Low-pressure gas explosion fountain

Abstract

The utility model discloses a low-pressure gas explosion fountain which comprises a barrel body, the barrel body is provided with a pneumatic valve and an electromagnetic valve, the pneumatic valve is externally connected with an air pump and is provided with an air outlet pipe, the air outlet pipe extends into the barrel body, and the electromagnetic valve controls the opening and closing actions of the pneumatic valve. According to the low-pressure gas explosion fountain, the electromagnetic valve is used for outputting small-flow gas into the pneumatic valve, opening and closing of the pneumatic valve are controlled, the pneumatic valve provides sufficient large-flow pressurized gas into the gas explosion fountain, and therefore higher water columns and loud roars can be generated, and the using effect is better; in addition, a valve body for directly controlling working gas is replaced by a pneumatic valve from an electromagnetic valve, so that the control response time is greatly shortened, the control sensitivity is improved, and a low-pressure gas explosion fountain matrix is more natural and smooth in presentation.

Description

Technical Field

[0001] This utility model relates to a low-pressure gas explosion fountain. Background Technology

[0002] With the development of the modern cultural tourism industry, fountains are increasingly being used in cultural tourism performances. Air-blast fountains are one of the most common types, possessing strong explosive power and impact, producing towering water jets accompanied by a booming sound, creating a stunning effect. Air-blast fountains primarily work by rapidly filling a water-filled explosion tube with pressurized gas. Under the pressure of the gas, the water inside the explosion tube is propelled upwards in an explosive spray, creating an explosive water splash effect and a loud bang. The spectacle is spectacular and eye-catching, achieving a joyful and festive effect.

[0003] The working principle of a gas explosion fountain requires the rapid introduction of pressurized gas, necessitating the use of a solenoid valve to control this gas flow. Currently, domestically available products use a method where the solenoid valve is energized to directly fill the fountain cylinder with gas. However, this method has inherent limitations: the gas flow rate supplied by the solenoid valve is relatively small, and directly supplying gas via a solenoid valve cannot meet the required flow rate. Furthermore, low-pressure gas explosion fountains are often used in matrix displays, where several fountains form a matrix that coordinates and displays a wide range of variations based on control commands. This places higher demands on the control response time and sensitivity of such fountains. Existing low-pressure gas explosion fountains can no longer meet these requirements. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a low-pressure air-explosion fountain. It utilizes a solenoid valve to output a small flow of compressed air to a pneumatic valve, controlling the valve's opening and closing. The pneumatic valve then supplies a sufficient quantity and large flow of working gas into the fountain's cylinder, thus meeting the required working gas flow and resulting in a superior air-explosion effect. Furthermore, replacing the solenoid valve with a pneumatic valve directly controlling the working gas shortens the control response time and improves control sensitivity, making the low-pressure air-explosion fountain matrix appear more natural and fluid.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a low-pressure gas explosion fountain, including a cylinder, wherein the cylinder is provided with a pneumatic valve and a solenoid valve, the pneumatic valve is externally connected to an air pump and is provided with an air outlet pipe, the air outlet pipe extends into the interior of the cylinder, and the solenoid valve controls the opening and closing of the pneumatic valve.

[0006] Preferably, the pneumatic valve is provided with a connecting cavity, one end of which is connected to a spring cavity and the other end to a pressure relief cavity. The spring cavity is connected to an air inlet cavity, and a working air pipe is installed in the air inlet cavity. The working air pipe is connected to an air pump. An air outlet cavity is provided in the middle section of the connecting cavity, and the air outlet cavity is connected to the air outlet pipe.

[0007] Preferably, a valve stem is provided in the communicating cavity, a first diaphragm assembly is provided at one end of the valve stem located in the spring cavity, and a second diaphragm assembly is provided at one end of the valve stem located in the pressure relief cavity; a return spring is provided in the spring cavity, which presses against the first diaphragm assembly to compress it and seal the passage between the communicating cavity and the air intake cavity.

[0008] Preferably, a high-pressure chamber is provided inside the pneumatic valve on the outside of the second diaphragm assembly. The high-pressure chamber is connected to a second airflow channel, which is connected to the solenoid valve. When the solenoid valve inputs high-pressure air into the high-pressure chamber through the second airflow channel, the air pressure acts on the second diaphragm assembly, driving the valve stem to move, thereby opening the passage between the air inlet chamber and the connecting chamber, allowing the pressurized air in the working air pipe to enter the air outlet pipe.

[0009] Preferably, the pressure relief chamber is provided with a connection hole and a pressure relief port, the connection hole is connected to a first airflow channel, the first airflow channel is connected to the solenoid valve; the pressure relief port is provided with a pressure relief valve.

[0010] Preferably, a fixed bracket is provided on the outer wall of the pneumatic valve, and a control air pipe is installed on the fixed bracket, the control air pipe being connected to the solenoid valve.

[0011] Preferably, a base is provided at the bottom of the cylinder, the base supports the cylinder, and a plurality of water inlet holes are provided on the bottom surface of the cylinder.

[0012] Preferably, a water supply pipe is provided inside the cylinder, and a water spray pipe is provided at the top of the cylinder, with the water supply pipe connected to the water spray pipe.

[0013] This invention provides a low-pressure air explosion fountain. It utilizes a solenoid valve to control the output of a small flow of compressed air to a pneumatic valve, thereby controlling the opening and closing of the pneumatic valve. The pneumatic valve then controls a large flow of pressurized working gas into the air explosion fountain cylinder, resulting in a higher water column and a louder booming sound, leading to a superior air explosion effect. Furthermore, replacing the solenoid valve with a pneumatic valve directly controlling the working gas significantly shortens the control response time and improves control sensitivity, resulting in a more natural and fluid presentation of the low-pressure air explosion fountain matrix. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of this utility model. For those skilled in the art, other embodiments and their accompanying drawings can be obtained from the embodiments shown in these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional view of the structure of this utility model.

[0016] Figure 2 This is a top view of the structure of this utility model.

[0017] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0018] Figure 4 yes Figure 3 Enlarged schematic diagram of the structure at point C.

[0019] Figure 5 This is a schematic diagram of one side of the valve body structure of the pneumatic valve of this utility model.

[0020] Figure 6 This is a schematic diagram of the other side of the valve body of the pneumatic valve of this utility model.

[0021] Figure 7 This is a side view of the structure of this utility model.

[0022] Figure 8 yes Figure 7 A cross-sectional view along the DD direction.

[0023] In the diagram: cylinder 1, water pipe 11, reinforcing rib 12, base 2, pneumatic valve 3, first airflow channel 31, second airflow channel 32, connecting cavity 33, air outlet cavity 331, spring cavity 34, return spring 341, air inlet cavity 342, high pressure cavity 35, pressure relief cavity 36, connecting hole 361, pressure relief port 362, air outlet pipe 37, solenoid valve 4, control air pipe 5, fixed bracket 51, working air pipe 6, valve stem 7, first diaphragm assembly 71, second diaphragm assembly 72, water spray pipe 8. Detailed Implementation

[0024] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In existing technologies, the air flow rate of solenoid valves is limited and cannot meet higher requirements. Therefore, this device uses a pneumatic valve 3 in conjunction with a solenoid valve 4: the solenoid valve 4 outputs a small flow of compressed air to the pneumatic valve 3 to control its opening and closing; after the pneumatic valve 3 is opened, a large flow of working gas generated by an external air pump is rapidly injected into the cylinder 1 through the pneumatic valve 3, thereby producing a superior gas explosion effect. The solenoid valve 4 is controlled by an electrical signal, and the opening and closing of the pneumatic valve 3 is achieved through the compressed air input to the solenoid valve 4.

[0026] Unlike high-pressure gas explosion fountains, low-pressure gas explosion fountains are often used in matrix displays. Several low-pressure gas explosion fountains form a matrix, which coordinates and cooperates according to control commands to present rich variations. This places higher demands on the control response time and control sensitivity of this type of fountain. This technology replaces the valve body that directly controls the working gas from a solenoid valve to a pneumatic valve, which greatly shortens the control response time and improves the control sensitivity. The presentation effect of the low-pressure gas explosion fountain matrix is ​​more natural and smooth.

[0027] like Figures 1 to 8 As shown, this embodiment discloses a low-pressure gas explosion fountain, including a cylinder 1. The cylinder 1 is equipped with a pneumatic valve 3 and a solenoid valve 4. The pneumatic valve 3 is externally connected to an air pump and has an air outlet pipe 37 extending into the cylinder 1. The solenoid valve 4 controls the opening and closing of the pneumatic valve 3. The solenoid valve 4 is also connected to an external air pump via a control air pipe 5. The air pumps connected to the pneumatic valve 3 and the solenoid valve 4 can be the same, but provide air at different pressures; or different air pumps can be used.

[0028] In this embodiment, the gas pressure range for the solenoid valve 4 to drive the pneumatic valve is 0.6-0.8 MPa. This range is chosen because the airflow within this range can effectively control the opening and closing of the pneumatic valve; pressures below this range would affect control accuracy, while pressures above this range would be unnecessary and wasteful of resources.

[0029] The gas pressure range for producing the gas explosion effect by introducing air into the cylinder 1 through the pneumatic valve 3 is 0.1-0.2 MPa, which falls within the range of a low-pressure gas explosion fountain. High-pressure gas explosion fountains, on the other hand, have gas pressures between 4.2 MPa and 5.6 MPa, and their application scenarios differ.

[0030] A connecting cavity 33 is provided in the center of the pneumatic valve 3, and a valve stem 7 is provided in the connecting cavity 33.

[0031] One end of the connecting cavity 33 is connected to the spring cavity 34, and the other end is connected to the pressure relief cavity 36. The spring cavity 34 is connected to the air inlet cavity 342, and the air inlet cavity 342 is equipped with the working air pipe 6. This working air pipe 6 is connected to the aforementioned external air pump to provide working gas. The middle section of the connecting cavity 33 is provided with an air outlet cavity 331. The air outlet cavity 331 is connected to the air outlet pipe 37.

[0032] A first diaphragm assembly 71 is provided at one end of the valve stem 7 located in the spring cavity 34, and a second diaphragm assembly 72 is provided at one end located in the pressure relief cavity 36. The two diaphragm assemblies can seal the port of the connecting cavity 33, so that the connecting cavity 33 is not connected to the pressure relief cavity 36 or the air intake cavity 342. Either one of them is in a sealed working state.

[0033] A reset spring 341 is provided in the spring cavity 34. The reset spring 341 presses against the first diaphragm assembly 71 to press it tightly and seal the passage between the communicating cavity 33 and the air intake cavity 342.

[0034] Furthermore, a high-pressure chamber 35 is located inside the pneumatic valve 3, outside the second diaphragm assembly 72. The high-pressure chamber 35 is connected to a second airflow channel 32. The second airflow channel 32 is connected to the solenoid valve 4 via a pipe. When the solenoid valve 4 changes its internal passage, compressed air enters the second airflow channel 32 through the pipe and then flows into the high-pressure chamber 35. The air pressure acts on the second diaphragm assembly 72, driving the valve stem 7 to move. This causes the second diaphragm assembly 72 to press against the port of the corresponding connecting chamber 33, thereby opening the port of the other connecting chamber 33. This connects the passage between the inlet chamber 342 and the connecting chamber 33, allowing the working gas from the working air pipe 6 to enter the outlet pipe 37. This process is the operation of the solenoid valve 4 controlling the opening of the pressure valve 3.

[0035] The pressure relief chamber 36 is provided with a connection hole 361 and a pressure relief port 362. The connection hole 361 is connected to a first airflow channel 31. The first airflow channel 31 is connected to the solenoid valve 4; the pressure relief port 362 is provided with a pressure relief valve.

[0036] When the high-pressure water jet is not needed, i.e., when the pneumatic valve 3 is not required to operate, the solenoid valve 4 changes its internal passage again. There is no longer compressed air in the second airflow channel 32, and the airflow inside the pipeline enters the first airflow channel 31. At this time, the valve stem 7 of the pneumatic valve 3 moves under the action of the return spring 341, the second diaphragm assembly 72 leaves its corresponding sealing position, and the first diaphragm assembly 71 seals the corresponding port of the connecting cavity 33, disconnecting the passage between the air inlet cavity 342 and the connecting cavity 33. The compressed air passing through the first airflow channel 31 enters the pressure relief cavity 36. When the air pressure does not exceed the pressure relief valve, all compressed air enters the connecting cavity 33, flows through the air outlet cavity 331 into the air outlet pipe 37, and finally enters the cylinder 1, enabling the low-pressure air explosion fountain to operate.

[0037] A fixed bracket 51 is provided on the outer wall of the pneumatic valve 3, and a control air pipe 5 is installed on the fixed bracket 51. The control air pipe 5 is connected to the solenoid valve 4.

[0038] The solenoid valve in this device is a two-position three-way valve, while the pneumatic valve is a two-position four-way valve. The solenoid valve is connected to the pneumatic control air pipe 5, the first airflow channel 31, and the second airflow channel 32. The pneumatic valve is connected to the working air pipe 6, the outlet air pipe 37, the pressure relief valve, and the second airflow channel 32.

[0039] Finally, a base 2 is provided at the bottom of the cylinder 1, which supports the cylinder 1, creating a gap between the bottom surface of the cylinder 1 and the ground. Several water inlet holes are provided on the bottom surface of the cylinder 1, and each water inlet hole is equipped with a one-way valve structure. This valve structure allows external water to smoothly enter the cylinder 1 through the water inlet holes, while water inside the cylinder 1 cannot pass through the water inlet holes. The cylinder 1 is wholly or partially submerged in water, and external water, under water pressure, naturally passes through the water inlet holes into the cylinder 1. The one-way valve structure can be a one-way valve or diaphragm provided on each water inlet hole.

[0040] Alternatively, a single diaphragm can be installed inside the cylinder 1, covering all the water inlets. External water, under pressure, can push up the diaphragm and enter the cylinder 1. Meanwhile, the water inside the cylinder 1, under pressure, presses the diaphragm tightly against the bottom surface of the cylinder 1, covering all the water inlets, thus achieving a seal.

[0041] A water supply pipe 11 is installed inside the cylinder 1, and a water spray pipe 8 is installed at the top of the cylinder 1. The water supply pipe 11 is connected to the water spray pipe 8. Water inside the cylinder 1 is forced into the water supply pipe 11 by air pressure and finally sprayed out from the water spray pipe 8 to form a fountain.

[0042] Finally, reinforcing ribs 12 are installed inside the cylinder 1, located on the top surface of the cylinder 1, forming a ring around the water supply pipe 11. The air outlet pipe 37 is curved at one end inside the cylinder 1, with its opening facing the top of the cylinder 1. The reinforcing ribs 12 are positioned above the opening of the air outlet pipe 37, enhancing the strength of the top surface of the cylinder 1 and preventing irregular deformation under stress. The pressurized air output from the air outlet pipe 37 collects inside the cylinder 1 and exerts force on the water below, causing the water inside the cylinder 1 to enter the water supply pipe 11 and finally spray out from the water spray pipe 8, forming a fountain.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and not restrictive in all respects. The scope of this invention is defined by the appended claims, not by the foregoing description, and is therefore intended to encompass all variations falling within the meaning and scope of equivalents of the claims. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Low pressure air blast fountain comprising a cylinder (1), characterized in that: The cylinder (1) is provided with a pneumatic valve (3) and an electromagnetic valve (4), the pneumatic valve (3) is externally connected with an air pump and is provided with an air outlet pipe (37), the air outlet pipe (37) extends into the inside of the cylinder (1), the electromagnetic valve (4) controls the opening and closing action of the pneumatic valve (3).

2. The low pressure air blast fountain of claim 1, wherein: The pneumatic valve (3) is provided with a communication cavity (33), one end of the communication cavity (33) is connected with a spring cavity (34) and the other end is connected with a pressure relief cavity (36), the spring cavity (34) is connected with an air inlet cavity (342), the air inlet cavity (342) is installed with a working air pipe (6), the working air pipe (6) is connected with an air pump; the communication cavity (33) is provided with an air outlet cavity (331) in the middle section, the air outlet cavity (331) is connected with the air outlet pipe (37).

3. The low pressure air blast fountain of claim 2, wherein: The communication cavity (33) is provided with a valve rod (7), one end of the valve rod (7) located in the spring cavity (34) is provided with a first diaphragm assembly (71), and the other end located in the pressure relief cavity (36) is provided with a second diaphragm assembly (72); the spring cavity (34) is provided with a reset spring (341), the reset spring (341) presses the first diaphragm assembly (71) to compress and seal the passage between the communication cavity (33) and the air inlet cavity (342).

4. The low pressure air blast fountain of claim 3, wherein: The inside of the pneumatic valve (3) is provided with a high-pressure cavity (35) outside the second diaphragm assembly (72), the high-pressure cavity (35) is connected with a second airflow channel (32), the second airflow channel (32) is connected with the electromagnetic valve (4); when the electromagnetic valve (4) inputs high-pressure air to the high-pressure cavity (35) through the second airflow channel (32), the air pressure acts on the second diaphragm assembly (72) to drive the valve rod (7) to move, thereby opening the passage between the air inlet cavity (342) and the communication cavity (33), so that the pressurized air of the working air pipe (6) can enter the air outlet pipe (37).

5. The low pressure air blast fountain of claim 3, wherein: The pressure relief cavity (36) is provided with a connecting hole (361) and a pressure relief port (362), the connecting hole (361) is connected with a first airflow channel (31), the first airflow channel (31) is connected with the electromagnetic valve (4); the pressure relief port (362) is provided with a pressure relief valve.

6. A low pressure air blast fountain according to any one of claims 1 to 5, characterized in that: The outside wall of the pneumatic valve (3) is provided with a fixed support (51), the fixed support (51) is installed with a control air pipe (5), the control air pipe (5) is connected with the electromagnetic valve (4).

7. A low pressure air blast fountain according to any one of claims 1 to 5, characterized in that: The bottom of the cylinder (1) is provided with a base (2), the base (2) supports the cylinder (1), the bottom surface of the cylinder (1) is provided with a plurality of water inlet holes, the water inlet holes are provided with a one-way valve structure.

8. The low pressure air blast fountain of claim 7, wherein: The cylinder (1) is provided with a water delivery pipe (11), the top of the cylinder (1) is provided with a water spray pipe (8), the water delivery pipe (11) is connected with the water spray pipe (8).

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