Corrugated pipe gate valve

Abstract

The utility model relates to the technical field of corrugated pipe gate valves, and discloses a corrugated pipe gate valve which comprises a valve body. The connecting piece is arranged at the top of the valve body; the adjusting rod is arranged on the connecting piece; the adjusting wheel is arranged at the top of the adjusting rod; the limiting mechanism is arranged at the bottom of the adjusting wheel, the limiting mechanism comprises a limiting groove, a connecting plate and a limiting rod, the limiting groove is formed in the bottom of the adjusting wheel, the connecting plate is fixedly connected to the outer wall of the connecting piece, and the top of the limiting rod is inserted into the limiting groove; the limiting rod is pulled downwards, so that the limiting rod is separated from the limiting groove, the adjusting wheel is unlimited, and the phenomenon that the corrugated pipe gate valve can only be opened and closed under special conditions, but the corrugated pipe gate valve is likely to be accidentally touched by non-staff can be effectively reduced; the situation that danger is easily caused due to the fact that normal operation of a pipeline is affected by accidental touch of the corrugated pipe gate valve is reduced, and the overall stability of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows gate valves, in particular to a bellows gate valve. Background Art

[0002] Bellows gate valves are used on pipelines in some chemical plants. The opening and closing parts of the bellows gate valve are plug-shaped discs with flat or conical sealing surfaces. The discs move linearly along the center line of the fluid.

[0003] The prior art is such as the utility model with publication number CN202510738U. The utility model relates to a valve, in particular to a bellows gate valve, which comprises a valve body, a valve disc, a valve stem, a bellows, a bellows sleeve, a valve cover, a stuffing box, a stuffing, a stuffing plate and a hand wheel. The upper end face and the lower end face of the bellows sleeve are both provided with step surfaces, the lower end face of the valve cover and the upper end face of the valve body are both provided with overlapping surfaces matched with the step surfaces, and the connection between the valve body and the valve cover and the bellows sleeve is provided with a sealing welding ring, and the sealing welding ring is located at the outer edge of the connection between the step surface and the overlapping surface. The utility model has the beneficial effects of being able to effectively enhance the sealing of the connection between the sleeve and the valve body and the valve cover, being able to effectively compensate for the wear of the stuffing, and avoiding leakage due to the wear of the stuffing, etc., and solves the problem that the upper and lower ends of the sleeve in the existing bellows gate valve are respectively connected with the valve cover and the valve body with bolts, which easily causes the phenomenon of bolt failure and causes leakage of the fluid medium.

[0004] The inventor discovered in his daily work that the bellows gate valve can only be opened and closed under special circumstances during use, but the adjustment part of the gate valve is easily touched by non-staff by mistake, causing the valve body to open when closed and close when open, resulting in the pipeline being unable to operate normally and easily causing dangerous accidents. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a bellows gate valve.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bellows gate valve, comprising a valve body; a connecting piece arranged at the top of the valve body; an adjusting rod arranged on the connecting piece; an adjusting wheel arranged at the top of the adjusting rod; and a limiting mechanism arranged at the bottom of the adjusting wheel, the limiting mechanism comprising a limiting groove, a connecting plate and a limiting rod, the limiting groove is opened at the bottom of the adjusting wheel, the connecting plate is fixedly connected to the outer wall of the connecting piece, and the top of the limiting rod is inserted into the inside of the limiting groove.

[0007] Preferably, the bottom of the limit rod passes through the top of the connecting plate and extends to the bottom of the connecting plate, and the limit rod is slidably connected to the connecting plate. The right outer wall of the limit rod is fixedly connected with a connecting plate. By setting the limit rod, the adjusting wheel can be fixed in conjunction with the limit groove to prevent it from rotating, thereby preventing it from rotating due to accidental contact.

[0008] Preferably, one end of a spring 1 is fixedly connected to the bottom of the connecting piece, and the other end of the spring 1 is fixedly connected to the top of the connecting plate, and the setting of the spring 1 can drive the limit rod to reset.

[0009] Preferably, an auxiliary mechanism is provided on the connecting plate, and the auxiliary mechanism includes a movable rod, a sliding hole, a limiting plate 1, a limiting plate 2, a round rod and a spring 2. The sliding hole is opened on the connecting plate, and the movable rod passes through the sliding hole and is slidably connected to the sliding hole. By setting the movable rod, the limiting plate 1 can be driven to move left and right.

[0010] Preferably, the limit plate 1 is fixedly connected to the right outer wall of the movable rod, the limit plate 2 is fixedly connected to the left outer wall of the limit rod, and the limit plate 2 is located above the limit plate 1, and the round rod is fixedly connected to the outer wall of the connecting piece. By setting the limit plate 2, when it is displaced to the bottom of the limit plate 1, it abuts against the limit plate 1, preventing the spring 1 from returning to its original state, so that the limit rod remains in a disengaged state.

[0011] Preferably, the round rod passes through the movable rod and is slidably connected to the movable rod. The second spring is sleeved on the outer wall of the round rod, and the two ends are respectively fixedly connected to the outer wall of the movable rod and the outer wall of the connecting piece. The movable rod can be driven to reset by setting the second spring.

[0012] Compared with the prior art, the utility model provides a bellows gate valve, which has the following beneficial effects:

[0013] 1. This kind of bellows gate valve, by pulling the limit rod downward, makes the limit rod disengage from the limit groove, so that the adjustment wheel releases the restriction, can effectively reduce the bellows gate valve can only be opened and closed under special circumstances, but the bellows gate valve is easy to be accidentally touched by non-staff, and reduces the bellows gate valve accidental touch affecting the normal operation of the pipeline and causing danger, thereby improving the overall stability of the equipment.

[0014] 2. This bellows gate valve, by pushing the movable rod to the left, the limit piece 1 is moved away from the limit piece 2, and the limit rod is pulled down until the limit piece 2 moves to the bottom of the limit piece 1, and the movable rod is released, the limit piece 1 is reset to prevent the limit rod from resetting, so that it is fixed, which is convenient for controlling the opening and closing of the valve body, and there is no need to pull the limit rod all the time, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the adjusting wheel of the utility model;

[0018] Figure 3 It is an enlarged view of A of the present utility model.

[0019] In the figure: 1. valve body; 2. connecting part; 3. adjusting rod; 4. adjusting wheel; 5. limiting mechanism; 501. limiting groove; 502. connecting plate; 503. limiting rod; 504. connecting plate; 505. spring 1; 6. auxiliary mechanism; 601. movable rod; 602. sliding hole; 603. limiting plate 1; 604. limiting plate 2; 605. round rod; 606. spring 2. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Example 1

[0022] like Figure 1-3 As shown, the utility model provides a bellows gate valve, including a valve body 1; a connecting piece 2 arranged at the top of the valve body 1; an adjusting rod 3 arranged on the connecting piece 2; an adjusting wheel 4 arranged at the top of the adjusting rod 3, the valve body 1, the connecting piece 2, the adjusting rod 3 and the adjusting wheel 4 constitute the bellows gate valve, and its internal structure is the prior art and will not be described in detail; and a limiting mechanism 5 arranged at the bottom of the adjusting wheel 4, the limiting mechanism 5 includes a limiting groove 501, a connecting plate 502 and a limiting rod 503, the limiting groove 501 is opened at the bottom of the adjusting wheel 4, the connecting plate 502 is fixedly connected to the outer wall of the connecting piece 2, and the top of the limiting rod 503 is inserted into the valve body 1; ... the internal structure of the bellows gate valve is the prior art and will not be described in detail. The limit rod 503 is connected to the inside of the limit groove 501, and the bottom of the limit rod 503 passes through the top of the connecting plate 502 and extends to the bottom of the connecting plate 502, and the limit rod 503 is slidably connected to the connecting plate 502. The right outer wall of the limit rod 503 is fixedly connected with a connecting piece 504. By setting the limit rod 503, the adjusting wheel 4 can be fixed in cooperation with the limit groove 501 to prevent it from rotating and prevent it from rotating due to accidental contact. The bottom of the connecting piece 504 is fixedly connected with one end of a spring 505, and the other end of the spring 505 is fixedly connected to the top of the connecting plate 502. By setting the spring 505, the limit rod 503 can be driven to reset.

[0023] In this embodiment, by installing the bellows gate valve to a suitable position, the opening and closing of the valve body 1 can be controlled by rotating the adjusting wheel 4, and the limiting rod 503 is pulled downward so that the limiting rod 503 is disengaged from the limiting groove 501, thereby releasing the restriction of the adjusting wheel 4.

[0024] Example 2

[0025] like Figure 1-3 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, an auxiliary mechanism 6 is provided on the connecting plate 502, and the auxiliary mechanism 6 includes a movable rod 601, a sliding hole 602, a limiting piece 1 603, a limiting piece 2 604, a round rod 605 and a spring 2 606. The sliding hole 602 is provided on the connecting plate 502, and the movable rod 601 passes through the sliding hole 602 and is slidably connected to the sliding hole 602. By setting the movable rod 601, the limiting piece 1 603 can be driven to move left and right. The limiting piece 1 603 is fixedly connected to the right outer wall of the movable rod 601, and the limiting piece 2 604 is fixedly connected to the limiting rod 503. The left outer wall of the connecting piece 2 is formed, and the limiting piece 2 604 is located above the limiting piece 1 603. The round rod 605 is fixedly connected to the outer wall of the connecting piece 2. By setting the limiting piece 2 604, when it is displaced to the bottom of the limiting piece 1 603, it abuts against the limiting piece 1 603 to prevent the spring 1 505 from recovering, so that the limiting rod 503 remains in a disengaged state. The round rod 605 penetrates the movable rod 601 and is slidably connected to the movable rod 601. The spring 2 606 is sleeved on the outer wall of the round rod 605, and the two ends are respectively fixedly connected to the outer wall of the movable rod 601 and the outer wall of the connecting piece 2. By setting the spring 2 606, the movable rod 601 can be driven to reset.

[0026] In this embodiment, the movable rod 601 is pushed to the left so that the limit plate 1 603 is moved away from the limit plate 2 604, and the limit rod 503 is pulled down until the limit plate 2 604 moves to the bottom of the limit plate 1 603, and the movable rod 601 is released. The limit plate 1 603 is reset to prevent the limit rod 503 from resetting and fix it, which makes it convenient to control the opening and closing of the valve body 1. There is no need to keep pulling the limit rod 503, thereby improving the convenience of operation.

[0027] The following is a detailed description of the working principle of this kind of bellows gate valve.

[0028] like Figure 1-3As shown, when in use, by installing the bellows gate valve to a suitable position, rotating the adjusting wheel 4 can control the opening and closing of the valve body 1, pulling the limit rod 503 downward, so that the limit rod 503 is separated from the limit groove 501, so that the regulating wheel 4 releases the restriction, which can effectively reduce the bellows gate valve can only be opened and closed under special circumstances, but the bellows gate valve is easily accidentally touched by non-staff, and reduces the bellows gate valve accidentally touching the normal operation of the pipeline and easily causing danger, thereby improving the overall stability of the equipment; when the restriction of the regulating wheel 4 is released, by toggling the movable rod 601 to the left, the limit piece 1 603 is moved away from the limit piece 2 604, and the limit rod 503 is pulled down until the limit piece 2 604 moves to the bottom of the limit piece 1 603, the movable rod 601 is released, and the limit piece 1 603 is reset to prevent the limit rod 503 from resetting, so that it is fixed, which is convenient for controlling the opening and closing of the valve body 1, and there is no need to pull the limit rod 503 all the time, thereby improving the convenience of operation.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bellows gate valve, comprising a valve body (1); a connecting piece (2) arranged at the top of the valve body (1); an adjusting rod (3) arranged on the connecting piece (2); an adjusting wheel (4) arranged at the top of the adjusting rod (3); and a limiting mechanism (5) arranged at the bottom of the adjusting wheel (4), characterized in that: The limiting mechanism (5) comprises a limiting groove (501), a connecting plate (502) and a limiting rod (503); the limiting groove (501) is provided at the bottom of the adjusting wheel (4); the connecting plate (502) is fixedly connected to the outer wall of the connecting member (2); and the top of the limiting rod (503) is inserted into the inside of the limiting groove (501).

2. A bellows gate valve according to claim 1, characterized in that: The bottom of the limiting rod (503) passes through the top of the connecting plate (502) and extends to the bottom of the connecting plate (502), and the limiting rod (503) is slidably connected to the connecting plate (502), and a connecting plate (504) is fixedly connected to the right outer wall of the limiting rod (503).

3. A bellows gate valve according to claim 2, characterized in that: One end of spring one (505) is fixedly connected to the bottom of the connecting plate (504), and the other end of spring one (505) is fixedly connected to the top of the connecting plate (502).

4. The bellows gate valve according to claim 1, characterized in that: The connecting plate (502) is provided with an auxiliary mechanism (6), and the auxiliary mechanism (6) comprises a movable rod (601), a sliding hole (602), a first limiting plate (603), a second limiting plate (604), a round rod (605) and a second spring (606). The sliding hole (602) is provided on the connecting plate (502), and the movable rod (601) passes through the sliding hole (602) and is slidably connected to the sliding hole (602).

5. A bellows gate valve according to claim 4, characterized in that: The first limiting piece (603) is fixedly connected to the right outer wall of the movable rod (601), the second limiting piece (604) is fixedly connected to the left outer wall of the limiting rod (503), and the second limiting piece (604) is located above the first limiting piece (603), and the round rod (605) is fixedly connected to the outer wall of the connecting member (2).

6. A bellows gate valve according to claim 5, characterized in that: The round rod (605) passes through the movable rod (601) and is slidably connected to the movable rod (601); the second spring (606) is sleeved on the outer wall of the round rod (605), and its two ends are respectively fixedly connected to the outer wall of the movable rod (601) and the outer wall of the connecting piece (2).

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