Pneumatic control fire hydrant pressure test device

Abstract

A pneumatic control fire hydrant pressure test device comprises a test bench, a positioning piece arranged on the test bench and a fire hydrant arranged on the positioning piece, and a plurality of movable clamping assemblies are arranged on the test bench; the movable clamping assembly comprises an air cylinder and a sliding rail which are fixed on the test bed, a connecting assembly connected with the execution end of the air cylinder, a sliding block connected with the connecting assembly and a movable pressing block, and the bottom of the movable pressing block penetrates through the test bed and is rotationally connected with a supporting plate at the bottom of the test bed; a pull ring is rotationally arranged on the sliding block, the other end of the pull ring is in sliding connection with the top of the movable pressing block, and when the executing end of the air cylinder is pushed outwards, the connecting assembly, the sliding block and the movable pressing block are sequentially driven to be close to the fire hydrant, so that the top of the movable pressing block presses a flange plate of the fire hydrant. According to the utility model, the plurality of air cylinders are uniformly controlled by the same controller, synchronously pushed out or synchronously retracted, and correspondingly drive the plurality of movable pressing blocks to simultaneously open or simultaneously press flange plates of fire hydrants, so that the pressure test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire hydrants, in particular to a pneumatically controlled fire hydrant pressure testing device. Background Art

[0002] Fire hydrants are fixed fire-fighting facilities that control combustibles, isolate combustion-supporting materials, and eliminate ignition sources. After the production of fire hydrants is completed, a water pressure sealing test is required to ensure product quality. When conducting a water pressure sealing test on a fire hydrant, the fire hydrant is first installed on a pressure test device, and then the fire hydrant is fixed using a hydraulic jack or a cylinder control fixture. This method is slow and results in low pressure test efficiency. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a pneumatically controlled fire hydrant pressure test device to improve the pressure test efficiency.

[0004] A pneumatically controlled fire hydrant pressure test device comprises a test bench, a positioning member arranged on the test bench, and a fire hydrant arranged on the positioning member, wherein the test bench is provided with a plurality of movable clamping assemblies, and the plurality of movable clamping assemblies are arranged in a circumferential array around the fire hydrant;

[0005] The movable clamping assembly includes a cylinder and a slide rail fixed on the test bench, a connecting assembly connected to the execution end of the cylinder, a sliding block connected to the connecting assembly and sliding on the slide rail, and a movable pressing block, the bottom of which passes through the test bench and is rotatably connected to a support plate at the bottom of the test bench;

[0006] A pull ring is rotatably provided on the slider, and the other end of the pull ring is slidably connected to the top of the movable pressure block. When the actuator end of the cylinder is pushed outward, the connecting assembly, the slider and the movable pressure block are driven in sequence to approach the fire hydrant, so that the top of the movable pressure block presses the flange of the fire hydrant.

[0007] Compared with the prior art, in the utility model, multiple cylinders are uniformly controlled by the same controller and are pushed out or retracted synchronously, correspondingly driving multiple movable pressure blocks to simultaneously open or simultaneously press the flange of the fire hydrant, thereby improving the pressure test efficiency.

[0008] Further, the connection assembly includes a mounting block, and a ball adjustment block embedded in the mounting block;

[0009] One end of the ball adjustment block is connected to the execution end of the cylinder through a first connecting rod passing through the mounting block, and the other end is connected to the slider through a second connecting rod passing through the mounting block.

[0010] Furthermore, the mounting block includes a first block and a second block connected by bolts, the first block is arranged close to the sliding block, and the spherical adjustment block protrudes from the surface of the first block.

[0011] Furthermore, a connecting hole is provided at one end of the pull ring, and a long hole is provided at the other end. The connecting hole is rotatably connected to the slider via a first rotating shaft, and the long hole is slidably connected to the top of the movable pressing block via a second rotating shaft.

[0012] Furthermore, the movable pressure block is in an inverted L shape, and when the pressure test is carried out, the L end presses the flange of the fire hydrant.

[0013] Furthermore, a waterproof rubber pad is provided between the positioning piece and the fire hydrant. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the pneumatically controlled fire hydrant pressure testing device in the utility model;

[0015] Figure 2 for Figure 1 Exploded view of the pneumatically controlled fire hydrant pressure test device;

[0016] Figure 3 for Figure 1 Schematic cross-sectional view of the pneumatically controlled fire hydrant pressure test device.

[0017] Description of main component symbols:

[0018]

[0019]

[0020] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] See also Figures 1 to 3 , a pneumatically controlled fire hydrant pressure test device provided in one embodiment of the utility model comprises a test bench 10, a positioning member 11 arranged on the test bench 10, and a fire hydrant 12 arranged on the positioning member 11, wherein a plurality of movable clamping assemblies 13 are arranged in a circular array around the fire hydrant 12 on the test bench 10;

[0023] The movable clamping assembly 13 includes a cylinder 131 and a slide rail 132 fixed on the test bench 10, a connecting assembly 133 connected to the execution end of the cylinder 131, a slider 134 connected to the connecting assembly 133 and sliding on the slide rail 132, and a movable pressing block 135, the bottom of which passes through the test bench 10 and is rotatably connected to a support plate at the bottom of the test bench 10;

[0024] A pull ring 136 is rotatably provided on the slider 134 , and the other end of the pull ring 136 is slidably connected to the top of the movable pressing block 135 .

[0025] It should be noted that in the present invention, multiple cylinders 131 are uniformly controlled by the same controller, and are pushed out or retracted synchronously, correspondingly driving multiple movable pressure blocks 135 to simultaneously open or simultaneously press the flange of the fire hydrant 12. Specifically, when the pressure test is performed, when the actuator end of the cylinder 131 is pushed outward, it sequentially drives the connecting assembly 133, the slider 134 and the movable pressure block 135 close to the fire hydrant 12, so that the top of the movable pressure block 135 presses the flange of the fire hydrant 12; when the pressure test is completed, the actuator end of the cylinder 131 retracts inward, sequentially driving the connecting assembly 133, the slider 134 and the movable pressure block 135 away from the fire hydrant 12, so that the top of the movable pressure block 135 is separated from the flange of the fire hydrant 12, and then the fire hydrant 12 after the pressure test is removed, so that the fire hydrant 12 to be tested can be pressure tested.

[0026] See also Figures 1 to 3 , the connecting assembly 133 includes a mounting block 1331, and a ball adjustment block 1332 embedded in the mounting block 1331;

[0027] One end of the ball adjustment block 1332 passes through the mounting block 1331 via a first connecting rod 1333 and is connected to the execution end of the cylinder 131 , and the other end of the ball adjustment block 1332 passes through the mounting block 1331 and is connected to the slider 134 via a second connecting rod 1334 .

[0028] It should be noted that, in the present application, the function of the ball adjustment block 1332 is to automatically adjust and eliminate the obstruction caused by the slider 134 being non-parallel when the cylinder 131 is pushed out or retracted.

[0029] See also Figure 2 and Figure 3In a preferred embodiment of the present application, the mounting block 1331 includes a first block 13311 and a second block 13312 connected by bolts, the first block 13311 is arranged close to the slider 134, and the ball adjustment block 1332 protrudes from the surface of the first block 13311. Ball grooves are respectively provided inside the first block 13311 and the second block 13312 to facilitate the installation of the ball adjustment block 1332.

[0030] See also Figure 2 and Figure 3 In another preferred embodiment of the present application, a connecting hole is provided at one end of the pull ring 136, and a long hole is provided at the other end. The connecting hole is rotatably connected to the slider 134 through a first rotating shaft, and the long hole is slidably connected to the top of the movable pressure block 135 through a second rotating shaft.

[0031] It should be noted that when the pressure test is carried out, the second rotating shaft is located at one end of the elongated hole close to the cylinder 131, so as to push the movable pressure block 135 to press the flange of the fire hydrant 112. When the pressure test is completed, the second rotating shaft is located at one end of the elongated hole close to the fire hydrant 12, so as to pull the movable pressure block 135 away from the flange of the fire hydrant 12.

[0032] See also Figure 2 and Figure 3 In a preferred embodiment of the present application, the movable pressure block 135 is in an inverted L-shape. When the pressure test is performed, the L end presses the flange of the fire hydrant 12, thereby pressing and fixing the fire hydrant 12.

[0033] See also Figure 2 and Figure 3 In another preferred embodiment of the present application, a waterproof rubber pad 14 is provided between the positioning member 11 and the fire hydrant 12, and the sealing performance is enhanced by the waterproof rubber pad 12.

[0034] See also Figure 2 and Figure 3 A pressure test water inlet pipe 15 is provided at the bottom of the test bench 10, and the pressure test water inlet pipe 15 is connected with the positioning member 11 and the fire hydrant 12 in sequence to facilitate water delivery during the pressure test.

[0035] In summary, in the present invention, multiple cylinders 131 are uniformly controlled by the same controller, and are pushed out or retracted synchronously, correspondingly driving multiple movable pressure blocks 15 to simultaneously open or simultaneously press the flange of the fire hydrant 12, thereby improving the pressure test efficiency, so as to facilitate large-scale pressure test inspections. At the same time, the entire device is easy to operate, can be pressed and released with one button, is safe and reliable, and the pressing force can withstand the 2.4MPa static pressure required for the fire hydrant pressure test.

[0036] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The above-mentioned embodiments only express several implementation methods of the utility model, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several deformations and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pneumatically controlled fire hydrant pressure test device, comprising a test bench, a positioning member disposed on the test bench, and a fire hydrant disposed on the positioning member, characterized in that: The test bench is provided with a plurality of movable clamping assemblies, and the plurality of movable clamping assemblies are arranged in a circular array around the fire hydrant; The movable clamping assembly includes a cylinder and a slide rail fixed on the test bench, a connecting assembly connected to the execution end of the cylinder, a sliding block connected to the connecting assembly and sliding on the slide rail, and a movable pressing block, the bottom of which passes through the test bench and is rotatably connected to a support plate at the bottom of the test bench; A pull ring is rotatably provided on the slider, and the other end of the pull ring is slidably connected to the top of the movable pressure block. When the actuator end of the cylinder is pushed outward, the connecting assembly, the slider and the movable pressure block are driven in sequence to approach the fire hydrant, so that the top of the movable pressure block presses the flange of the fire hydrant.

2. The pneumatically controlled fire hydrant pressure testing device according to claim 1, characterized in that: The connecting assembly includes a mounting block and a spherical adjusting block embedded in the mounting block; One end of the ball adjustment block is connected to the execution end of the cylinder through a first connecting rod passing through the mounting block, and the other end is connected to the slider through a second connecting rod passing through the mounting block.

3. The pneumatically controlled fire hydrant pressure testing device according to claim 2, characterized in that: The mounting block comprises a first block and a second block connected by bolts, the first block is arranged close to the slider, and the spherical adjustment block protrudes from the surface of the first block.

4. The pneumatically controlled fire hydrant pressure testing device according to claim 1, characterized in that: One end of the pull ring is provided with a connecting hole, and the other end is provided with a long hole. The connecting hole is rotatably connected to the slider through a first rotating shaft, and the long hole is slidably connected to the top of the movable pressing block through a second rotating shaft.

5. The pneumatically controlled fire hydrant pressure testing device according to claim 1, characterized in that: The movable pressure block is in an inverted L shape, and when the pressure test is carried out, the L end presses the flange of the fire hydrant.

6. The pneumatically controlled fire hydrant pressure testing device according to any one of claims 1 to 5, characterized in that: A waterproof rubber pad is provided between the positioning piece and the fire hydrant.

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