A pressure relief mechanism

Abstract

The present application relates to shower equipment technical field, especially to a kind of depressurization explosion-proof mechanism, including the pressure regulating seat and pressure regulating cover being arranged in pipeline, the water passage is arranged in the pressure regulating seat, the water passage is respectively the water inlet end and the water outlet end at both ends, the pressure regulating cover includes cover and the turbulence section of one side thereof, the cover surface is equipped with multiple water holes, the turbulence section has tapered tip, the turbulence section is equipped with multiple outer ring grooves in the side of tapered tip away from the water outlet end, multiple inner ring grooves are sequentially connected in the water passage, the tapered tip of the turbulence section and multiple outer ring grooves and multiple inner ring grooves of the water passage are staggered arrangement.The depressurization explosion-proof mechanism provided in the present application can play the role of depressurization, can prevent shower gondola from bursting, and the pressure regulating seat and pressure regulating cover structure are simple, with lower manufacturing cost and lower injection time effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shower equipment, in particular to a pressure reduction explosion-proof mechanism. BACKGROUND

[0002] In the pressure pipeline, due to some external reasons (such as sudden closing of the valve, sudden stop of the water pump unit), the flow rate of water changes suddenly, thereby causing water hammer, which is a hydraulic phenomenon. Water hammer phenomenon is easy to cause the pipe or device with relatively poor pressure bearing capacity to burst. For example, when the water pressure in the shower pipeline increases rapidly or is continuously in a high pressure state, the shower head is prone to burst.

[0003] The Chinese invention patent with the patent publication number CN110076017A discloses a shower jet generating device with an overpressure valve, which sets a pressure relief feature at each water outlet of the shower head to solve the problem of product burst caused by water hammer impact or water outlet blockage. Although this scheme can solve the technical problem of product burst, it greatly increases the cost of the product and increases the injection time and process difficulty. SUMMARY

[0004] The present application solves the technical problems existing in the prior art and provides a pressure reduction explosion-proof mechanism.

[0005] The present application is realized by the following technical scheme:

[0006] A pressure reduction explosion-proof mechanism, comprising a pressure regulating seat and a pressure regulating cover arranged in a pipeline, the pressure regulating seat is fixedly installed to the pipeline, the pressure regulating seat is internally provided with a water passage, the two ends of the water passage are respectively an inlet end and an outlet end, the pressure regulating cover comprises a cover body and a spoiler section on one side of the cover body, the surface of the cover body is provided with a plurality of water passing holes, the spoiler section extends into the water passage from the inlet end, the spoiler section is a whole of a rotary body, the spoiler section has a tapered end, the spoiler section is provided with a plurality of outer ring grooves connected in sequence at the side of the tapered end away from the outlet end, the depth of each outer ring groove gradually decreases in the direction from the outlet end to the inlet end, the water passage is provided with a plurality of inner ring grooves connected in sequence, the number of the inner ring grooves is one more than that of the outer ring grooves, the depth of each inner ring groove gradually decreases in the direction from the outlet end to the inlet end, and the tapered end of the spoiler section and the plurality of outer ring grooves and the plurality of inner ring grooves of the water passage are staggered.

[0007] Preferably, the part of the water passage from the inner ring groove close to the outlet end to the outlet end is a rectifier section, and the inner side surface of the rectifier section is a whole of an arc surface with a concave middle part.

[0008] Preferably, the width of each outer ring groove is the same as the width of each inner ring groove, and the adjusting structure for adjusting the depth of the turbulence section extending into the water passage is provided between the pressure regulating cover and the pipeline, and the adjusting structure comprises an external thread provided on the outer periphery of the pressure regulating cover and an internal thread provided in the pipeline, and the internal thread is matched with the external thread.

[0009] Preferably, the pressure regulating seat is fixedly connected to the pipeline by interference fit.

[0010] Preferably, an annular protrusion is provided on the outer periphery of the pressure regulating seat, and an annular clamping step matched with the annular protrusion is provided in the pipeline, and the annular clamping step is located on the side of the annular protrusion close to the water outlet end.

[0011] Preferably, a sealing ring is provided between the annular protrusion and the inner wall of the pipeline.

[0012] Preferably, the diameter of the outer ring groove at its shallowest point is the same as the diameter of the inner ring groove at its shallowest point.

[0013] Preferably, a plurality of water passing holes are distributed at equal angles along the axis of the turbulence section.

[0014] The beneficial effects of the present application are:

[0015] The pressure reducing and explosion preventing mechanism provided by the present application can reduce the water pressure, and when the water pressure in the shower pipeline rapidly increases or continuously remains at a high level, the mechanism can keep the water pressure in the shower head relatively low, thereby preventing the shower head from exploding. In addition, the structure of the pressure regulating seat and the pressure regulating cover is simple, and the manufacturing cost and injection time are low. When the water flows through the rectifying section, the wall attachment pressure of the pipeline increases, a negative pressure area is formed in the middle of the water outlet end, the water flow returns to the center from the side to form a vortex, the energy is lost, and the flow rate of the water flow is reduced, thereby further improving the pressure reducing effect. The depth of the turbulence section extending into the water passage can be adjusted by rotating the pressure regulating cover, thereby adjusting the shortest distance between the shallowest point of the outer ring groove and the inner ring groove. When the shortest distance between the shallowest point of the outer ring groove and the inner ring groove decreases, the pressure reducing effect is more obvious. The annular protrusion and the annular clamping step are matched to prevent the pressure regulating seat from slipping in the pipeline under the impact of the water flow, thereby improving the stability of the pressure regulating seat. The sealing ring can prevent the water flow from passing between the pressure regulating seat and the inner wall of the pipeline. The water passing holes distributed at equal angles have good drainage effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is an explosion structure schematic diagram of the pressure reducing and explosion preventing mechanism described in the present application;

[0017] Figure 2 is an internal structure schematic diagram of the pressure reducing and explosion preventing mechanism described in the present application;

[0018] Figure 3 is a top view structure schematic diagram of the cover.

[0019] Figure 4 This is a schematic diagram of the structure of the pressure reduction and explosion-proof mechanism described in this invention installed in the pipeline;

[0020] Figure 5 This is a schematic diagram of the pressure reduction and explosion-proof mechanism described in this invention.

[0021] In the diagram: 1. Cover; 2. External thread; 3. Outer annular groove; 4. Conical end; 5. Sealing ring; 6. Annular protrusion; 7. Pressure regulating seat; 8. Inner annular groove; 9. Rectifying section; 10. Water passage hole; 11. Pipeline. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] like Figures 1-5 As shown, the present invention provides a pressure-reducing explosion-proof mechanism, including a pressure regulating seat 7 and a pressure regulating cover disposed in a pipeline 11. The pressure regulating seat 7 is fixedly installed in the pipeline 11. Specifically, the pressure regulating seat 7 can be installed in the pipeline 11 at the interface between the shower head and the rain shower pipe. The pressure regulating seat 7 has a water passage inside, with the two ends of the water passage being the inlet end and the outlet end, respectively. When the water in the pipeline 11 flows through the pressure regulating seat 7, it first enters the water passage from the inlet end and then flows out of the water passage from the outlet end. The pressure regulating cover includes a cover body 1 and a flow-dispersing section on one side. The surface of the cover body 1 is provided with multiple water passage holes 10, allowing the water in the pipeline 11 to pass through the water passage holes 10. The flow-dispersing section is located at the inlet end. The end extends into the water passage. The overall turbulence section is a rotating body with a conical end 4. On the side of the conical end 4 away from the outlet end, the turbulence section has multiple outer annular grooves 3 connected end-to-end. In this embodiment, two outer annular grooves 3 are provided. The depth of each outer annular groove 3 gradually decreases from the outlet end to the inlet end. The water passage has multiple inner annular grooves 8 connected end-to-end. The number of inner annular grooves 8 is one more than the number of outer annular grooves 3. In this embodiment, three inner annular grooves 8 are provided. The depth of each inner annular groove 8 gradually decreases from the outlet end to the inlet end. The conical end 4 of the turbulence section and the two outer annular grooves 3 are staggered with the three inner annular grooves 8 of the water passage.Figure 5 As shown, when the water flow passes through the gap between the turbulence section and the water passage, there is a backflow tendency when the water flow reaches the deepest part of the inner ring groove 8 and the deepest part of the outer ring groove 3, and the fluid pressure and flow rate are reduced, thereby playing a pressure reduction role. When the water pressure in the shower pipeline rapidly increases or continuously remains in a high pressure state, the shower head can maintain a relatively low water pressure under the action of the mechanism, which can prevent the shower head from bursting, and the pressure regulating seat 7 and the pressure regulating cover have a simple structure, low manufacturing cost and low injection time.

[0025] The part of the water passage near the outlet end side of the inner ring groove 8 to the outlet end is a flow regulating section 9, and the inner side of the flow regulating section 9 is an arc surface with a concave middle part. When the water flow passes through the flow regulating section 9, the pipeline wall pressure of the water flow increases, a negative pressure area is formed in the middle part of the outlet end, the water flow backflows from the side to the center to form a vortex, the energy is lost, and the water flow rate is reduced, thereby further improving the pressure reduction effect.

[0026] The widths of each outer ring groove 3 are the same, and the widths of each outer ring groove 3 and each inner ring groove 8 are the same. An adjusting structure for adjusting the depth of the turbulence section extending into the water passage is arranged between the pressure regulating cover and the pipeline 11. The adjusting structure includes an outer thread 2 arranged on the outer periphery of the pressure regulating cover and an inner thread arranged in the pipeline 11. The inner thread and the outer thread 2 can form a self-locking. When the pressure regulating cover is threadedly connected into the pipeline 11, the depth of the turbulence section extending into the water passage can be adjusted by rotating the pressure regulating cover, thereby adjusting the shortest distance between the shallowest part of the outer ring groove 3 and the inner ring groove 8. When the shortest distance between the shallowest part of the outer ring groove 3 and the inner ring groove 8 is reduced, the pressure reduction effect is more obvious.

[0027] The pressure regulating seat 7 is fixedly connected to the pipeline 11 by interference fit, and has a simple structure.

[0028] The pressure regulating seat 7 is provided with an annular protrusion 6 on the outer periphery, and the pipeline 11 is provided with an annular clamping step matched with the annular protrusion 6. The annular clamping step is located on the side of the annular protrusion 6 close to the outlet end, which can prevent the pressure regulating seat 7 from slipping in the pipeline under the impact of the water flow, and improve the stability of the pressure regulating seat 7.

[0029] A sealing ring 5 is arranged between the annular protrusion 6 and the inner wall of the pipeline 11 to prevent the water flow from passing between the pressure regulating seat 7 and the inner wall of the pipeline 11.

[0030] The diameter of the outer ring groove 3 at its shallowest part is the same as the diameter of the inner ring groove 8 at its shallowest part, and at this time, the outer ring groove 3 and the inner ring groove 8 have a good pressure reduction effect in cooperation.

[0031] A plurality of water passing holes 10 are distributed at equal angles along the axis of the turbulence section, which has a good flow guiding effect.

[0032] The working principle of the pressure reducing explosion-proof mechanism is that when water flows through the gap between the flow disturbing section and the water passage, the water has a backflow tendency when reaching the deepest part of the inner ring groove and the deepest part of the outer ring groove, and the fluid pressure and flow are reduced, thereby playing a pressure reducing role. The pressure reducing explosion-proof mechanism can play a pressure reducing role, when the water pressure in the shower pipeline rapidly increases or continuously remains in a high pressure state, under the action of the mechanism, the water pressure in the shower head remains relatively low, which can prevent the shower head from exploding, and the pressure regulating seat and the pressure regulating cover have simple structure, low manufacturing cost and low injection time efficiency; when the water flows through the flow regulating section, the pipe wall pressure of the water flow increases, a negative pressure area is formed in the middle of the outlet end, the water flow backflows from the side to the center to form a vortex, energy is lost, and the water flow velocity is reduced, thereby further improving the pressure reducing effect; the depth of the flow disturbing section extending into the water passage can be adjusted by rotating the pressure regulating cover, thereby adjusting the shortest distance between the shallowest part of the outer ring groove and the inner ring groove, when the shortest distance between the shallowest part of the outer ring groove and the inner ring groove is reduced, the pressure reducing effect is more obvious; the annular protrusion and the annular card step cooperate to prevent the pressure regulating seat from slipping in the pipeline under the impact of the water flow, thereby improving the stability of the pressure regulating seat; the sealing ring can prevent the water flow from passing between the pressure regulating seat and the inner wall of the pipeline; the equiangularly distributed water passing holes have good drainage effect.

[0033] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A pressure-reducing explosion-proof mechanism, characterized in that, The system includes a pressure regulating seat and a pressure regulating cover, both designed for installation within a pipeline. The pressure regulating seat has a water passage with an inlet and an outlet at its two ends. The pressure regulating cover includes a cover body and a flow-regulating section on one side. The cover body has multiple water passage holes on its surface. The flow-regulating section extends into the water passage from the inlet end. The flow-regulating section is a rotating body with a conical end. On the side of the conical end away from the outlet end, the flow-regulating section has multiple outer annular grooves connected end-to-end. The depth of each outer annular groove gradually decreases from the outlet end to the inlet end. The water passage has multiple inner annular grooves connected end-to-end, with one more inner annular groove than outer annular grooves. The depth of each inner annular groove gradually decreases from the outlet end to the inlet end. The conical end of the flow-regulating section and the multiple outer annular grooves are arranged alternately with the multiple inner annular grooves of the water passage.

2. The pressure-reducing explosion-proof mechanism according to claim 1, characterized in that, The water passage is a straightening section from the inner annular groove near the outlet end to the outlet end, and the inner surface of the straightening section is an arc-shaped surface with a concave center.

3. The pressure-reducing explosion-proof mechanism according to claim 1, characterized in that, Each outer ring groove has the same width, and each outer ring groove has the same width as each inner ring groove. An adjustment structure is provided between the pressure regulating cover and the pipeline for adjusting the depth of the turbulence section extending into the water passage. The adjustment structure includes an external thread on the outer periphery of the pressure regulating cover and an internal thread in the pipeline, and the internal thread and the external thread are compatible.

4. The pressure-reducing explosion-proof mechanism according to claim 1, characterized in that, The pressure regulating seat is fixed to the pipeline by an interference fit.

5. The pressure-reducing explosion-proof mechanism according to claim 4, characterized in that, The pressure regulating seat has an annular protrusion on its outer periphery, and the pipeline has an annular retaining step that matches the annular protrusion. The annular retaining step is located on the side of the annular protrusion near the water outlet.

6. The pressure-reducing explosion-proof mechanism according to claim 5, characterized in that, A sealing ring is provided between the annular protrusion and the inner wall of the pipeline.

7. The pressure-reducing explosion-proof mechanism according to claim 1, characterized in that, The diameter of the outer annular groove at its shallowest point is the same as the diameter of the inner annular groove at its shallowest point.

8. The pressure-reducing explosion-proof mechanism according to claim 1, characterized in that, Multiple water passages are distributed at equal angles along the axis of the turbulence section.

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