Pressure detector of self-drainage fire hydrant

Abstract

The utility model provides a pressure detector for a self-drainage fire hydrant, and belongs to the technical field of fire fighting. A self-drainage fire hydrant pressure detector comprises a detection cylinder and a connector, a detection set is arranged in the middle of the detection cylinder, a valve element assembly and a self-adjusting assembly are distributed on the two sides of the detection cylinder, and the self-adjusting assembly and the valve element assembly are distributed on the two sides of the detection set; the valve element assembly comprises a ball valve rotating in the detection cylinder, two symmetrically-arranged valve rods are installed on the peripheral side of the ball valve, through the arrangement of the sliding block, in the process of disassembling the detection cylinder, the ball valve can be directly opened through the pull rope to conduct drainage, when the detection cylinder is completely taken down, the valve element assembly can be conveniently disassembled, and the detection cylinder can be conveniently disassembled. And most of accumulated water in the detection cylinder is discharged, so that the drainage process of the detector is greatly shortened, and continuous detection is facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of fire protection, and in particular relates to a self-draining fire hydrant pressure detector. Background Art

[0002] An outdoor fire hydrant is a water supply facility installed on the fire water supply network outside a building. It is mainly used for fire trucks to draw water from the municipal water supply network or the outdoor fire water supply network for fire extinguishing. It can also be directly connected to water hoses and water guns to discharge water for fire extinguishing. Therefore, the outdoor fire hydrant system is also one of the important fire-fighting facilities for fighting fires.

[0003] During the fire hydrant pressure test, the fire hydrant switch needs to be turned on to allow water to flow into the detector. After the test, the water inside needs to be drained to prevent excessive water flow from affecting the next test. Nowadays, when draining water, the detector is only drained after it is completely disassembled. Due to the complexity of its internal components, the drainage time is relatively long. When continuous testing is required, the testing time is greatly increased. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a self-draining fire hydrant pressure detector.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-draining fire hydrant pressure detector, comprising a detection cylinder and a connector, wherein the middle part of the detection cylinder is provided with a detection group, characterized in that: a valve core assembly and a self-adjusting assembly are distributed on both sides of the detection cylinder, and the self-adjusting assembly and the valve core assembly are distributed on both sides of the detection group;

[0006] The valve core assembly includes a ball valve rotating in the detection cylinder, and two symmetrically arranged valve stems are installed on the outer peripheral side of the ball valve;

[0007] The self-adjusting component includes two symmetrically arranged sliders that slide in the detection cylinder. A limiting ball is provided in the slider. A pull rope is fixed between one end of the slider and the valve stem. The pull rope drives the valve stem to rotate by moving the slider to open the ball valve for drainage.

[0008] Optionally, an extension ring is provided on the outer peripheral side of the end of the detection cylinder, and the extension ring is located at the self-adjusting component. A main limit groove is provided on the end face of the detection cylinder close to the extension ring, and a secondary limit groove is provided at the end of the main limit groove. Both the main limit groove and the secondary limit groove are connected to the detection cylinder, and a sliding groove is provided at the bottom of the main limit groove. The slider slides in the sliding groove, and a card groove is provided at the bottom of the sliding groove.

[0009] Optionally, an adjustment groove is provided in the slider, the locking ball rolls in the adjustment groove, the bottom of the adjustment groove is arranged as an inclined surface, a locking block is slidably disposed on the end surface of the slider away from the center line of the detection cylinder, and the locking block abuts against the locking ball.

[0010] Optionally, the connector is screwed onto the water outlet of the fire hydrant, and a connecting rod is fixed to an end surface of one side of the connector close to the detection cylinder.

[0011] Optionally, one side of the valve stem extends to the outside, and a handle is fixed to the outside part thereof. A wire wheel is mounted on the valve stem, one end of the pull rope is fixed and wound around the wire wheel, and the other end is fixed to the slider.

[0012] Optionally, the detection group includes a detachably mounted pressure display and a pressure membrane in the detection tube, and the pressure in the detection tube can be detected by squeezing the pressure membrane to drive the indicating needle in the pressure display to rotate.

[0013] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Due to the setting of the self-adjusting component, the slider can be set so that during the removal of the detection cylinder, the ball valve can be directly opened by pulling the rope for drainage. When the detection cylinder is completely removed, most of the accumulated water inside the detection cylinder is also discharged, which greatly shortens the drainage process of the detector and facilitates its continuous detection.

[0015] 2. The setting of the connecting rod can greatly facilitate the installation and disassembly of the detector and greatly reduce the work intensity of the detector personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 It is a cross-sectional view of the utility model.

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 For this utility model Figure 2 Enlarged view of point B in the middle.

[0020] 10. Detection cylinder; 11. Connector; 12. Pressure display; 13. Pressure membrane; 14. Connecting rod; 15. Extension ring; 16. Slot; 17. Slide; 18. Main limit slot; 19. Secondary limit slot; 20. Slider; 21. Adjustment slot; 22. Card ball; 23. Card block; 24. Valve stem; 25. Ball valve; 26. Wire wheel; 27. Pull rope. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0022] As shown in Figures 1-4, a self-draining fire hydrant pressure detector includes a detection tube 10 and a connector 11. The connector 11 is screwed at the water outlet of the fire hydrant. A connecting rod 14 is fixed to the end face of the connector 11 close to the detection tube 10. A detection group is provided in the middle part of the detection tube 10. The detection group includes a detachable pressure display 12 and a pressure membrane 13 in the detection tube 10. The pressure in the detection tube 10 can be detected by squeezing the pressure membrane 13 to drive the indicator needle in the pressure display 12 to rotate. The valve core assembly and the self-adjusting assembly are distributed on both sides of the detection tube 10. The self-adjusting assembly and the valve core assembly are distributed on both sides of the detection group. The valve core assembly includes a ball valve 25 rotating in the detection tube 10. Two symmetrically arranged valve stems 24 are installed on the outer peripheral side of the ball valve 25.

[0023] The self-adjusting component includes two symmetrically arranged sliders 20 that slide in the detection cylinder 10. A limiting ball 22 is provided in the slider 20. A pull rope 27 is fixed between one end of the slider 20 and the valve stem 24. The pull rope 27 drives the valve stem 24 to rotate by moving the slider 20 to open the ball valve 25 for drainage. One side of the valve stem 24 extends to the outside, and a handle is fixed to its outside part. A wire wheel 26 is mounted on the valve stem 24. One end of the pull rope 27 is fixed and wound around the wire wheel 26, and the other end is fixed to the slider 20.

[0024] An extension ring 15 is provided on the outer peripheral side of the end of the detection cylinder 10, and the extension ring 15 is located at the self-adjusting component. A main limit groove 18 is provided on the end face of the detection cylinder 10 close to the extension ring 15, and a secondary limit groove 19 is provided at the end of the main limit groove 18. Both the main limit groove 18 and the secondary limit groove 19 are connected with the detection cylinder 10. A slide groove 17 is provided at the bottom of the main limit groove 18, and a slider 20 slides in the slide groove 17. A clamping groove 16 is provided at the bottom of the slide groove 17. An adjusting groove 21 is provided in the slider 20, and a clamping ball 22 rolls in the adjusting groove 21. The bottom of the adjusting groove 21 is set as an inclined surface. A clamping block 23 slides on the end face of the slider 20 away from the center line of the detection cylinder 10, and the clamping block 23 abuts against the clamping ball 22.

[0025] When in use, the connector 11 needs to be always installed at the water outlet of the fire hydrant in daily state, and a normal fire hydrant interface is installed inside the connector 11 for daily use of the fire water pipe. When it is necessary to detect the water pressure, the detection tube 10 can be directly put on the connector 11. During the installation process, the connecting rod 14 on the connector 11 enters from the main limit groove 18, and abuts against the card ball 22 to make it enter the wider side of the adjustment groove 21, so that the card ball 22 cannot block the connecting rod 14, and then the connecting rod 1 4 can enter the auxiliary limit groove 19, and by half-rotating the detection cylinder 10, the detection cylinder 10 can be buckled on the connector 11, and at the same time, it is sealed by the sealing ring on the connector 11 to complete the state of waiting for detection. At this time, it is necessary to open the fire hydrant, and the water flows into the detection cylinder 10, and then flows out from the ball valve 25 to facilitate the emptying of the air in the detection cylinder 10. Then, the valve stem 24 is rotated to close the ball valve 25, so that a closed space is formed inside the detection cylinder 10. When the valve stem 24 is closed, the pulley 26 drives the pull rope 27 to make the detection cylinder 10 The slider 20 moves in a direction away from the connector 11, so that the water pressure acts on the pressure membrane 13, and the specific water pressure is detected by the pressure display 12. After the detection is completed, the detection cylinder 10 can be directly rotated in the opposite direction to make the connecting rod 14 in the main limit groove 18, and then the detection cylinder 10 is pulled outward. Due to the restriction of the card ball 22, during the process of pulling the detection cylinder 10, the connecting rod 14 abuts against the card ball 22, driving the slider 20 to move to the side close to the connector 11 until the card block 23 moves to correspond to the card slot 16, and then the card block 23 can enter the card slot 16, so that the card ball 22 can no longer restrict the connecting rod 14. At this time, the detection cylinder 10 can be directly removed, and during the movement of the slider 20, the pulley 26 will be driven to rotate in the opposite direction through the pull rope 27, and the pulley 26 drives the ball valve 25 to rotate and open through the valve stem 24. Drainage can be carried out during the removal process. When the detection cylinder 10 is completely removed, most of the accumulated water inside the detection cylinder 10 is also discharged, which greatly shortens the drainage process of the detector, so that it is convenient for continuous detection.

[0026] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A self-draining fire hydrant pressure detector, comprising a detection cylinder (10) and a connector (11), wherein a detection group is provided in the middle portion of the detection cylinder (10), characterized in that: The detection cylinder (10) is provided with valve core components and self-adjusting components on both sides thereof, and the self-adjusting components and valve core components are distributed on both sides of the detection group; The valve core assembly comprises a ball valve (25) rotating in the detection cylinder (10), and two symmetrically arranged valve stems (24) are installed on the outer peripheral side of the ball valve (25); The self-adjusting component comprises two symmetrically arranged sliders (20) which slide in the detection cylinder (10), wherein a limiting ball (22) is arranged in the slider (20), and a pull rope (27) is fixed between one end of the slider (20) and the valve stem (24), and the slider (20) moves so that the pull rope (27) drives the valve stem (24) to rotate, thereby opening the ball valve (25) for drainage.

2. A self-draining fire hydrant pressure detector according to claim 1, characterized in that: An extension ring (15) is provided on the outer peripheral side of the end of the detection cylinder (10), and the extension ring (15) is located at the self-adjusting component. A main limiting groove (18) is provided on the end surface of the detection cylinder (10) close to the extension ring (15), and a secondary limiting groove (19) is provided at the end of the main limiting groove (18). Both the main limiting groove (18) and the secondary limiting groove (19) are connected to the inside of the detection cylinder (10). A sliding groove (17) is provided at the bottom of the main limiting groove (18), and the sliding block (20) slides in the sliding groove (17). A clamping groove (16) is provided at the bottom of the sliding groove (17).

3. A self-draining fire hydrant pressure detector according to claim 2, characterized in that: An adjusting groove (21) is provided in the slider (20), the locking ball (22) rolls in the adjusting groove (21), the bottom of the adjusting groove (21) is arranged as an inclined surface, a locking block (23) is slidably provided on the end surface of one side of the slider (20) away from the center line of the detection cylinder (10), and the locking block (23) abuts against the locking ball (22).

4. A self-draining fire hydrant pressure detector according to claim 1, characterized in that: The connector (11) is screwed onto the water outlet of the fire hydrant, and a connecting rod (14) is fixed to an end surface of one side of the connector (11) close to the detection cylinder (10).

5. The self-draining fire hydrant pressure detector according to claim 1, characterized in that: The valve stem (24) on one side extends to the outside, and a handle is fixed to the outside part. The valve stem (24) is provided with a wire wheel (26). One end of the pull rope (27) is fixed and wound on the wire wheel (26), and the other end is fixed on the slider (20).

6. A self-draining fire hydrant pressure detector according to claim 1, characterized in that: The detection group comprises a detachably mounted pressure display (12) and a pressure membrane (13) in the detection tube (10). The pressure in the detection tube (10) can be detected by squeezing the pressure membrane (13) to drive the indicator needle in the pressure display (12) to rotate.

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