A valve core and valve stem assembly device

Abstract

The utility model relates to valve door assembly technical field especially is valve core valve rod assembly device, including base, the left side fixedly connected with drive arrangement in base top, the right side fixedly connected with protection device in base top, the side that protection device and drive arrangement are close to base center position all are fixedly connected with fixed device, the outside swing joint of fixed device has the rotary drum, the inside screw thread connection of rotary drum has screw rod. The utility model discloses through being equipped with protection device, is favorable to overcome the machining error guaranteeing the stability that valve core and valve rod are connected, and the valve core and valve rod can relatively rotate and be screwed down under the action of friction force when screwing down and fixing, and the friction between friction ring and friction disc is overcome after screwing down and fixing screwing down torque, so that the valve core and valve rod can rotate synchronously, prevent the over-rotation phenomenon from happening, protect the valve core and valve rod from being damaged, and need not accurate control rotation number, improve the assembly efficiency and quality stability.

Description

Technical Field

[0001] This utility model relates to the field of valve assembly technology, and in particular to a valve core and valve stem assembly device. Background Technology

[0002] The valve core and valve stem of a control valve are two key components that work together to achieve the core function of the control valve. The valve core is the actuator of the control valve and is directly responsible for regulating the flow area of ​​the fluid. The valve stem is the power transmission component of the control valve and is used to transmit external force to the valve core. In the manufacturing process of the control valve, the valve core and valve stem are usually connected by threads, and an assembly device is required for the connection.

[0003] Existing valve core and stem assembly devices generally control the connection quality by setting a fixed number of rotations. However, due to variations in part machining errors, the fixed number of rotations is difficult to adapt to all situations, and there is still a risk of unstable or overly tight connections. Therefore, a valve core and stem assembly device is provided. Summary of the Invention

[0004] In view of this, the present invention provides a valve core and valve stem assembly device, the main technical problem to be solved is: the connection between the valve core and valve stem is prone to instability and excessive tightness due to changes in the machining error of the parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a valve core and valve stem assembly device, comprising a base, a driving device fixedly connected to the left side of the top of the base, a protective device fixedly connected to the right side of the top of the base, a fixing device fixedly connected to both the protective device and the driving device on the side near the center of the base, a rotating cylinder movably connected to the outside of the fixing device, a screw threadedly connected to the inside of the rotating cylinder, the protective device comprising an outer cylinder fixedly connected to the right side of the top of the base, a connecting column movably connected to the inside of the outer cylinder, a friction disc fixedly connected to the right side of the connecting column, a fixing cylinder fixedly connected to the left side of the inside of the connecting column, a telescopic column movably connected to the inside of the fixing cylinder, a second spring fixedly connected between the fixing cylinder and the telescopic column, and a friction ring fixedly connected to the right side of the telescopic column.

[0006] As a further description of the above technical solution: the base includes a seat body, a guide rod is fixedly connected inside the seat body, a movable column is movably connected to the outside of the guide rod, and a first spring is fixedly connected between the seat body and the movable column.

[0007] As a further description of the above technical solution: the driving device includes a support column fixedly connected to the top left side of the base, a motor fixedly connected to the top of the support column, and a drive shaft fixedly connected to the output end of the motor.

[0008] As a further description of the above technical solution: the rotating drum includes a cylinder body movably connected to the outside of the fixed device, the inner side of the cylinder body is provided with a rotating groove, and an internal gear is fixedly connected to the inner side of the cylinder body.

[0009] As a further description of the above technical solution: the screw includes a rod body threadedly connected inside the rotating drum, a screw block is fixedly connected to the outer end of the rod body, and an anti-slip block is fixedly connected to the inner end of the rod body.

[0010] As a further description of the above technical solution: the fixing device includes a housing fixedly connected to the connecting column and the drive device on the side near the center of the base. An inner cylinder is fixedly connected to the inner side of the housing, and a fixing ring is fixedly connected to the outer side of the housing. A rotating column is movably connected inside the housing. A driven gear and a first bevel gear are fixedly connected to the outer side of the rotating column. A fixing frame is fixedly connected inside the housing. A stud is movably connected inside the fixing frame. A second bevel gear is fixedly connected to the end of the stud near the first bevel gear. A fixing column is threadedly connected to the outer side of the stud. An anti-slip pad is fixedly connected to the outer end of the fixing column.

[0011] By employing the above technical solution, the valve core and valve stem assembly device of this utility model has at least the following beneficial effects: Compared with existing technologies, this valve core and stem assembly device, by incorporating a protective device, helps overcome processing errors and ensures the stability of the connection between the valve core and stem. During tightening, the friction between the friction ring and the friction disc is increased under the action of the second spring, preventing the right-side fixing device from rotating. This allows the valve core and stem to rotate relative to each other for tightening. When the tightening torque overcomes the friction between the friction ring and the friction disc, relative sliding occurs between them, allowing the two fixing devices to rotate synchronously. This, in turn, allows the valve core and stem to rotate synchronously, preventing over-tightening and protecting the valve core and stem from damage. Furthermore, it eliminates the need for precise control of the number of rotations, improving assembly efficiency and quality stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a valve core and valve stem assembly device proposed in this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the rotating cylinder of the valve core and valve stem assembly device proposed in this utility model; Figure 3 This is a cross-sectional structural diagram of the fixing device of the valve core and valve stem assembly device proposed in this utility model; Figure 4 This is a cross-sectional structural diagram of the protective device for a valve core and valve stem assembly device proposed in this utility model.

[0013] Legend: 1. Base; 101. Seat body; 102. First spring; 103. Guide rod; 104. Moving column; 2. Drive device; 201. Support column; 202. Drive shaft; 203. Motor; 3. Rotary drum; 301. Cylinder body; 302. Rotary groove; 303. Internal gear; 4. Screw; 401. Tightening block; 402. Rod body; 403. Anti-slip block; 5. Fixing device; 501. Outer shell; 502. Inner... 503. Cylinder; 504. Fixing ring; 505. Rotating column; 506. Fixing frame; 507. Driven gear; 508. Anti-slip pad; 509. Fixing column; 510. Stud; 511. First bevel gear; 512. Second bevel gear; 6. Protective device; 601. Connecting column; 602. Outer cylinder; 603. Fixing cylinder; 604. Telescopic column; 605. Friction ring; 606. Friction disc; 607. Second spring. Detailed Implementation

[0014] Reference Figure 1-4This utility model provides a valve core and valve stem assembly device, comprising a base 1, a driving device 2 fixedly connected to the left side of the top of the base 1, a protective device 6 fixedly connected to the right side of the top of the base 1, and fixing devices 5 fixedly connected to both the protective device 6 and the driving device 2 near the center of the base 1. A rotating cylinder 3 is movably connected to the outside of the fixing device 5, and a screw 4 is threadedly connected to the inside of the rotating cylinder 3. The protective device 6 includes an outer cylinder 602 fixedly connected to the right side of the top of the base 1, a connecting post 601 movably connected inside the outer cylinder 602, a friction disc 606 fixedly connected to the right side of the connecting post 601, the connecting post 601 being rotatable inside the outer cylinder 602, and a fixing cylinder 603 fixedly connected to the left side of the inside of the connecting post 601. The internal movable connection of the 3 is a telescopic column 604, which can move inside the fixed cylinder 603. A second spring 607 is fixedly connected between the fixed cylinder 603 and the telescopic column 604. The second spring 607 is in a compressed state. A friction ring 605 is fixedly connected to the right side of the telescopic column 604. Under the action of the second spring 607, the friction ring 605 can fit against the friction disc 606. In use, the valve core and valve stem are fixed to the two fixed devices 5 respectively. By moving the movable column 104, the movable column 104 can move to the right inside the seat 101. This movement causes the movable column 104 to drive the protection device 6 to move to the right, thereby separating the right fixed device 5 from the left fixed device 5, allowing the valve to... The valve core and valve stem can be placed in the inner cylinders 502 on both sides respectively. Rotating the cylinder 301 causes the internal gear 303 to rotate, meshing with the driven gear 506. The first bevel gear 510 meshes with the second bevel gear 511. The rotation of the internal gear 303 causes the driven gear 506 to rotate, which in turn drives the rotating column 504, causing the first bevel gear 510 to rotate, which in turn drives the second bevel gear 511, causing the stud 509 to rotate. The rotation of the stud 509, and its forward or reverse rotation, causes the fixing column 508 to move back and forth, allowing the anti-slip pad 507 to press against the outside of the valve core or valve stem for fixation. Finally, tightening the screw 4 secures the cylinder 301. After releasing the moving column 104, the first spring 102 causes the moving column 104 to move to the left, allowing the valve core and valve stem fixed in the fixing device 5 to approach and contact each other. The motor 203 is then started, causing the drive shaft 202 to rotate the left-side fixing device 5. Under the action of the second spring 607, the telescopic column 604 causes the friction ring 605 to firmly press against the friction disc 606, increasing the friction between the friction ring 605 and the friction disc 606. This prevents the connecting column 601 from rotating relative to the outer cylinder 602, thus preventing the right-side fixing device 5 from rotating. This allows the valve core and valve stem to rotate relative to each other for tightening. Once the tightening torque overcomes the friction between the friction ring 605 and the friction disc 606...The friction ring 605 and the friction disc 606 slide relative to each other, allowing the two fixed devices 5 to rotate synchronously. This, in turn, enables the valve core and valve stem to rotate synchronously, preventing over-rotation, protecting the valve core and valve stem from damage, and eliminating the need for precise control of the number of rotations, thus improving assembly efficiency and quality stability.

[0015] Furthermore, the base 1 includes a seat body 101, a guide rod 103 is fixedly connected inside the seat body 101, and a movable column 104 is movably connected to the outside of the guide rod 103. The movable column 104 can move outside the guide rod 103. A first spring 102 is fixedly connected between the seat body 101 and the movable column 104. The first spring 102 is in a compressed state. Under the action of the first spring 102, the valve core and valve stem fixed in the fixing device 5 can contact each other and move synchronously with the rotation of the valve core or valve stem.

[0016] Furthermore, the drive device 2 includes a support column 201 fixedly connected to the top left side of the base 1. A motor 203 is fixedly connected to the top of the support column 201. A drive shaft 202 is fixedly connected to the output end of the motor 203. The drive shaft 202 is fixedly connected to the housing 501 on the left fixed device 5. By starting the motor 203, the drive shaft 202 can drive the housing 501 on the left fixed device 5 to rotate.

[0017] Furthermore, the rotating drum 3 includes a cylinder 301 movably connected to the outside of the fixed device 5. The inner side of the cylinder 301 is provided with a rotating groove 302 for the cylinder 301 to rotate outside the fixed ring 503. An internal gear 303 is fixedly connected to the inner side of the cylinder 301, and the internal gear 303 meshes with the driven gear 506.

[0018] Furthermore, the screw 4 includes a rod 402 threadedly connected inside the rotating cylinder 3. A screw block 401 is fixedly connected to the outer end of the rod 402, and an anti-slip block 403 is fixedly connected to the inner end of the rod 402. The anti-slip block 403 is made of rubber. By screwing the screw block 401, the rod 402 can rotate. By rotating the rod 402 forward or backward, the rod 402 can move towards or away from the center of the cylinder 301. This allows the anti-slip block 403 to move towards the center of the cylinder 301, pressing the anti-slip block 403 onto the outer shell 501, thus fixing the cylinder 301 and ensuring the stability of the valve core and valve stem.

[0019] Furthermore, the fixing device 5 includes a housing 501 fixedly connected to the connecting column 601 and the drive device 2 near the center of the base 1. An inner cylinder 502 is fixedly connected to the inner side of the housing 501, and a fixing ring 503 is fixedly connected to the outer side of the housing 501. A rotating column 504 is movably connected inside the housing 501 and can rotate inside the housing 501. A driven gear 506 and a first bevel gear 510 are fixedly connected to the outer side of the rotating column 504, and a fixing frame is fixedly connected inside the housing 501. 505, a stud 509 is movably connected inside the fixing frame 505. The stud 509 can rotate inside the fixing frame 505. A second bevel gear 511 is fixedly connected to one end of the stud 509 near the first bevel gear 510. A fixing post 508 is threadedly connected to the outside of the stud 509. An anti-slip pad 507 is fixedly connected to the outer end of the fixing post 508. The fixing post 508 can move inside the inner cylinder 502. The anti-slip pad 507 is made of rubber and has a good anti-slip effect, which helps to ensure the stability of the fixing.

[0020] Working principle: During use, the valve core and valve stem are fixed to the two fixing devices 5 respectively. By moving the movable column 104, the movable column 104 can move to the right inside the seat 101. This movement causes the movable column 104 to move the protection device 6 to the right, thereby separating the right fixing device 5 from the left fixing device 5. This allows the valve core and valve stem to be placed in the inner cylinders 502 on both sides respectively. By rotating the cylinder 301, the internal gear 303 can rotate. The internal gear 303 and the driven gear 502... The six-phase meshing mechanism consists of the first bevel gear 510 and the second bevel gear 511. The rotation of the internal gear 303 causes the driven gear 506 to rotate, which in turn drives the rotating column 504, causing the first bevel gear 510 to rotate. This, in turn, drives the second bevel gear 511, causing the stud 509 to rotate. The rotation of the stud 509, and its forward or reverse rotation, allows the fixed column 508 to move back and forth, thus allowing the anti-slip pad 507 to press against the outside of the valve core or valve stem for fixation. Finally, tightening the screw 4 secures the cylinder 30... 1. Once fixed in place, the moving column 104 is released. Under the action of the first spring 102, the moving column 104 can move to the left, allowing the valve core and valve stem fixed in the fixing device 5 to approach and contact each other. The motor 203 is started, causing the drive shaft 202 to drive the left fixing device 5 to rotate. Under the action of the second spring 607, the telescopic column 604 can drive the friction ring 605 to firmly press against the friction disc 606, increasing the friction between the friction ring 605 and the friction disc 606, thereby making the connecting column 601 free from friction. The valve core and valve stem rotate relative to the outer cylinder 602, thereby preventing the right-side fixing device 5 from rotating. This allows the valve core and valve stem to rotate relative to each other and be tightened. When the tightening torque overcomes the friction between the friction ring 605 and the friction disc 606, relative sliding occurs between the friction ring 605 and the friction disc 606, allowing the two fixing devices 5 to rotate synchronously. This, in turn, allows the valve core and valve stem to rotate synchronously, preventing over-rotation and protecting the valve core and valve stem from damage. Furthermore, it eliminates the need for precise control of the number of rotations, improving assembly efficiency and quality stability.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve core and valve stem assembly device, comprising a base (1), characterized in that: A drive device (2) is fixedly connected to the left side of the top of the base (1), and a protection device (6) is fixedly connected to the right side of the top of the base (1). Both the protection device (6) and the drive device (2) are fixedly connected to a fixing device (5) on the side near the center of the base (1). A rotating cylinder (3) is movably connected to the outside of the fixing device (5). A screw (4) is threaded inside the rotating cylinder (3). The protection device (6) includes an outer cylinder (602) fixedly connected to the right side of the top of the base (1). A connecting column (601) is movably connected inside the outer cylinder (602). A friction disc (606) is fixedly connected to the right side of the connecting column (601). A fixing cylinder (603) is fixedly connected to the left side inside the connecting column (601). A telescopic column (604) is movably connected inside the fixing cylinder (603). A second spring (607) is fixedly connected between the fixing cylinder (603) and the telescopic column (604). A friction ring (605) is fixedly connected to the right side of the telescopic column (604).

2. The valve core and valve stem assembly device according to claim 1, characterized in that: The base (1) includes a seat body (101), a guide rod (103) is fixedly connected inside the seat body (101), a movable column (104) is movably connected to the outside of the guide rod (103), and a first spring (102) is fixedly connected between the seat body (101) and the movable column (104).

3. The valve core and valve stem assembly device according to claim 1, characterized in that: The drive device (2) includes a support column (201) fixedly connected to the top left side of the base (1), a motor (203) fixedly connected to the top of the support column (201), and a drive shaft (202) fixedly connected to the output end of the motor (203).

4. The valve core and valve stem assembly device according to claim 1, characterized in that: The rotating drum (3) includes a cylinder (301) movably connected to the outside of the fixing device (5), a rotating groove (302) is provided on the inner side of the cylinder (301), and an internal gear (303) is fixedly connected to the inner side of the cylinder (301).

5. The valve core and valve stem assembly device according to claim 1, characterized in that: The screw (4) includes a rod (402) threaded inside the rotating drum (3), with a screw block (401) fixedly connected to the outer end of the rod (402) and an anti-slip block (403) fixedly connected to the inner end of the rod (402).

6. The valve core and valve stem assembly device according to claim 1, characterized in that: The fixing device (5) includes a housing (501) fixedly connected to the connecting column (601) and the drive device (2) on the side near the center of the base (1). An inner cylinder (502) is fixedly connected to the inner side of the housing (501), and a fixing ring (503) is fixedly connected to the outer side of the housing (501). A rotating column (504) is movably connected inside the housing (501). A driven gear (506) and a first bevel gear (510) are fixedly connected to the outer side of the rotating column (504). A fixing frame (505) is fixedly connected inside the housing (501). A stud (509) is movably connected inside the fixing frame (505). A second bevel gear (511) is fixedly connected to one end of the stud (509) near the first bevel gear (510). A fixing column (508) is threadedly connected to the outer side of the stud (509). An anti-slip pad (507) is fixedly connected to the outer end of the fixing column (508).

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