Quick cut-off safety manual flat valve

Abstract

The utility model relates to the technical field of flat gate valves, and discloses a quick-cut-off safety manual flat valve which comprises a valve body, a valve seat, an upper connecting rod arranged above the valve body, a valve cover, an upper connecting rod arranged above the valve seat, a lower connecting rod rotationally arranged at the center position of the valve cover and a quick-release mechanism, and the upper end of the lower connecting rod is connected with the lower end of the upper connecting rod through the quick-release mechanism. The supporting pieces are arranged at the top end of the upper connecting rod and correspond to the inner wall of the upper connecting rod, clamping blocks are arranged on the outward sides of the supporting pieces, clamping grooves are formed in the inner wall of the upper connecting rod and correspond to the clamping blocks, pulling pieces are arranged on the inner sides of the top ends of the supporting pieces, and the other ends of the pulling pieces are connected with the central pressing plate in a hooked mode. External threads are arranged on the outer side of the lower connecting rod, the threads are connected to the lower connecting rod, and the valve plate is arranged at the lower end of the sleeve. According to the utility model, electrical equipment is not needed, and rapid cut-off can still be realized under the condition of power failure, so that the cut-off requirement under the emergency condition is met.

Description

Technical Field

[0001] The utility model relates to the technical field of flat gate valves, in particular to a quick-cut safety manual flat gate valve. Background Art

[0002] The flat gate valve is a sliding valve with parallel gates as the closing part. The closing part can be a single gate or a double gate with a spreading mechanism between them. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or floating valve seat. If it is a double-disc flat gate valve, the spreading mechanism between the two gates can supplement this pressing force.

[0003] Chinese patent CN219317656U discloses a quick-cut safety manual flat valve, comprising a valve seat, which is arranged above the valve body, a valve cover is arranged above the valve seat, an operating chamber is arranged inside the valve seat, and a valve plate is arranged inside the valve body; a valve stem, which is arranged inside the operating chamber, a lifting frame is arranged on the upper end of the valve stem, a positioning hole is arranged on the lifting frame, electric telescopic rods are arranged on both sides of the valve stem, and the telescopic ends of the electric telescopic rods extend to the inside of the positioning hole; a limiting frame, which is arranged on both sides of the valve stem, a first spring is arranged between the limiting frame and the lifting frame, and an electric control box is arranged on one side of the valve seat. The manual flat valve is provided with an elastic pushing mechanism on the valve stem. In an emergency, the valve stem is pushed by the spring, and the valve plate is inserted into the card slot to close the manual flat valve, so that the manual flat valve has a quick-cut function and improves the use effect of the manual flat valve.

[0004] The above technical solution uses an electric telescopic rod to fix the lifting frame and the valve stem. In the event of a power outage, the quick cut-off function also becomes ineffective, and the cut-off requirement in an emergency situation cannot be met. Utility Model Content

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A quick-cut safety manual flat valve comprises a valve body, a valve seat, which is detachably arranged above the valve body, a cavity is arranged in the valve seat, a valve cover, which is detachably arranged above the valve seat, an upper connecting rod, and is rotatably arranged at the center position of the valve cover. The upper connecting rod is a hollow tube, and an operating handle is arranged at the top of the upper connecting rod. The upper end of the lower connecting rod is connected to the lower end of the upper connecting rod through a quick-release mechanism. The quick-release mechanism comprises a plurality of supporting sheets arranged at the top of the upper connecting rod corresponding to the inner wall of the upper connecting rod, a card block is arranged on the outward side of the supporting sheet, and a card groove is arranged on the inner wall of the upper connecting rod corresponding to the card block. Pull tabs are arranged on the inner sides of the top ends of the plurality of supporting sheets, and the other end of the pull tabs is hooked with the central pressure plate. A pressure rod is arranged in the upper connecting rod, and a sealing cover is detachably arranged on the top end of the upper connecting rod. An external thread is arranged on the outer side of the lower connecting rod, and a sleeve is threadedly connected to the lower connecting rod. The valve plate is arranged at the lower end of the sleeve for closing the valve body.

[0007] Preferably, the sealing cover is threadedly connected to the outer wall of the upper connecting rod.

[0008] Preferably, a plurality of guide rings are vertically arranged on the inner wall of the upper connecting rod.

[0009] Preferably, a ring body is provided on the outside of the sleeve, a slide groove is provided on the upper end of the inner wall of the valve seat, a slider is provided on the side wall of the ring body, the slider slides in the slide groove, a plurality of return springs are provided on the lower side of the ring body, and the lower end of the return spring is connected to the top of the valve body.

[0010] Preferably, a mounting hole is provided at the center of the inner bottom surface of the valve body, and a buffer spring is provided in the mounting hole.

[0011] Preferably, a placement hole is laterally arranged at the bottom end of the slide groove toward the valve seat, a limit spring is arranged in the placement hole, a ball is arranged at the end of the limit spring facing inward, the end of the placement hole facing outward is connected with a through hole, which passes through the valve seat, the diameter of the through hole is smaller than the placement hole, a pull rod is arranged on the inward side of the ball, the pull rod extends out of the valve seat through the through hole, and a slot is arranged at the end of the slider facing the valve seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model does not require the aid of electrical equipment and can still achieve rapid disconnection in the event of a power outage, thereby meeting the disconnection requirements in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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:

[0015] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure at A;

[0017] Figure 3 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0018] Figure 4 for Figure 3 Schematic diagram of the structure at point B. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment 1

[0022] like Figure 1 to Figure 2As shown, in this embodiment, a quick-cut safety manual flat valve comprises a valve body 1, a valve seat 2 is bolted to the top of the valve body 1, a cavity is arranged in the valve seat 2, a valve cover 3 is bolted to the top of the valve seat 2, an upper connecting rod 4 is rotatably arranged at the center position of the valve cover 3, the upper connecting rod 4 is a hollow tube, an operating handle 5 is arranged at the top of the upper connecting rod 4, the lower end of the upper connecting rod 4 is connected to the upper end of the lower connecting rod 6 through a quick release mechanism, the quick release mechanism comprises two support sheets 7 symmetrically arranged at the top of the upper connecting rod 4 corresponding to the inner wall of the upper connecting rod 4, a clamping block 8 is arranged on the outward side of the support sheet 7, a clamping groove 28 is arranged on the inner wall of the upper connecting rod 4 corresponding to the clamping block 8, a pull tab 9 is arranged on the inner side of the top of the support sheet 7, the other end of the pull tab 9 is hooked with the central pressure plate 10, a pressure rod 12 is clamped in the upper connecting rod 4 through a rubber ring 11, the pressure rod 12 is higher than the upper connecting rod 4, a cover 13 is detachably arranged at the top of the upper connecting rod 4, and the cover 13 is threadedly connected to the outer wall of the upper connecting rod 4. The outer side of the lower connecting rod 6 is provided with an external thread, a sleeve 14 is threadedly connected to the lower connecting rod 6, and a valve plate 15 is provided at the lower end of the sleeve 14 to close the valve body 1. In order to maintain the stability of the movement of the pressure rod 12, two guide rings 16 are vertically arranged on the inner wall of the upper connecting rod 4, and the pressure rod 12 slides in the guide ring 16.

[0023] The working principle of the above technical solution is:

[0024] When in use, when the valve body 1 is opened and closed normally, it is only necessary to rotate the operating handle 5, the handle drives the upper connecting rod 4 to rotate, the upper connecting rod 4 drives the lower connecting rod 6 to rotate in the sleeve 14, and the sleeve 14 moves up and down to drive the valve plate 15 to move up and down, thereby realizing the opening and closing of the valve body 1. When rapid cutting is required, unscrew the cover 13, use a tool to knock the pressure rod 12, so that the pressure rod 12 squeezes the central pressure plate 10 to move downward, thereby driving the pull tab 9 to move the support plate 7 toward the center of the connecting rod, so that the block 8 is separated from the card slot 28, thereby separating the upper connecting rod 4 from the lower connecting rod 6, and under the action of gravity, the valve plate 15 falls to close the valve body 1, realizing rapid cutting.

[0025] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0026] The utility model does not require the aid of electrical equipment and can still achieve rapid disconnection in the event of a power outage, thereby meeting the disconnection requirements in emergency situations. Embodiment 2

[0027] like Figure 3 to Figure 4As shown, on the basis of the first embodiment, in this embodiment, in order to maintain the stability of the movement of the sleeve 14, a ring body 17 is provided on the outside of the sleeve 14, a slide groove 18 is provided on the upper end of the inner wall of the valve seat 2, and a slider 19 is provided on the side wall of the ring body 17, and the slider 19 slides in the slide groove 18. In order to enable the valve plate 15 to fall quickly when the upper connecting rod 4 and the lower connecting rod 6 are disconnected, a plurality of return springs 20 are provided on the lower side of the ring body 17, and the lower end of the return spring 20 is connected to the top of the valve body 1.

[0028] In this embodiment, in order to prevent the valve plate 15 from directly impacting the valve body 1 when falling, a mounting hole 21 is provided at the center of the bottom surface of the valve body 1 , and a buffer spring 22 is provided in the mounting hole 21 .

[0029] In this embodiment, since there is no limiting effect of the upper connecting rod 4, the valve plate 15 is prevented from being pushed open. A placement hole 23 is horizontally arranged at the bottom end of the slide groove 18 toward the valve seat 2, and a limit spring 24 is arranged in the placement hole 23. A ball 25 is arranged at the end of the limit spring 24 facing the inside. A through hole 26 is connected to the outward end of the placement hole 23, which passes through the valve seat 2. The diameter of the through hole 26 is smaller than the placement hole 23. A pull rod 27 is arranged on the inward side of the ball 25, and the pull rod 27 extends out of the valve seat 2 through the through hole 26. A slot 28 is arranged at the end of the slider 19 facing the valve seat 2. In normal closing, when the valve plate 15 closes the valve body 1, the slider 19 is located above the ball 25.

[0030] The above are only preferred specific implementations of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical solution and its improved conception of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A quick cut-off safety manual flat valve, characterized in that: include, Valve body (1), The valve seat (2) is detachably arranged above the valve body (1), and a cavity is arranged in the valve seat (2). The valve cover (3) is detachably arranged above the valve seat (2). The upper connecting rod (4) is rotatably arranged at the center of the valve cover (3). The upper connecting rod (4) is a hollow tube. An operating handle (5) is arranged at the top of the upper connecting rod (4). The upper end of the lower connecting rod (6) is connected to the lower end of the upper connecting rod (4) through a quick release mechanism. The quick-release mechanism comprises a plurality of support sheets (7) arranged at the top end of the upper connecting rod (4) corresponding to the inner wall of the upper connecting rod (4), a clamping block (8) being arranged on the outward side of the support sheet (7), a clamping groove (28) being arranged on the inner wall of the upper connecting rod (4) corresponding to the clamping block (8), a pull sheet (9) being arranged on the inner side of the top end of each of the plurality of support sheets (7), the other end of the pull sheet (9) being hooked to the central pressure plate (10), a pressure rod (12) being arranged inside the upper connecting rod (4), and a cover (13) being detachably arranged on the top end of the upper connecting rod (4). The outer side of the lower connecting rod (6) is provided with an external thread. The sleeve (14) is threadedly connected to the lower connecting rod (6). The valve plate (15) is arranged at the lower end of the sleeve (14) and is used to close the valve body (1).

2. A quick-cut safety manual flat valve according to claim 1, characterized in that: The sealing cover (13) is threadedly connected to the outer wall of the upper connecting rod (4).

3. A quick-cut safety manual flat valve according to claim 1, characterized in that: A plurality of guide rings (16) are vertically arranged on the inner wall of the upper connecting rod (4).

4. A quick-cut safety manual flat valve according to claim 1, characterized in that: A ring body (17) is arranged on the outside of the sleeve (14), a slide groove (18) is arranged on the upper end of the inner wall of the valve seat (2), a slider (19) is arranged on the side wall of the ring body (17), the slider (19) slides in the slide groove (18), and a plurality of return springs (20) are arranged on the lower side of the ring body (17), and the lower ends of the return springs (20) are connected to the top of the valve body (1).

5. A quick-cut safety manual flat valve according to claim 4, characterized in that: A mounting hole (21) is provided at the center position of the inner bottom surface of the valve body (1), and a buffer spring (22) is provided in the mounting hole (21).

6. A quick-cut safety manual flat valve according to claim 4, characterized in that: A placement hole (23) is laterally arranged at the bottom end of the slide groove (18) toward the valve seat (2), a limit spring (24) is arranged in the placement hole (23), a ball (25) is arranged at the end of the limit spring (24) facing inward, the end of the placement hole (23) facing outward is connected to a through hole (26) that passes through the valve seat (2), the diameter of the through hole (26) is smaller than the placement hole (23), a pull rod (27) is arranged on the inward side of the ball (25), the pull rod (27) extends out of the valve seat (2) through the through hole (26), and a clamping groove (28) is arranged at the end of the slider (19) facing the valve seat (2).

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