Signal gate valve for fire fighting

Abstract

The utility model discloses a signal gate valve for fire fighting. The signal gate valve comprises a gate valve body, a valve rod, a hand wheel, a driving gear, a signal output module, a first driven gear, a locking device and a labor-saving device. The locking device is arranged on the left side wall of the gate valve body, the telescopic lock is locked through the key, the spring bolt of the telescopic lock is inserted into the inner side of the annular groove, and when the connecting shaft tries to rotate, the spring bolt can clamp the connecting shaft through the partition to enable the connecting shaft not to rotate. By arranging a labor-saving device on the edge portion of a hand wheel, overturning and unfolding an extension arm outwards, then controlling and rotating the hand wheel by means of the extension arm, according to the lever principle, the labor-saving device is arranged on the edge portion of the hand wheel, and the labor-saving device can be used for locking the driving gear to limit the rotation of the valve rod, so that the labor-saving device can be used for locking the valve rod and preventing irrelevant personnel from opening the gate valve body at will. The extension arm is used for increasing the length of the power arm in the lever, so that the rotation of the hand wheel is more labor-saving.

Description

Technical Field

[0001] The utility model relates to the field related to fire signal gate valves, in particular to a fire signal gate valve. Background Art

[0002] The fire signal gate valve is a special-purpose valve used for water source control in fire protection systems. It is usually used in fire water supply pipelines to control the opening and closing of water flow, as well as to provide flow monitoring and signal output functions.

[0003] Existing patent application number: CN201922199144.5 A fire signal gate valve includes a valve body. The utility model is provided with a lamp holder, a mounting frame and an annular limit cavity. When the slider is completely entered into the interior of the slide groove, the alarm light is rotated, and the slider can enter the interior of the annular limit cavity along the slide groove. The annular limit cavity can limit the slider. A quick connection is achieved between the mounting frame and the lamp holder. An upper sealing plate and a lower sealing plate are provided. The double-layer sealing design increases the sealing between the valve stem and the connecting seat, avoids water leakage of the valve body from the connecting seat, and improves the sealing effect.

[0004] The above patent records a fire signal gate valve, which is equipped with a signal output device that can provide information such as valve switch status and fault alarm. However, the gate valve cannot be locked when it is idle. Unrelated personnel can directly open the valve to spray high-pressure water. Improper operation may easily cause harm to others and waste water resources. In addition, the handwheel structure of the gate valve is simple, and its structure can be optimized to make its operation more convenient and labor-saving, so as to enhance the user experience. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a signal gate valve for fire fighting.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a signal gate valve for fire fighting, comprising a gate valve body, a valve stem, a hand wheel, a driving gear, a signal output module, a No. 1 driven gear, a locking device and a labor-saving device, wherein the valve core inside the gate valve body is connected to the valve stem, and the valve stem extends from the top of the gate valve body, a hand wheel is bolted to the top of the valve stem, a driving gear is sleeved and fixed to the outside of the valve stem, a signal output module is screwed to the right wall of the gate valve body, a No. 1 driven gear is installed on the top shaft of the signal output module, the No. 1 driven gear is meshed with the right part of the driving gear, and the left side of the gate valve body A locking device is provided on the side wall, and the locking device includes a shell, a connecting shaft, a No. 2 driven gear, a telescopic lock, an annular groove and a partition. The left side wall of the gate valve body is screwed with a shell, and a connecting shaft is rotatably installed on the inner side of the shell, and the connecting shaft extends from the top of the shell, and a No. 2 driven gear is installed on the top of the connecting shaft, and the No. 2 driven gear is meshed with the left part of the driving gear. A telescopic lock is installed on the left side wall of the shell, and an annular groove is provided on the surface of the connecting shaft. When the telescopic lock is in a locked state, its lock tongue will be inserted into the inner side of the annular groove, a partition is provided on the edge of the annular groove, and a labor-saving device is provided on the edge of the handwheel.

[0007] Preferably, when the telescopic lock is in an unlocked state, the lock tongue is completely separated from the inner side of the annular groove.

[0008] Preferably, the number of teeth on the second driven gear is greater than the number of teeth on the driving gear.

[0009] Preferably, the labor-saving device comprises an extension arm and a vertical handle, the extension arm is hingedly mounted on the edge of the hand wheel, the vertical handle is rotatably mounted on the end of the extension arm, and the vertical handle is perpendicular to the extension arm.

[0010] Preferably, the flipping angle range of the extension arm is not less than 180 degrees.

[0011] Preferably, horizontal handles are symmetrically provided on both sides of the extension arm, and the horizontal handles are parallel to the extension arm.

[0012] Beneficial effects of the utility model:

[0013] The utility model provides a locking device on the left side wall of the gate valve body, and locks the telescopic lock by a key, so that the locking tongue of the telescopic lock is inserted into the inner side of the annular groove. When the connecting shaft tries to rotate, the locking tongue will block the connecting shaft through the partition so that it cannot complete the rotation. In this way, the stagnant No. 2 driven gear will block the driving gear and limit the rotation of the valve stem, thereby locking the valve stem and preventing irrelevant personnel from opening the gate valve body at will.

[0014] The utility model provides a labor-saving device at the edge of the hand wheel, and the extension arm is turned outward to unfold, and then the hand wheel is controlled to rotate with the help of the extension arm. According to the lever principle, the extension arm increases the length of the power arm in the lever, so that the rotation of the hand wheel is more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the utility model;

[0016] Figure 2 This utility model Figure 1 Schematic diagram of the local structure;

[0017] Figure 3 It is a front view cross-sectional structural diagram of the housing in the utility model;

[0018] Figure 4 It is a schematic diagram of the top cross-sectional structure of the connecting shaft in the utility model;

[0019] Figure 5 It is a schematic diagram of the top view of the hand wheel in the utility model;

[0020] Figure 6 This utility model Figure 5 Schematic diagram of the structure after the middle extension arm is unfolded.

[0021] Among them: gate valve body-1, valve stem-2, hand wheel-3, driving gear-4, signal output module-5, driven gear No. 1-6, locking device-7, housing-71, connecting shaft-72, driven gear No. 2-73, telescopic lock-74, annular groove-75, partition-76, labor-saving device-8, extension arm-81, vertical handle-82, horizontal handle-83. DETAILED DESCRIPTION

[0022] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0023] See also Figure 1The utility model provides a signal gate valve for fire fighting, comprising a gate valve body 1, a valve stem 2, a hand wheel 3, a driving gear 4, a signal output module 5, a No. 1 driven gear 6, a locking device 7 and a labor-saving device 8. The valve core inside the gate valve body 1 is connected with the valve stem 2, and the valve stem 2 extends from the top of the gate valve body 1. The hand wheel 3 is bolted on the top of the valve stem 2, and the driving gear 4 is sleeved and fixed on the outside of the valve stem 2. The signal output module 5 is screwed on the right side wall of the gate valve body 1. The No. 1 driven gear 6 is installed on the top shaft of the signal output module 5. The No. 1 driven gear 6 is meshed with the right part of the driving gear 4. When the valve stem 2 rotates, the No. 1 driven gear 6 is driven to rotate through the driving gear 4. The signal output module 5 detects the opening and closing state of the gate valve body 1. The locking device 7 is arranged on the left side wall of the gate valve body 1, and the labor-saving device 8 is arranged on the edge of the hand wheel 3.

[0024] See also Figure 2-4 The locking device 7 in the utility model includes a housing 71, a connecting shaft 72, a second driven gear 73, a telescopic lock 74, an annular groove 75 and a partition 76. The housing 71 is screwed on the left side wall of the gate valve body 1, and a connecting shaft 72 is rotatably installed on the inner side of the housing 71, and the connecting shaft 72 extends from the top of the housing 71. A second driven gear 73 is installed on the top of the connecting shaft 72, and the second driven gear 73 is meshed with the left part of the driving gear 4. A telescopic lock 74 is installed on the left side wall of the housing 71, and an annular groove 75 is provided on the surface of the connecting shaft 72. When the telescopic lock 74 is in a locked state, its lock tongue will be inserted into the inner side of the annular groove 75. A partition 76 is provided on the edge of the annular groove 75. After the lock tongue of the telescopic lock 74 is inserted into the annular groove 75, when the connecting shaft 72 attempts to rotate, the lock tongue will clamp the connecting shaft 72 through the partition 76 so that it cannot complete the rotation, thereby realizing the locking of the valve stem 2.

[0025] To further explain, when the telescopic lock 74 is in the unlocked state, the lock tongue thereof is completely separated from the inner side of the annular groove 75 , so that the connecting shaft 72 can completely resume free rotation without affecting the normal operation of the valve stem 2 .

[0026] Further explanation: the number of teeth of the second driven gear 73 is greater than that of the driving gear 4, so that the locking device 7 can lock the valve stem 2 in a smaller rotation range, thereby ensuring the locking effect.

[0027] See also Figure 5-6 The labor-saving device 8 in the utility model includes an extension arm 81 and a vertical handle 82. The extension arm 81 is hingedly installed on the edge of the hand wheel 3. The end of the extension arm 81 is rotatably installed with the vertical handle 82. The vertical handle 82 is perpendicular to the extension arm 81. The extension arm 81 can be used to control the rotation of the hand wheel 3. According to the principle of lever, the function of the extension arm 81 is to increase the length of the power arm in the lever, so that the rotation of the hand wheel 3 is more labor-saving.

[0028] It is further explained that the turning angle range of the extension arm 81 is not less than 180 degrees, so that the extension arm 81 can be turned outward and unfolded, and can also be turned inward and folded on the top of the hand wheel 3 to reduce the space occupied by the labor-saving device 8.

[0029] To further explain, horizontal handles 83 are symmetrically provided on both sides of the extension arm 81, and the horizontal handles 83 are parallel to the extension arm 81. When operating the extension arm 81, the user can choose to hold the vertical handle 82 or the horizontal handle 83 according to his own usage habits to operate more effectively.

[0030] Here’s how it works:

[0031] First, before use, the signal output module 5 is first connected to an external system so that firefighters can remotely understand the opening and closing status of the gate valve body 1 through the signal output module 5 .

[0032] Second, when in use, first use the key to unlock the telescopic lock 74 so that the lock tongue of the telescopic lock 74 is disengaged from the inner side of the annular groove 75, allowing the connecting shaft 72 to resume free rotation, so that the No. 2 driven gear 73 will not get stuck in the driving gear 4 to restrict the rotation of the valve stem 2, and the user can operate the handwheel 3 to control the gate valve body 1 to open and close. During this process, the valve stem 2 will drive the driving gear 4 to drive the No. 1 driven gear 6 to rotate through the driving gear 4, and the signal output module 5 detects the opening and closing status of the gate valve body 1, and sends the signal to the external system, so that the firefighters can understand the opening and closing status of the gate valve body 1 in time.

[0033] Third, when operating the handwheel 3, the extension arm 81 can be flipped outward and unfolded, and then the extension arm 81 can be used to control the rotation of the handwheel 3. According to the principle of lever, the function of the extension arm 81 is to increase the length of the power arm in the lever, so that the rotation of the handwheel 3 is more labor-saving. In addition, when operating the extension arm 81, the user can choose to hold the vertical handle 82 or the horizontal handle 83 according to his own usage habits, so as to operate and exert force more effectively.

[0034] Fourth, in order to prevent others from opening the gate valve body 1 and causing harm to people due to high-pressure water flow, the telescopic lock 74 can be locked with a key so that the lock tongue of the telescopic lock 74 is inserted into the inner side of the annular groove 75. When the connecting shaft 72 attempts to rotate, the lock tongue will jam the connecting shaft 72 through the partition 76 to prevent it from completing the rotation. In this way, the stagnant No. 2 driven gear 73 will jam the driving gear 4 to limit the rotation of the valve stem 2, thereby locking the valve stem 2 and preventing unauthorized personnel from arbitrarily opening the gate valve body 1.

[0035] The utility model provides a signal gate valve for fire fighting, wherein a locking device 7 is arranged on the left side wall of the gate valve body 1, and a telescopic lock 74 is locked by a key, so that the locking tongue of the telescopic lock 74 is inserted into the inner side of the annular groove 75, and when the connecting shaft 72 tries to rotate, the locking tongue will jam the connecting shaft 72 through the partition 76 so that it cannot complete the rotation, so that the stagnant No. 2 driven gear 73 will jam the driving gear 4 to limit the rotation of the valve stem 2, thereby locking the valve stem 2 and preventing irrelevant personnel from opening the gate valve body 1 at will, and a labor-saving device 8 is arranged on the edge of the hand wheel 3, and the extension arm 81 is turned outward and unfolded, and then the hand wheel 3 is controlled to rotate with the help of the extension arm 81. According to the principle of lever, the role of the extension arm 81 is to increase the length of the power arm in the lever, so that the rotation of the hand wheel 3 is more labor-saving.

[0036] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A signal gate valve for fire fighting, comprising a gate valve body (1), a valve stem (2), a hand wheel (3), a driving gear (4), a signal output module (5) and a first driven gear (6), wherein a valve core inside the gate valve body (1) is connected to the valve stem (2), and the valve stem (2) extends from the top of the gate valve body (1), a hand wheel (3) is bolted on the top of the valve stem (2), a driving gear (4) is sleeved and fixed on the outside of the valve stem (2), a signal output module (5) is screwed on the right side wall of the gate valve body (1), a first driven gear (6) is mounted on the top shaft of the signal output module (5), and the first driven gear (6) is meshed with the right part of the driving gear (4); Features: The invention also comprises a locking device (7) and a labor-saving device (8). The left side wall of the gate valve body (1) is provided with a locking device (7). The locking device (7) comprises a housing (71), a connecting shaft (72), a second driven gear (73), a telescopic lock (74), an annular groove (75) and a partition (76). The left side wall of the gate valve body (1) is screwed with the housing (71). The inner side of the housing (71) is rotatably provided with a connecting shaft (72), and the connecting shaft (72) extends from the top of the housing (71). A second driven gear (73) is installed at the top end of the connecting shaft (72), and the second driven gear (73) is meshed with the left part of the driving gear (4). A telescopic lock (74) is installed on the left side wall of the housing (71). An annular groove (75) is provided on the surface of the connecting shaft (72). When the telescopic lock (74) is in a locked state, its lock tongue will be inserted into the inner side of the annular groove (75). A partition (76) is provided at the edge of the annular groove (75). A labor-saving device (8) is provided at the edge of the hand wheel (3).

2. A fire signal gate valve according to claim 1, characterized in that: When the telescopic lock (74) is in an unlocked state, its lock tongue is completely separated from the inner side of the annular groove (75).

3. According to claim 1, a fire signal gate valve is characterized in that: The number of teeth of the second driven gear (73) is greater than the number of teeth of the driving gear (4).

4. A fire signal gate valve according to claim 1, characterized in that: The labor-saving device (8) comprises an extension arm (81) and a vertical handle (82); the extension arm (81) is hingedly mounted on the edge of the hand wheel (3); the vertical handle (82) is rotatably mounted on the end of the extension arm (81); and the vertical handle (82) is perpendicular to the extension arm (81).

5. A fire signal gate valve according to claim 4, characterized in that: The tilting angle range of the extension arm (81) is not less than 180 degrees.

6. A fire signal gate valve according to claim 4, characterized in that: Horizontal handles (83) are symmetrically arranged on both sides of the extension arm (81), and the horizontal handles (83) are parallel to the extension arm (81).

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