwards and assembling it with the handle body. At the same time, when the push rod moves downwards, the fixing plate moves downwards along the guide post, causing the return spring to be compressed. When the plastic sleeve in the limit buckle is assembled with the handle body, the eccentric wheel deflects upwards and the return spring elastically recovers. Then, the return spring can push the push rod upwards, making it easier for the next plastic sleeve to be embedded in the empty limit buckle. At this time, the eccentric wheel and the return spring can drive the push rod to move up and down reciprocally. As the long loading rod moves, one plastic sleeve after another can be assembled with the handle body.

[0024] A further configuration of the present invention is as follows: the linkage includes a fixed column disposed at one end of the lifting platform and extending vertically downward, a horizontal arm disposed at the lower end of the fixed column, a swing arm rotatably connected at the upper end of the horizontal arm, a mounting plate disposed on the horizontal arm, a connecting spring connected at one end to the mounting plate and at the other end to the swing arm, a guide slope disposed on one side of the base and extending downward in an inclined direction, a vertical surface disposed on one side of the base and located at the lower end of the guide slope, and a "U"-shaped locking arm for the swing arm to be inserted is disposed on the side of the long loading rod and at the position of each locking slot, and the two ends of the guide slope are respectively located at the positions of two adjacent locking arms.

[0025] By adopting the above technical solution, when the lifting platform and push rod gradually move down and the push rod does not contact the plastic sleeve in the limit buckle, the lifting platform also drives the fixed column and horizontal arm to move down. At the same time, the lower end of the swing arm on the horizontal arm is embedded in the locking arm of the long loading rod, and the lower end of the swing arm abuts against the upper end of the guide slope. As the lifting platform continues to move down, the lower end of the swing arm can move downward along the guide slope, and the connecting spring is stretched. At this time, the swing arm can push the long loading rod to move through the locking arm. When the lower end of the swing arm moves to the lower end of the guide slope and is in a vertical position, the upper and lower handle bodies of the long loading rod can move to below the limit buckle.

[0026] As the lifting platform continues to move downwards, the lower end of the push rod will abut against the plastic sleeve inside the limit buckle. As the push rod pushes the plastic sleeve downwards, the swing arm moves vertically downwards along the vertical plane. When the push rod completes the assembly of the plastic sleeve and the handle body and returns to its original position, the swing arm also moves upwards and disengages from the locking arm. At the same time, the connecting spring elastically recovers and pulls the swing arm to the initial tilt position, thus waiting for the next reciprocating assembly movement.

[0027] A further provision of the present invention is that the workbench is also provided with a locking component for preventing the long loading rod from moving in the opposite direction. The locking component includes a mounting post on the workbench, a fixed shaft on the upper end of the mounting post, a bushing sleeve on the fixed shaft, a reset torsion spring on the fixed shaft with one end connected to the bushing sleeve and the other end connected to the mounting post, a swing rod on the bushing sleeve, and a locking head with a right-angled triangular cross-section on the end of the swing rod away from the bushing sleeve, wherein the hypotenuse of the cross-section of the locking head is located on the side closer to the base.

[0028] By adopting the above technical solution, in order to avoid the reverse movement of the long loading rod caused by the restoring tension of the connecting spring, after the long loading rod has moved, the locking head at the end of the swing arm can be embedded in the locking arm. Since the inclined side of the locking head is located on the side closer to the base, the locking head can limit the reverse movement of the locking arm. When the long loading rod needs to move forward, the locking arm can abut against the inclined side of the locking head, thereby pushing the swing arm to swing downward, causing the locking head to disengage from the locking arm and the return torsion spring to twist. When the next locking arm moves to the locking head position, the locking head can be embedded in the next locking arm, thereby positioning the movement of the long loading rod. Finally, it is convenient to stably assemble the handle body and the plastic sleeve on the long loading rod.

[0029] A further feature of the present invention is that a guide surface is provided on the side of the processing groove for the handle body to be embedded in the slot.

[0030] By adopting the above technical solution, when the long loading rod moves in the processing groove, some handle bodies that are not fully embedded in the slot can abut against the guide surface. The guide surface can guide the handle body, so that the handle body is stably embedded in the slot.

[0031] A further embodiment of the present invention includes: the pushing member comprising a push plate located inside the storage box and abutting against multiple plastic sleeves, an elongated hole opened on the lower side of the storage box, a boss located at the lower end of the push plate and extending through the elongated hole, guide sleeves located on both sides of the boss, two guide shafts located on the lower side of the storage box and respectively passing through the two guide sleeves, a fixed platform located at both ends of the guide shaft and connected to the storage box, and a mounting spring sleeved on the guide sleeve with one end connected to the guide sleeve and the other end connected to the fixed platform.

[0032] By adopting the above technical solution, the elastic restoring force of the installed spring is used to drive the push plate inside the storage box to move. The push plate can then move along the long hole, at which point the push plate can push multiple plastic sleeves toward the limit buckle.

[0033] A further feature of the present invention is that a detachable plate is provided on one side of the storage box, the cross-section of the detachable plate is dovetail-shaped, and a dovetail groove is provided on the storage box for the detachable plate to be inserted.

[0034] By adopting the above technical solution, when it is necessary to replenish the plastic sleeve in the storage box, the detachable plate can be slid along the dovetail groove to remove the detachable plate from the storage box, and then the plastic sleeve in the storage box can be easily replenished.

[0035] In summary, the beneficial effects of this invention are:

[0036] 1. The plastic sleeve is stably attached to the handle body by using the snap-fit ​​part of the plastic sleeve. Since the plastic sleeve is made of polytetrafluoroethylene (PTFE), which has the characteristics of high temperature resistance, corrosion resistance, and aging resistance, the plastic sleeve made of PTFE can adapt to harsh installation environments. Ultimately, this allows the plastic sleeve to efficiently and stably wrap the handle body.

[0037] 2. First, insert the handles of multiple plastic sleeves to be assembled into the slots of the long loading rod, and add multiple plastic sleeves into the storage box. The drive motor drives the eccentric wheel to deflect downwards, so that the eccentric wheel can abut against the lifting platform, thereby driving the push rod to move down. When the lifting platform and push rod gradually move down and the push rod has not yet contacted the plastic sleeve in the limit buckle, the lifting platform also drives the fixed column and horizontal arm to move down. At the same time, the lower end of the swing arm on the horizontal arm is inserted into the clamping arm of the long loading rod, and the lower end of the swing arm abuts against the upper end of the guide slope. As the lifting platform continues to move down, the lower end of the swing arm can move downwards along the guide slope, and the connecting spring is stretched. At this time, the swing arm can push the long loading rod to move through the clamping arm. When the lower end of the swing arm moves to the lower end of the guide slope and is in a vertical position, the handle of the long loading rod can move to the lower part of the limit buckle, where the clamp head is inserted into the clamping arm, thereby limiting the position of the long loading rod after movement.

[0038] As the lifting platform continues to descend, the lower end of the push rod abuts against the plastic sleeve inside the limit buckle. After the push rod moves down, it can be embedded in the limit buckle, thus pushing the plastic sleeve downward and assembling it with the handle body. The swing arm moves vertically downward along the vertical plane. At the same time, when the push rod moves down, the fixing plate moves down along the guide post, causing the return spring to be compressed. When the plastic sleeve inside the limit buckle is assembled with the handle body, the eccentric wheel deflects upward and the return spring elastically recovers. Then, the return spring can push the push rod upward, making it easier for the next plastic sleeve to be embedded in the empty limit buckle. At the same time, the swing arm also moves upward and disengages from the locking arm. Simultaneously, the connecting spring elastically recovers and pulls the swing arm to the initial tilt position, thus waiting for the next reciprocating assembly movement. Finally, the continuous locking assembly between multiple handle bodies and plastic sleeves can be completed. Attached Figure Description

[0039] Figure 1 This is an exploded view of the handle body and plastic sleeve in this invention;

[0040] Figure 2 This is a process flow diagram of the processing technology of the ball valve handle in this invention;

[0041] Figure 3 This is a schematic diagram of the continuous engagement device in this invention. At this time, the push rod is at the lower limit position and the plastic sleeve is assembled with the end of the handle body.

[0042] Figure 4 This is a schematic diagram of the continuous engagement device in this invention after omitting the long loading rod;

[0043] Figure 5 This is a magnified view of a portion of the structure of the long loading rod in this invention;

[0044] Figure 6 yesFigure 3 Enlarged view of section A;

[0045] Figure 7 This is an enlarged view of the structure of the storage box in this invention, wherein the detachable plate is shown exploded.

[0046] Figure 8 This is a schematic diagram of the continuous engagement device in this invention. At this time, the push rod is at the upper limit position and the swing arm is in a natural tilting state.

[0047] Figure 9 This is an enlarged view of the structure of the locking component in this invention;

[0048] Figure 10 This is a structural plan view of the continuous engagement device in this invention. At this time, the push rod is in the middle position and the lower end of the swing arm slides down along the guide slope.

[0049] Reference numerals: 1. Handle body; 2. Plastic sleeve; 21. Snap-fit ​​part; 22. Arc end; 3. Continuous snap-fit ​​device; 31. Worktable; 32. Base; 321. Guide surface; 33. Long loading rod; 331. Clamping arm; 34. Machining groove; 35. Slot; 36. Bracket; 37. Storage box; 371. Limit buckle; 372. Detachable plate; 373. Dovetail slide; 38. Drive assembly; 381. Lifting platform; 382. Push rod; 383. Baffle; 384. Fixing plate; 385. Guide hole; 386. Guide post; 387. Return spring; 388 389. Platform; 390. Drive motor; 391. Eccentric wheel; 391. Linkage component; 3911. Fixed column; 3912. Horizontal arm; 3913. Swing arm; 3914. Mounting plate; 3915. Connecting spring; 3916. Guide slope; 3917. Vertical surface; 4. Pushing component; 41. Push plate; 42. Long hole; 43. Boss; 44. Guide sleeve; 45. Guide shaft; 46. Fixed platform; 47. Mounting spring; 58. Locking component; 591. Mounting column; 592. Fixed shaft; 593. Bushing; 594. Return torsion spring; 595. Swing rod; 596. Locking head. Implementation

[0050] The present invention will be further described in detail below with reference to the accompanying drawings.

[0051] A ball valve, see reference Figure 1The ball valve includes a valve body, a handle body 1, and a plastic sleeve 2. The handle body 1 is mounted on the valve body, and the plastic sleeve 2 is fitted onto the end of the handle body 1 with a cross-section in the shape of a "U". The plastic sleeve 2 is made of polytetrafluoroethylene (PTFE), which has the characteristics of high temperature resistance, corrosion resistance, and aging resistance. At the same time, the two sides of the plastic sleeve 2 are integrally provided with snap-fit ​​parts 21. When the plastic sleeve 2 is snapped into the handle body 1, the snap-fit ​​parts 21 abut against the outer wall of the handle body 1, and the snap-fit ​​parts 21 are inclined towards the inside of the plastic sleeve 2. The end of the plastic sleeve 2 away from the handle body 1 is also integrally provided with an arc end 22.

[0052] Principle: The plastic sleeve 2 is stably attached to the handle body 1 by using the snap-fit ​​part 21 of the plastic sleeve 2. Since the plastic sleeve 2 is made of polytetrafluoroethylene (PTFE), which has the characteristics of high temperature resistance, corrosion resistance, and aging resistance, the plastic sleeve 2 made of PTFE can adapt to harsh installation environments. Ultimately, this allows the plastic sleeve 2 to efficiently and stably wrap the handle body 1.

[0053] A ball valve manufacturing process, referring to... Figure 2 The processing technology for this type of ball valve includes the following steps:

[0054] S1: Stamping -- Using a stamping machine to stamp sheet metal into a bent handle body 1;

[0055] S2: Punching - Using a punching machine to punch holes in the round holes on the handle body 1;

[0056] S3: Polishing -- Polish the handle body 1;

[0057] S4: Heat treatment -- Heat treatment is performed on the handle body 1, specifically heating, cooling, first tempering, second tempering, and quenching.

[0058] S5: Electroplating -- Zinc-nickel alloy plating is applied to the surface of the handle body 1;

[0059] S6: Assembly - The plastic sleeve 2 is snapped onto the handle body 1 by the continuous snapping device 3;

[0060] S7: Final Assembly -- Assemble the handle body 1 and the valve body.

[0061] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6The continuous engaging device 3 includes a worktable 31, a base 32, a long loading rod 33, a processing groove 34, a slot 35, a bracket 36, a storage box 37, and a drive assembly 38. The base 32 is welded to the worktable 31, and the long loading rod 33 is disposed on the base 32. The processing groove 34 is formed in the base 32 and allows the long loading rod 33 to be inserted. The long loading rod 33 can move along the processing groove 34. Multiple slots 35 are formed on the long loading rod 33 and are evenly spaced along the extension direction of the long loading rod 33. The shape of the slot 35 is adapted to the shape of the handle body 1 so that the end of the handle body 1 away from the plastic sleeve 2 can be inserted. The handle body 1 can be inserted into the slot 35 from the side of the long loading rod 33. At the same time, a guide surface 321 is also provided on the side of the processing groove 34 for the handle body 1 to be inserted into the slot 35.

[0062] Reference Figure 3 , Figure 4 , Figure 7 The bracket 36 is fixed to the workbench 31 by bolts and is located on one side of the base 32. The storage box 37 is fixed to the upper end of the bracket 36 by bolts. The storage box 37 can store multiple plastic sleeves 2. The storage box 37 has an opening at one end above the base 32. The opening of the storage box 37 is provided with a "U"-shaped limit buckle 371. There are two limit buckles 371, one above the other, for a single plastic sleeve 2 to enter. The storage box 37 also has a detachable plate 372 on one side. The detachable plate 372 has a dovetail-shaped cross section. The storage box 37 has a dovetail groove 373 for inserting the detachable plate 372. Removing the detachable plate 372 makes it easy to replenish the plastic sleeves 2 in the storage box 37.

[0063] Reference Figure 7 The storage box 37 also includes a pusher 4, which is used to push the multiple plastic sleeves 2 inside the storage box 37 toward the limiting buckle 371. The pusher 4 includes a push plate 41, an elongated hole 42, a boss 43, a guide sleeve 44, a guide shaft 45, a fixing platform 46, and a mounting spring 47. The push plate 41 is located inside the storage box 37 and abuts against the multiple plastic sleeves 2, while the elongated hole 42 is opened on the lower side of the storage box 37. At the same time, the boss 43 is integrally set at the lower end of the push plate 41 and extends through the elongated hole 47. Hole 42, and guide sleeve 44 are integrally set on both sides of boss 43. There are two guide shafts 45 and they are set on the lower side of storage box 37. The two guide shafts 45 pass through the two guide sleeves 44 respectively. The fixing platform 46 is welded to both ends of the guide shaft 45 and welded to the storage box 37. At the same time, the mounting spring 47 is sleeved on the guide sleeve 44. One end of the mounting spring 47 is welded to the guide sleeve 44 and the other end is welded to the fixing platform 46. The mounting spring 47 is always in a compressed state.

[0064] ReferenceFigure 4 The drive assembly 38 is mounted on the workbench 31 and is used to snap the plastic sleeve 2 inside the storage box 37 downward into the end of the handle body 1. This drive assembly 38 includes a lifting platform 381, a push rod 382, ​​a baffle 383, a fixing plate 384, a guide hole 385, a guide post 386, a return spring 387, a platform 388, a drive motor 389, an eccentric wheel 390, and a linkage 391. The lifting platform 381 is positioned above the limit buckle 371, and the push rod 382 is welded to the lower side of the lifting platform 381. After the push rod 382 moves downward, its lower end can be embedded in the limit buckle 371, thereby pushing the plastic sleeve 2 downward. At the same time, the baffle 383 is integrally mounted on the storage box 37. The upper side of the storage box 37 is fitted with the push rod 382 for vertical lifting, and the fixing plate 384 is integrally set on the upper end of the push rod 382. The guide hole 385 is opened on the fixing plate 384. The guide post 386 is welded to the upper side of the storage box 37 and extends vertically upward and passes through the guide hole 385. The return spring 387 is sleeved on the guide post 386, with the fixing plate 384 welded to one end and the storage box 37 welded to the other end. Meanwhile, the platform 388 is welded to the upper end of the guide post 386, and the drive motor 389 is fixed to the platform 388 by bolts. The eccentric wheel 390 is keyed to the output shaft of the drive motor 389 and abuts against the upper surface of the lifting platform 381.

[0065] Reference Figure 3 , Figure 4 The linkage 391 is located between the base 32 and the lifting platform 381 and is used to move the long loading rod 33 so that the next handle body 1 moves below the limit buckle 371. This linkage 391 includes a fixed column 3911, a horizontal arm 3912, a swing arm 3913, a mounting plate 3914, a connecting spring 3915, a guide slope 3916, and a vertical surface 3917. The upper end of the fixed column 3911 is welded to one end of the lifting platform 381 and extends vertically downward. The horizontal arm 3912 is welded to the lower end of the fixed column 3911 and extends horizontally. The upper end of the swing arm 3913 is rotatably connected to the end of the horizontal arm 3912 via a shaft and bearing. The mounting plate 3914 is welded to the horizontal arm 3912. One end of the connecting spring 3915 is welded to the mounting plate 3914, and the other end is welded to the swing arm 3913. When the connecting spring 3915 is in its natural state, the swing arm 3913 is tilted towards the side closer to the base 32 (see reference). Figure 8Meanwhile, the guide slope 3916 is opened on one side of the base 32 and extends in a downward direction, while the vertical surface 3917 is opened on one side of the base 32 and located at the lower end of the guide slope 3916. The long loading rod 33 is integrally provided with a clamping arm 331 on the side and at the position of each clamping slot 35. The clamping arm 331 is "U" shaped and is used for the swing arm 3913 to be inserted. At the same time, the two ends of the guide slope 3916 are located at the positions of two adjacent clamping arms 331.

[0066] Reference Figure 3 , Figure 4 Figure 9 shows that the workbench 31 is also equipped with a locking component 5 to prevent the long loading rod 33 from moving in the opposite direction. This locking component 5 includes a mounting post 51, a fixed shaft 52, a bushing 53, a return torsion spring 54, a swing rod 55, and a locking head 56. The lower end of the mounting post 51 is welded to the workbench 31, while the fixed shaft 52 is welded to the upper end of the mounting post 51. The bushing 53 is fitted onto the fixed shaft 52, and the return torsion spring 54 is fitted onto the fixed shaft 52 with one end welded to the bushing 53 and the other end welded to the mounting post 51. The swing rod 55 is integrally set onto the bushing 53, and the locking head 56 is integrally set onto the end of the swing rod 55 away from the bushing 53 with a right-angled triangular cross section. The hypotenuse of the cross section of the locking head 56 is located on the side closer to the base 32.

[0067] Principle: First, the handles 1 of multiple plastic sleeves 2 to be assembled are embedded into the slots 35 of the long loading rod 33, and multiple plastic sleeves 2 are added into the storage box 37. The drive motor 389 drives the eccentric wheel 390 to deflect downwards, causing the eccentric wheel 390 to abut against the lifting platform 381, thus moving the push rod 382 downwards. As the lifting platform 381 and push rod 382 gradually move downwards, and the push rod 382 does not contact the plastic sleeve 2 in the limit buckle 371, the lifting platform 381 also drives the fixed column 3911 and the horizontal arm 3912 to move downwards. Simultaneously, the lower end of the swing arm 3913 on the horizontal arm 3912 is embedded in the locking arm 331 of the long loading rod 33, and the swing arm... The lower end of the boom 3913 abuts against the upper end of the guide slope 3916. As the lifting platform 381 continues to move downward, the lower end of the swing arm 3913 can move downward along the guide slope 3916, and the connecting spring 3915 is stretched. At this time, the swing arm 3913 can push the long loading rod 33 to move through the locking arm 331. When the lower end of the swing arm 3913 moves to the lower end of the guide slope 3916 and is in the vertical plane 3917, the upper and lower handle bodies 1 of the long loading rod 33 can move to the lower part of the limit buckle 371, where the locking head 56 is embedded in the locking arm 331, thereby limiting the position of the long loading rod 33 after it moves.

[0068] As the lifting platform 381 continues to move downward, the lower end of the push rod 382 abuts against the plastic sleeve 2 inside the limit buckle 371. After the push rod 382 moves downward, it can be embedded in the limit buckle 371, thus pushing the plastic sleeve 2 downward and assembling it with the handle body 1. The swing arm 3913 moves vertically downward along the vertical plane 3917. At the same time, when the push rod 382 moves downward, the fixing plate 384 moves downward along the guide post 386, causing the return spring 387 to be compressed. After the plastic sleeve 2 inside the limit buckle 371 is assembled with the handle body 1, the bias... The center wheel 390 deflects upward and the return spring 387 elastically recovers. Then, the return spring 387 pushes the push rod 382 upward, so that the next plastic sleeve 2 can be inserted into the empty limit buckle 371. At the same time, the swing arm 3913 also moves upward and disengages from the locking arm 331. Meanwhile, the connecting spring 3915 elastically recovers and pulls the swing arm 3913 to the initial tilt position, so as to wait for the next reciprocating assembly movement. Finally, the continuous locking assembly between multiple handle bodies 1 and plastic sleeves 2 can be completed.

[0069] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A ball valve, comprising a valve body and a handle body (1), characterized in that: It further includes a plastic sleeve (2) sleeved on the end of the handle body (1) and having a "U" - shaped cross - section. The plastic sleeve (2) is made of polytetrafluoroethylene material. On both sides of the plastic sleeve (2), there are integrally provided clamping portions (21) that are pressed against the outer wall of the handle body (1). The clamping portions (21) are inclined towards the inside of the plastic sleeve (2). At the end of the plastic sleeve (2) far from the handle body (1), there is also integrally provided an arc end (22). It further includes the processing technology of this kind of ball valve, which includes the following steps: S1: Stamping - Using a stamping machine to stamp a sheet into a bent handle body (1). S2: Punching - Using a punching machine to punch round holes on the handle body (1). S3: Grinding - Polishing and grinding the handle body (1). S4: Heat treatment - Performing heat treatment on the handle body (1), specifically heating - cooling - first tempering - second tempering - quenching: S5: Electroplating - Electroplating a zinc - nickel alloy coating on the surface of the handle body (1). S6: Assembly - Clamping and assembling the plastic sleeve (2) on the handle body (1) through a continuous clamping device (3). S7: General assembly - Assembling the handle body (1) with the valve body for general assembly. The continuous clamping device (3) includes a workbench (31), a base (32) arranged on the workbench (31), a long - strip loading rod (33) arranged on the base (32), a processing groove (34) opened in the base (32) for the long - strip loading rod (33) to be embedded, a plurality of clamping grooves (35) formed in the long - strip loading rod (33) for the end of the handle body (1) far from the plastic sleeve (2) to be embedded, a bracket (36) arranged on the workbench (31) and on one side of the base (32), a storage box (37) arranged at the upper end of the bracket (36) for storing a plurality of plastic sleeves (2), a driving component (38) arranged on the workbench (31) and used to clamp the plastic sleeve (2) in the storage box (37) down onto the end of the handle body (1). At the upper - end opening of the storage box (37) located above the base (32), there are two "U" - shaped limit buckles (371) arranged up and down for a single plastic sleeve (2) to enter. Inside the storage box (37), there is also a pushing member (4) used to push the plurality of plastic sleeves (2) in the storage box (37) towards the limit buckles (371).

2. A ball valve according to claim 1, characterized in that: The driving component (38) includes a lifting platform (381) arranged above the limit buckle (371), a push rod (382) arranged on the lower side of the lifting platform (381) and the lower end of which is used for being embedded in the limit buckle (371) to push the plastic sleeve (2) downward, a baffle plate (383) arranged on the upper side of the storage box (37) and for the push rod (382) in up-and-down movement to be fitted thereto, a fixing plate (384) arranged at the upper end of the push rod (382), a guiding hole (385) opened on the fixing plate (384), a guiding column (386) arranged on the upper side of the storage box (37) and extending vertically upward and passing through the guiding hole (385), a reset spring (387) sleeved on the guiding column (386) with one end connected to the fixing plate (384) and the other end connected to the storage box (37), a platform (388) arranged at the upper end of the guiding column (386), a driving motor (389) arranged on the platform (388), an eccentric wheel (390) arranged on the output shaft of the driving motor (389) and for abutting against the lifting platform (381), and a linkage member (391) arranged between the base (32) and the lifting platform (381) and for driving the long loading rod (33) to move so that the next handle body (1) moves to the lower side of the limit buckle (371).

3. A ball valve according to claim 2, characterized in that: The linkage member (391) includes a fixed column (3911) arranged at one end of the lifting platform (381) and extending vertically downward, a horizontal arm (3912) arranged at the lower end of the fixed column (3911), a swing arm (3913) with the upper end rotatably connected to the end of the horizontal arm (3912), a mounting plate (3914) arranged on the horizontal arm (3912), a connecting spring (3915) with one end connected to the mounting plate (3914) and the other end connected to the swing arm (3913), a guiding inclined plane (3916) arranged on one side of the base (32) and extending obliquely downward, a vertical plane (3917) arranged on one side of the base (32) and located at the lower end position of the guiding inclined plane (3916), and a clamping arm (331) in a "U" shape and for the swing arm (3913) to be embedded therein is arranged at the side of the long loading rod (33) and at the position of each card slot (35), and both ends of the guiding inclined plane (3916) are respectively located at the positions of adjacent two clamping arms (331).

4. A ball valve according to claim 3, characterized in that: A positioning member (5) for preventing the long loading rod (33) from moving in the reverse direction is further arranged on the workbench (31), and the positioning member (5) includes a mounting column (51) arranged on the workbench (31), a fixed shaft (52) arranged at the upper end of the mounting column (51), a shaft sleeve (53) sleeved on the fixed shaft (52), a reset torsion spring (54) sleeved on the fixed shaft (52) with one end connected to the shaft sleeve (53) and the other end connected to the mounting column (51), a swing rod (55) arranged on the shaft sleeve (53), and a clamping head (56) arranged at the end of the swing rod (55) far away from the shaft sleeve (53) and with a cross section in a right triangle shape, and the hypotenuse of the cross section of the clamping head (56) is located on the side close to the base (32).

5. A ball valve according to claim 1, characterized in that: The processing groove (34) has a guide surface (321) on its side for the handle body (1) to be embedded in the slot (35).

6. A ball valve according to claim 1, characterized in that: The pusher (4) includes a push plate (41) located inside the storage box (37) and pressed against multiple plastic sleeves (2), an elongated hole (42) opened on the lower side of the storage box (37), a boss (43) located at the lower end of the push plate (41) and passing through the elongated hole (42), guide sleeves (44) located on both sides of the boss (43), two guide shafts (45) located on the lower side of the storage box (37) and passing through the two guide sleeves (44) respectively, a fixed platform (46) located at both ends of the guide shaft (45) and connected to the storage box (37), and a mounting spring (47) sleeved on the guide sleeve (44) with one end connected to the guide sleeve (44) and the other end connected to the fixed platform (46).

7. A ball valve according to claim 6, characterized in that: The storage box (37) has a detachable plate (372) on one side. The cross-section of the detachable plate (372) is dovetail-shaped. The storage box (37) has a dovetail groove (373) for inserting the detachable plate (372).

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