Pressure reduction type fire hydrant device

Abstract

The utility model provides a pressure reduction type fire hydrant device which comprises a fire hydrant body, a water outlet pipe is arranged on one side of the fire hydrant body, a flow sensor is arranged in the water outlet pipe, a controller is arranged outside the water outlet pipe, the water outlet pipe is connected with a pressure reduction adjusting part in series, the pressure reduction adjusting part comprises a pressure reduction plate set and an adjusting combination, and the pressure reduction plate set is connected with the adjusting combination in series. The pressure reducing plate set comprises a partition plate and a pressure adjusting plate. According to the utility model, the partition plate and the pressure regulating plate are arranged in the water outlet pipe, the inner cavity of the water outlet pipe is divided into the left cavity and the right cavity by the partition plate, the regulating plate is arranged in a sliding manner relative to the water outlet pipe, and the pressure regulating plate moves close to and far away from the partition plate when moving; the water outlet flow of the water outlet pipe is changed when the distance between the pressure adjusting plate and the partition plate is changed, impact cannot be formed in a water path through the flow control structure, and the stability when the water flow is adjusted is improved.

Description

Technical Field

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

[0002] Indoor fire hydrants are used by indoor pipe networks to supply water to the fire scene. They have valve interfaces and are fixed indoor fire-fighting facilities in factories, warehouses, high-rise buildings, public buildings and ships. They are usually installed in fire hydrant boxes and are used in conjunction with fire hoses, water guns and other equipment.

[0003] The utility model disclosed in publication number CN220404711U proposes an indoor fire hydrant with a pressure reducing function, comprising an indoor fire hydrant body, wherein the right side of the indoor fire hydrant body is connected to a pressure reducing box, the top of the pressure reducing box is fixedly connected to an adjustment box, the inner cavity of the adjustment box is fixedly connected to a dual-axis motor, the output end of the dual-axis motor is fixedly connected to a threaded rod, the surface of the threaded rod is threadedly connected to a threaded sleeve, the bottom of the threaded sleeve is fixedly connected to an extension plate, one side of the extension plate is fixedly connected to a vertical plate, one side of the vertical plate is fixedly connected to an extension rod, the other end of the extension rod is fixedly connected to a pressure reducing plate, and the surface of the pressure reducing plate is provided with a pressure reducing through hole. The utility model, through the coordinated use of the indoor fire hydrant body, the pressure reducing box, the adjustment box, the dual-axis motor, the threaded rod, the threaded sleeve, the extension plate, the vertical plate, the extension rod, the pressure reducing plate, and the pressure reducing through hole, can automatically adjust the water pressure when the indoor fire hydrant body is needed to extinguish a fire, thereby improving practicality.

[0004] However, the above-mentioned prior art still has the following deficiencies when used: 1. The method of using two pressure-reducing plates to move synchronously in opposite directions to control the water flow rate and thus adjust the water pressure can easily cause the water flow in the waterway to form an impact. Simply put, when the two pressure-reducing plates move in opposite directions, they will produce a flow interception effect, and the flow interception can easily cause water hammer to form in the waterway, thereby affecting the stability of the entire waterway; 2. A dual-axis motor is used to control the rotation of the threaded rod to control the movement of the two pressure-reducing plates. Since the two pressure-increasing plates have a large resistance to lateral movement under the impact of the water flow, and the threaded transmission is a friction transmission, a large-power motor is required, which has the disadvantage of a large cost investment.

[0005] To this end, the utility model provides a pressure-reducing fire hydrant device. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pressure-reducing fire hydrant device to solve the problems raised in the above-mentioned background technology. The utility model has the function of controlling water flow without affecting the stability of water flow in the waterway, and also has the function of controlling water flow with less power, reducing cost investment and low subsequent maintenance cost.

[0007] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions: a pressure-reducing fire hydrant device, including a fire hydrant body, a water outlet pipe is provided on one side of the fire hydrant body, a flow sensor is provided in the water outlet pipe, a controller is provided on the outside of the water outlet pipe, a pressure-reducing regulating part is connected in series on the water outlet pipe, the pressure-reducing regulating part includes a pressure-reducing plate group and a regulating combination, the pressure-reducing plate group includes a partition and a pressure regulating plate, the partition is fixedly arranged in the water outlet pipe and divides the water outlet pipe into a left cavity and a right cavity, the left cavity is arranged close to the fire hydrant body, a conical water pipe is welded through the partition, the small end of the conical water pipe is located in the left cavity, the pressure regulating plate is accommodated in the right cavity and is slidingly arranged, a conical regulating pipe coaxial with the conical water pipe is fixedly connected to the pressure regulating plate, the small end of the conical regulating pipe extends into the conical water pipe, and the regulating combination is arranged on the water outlet pipe and is used to control the sliding of the pressure regulating plate.

[0008] Furthermore, the number of the conical water pipes is at least three and is evenly distributed circumferentially relative to the partition, the number of the conical regulating pipes is the same as the number of the conical water pipes and the two correspond one to one, the pressure regulating plate and the partition are coaxial and their outer diameter is smaller than the inner diameter of the water outlet pipe.

[0009] Furthermore, a guide shaft is fixedly connected to the middle of the side of the pressure regulating plate facing away from the partition, and a bent pipe is fixedly connected to one end of the water outlet pipe. A guide sleeve is fixedly provided on the arc wall of the bent pipe and is sleeved on the outside of the guide shaft. The guide sleeve and the guide shaft are sealed and slidably matched.

[0010] Furthermore, a sealing rubber ring is nested in the guide sleeve and is sleeved on the outside of the guide shaft.

[0011] Furthermore, the adjustment combination includes a turntable, a control motor and a return spring. The fixed sleeve on the guide shaft is provided with a baffle located outside the water outlet pipe. The return spring is sleeved on the guide shaft and located between the baffle and the guide sleeve. The turntable is rotatably connected to the outer wall of the bent pipe and one side of it is against the free end of the guide shaft. One side of the turntable is fixedly provided with a slope used in conjunction with the guide shaft. The control motor is fixed on the outer wall of the water outlet pipe and is used to control the rotation of the turntable.

[0012] Furthermore, the free end of the guide shaft is provided with a ball that rolls with the turntable.

[0013] Furthermore, the action end of the control motor is fixedly connected to a transmission gear, and the transmission gear is meshed with the outer peripheral wall of the turntable.

[0014] The beneficial effects of the utility model are as follows:

[0015] In the present invention, a partition and a pressure regulating plate are arranged in the water outlet pipe, the partition divides the inner cavity of the water outlet pipe into a left cavity and a right cavity, the regulating plate is slidingly arranged relative to the water outlet pipe, and the pressure regulating plate moves towards and away from the partition when it is in action, wherein a conical water pipe is arranged on the partition, and a conical regulating pipe is arranged on the pressure regulating plate. When the distance between the pressure regulating plate and the partition changes, the water flow rate of the water outlet pipe changes. This flow control structure will not form an impact in the water channel, thereby improving the stability when the water flow size is adjusted.

[0016] In the present invention, the adjustment combination includes a turntable, a control motor and a return spring, wherein a slope is set on one side of the turntable, and a guide shaft for driving the pressure regulating plate to move is set on one side of the pressure regulating plate. One end of the guide shaft and one side of the turntable are in rolling cooperation, wherein the return spring is sleeved on the guide shaft. When the turntable rotates, the slope and the return spring are used to drive the pressure regulating plate to move. This setting greatly reduces the driving force required for flow regulation, reduces the cost investment, and improves the smoothness of flow regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a pressure-reducing fire hydrant device of the utility model;

[0018] Figure 2 This is a schematic diagram of the cooperation between the guide shaft and the elbow of a pressure-reducing fire hydrant device of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged part "a".

[0020] In the figure: 1. Fire hydrant body; 2. Water outlet pipe; 21. Elbow; 211. Guide sleeve; 3. Flow sensor; 4. Controller; 5. Pressure reducing adjustment unit; 51. Pressure reducing plate assembly; 511. Partition; 5111. Conical water pipe; 512. Pressure regulating plate; 5121. Conical regulating pipe; 5122. Guide shaft; 51221. Baffle; 52. Adjustment assembly; 521. Turntable; 5211. Slope; 522. Control motor; 5221. Transmission gear; 523. Return spring; 6. Left chamber; 7. Right chamber; 8. Rubber ring; 9. Ball bearing. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figures 1 to 3The utility model provides a technical solution: a pressure-reducing fire hydrant device, including a fire hydrant body 1, a water outlet pipe 2 is provided on one side of the fire hydrant body 1, and the outlet of the water outlet pipe 2 is connected to the external pipeline through a connecting piece when in use, and a flow sensor 3 is provided in the water outlet pipe 2. The function of the flow sensor 3 is to monitor the flow rate of water out of the water outlet pipe 2, and a controller 4 is provided on the outside of the water outlet pipe 2. The controller 4 has a built-in circuit board, and a programmable control board group is provided on the circuit board. The programmable control board group and the flow sensor 3 are electrically connected, and the flow sensor 3 transmits the measured flow signal to the programmable control board group, so that the programmable control board group can control the actions of other executive components.

[0023] In the present technical solution, a pressure reducing regulating part 5 is connected in series to the water outlet pipe 2, and the pressure reducing regulating part 5 includes a pressure reducing plate group 51 and an regulating combination 52. The pressure reducing plate group 51 includes a partition 511 and a pressure regulating plate 512. The partition 511 is fixedly arranged in the water outlet pipe 2 and divides the water outlet pipe 2 into a left cavity 6 and a right cavity 7. The left cavity 6 is arranged close to the fire hydrant body 1, and the flow sensor 3 is located in the left cavity 6. When the fire hydrant body 1 is opened, the water first enters the left cavity 6. A conical water pipe 5111 is welded through the partition 511, and the small end of the conical water pipe 5111 is located in the left cavity 6. The water in the left cavity 6 passes through the conical water pipe 5111 and enters the right cavity 7.

[0024] Among them, the pressure regulating plate 512 is accommodated in the right cavity 7 and is slidingly arranged. In specific implementation, it is preferred that a guide shaft 5122 is fixedly connected to the middle part of the pressure regulating plate 512 on the side facing away from the partition 511, and one end of the water outlet pipe 2 is fixedly connected to a curved pipe 21. A guide sleeve 211 is fixedly arranged on the arc wall of the curved pipe 21 and is sleeved on the outside of the guide shaft 5122. The guide sleeve 211 and the guide shaft 5122 are sealed and slidably matched. Furthermore, a sealing rubber ring 8 is nested in the guide sleeve 211 and is sleeved on the outside of the guide shaft 5122. A conical regulating tube 5121 coaxial with the conical water pipe 5111 is fixedly connected to the pressure regulating plate 512, and the small end of the conical regulating tube 5121 extends into the conical water pipe 5111. The inner channel of the conical regulating tube 5121 and the channel between the conical regulating tube 5121 and the inner conical wall of the conical water pipe 5111 are channels for water to flow through, wherein the channel between the conical regulating tube 5121 and the inner conical wall of the conical water pipe 5111 is a pressure regulating channel, that is, when the pressure regulating plate 512 slides, it changes towards and away from the partition 511, and the cross-section of the above-mentioned pressure regulating channel changes.

[0025] In this embodiment, there are at least three conical water pipes 5111, evenly distributed circumferentially relative to the partition plate 511. The number of conical regulating pipes 5121 is the same as the number of conical water pipes 5111, and the two correspond one-to-one. The pressure regulating plate 512 and the partition plate 511 are coaxial, and its outer diameter is smaller than the inner diameter of the water outlet pipe 2. The space between the pressure regulating plate 512 and the water outlet pipe 2 serves as a water passage. It should be noted that the small end of the conical regulating pipe 5121 can be a blind end or a through hole with a diameter much smaller than the small end of the conical water pipe 5111.

[0026] In summary, the above-mentioned method of changing the annular cross-section of the pressure regulating channel by controlling the distance between the pressure regulating plate 512 and the partition plate 511 can effectively avoid the problem of water flow fluctuation in the waterway, thereby stably outputting water.

[0027] The regulating assembly 52 is provided on the water outlet pipe 2 and is used to control the sliding of the pressure regulating plate 512 .

[0028] Specifically, the adjustment assembly 52 includes a turntable 521, a control motor 522 and a return spring 523. The guide shaft 5122 is fixedly sleeved with a baffle 51221 located outside the water outlet pipe 2. The return spring 523 is sleeved on the guide shaft 5122 and is located between the baffle 51221 and the guide sleeve 211. The turntable 521 is rotatably connected to the outer wall of the elbow 21 and one side thereof is against the free end of the guide shaft 5122. In specific implementation, a positioning sleeve can be welded on the outer arc wall of the elbow 21, and then a positioning sleeve can be welded in the middle of one side of the turntable 521. A positioning shaft rotatably connected to the positioning sleeve, and a slope 5211 is fixedly provided on one side of the turntable 521 for use with the guide shaft 5122. During the rotation of the turntable 521, the slope 5211 is used to push the guide shaft 5122. When the guide shaft 5122 is pushed, the return spring 523 is squeezed. At this time, the distance between the pressure regulating plate 512 and the partition 511 is reduced, and vice versa. The control motor 522 is fixedly set on the outer wall of the water outlet pipe 2 and is used to control the rotation of the turntable 521. This method of driving the guide shaft 5122 to move is more labor-saving.

[0029] Furthermore, the action end of the control motor 522 is fixedly connected to a transmission gear 5221, which is engaged with the outer peripheral wall of the turntable 521. The control motor 522 drives the turntable 521 to rotate through the transmission gear 5221, wherein the pitch circle diameter of the transmission gear 5221 is smaller than the pitch circle diameter of the turntable 521. This setting can further reduce the power requirement of the control motor 522, thereby reducing the cost investment.

[0030] The free end of the guide shaft 5122 is provided with a ball 9 that rolls with the turntable 521. The provision of the ball 9 enables the guide shaft 5122 and the turntable 521 to roll with each other, thereby reducing the friction between the two.

[0031] Work away: Before use, electrically connect the controller 4 and the control motor 522. The controller 4 starts the control motor 522 according to the water flow in the outlet pipe 2 obtained by the flow sensor 3, so that the outlet pipe 2 can automatically adjust the water pressure of the fire hydrant body 1, so that the outlet pipe 2 can stably discharge water. During use, when the water pressure in the left chamber 6 increases, resulting in an increase in flow, the outlet pressure of the outlet pipe 2 increases. At this time, the flow sensor 3 obtains the flow of water in the left chamber 6. At this time, the controller 4 starts the control motor 522, and the control motor 522 drives the turntable 521 to rotate through the transmission gear 5221. When the slope 5211 contacts the ball 9, it pushes the guide shaft 5122 to move axially, the reset spring 523 is compressed, the pressure regulating plate 512 approaches the partition 511, and the flow cross section between the conical water pipe 5111 and the conical regulating pipe 5121 is reduced, thereby reducing the outlet pressure of the outlet pipe 2. When the water pressure in the left chamber 6 decreases, the flow rate decreases and the water outlet pressure of the outlet pipe 2 decreases. At this time, the pressure regulating plate 512 can be controlled to move away from the partition 511, so that the above-mentioned flow cross-street area is increased, thereby achieving stable water outlet.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pressure-reducing fire hydrant device, comprising a fire hydrant body (1), a water outlet pipe (2) provided on one side of the fire hydrant body (1), a flow sensor (3) provided inside the water outlet pipe (2), a controller (4) provided outside the water outlet pipe (2), a pressure-reducing regulating portion (5) connected in series to the water outlet pipe (2), characterized in that: The pressure reducing regulating portion (5) comprises a pressure reducing plate group (51) and a regulating assembly (52), wherein the pressure reducing plate group (51) comprises a partition (511) and a pressure regulating plate (512), wherein the partition (511) is fixedly arranged in the water outlet pipe (2) and divides the water outlet pipe (2) into a left chamber (6) and a right chamber (7), wherein the left chamber (6) is arranged close to the fire hydrant body (1), and a conical water pipe (5111) is welded through the partition (511). The small end of the water pipe (5111) is located in the left cavity (6), the pressure regulating plate (512) is accommodated in the right cavity (7) and is arranged to slide, a conical regulating tube (5121) coaxial with the conical water pipe (5111) is fixedly connected to the pressure regulating plate (512), and the small end of the conical regulating tube (5121) extends into the conical water pipe (5111), and the regulating assembly (52) is arranged on the water outlet pipe (2) and is used to control the sliding of the pressure regulating plate (512).

2. A pressure reducing fire hydrant device according to claim 1, characterized in that: The number of the conical water pipes (5111) is at least three and is evenly distributed circumferentially relative to the partition plate (511). The number of the conical regulating pipes (5121) is the same as the number of the conical water pipes (5111), and the two correspond one to one. The pressure regulating plate (512) and the partition plate (511) are coaxial, and the outer diameter of the pressure regulating plate (512) is smaller than the inner diameter of the water outlet pipe (2).

3. A pressure reducing fire hydrant device according to claim 2, characterized in that: A guide shaft (5122) is fixedly connected to the middle portion of the side of the pressure regulating plate (512) facing away from the partition plate (511), and a curved pipe (21) is fixedly connected to one end of the water outlet pipe (2). A guide sleeve (211) sleeved on the outside of the guide shaft (5122) is fixedly provided on the arc wall of the curved pipe (21), and the guide sleeve (211) and the guide shaft (5122) are in sealing and sliding engagement.

4. A pressure reducing fire hydrant device according to claim 3, characterized in that: A sealing rubber ring (8) is nested in the guide sleeve (211) and is sleeved on the outside of the guide shaft (5122).

5. A pressure reducing fire hydrant device according to claim 3, characterized in that: The adjustment assembly (52) comprises a rotating disk (521), a control motor (522) and a return spring (523); a baffle (51221) located outside the water outlet pipe (2) is fixedly sleeved on the guide shaft (5122); the return spring (523) is sleeved on the guide shaft (5122) and located between the baffle (51221) and the guide sleeve (211); the rotating disk (521) is rotatably connected to the outer wall of the curved pipe (21) and one side of the rotating disk abuts against the free end of the guide shaft (5122); a slope (5211) used in conjunction with the guide shaft (5122) is fixedly provided on one side of the rotating disk (521); the control motor (522) is fixedly arranged on the outer wall of the water outlet pipe (2) and is used to control the rotation of the rotating disk (521).

6. A pressure reducing fire hydrant device according to claim 5, characterized in that: The free end of the guide shaft (5122) is provided with a ball (9) that rolls with the turntable (521).

7. A pressure reducing fire hydrant device according to claim 5, characterized in that: The action end of the control motor (522) is fixedly connected to a transmission gear (5221), and the transmission gear (5221) is meshed with the outer peripheral wall of the rotating disk (521).

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