Exhaust pressure stabilizing safety type valve body module

Abstract

The utility model relates to an exhaust pressure stabilizing safety type valve body module, and aims to solve the problems that the pressure stabilizing and releasing structure of the conventional similar coffee machine is relatively complicated, 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 utility model relates to coffee machine pipeline system, it is a exhaust pressure stabilizing safe valve body module. BACKGROUND

[0002] Coffee machine is a kind of electric equipment for coffee making, generally divided into semi-automatic and full-automatic two kinds, wherein semi-automatic coffee machine needs to rely on manual operation to grind powder, press powder, fill powder, brew, manual removal of residue, full-automatic coffee machine is a kind of coffee machine that is brewed in the whole process of preheating, cleaning, grinding, pressing, brewing, etc., and is brewed according to scientific data and program, and coffee can be obtained by pressing lightly.With the improvement of people's living quality and the popularization of coffee culture, the functional requirements of coffee machine are increasingly diversified.Many people prefer espresso coffee, but high-pressure coffee machine is often prone to unstable coffee flow rate, excessive water pump vibration and noise during use;The amount of espresso coffee is not easy to control, when the capacity exceeds the standard, brewing pressure is too high, which causes powder explosion and pipe explosion during brewing, and long-term high-pressure brewing has a great impact on brewing system and service life of machine.In order to solve the technical problem, such as Chinese patent documents published on June 4, 2021, application number 202021961490.9, utility model name "water boiler pressure relief and energy recovery system of commercial coffee machine", and such as Chinese patent documents published on August 10, 2021, application number 202110565430.8, invention name "espresso coffee brewing pipeline system for automatic vending coffee machine".The above two products disclose pressure monitoring, electromagnetic pressure relief valve and other control to realize pressure relief and pressure stabilization operation, to ensure the safety of equipment pressure, but the overall structure is still complex, the precision requirement of electronic control is high, the cost is large, and when there is no water in the water tank, the water pump is easy to appear not to fill water after emptying.For this reason, it is necessary to improve the structure of the boiler front-end pipeline system of the existing high-pressure coffee machine to improve the user experience of high-pressure coffee machine in use. SUMMARY

[0003] To overcome the above shortcomings, the utility model aims at providing an exhaust pressure stabilizing safe valve body module to the field, which solves the technical problems of the existing similar coffee machine, such as complex pressure stabilization and pressure relief structure, high cost, and easy to appear not to fill water after emptying of electromagnetic pump when there is no water in the water tank.The purpose is realized through the following technical scheme.

[0004] The exhaust pressure stabilizing safety valve module comprises a multi-channel main body, an exhaust assembly, a pump interface connected with an electromagnetic pump, and a pipe interface connected with a boiler pipe of a coffee machine. A passage is arranged in the multi-channel main body and is connected with the pump interface and the pipe interface. An exhaust port is arranged in the passage. The exhaust port is provided with the exhaust assembly. The exhaust assembly comprises an exhaust pin, a spring, and an exhaust pipe joint. The exhaust pin is slidingly limited in the inner end of the exhaust port. The exhaust pipe joint is sealingly fixed to the outer end of the exhaust port. The spring is arranged between the inner end of the exhaust pin and the inner end of the exhaust pipe joint. The side surface of the exhaust pin is provided with an exhaust groove. Under the initial action of the spring, the inner end of the exhaust pin is in abutment with the inner end of the exhaust port to form a sealing state. When the inner end of the exhaust pin is compressed by the increased pressure in the passage of the multi-channel main body and the spring is compressed, the inner end of the exhaust pin is unsealed from the exhaust port. Part of the gas-liquid in the multi-channel main body is discharged through the exhaust groove in the side surface of the exhaust pin and the exhaust pipe joint. When the pressure in the passage of the multi-channel main body is increased to drive the exhaust pin to compress the spring to the position, the outer end of the exhaust pin is in abutment with the inner end of the exhaust pipe joint to form a sealing state, that is, the gas-liquid discharge is stopped. The above structure realizes low-pressure exhaust through the exhaust assembly, thereby effectively preventing the empty pumping phenomenon of the electromagnetic pump, facilitating the water filling operation, and realizing the automatic closing of the exhaust assembly when the water pumping pressure reaches the set value, thereby ensuring the normal liquid supply pressure and realizing stable and reliable operation.

[0005] The inner end and the outer end of the exhaust pin are both conical. The inner end of the exhaust port and the inner end of the exhaust pipe joint are both conical. Through the structure, the two ends of the exhaust pin are reliably and stably sealed.

[0006] The valve module comprises a pressure stabilizing assembly. The passage of the multi-channel main body is divided into a liquid inlet passage connected with the pump interface and a liquid outlet passage connected with the pipe interface. The exhaust port is arranged in the liquid inlet passage. The multi-channel main body is provided with a pressure stabilizing cavity connected with the liquid inlet passage and the liquid outlet passage. The pressure stabilizing cavity is provided with a pressure stabilizing deformed silica gel plate limited and fixed by a fixed cover. In the initial state, the silica gel plate is in sealing abutment with the liquid inlet passage and the liquid outlet passage under the elastic action of the silica gel plate itself. When the liquid inlet pressure of the liquid inlet passage is increased to lift the silica gel plate to be deformed, the liquid inlet passage and the liquid outlet passage are connected through the cavity formed by the deformed inner side of the silica gel plate, that is, the pump interface and the pipe interface are connected. The structure of the pressure stabilizing assembly is a pure mechanical structure without electromagnetic control. The structure is simple and easy to use. The pressure stabilizing assembly can effectively stabilize and control 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 diameter of the passage of the liquid inlet passage corresponding to the pressure stabilizing cavity is smaller than the diameter of the passage of the liquid outlet passage corresponding to the pressure stabilizing cavity. Through the structure, the effect of stabilizing and controlling the flow rate is improved.

[0008] The fixed cover is connected with the outer wall of the pressure stabilizing cavity of the multi-channel main body in a sleeved manner and is fixed by stamping, and a space for adapting to the deformation of the silica gel plate is formed between the fixed cover and the silica gel plate.

[0009] The valve body module comprises a pressure relief assembly, a pressure relief port is arranged in the passage of the multi-channel main body close to the pipe interface, and the pressure relief assembly is arranged at the pressure relief port; the pressure relief assembly comprises a sealing plug, a pressure adjusting spring and a pressure relief pipe joint; the sealing plug is slidably limited in the inner end of the pressure relief port; the pressure relief pipe joint is sealingly fixed to the outer end of the pressure relief port and is in threaded connection with the outer end of the pressure relief port; the pressure adjusting spring is arranged 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 adjusting spring, the inner end of the pressure relief plug is tightly abutted against the inner end of the pressure relief port to keep sealing; when the pressure of the inner end of the pressure relief port increases and compresses the pressure adjusting spring, the inner end of the pressure relief plug is separated from the inner end of the pressure relief port to release the sealing; the gas and liquid in the passage of the multi-channel main 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 adjusted in threaded connection, the abutting sealing force of the inner end of the pressure relief plug and the inner end of the pressure relief port is adjusted. Through the structure, when the pressure of the brewing device of the coffee machine exceeds the maximum pressure, the pressure relief valve assembly automatically opens to release pressure, reduces the risk of powder explosion due to high pressure in the brewing process, prolongs the service life of the electromagnetic pump and the product.

[0010] The inner pressure of the liquid inlet passage when the silica gel plate of the pressure stabilizing assembly is lifted and deformed by the fluid is greater than the inner pressure of the liquid inlet passage required when the outer end of the exhaust pin in the exhaust assembly is tightly abutted against the inner end of the exhaust pipe joint to keep sealing. Through the structure, the liquid supply pressure in the multi-channel main body meets the requirements of the brewing device.

[0011] The exhaust pipe joint of the exhaust assembly and the pressure relief pipe joint of the pressure relief assembly are both connected with pipelines to guide the same wastewater box. Through the structure, the wastewater is conveniently collected and treated.

[0012] The overall structure is relatively reasonable, effectively solves the problem that the water tank is easy to cause the electromagnetic pump to be empty and not to draw water when there is no water, and the flow rate control in the passage is relatively stable, effectively reduces the vibration and noise of the electromagnetic pump, and improves the comfort during use. In addition, the function of automatic pressure relief is provided, the risk of powder explosion and pipe explosion of the brewing device is effectively reduced, the safety and service life of the coffee machine are improved. It is suitable to be used as a valve body module of various coffee machines or to improve similar structures. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structure diagram of the electromagnetic pump and the multi-channel main body.

[0014] Figure 2 is Figure 1Schematic diagram of the cross-sectional structure of the flow state of the multi-channel body.

[0015] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the flow state of the multi-channel body.

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the exhaust pin of the present utility model.

[0017] Figure 5 It is a schematic diagram of the principle of pipe connection in the coffee machine of the present invention.

[0018] 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

[0019] The present invention will now be further described with reference to the accompanying drawings. Figures 1-5 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.

[0020] The valve body module includes a pressure stabilizing assembly 4, and the multi-channel body 2 is provided with a pressure stabilizing cavity 206 communicating with an inlet passage 204 and an outlet passage 205. The diameter of the inlet passage corresponding to the opening of the pressure stabilizing cavity is smaller than the diameter of the outlet passage corresponding to the opening of the pressure stabilizing cavity, and the inlet passage and the outlet passage are arranged in parallel. The pressure stabilizing cavity is provided with a pressure stabilizing deformed silica gel plate 402 limited and fixed by a fixed cover 401. The fixed cover is connected with the outer wall of the pressure stabilizing cavity of the multi-channel body and is fixed by stamping after connection, and a space suitable for the deformation of the silica gel plate is formed between the fixed cover and the silica gel plate. In the initial state, the inlet passage and the outlet passage are tightly sealed by the silica gel plate under the elastic action of the silica gel plate itself. When the inlet pressure of the inlet passage increases to lift the silica gel plate, the inlet passage and the outlet passage are communicated through the cavity formed on the inner side of the deformed silica gel plate, that is, the pump interface 201 and the pipe interface 202 are communicated. Because the silica gel plate always has a deformation force, it can play a buffering and damping effect, and effectively reduce the vibration and noise of the electromagnetic pump 1. Further, the inner pressure of the inlet passage of the pressure stabilizing assembly when the silica gel plate is lifted and deformed is greater than the inner pressure required for the outer end of the exhaust pin in the exhaust assembly to tightly seal the inner end of the exhaust pipe joint, so as to ensure that the exhaust assembly and the pressure stabilizing assembly work stably under their respective corresponding pressures.

[0021] The valve body module includes a pressure stabilizing assembly 4, and the multi-channel body 2 is provided with a pressure stabilizing cavity 206 communicating with an inlet passage 204 and an outlet passage 205. The diameter of the inlet passage corresponding to the opening of the pressure stabilizing cavity is smaller than the diameter of the outlet passage corresponding to the opening of the pressure stabilizing cavity, and the inlet passage and the outlet passage are arranged in parallel. The pressure stabilizing cavity is provided with a pressure stabilizing deformed silica gel plate 402 limited and fixed by a fixed cover 401. The fixed cover is connected with the outer wall of the pressure stabilizing cavity of the multi-channel body and is fixed by stamping after connection, and a space suitable for the deformation of the silica gel plate is formed between the fixed cover and the silica gel plate. In the initial state, the inlet passage and the outlet passage are tightly sealed by the silica gel plate under the elastic action of the silica gel plate itself. When the inlet pressure of the inlet passage increases to lift the silica gel plate, the inlet passage and the outlet passage are communicated through the cavity formed on the inner side of the deformed silica gel plate, that is, the pump interface 201 and the pipe interface 202 are communicated. Because the silica gel plate always has a deformation force, it can play a buffering and damping effect, and effectively reduce the vibration and noise of the electromagnetic pump 1. Further, the inner pressure of the inlet passage of the pressure stabilizing assembly when the silica gel plate is lifted and deformed is greater than the inner pressure required for the outer end of the exhaust pin in the exhaust assembly to tightly seal the inner end of the exhaust pipe joint, so as to ensure that the exhaust assembly and the pressure stabilizing assembly work stably under their respective corresponding pressures.

[0022] The working method of the exhaust pressure stabilizing safety valve body module is as follows: when the electromagnetic pump 1 works, the fluid enters the liquid inlet channel 204 from the pump interface 201 of the multi-channel main body 2, and since the pressure in the liquid inlet channel is insufficient to lift the silica gel plate 402 of the pressure stabilizing assembly 4 at the start, the liquid inlet channel and the liquid outlet channel are not communicated, the exhaust pin 301 is lifted and the spring 302 is compressed under the pressure of the inner end of the exhaust port 203, part of the fluid and gas in the liquid inlet channel is discharged outside along the exhaust groove 3011 on the side of the exhaust pin and the exhaust pipe joint 303, so that the empty pumping state is not easy to form when the electromagnetic pump works, and the normal water feeding operation in the later period is ensured. With the increase of the pump pressure to the outer end of the exhaust pin and the inner end of the exhaust pipe joint, the pressure in the liquid inlet channel increases to the working pressure, and the silica gel plate of the pressure stabilizing assembly is lifted, the liquid inlet channel and the liquid outlet channel 205 form a pressure stabilizing communication state, and the pipe interface 202 forms a pressure stabilizing liquid supply to the boiler 6 pipeline of the coffee machine. When the brewing device 7 of the coffee machine has excessive pressure or the boiler pipeline is blocked, the sealing plug 501 of the pressure relief assembly is lifted and compressed, that is, the sealing plug and the inner end of the pressure relief port are unsealed, and the gas-liquid is discharged from the pressure relief pipe joint 503, realizing the pressure relief operation, which can prevent high temperature, high pressure, pipe explosion and powder explosion, and avoid the safety hazard to the human body.

[0023] When the brewing device 7 or the boiler pipeline is blocked, the pressure relief pipe joint 503 of the pressure relief assembly 5 is disassembled, and the pressure relief port 207 is connected to the external suction device, realizing the reverse suction dredging operation of the boiler 6 pipeline and the brewing device of the coffee machine.

[0024] The above is intended to explain the technical means of the present application, not to limit the technical range of the present application. Those skilled in the art can make obvious improvements or replacements to the present application combined with the existing common knowledge, which also falls within the protection scope of the claims of the present application.

Claims

1. An exhaust pressure stabilizing safety valve module, comprising a multi-channel main body (2), an exhaust assembly (3), a pump interface (201) connected to an electromagnetic pump (1) in the multi-channel main body, and a pipe interface connected to a pipe of a boiler (6) of a coffee machine, a passage connecting the pump interface and the pipe interface in the multi-channel main body, and an exhaust port (203) in the passage; 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 slidingly limited at the inner end of the exhaust port, and the exhaust pipe joint is sealingly fixed at the outer end of the exhaust port. The spring is arranged between the inner end of the exhaust pin and the inner end of the exhaust pipe joint. The side surface of the exhaust pin is provided with an exhaust groove (3011). Under the initial action of the spring, the inner end of the exhaust pin is in abutting sealing with the inner end of the exhaust port. When the inner end of the exhaust pin is compressed by the increased pressure in the inner passage of the multi-channel body (2) and the spring, the inner end of the exhaust pin is unsealed from the exhaust port, and part of the gas-liquid in the inner passage of the multi-channel body is discharged through the exhaust groove on the side surface of the exhaust pin and the exhaust pipe joint. When the inner passage of the multi-channel body is pressurized to drive the exhaust pin to compress the spring to the position, the outer end of the exhaust pin is in abutting sealing with the inner end of the exhaust pipe joint, i.e. the gas-liquid discharge is stopped.

2. The exhaust pressure stabilizing safety valve module according to claim 1, wherein The inner end and the outer end of the exhaust pin (301) are both conical heads, and the inner end of the exhaust port (203) and the inner end of the exhaust pipe joint (303) are both conical ports corresponding to the two ends of the exhaust pin.

3. The exhaust pressure regulating safety valve module according to claim 1, wherein The valve body module includes a pressure stabilizing assembly (4). The inner passage (204) 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 cavity (206) connected to the liquid inlet passage and the liquid outlet passage. The pressure stabilizing cavity is provided with a pressure stabilizing deformed silica gel plate (402) through a fixed cover (401). In the initial state, the silica gel plate is in abutting sealing with the inner passage of the liquid inlet passage and the liquid outlet passage under the elastic action of the silica gel plate itself. When the liquid inlet pressure of the liquid inlet passage increases to lift the silica gel 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 silica gel plate, i.e. the pump interface and the pipe interface are connected.

4. The exhaust pressure stabilizing safety valve module according to claim 3, wherein The inner passage (204) of the multi-channel body (2) corresponding to the pressure stabilizing cavity (206) has a smaller diameter than the inner passage (205) of the multi-channel body corresponding to the pressure stabilizing cavity.

5. The exhaust pressure regulating safety valve module according to claim 3, wherein The fixed cover (401) is connected to the outer wall of the pressure stabilizing cavity (206) of the multi-channel body (2) through a sleeve connection and is then stamped and fixed. A space is formed between the fixed cover and the silica gel plate (402) to accommodate the deformation of the silica gel plate.

6. The exhaust pressure regulating safety valve module according to claim 3, wherein The valve body module includes a pressure relief assembly (5), a pressure relief port (207) is arranged in the passage of the multi-channel main body (2) near the pipe joint (202), and the pressure relief assembly is arranged at the pressure relief port. The pressure relief assembly includes a sealing plug (501), a pressure regulating spring (502), and a pressure relief pipe joint (503). The sealing plug is slidingly limited at the inner end of the pressure relief port, the pressure relief pipe joint is sealingly fixed at the outer end of the pressure relief port, and the pressure relief pipe joint is threadedly connected with the outer end of the pressure relief port. The pressure regulating spring is arranged 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 is tightly sealed with the inner end of the pressure relief port. When the pressure of the inner end of the pressure relief port increases and compresses the pressure regulating spring, the inner end of the pressure relief plug is unsealed with the inner end of the pressure relief port, the gas and liquid in the passage of the multi-channel main 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 of the inner end of the pressure relief plug and the inner end of the pressure relief port is adjusted.

7. The exhaust pressure regulating safety valve module according to claim 6, wherein The inner pressure of the liquid inlet passage (204) deformed by the fluid lifting of the silica gel plate (402) of the pressure stabilizing assembly (4) is greater than the inner pressure of the liquid inlet passage required when the outer end of the exhaust pin (301) of the exhaust assembly (3) and the inner end of the exhaust pipe joint (303) are tightly sealed.

8. The exhaust pressure regulating safety valve module according to claim 6, wherein 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 connected with a pipeline to guide to the same wastewater box (8).

Images