Ball valve with compact multi-section telescopic handle

Abstract

The utility model discloses a ball valve with compact multi -section telescopic handle in ball valve technical field, including valve body and handle structure, above -mentioned handle structure includes telescopic structure and locking structure, the rotation of screw rod and under the action of first linear sliding structure and first screw hole, the realization of movement in handle sleeve of outer slide rod, and because outer slide rod and inner slide rod rotation connection, make outer slide rod synchronous drive inner slide rod realize synchronous linear movement, and under the positioning effect of second linear sliding structure, screw rod synchronous drive inner slide rod rotation, and simultaneously under the effect of third linear sliding structure, outer thread and second screw hole, inner slide rod act on sliding sleeve make sliding sleeve realize linear movement in outer slide rod, and when rotating screw rod, inner slide rod, outer slide rod and sliding sleeve synchronous linear movement outward or synchronous linear movement inward, realize the synchronous telescopic effect of multi -section rod body, the whole scheme ensures the compact structure is kept simultaneously, provides enough operating space and torque transmission capacity.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve with a compact, multi-segment retractable handle. Background Technology

[0002] Ball valves, as a common fluid control valve, are widely used in industries such as petroleum, chemical, metallurgy, power, and shipbuilding. Traditional ball valves typically use a fixed-length handle for operation. This design has several limitations in practical applications: First, it restricts operating space. In confined or compact installation environments, a fixed-length handle may not provide sufficient operating space, leading to inconvenience or even inability to operate. Second, it limits operating torque requirements. For large-diameter or high-pressure ball valves, the required operating torque is significant, and a fixed-length handle may not provide sufficient leverage, increasing the difficulty of operation. Third, it restricts installation flexibility. A fixed-length handle limits the installation position and orientation of the ball valve, making it unsuitable for various installation needs. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to improve the problems of limited operating space, poor operating torque and low installation flexibility of the existing ball valve handle.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A ball valve with a compact, multi-stage retractable handle includes a valve body and a handle structure, wherein the handle structure includes a telescopic structure and a locking structure, the locking structure being used to lock the telescopic structure. The telescopic structure includes a handle sleeve connected to the valve body. A lead screw is coaxially rotatably mounted inside the handle sleeve, and the lead screw is equipped with a drive structure. An outer slide rod is mounted outside the lead screw and coaxially within the handle sleeve. A first linear sliding structure is provided between the outer slide rod and the handle sleeve. A first inner hole is coaxially formed on the outer slide rod, and a first threaded hole is provided at the end of the outer slide rod near the lead screw, which is threaded to engage with the lead screw. The inner diameter of the first threaded hole is smaller than the inner diameter of the first inner hole, and the first threaded hole and the first inner hole are connected. Coaxial sliding occurs within the first inner hole. A sliding sleeve is provided, and the sliding sleeve has a third inner hole coaxially. An inner sliding rod is coaxially provided in the first inner hole, and the inner sliding rod is rotatably connected to the outer sliding rod. The inner sliding rod has a second inner hole coaxially, and a second linear sliding structure is provided between the outer wall of the second inner hole and the outer wall of the lead screw. The outer wall of the inner sliding rod is provided with an external thread, and the end of the sliding sleeve near the inner sliding rod is provided with a second threaded hole adapted to the external thread. The second threaded hole communicates with the third inner hole, and the inner diameter of the second threaded hole is smaller than the inner diameter of the third inner hole. A third linear sliding structure is provided between the outer wall of the sliding sleeve and the inner wall of the first inner hole.

[0005] Furthermore, a locking structure is provided between the aforementioned handle sleeve and the aforementioned valve body, the locking structure being used to prevent the handle structure and the valve body from moving or rotating relative to each other.

[0006] Furthermore, the valve body includes a main body and an outwardly extending valve stem, and also includes a handle seat. The handle seat is provided with a first mounting hole and a second mounting hole that are perpendicular to each other. The end of the handle sleeve away from the sliding sleeve is fixedly sleeved in the first mounting hole, and the valve stem is slidably sleeved in the second mounting hole. The outer wall of the valve stem is provided with a plurality of limiting blocks, which are evenly spaced along the circumference of the valve stem, and the central angle between any two adjacent limiting blocks is the same. The inner wall of the second mounting hole is axially provided with a plurality of sliding grooves that correspond one-to-one with the plurality of limiting blocks and slide in cooperation with them.

[0007] Furthermore, the outer wall of the aforementioned handle base is provided with a switch direction indicator.

[0008] Furthermore, the aforementioned handle sleeve and the aforementioned lead screw are connected by a bearing structure.

[0009] Furthermore, the end of the lead screw connected to the handle sleeve is provided with an axial retaining ring, which slides in contact with the end face of the handle sleeve away from the sliding sleeve.

[0010] Furthermore, the aforementioned locking structure includes a slot provided at a preset position on the inner wall of the aforementioned handle sleeve, and an elastic engaging mechanism provided on the outer wall of the aforementioned outer slide rod that engages with the aforementioned slot.

[0011] Furthermore, the aforementioned drive structure includes an internal hexagonal nut coaxially disposed at one end of the lead screw near the valve body, the aforementioned sliding sleeve is hollow, and the end of the aforementioned sliding sleeve away from the valve body is provided with an opening, and a sealing cover is detachably provided at the aforementioned opening, and an adjustable tool is provided inside the aforementioned sliding sleeve, the aforementioned adjusting tool being adapted to the aforementioned internal hexagonal nut.

[0012] Furthermore, both the outer wall of the handle sleeve and the outer wall of the sliding sleeve are provided with an anti-slip and heat-insulating layer.

[0013] Furthermore, the first linear sliding structure, the second linear sliding structure, and the third linear sliding structure mentioned above are all groove-flange sliding structures.

[0014] The beneficial effects of this utility model are: The multi-segment telescopic handle of this invention consists of multiple rod segments. The handle's extension and retraction are achieved through threaded connections, sliding with concave and convex grooves, and self-locking limiting mechanisms. Each rod segment can slide or rotate relative to the others to adjust the total length of the handle. A locking structure is used to fix and limit the handle's extension and retraction length, preventing accidental retraction or extension during operation. This quick adjustment mechanism allows for rapid length adjustment, improving efficiency. It also optimizes operating torque; in situations requiring higher operating torque, extending the handle increases leverage and reduces operational difficulty. The telescopic handle design allows the ball valve to adapt to different installation positions and orientations, no longer limited by fixed-length handles. During on-site adjustment and installation, the handle length and installation direction can be adjusted according to actual conditions, improving installation flexibility and efficiency. The compact design allows the ball valve to retract the handle when not in use, reducing space occupation and improving space utilization. Its compact structure and optimized valve body and handle design ensure sufficient operating space and torque transmission capacity while maintaining a compact structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main cross-section of this utility model; Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is the main view of the lead screw of this utility model; Figure 4 This is a utility model Figure 3 Middle BB section view; Figure 5 This is a front sectional view of the handle sleeve of this utility model; Figure 6 This is a utility model Figure 5 C-section view; Figure 7 This is a front sectional view of the outer sliding rod of this utility model; Figure 8 This is a utility model Figure 7 DD cross-section diagram; Figure 9 This is a front sectional view of the inner slide bar of this utility model; Figure 10 This is a utility model Figure 9 EE cross-section diagram; Figure 11 This is a front sectional view of the sliding sleeve of this utility model; Figure 12 This is a utility model Figure 11 Middle FF cross section; Figure 13This is a schematic diagram of the installation position of the handle base of this utility model; Figure 14 This is a front sectional view of the handle base of this utility model; Figure 15 This is a top view of the handle base of this utility model; Figure 16 This is a schematic diagram of the cross-section of the second mounting hole of this utility model; Figure 17 This is a schematic diagram of the assembly of the adjustment tool of this utility model; The components in the diagram are labeled as follows: 1-valve body, 2-handle sleeve, 3-lead screw, 4-outer slide rod, 5-inner slide rod, 6-slide sleeve, 7-anti-slip heat insulation layer, 8-sealing cover, 9-adjusting tool, 10-internal hex nut, 11-sliding bearing, 12-thrust bearing, 13-axial retaining ring, 14-handle seat, 15-locking pin, 16-padlock, 17-first mounting hole, 18-second mounting hole, 19-pin hole, 20-indicator mark, 21-slide groove, 22-locking structure, 101-body, 102-valve stem. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1-17 As shown in the figure, this application proposes a ball valve with a compact multi-segment telescopic handle, including a valve body 1 and a handle structure. The handle structure includes a telescopic structure and a locking structure 22. The locking structure 22 is used to lock the telescopic structure. The telescopic structure includes a handle sleeve 2 connected to the valve body 1. A lead screw 3 is coaxially and rotatably disposed inside the handle sleeve 2. The lead screw 3 is provided with a driving structure. An outer slide rod 4 is provided outside the lead screw 3. The outer slide rod 4 is coaxially disposed inside the handle sleeve 2. A first linear sliding structure is provided between the outer slide rod 4 and the handle sleeve 2. The outer slide rod 4 is coaxially formed with a first inner hole. The end of the outer slide rod 4 near the lead screw 3 is provided with a first threaded hole that is threaded to the lead screw 3. The inner diameter is smaller than the inner diameter of the first inner hole, and the first threaded hole is connected to the first inner hole; a sliding sleeve 6 is coaxially slidably disposed in the first inner hole, and the sliding sleeve 6 is coaxially provided with a third inner hole; an inner sliding rod 5 is coaxially disposed in the first inner hole, and the inner sliding rod 5 is rotatably connected to the outer sliding rod 4; the inner sliding rod 5 is coaxially provided with a second inner hole, and a second linear sliding structure is provided between the outer wall of the second inner hole and the outer wall of the lead screw 3; the outer wall of the inner sliding rod 5 is provided with an external thread, and the end of the sliding sleeve 6 near the inner sliding rod 5 is provided with a second threaded hole adapted to the external thread, the second threaded hole is connected to the third inner hole and the inner diameter of the second threaded hole is smaller than the inner diameter of the third inner hole; a third linear sliding structure is provided between the outer wall of the sliding sleeve 6 and the inner wall of the first inner hole.

[0018] First, it should be stated that the multi-segment telescopic handle in this utility model is composed of multiple rod segments. The handle's extension and retraction are achieved through threaded connections, sliding with concave and convex grooves, and self-locking limiting mechanisms. Each rod segment can slide or rotate relative to the others to adjust the total length of the handle. Furthermore, the locking structure 22 is used to fix and limit the extension and retraction length of the handle, preventing accidental retraction or extension during operation. This quick adjustment mechanism allows the handle to be adjusted in a short time, improving efficiency. It also optimizes the operating torque; in situations requiring greater operating torque, extending the handle length increases leverage, reducing operational difficulty. The telescopic handle design allows the ball valve to adapt to different installation positions and directions, no longer limited by fixed-length handles. During on-site adjustment and installation, the handle length and installation direction can be adjusted according to the actual site conditions, improving installation flexibility and efficiency. The compact design, through its telescopic design, allows the ball valve to retract the handle when not in use, reducing space occupation and improving space utilization efficiency. Its compact structure optimizes the structural design of the valve body 1 and the handle, ensuring sufficient operating space and torque transmission capacity while maintaining a compact structure.

[0019] During operation, the aforementioned lead screw 3 is rotated by the drive structure. With the rotation of the lead screw 3 and the action of the first linear sliding structure and the first screw hole, the outer slide rod 4 moves within the handle sleeve 2. Since the outer slide rod 4 and the inner slide rod 5 are rotatably connected, the outer slide rod 4 synchronously drives the inner slide rod 5 to achieve synchronous linear movement. Furthermore, under the positioning action of the second linear sliding structure, the lead screw 3 synchronously drives the inner slide rod 5 to rotate. Simultaneously, under the action of the third linear sliding structure, the external thread, and the second screw hole, the inner slide rod 5 acts on the sliding sleeve 6, causing the sliding sleeve 6 to move linearly within the outer slide rod 4. Moreover, when the lead screw 3 is rotated, the inner slide rod 5, the outer slide rod 4, and the sliding sleeve 6 move synchronously outward or inward in a linear fashion, achieving synchronous extension and retraction of the multiple rod segments. When the extension or retraction reaches a preset position or limit position, the locking structure 22 locks the extension and retraction structure, improving stability.

[0020] The rotation structure between the inner slide bar 5 and the outer slide bar 4 is achieved by the relative sliding of the annular groove and the annular protrusion, and the surfaces of the annular groove and the annular protrusion are compatible arc surfaces, which improves the rotation efficiency.

[0021] The first, second, and third linear sliding structures described above are all groove-flange sliding structures, which can improve the stability of directional linear sliding through this sliding fit structure.

[0022] Specifically, the aforementioned handle sleeve 2 and the aforementioned lead screw 3 are connected by a bearing structure, which reduces the friction between the rotation of the lead screw 3 and the handle sleeve 2, reduces the probability of wear, and improves the rotation efficiency of the lead screw 3. In this embodiment, the bearing structure includes two types of bearing structures: one is a sliding bearing 11, which is set between the outer wall of one side of the lead screw 3 and the inner wall of the corresponding position of the handle sleeve 2. When the lead screw 3 rotates, the rolling bearing plays a role in reducing friction; the other is a thrust bearing 12, which further reduces the friction generated while ensuring that the lead screw 3 does not displace relative to the handle sleeve 2 during rotation. Moreover, the end of the lead screw 3 connected to the handle sleeve 2 is provided with an axial retaining ring 13, which slides in contact with the end face of the handle sleeve 2 away from the sliding sleeve 6, further improving the connection stability of the lead screw 3.

[0023] The locking structure 22 includes a slot provided at a preset position on the inner wall of the handle sleeve 2, and an elastic locking mechanism provided on the outer wall of the outer slide rod 4 to engage with the slot. In this embodiment, it is a spring + ball locking structure. The slot is provided at a preset position on the inner wall of the handle sleeve 2, so that the outer slide rod 4 can slide in this inner cavity after being inserted. The slot is provided with a self-locking spring hole. When the outer slide rod 4 slides to the preset limit position, it is self-locked by the self-locking spring and the ball and cannot continue to slide.

[0024] The aforementioned drive structure includes an internal hexagonal nut 10 coaxially mounted on the lead screw 3 near the valve body 1. The sliding sleeve 6 is hollow, with an opening at the end of the sliding sleeve 6 away from the valve body 1. A sealing cover 8 is detachably mounted at the opening. An adjustable tool 9 is installed inside the sliding sleeve 6, and the adjustable tool 9 is adapted to the internal hexagonal nut 10. The adjustable tool 9 is connected to the sealing cover 8 via a connecting rope to prevent loss of the tool. The adjustable tool 9 specifically includes a foldable or detachable internal hexagonal screwdriver with a handle.

[0025] To prevent slippage or burns when operating the handle, both the outer wall of the handle sleeve 2 and the outer wall of the sliding sleeve 6 are provided with an anti-slip and heat-insulating layer 7.

[0026] A locking structure is provided between the aforementioned handle sleeve 2 and the aforementioned valve body 1. The locking structure is used to prevent the handle structure and the valve body 1 from moving or rotating relative to each other. Specifically, the locking structure can be a pin key structure set between the handle sleeve 2 and the valve body 1, which locks the relative position of the handle sleeve 2 and the aforementioned valve body 1 by means of a pin. Furthermore, in this embodiment, corresponding pin holes 19 are provided on the handle sleeve 2 and the valve body 1, and the locking pin 15 is inserted into the two pin holes 19 in sequence. The locking pin 15 and the valve body 1 are locked by a padlock 16 to achieve the locking operation. When the valve operating handle is in the open or closed position, the locking pin 15 can be inserted into the two pin holes 19, so that the locking beam of the padlock 16 passes through the locking hole on the locking pin 15 and the locking hole of the valve body 1, and the locking beam is pressed into the locking hole to lock it. This can effectively prevent the valve from being operated by mistake. Moreover, the padlock 16 can be removed when not needed.

[0027] The valve body 1 includes a main body 101 and an outwardly extending valve stem 102, and also includes a handle seat 14. The handle seat 14 is provided with a first mounting hole 17 and a second mounting hole 18 that are perpendicular to each other. The end of the handle sleeve 2 away from the sliding sleeve 6 is fixedly sleeved in the first mounting hole 17. The valve stem 102 is slidably sleeved in the second mounting hole 18. The outer wall of the valve stem 102 is provided with a plurality of limiting blocks. The plurality of limiting blocks are evenly spaced along the circumference of the valve stem 102, and the central angle between any two adjacent limiting blocks is the same. The inner wall of the second mounting hole 18 is axially provided with a plurality of sliding grooves 21 that correspond one-to-one with the plurality of limiting blocks and are slidably engaged.

[0028] The first mounting hole 17 and the handle sleeve 2 are fixedly engaged by a bolt or pin structure. The interface profile of the second mounting hole 18 can be a regular polygon, adapted to the interface profile of the valve stem 102, ensuring sufficient torque reliability. Furthermore, multiple limiting blocks are evenly spaced along the circumference of the valve stem 102. The interaction between the limiting blocks and the sliding groove 21 further enhances the stability of the torque transmission of the entire handle. The valve position can be interchanged in multiple operating directions by removing the handle, allowing for selection of any position to open and close the valve, thus improving the overall flexibility of the structure. Additionally, the outer wall of the handle seat 14 is equipped with a switch direction indicator 20, enhancing safety during use.

[0029] In summary, this utility model proposes a ball valve with a compact multi-segment retractable handle, which has the following advantages: simple and reliable structure, using a simple mechanical structure to achieve handle extension and retraction, reducing manufacturing costs and maintenance difficulty; convenient operation, the extension and retraction of the handle can be achieved by manual rotation, without the need for complex electric devices or hydraulic systems; low cost, due to the simple structure, the manufacturing cost is low, which can reduce product price and improve market competitiveness. Flexible installation: The retractable handle design allows the ball valve to adapt to different installation positions and orientations, improving installation flexibility. High versatility: By adjusting the handle length, it can adapt to different operating spaces and torque requirements, enhancing the ball valve's versatility. Improved user experience: It can be adjusted according to user operating habits and needs, improving operational comfort and convenience. High safety: In situations requiring frequent operation, the retractable handle reduces operator fatigue and improves operational safety. The compact, multi-stage retractable handle ball valve is suitable for fluid control applications in industries such as petroleum, chemical, metallurgy, power, and shipbuilding. It is particularly suitable for the following scenarios: confined or compact installation environments, such as areas with dense piping or equipment interiors with limited space; applications requiring high operating torque, such as large-diameter or high-pressure pipeline systems; and applications requiring flexible installation, such as those requiring adjustment of the installation position and orientation according to actual site conditions. In situations requiring frequent operation, such as processes that require frequent valve switching, this utility model's compact multi-stage telescopic handle ball valve, through the above technical solutions and specific implementation methods, can effectively solve the limitations of traditional ball valves in terms of operating space, operating torque, and installation flexibility, providing a fluid control solution that is simple in structure, easy to operate, low in cost, and highly versatile.

Claims

1. A ball valve with a compact, multi-stage retractable handle, comprising a valve body (1) and a handle structure, characterized in that, The handle structure includes a telescopic structure and a locking structure (22), wherein the locking structure (22) is used to lock the telescopic structure; The telescopic structure includes a handle sleeve (2) connected to the valve body (1), a lead screw (3) is coaxially rotatably disposed inside the handle sleeve (2), and the lead screw (3) is provided with a driving structure; an outer slide rod (4) is disposed outside the lead screw (3), the outer slide rod (4) is coaxially disposed inside the handle sleeve (2), and a first linear sliding structure is provided between the outer slide rod (4) and the handle sleeve (2); and the outer slide rod (4) is coaxially provided with a first inner hole, and the end of the outer slide rod (4) near the lead screw (3) is provided with a first threaded hole that is threaded with the lead screw (3), the inner diameter of the first threaded hole is smaller than the inner diameter of the first inner hole, and the first threaded hole and the first inner hole are connected; the first inner hole... A sliding sleeve (6) is coaxially slidably disposed inside the hole, and the sliding sleeve (6) is coaxially provided with a third inner hole; an inner sliding rod (5) is coaxially disposed in the first inner hole, and the inner sliding rod (5) is rotatably connected to the outer sliding rod (4); the inner sliding rod (5) is coaxially provided with a second inner hole, and a second linear sliding structure is provided between the outer wall of the second inner hole and the outer wall of the lead screw (3); the outer wall of the inner sliding rod (5) is provided with an external thread, and the end of the sliding sleeve (6) near the inner sliding rod (5) is provided with a second threaded hole adapted to the external thread, the second threaded hole is connected to the third inner hole and the inner diameter of the second threaded hole is smaller than the inner diameter of the third inner hole; a third linear sliding structure is provided between the outer wall of the sliding sleeve (6) and the inner wall of the first inner hole.

2. The ball valve with a compact, multi-stage retractable handle according to claim 1, characterized in that, A locking structure is provided between the handle sleeve (2) and the valve body (1), which prevents the handle structure and the valve body (1) from moving or rotating relative to each other.

3. The ball valve with a compact, multi-stage retractable handle according to claim 1, characterized in that, The valve body (1) includes a main body (101) and an outwardly extending valve stem (102), and also includes a handle seat (14). The handle seat (14) is provided with a first mounting hole (17) and a second mounting hole (18) that are perpendicular to each other. The end of the handle sleeve (2) away from the sliding sleeve (6) is fixedly sleeved in the first mounting hole (17). The valve stem (102) is slidably sleeved in the second mounting hole (18). The outer wall of the valve stem (102) is provided with a plurality of limiting blocks. The plurality of limiting blocks are evenly spaced along the circumference of the valve stem (102), and the central angle between any two adjacent limiting blocks is the same. The inner wall of the second mounting hole (18) is axially provided with a plurality of sliding grooves (21) that correspond one-to-one with the plurality of limiting blocks and are slidably engaged.

4. The ball valve with a compact, multi-segment retractable handle according to claim 3, characterized in that, The outer wall of the handle base (14) is provided with a switch direction indicator (20).

5. The ball valve with a compact, multi-segment retractable handle according to claim 1, characterized in that, The handle sleeve (2) and the lead screw (3) are connected by a bearing structure.

6. The ball valve with a compact, multi-stage retractable handle according to claim 1, characterized in that, The end of the lead screw (3) connected to the handle sleeve (2) is provided with an axial retaining ring (13), which slides in contact with the end face of the handle sleeve (2) away from the sliding sleeve (6).

7. The ball valve with a compact, multi-stage retractable handle according to claim 1, characterized in that, The locking structure (22) includes a slot provided at a preset position on the inner wall of the handle sleeve (2), and an elastic locking mechanism provided on the outer wall of the outer slide rod (4) to engage with the slot.

8. The ball valve with a compact, multi-stage retractable handle according to claim 1, characterized in that, The drive structure includes an internal hexagonal nut (10) coaxially disposed on the end of the lead screw (3) near the valve body (1), the sliding sleeve (6) is hollow, and the end of the sliding sleeve (6) away from the valve body (1) is provided with an opening, and a sealing cover (8) is detachably provided at the opening. An adjustable tool (9) that can be pulled out is provided inside the sliding sleeve (6), and the adjustable tool (9) is adapted to the internal hexagonal nut (10).

9. The ball valve with a compact, multi-stage retractable handle according to claim 1, characterized in that, The outer wall of the handle sleeve (2) and the outer wall of the sliding sleeve (6) are both provided with an anti-slip and heat-insulating layer (7).

10. The ball valve with a compact, multi-stage retractable handle according to claim 1, characterized in that, The first linear sliding structure, the second linear sliding structure, and the third linear sliding structure are all groove-flange sliding structures.

Images