Half-covering automatic retractable nozzle

Abstract

The utility model discloses a half-covering automatic contraction type nozzle which comprises a mounting flange, a valve body and a valve core, wherein the valve core comprises a movable shaft, a nozzle, a fixed block, a compression spring, a movable block, a sealing gasket and a sealing ring, the top of the movable shaft is provided with a nut, the bottom of the movable shaft is provided with the nozzle, the movable shaft is further provided with the movable block, the fixed block and the compression spring, and the side wall of the nozzle is provided with a fan-shaped water outlet groove. And in a non-working state, the nozzle is flush with the mounting surface, so that the activity of workers is not influenced. When a fire occurs, the spraying system is started, water flow pushes the movable block to move downwards, the compression spring on the movable shaft is compressed, meanwhile, the movable shaft is driven to move downwards, and the water flow is finally sprayed out along the fan-shaped water outlet groove of the nozzle at the bottom of the movable shaft; when the fire disaster is relieved, the system is closed, the compression spring on the movable shaft retracts, and the movable shaft is driven to move upwards to the original position, so that the spray head retracts to the original position, the spray head can adjust the direction of the water outlet angle according to the actual situation, directional spraying is achieved, water sources are saved, and the spraying effect is improved.

Description

Technical Field

[0001] The utility model relates to a semi-covered automatic shrinkage type sprinkler head, belonging to the technical field of fire sprinkler heads. Background Art

[0002] In order to meet the fire protection requirements, large buildings such as factories, commercial buildings, schools and ships are generally equipped with automatic fire protection systems. The sprinkler is an important part of the system. The sprinkler range and water volume determine the fire extinguishing ability of the fire protection system, and its structural form also determines its application scope. Generally, the sprinkler is installed on the top and side walls of the building. In places where the space utilization rate is very high, the installation of the sprinkler occupies a part of the space, reducing the utilization rate of the room.

[0003] At present, the sprinklers used for fire fighting still have the following problems: small spraying range, low water spraying volume, poor fire extinguishing ability; they cannot be automatically retracted when the spraying stops, which affects the appearance; 360° sprinklers are installed in places where all-round spraying is not required, wasting fire fighting water resources. Therefore, the above technical problems need to be solved. Utility Model Content

[0004] The utility model provides a semi-covered automatic retractable sprinkler head, which aims to solve the technical problems that the fire sprinkler head cannot be automatically recovered during use, has poor fire extinguishing ability and wastes water resources.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A semi-covered automatic retractable spray head, comprising a mounting flange, a valve body, and a valve core; characterized in that the valve core comprises a movable shaft, a spray head, a fixed block, a compression spring, a movable block, a sealing pad, and a sealing ring;

[0007] The upper end of the movable shaft 201 is provided with an external thread, and a stepped shaft with a thin top and a thick bottom is formed below the external thread. A cutting plane 207 parallel to the axial direction is provided on the side wall of one side of the shaft body of the stepped shaft, and a boss 208 is formed at the lower end of the cutting plane, and the boss is close to the lower part of the movable shaft; a nozzle 204 is provided on the shaft section below the boss at the bottom of the movable shaft 201, and the nozzle 204 is an annular columnar structure sleeved outside the shaft section, and a chassis is provided at the bottom end thereof and is integrally connected with the bottom end of the movable shaft, and an annular channel is formed between the nozzle and the shaft body, and a fan-shaped water outlet trough 206 is provided on the side wall of the nozzle near the chassis;

[0008] The fixing block 102 is a hollow cylindrical structure with a closed top and an open bottom, and an annular boss 1 is provided on its outer wall. A stepped hole is provided inside the fixing block 102, and a center hole is provided on its top end surface, and fan-shaped hollow holes 107 are provided around the center hole; the center hole 106 is a missing circle with a straight edge corresponding to the cutting plane 1, and the fixing block is slidably connected to the shaft section of the cutting plane 1 on the movable shaft through the center hole and is axially limited by the boss 1; the lower end of the fixing block is slidably connected to the outside of the nozzle, and a limiting flange 209 is provided at the bottom of the nozzle 204 and is blocked by the upper limit of the lower end surface of the fixing block; the nozzle 204 is slidably matched in the expanded hole below the internal step of the fixing block 102, and is limited by the limiting step 108 protruding inward at the upper end of the expanded hole;

[0009] The movable block 203 is a triangular prism structure with a through hole at its center; the movable block is sleeved on the thin shaft section at the upper end of the stepped shaft of the movable shaft through the through hole and is clamped on the shaft step 1 of the stepped shaft;

[0010] The movable shaft 201 is covered with a compression spring 202, and the two ends of the compression spring 202 are respectively connected to the bottom surface of the movable block and the top end surface of the fixed block. A nut is connected to the external thread on the top of the movable shaft 201 to press and fix the movable block on the shaft step 1;

[0011] The valve core is installed in the valve body; the valve body 103 is a hollow cylindrical structure, and an annular boss 2 is provided in the middle of its outer wall. The valve body 103 is provided with a stepped hole inside to form a first chamber, a second chamber and a third chamber from top to bottom, wherein the second chamber is tightened and narrowed inwardly so that the steps at both ends of the chamber constitute an upper limit step for the first chamber and a lower limit step for the third chamber; the movable block 203 is installed in the first chamber and slidably cooperates with the indoor wall and is limited by the upper limit step, and a water passage is left between the movable block and the indoor wall of the first chamber; the fixed block 102 is installed in the third chamber and is limited by the lower limit step, and an annular boss 1 on its outer wall is installed in cooperation with an expansion hole 1 correspondingly arranged in the third chamber; the valve body 103 is provided with external threads on the outer walls of the upper and lower parts of the annular boss 2, and one end of the thread located at the nozzle is threadedly connected to the mounting flange 101, and the other end of the thread is connected to the transition joint 104, and the mounting flange 101 is fixedly mounted on the fixed plate;

[0012] The transition joint 104 is connected to the water pipe 401 through the water pipe joint 402;

[0013] The middle part of the mounting flange 101 is a basin-shaped body and an inlet and outlet hole is provided at the bottom of the basin-shaped body. The basin-shaped body of the mounting flange is embedded in the through hole of the fixing plate, and the outer edge of the annular flange is connected to the surface of the fixing plate. The lower end of the valve body is screwed into the basin of the flange through a threaded connection, and the lower end of the annular boss of the fixing block is fixed on the mounting flange; the bottom end of the fixing block is inserted into the inlet and outlet hole, and the nozzle moves in and out of the inlet and outlet hole up and down;

[0014] Water flows from the water pipe, enters the first chamber of the valve body through the inner hole of the transition joint, enters the second chamber from the water passage, enters the internal stepped hole of the fixed block 102 from the fan-shaped hollow hole, and finally enters the annular channel of the nozzle, and is sprayed out from the fan-shaped water outlet groove 206 of the nozzle.

[0015] The semi-covered automatic retractable sprinkler, wherein the transition joint 104 is a stepped columnar structure, hollow inside, and the bottom inner wall and top outer wall of the transition joint 104 are both provided with threads; the top outer wall of the transition joint 104 is threadedly connected to the water pipe joint 402.

[0016] The semi-covered automatic retractable sprinkler is provided with sealing gaskets 301 between the mounting flange 101 and the fixed plate surface and the bottom surface of the fixed block, between the transition joint 104 and the upper end surface of the valve body and between the outlet pipe 401.

[0017] In the semi-covered automatic retractable nozzle, grooves are provided on both end faces of the valve body 103, and sealing rings 302 are provided in the grooves.

[0018] Beneficial effects of the utility model:

[0019] The utility model can be arranged anywhere in the top, side wall and floor of a building, and can also be installed on the deck and superstructure of a ship. When not in operation, the nozzle is flush with the fixed plate and does not affect the activities of the staff. When a fire occurs, the fire fighting system is started, the water outlet pipe starts to supply water, the water flows through the transition joint into the first chamber of the valve body and pushes the movable block to move downward, the compression spring on the movable shaft is compressed, and at the same time drives the movable shaft to move downward, and the nozzle extends out of the fixed plate; the water flows through the gap between the first chamber and the movable block through the second chamber and the third chamber, and finally enters the annular channel formed by the shaft body of the movable shaft and the nozzle and sprays out from the water outlet trough to extinguish the fire source. After the fire is extinguished, the system is closed, and when the water supply pressure is reduced to the closing pressure, the compression spring on the movable shaft retracts, driving the movable shaft to move upward to the original position, so that the nozzle is retracted to the original position. The nozzle can adjust the direction of the water outlet angle according to the actual situation, spray in a directional manner, save water resources, and improve the spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of the overall structure of the utility model when it is not in operation.

[0021] Figure 2 It is a cross-sectional schematic diagram of the overall structure of the utility model in working state.

[0022] Figure 3 This is a schematic sectional view of the overall structure of the utility model taken along the AA plane when the utility model is in working state.

[0023] Figure 4 It is a top view schematic diagram of the movable block of the utility model.

[0024] Figure 5 It is a BB-surface cross-sectional schematic diagram of the movable block of the utility model.

[0025] Figure 6 It is a side sectional schematic diagram of the movable shaft of the utility model.

[0026] Figure 7 It is a CC-plane cross-sectional schematic diagram of the movable shaft of the utility model.

[0027] Figure 8 It is a schematic cross-sectional view of the DD surface of the movable shaft of the utility model.

[0028] Fig. 9 This is a schematic cross-sectional view of the EE surface of the movable shaft of the utility model.

[0029] Fig.10 It is a top view schematic diagram of the fixing block of the utility model.

[0030] Fig.11 This is a schematic cross-sectional view of the FF surface of the fixing block of the utility model.

[0031] Fig.12 It is a schematic diagram of the compression spring of the utility model and its pressure change.

[0032] Description of the accompanying drawings: mounting flange 101, fixing block 102, valve body 103, transition joint 104, bolt 105, center hole 106, fan-shaped hollow hole 107, limiting step 108;

[0033] Active shaft 201, compression spring 202, active block 203, nozzle 204, nut 205, water outlet trough 206; cutting plane 1 207, boss 1 208, limiting flange 209;

[0034] Sealing pad 301, sealing ring 302, water outlet pipe 401, water pipe joint 402 DETAILED DESCRIPTION

[0035] The specific structure and implementation methods of the utility model are described in detail below with reference to the accompanying drawings.

[0036] See also Figure 1 , 3 -8, a semi-covered automatic retractable sprinkler of the utility model comprises a mounting flange, a valve body, and a valve core; the valve core comprises a movable shaft, a sprinkler, a fixed block, a compression spring, a movable block, a sealing gasket and a sealing ring;

[0037] See also Figure 6 As shown, the upper end of the movable shaft 201 is provided with an external thread, and a stepped shaft with a thin top and a thick bottom is provided below the external thread. A cutting plane 207 parallel to the axial direction is provided on the side wall of one side of the shaft body of the stepped shaft, and a boss 208 is formed at the lower end of the cutting plane, and the boss is close to the lower part of the movable shaft; a nozzle 204 is provided on the shaft section below the boss at the bottom of the movable shaft 201, and the nozzle 204 is an annular columnar structure sleeved outside the shaft section, and a chassis is provided at the bottom end thereof and is integrally connected to the bottom end of the movable shaft, and an annular channel is formed between the nozzle and the shaft body, and a fan-shaped water outlet trough 206 is provided on the side wall of the nozzle near the chassis;

[0038] See also Fig.10 , 11 As shown, the fixed block 102 is a hollow cylindrical structure with a closed top and an open bottom, and an annular boss 1 is provided on its outer wall. A stepped hole is provided inside the fixed block 102, and a center hole is provided on its top end face, and fan-shaped hollow holes 107 are provided around the center hole; the center hole 106 is a missing circle with a straight edge corresponding to the cutting plane 1, and the fixed block is slidably connected to the shaft segment of the cutting plane 1 on the movable shaft through the center hole and is axially limited by the boss 1; the lower end of the fixed block is slidably connected to the outside of the nozzle, and a limiting flange 209 is provided at the bottom of the nozzle 204 and is blocked by the upper limit of the lower end face of the fixed block; the nozzle 204 is slidably matched in the expanded hole below the internal step of the fixed block 102, and is limited by the limiting step 108 protruding inward at the upper end of the expanded hole;

[0039] See also Figure 3 , 4 As shown in FIG. 5 , the movable block 203 is a triangular prism structure with a through hole at its center; the movable block is sleeved on the thin shaft section at the upper end of the stepped shaft of the movable shaft through the through hole and is clamped on the shaft step 1 of the stepped shaft;

[0040] The movable shaft 201 is covered with a compression spring 202, and the two ends of the compression spring 202 are respectively connected to the bottom surface of the movable block and the top end surface of the fixed block. A nut is connected to the external thread on the top of the movable shaft 201 to press and fix the movable block on the shaft step 1;

[0041] The valve core is installed in the valve body; the valve body 103 is a hollow cylindrical structure, and an annular boss 2 is provided in the middle of its outer wall. The valve body 103 is provided with a stepped hole inside to form a first chamber, a second chamber and a third chamber from top to bottom, wherein the second chamber is tightened and narrowed inwardly so that the steps at both ends of the chamber constitute an upper limit step for the first chamber and a lower limit step for the third chamber; the movable block 203 is installed in the first chamber and slides in the upper and lower directions with the indoor wall and is limited by the upper limit step, and a water passage is left between the movable block and the indoor wall of the first chamber; the fixed block 102 is installed in the third chamber and is limited by the lower limit step, and an annular boss 1 on its outer wall is installed in cooperation with an expansion hole 1 correspondingly arranged in the third chamber; the valve body 103 is provided with external threads on the outer walls of the upper and lower parts of the annular boss 2, and one end of the thread located at the nozzle is threadedly connected to the mounting flange 101, and the other end of the thread is connected to the transition joint 104, and the mounting flange 101 is fixedly mounted on the fixed plate;

[0042] The transition joint 104 is connected to the water pipe 401 through the water pipe joint 402;

[0043] The middle part of the mounting flange 101 is a basin-shaped body and an inlet and outlet hole is provided at the bottom of the basin-shaped body. The basin-shaped body of the mounting flange is embedded in the through hole of the fixing plate, and the outer edge of the annular flange is connected to the surface of the fixing plate. The lower end of the valve body is screwed into the basin of the flange through a threaded connection, and the lower end of the annular boss of the fixing block is fixed on the mounting flange; the bottom end of the fixing block is inserted into the inlet and outlet hole, and the nozzle moves in and out of the inlet and outlet hole up and down;

[0044] See also Figure 2 As shown, water flows from the water pipe, enters the first chamber of the valve body through the inner hole of the transition joint, enters the second chamber from the water passage, enters the internal stepped hole of the fixed block 102 from the fan-shaped hollow hole, and finally enters the annular channel of the nozzle, and is sprayed out from the fan-shaped water outlet groove 206 of the nozzle.

[0045] The semi-covered automatic retractable sprinkler, wherein the transition joint 104 is a stepped columnar structure, which is hollow inside, and the bottom inner wall and top outer wall of the transition joint 104 are both provided with threads; the top outer wall of the transition joint 104 is threadedly connected to the water pipe joint 402, and the bottom is connected to the valve body.

[0046] The semi-covered automatic retractable sprinkler is provided with sealing gaskets 301 between the mounting flange 101 and the fixed plate surface and the bottom surface of the fixed block, between the transition joint 104 and the upper end surface of the valve body and between the outlet pipe 401.

[0047] In the semi-covered automatic retractable nozzle, grooves are provided on both end faces of the valve body 103, and sealing rings 302 are provided in the grooves.

[0048] The specific implementation methods of the utility model are further described in detail below:

[0049] See also Figure 1 and Figure 5 The nut installed on the top of the movable shaft and the shaft step 1 set on the upper part of the movable shaft are used to fix the movable block. The fixed block is axially limited and immovable. When the fire is relieved, the movable shaft moves upward under the action of the spring, and the boss 1 set at the lower part of the movable shaft contacts the bottom surface of the center hole of the fixed block, limiting the movable shaft from moving further upward. At this time, the bottom surface of the sprinkler is flush with the fixed plate and is hidden in the same plane.

[0050] See also Figure 5-6 A nozzle is arranged at the bottom of the movable shaft. The nozzle is an annular columnar structure, and a fan-shaped water outlet groove is arranged on the side wall of the nozzle and is parallel to the mounting surface.

[0051] See also Figure 1 , 7 -8. The center hole on the fixed block is provided with a positioning surface, which can prevent the movable shaft and the fixed block from rotating relative to each other when they are connected. A nut is installed on the top of the movable shaft, and the nut can be rotated by a tool to adjust the direction of the nozzle outlet.

[0052] See also Figure 2 When a fire occurs, the fire fighting system is started, the water outlet pipe starts to supply water, the water flows into the first chamber of the valve body through the transition joint and pushes the movable block to move downward, the compression spring on the movable shaft is compressed, and at the same time drives the movable shaft to move downward, the water flows from the gap between the first chamber and the movable block through the second chamber and the third chamber, and finally enters the annular channel formed by the movable shaft body and the sprinkler head and is sprayed out from the water outlet trough to extinguish the fire source.

[0053] Example

[0054] See also Figure 1 , 2 , a semi-covered automatic retractable sprinkler, comprising a mounting flange, a valve body, and a valve core; the valve core comprises a movable shaft, a sprinkler, a fixed block, a compression spring, a movable block, a sealing pad, and a sealing ring;

[0055] See also Figure 5-7 As shown, a nozzle is provided at the bottom of the movable shaft. The nozzle is an annular columnar structure. A water outlet groove is provided on the side wall of the nozzle, which is parallel to the mounting surface, has an angle of 180°, and a groove width of 1.9 mm.

[0056] When a fire occurs, open the pipeline valve, water flows in from the transition joint end, the water flow pushes the movable block downward, the compression spring is compressed, and the movable shaft is driven to move at the same time. The water flows through the fixed block and finally sprays out along the fan-shaped water outlet groove of the nozzle at the bottom of the movable shaft, forming a 180° water curtain, which sprays on the fire scene and plays a role in extinguishing the fire. When the seawater pressure in the pipeline is 0.5MPa, the flow rate is 4m 3 / h, the diameter of the spray water curtain is 7m. After the fire is lifted, the water inlet valve of the pipeline is closed, the pressure in the pipeline is reduced, the movable shaft retracts to its original position by the rebound force of the compression spring, the bottom surface of the nozzle and the fixed plate are in the same plane and hidden, and the spraying ends.

Claims

1. A semi-covered automatic retractable sprinkler head, comprising a mounting flange, a valve body, and a valve core; characterized in that: The valve core includes a movable shaft, a nozzle, a fixed block, a compression spring, a movable block, a sealing gasket and a sealing ring; The upper end of the movable shaft (201) is provided with an external thread, and a stepped shaft with a thin top and a thick bottom is formed below the external thread. A cutting plane (207) parallel to the axial direction is provided on the side wall of one side of the shaft body of the stepped shaft, and a boss (208) is formed at the lower end of the cutting plane, and the boss is close to the lower part of the movable shaft; a nozzle (204) is provided on the shaft section below the boss at the bottom of the movable shaft (201), and the nozzle (204) is an annular columnar structure sleeved outside the shaft section, and a bottom end thereof is provided with a chassis and is integrally connected to the bottom end of the movable shaft, and an annular channel is formed between the nozzle and the shaft body, and a fan-shaped water outlet groove (206) is provided on the side wall of the nozzle close to the chassis; The fixing block (102) is a hollow cylindrical structure with a closed top and an open bottom, and an annular boss is provided on its outer wall. A stepped hole is provided inside the fixing block (102), and a center hole (106) is provided on the top end surface, and fan-shaped hollow holes (107) are provided around the center hole; the center hole (106) is a missing circle with a straight edge corresponding to the cutting plane, and the fixing block is slidably connected to the shaft section of the cutting plane on the movable shaft through the center hole and is axially limited by the boss; the lower end of the fixing block is slidably connected to the outside of the nozzle, and a limiting flange (209) is provided at the bottom of the nozzle (204) and is blocked by the upper limit of the lower end surface of the fixing block; the nozzle (204) is slidably fitted in the expanded hole below the internal step of the fixing block (102) and is limited by a limiting step (108) protruding inward at the upper end of the expanded hole; The movable block (203) is a triangular column structure with a through hole at its center; the movable block is sleeved on the thin shaft section at the upper end of the stepped shaft of the movable shaft through the through hole and is clamped on the shaft step 1 of the stepped shaft; A compression spring (202) is sleeved on the movable shaft (201), and the two ends of the compression spring (202) are respectively connected to the bottom surface of the movable block and the top end surface of the fixed block. A nut is connected to the external thread on the top of the movable shaft (201) and presses and fixes the movable block on the shaft step 1. The valve core is installed in the valve body; the valve body (103) is a hollow cylindrical structure, and two annular bosses are provided in the middle of its outer wall. The valve body (103) is provided with stepped holes inside to form a first chamber, a second chamber and a third chamber from top to bottom, wherein the second chamber is tightened and narrowed inwardly so that the steps at both ends of the chamber form an upper limit step for the first chamber and a lower limit step for the third chamber; the movable block (203) is installed in the first chamber and slides with the inner wall of the chamber and is limited by the upper limit step, and the movable block is in contact with the first chamber. A water passage is left between the inner walls of the chamber; the fixing block (102) is installed in the third chamber and abuts against the lower limit step, and the annular boss 1 on its outer wall is matched with the expansion hole 1 correspondingly arranged in the third chamber; the valve body (103) is provided with external threads on the outer walls of the upper and lower parts of the annular boss 2, and one end of the thread located at the nozzle is threadedly connected to the mounting flange (101), and the other end is threadedly connected to the transition joint (104), and the mounting flange (101) is fixedly installed on the fixing plate; The transition joint (104) is connected to the water pipe (401) via a water pipe joint (402); The middle part of the mounting flange (101) is a basin-shaped body and an inlet and outlet hole is arranged at the bottom of the basin-shaped body. The basin-shaped body of the mounting flange is embedded in the through hole of the fixing plate, and the outer edge of the annular flange is connected to the surface of the fixing plate. The lower end of the valve body is screwed into the basin of the flange through a threaded connection, and the lower end of the annular boss of the fixing block is fixed on the mounting flange; the bottom end of the fixing block is inserted into the inlet and outlet hole, and the nozzle moves in and out of the inlet and outlet hole. Water is introduced from the water pipe, enters the first chamber of the valve body through the inner hole of the transition joint, enters the second chamber from the water passage, enters the internal stepped hole of the fixed block (102) from the fan-shaped hollow hole, and finally enters the annular channel of the nozzle, and is sprayed out from the fan-shaped water outlet groove (206) of the nozzle.

2. A semi-covered automatic retractable nozzle as claimed in claim 1, characterized in that: The transition joint (104) is a stepped columnar structure with a hollow interior. The bottom inner wall and the top outer wall of the transition joint (104) are both provided with threads. The top outer wall of the transition joint (104) is threadedly connected to the water pipe joint (402).

3. A semi-covered automatic retractable nozzle as claimed in claim 2, characterized in that: Sealing pads (301) are provided between the mounting flange (101) and the surface of the fixing plate and between the bottom surface of the fixing block, between the transition joint (104) and the upper end surface of the valve body and between the transition joint (104) and the outlet pipe (401).

4. A semi-covered automatic retractable nozzle as claimed in claim 3, characterized in that: The end surfaces at both ends of the valve body (103) are provided with grooves, and sealing rings (302) are provided in the grooves.

Images