Exhaust pressure stabilizing safety type valve body module

Abstract

The invention relates to an exhaust pressure stabilizing safety type valve body module, and aims to solve the problems that a pressure stabilizing and releasing structure of an existing similar coffee machine is relatively complex, the cost input is relatively high, and when a water tank does not contain water, water cannot be fed after an electromagnetic pump is empty. The valve body module comprises a multi-channel main body and an exhaust assembly, and is characterized in that the exhaust assembly is arranged at an exhaust port of an inner passage of the multi-channel main body, an exhaust pin of the exhaust assembly is limited at the inner end of the exhaust port in a sliding mode, an exhaust pipe connector is fixed to the outer end of the exhaust port in a sealed mode, and a spring is arranged between the exhaust pin and the inner end of the exhaust pipe connector in an abutting mode. An exhaust groove is formed in the side face of the exhaust pin, and under the initial effect of the spring, the inner end of the exhaust pin abuts against the inner end of the exhaust port to form a sealing state. And when the inner end of the exhaust pin is subjected to pressure increase of the passage in the multi-channel main body and compresses the spring, the inner end of the exhaust pin and the exhaust port are unsealed, and part of gas and liquid in the channel main body are exhausted through the exhaust groove in the side surface of the exhaust pin and the exhaust pipe joint.

Description

Technical Field

[0001] The invention relates to a coffee machine pipeline system, which is an exhaust pressure stabilizing safety valve body module. Background Art

[0002] A coffee machine is an electrical device used for making coffee, generally categorized as semi-automatic or fully automatic. Semi-automatic machines rely on manual operation for grinding, tamping, filling, brewing, and removing grounds. Fully automatic machines, on the other hand, automate the entire coffee brewing process, including preheating, cleaning, grinding, tamping, brewing, and draining. They follow scientific data and procedures, brewing coffee at the touch of a button. With the improvement of people's quality of life and the popularization of coffee culture, the demand for coffee machine functionality is becoming increasingly diverse. Many people prefer Italian high-pressure espresso, but high-pressure espresso machines often experience unstable coffee flow rates and excessive pump vibration and noise. The amount of grounds added to Italian espresso is difficult to control, and when the capacity is exceeded, the brewing pressure can be too high, causing powder to explode and the tube to burst during brewing. Long-term high-pressure brewing significantly impacts the brewing system and the machine's lifespan. To address this technical issue, patent applications such as application number 202021961490.9, published in Chinese patent literature and published on June 4, 2021, are titled "A Water Boiler Pressure Relief and Energy Recovery System for a Commercial Coffee Machine." Another patent application, application number 202110565430.8, published on August 10, 2021, is titled "An Espresso Brewing Pipeline System for an Automatic Vending Coffee Machine." Both of these products utilize pressure monitoring to control electromagnetic pressure relief valves and other devices to achieve pressure relief and stabilization, ensuring safe pressure within the equipment. However, these devices remain complex, require high precision electronic control, and incur significant costs. Furthermore, in these products, when the water tank is empty, the water pump can fail to pump water after a dry run. Therefore, improvements are needed to the boiler front-end piping system structure of existing high-pressure coffee machines to enhance the user experience. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the present invention aims to provide a pressure-stabilizing, exhaust-safety valve module to the art. This module addresses the technical issues of existing coffee machines, such as the complex pressure-stabilizing and pressure-relieving structures, high costs, and the tendency for the electromagnetic pump to fail to supply water when the water tank is empty. This objective is achieved through the following technical solution.

[0004] An exhaust pressure-stabilizing safety valve body module, the valve body module includes a multi-channel main body and an exhaust component, the multi-channel main body is provided with a pump interface connected to an electromagnetic pump, and a pipe interface connected to a boiler pipe of a coffee machine, the multi-channel main body is provided with a passage connecting the pump interface and the pipe interface, and an exhaust port is provided in the passage; it is characterized in that the exhaust port is provided with the exhaust component, the exhaust component includes an exhaust pin, a spring, and an exhaust pipe joint, the exhaust pin sliding limit is located at the inner end of the exhaust port, the exhaust pipe joint is sealed and fixed at the outer end of the exhaust port, and the exhaust pin is relative to the inner end of the exhaust pipe joint. The spring is set against the exhaust pin, and the side of the exhaust pin is provided with an exhaust groove. Under the initial action of the spring, the inner end of the exhaust pin and the inner end of the exhaust port are pressed against each other to form a sealed state. When the pressure of the passage in the multi-channel body increases and the spring is compressed, the inner end of the exhaust pin and the exhaust port are released from the seal, and part of the gas and liquid in the channel body is discharged through the exhaust groove on the side of the exhaust pin and the exhaust pipe joint; when the passage in the multi-channel body is pressurized to drive the exhaust pin to compress the spring into place, the outer end of the exhaust pin and the inner end of the exhaust pipe joint form a seal against each other, that is, the exhaust of gas and liquid stops. The above structure, through the low-pressure exhaust of the exhaust component, effectively prevents the electromagnetic pump from pumping dry air, facilitates water filling operation, and can realize automatic closing of the exhaust component when the water pump pressure reaches the set value, ensuring normal liquid supply pressure, and is relatively stable and reliable.

[0005] The inner and outer ends of the exhaust pin are both tapered, and the inner ends of the exhaust port and the exhaust pipe joint are both tapered to correspond to the ends of the exhaust pin. This structure ensures that the seals at both ends of the exhaust pin are more reliable and stable.

[0006] The valve body module includes a pressure stabilizing component. The passage of the multi-channel main body is divided into a liquid inlet passage connected to the pump interface and a liquid outlet passage connected to the pipe interface. The exhaust port is arranged in the liquid inlet passage. The multi-channel main body is provided with a pressure stabilizing chamber connecting the liquid inlet passage and the liquid outlet passage. The pressure stabilizing chamber is fixed by a fixed cover with a pressure stabilizing deformable silicone plate. In the initial state, the silicone plate forms a seal on the openings of the liquid inlet passage and the liquid outlet passage under the elastic action of the silicone plate itself. When the liquid inlet pressure of the liquid inlet passage increases to push up the silicone plate to deform, the liquid inlet passage and the liquid outlet passage are connected through the cavity formed on the inner side of the silicone plate after deformation, that is, the pump interface is connected to the pipe interface. The structure of the pressure stabilizing component is a purely mechanical structure without electromagnetic control. The structure is relatively simple and easy to use. It can effectively stabilize the flow rate of the electromagnetic pump, reduce the vibration and noise of the electromagnetic pump during operation, and improve the user experience.

[0007] The inlet diameter of the pressure-stabilizing chamber corresponding to the liquid inlet passage is smaller than the inlet diameter of the pressure-stabilizing chamber corresponding to the liquid outlet passage. This structure improves the effect of pressure-stabilizing flow rate control.

[0008] The fixing cover is previously sleeved and then fixed to the outer wall of the pressure-stabilizing chamber of the multi-channel body by stamping, and a space is formed between the fixing cover and the silicone plate to accommodate the deformation of the silicone plate. This structure ensures that the deformation of the silicone plate is stable and reliable.

[0009] The cam is secured to the lip of the valve body with a pressure regulating spring which is secured to the lip of the valve body and presses against the valve body to maintain the seal. Through this structure, when the pressure of the brewing device of the coffee machine exceeds the set maximum pressure, the pressure relief valve assembly automatically opens to relieve pressure, reducing the risk of powder explosion due to excessive pressure during the brewing process and extending the service life of the electromagnetic pump and the product.

[0010] The pressure in the liquid inlet passage, caused by the fluid pushing up and deforming the silicone plate of the pressure-stabilizing assembly, is greater than the pressure in the liquid inlet passage required to seal the outer end of the exhaust pin in the exhaust assembly against the inner end of the exhaust pipe joint. This structure ensures that the liquid supply pressure in the multi-channel body meets the requirements of the brewing device.

[0011] Both the exhaust pipe connector of the exhaust assembly and the pressure relief pipe connector of the pressure relief assembly have external pipelines that guide the wastewater to the same wastewater box. This structure facilitates the centralized collection and treatment of wastewater.

[0012] The working method of the exhaust pressure-stabilizing safety valve body module is as follows: when the electromagnetic pump is working, the fluid enters the liquid inlet channel through the pump interface of the multi-channel main body. Since the pressure in the liquid inlet channel at the time of startup is not sufficient to lift the silicone plate of the pressure-stabilizing component, the liquid inlet channel and the liquid outlet channel are not connected. The exhaust pin is pushed up by the pressure at the inner end of the exhaust port, and a part of the fluid and gas in the liquid inlet channel is discharged to the outside along the exhaust groove on the side of the exhaust pin and the exhaust pipe joint; as the pump pressure increases until the outer end of the exhaust pin and the inner end of the exhaust pipe joint are sealed, the pressure in the liquid inlet channel increases and pushes up the silicone plate of the pressure-stabilizing component, so that the liquid inlet channel and the liquid outlet channel form a pressure-stabilized communication state, and a pressure-stabilized liquid supply is formed from the pipe interface to the boiler pipe of the coffee machine; when the pressure of the brewing device of the coffee machine is too high or the boiler pipe is blocked, the sealing plug of the pressure relief component is pushed up and the pressure regulating spring is compressed, that is, the sealing plug and the inner end of the pressure relief port are released, and the gas and liquid are discharged from the pressure relief pipe joint, thereby realizing the pressure relief operation.

[0013] When the pressure relief pipe joint of the pressure relief assembly is disassembled relative to the pressure relief port and the pressure relief port is connected to an external suction device, reverse suction and dredging operations are performed on the boiler pipe and brewing device of the coffee machine.

[0014] The present invention boasts a rational overall structure, effectively resolving the issue of the electromagnetic pump failing to pump water when the water tank is empty. Furthermore, the flow rate within the channel is more stable, effectively reducing vibration and noise from the electromagnetic pump and improving user comfort. Furthermore, the automatic pressure relief function effectively reduces the risk of high-pressure brewing device powder and pipe bursts, thereby increasing the safety and service life of the coffee machine. It is suitable for use as a valve module for various coffee machines, or as an improvement to similar structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the connection between the electromagnetic pump and the multi-channel body of the present invention.

[0016] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the flow state of the multi-channel body.

[0017] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the flow state of the multi-channel body.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the exhaust pin of the present invention.

[0019] Figure 5 It is a schematic diagram of the principle of pipe connection in the coffee machine of the present invention.

[0020] The serial numbers and names in the figure are: 1. Electromagnetic pump, 2. Multi-channel main body, 201. Pump interface, 202. Pipe interface, 203. Exhaust port, 204. Liquid inlet passage, 205. Liquid outlet passage, 206. Pressure stabilizing chamber, 207. Pressure relief port, 3. Exhaust assembly, 301. Exhaust pin, 302. Spring, 303. Exhaust pipe joint, 4. Pressure stabilizing assembly, 401. Fixed cover, 402. Silicone plate, 5. Pressure relief assembly, 501. Sealing plug, 502. Pressure regulating spring, 503. Pressure relief pipe joint, 6. Boiler, 7. Brewing device, 8. Waste water box. Implementation Method

[0021] The present invention will now be further described with reference to the accompanying drawings. Figure 1-Figure 5 As shown, the exhaust pressure-stabilizing safety valve body module includes a multi-channel main body 2 and an exhaust component 3. The multi-channel main body is provided with a pump interface 201 connected to the electromagnetic pump 1 and a pipe interface 202 connected to the boiler 6 pipe of the coffee machine. The multi-channel main body is provided with a liquid inlet passage 204 connected to the pump interface and a liquid outlet passage 205 connected to the pipe interface. An exhaust port 203 is provided in the liquid inlet passage, and the exhaust port is provided with an exhaust component 3. The exhaust component includes an exhaust pin 301, a spring 302, and an exhaust pipe joint 303. The inner and outer ends of the exhaust pin are both cone-shaped, and the inner end of the exhaust port and the inner end of the exhaust pipe joint are both formed with cones corresponding to the two ends of the exhaust pin. The exhaust pin sliding limit is located at the inner end of the exhaust port, and the exhaust pipe joint is fixed to the outer end of the exhaust port by a snap, and the exhaust pipe joint is sleeved with a sealing ring to form a sealed connection with the exhaust port. A spring is arranged between the exhaust pin and the inner end of the exhaust pipe joint, and an exhaust groove 3011 is provided on the side of the exhaust pin, which is conducive to controlling the amount of exhaust; under the initial action of the spring, the inner end of the exhaust pin and the inner end of the exhaust port are pressed against each other to form a sealed state. When the inner end of the exhaust pin is affected by the pressure of the liquid inlet passage in the multi-channel main body and compresses the spring, the inner end of the exhaust pin and the exhaust port are unsealed, and part of the gas and liquid in the channel main body is discharged to the outside through the exhaust groove on the side of the exhaust pin and the exhaust pipe joint. When the liquid inlet passage in the multi-channel main body is pressurized to drive the exhaust pin to compress the spring in place, the outer end of the exhaust pin and the inner end of the exhaust pipe joint form a seal against each other, that is, the gas and liquid are stopped from being discharged, so that the required liquid supply pressure is maintained in the liquid inlet passage.

[0022] The valve body module includes a pressure-stabilizing assembly 4. The multi-channel body 2 is provided with a pressure-stabilizing cavity 206 connecting a liquid inlet passage 204 and a liquid outlet passage 205. The opening of the pressure-stabilizing cavity corresponding to the liquid inlet passage is smaller than the opening of the pressure-stabilizing cavity corresponding to the liquid outlet passage, and the liquid inlet and liquid outlet passages are arranged in parallel. The pressure-stabilizing cavity is fixed by a fixed cover 401, which is provided with a pressure-stabilizing, deformable silicone plate 402. The fixed cover is previously connected to the outer wall of the pressure-stabilizing cavity of the multi-channel body and then stamped and fixed. A space is formed between the fixed cover and the silicone plate to accommodate the deformation of the silicone plate. In the initial state, the silicone plate forms a tight seal against the openings of the liquid inlet and liquid outlet passages due to its own elastic action. When the liquid inlet pressure increases to the point where it pushes up the silicone plate to deform, the liquid inlet and liquid outlet passages are connected through the cavity formed inside the deformed silicone plate, thereby connecting the pump interface 201 with the pipe interface 202. Because the silicone plate always has a deformation force, it can provide a buffering and shock-absorbing effect, effectively reducing vibration and noise for the electromagnetic pump 1. Furthermore, the pressure in the liquid inlet passage caused by the silicone plate of the pressure stabilizing assembly being pushed up and deformed by the fluid is greater than the pressure in the liquid inlet passage required for the outer end of the exhaust pin in the exhaust assembly to abut and seal against the inner end of the exhaust pipe joint, thereby ensuring that the exhaust assembly and the pressure stabilizing assembly operate stably at their respective corresponding pressures.

[0023] The valve body module includes a pressure relief component 5, a pressure relief port 207 is provided in the liquid outlet passage 205 in the multi-channel main body 2, and a pressure relief component is provided at the pressure relief port. The pressure relief component includes a sealing plug 501, a pressure regulating spring 502, and a pressure relief pipe joint 503. The sealing plug is limited to slide at the inner end of the pressure relief port. The pressure relief pipe joint is radially sealed with the outer end of the pressure relief port through a sealing ring, and the pressure relief pipe joint and the outer end of the pressure relief port are threaded together; a pressure regulating spring is provided between the outer end of the pressure relief plug and the inner end of the pressure relief pipe joint. Under the action of the pressure regulating spring, the inner end of the pressure relief plug and the inner end of the pressure relief port are pressed tightly together to maintain a seal; when the pressure in the liquid outlet passage at the inner end of the pressure relief port increases and compresses the pressure regulating spring, the inner end of the pressure relief plug and the inner end of the pressure relief port are released from the seal, and the gas and liquid in the liquid outlet passage in the multi-channel body are discharged through the pressure relief pipe joint of the pressure relief port to form a pressure relief state; when the pressure relief pipe joint and the pressure relief port are threadedly adjusted, the sealing force between the pressure relief plug and the inner end of the pressure relief port is adjusted to adjust the pressure value of the pressure relief to meet the pressure relief requirements. The exhaust pipe joint 303 of the exhaust assembly 3 and the pressure relief pipe joint of the pressure relief assembly are both externally piped to the same wastewater box 8, facilitating the centralized collection and treatment of wastewater.

[0024] The exhaust pressure-stabilizing safety valve module operates as follows: When the electromagnetic pump 1 is operating, fluid enters the liquid inlet channel 204 through the pump interface 201 of the multi-channel main body 2. Since the pressure in the liquid inlet channel is insufficient to lift the silicone plate 402 of the pressure-stabilizing assembly 4 at the time of startup, the liquid inlet channel and the liquid outlet channel are not connected. The exhaust pin 301 is lifted up by the pressure at the inner end of the exhaust port 203 and compresses the spring 302. A portion of the fluid and gas in the liquid inlet channel is discharged to the outside through the exhaust groove 3011 on the side of the exhaust pin and the exhaust pipe joint 303, making it difficult for the electromagnetic pump to form an empty pumping state during operation, thereby ensuring normal water filling operation in the later stage. As the pump pressure increases to the point where the outer end of the exhaust pin is sealed against the inner end of the exhaust pipe joint, the pressure in the liquid inlet channel increases to the working pressure, lifting the silicone plate of the pressure-stabilizing assembly, and the liquid inlet channel and the liquid outlet channel 205 are in a stable pressure-connected state. A stable pressure liquid supply is then provided to the boiler 6 pipeline of the coffee machine through the pipe interface 202. When the pressure in the brewing device 7 of the coffee machine is too high or the boiler pipe is blocked, the sealing plug 501 of the pressure relief assembly is pushed up and the pressure regulating spring 502 is compressed, that is, the sealing plug and the inner end of the pressure relief port are released from the seal, and the gas and liquid are discharged from the pressure relief pipe joint 503, realizing the pressure relief operation, which can prevent high temperature, high pressure, pipe burst, powder explosion, and avoid safety hazards to the human body.

[0025] When the brewing device 7 or the boiler pipeline is blocked, the pressure relief pipe joint 503 of the pressure relief assembly 5 is removed and the pressure relief port 207 is connected to an external suction device to achieve reverse suction and unblocking of the boiler 6 pipeline of the coffee machine and the brewing device.

[0026] The above content is intended to illustrate the technical means of the present invention and is not intended to limit the technical scope of the present invention. Those skilled in the art may make obvious improvements or substitutions to the present invention in combination with existing common knowledge, which also fall within the scope of protection of the claims of the present invention.

Claims

1. An exhaust pressure-stabilizing safety valve module, the valve module comprising a multi-channel body (2) and an exhaust assembly (3), the multi-channel body being provided with a pump interface (201) connected to an electromagnetic pump (1) and a pipe interface connected to a pipeline of a boiler (6) of a coffee machine, the multi-channel body being provided with a passage connecting the pump interface and the pipe interface, the passage being provided with an exhaust port (203); characterized in that The exhaust port (203) is provided with the exhaust assembly (3), which includes an exhaust pin (301), a spring (302), and an exhaust pipe joint (303). The exhaust pin is limited in sliding movement at the inner end of the exhaust port, and the exhaust pipe joint is sealed and fixed at the outer end of the exhaust port. The spring is arranged to abut against the inner end of the exhaust pin and the exhaust pipe joint. An exhaust groove (3011) is provided on the side of the exhaust pin. Under the initial action of the spring, the inner end of the exhaust pin abuts against the inner end of the exhaust port to form a sealed state. When the pressure of the passage in the multi-channel body (2) increases and compresses the spring, the inner end of the exhaust pin and the exhaust port are released from the seal, and part of the gas and liquid in the passage body is discharged through the exhaust groove on the side of the exhaust pin and the exhaust pipe joint. When the passage in the multi-channel body is pressurized to drive the exhaust pin to compress the spring into place, the outer end of the exhaust pin and the inner end of the exhaust pipe joint form a seal against each other, that is, the gas and liquid are stopped from being discharged.

2. The exhaust pressure stabilizing safety valve body module according to claim 1 is characterized in that The inner end and the outer end of the exhaust pin (301) are both in the shape of a cone head, and the inner end of the exhaust port (203) and the inner end of the exhaust pipe joint (303) are both in the shape of a cone mouth corresponding to the two ends of the exhaust pin.

3. The exhaust pressure stabilizing safety valve body module according to claim 1 is characterized in that The valve body module comprises a pressure stabilizing component (4); the passage of the multi-channel body (2) is divided into a liquid inlet passage (204) connected to the pump interface (201) and a liquid outlet passage (205) connected to the pipe interface (202); the exhaust port (203) is arranged in the liquid inlet passage; the multi-channel body is provided with a pressure stabilizing chamber (206) connected to the liquid inlet passage and the liquid outlet passage; the pressure stabilizing chamber is provided with a pressure stabilizing deformable silicone plate (402) fixed in position by a fixed cover (401); in an initial state, the silicone plate forms a tight seal on the openings of the liquid inlet passage and the liquid outlet passage under the elastic action of the silicone plate itself; when the liquid inlet pressure of the liquid inlet passage increases to push up the silicone plate to deform, the liquid inlet passage and the liquid outlet passage are connected through the cavity formed on the inner side of the deformed silicone plate, that is, the pump interface is connected to the pipe interface.

4. The exhaust pressure stabilizing safety valve body module according to claim 3 is characterized in that The opening diameter of the pressure stabilizing chamber (206) corresponding to the liquid inlet passage (204) is smaller than the opening diameter of the pressure stabilizing chamber corresponding to the liquid outlet passage (205).

5. The exhaust pressure stabilizing safety valve body module according to claim 3 is characterized in that The fixed cover (401) and the outer wall of the pressure stabilizing chamber (206) of the multi-channel body (2) are previously sleeved and then fixed by stamping, and a space that adapts to the deformation of the silicone plate is formed between the fixed cover and the silicone plate (402).

6. The exhaust pressure stabilizing safety valve body module according to claim 3 is characterized in that The valve body module comprises a pressure relief component (5), a pressure relief port (207) is provided in a passage in the multi-channel body (2) near the pipe interface (202), the pressure relief component is arranged at the pressure relief port, the pressure relief component comprises a sealing plug (501), a pressure regulating spring (502), and a pressure relief pipe joint (503), the sealing plug is limited in sliding movement at the inner end of the pressure relief port, the pressure relief pipe joint is sealed and fixed at the outer end of the pressure relief port, and the pressure relief pipe joint and the outer end of the pressure relief port are threadedly matched, and the outer end of the pressure relief plug is connected to the pressure relief port. The pressure regulating spring is arranged between the inner ends of the pressure pipe joints, and under the action of the pressure regulating spring, the inner end of the pressure relief plug and the inner end of the pressure relief port are pressed tightly to maintain a seal; when the pressure at the inner end of the pressure relief port increases and compresses the pressure regulating spring, the inner ends of the pressure relief plug and the inner ends of the pressure relief port are released from the seal, and the gas and liquid in the passage inside the multi-channel body are discharged through the pressure relief pipe joint of the pressure relief port to form a pressure relief state; when the threads of the pressure relief pipe joint and the pressure relief port are adjusted, the pressing and sealing force between the pressure relief plug and the inner end of the pressure relief port is adjusted.

7. The exhaust pressure stabilizing safety valve module according to claim 6 is characterized in that The pressure in the liquid inlet passage (204) caused by the silicone plate (402) of the pressure stabilizing component (4) being lifted and deformed by the fluid is greater than the pressure in the liquid inlet passage required when the outer end of the exhaust pin (301) in the exhaust component (3) and the inner end of the exhaust pipe joint (303) are tightly sealed.

8. The exhaust pressure stabilizing safety valve module according to claim 6 is characterized in that The exhaust pipe joint (303) of the exhaust assembly (3) and the pressure relief pipe joint (503) of the pressure relief assembly (5) are both externally piped to the same waste water box (8).

9. A method for operating the exhaust pressure stabilizing safety valve module according to claim 6, characterized in that The working method is as follows: when the electromagnetic pump (1) is working, the fluid enters the liquid inlet channel (204) from the pump interface (201) of the multi-channel body (2); since the pressure in the liquid inlet channel is not sufficient to lift up the silicone plate (402) of the voltage stabilizing component (4) when it is just started, the liquid inlet channel and the liquid outlet channel (205) are not connected, and the exhaust pin (301) is lifted up under the pressure at the inner end of the exhaust port (203), and a part of the fluid and gas in the liquid inlet channel are discharged to the outside along the exhaust groove (3011) on the side of the exhaust pin and the exhaust pipe joint (303); as the pump pressure increases to the outside of the exhaust pin, the exhaust pin (301) is discharged to the outside of the exhaust pin. When the end of the pressure regulating component (201) is sealed with the inner end of the exhaust pipe joint, the pressure in the liquid inlet channel increases and lifts up the silicone plate of the pressure stabilizing component, so that the liquid inlet channel and the liquid outlet channel are in a pressure-stabilizing communication state, and the pipe joint (202) forms a pressure-stabilizing liquid supply to the boiler (6) pipeline of the coffee machine; when the pressure of the brewing device (7) of the coffee machine is too high or the boiler pipeline is blocked, the sealing plug (501) of the pressure relief component (5) is lifted up to compress the pressure regulating spring (502), that is, the sealing plug and the inner end of the pressure relief port (207) are released from the seal, and gas and liquid are discharged from the pressure relief pipe joint (503), thereby realizing the pressure relief operation.

10. The working method of the exhaust pressure stabilizing safety valve module according to claim 9, characterized in that When the pressure relief pipe joint (503) of the pressure relief assembly (5) is disassembled relative to the pressure relief port (207) and the pressure relief port is connected to an external suction device, a reverse suction and dredging operation is performed on the boiler (6) pipeline and the brewing device (7) of the coffee machine.

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