Flange for fire-fighting equipment

Abstract

The present invention discloses a flange for fire-fighting equipment, which relates to the technical field of fire-fighting. The present invention comprises a flange one and a flange two, wherein the flange one is installed on the fire-fighting equipment, a water pipe is installed on the right side of the flange two, a concave ring is fixed on the left side of the flange one, two notches are provided on the left side of the concave ring, a plurality of bolt holes are respectively provided on the sides of the flange one and the flange two away from each other, a concave wide ring is fixed on the right side of the flange two, a spring is fixed on the right side of the inner wall of the concave wide ring, a T-ring is fixed on one end of the spring away from the inner wall of the concave wide ring, the outer wall of the T-ring is in sliding contact with the inner wall of the concave wide ring, and two clamping blocks are fixed on the outer wall of the T-ring, the present invention allows the clamping block to be clamped in the concave ring by rotating on the wall surface of the concave ring, thereby avoiding the problem that the flange one and the flange two are inconvenient to quickly connect due to the cumbersome and complicated installation of each other.

Description

Technical Field

[0001] The present invention relates to the technical field of fire protection, in particular to a flange for fire protection equipment. Background Art

[0002] Flanges used in fire-fighting equipment are components used to connect pipes, valves, pump equipment, etc. In fire-fighting systems, pipe connections are very important. Firefighters need to quickly and stably connect water pipes to water valves to draw water for fire extinguishing, ensuring the sealing and stability between the water pipes and water valves.

[0003] The patent with publication number CN218235708U discloses a flange for fire-fighting equipment, specifically relating to the technical field of flanges for fire-fighting equipment, including a first flange, a second flange provided below the first flange, slots provided inside the first flange and the second flange, a support frame inserted inside the slot, a support rod slidably connected inside the support frame, a slide groove provided on both sides of the support frame and the support rod, a mounting frame slidably connected inside the slide groove, a spring fixedly installed inside the mounting frame, the spring is fixedly connected to the inside of the slide groove, through the set support frame and support rod, the set support rod is toggled so that the support rod can slide and adjust inside the support frame, and when adjusted to the corresponding position, the limit block is inserted into the limit slot inside the support frame, thereby limiting and fixing the support rod, and under the action of the spring, the block can be telescopically adjusted.

[0004] However, the following problems exist in the flanges used in fire-fighting equipment: when the fire-fighting equipment is in use, firefighters need to urgently take water from the fire-fighting equipment. The installation of existing flanges is cumbersome and complicated, which makes it inconvenient to quickly connect the flanges. Therefore, we propose a flange for fire-fighting equipment. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a flange for fire-fighting equipment, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a flange for fire-fighting equipment, comprising flange one and flange two, wherein the flange one is installed on the fire-fighting equipment, a water pipe is installed on the right side of the flange two, a concave ring is fixed on the left side of the flange one, two notches are provided on the left side of the concave ring, a plurality of bolt holes are provided on the sides of the flange one and the flange two away from each other, a concave wide ring is fixed on the right side of the flange two, a spring is fixed on the right side of the inner wall of the concave wide ring, a T-ring is fixed on the end of the spring away from the inner wall of the concave wide ring, the outer wall of the T-ring is in sliding contact with the inner wall of the concave wide ring, two clamping blocks are fixed on the outer wall of the T-ring, a chamfer is provided on the left side of the clamping block, a ring block is fixed on the inner wall of the T-ring, and the The spring on the T-ring starts to stretch, and the T-ring drives the ring block to move right. The ring block moves right on the thin rod, and under the elastic force of the spring, the block is stuck on the wall surface of the concave ring. The block is stuck on the inner wall of the concave ring through rotation, so that the flange one and the flange two are quickly connected.

[0007] According to the above technical solution, the ring block is located on the right side of the spring, the thin rod is located inside the spring, and a gap is provided between the T-ring and the left side of the inner wall of the concave wide ring.

[0008] According to the above technical solution, a limiting device is provided in the middle of the top surface of the concave wide ring, and the limiting device is used to quickly align the bolt holes. A sealing device is provided on the inner wall of the limiting device, and the sealing device is used to seal the gap at the connection.

[0009] According to the above technical solution, the limiting device includes an arc block, which is fixed in the middle of the top surface of the concave wide ring, a circular ring is fixed on the left side of the outer wall of the flange two, an arc support plate is fixed on the bottom of the front of the circular ring, and a semi-arc plate is fixed on the end of the arc support plate away from the circular ring. A round rod passes through and is fixed on the right side of the arc block, and the inner wall of the semi-arc plate is on the motion trajectory of the outer wall of the round rod. The arc block drives the round rod to rotate downward, and the round rod contacts the semi-arc plate during the downward rotation process. Under the restriction of the semi-arc plate, the bolt holes on flange one and flange two are aligned with each other.

[0010] According to the above technical solution, a sliding groove is provided on the outer wall of the circular ring, the arc block is located on the right side of the concave ring, and an arc groove is provided on the left side of the outer wall of the round rod.

[0011] According to the above technical solution, a ring is fixed on the right side of the outer wall of the circular rod, an L-shaped plate is slidably installed on the inner wall of the sliding groove of the circular ring, a hole block is fixed on the top of the L-shaped plate, and the left side of the hole block is on the motion trajectory of the right side of the ring. The ring and the hole block are in contact, the circular rod drives the hole block to rotate downward, the hole block drives the L-shaped plate to rotate downward, and the L-shaped plate rotates downward in the sliding groove of the circular ring.

[0012] According to the above technical solution, the L-shaped plate is located on the right side of the round rod, and the outer wall of the L-shaped plate is in sliding contact with an outer wall of the flange.

[0013] According to the above technical solution, the sealing device includes an arc strip plate 1, which is fixedly mounted on the inner wall of the arc groove of the round rod, and an arc strip plate 2 is provided below the arc strip plate 1, and a rubber strip is fixed on the side of the arc strip plate 1 and the arc strip plate 2 that are close to each other, respectively, and two circular openings are opened on the side of the arc strip plate 1 and the arc strip plate 2 that are close to each other, and two inner screw tubes are fixed on the bottom surface of the arc strip plate 2, and threaded bolts are rotatably mounted on the inner wall of the circular opening of the arc strip plate 1, and the threaded bolts are used to tighten the arc strip plate 1 and the arc strip plate 2, the arc strip plate 1 drives the threaded bolt to rotate downward, the threaded bolt drives the arc strip plate 2 to rotate downward, the arc strip plate 2 drives the inner screw tube to rotate downward, the threaded bolt is twisted, the threaded bolt rotates in the inner screw tube, and the inner screw tube moves forward in the thread groove of the threaded bolt. Under the action of the extrusion force, the rubber strip is tightly against the connection between the concave ring and the concave wide ring.

[0014] According to the above technical solution, the inner spiral tube is located below the circular opening of the second arc strip plate, and the outer wall of the threaded bolt and the inner wall of the inner spiral tube are engaged with each other.

[0015] According to the above technical solution, two circular blocks are fixed on the top surface of the arc strip plate 1, a straight plate is fixed on the inner wall of the circular block, a square plate is fixed on the left end of the straight plate, and the left side of the square plate is fixedly connected to the outer wall of the flange plate 2. The straight plate is used to support the arc strip plate 1, the circular block drives the straight plate to rotate downward, the straight plate drives the square plate to rotate downward, the straight plate supports the circular block, and the circular block supports the arc strip plate 1.

[0016] The present invention provides a flange for fire-fighting equipment. It has the following beneficial effects:

[0017] (1) The present invention cooperates with the connecting block through flange one, concave ring, notch, flange two, bolt hole, concave wide ring, spring, T-ring, clamping block, ring block and thin rod. The clamping block enters the concave ring and rotates flange two downward. The clamping block rotates on the wall surface of the concave ring. Under the action of the extrusion force, the clamping block drives the T-ring to move to the right. The T-ring moves to the right in the concave wide ring. The spring on the T-ring begins to stretch. Under the elastic force of the spring, the clamping block is clamped on the wall surface of the concave ring, so that flange one and flange two can be quickly connected during installation, so that firefighters can quickly and conveniently connect flange one and flange two when taking water, and prevent the cumbersome and complicated installation of flange one and flange two from causing inconvenience in quickly connecting flange one and flange two.

[0018] (2) The present invention uses the setting of the limiting device to make the arc block, the circular ring, the arc support plate and the semi-arc plate cooperate with the round rod. The arc block drives the round rod to rotate downward. During the downward rotation, the round rod contacts the semi-arc plate. Under the restriction of the semi-arc plate, the bolt holes on the flange plate 1 and the flange plate 2 are aligned with each other, preventing the inconvenience of bolt hole alignment from causing inconvenience in bolt installation between the flange plate 1 and the flange plate 2.

[0019] (3) The present invention sets a limit device so that the ring and the L-shaped plate cooperate with the hole block. The ring and the hole block are in contact, the round rod drives the hole block to rotate downward, the hole block drives the L-shaped plate to rotate downward, and the L-shaped plate rotates downward in the sliding groove of the ring, thereby reducing the jitter of the round rod during rotation, so that the round rod will not rub against the concave ring during rotation, and preventing the round rod from rubbing against the concave ring and causing damage to the paint surface of the concave ring.

[0020] (4) The present invention sets up a sealing device so that the arc strip plate 1, the arc strip plate 2, the rubber strip and the inner screw tube cooperate with the threaded bolt. The arc strip plate 1 drives the threaded bolt to rotate downward, the threaded bolt drives the arc strip plate 2 to rotate downward, the arc strip plate 2 drives the inner screw tube to rotate downward, the threaded bolt is twisted, the threaded bolt rotates in the inner screw tube, and the inner screw tube moves forward in the thread groove of the threaded bolt. Under the action of the extrusion force, the rubber strip is tightly pressed against the connection between the concave ring and the concave wide ring, preventing leakage at the connection between the concave ring and the concave wide ring, which causes poor connection between the flanges.

[0021] (5) The present invention sets a sealing device so that the circular block and the straight plate cooperate with the square plate. The circular block drives the straight plate to rotate downward, and the straight plate drives the square plate to rotate downward. The straight plate supports the circular block, and the circular block supports the arc plate 1, so that the arc plate 1 can rotate stably at the flange connection, preventing the arc plate 1 from rotating and getting stuck at the flange connection, causing the installation between the flanges to be not smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the present invention as a whole;

[0023] Figure 2The right side schematic diagram of the present invention as a whole;

[0024] Figure 3 is a schematic diagram of the internal components of the present invention;

[0025] Figure 4 It is a cross-sectional schematic diagram of a flange of the present invention;

[0026] Figure 5 is a schematic diagram of the limiting device of the present invention;

[0027] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of point A in the middle;

[0028] Figure 7 is a schematic diagram of the sealing device of the present invention;

[0029] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point B in the middle.

[0030] In the figure: 1. Flange 1; 2. Concave ring; 3. Notch; 4. Flange 2; 5. Bolt hole; 6. Concave wide ring; 7. Spring; 8. T-ring; 9. Block; 10. Ring block; 11. Thin rod; 12. Connecting block; 13. Limiting device; 131. Arc block; 132. Circular ring; 133. Arc support plate; 134. Semi-arc plate; 135. Round rod; 136. Ring; 137. L-shaped plate; 138. Hole block; 14. Sealing device; 141. Arc strip plate 1; 142. Arc strip plate 2; 143. Rubber strip; 144. Inner screw; 145. Threaded bolt; 146. Round block; 147. Straight plate; 148. Square plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See also Figures 1-8One embodiment of the present invention is: a flange for fire-fighting equipment, including flange 1 and flange 2 4, flange 1 is installed on the fire-fighting equipment, a water pipe is installed on the right side of flange 2 4, a concave ring 2 is fixed on the left side of flange 1, two notches 3 are provided on the left side of the concave ring 2, a plurality of bolt holes 5 are provided on the side away from each other of flange 1 and flange 2 4, a concave wide ring 6 is fixed on the right side of the inner wall of the concave wide ring 6, a spring 7 is fixed on the right side of the inner wall of the spring 7 away from the inner wall of the concave wide ring 6, a T-shaped ring 8 is fixed on the end of the spring 7 away from the inner wall of the concave wide ring 6, and the outer wall of the T-ring 8 is connected to the concave wide ring 6. The inner wall of the ring 6 is in sliding contact, and two clamping blocks 9 are fixed on the outer wall of the T-ring 8. A chamfer is provided on the left side of the clamping block 9. A ring block 10 is fixed on the inner wall of the T-ring 8. A thin rod 11 is slidably installed on the inner wall of the ring block 10. A connecting block 12 is fixed to the left end of the thin rod 11. The outer wall of the connecting block 12 is fixedly connected to the inner wall of the flange 2 4. The ring block 10 is located on the right side of the spring 7, and the thin rod 11 is located inside the spring 7. A gap is provided between the T-ring 8 and the left side of the inner wall of the concave wide ring 6. The clamping block 9 is clamped on the inner wall of the concave ring 2 by rotation, so that the flange 1 and the flange 2 4 can be quickly connected;

[0033] Flange 1 is connected to fire-fighting equipment. Flange 1 supports concave ring 2. Firefighters pick up flange 2 4. Flange 2 4 supports concave wide ring 6. Concave wide ring 6 supports T-ring 8. T-ring 8 supports block 9. Firefighters align block 9 with notch 3 and insert block 9 into notch 3. At this time, block 9 enters concave ring 2. Firefighters rotate flange 2 4 downward. Flange 2 4 drives concave wide ring 6 to rotate downward. Concave wide ring 6 drives spring 7 to rotate downward. Spring 7 drives T-ring 8 to rotate downward. T-ring 8 drives ring block 10 to rotate downward. Concave wide ring 6 drives connecting block 12 to rotate downward. Connecting block 12 drives thin rod 11 to rotate downward. At the same time, block 9 rotates on the wall of concave ring 2. Under the action of extrusion force, block 9 drives The T-ring 8 moves to the right, and the T-ring 8 moves to the right in the concave wide ring 6. The spring 7 on the T-ring 8 begins to stretch, and the T-ring 8 drives the ring block 10 to move to the right. The ring block 10 moves to the right on the thin rod 11. Under the elastic force of the spring 7, the clamping block 9 is clamped on the wall surface of the concave ring 2, and the bolts are installed in the bolt holes 5 to tighten the connection between the flange 1 and the flange 2 4, so that the flange 1 and the flange 2 4 can be quickly connected during installation, allowing firefighters to quickly and conveniently connect the flange 1 and the flange 2 4 when taking water, thereby avoiding the problem that the flanges of the fire-fighting equipment are in use and the flanges 1 and 2 4 are cumbersome and complicated to install each other, which causes the inconvenience of quickly connecting the flanges 1 and 2 4.

[0034] A limiting device 13 is provided in the middle of the top surface of the concave wide ring 6. The limiting device 13 is used to quickly align the bolt holes 5. A sealing device 14 is provided on the inner wall of the limiting device 13. The sealing device 14 is used to seal the gap at the connection.

[0035] Working principle: Flange 1 is connected to fire-fighting equipment, flange 1 supports concave ring 2, flange 2 4 supports concave wide ring 6, concave wide ring 6 supports T-ring 8, T-ring 8 supports block 9, align block 9 with notch 3, insert block 9 into notch 3, block 9 enters concave ring 2, rotate flange 2 4 downward, flange 2 4 drives concave wide ring 6 to rotate downward, concave wide ring 6 drives spring 7 to rotate downward, spring 7 drives T-ring 8 to rotate downward, T-ring 8 drives ring block 10 to rotate downward, concave wide ring 6 drives connecting block 12 to rotate downward, connecting block 12 drives thin rod 11 to rotate downward, block 9 rotates on the wall surface of concave ring 2, under the action of extrusion force, block 9 drives T-ring 8 to move right, T-ring 8 moves right in concave wide ring 6, spring 7 on T-ring 8 begins to stretch, T-ring 8 drives ring block 10 to move right, ring block 10 moves right on thin rod 11.

[0036] See also Figures 1-8 On the basis of the above embodiment, in another embodiment of the present invention, the limiting device 13 includes an arc block 131, which is fixed in the middle of the top surface of the concave wide ring 6, a circular ring 132 is fixed on the left side of the outer wall of the flange 2 4, an arc support plate 133 is fixed on the bottom of the front of the circular ring 132, and a semi-arc plate 134 is fixed on the end of the arc support plate 133 away from the circular ring 132. A round rod 135 passes through and is fixed on the right side of the arc block 131, and the inner wall of the semi-arc plate 134 is on the motion trajectory of the outer wall of the circular rod 135. A sliding groove is provided on the outer wall of the circular ring 132, the arc block 131 is located on the right side of the concave ring 2, and an arc groove is provided on the left side of the outer wall of the circular rod 135. When the flange 2 4 drives the concave wide ring 6 to rotate downward, the concave wide ring 6 drives the arc block 131 to rotate downward, and the arc block 131 drives the round rod 135 to rotate downward. At the same time, the flange 1 supports the circular ring 132, the circular ring 132 supports the arc support plate 133, and the arc support plate 133 supports the semi-arc plate 134. The round rod 135 contacts the semi-arc plate 134 during the downward rotation process. Under the restriction of the semi-arc plate 134, the bolt holes 5 on the flange 1 and the flange 2 4 are aligned with each other, thereby avoiding the inconvenience of aligning the bolt holes 5 when the flange for fire-fighting equipment is in use, which causes the inconvenience of bolt installation between the flange 1 and the flange 2 4.

[0037] A ring 136 is fixed to the right side of the outer wall of the round rod 135, and an L-shaped plate 137 is slidably installed on the inner wall of the slide groove of the ring 132. A hole block 138 is fixed to the top of the L-shaped plate 137. The left side of the hole block 138 is on the motion track on the right side of the ring 136. The L-shaped plate 137 is located on the right side of the round rod 135. The outer wall of the L-shaped plate 137 is in sliding contact with the outer wall of the flange 1. When the block 9 is inserted into the notch 3, the arc block 131 drives the round rod 135 to move to the right, and the round rod 135 drives the ring 136 to move to the right. The round rod 135 moves, and the round rod 135 enters the hole block 138. The ring 136 contacts the hole block 138, and the round rod 135 drives the hole block 138 to rotate downward. The hole block 138 drives the L-shaped plate 137 to rotate downward. The L-shaped plate 137 rotates downward in the slide groove of the circular ring 132, reducing the jitter of the round rod 135 during rotation, so that the round rod 135 will not rub against the concave ring 2 during rotation, thereby avoiding the problem of the round rod 135 rubbing against the concave ring 2 when the flange for fire-fighting equipment is in use, causing damage to the paint surface of the concave ring 2.

[0038] The sealing device 14 includes an arc strip plate 141, which is fixedly mounted on the inner wall of the arc groove of the round rod 135. An arc strip plate 2 142 is provided below the arc strip plate 141. A rubber strip 143 is fixed to the side where the arc strip plate 141 and the arc strip plate 2 142 are close to each other. Two circular openings are respectively provided on the side where the arc strip plate 141 and the arc strip plate 2 142 are close to each other. Two inner screw tubes 144 are fixed to the bottom surface of the arc strip plate 2 142. The inner wall of the circular opening of the arc strip plate 141 is rotatably mounted with a threaded bolt 145. The threaded bolt 145 is used to fasten the arc strip plate 141 and the arc strip plate 2 142. The inner screw tube 144 is located below the circular opening of the arc strip plate 2 142. The outer wall of the threaded bolt 145 is engaged with the inner wall of the inner screw tube 144. When the arc block 131 drives the round rod 135 to rotate downward, the round rod 135 drives arc strip plate 141 to rotate downward, arc strip plate 141 drives rubber strip 143 to rotate downward, arc strip plate 141 drives threaded bolt 145 to rotate downward, threaded bolt 145 drives arc strip plate 2 142 to rotate downward, arc strip plate 2 142 drives another rubber strip 143 to rotate downward, arc strip plate 2 142 drives inner screw tube 144 to rotate downward, firefighters twist threaded bolt 145, threaded bolt 145 rotates in inner screw tube 144, inner screw tube 144 moves forward in the thread groove of threaded bolt 145, under the action of extrusion force, rubber strip 143 presses tightly against the connection between concave ring 2 and concave wide ring 6, seals the connection between concave ring 2 and concave wide ring 6, thereby avoiding the problem of poor connection between flanges caused by leakage at the connection between concave ring 2 and concave wide ring 6 when the flange for fire-fighting equipment is in use.

[0039] Two circular blocks 146 are fixed to the top surface of the arc strip plate 141, and a straight plate 147 is fixed to the inner wall of the circular block 146. A square plate 148 is fixed to the left end of the straight plate 147. The left side of the square plate 148 is fixedly connected to the outer wall of the flange 2 4. The straight plate 147 is used to support the arc strip plate 141. When the arc strip plate 141 drives the rubber strip 143 to rotate downward, the arc strip plate 141 drives the circular block 146 to rotate downward, the circular block 146 drives the straight plate 147 to rotate downward, and the straight plate 147 drives the square plate 148 to rotate downward. The straight plate 147 supports the circular block 146, and the circular block 146 supports the arc strip plate 141, so that the arc strip plate 141 can rotate stably at the flange connection, thereby avoiding the problem of the arc strip plate 141 rotating and getting stuck at the flange connection when the flange of the fire-fighting equipment is in use, causing the installation between the flanges to be not smooth.

[0040] Working principle: The concave wide ring 6 drives the arc block 131 to rotate downward, the flange 1 supports the circular ring 132, the circular ring 132 supports the arc support plate 133, the arc support plate 133 supports the semi-arc plate 134, and the arc block 131 drives the round rod 135 to rotate downward. The round rod 135 contacts the semi-arc plate 134 during the downward rotation process. Under the restriction of the semi-arc plate 134, the bolt holes 5 on the flange 1 and the flange 2 4 are aligned with each other.

[0041] The arc block 131 drives the round rod 135 to move to the right, and the round rod 135 drives the ring 136 to move to the right. The round rod 135 enters the hole block 138, and the ring 136 contacts the hole block 138. The round rod 135 drives the hole block 138 to rotate downward, and the hole block 138 drives the L-shaped plate 137 to rotate downward. The L-shaped plate 137 rotates downward in the slide groove of the ring 132.

[0042] The round rod 135 drives the arc strip plate 141 to rotate downward, the arc strip plate 141 drives the rubber strip 143 to rotate downward, the arc strip plate 141 drives the threaded bolt 145 to rotate downward, the threaded bolt 145 drives the arc strip plate 2 142 to rotate downward, the arc strip plate 2 142 drives another rubber strip 143 to rotate downward, the arc strip plate 2 142 drives the inner screw tube 144 to rotate downward, the threaded bolt 145 is turned, the threaded bolt 145 rotates in the inner screw tube 144, and the inner screw tube 144 moves forward in the thread groove of the threaded bolt 145.

[0043] The arc plate 141 drives the circular block 146 to rotate downward, the circular block 146 drives the straight plate 147 to rotate downward, the straight plate 147 drives the square plate 148 to rotate downward, the straight plate 147 supports the circular block 146, and the circular block 146 supports the arc plate 141.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A flange for fire-fighting equipment, comprising flange one (1) and flange two (4), wherein flange one (1) is mounted on the fire-fighting equipment, and a water pipe is mounted on the right side of flange two (4), characterized in that: A concave ring (2) is fixed on the left side of the flange (1), and two notches (3) are provided on the left side of the concave ring (2). A plurality of bolt holes (5) are provided on the sides of the flange (1) and the flange (4) away from each other. A concave wide ring (6) is fixed on the right side of the flange (4), and a spring (7) is fixed on the right side of the inner wall of the concave wide ring (6). A T-shaped ring (8) is fixed on the end of the spring (7) away from the inner wall of the concave wide ring (6), and the outer wall of the T-shaped ring (8) is in sliding contact with the inner wall of the concave wide ring (6). The outer wall of the T-ring (8) is fixed with two clamping blocks (9), and the left side of the clamping block (9) is provided with a chamfer. The inner wall of the T-ring (8) is fixed with a ring block (10), and a thin rod (11) is slidably mounted on the inner wall of the ring block (10). The left end of the thin rod (11) is fixed with a connecting block (12), and the outer wall of the connecting block (12) is fixedly connected to the inner wall of the second flange (4). The clamping block (9) is clamped on the inner wall of the concave ring (2) by rotation, so that the first flange (1) and the second flange (4) can be quickly connected. A limiting device (13) is provided in the middle of the top surface of the concave wide ring (6), and the limiting device (13) is used for quickly aligning the bolt hole (5); The limiting device (13) includes an arc block (131), the arc block (131) is fixed in the middle of the top surface of the concave wide ring (6), a circular ring (132) is fixed on the left side of the outer wall of the second flange (4), an arc support plate (133) is fixed on the bottom of the front of the circular ring (132), a semi-arc plate (134) is fixed on the end of the arc support plate (133) away from the circular ring (132), a round rod (135) is passed through and fixed on the right side of the arc block (131), and the inner wall of the semi-arc plate (134) is on the movement trajectory of the outer wall of the circular rod (135); The outer wall of the circular ring (132) is provided with a sliding groove, the arc block (131) is located on the right side of the concave ring (2), and the outer wall of the round rod (135) is provided with an arc groove on the left side; A ring (136) is fixed on the right side of the outer wall of the round rod (135), an L-shaped plate (137) is slidably mounted on the inner wall of the chute of the ring (132), a hole block (138) is fixed on the top of the L-shaped plate (137), and the left side of the hole block (138) is located on the motion trajectory of the right side of the ring (136); The ring block (10) is located on the right side of the spring (7), the thin rod (11) is located inside the spring (7), and a gap is provided between the T-shaped ring (8) and the left side of the inner wall of the concave wide ring (6); The inner wall of the limiting device (13) is provided with a sealing device (14), and the sealing device (14) is used to seal the gap at the connection; The L-shaped plate (137) is located on the right side of the round rod (135), and the outer wall of the L-shaped plate (137) is in sliding contact with the outer wall of the flange (1); The sealing device (14) includes an arc strip plate 1 (141), which is fixedly mounted on the inner wall of the arc groove of the round rod (135), and an arc strip plate 2 (142) is provided below the arc strip plate 1 (141), and a rubber strip (143) is fixed on each side of the arc strip plate 1 (141) and the arc strip plate 2 (142) close to each other, and two circular openings are respectively opened on each side of the arc strip plate 1 (141) and the arc strip plate 2 (142) close to each other, and two inner screw tubes (144) are fixed on the bottom surface of the arc strip plate 2 (142), and the inner wall of the circular opening of the arc strip plate 1 (141) is rotatably mounted with a threaded bolt (145), and the threaded bolt (145) is used to fasten the arc strip plate 1 (141) and the arc strip plate 2 (142).

2. A flange for firefighting equipment according to claim 1, characterized in that: The inner spiral tube (144) is located below the circular opening of the second arc strip plate (142), and the outer wall of the threaded bolt (145) and the inner wall of the inner spiral tube (144) are engaged with each other.

3. A flange for firefighting equipment according to claim 2, characterized in that: Two circular blocks (146) are fixed on the top surface of the arc strip plate 1 (141), a straight plate (147) is fixed on the inner wall of the circular block (146), a square plate (148) is fixed on the left end of the straight plate (147), and the left side of the square plate (148) is fixedly connected to the outer wall of the flange plate 2 (4), and the straight plate (147) is used to support the arc strip plate 1 (141).

Images