A lock-type detachable copper gate valve

Abstract

The present invention relates to a lock-type detachable copper gate valve, comprising a gate valve body, a first valve cover arranged on the upper side of the gate valve body, a water inlet channel and a water outlet channel opened in the gate valve body, and a valve plate which can be lifted up and down and is arranged between the water inlet channel and the water outlet channel. A first valve stem for driving the valve plate to be lifted up and down is rotatably arranged on the gate valve body, the lower end of the first valve stem is threadedly connected to the valve plate, the upper end of the first valve stem upwardly passes through the first valve cover, and the first valve cover is provided with an encryption device for preventing non-staff from operating the first valve stem to rotate and causing the valve plate to open and close.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a lock-type detachable copper gate valve. Background Art

[0002] The gate valve's opening and closing parts are the gate disc, and the direction of movement of the gate disc is perpendicular to the direction of the fluid. The gate valve can only be fully opened or fully closed, and cannot be adjusted or throttled. The valve stem nut is set on the gate disc, and the handwheel rotates to drive the valve stem to rotate, causing the gate disc to rise. This valve is called a rotating stem gate valve, or a concealed stem gate valve.

[0003] The handwheels of gate valves currently on the market are easily operated by non-staff, which can cause the gate valves to be opened and closed at will. This poses a safety hazard to a certain extent, especially in public places. Random operation by non-staff can easily cause waste of public resources and is not conducive to the management of public resources. Summary of the invention

[0004] Therefore, in view of the above problems, the present invention provides a lockable and detachable copper gate valve.

[0005] In order to solve the above technical problems, the solution adopted by the present invention is a lock-type detachable copper gate valve, including a gate valve body, a first valve cover arranged on the upper side of the gate valve body, an inlet channel and an outlet channel opened in the gate valve body, and a valve plate that can be lifted up and down and arranged between the inlet channel and the outlet channel. A first valve stem for driving the valve plate to be lifted up and down is rotatably arranged on the gate valve body, the lower end of the first valve stem is threadedly connected to the valve plate, and the upper end of the first valve stem upwardly passes through the first valve cover, and the first valve cover is provided with an encryption device for preventing non-staff from operating the first valve stem to rotate and causing the valve plate to open and close, and the encryption device includes: a second valve cover is detachably provided on the first valve cover The upper end of the first valve cover is provided with a receiving groove for cooperating with the second valve cover to form an accommodating cavity, the upper end of the first valve stem is located in the accommodating cavity, the second valve cover is rotatably provided with a second valve stem, the upper end of the second valve stem passes through the second valve cover and is connected to a handwheel, the lower end of the second valve stem is aligned and arranged above the upper end of the first valve stem, the lower end of the second valve stem can be lifted up and down and is provided with a rotating transmission member for cooperating with the first valve stem, the rotating transmission member cooperates with the upper end of the first valve stem after descending to a predetermined position and drives the first valve stem to rotate when the second valve stem rotates, and a control device for controlling the lifting and lowering of the rotating transmission member is provided between the first valve cover and the second valve cover.

[0006] A further improvement is that the control device includes a lifting member that can be lifted up and down and is arranged in the accommodating chamber to drive the rotating transmission member to lift up and down, a rotating member that can be rotatably sleeved on the second valve stem and is located in the accommodating chamber to cooperate with the lifting member to drive the lifting member to lift up and down, and an operating lever that can be detachably arranged on the rotating member for a user to operate to drive the rotating member to rotate.

[0007] Further improvements are: a mounting groove for accommodating the lower end of the second valve stem is provided at the upper end of the rotating transmission member, a first limiting protrusion is provided on the rotating transmission member in the mounting groove, and a first limiting groove is provided at the lower end of the second valve stem for the first limiting protrusion to slide up and down and limit the relative rotation between the rotating transmission member and the second valve stem.

[0008] A further improvement is that: the upper end of the first valve stem and the lower end of the rotating transmission member are provided with a transmission groove and a transmission protrusion which cooperate with each other when the rotating transmission member slides downward to a predetermined position.

[0009] A further improvement is that a transmission boss is provided at the upper end of the rotating transmission member, the lifting member is two semi-cylindrical lifting platforms that complement each other to form a cylinder, the lifting platform is provided with an accommodating groove that can accommodate the transmission boss so as to push against the transmission boss when the lifting platform is lifted and lowered to drive the transmission boss to move up and down, and the lifting platform and the transmission member can rotate relative to each other.

[0010] A further improvement is that a lifting groove is provided on the lower side of the rotating part for the lifting part to move up and down, the rotating part is provided with an internal thread at the lifting groove, and the lifting part is provided with an external thread matching the internal thread for driving the lifting part to move up and down when the rotating part rotates.

[0011] Further improvements are: the upper end of the lifting member is located in the lifting groove and cooperates with the side wall of the lifting groove, the lower end of the lifting member is located in the accommodating groove and resists the side wall of the accommodating groove, the first valve cover is located in the accommodating groove and is provided with a second limiting protrusion / second limiting groove, and the side wall of the lifting member is provided with a second limiting groove / second limiting protrusion that cooperates with the second limiting protrusion / second limiting groove to allow the lifting member to slide up and down in the accommodating groove and limit the rotation of the lifting member.

[0012] A further improvement is that a rotation groove is opened at the upper end of the rotating member, a rotation boss is arranged on the second valve stem, the rotation boss is located in the rotation groove, a first sealing member is arranged in the rotation groove on the upper side of the rotation boss, and the first sealing member is sleeved on the second valve stem.

[0013] A further improvement is that a plurality of mounting holes are evenly arranged on the side wall of the rotating part, one end of the operating rod can be inserted into the mounting hole and the other end can be operated by a user to drive the rotating part to rotate, and a rotating channel is arranged on the side wall of the second valve cover for the operating rod to penetrate into and drive the rotating part to rotate a certain angle.

[0014] A further improvement is that a chain is provided at one end of the operating rod, and the other end of the chain is connected to the first valve cover / the second valve cover.

[0015] By adopting the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: in the present invention, the gate valve is not only simple in structure and good in stability, but also the opening of the gate valve is controlled by the operating lever, which can prevent non-staff from opening the gate valve, which is beneficial to public management and production applications, and reduces resource waste and production losses.

[0016] A further effect is that in the present invention, the second valve cover cooperates with a rotation channel, through which the operating rod can pass, and the operating rod can drive the rotating member to rotate a certain angle, so the structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Is a schematic diagram of the gate valve body structure of the present invention embodiment;

[0018] Figure 2 Schematic diagram of the gate valve body structure in an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the first valve cover structure in an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of the second valve cover structure in an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of the structure of a rotating member in an embodiment of the present invention;

[0022] Figure 6 2 is a schematic diagram of the structure of the lifting member in the embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of a rotation transmission structure in an embodiment of the present invention;

[0024] Figure 8 2 is a schematic diagram of the structure of the operating lever in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Example

[0026] refer to Figures 1 to 8, a lock-type detachable copper gate valve, comprising a gate valve body 1, a first valve cover 2 arranged on the upper side of the gate valve body 1, an inlet channel 3 and an outlet channel 4 opened in the gate valve body 1, and a valve plate 5 which can be lifted up and down and is arranged between the inlet channel 3 and the outlet channel 4, the gate valve body 1 is provided with a sealing gasket 6 matched with the lower end of the valve plate 5, the gate valve body 1 is rotatably provided with a first valve stem 7 for driving the valve plate 5 to lift up and down, the lower end of the first valve stem 7 is threadedly connected with the valve plate 5, and the lower end of the first valve stem 7 penetrates into the valve plate 5, when the first valve plate 5 rotates, it can drive the valve plate 5 to slide up and down in the gate valve body 1, the upper end of the first valve stem 7 upwardly penetrates the first valve cover 2, the first valve cover 2 is provided with an encryption device for preventing non-staff from operating the first valve stem 7 to rotate and causing the valve plate 5 to open and close, the encryption device comprises: A second valve cover 8 is detachably provided on the first valve cover 2 through a threaded connection. A receiving groove 20 is provided on the upper end of the first valve cover 2 for cooperating with the second valve cover 8 to form an accommodating cavity 9. The upper end of the first valve stem 7 is located in the accommodating cavity 9. A second valve stem 10 is rotatably provided on the second valve cover 8. The upper end of the second valve stem 10 passes through the second valve cover 8 and is connected to a handwheel 11 by bolts. The lower end of the second valve stem 10 is aligned and arranged above the upper end of the first valve stem 7. The lower end of the second valve stem 10 can be lifted up and down and is provided with a rotating transmission member 12 for cooperating with the first valve stem 7. After the rotating transmission member 12 is lowered to a predetermined position, it cooperates with the upper end of the first valve stem 7 and drives the first valve stem 7 to rotate when the second valve stem 10 rotates. A control device for controlling the upward and downward lifting of the rotating transmission member 12 is provided between the first valve cover 2 and the second valve cover 8.

[0027] Among them, the control device includes a lifting member 13 that can be lifted up and down and is arranged in the accommodating chamber 9 to drive the rotating transmission member 12 to lift up and down, a rotating member 14 that is rotatably sleeved on the second valve stem 10 and located in the accommodating chamber 9 to cooperate with the lifting member 13 to drive the lifting member 13 to lift up and down, and an operating lever 15 that is detachably arranged on the rotating member 14 for the user to operate to drive the rotating member 14 to rotate.

[0028] In this embodiment, a mounting groove 16 for accommodating the lower end of the second valve stem 10 is provided at the upper end of the rotating transmission member 12, and a first limiting protrusion 17 is provided on the rotating transmission member 12 in the mounting groove 16. A first limiting groove (not shown in the figure) is provided at the lower end of the second valve stem 10 for the first limiting protrusion 17 to slide up and down and limit the relative rotation between the rotating transmission member 12 and the second valve stem 10. Therefore, in this embodiment, the rotating transmission member 12 is sleeved on the lower end of the second valve stem 10, wherein the mounting groove 16 is used to accommodate the lower end of the second valve stem 10, and the first limiting groove cooperates with the first limiting protrusion 17, so that the rotating transmission member 12 and the second valve stem 10 can only slide up and down with respect to each other, and cannot rotate relative to each other.

[0029] In this embodiment, the upper end of the first valve stem 7 and the lower end of the rotating transmission member 12 are provided with a transmission groove 18 and a transmission cam that cooperate with each other when the rotating transmission member 12 slides downward to a predetermined position. When the rotating transmission member 12 is driven by the lifting member 13 to slide downward to the predetermined position, the transmission groove 18 and the transmission cam provided at the upper end of the first valve stem 7 are engaged with the transmission groove 18 and the transmission cam provided at the lower end of the rotating transmission member 12, so that when the second valve stem 10 rotates, it drives the rotating transmission member 12 to rotate, and the rotating transmission member 12 then drives the first valve stem 7 to rotate.

[0030] In this embodiment, a transmission boss 19 is provided at the upper end of the rotating transmission member 12, and the lifting member 13 is two semi-cylindrical lifting platforms that complement each other into a cylinder. The lifting platform is provided with a receiving groove 20 that can accommodate the transmission boss 19 and is used to push against the transmission boss 19 when the lifting platform is lifted and lowered to drive the transmission boss 19 to move up and down. The lifting platform and the rotating transmission member 12 can rotate relative to each other.

[0031] Wherein, a lifting groove 21 is provided at the lower side of the rotating member 14 for the lifting member 13 to lift up and down, the rotating member 14 is provided with an internal thread at the lifting groove 21, and the lifting member 13 is provided with an external thread matching the internal thread for driving the lifting member 13 to lift when the rotating member 14 rotates, the upper end of the lifting member 13 is located in the lifting groove 21 and resists and cooperates with the side wall of the lifting groove 21, the lower end of the lifting member 13 is located in the accommodating groove 20 and resists and cooperates with the side wall of the accommodating groove 20, the first valve cover 2 is located in the accommodating groove 20 and is provided with a second limiting protrusion / second limiting groove 22, and the side wall of the lifting member 13 is provided with a second limiting protrusion / second limiting groove 22 for cooperating with the second limiting protrusion / second limiting groove 22 for the The lifting member 13 slides up and down in the accommodating groove 20 and limits the second limiting groove 22 / second limiting protrusion of the lifting member 13 to rotate. In the present embodiment (in the attached drawings), the side wall of the lifting member 13 is provided with a second limiting groove 22. Correspondingly, the first valve cover 2 is provided with a second limiting protrusion (not shown in the drawings) located in the accommodating groove 20. The rotating member 14 is connected to the lifting member 13 through a threaded transmission, and the lifting member 13 is restricted from rotating, so it can only slide up and down in the accommodating cavity 9. When in use, when the rotating member 14 rotates, it cooperates with the lifting member 13 to drive the lifting member 13 to slide up and down, and then drives the rotating transmission member 12 to slide up and down, so that the rotating transmission member 12 cooperates with the upper end of the first valve stem 7.

[0032] In order to enable the second valve stem 10 to be rotatably arranged on the rotating member 14, a rotating groove is opened at the upper end of the rotating member 14, and a rotating boss 24 is arranged on the second valve stem 10. The rotating boss 24 is located in the rotating groove, and a first sealing ring 25 is arranged in the rotating groove on the upper side of the rotating boss 24. The first sealing ring 25 is sleeved on the second valve stem 10.

[0033] In addition, a second sealing ring 26 is provided between the first valve stem 7 and the gate valve body 1 , and a third sealing ring 27 is provided between the rotating member 14 and the first valve cover 2 .

[0034] The side wall of the rotating member 14 is evenly provided with a plurality of mounting holes 28. The operating rod 15 is an operating rod 15 whose one end can be inserted into the mounting hole 28 and the other end can be operated by a user to drive the rotating member 14 to rotate. The side wall of the second valve cover 8 is provided with a rotation channel 30 for the operating rod 15 to penetrate and drive the rotating member 14 to rotate a certain angle. When in use, the user can insert one end of the operating rod 15 into the mounting hole 28. When the user operates the other end of the operating rod 15, the rotating member 14 can be driven to rotate. At the same time, a plurality of mounting holes 28 are evenly provided on the side wall of the rotating member 14, so that when the rotating member 14 is rotated to any position, the operating rod 15 can be inserted into one of the mounting holes 28.

[0035] In order to prevent the operating rod 15 from being lost, a chain 31 is provided at one end of the operating rod 15 , and the other end of the chain 31 is connected to the first valve cover 2 / the second valve cover 8 .

[0036] Working principle:

[0037] When it is not needed, the operating rod 15 is in the removed state, that is, it is not inserted into the mounting hole 28. At this time, the rotating transmission member 12 does not slide downward and does not cooperate with the first valve stem 7. At this time, the rotation of the second valve stem 10 will not drive the first valve stem 7 to rotate. It is a normal state. At this time, even if non-staff rotate the second valve stem 10, it will not drive the first valve stem 7 to rotate, and will not drive the valve plate 5 to rise and fall, thereby preventing the gate valve from being opened and closed at will due to random operation by non-staff.

[0038] When it is necessary to control the opening and closing of the valve plate 5 in this embodiment, the staff first inserts the operating rod 15 into the mounting hole 28 of the rotating member 14. Then, the staff operates the operating rod 15 to rotate so that the rotating member 14 can rotate appropriately. When the rotating member 14 rotates, the rotating member 14 drives the lifting member 13 to descend, and the lifting member 13 then drives the rotating transmission member 12 to descend, so that the lower end of the rotating transmission member 12 cooperates with the upper end of the first valve stem 7, so that when the rotating transmission member 12 rotates, it can drive the first valve stem 7 to rotate. Then, the user can rotate the handwheel 11, the handwheel 11 drives the second valve stem 10 to rotate, the second valve stem 10 drives the rotating transmission member 12 to rotate, and the rotating transmission member 12 drives the first valve stem 7 to rotate, thereby driving the valve plate 5 to rise and fall, thereby controlling the opening and closing of the valve.

[0039] The above records are only embodiments of the present invention. Any modification or change made by a person familiar with the present technology using the present invention shall fall within the patent scope claimed by the present invention and shall not be limited to those disclosed in the embodiments.

Claims

1. A lockable detachable copper gate valve, comprising a gate valve body, a first valve cover arranged on the upper side of the gate valve body, a water inlet channel and a water outlet channel opened in the gate valve body, and a valve plate arranged between the water inlet channel and the water outlet channel and capable of being lifted up and down, a first valve stem rotatably arranged on the gate valve body for driving the valve plate to be lifted up and down, the lower end of the first valve stem being threadedly connected to the valve plate, the upper end of the first valve stem passing upward through the first valve cover, and an encryption device for preventing non-staff from operating the first valve stem to rotate and causing the valve plate to be opened and closed being arranged on the first valve cover, characterized in that: The encryption device comprises: a second valve cover is detachably provided on the first valve cover, a receiving groove for cooperating with the second valve cover to form a receiving cavity is provided on the upper end of the first valve cover, the upper end of the first valve stem is located in the receiving cavity, a second valve stem is rotatably provided on the second valve cover, the upper end of the second valve stem passes through the second valve cover and is connected to a hand wheel, the lower end of the second valve stem is aligned and arranged above the upper end of the first valve stem, the lower end of the second valve stem can be lifted up and down and is provided with a rotating transmission member for cooperating with the first valve stem, the rotating transmission member cooperates with the upper end of the first valve stem after descending to a predetermined position and drives the first valve stem to rotate when the second valve stem rotates, and a control device for controlling the lifting and lowering of the rotating transmission member is provided between the first valve cover and the second valve cover; The control device includes a lifting member that can be lifted up and down and is arranged in the accommodating chamber to drive the rotating transmission member to lift up and down, a rotating member that can be rotatably sleeved on the second valve stem and is located in the accommodating chamber to cooperate with the lifting member to drive the lifting member to lift up and down, and an operating member that can be detachably arranged on the rotating member for a user to operate and drive the rotating member to rotate; A transmission boss is arranged at the upper end of the rotating transmission member, and the lifting member is two semi-cylindrical lifting platforms that complement each other into a cylinder. The lifting platform is provided with an accommodating groove that can accommodate the transmission boss so as to press against the transmission boss when the lifting platform is lifted and lowered to drive the transmission boss to move up and down. The lifting platform and the transmission member can rotate relative to each other.

2. A lock-type detachable copper gate valve according to claim 1, characterized in that: The upper end of the rotating transmission member is provided with an installation groove for accommodating the lower end of the second valve stem, the rotating transmission member is provided with a first limiting protrusion located in the installation groove, and the lower end of the second valve stem is provided with a first limiting groove for the first limiting protrusion to slide up and down and limit the relative rotation between the rotating transmission member and the second valve stem.

3. A lockable detachable copper gate valve according to claim 2, characterized in that: The upper end of the first valve stem and the lower end of the rotating transmission member are provided with a transmission groove and a transmission protrusion which cooperate with each other when the rotating transmission member slides downward to a predetermined position.

4. A lock-type detachable copper gate valve according to claim 1, characterized in that: The lower side of the rotating part is provided with a lifting groove for the lifting part to move up and down, the rotating part is provided with an internal thread at the lifting groove, and the lifting part is provided with an external thread matching the internal thread for driving the lifting part to move up and down when the rotating part rotates.

5. A lock-type detachable copper gate valve according to claim 4, characterized in that: The upper end of the lifting member is located in the lifting groove and cooperates with the side wall of the lifting groove, the lower end of the lifting member is located in the accommodating groove and resists the side wall of the accommodating groove, the first valve cover is located in the accommodating groove and is provided with a second limiting protrusion / second limiting groove, and the side wall of the lifting member is provided with a second limiting groove / second limiting protrusion that cooperates with the second limiting protrusion / second limiting groove to allow the lifting member to slide up and down in the accommodating groove and limit the rotation of the lifting member.

6. A lock-type detachable copper gate valve according to claim 1, characterized in that: A rotating groove is provided at the upper end of the rotating member, a rotating boss is provided on the second valve stem, the rotating boss is located in the rotating groove, a first sealing member is provided in the rotating groove on the upper side of the rotating boss, and the first sealing member is sleeved on the second valve stem.

7. A lock-type detachable copper gate valve according to claim 1, characterized in that: The side wall of the rotating part is evenly provided with a plurality of mounting holes, the operating part is an operating rod whose one end can be inserted into the mounting hole and the other end can be operated by a user to drive the rotating part to rotate, and the side wall of the second valve cover is provided with a rotating channel for the operating rod to penetrate and drive the rotating part to rotate a certain angle.

8. A lock-type detachable copper gate valve according to claim 7, characterized in that: A chain is arranged at one end of the operating rod, and the other end of the chain is connected to the first valve cover / the second valve cover.

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