Nozzle anti-vacuum experiment equipment

Abstract

The utility model relates to the technical field of nozzle experiment equipment, and discloses nozzle anti-vacuum experiment equipment, which comprises a fixed table, a test pipeline, a sealing tank body and a controller, when a nozzle is fixed, the right end of the nozzle is in butt joint and fastening connection with a joint pipe, and a bearing block is rotated, so that the inner layer of the bearing block pushes a supporting mechanism to slide in a limiting plate; the left end of the spray head is firstly in butt joint with a horizontal pipe to be fixed, so that the supporting rod is pulled to slide out of the arch door plate to be separated from the arch door plate, and the supporting rod is manually pulled to move upwards; therefore, the supporting mechanism drives the connector pipe in the connecting block to be in butt joint with the right end of the nozzle, butt joint fixing of different opening positions of the left end and the right end of the nozzle is achieved, inclined butt joint when the left end and the right end of the nozzle are not coaxial is avoided, and the effect of horizontal butt joint of the inclined nozzle is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of nozzle testing equipment, specifically a nozzle anti-vacuum testing device. Background Technology

[0002] The sprinkler head vacuum resistance test equipment mainly consists of a vacuum pump, a vacuum gauge, and test pipelines. The vacuum pump reduces the pressure in the test pipeline to the vacuum level specified by the standard and maintains it for a set time of 1 minute. After the test, the sprinkler head is observed to see if it is twisted or damaged, thus ensuring that the sprinkler head has a certain vacuum resistance strength when spraying in a vacuum to meet the safety requirements of the fire protection system. However, when testing sprinkler heads of different sizes, the connecting pipes at both ends of the sprinkler head are fixed in the same horizontal position. When the left and right ends of the sprinkler head are not on the same axis, the right end of the sprinkler head can connect to a horizontal pipe, but the left end of the sprinkler head cannot connect to a horizontal pipe. Sprinkler heads spraying at an angle cannot be tested for horizontal fixation. Furthermore, when testing sprinkler heads that are longer, the test equipment needs to be changed, and the test equipment cannot adjust the connection position according to the length of the sprinkler head. Utility Model Content

[0003] This invention provides a nozzle anti-vacuum test device, which overcomes the shortcomings described in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A nozzle anti-vacuum test device includes a fixed platform, a test pipe, a sealed tank and a controller. The fixed platform is set on the side of the sealed tank, the test pipe is set on the upper end of the fixed platform and the sealed tank, and the right end of the test pipe is connected to the vacuum pump inside the controller.

[0006] The test pipeline is equipped with a movable mechanism, a flow guide head, a connector pipe, a horizontal pipe, a nozzle, and a sealing plate. The connector pipe is located inside the movable mechanism and is horizontally connected to the nozzle. The sealing plate is fixed to the joint between the left end of the nozzle and the horizontal pipe. The horizontal pipe is located at the outlet end of the flow guide head, and the flow guide head is located at the upper end of the sealed tank. The right end of the connector pipe is connected to a vacuum pump inside the controller. When the vacuum pump draws air, the connector pipe, nozzle, horizontal pipe, and flow guide head are sequentially sealed and connected. Under the pressure of the vacuum pump, the process fluid in the sealed tank is drawn into a vacuum by negative pressure. The movable mechanism moves horizontally, causing the connector pipe to move and press against the nozzle.

[0007] A preferred technical solution: The movable mechanism includes a connecting block, a support plate, and a translation structure. The connector tube is located inside the connecting block. The upper and lower ends of the translation structure are located between the connecting block and the support plate. The translation structure moves horizontally in the middle and pushes the connector tube inside the connecting block to horizontally align with the right end of the nozzle.

[0008] A preferred technical solution: The translation structure is provided with a bearing block, a limiting plate and a supporting mechanism. The limiting plate is set at the upper end of the supporting plate, and the upper end of the supporting mechanism is set at the lower end of the connecting block. The sides of the supporting mechanism rub against each other within the limiting plate. When the bearing block on the side of the supporting mechanism rotates, the bearing block and the supporting plate spirally push each other, and push the supporting mechanism to move within the limiting plate.

[0009] A preferred technical solution: The support mechanism includes a strut, an arch panel, round bars, and a limiting frame. The limiting frame has round bars arranged at equal intervals inside, and the outer side of the arch panel has ball bearings that engage with the round bars. The limiting frame has semi-circular grooves on its left and right sides, and the semi-circular rails inside the semi-circular grooves move horizontally. The strut engages and supports the inner side of the lower end of the arch panel, and presses against the ball bearings and round bars on the outer side of the arch panel. When the strut slides away from the inner side of the arch panel, the arch panel moves upward and causes the ball bearings and round bars to squeeze and move.

[0010] A preferred technical solution: The sealing plate is provided with a rubber plate and a clamping plate. The rubber plate has a sealed hollow structure inside and is attached to the inner side of the clamping plate. The clamping plate has a threaded hole that passes through the rubber plate. The two clamping plates are symmetrically pressed against the joint between the nozzle and the horizontal pipe. They are fixed to the outside of the horizontal pipe by screws through the threaded holes, so that the clamping plates press the rubber plate tightly against the outside of the joint.

[0011] Compared with existing technologies, this technical solution has the following advantages:

[0012] In this invention, when fixing the nozzle, the right end of the nozzle is tightly connected to the connector tube, and the bearing block is rotated, causing the inner layer of the bearing block to push the support mechanism to slide within the limiting plate. This causes the connector tube in the connecting block at the upper end of the support mechanism to move horizontally, pushing the nozzle connected to the left end of the connector tube to move to the left. Therefore, the connection between the left end of the nozzle and the horizontal tube is fastened by the clamping plate thread, and the rubber plate is pressed against the connection for sealing. After the connector tube moves, the bearing block is threaded and fixed inside the support plate, allowing the connector tube to move to the left for connection and support, thus achieving the effect of adjusting the movement according to the length of the nozzle.

[0013] In this invention, the left end of the nozzle is first fixed to the horizontal pipe, thereby pulling the support rod to slide out and detach from the arch panel. It is then manually pulled upwards, causing the ball bearings and round bars on the outer side of the arch panel to press and slide against each other, elastically pressing the two ends of the "U" shape. At this time, the arch panel can move upwards. When the connector pipe in the connecting block at the upper end of the arch panel is connected to the right end of the nozzle in a horizontal state, the support rod is once again engaged on the inner side of the "U" shape of the arch panel. After the arch panel is fixed, the ball bearings and round bars on its outer side are engaged and fixed against each other, thereby causing the support mechanism to drive the connector pipe in the connecting block to connect to the right end of the nozzle. This achieves the connection and fixing of the nozzle with different opening positions on the left and right ends, avoiding tilted connection when the left and right ends of the nozzle are not on the same axis, and achieving the effect of horizontal connection of the tilted nozzle. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is an overall drawing of the present utility model.

[0016] Figure 2 This is a side view of the test pipeline.

[0017] Figure 3 This is a three-dimensional diagram of the event organizer.

[0018] Figure 4 This is a side view of the translation structure.

[0019] Figure 5 This is a plan view of the support mechanism.

[0020] Figure 6 This is a planar schematic diagram of the sealing plate.

[0021] In the diagram: Fixed platform-1, Test pipe-2, Sealed tank-3, Controller-4, Movable mechanism-21, Drain head-22, Connector pipe-23, Horizontal pipe-24, Nozzle-25, Sealing plate-26, Rubber plate-261, Clamping plate-262.

[0022] Connecting block-211, support plate-212, translation structure-213.

[0023] Bearing block-2131, limiting plate-2132, support mechanism-2133.

[0024] Support rod-331, arch panel-332, round bar-333, limit frame-334. Detailed Implementation

[0025] like Figures 1 to 6As shown, this utility model proposes a nozzle anti-vacuum test device, including a fixed platform 1, a test pipe 2, a sealed tank 3 and a controller 4. The fixed platform 1 is set on the side of the sealed tank 3, the test pipe 2 is set on the upper end of the fixed platform 1 and the sealed tank 3, and the right end of the test pipe 2 is connected to the vacuum pump inside the controller 4.

[0026] The test pipeline 2 is equipped with a movable mechanism 21, a flow guide head 22, a connector pipe 23, a horizontal pipe 24, a nozzle 25, and a sealing plate 26. The connector pipe 23 is located inside the movable mechanism 21 and is horizontally connected to the nozzle 25. The sealing plate 26 fixes the left end of the nozzle 25 and the joint of the horizontal pipe 24. The horizontal pipe 24 is located at the outlet end of the flow guide head 22. The flow guide head 22 is located at the upper end of the sealed tank 3. The right end of the connector pipe 23 is connected to the vacuum pump inside the controller 4. When the vacuum pump draws air, the connector pipe 23, nozzle 25, horizontal pipe 24, and flow guide head 22 are sequentially sealed and connected. Under the pressure of the vacuum pump, the process fluid in the sealed tank 3 is drawn under negative pressure to form a vacuum. The movable mechanism 21 moves horizontally, causing the connector pipe 23 to move and press against the nozzle 25.

[0027] Furthermore, the active mechanism 21 is vertically fixed on the fixed platform 1, and the controller 4 is electrically connected to the pressure sensor provided in the sealed tank 3. When the process fluid in the sealed tank 3 is vacuum-drawn into the test pipe 2, a vacuum pressure is formed in the sealed tank 3 and the test pipe 2 to simulate the vacuum pressure test of the nozzle 25 during vacuum jetting.

[0028] The movable mechanism 21 includes a connecting block 211, a support plate 212, and a translation structure 213. The connector pipe 23 is located inside the connecting block 211. The upper and lower ends of the translation structure 213 are located between the connecting block 211 and the support plate 212. The translation structure 213 moves horizontally in the middle and pushes the connector pipe 23 inside the connecting block 211 to horizontally align with the right end of the nozzle 25.

[0029] The translation structure 213 includes a bearing block 2131, a limiting plate 2132, and a support mechanism 2133. The limiting plate 2132 is located on the upper end of the support plate 212, and the upper end of the support mechanism 2133 is located on the lower end of the connecting block 211. The sides of the support mechanism 2133 rub against each other within the limiting plate 2132. When the bearing block 2131 on the side of the support mechanism 2133 rotates, the bearing block 2131 spirals against the support plate 212, thus pushing the support mechanism 2133 to move within the limiting plate 2132.

[0030] Furthermore, the bearing block 2131 is divided into inner and outer layers. The inner layer is connected to the support mechanism 2133, and the outer layer has a threaded structure that moves with the internal thread of the support plate 212. The connecting block 211 has an "L" shaped structure, and the outer layer of the bearing block 2131 moves with the internal thread in the vertical position of the "L" shaped structure.

[0031] The support mechanism 2133 includes a strut 331, an arch panel 332, round bars 333, and a limiting frame 334. The limiting frame 334 has round bars 333 arranged at equal intervals inside, and the outer side of the arch panel 332 has balls that engage with the round bars 333. The limiting frame 334 has semi-circular grooves on its left and right sides, which move horizontally on semi-circular rails inside the 3132. The strut 331 engages and supports the inner side of the lower end of the arch panel 332 and presses against the balls and round bars 333 on the outer side of the arch panel 332. When the strut 331 slides away from the inner side of the arch panel 332, the arch panel 332 moves upward and causes the balls and round bars 333 to squeeze and move.

[0032] Furthermore, the arch panel 332 has a "U" shaped structure and is made of plastic. The two ends of the "U" shaped structure have a flexible effect and are supported and limited by 311. The limiting frame 334 has a rectangular structure. When the arch panel 332 moves within the limiting frame 334, there is an opening at the top of the limiting frame 334 to facilitate the raising and lowering of the arch panel 332. The limiting frame 334 has a groove of the same shape at the corresponding position of the support rod 331 to facilitate the horizontal sliding out of the support rod 331.

[0033] Furthermore, the sealing plate 26 is provided with a rubber plate 261 and a clamping plate 262. The rubber plate 261 has a sealed hollow structure inside, and the rubber plate 261 is attached to the inner side of the clamping plate 262. The clamping plate 262 has a threaded hole that passes through the rubber plate 261. The two clamping plates 262 are symmetrically pressed against the joint between the nozzle 25 and the horizontal pipe 24, and fixed to the outside of the horizontal pipe 24 by screws through the threaded holes, so that the clamping plates 262 press the rubber plate 261 tightly and compress it to the outside of the joint.

[0034] In this invention, the controller 4 controls the internal vacuum pump to extract air and causes the connector pipe 23 at the right end of the test pipe 2 to extract air to the right, so that the nozzle 25, horizontal pipe 24, and guide head 22 draw in the process fluid inside the sealed tank 3, and form a vacuum channel with the guide head 22, horizontal pipe 24, nozzle 25, and connector pipe 23. The controller 4 controls the extraction pressure of the vacuum pump to be fixed, so that the vacuum pressure in the vacuum channel is kept at a fixed value. After maintaining this for a certain period of time, the test pipe 2 is checked for deformation and damage, thereby testing the anti-vacuum effect of the nozzle 25.

[0035] In this invention, before vacuum testing, the nozzle 25 needs to be fixed between the horizontal pipe 24 and the connector pipe 23. When fixing the nozzle 25, the right end of the nozzle 25 is connected to the connector pipe 23 and rotated to make the inner layer of the bearing block 2131 push the support mechanism 2133 to slide within the limiting plate 2132. This causes the connector pipe 23 in the connecting block 211 at the upper end of the support mechanism 2133 to move horizontally, pushing the nozzle 25 connected to the left end of the connector pipe 23 to move to the left. Therefore, the connection between the left end of the nozzle 25 and the horizontal pipe 24 is fastened by the clamping plate 262 and the rubber plate 261 is pressed against the connection for sealing. After the connector pipe 23 moves, the bearing block 2131 is fixed in the support plate 212, allowing the connector pipe 23 to move to the left for connection and support. This prevents the nozzle 25 from bursting under pressure due to excessive pressure, thus achieving the effect of adjusting the movement according to the length of the nozzle 25.

[0036] In this invention, the left end of the nozzle 25 is first fixed to the horizontal pipe 24, thereby pulling the support rod 331 to slide out and disengage inside the arch plate 332. Then, the support rod 322 is manually pulled upward, causing the ball bearings and the round bar 333 on the outer side of the arch plate 332 to press and slide against each other and elastically press the two ends of the "U" shape. At this time, the arch plate 332 can move upward. When the connector pipe 23 in the connecting block 211 at the upper end of the arch plate 332 is connected to the right end of the nozzle 25 in the horizontal state, the support rod 331 is once again engaged on the inner side of the two ends of the "U" shape of the arch plate 332. After the arch plate 332 is fixed, the ball bearings and the round bar 333 on its outer side are engaged and fixed against each other, thereby causing the support mechanism 2133 to drive the connector pipe 23 in the connecting block 211 to connect to the right end of the nozzle 25. This achieves the connection and fixation of the nozzle 25 with different opening positions on the left and right ends, avoiding tilted connection when the left and right ends of the nozzle 25 are not on the same axis, and achieving the effect of horizontal connection of the tilted nozzle 25.

[0037] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A nozzle anti-vacuum testing device, characterized in that, It includes a fixed platform (1), a test pipe (2), a sealed tank (3) and a controller (4). The fixed platform (1) is located on the side of the sealed tank (3). The test pipe (2) is located at the upper end of the fixed platform (1) and the sealed tank (3). The right end of the test pipe (2) is connected to the vacuum pump inside the controller (4). The test pipeline (2) is equipped with a movable mechanism (21), a drain head (22), a connector pipe (23), a horizontal pipe (24), a nozzle (25), and a sealing plate (26). The connector pipe (23) is located inside the movable mechanism (21) and is horizontally connected to the nozzle (25). The sealing plate (26) is fixed at the junction of the left end of the nozzle (25) and the horizontal pipe (24). The horizontal pipe (24) is located at the outlet end of the drain head (22). The drain head (22) is set at the upper end of the sealed tank (3). The right end of the connector pipe (23) is connected to the vacuum pump inside the controller (4). When the vacuum pump draws air, the connector pipe (23), nozzle (25), horizontal pipe (24), and drain head (22) are sequentially sealed and connected. Under the pressure of the vacuum pump, the process fluid in the sealed tank (3) is drawn under negative pressure to form a vacuum. The movable mechanism (21) moves to drive the connector pipe (23) to move horizontally to press against the nozzle (25).

2. The nozzle anti-vacuum test device according to claim 1, characterized in that, The active mechanism (21) is provided with a connecting block (211), a support plate (212), and a translation structure (213). The connector pipe (23) is located inside the connecting block (211). The upper and lower ends of the translation structure (213) are located between the connecting block (211) and the support plate (212). The translation structure (213) moves horizontally in the middle and pushes the connector pipe (23) inside the connecting block (211) to horizontally connect with the right end of the pressure nozzle (25).

3. The nozzle anti-vacuum test device according to claim 2, characterized in that, The translation structure (213) is provided with a bearing block (2131), a limiting plate (2132) and a support mechanism (2133). The limiting plate (2132) is located on the upper end of the support plate (212), and the upper end of the support mechanism (2133) is located on the lower end of the connecting block (211). The side of the support mechanism (2133) rubs against each other in the limiting plate (2132). When the bearing block (2131) on the side of the support mechanism (2133) rotates, the bearing block (2131) and the support plate (212) are spirally pushed, and the support mechanism (2133) is pushed to move in the limiting plate (2132).

4. The nozzle anti-vacuum test device according to claim 3, characterized in that, The support mechanism (2133) is provided with a strut (331), an arch plate (332), round bars (333) and a limiting frame (334). The limiting frame (334) is provided with round bars (333) arranged at equal intervals inside, and the arch plate (332) is provided with balls on the outside that correspond to and engage with the round bars (333). The limiting frame (334) is provided with semi-circular grooves on the left and right sides. The semi-circular grooves move horizontally on the semi-circular rail inside (3132). The strut (331) engages and supports the lower inner side of the arch plate (332) and presses against the balls on the outside of the arch plate (332) to engage with the round bars (333). When the strut (331) slides away from the inside of the arch plate (332), the arch plate (332) moves upward and causes the balls and round bars (333) to squeeze and move.

5. The nozzle anti-vacuum test device according to claim 1, characterized in that, The sealing plate (26) is provided with a rubber plate (261) and a clamping plate (262). The rubber plate (261) has a sealed hollow structure inside and is attached to the inner side of the clamping plate (262). The clamping plate (262) has a threaded hole that passes through the rubber plate (261). The two clamping plates (262) are symmetrically pressed at the joint between the nozzle (25) and the horizontal pipe (24). They are fixed to the outside of the horizontal pipe (24) by screwing the threaded hole, so that the clamping plate (262) presses the rubber plate (261) tightly and compresses it to the outside of the joint.

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