A nozzle sensitivity testing device

Abstract

The utility model relates to a spray head test technical field, concretely relates to a spray head sensitivity test device, including the box, the temperature sensor is arranged in the box, the box is provided with the door plant, the box is fixedly connected with the support plate in the box, the box is provided with a plurality of water receiving frames, the weighing plate is arranged in the water receiving frame, the pressure sensor is arranged in the weighing plate bottom, the box is provided with a plurality of mounting frames, a plurality of screw pipes are fixedly connected in the mounting frame bottom. In the utility model, the box is provided with conveying pipe no.

Description

Technical Field

[0001] This utility model relates to the field of nozzle testing technology, specifically a nozzle sensitivity testing device. Background Technology

[0002] Fire sprinklers are the end-effectors of automatic sprinkler systems, used to detect fires and automatically spray water to extinguish them when the temperature reaches a set value. Their working principle involves sensing ambient temperature through a thermally sensitive element. For example, a glass bulb filled with a thermally expanding liquid will expand and cause the glass bulb to rupture when the ambient temperature rises to a set threshold, releasing the piston and thus spraying fire water. During the production of fire sprinklers, to verify their sensitivity and reliability, they are typically placed in an oven for heating. However, the oven has a limited space, and each temperature increase requires waiting for the internal temperature to rise evenly, resulting in a relatively low testing rate. Utility Model Content

[0003] The purpose of this invention is to provide a nozzle sensitivity testing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A nozzle sensitivity testing device includes a housing, an interior temperature sensor, a door panel with a handle, a support plate, several water collection frames, a weighing plate, a pressure sensor, and mounting frames. Each mounting frame has a screw-in tube and a fixing plate. An electric heater, a first delivery pipe, and a second delivery pipe are also located inside the housing. A delivery pump is also installed inside the housing. The first and second delivery pipes are connected to the inlet and outlet of the pump, respectively, and are located on the upper and lower sides of the support plate. The water collection frames and mounting frames are divided into two groups: one group of water collection frames is located on the top of the support plate, and the other group is located on the bottom surface of the housing. The two groups of mounting frames are located on the upper and lower sides of the support plate.

[0005] Furthermore, the door panel has an observation slot, and a glass plate is fixedly connected inside the observation slot.

[0006] Furthermore, a partition is provided between two adjacent water receiving frames, and the support plate and the bottom surface of the tank are both fixedly connected to the adjacent partition.

[0007] Furthermore, the mounting frame is provided with a plug-in slot, and a U-shaped rod that is slidably connected to the plug-in slot and fixedly connected to the adjacent partition is provided with the plug-in slot.

[0008] Preferably, the partition is shaped like a convex character.

[0009] Preferably, a number of positioning rods are fixedly connected inside the mounting frame, and a return spring is fixedly connected to each positioning rod. A sliding cylinder is fixedly connected to the bottom end of the return spring, and an abutment rod is fixedly connected to the sliding cylinder.

[0010] Furthermore, the positioning rod is fixedly connected to a connecting cylinder that is slidably connected to the sliding cylinder.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The chamber is equipped with two delivery pipes, and a support plate divides the interior of the chamber into upper and lower sections. The nozzle can be screwed onto the screw-on pipe, and then the mounting frame is inserted into the chamber. After the door is closed, the interior of the chamber can be heated by an electric heater. During heating, the delivery pump can draw air from the top of the support plate through delivery pipe one, and then send the air to the bottom of the support plate through delivery pipe two. This allows the air to circulate inside the chamber, which helps to distribute the heat evenly and to make the interior of the chamber heat up more quickly and evenly, thus improving the efficiency of the test. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a nozzle sensitivity testing device according to this utility model; Figure 2 This is a schematic diagram of the internal structure of the box in this utility model; Figure 3 This is a schematic diagram of the water receiving frame structure in this utility model; Figure 4 This is a schematic diagram of the internal structure of the mounting frame in this utility model.

[0013] In the diagram: 10. Box body; 11. Support plate; 12. Conveying pipe one; 13. Conveying pipe two; 20. Door panel; 21. Observation slot; 22. Handle; 30. Partition plate; 40. Water receiving frame; 41. Weighing plate; 50. U-shaped rod; 60. Mounting frame; 61. Insertion slot; 62. Fixing plate; 63. Positioning rod; 64. Connecting cylinder; 65. Return spring; 66. Sliding cylinder; 67. Abutment rod; 70. Screw-in pipe. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3In this embodiment of the present invention, a nozzle sensitivity testing device includes a housing 10, a temperature sensor installed inside the housing 10, a door panel 20 with a handle 22 fixedly connected to the door panel 20 for easy pulling, an observation slot 21 with a glass plate fixedly connected inside the observation slot 21 for observing the interior of the housing 10, a support plate 11 fixedly connected inside the housing 10, several water collecting frames 40 inside the housing 10, a weighing plate 41 inside the water collecting frames 40, a pressure sensor at the bottom of the weighing plate 41, and several mounting frames 60 inside the housing 10 with several screw-on fasteners fixedly connected to the bottom of the mounting frames 60. The pipe 70 and the mounting frame 60 are fixedly connected to several fixing plates 62. The fixing plates 62 can divide the inside of the mounting frame 60 into several water storage spaces. The tank 10 is equipped with an electric heater. The tank 10 is equipped with a first conveying pipe 12 and a second conveying pipe 13. The tank 10 is equipped with a conveying pump. The first conveying pipe 12 and the second conveying pipe 13 are respectively connected to the air inlet and air outlet of the conveying pump. The first conveying pipe 12 and the second conveying pipe 13 are located on the upper and lower sides of the support plate 11, respectively. Several water receiving frames 40 and several mounting frames 60 are divided into two groups. One group of water receiving frames 40 is located on the top of the support plate 11, and the other group of water receiving frames 40 is located on the bottom surface of the tank 10. The two groups of mounting frames 60 are located on the upper and lower sides of the support plate 11, respectively.

[0016] Specifically, the support plate 11 can divide the interior of the housing 10 into upper and lower sections. The nozzle can be screwed onto the screw-on tube 70, and clean water is placed in the water storage space of the mounting frame 60. Then, the mounting frame 60 is inserted into the housing 10. After the door panel 20 is closed, the interior of the housing 10 can be heated by an electric heater, and the temperature rise inside the housing 10 is detected by multiple temperature sensors within the housing 10. During heating, the delivery pump can draw air from the top of the support plate 11 through delivery pipe one 12, and then send the air to the bottom of the support plate 11 through delivery pipe two 13. The air then flows from 11 and... The air flows upward between the glass plates, causing air to circulate inside the chamber 10. This helps to distribute heat evenly inside the chamber 10, allowing for faster and more uniform heating and reducing waiting time. When the temperature reaches the threshold, the glass bulb of the nozzle will break, causing the nozzle piston to disengage. At this point, water in the mounting frame 60 can gradually flow from the nozzle into the water receiving frame 40. The pressure sensor at the bottom of the weighing plate 41 detects the amount of water falling into the water receiving frame 40, thereby detecting the number of broken glass bulbs on the mounting frame 60 and thus understanding the sensitivity of a batch of nozzles.

[0017] Optionally, a round hole can be provided on the side of the water receiving frame 40, and a plug can be installed inside the round hole. After a test is completed, the plug can be opened to drain the water in the water receiving frame 40. Alternatively, a water pump can be configured, with the water inlet of the water pump connected to a U-shaped pipe. By extending the U-shaped pipe into the water receiving frame 40, the water in the water receiving frame 40 can be pumped out by the water pump.

[0018] Example 1 like Figure 3 As shown, in this embodiment, a partition 30 is provided between two adjacent water receiving frames 40, and the support plate 11 and the bottom surface of the box 10 are both fixedly connected to the adjacent partition 30. The partition 30 is shaped like a convex character.

[0019] In practice, the partition 30 can block the water between two adjacent water receiving frames 40, so as to ensure that the water in the installation frame 60 falls into one water receiving frame 40, which is conducive to ensuring the accuracy of the test. In addition, the width of the top of the partition 30 is smaller than the width of the bottom of the partition 30, so that several partitions 30 located at the top or bottom of the support plate 11 can be interconnected, which facilitates the flow of air inside the box 10.

[0020] like Figure 3 As shown, in this embodiment, the mounting frame 60 has a plug-in slot 61, and the plug-in slot 61 is slidably connected to a U-shaped rod 50 that is fixedly connected to the adjacent partition 30.

[0021] In practice, the U-shaped rod 50 is inserted into the insertion slot 61 to support the mounting frame 60. The mounting frame 60 can be pulled out from the U-shaped rod 50, and the nozzle is screwed onto the bottom of the screw-on tube 70. After adding clean water into the mounting frame 60, the mounting frame 60 is reinserted into the U-shaped rod 50.

[0022] Example 2 Based on Example 1, such as Figure 4 As shown, in this embodiment, a plurality of positioning rods 63 are fixedly connected inside the mounting frame 60. A return spring 65 is fixedly connected to the positioning rod 63. A sliding cylinder 66 is fixedly connected to the bottom end of the return spring 65. An abutment rod 67 is fixedly connected to the sliding cylinder 66. A connecting cylinder 64 is fixedly connected to the positioning rod 63 and is slidably connected to the sliding cylinder 66. The connecting cylinder 64 can restrict the movement direction of the sliding cylinder 66, so that the sliding cylinder 66 and the abutment rod 67 only slide up and down.

[0023] In practice, after the nozzle is screwed onto the bottom of the screw-on tube 70, the abutment rod 67 can be pressed against the piston of the nozzle by the action of the return spring 65. When the temperature inside the housing 10 reaches the threshold and the glass bulb of the nozzle breaks, the sliding cylinder 66 and the abutment rod 67 can be moved downward by the action of the return spring 65, so that the abutment rod 67 pushes out the piston of the nozzle, and the water in the mounting frame 60 can gradually flow out through the nozzle.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nozzle sensitivity testing device, comprising a housing (10), wherein the housing (10) is provided with a door panel (20), and a support plate (11) is fixedly connected inside the housing (10), characterized in that, The box (10) is provided with several water receiving frames (40), and a weighing plate (41) is provided inside the water receiving frame (40). A pressure sensor is provided at the bottom of the weighing plate (41). The box (10) is provided with several mounting frames (60), and several spiral tubes (70) are fixedly connected to the bottom of the mounting frame (60). Several fixing plates (62) are fixedly connected inside the mounting frame (60). An electric heater is provided inside the box (10). A first conveying pipe (12) and a second conveying pipe (13) are provided inside the box (10). A conveying pump is provided inside the box (10). The first conveying pipe (12) and the second conveying pipe (13) are respectively connected to the air inlet and air outlet of the conveying pump.

2. The nozzle sensitivity testing device according to claim 1, characterized in that, The door panel (20) has an observation slot (21), and a glass plate is fixedly connected inside the observation slot (21).

3. The nozzle sensitivity testing device according to claim 1 or 2, characterized in that, A partition (30) is provided between two adjacent water receiving frames (40).

4. The nozzle sensitivity testing device according to claim 3, characterized in that, The mounting frame (60) has a plug-in slot (61), and the plug-in slot (61) is slidably connected to a U-shaped rod (50) that is fixedly connected to the adjacent partition (30).

5. The nozzle sensitivity testing device according to claim 3, characterized in that, The partition (30) is shaped like a convex character.

6. The nozzle sensitivity testing device according to claim 1 or 2, characterized in that, The mounting frame (60) is fixedly connected to a number of positioning rods (63), and the positioning rods (63) are fixedly connected to a return spring (65). The bottom end of the return spring (65) is fixedly connected to a sliding cylinder (66), and the sliding cylinder (66) is fixedly connected to an abutment rod (67).

7. The nozzle sensitivity testing device according to claim 6, characterized in that, The positioning rod (63) is fixedly connected to a connecting cylinder (64) that is slidably connected to the sliding cylinder (66).

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