Pipeline valve body of coffee machine

Abstract

A coffee machine pipeline valve body comprises a main body, a first valve rod assembly, a second valve rod assembly and a cam rotating shaft, the main body is provided with an inlet, a first outlet, a second outlet, a first movable cavity, a second movable cavity, a first passage and a second passage, and the cam rotating shaft is rotationally arranged on the main body. According to the coffee machine pipeline valve body, switching between the first channel and the second channel is achieved by rotating the cam rotating shaft, when the first channel is opened, pressure relief of a pot body can be achieved, and when the second channel is opened, steam or water can be discharged; in addition, when the first channel is opened, the cam rotating shaft abuts against the microswitch and sends a signal to the electric control board to enable the water pump not to work and the cooker body not to be heated, and when the second channel is opened, the cam rotating shaft loosens the microswitch and sends a signal to the electric control board to enable the water pump to work and the cooker body to be heated, and on-off of a waterway or steam is achieved. The functions can be completed by one valve body, and a plurality of valve bodies are not required to be matched with an electromagnetic valve for use, so that the cost is lower, and the occupied volume space is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a pipeline valve body of a coffee machine. Background Art

[0002] Existing coffee machines require the use of multiple valve bodies and solenoid valves to achieve pipeline opening and closing, switching or pressure relief. That is, the opening and closing of the water or steam channel needs to be controlled by the solenoid valve, the exhaust steam needs to be discharged through the steam valve, and the pressure relief needs to be carried out by the pressure relief valve. The steam valve and the pressure relief valve need to be switched frequently, so the cost is high and a large volume space is occupied.

[0003] Therefore, further improvements are necessary Utility Model Content

[0004] The purpose of the utility model is to provide a coffee machine pipeline valve body with simple structure, low cost, small space occupation, multiple functions and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A coffee machine pipeline valve body designed for this purpose includes a main body, characterized in that it also includes a first valve stem assembly, a second valve stem assembly and a cam shaft, the main body is provided with an inlet, a first outlet, a second outlet, a first active chamber, a second active chamber, a first passage and a second passage, the cam shaft is rotatably arranged on the main body, the first valve stem assembly closes the first passage when in a pending state, and the second valve stem assembly closes the second passage when in a pending state; when the cam shaft rotates to a closed position, it pushes the first valve stem assembly to move upward on the first active chamber to open the first passage, and the inlet is connected to the first outlet through the first passage; when the cam shaft rotates to an open position, it pushes the second valve stem assembly to move upward on the second active chamber to open the second passage, and the inlet is connected to the second outlet through the second passage.

[0006] A micro switch is provided on the main body, and an electric control board is provided on the coffee machine. The micro switch is electrically connected to the electric control board. When the cam shaft rotates to the closed position, it acts on the micro switch, and when the cam shaft rotates to the open position, it disengages from the micro switch.

[0007] It also includes a first elastic member and a second elastic member, the first elastic member is arranged between the first valve stem assembly and the main body, and the second elastic member is arranged between the second valve stem assembly and the main body. The first valve stem assembly moves downward on the first active cavity under the elastic force of the first elastic member to reset to the pending state, and the second valve stem assembly moves downward on the second active cavity under the elastic force of the second elastic member to reset to the pending state.

[0008] The first valve stem assembly includes a first valve stem and a first sealing ring. The first valve stem passes through the first sealing ring. The first valve stem is provided with a first closing portion. The first passage includes a main channel provided on the main body and a first channel and a second channel provided on the first movable chamber. The first channel and the second channel are provided on the upper and lower sides of the first sealing ring, respectively. The main channel is connected to the first channel, and the second channel is connected to the first outlet.

[0009] When the first valve stem is in a pending state, the first closing portion and the first sealing ring fit together, and the first channel and the second channel are not connected to each other. When the cam shaft rotates to a closed position, it pushes the first valve stem to move upward on the first movable chamber, so that a first gap is formed between the first closing portion and the first sealing ring, and the first channel is connected to the second channel through the first gap, so that the inlet is connected to the first outlet.

[0010] The second valve stem assembly includes a second valve stem and a second sealing ring, the second valve stem passes through the second sealing ring, and a second closing portion is provided on the second valve stem. The second passage includes a main channel provided on the main body, a third channel provided on the first active chamber, and a fourth channel and a fifth channel provided on the second active chamber. The fourth channel and the fifth channel are respectively provided on the upper and lower sides of the second sealing ring. The main channel, the third channel, and the fourth channel are connected in sequence, and the fifth channel is connected to the second outlet.

[0011] When the second valve stem is in the waiting state, the second closing portion and the second sealing ring fit together, and the fourth channel and the fifth channel are not connected to each other. When the cam shaft rotates to the open position, it pushes the second valve stem to move upward on the second movable chamber, so that a second gap is formed between the second closing portion and the second sealing ring, and the fourth channel is connected to the fifth channel through the second gap, so that the inlet is connected to the second outlet.

[0012] The outer sides of the cam shaft are respectively provided with a first convex active part, a second convex active part and a third convex active part, and the micro switch is provided with a trigger part; when the cam shaft rotates to the closed position, the first convex active part acts on the lower end of the first valve stem to push the first valve stem to move upward, and the third convex active part acts on the trigger part; when the cam shaft rotates to the open position, the second convex active part acts on the lower end of the second valve stem to push the second valve stem to move upward, and the third convex active part disengages from the trigger part.

[0013] A first through hole is provided at the bottom of the first active cavity, a second through hole is provided at the bottom of the second active cavity, the lower end of the first valve stem extends out of the first active cavity through the first through hole, and the lower end of the second valve stem extends out of the second active cavity through the second through hole; a third sealing ring is sleeved on the lower part of the first valve stem, and the third sealing ring is located between the first valve stem and the side wall of the first active cavity; a fourth sealing ring is sleeved on the lower part of the second valve stem, and the fourth sealing ring is located between the second valve stem and the side wall of the second active cavity.

[0014] A push rod assembly is provided at the bottom of the main body, and the push rod assembly includes a push rod and a third elastic member. The third elastic member is provided between the push rod and the main body. A concave-convex matching portion is provided on the outer side of the cam shaft. When the cam shaft rotates, it acts on the push rod through the concave-convex matching portion to compress the third elastic member. When the concave-convex matching portion disengages from the push rod, the push rod is reset under the elastic force of the third elastic member.

[0015] The coffee machine comprises a pot body for heating water, the pot body is connected to an inlet through a pipeline, a first outlet is connected to an exhaust pipe, and a second outlet is connected to a steam pipe.

[0016] The main body includes a valve body, an upper valve cover and a bottom cover. The upper valve cover is installed on the top of the valve body, and the bottom cover is installed on the bottom of the valve body. The inlet and the second outlet are arranged at one end of the valve body, and the first outlet is arranged at the other end of the valve body. A first active cavity and a second active cavity are formed between the valve body and the upper valve cover, and a rotating mounting hole is formed between the valve body and the bottom cover. The cam shaft is rotatably mounted on the rotating mounting hole.

[0017] The coffee machine pipeline valve body of the utility model realizes switching between the first passage and the second passage by rotating the cam shaft. When the first passage is opened, the pressure of the pot body can be relieved, and when the second passage is opened, steam or water can be discharged. In addition, when the first passage is opened, the cam shaft will press against the micro switch, and send a signal to the electronic control board to stop the water pump from working and the pot body from heating. When the second passage is opened, the cam shaft releases the micro switch, and sends a signal to the electronic control board to start the water pump and heat the pot body, thereby realizing the switching of the water passage or steam. The above functions can be completed by a single valve body, and there is no need to use multiple valve bodies and solenoid valves in combination, so the cost is low and a small volume space is occupied. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the valve body in one embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of the valve body in another aspect in one embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional view of the valve body when the first passage is open in one embodiment of the present invention.

[0021] Figure 4 This is a cross-sectional view of the valve body when the second passage is open in one embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the exploded structure of the valve body in one embodiment of the present utility model.

[0023] Figure 6 This is a schematic diagram of the overall structure of the cam shaft in one embodiment of the present utility model.

[0024] Figure 7It is a schematic diagram of the overall structure of the main body in one embodiment of the present utility model.

[0025] Figure 8 Schematic diagram of the overall structure of the valve body in one embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the overall structure of the valve body in another aspect in one embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram of the overall structure of the valve body in the third position in one embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] See also Figures 1-10 The pipeline valve body of the coffee machine includes a main body 1, a first valve stem assembly, a second valve stem assembly and a cam shaft 5. The main body 1 is provided with an inlet 2, a first outlet 3, a second outlet 4, a first active cavity 6, a second active cavity 7, a first passage and a second passage. The cam shaft 5 is rotatably arranged on the main body 1. The first valve stem assembly closes the first passage in the waiting state, and the second valve stem assembly closes the second passage in the waiting state. When the cam shaft 5 rotates to the closed position A, it pushes the first valve stem assembly upward to move on the first active cavity 6 to open the first passage. The inlet 2 is connected to the first outlet 3 through the first passage. ; When the cam shaft 5 rotates to the open position B, it pushes the second valve stem assembly to move upward on the second movable chamber 7 to open the second passage, and the inlet 2 is connected to the second outlet 4 through the second passage; a micro switch 8 is provided on the main body 1, and an electric control board is provided on the coffee machine. The micro switch 8 is electrically connected to the electric control board. When the cam shaft 5 rotates to the closed position A, it acts on the micro switch 8. When the cam shaft 5 rotates to the open position B, it disengages from the micro switch 8; the above structure can control the on and off of the water path or steam, the discharge of steam or water, and the release of the internal pressure of the pot body, and has the advantages of integrated multi-function, small size and low cost.

[0030] It also includes a first elastic member 9 and a second elastic member 10. The first elastic member 9 and the second elastic member 10 are springs. The first elastic member 9 is arranged between the first valve stem assembly and the main body 1, and the second elastic member 10 is arranged between the second valve stem assembly and the main body 1. When the cam shaft 5 rotates from the closed position A to the open position B, the first valve stem assembly moves downward on the first active chamber 6 under the elastic force of the first elastic member 9 to reset to the pending state to prevent steam or water from flowing to the first outlet 3. When the cam shaft 5 rotates from the open position B to the closed position A, the second valve stem assembly moves downward on the second active chamber 7 under the elastic force of the second elastic member 10 to reset to the pending state.

[0031] The first valve stem assembly includes a first valve stem 11 and a first sealing ring 12. The first valve stem 11 passes through the first sealing ring 12. A first closing portion 13 is provided on the first valve stem 11. The first passage includes a main channel 14 provided on the main body 1 and a first channel 15 and a second channel 16 provided on the first movable chamber 6. The first channel 15 and the second channel 16 are respectively provided on the upper and lower sides of the first sealing ring 12. The main channel 14 is connected to the first channel 15, and the second channel 16 is connected to the first outlet 3.

[0032] When the first valve stem 11 is in the waiting state, the first closing portion 13 and the first sealing ring 12 fit together (the first closing portion 13 presses the first sealing ring 12 downward under the elastic force of the first elastic member 9 to achieve sealing), and the first channel 15 and the second channel 16 are not connected to each other to close the first passage. When the cam shaft 5 rotates to the closed position A, it pushes the first valve stem 11 to move upward on the first movable chamber 6, so that a first gap 17 is formed between the first closing portion 13 and the first sealing ring 12, and the first channel 15 is connected to the second channel 16 through the first gap 17, so that the inlet 2 is connected to the first outlet 3.

[0033] The second valve stem assembly includes a second valve stem 18 and a second sealing ring 19. The second valve stem 18 passes through the second sealing ring 19. A second closing portion 20 is provided on the second valve stem 18. The second passage includes a main channel 14 provided on the main body 1, a third channel 21 provided on the first active chamber 6, and a fourth channel 22 and a fifth channel 23 provided on the second active chamber 7. The fourth channel 22 and the fifth channel 23 are respectively provided on the upper and lower sides of the second sealing ring 19. The main channel 14, the third channel 21 and the fourth channel 22 are connected in sequence, and the fifth channel 23 is connected to the second outlet 4.

[0034] When the second valve stem 18 is in the waiting state, the second closing portion 20 and the second sealing ring 19 fit together (the second closing portion 20 presses the second sealing ring 19 downward under the elastic force of the second elastic member 10 to achieve sealing), and the fourth channel 22 and the fifth channel 23 are not connected to each other to close the second passage. When the cam shaft 5 rotates to the open position B, it pushes the second valve stem 18 to move upward on the second movable chamber 7 to form a second gap 24 between the second closing portion 20 and the second sealing ring 19. The fourth channel 22 is connected to the fifth channel 23 through the second gap 24, so that the inlet 2 is connected to the second outlet 4.

[0035] The main body 1 is provided with an inlet channel 40, a first outlet channel 41 and a second outlet channel 42. The inlet 2 is connected to the main channel 14 through the inlet channel 40, the second channel 16 is connected to the first outlet 3 through the first outlet channel 41, and the fifth channel 23 is connected to the second outlet 4 through the second outlet channel 42.

[0036] A first convex active part 25, a second convex active part 26 and a third convex active part 27 are respectively provided on the outer side of the cam shaft 5, and a trigger part 28 is provided on the micro switch 8; when the cam shaft 5 rotates to the closed position A, the first convex active part 25 acts on the lower end of the first valve stem 11 to push the first valve stem 11 to move upward (i.e., lift the first valve stem 11), and the third convex active part 27 acts on the trigger part 28 (the third convex active part 27 supports the trigger part 28); when the cam shaft 5 rotates to the open position B, the second convex active part 26 acts on the lower end of the second valve stem 18 to push the second valve stem 18 to move upward (i.e., lift the second valve stem 18), and the third convex active part 27 disengages from the trigger part 28, so that the cam shaft 5 releases the micro switch 8; the cam shaft 5 is rotated manually.

[0037] A first through hole 29 is provided at the bottom of the first active chamber 6, and a second through hole 30 is provided at the bottom of the second active chamber 7. The lower end of the first valve stem 11 extends out of the first active chamber 6 through the first through hole 29, so that the first convex active part 25 can act on the lower end of the first valve stem 11, and the lower end of the second valve stem 18 extends out of the second active chamber 7 through the second through hole 30, so that the second convex active part 26 can act on the lower end of the second valve stem 18; a third sealing ring 31 is sleeved on the lower part of the first valve stem 11, and the third sealing ring 31 is located between the first valve stem 11 and the side wall of the first active chamber 6, and a fourth sealing ring 32 is sleeved on the lower part of the second valve stem 18, and the fourth sealing ring 32 is located between the second valve stem 18 and the side wall of the second active chamber 7. The third sealing ring 31 can prevent water vapor entering the first active chamber 6 from flowing to the cam shaft 5 through the first through hole 29, and the fourth sealing ring 32 can prevent water vapor entering the second active chamber 7 from flowing to the cam shaft 5 through the second through hole 30.

[0038] The first sealing ring 12 , the second sealing ring 19 , the third sealing ring 31 and the fourth sealing ring 32 are made of silicone material.

[0039] A push rod assembly is provided at the bottom of the main body 1, and the push rod assembly includes a push rod 33 and a third elastic member 34. The third elastic member 34 is provided between the push rod 33 and the main body 1. The third elastic member 34 is a spring. A concave-convex fitting portion 35 is provided on the outer side of the cam shaft 5. When the cam shaft 5 rotates, the concave-convex fitting portion 35 acts on the push rod 33 so that the push rod 33 compresses the third elastic member 34 downward. When the concave-convex fitting portion 35 disengages from the push rod 33, the push rod 33 is reset upward under the elastic force of the third elastic member 34; the push rod 33 and the third elastic member 34 act on each other to enable the cam shaft 5 to maintain a clear sense of rotation gear and appropriate tightness during the rotation process.

[0040] The coffee machine includes a pot body for heating water, the pot body is connected to an inlet 2 through a pipe, a first outlet 3 is connected to a silicone exhaust pipe, and a second outlet 4 is connected to a steam pipe; the coffee machine is also provided with a water pump connected to the pot body, the water pump draws external water into the pot body, the pot body is provided with a heating pipe, the heating pipe is used to heat the water in the pot body, and the electric control board is electrically connected to the water pump and the heating pipe; when the inlet 2 is connected to the first outlet 3 through the first passage, the interior of the pot body can be connected to the atmosphere during the preheating process, which plays a role in pressure relief and prevents the pressure from being too high and causing the pipe to burst or other other risks; when the inlet 2 is connected to the second outlet 4 through the second passage, the steam or water inside the pot body enters the valve body through the inlet 2, and then is discharged to the outside through the second outlet 4; when the pot body has finished working, the cam shaft 5 is rotated to the closed position A, so that the internal pressure of the pot body is relieved through the first outlet 3; when the cam shaft 5 presses against the micro switch 8, a signal is given to the electronic control board to control the water pump not to work and the pot body not to heat; when the cam shaft 5 releases the micro switch 8, a signal is given to the electronic control board to control the water pump to work and the pot body to heat.

[0041] The main body 1 includes a valve body 36, an upper valve cover 37 and a bottom cover 38. The upper valve cover 37 is installed on the top of the valve body 36, and the bottom cover 38 is installed on the bottom of the valve body 36. The inlet 2 and the second outlet 4 are arranged at one end of the valve body 36, and the first outlet 3 is arranged at the other end of the valve body 36. A first active cavity 6 and a second active cavity 7 are formed between the valve body 36 and the upper valve cover 37. A rotating mounting hole 39 is formed between the valve body 36 and the bottom cover 38, and the cam shaft 5 is rotatably mounted on the rotating mounting hole 39.

[0042] The first elastic member 9 is sleeved on the first valve stem 11, and the first elastic member 9 is arranged between the upper valve cover 37 and the first closing portion 13; the second elastic member 10 is sleeved on the second valve stem 18, and the second elastic member 10 is arranged between the upper valve cover 37 and the second closing portion 20; the bottom cover 38 is provided with a mounting cavity 43, and the top rod 33 is movably mounted in the mounting cavity 43, and the third elastic member 34 is arranged between the top rod 33 and the bottom cover 38.

[0043] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A coffee machine pipeline valve body, comprising a main body (1), characterized in that: The invention also includes a first valve stem assembly, a second valve stem assembly and a cam shaft (5); an inlet (2), a first outlet (3), a second outlet (4), a first movable chamber (6), a second movable chamber (7), a first passage and a second passage are provided on the main body (1); the cam shaft (5) is rotatably provided on the main body (1); the first valve stem assembly closes the first passage when in a pending state, and the second valve stem assembly closes the second passage when in a pending state; when the cam shaft (5) rotates to a closed position (A), it pushes the first valve stem assembly to move upward on the first movable chamber (6) to open the first passage, and the inlet (2) is connected to the first outlet (3) through the first passage; when the cam shaft (5) rotates to an open position (B), it pushes the second valve stem assembly to move upward on the second movable chamber (7) to open the second passage, and the inlet (2) is connected to the second outlet (4) through the second passage.

2. The coffee machine pipeline valve body according to claim 1, characterized in that: A micro switch (8) is provided on the main body (1), an electric control board is provided on the coffee machine, the micro switch (8) is electrically connected to the electric control board, the cam shaft (5) acts on the micro switch (8) when it rotates to the closed position (A), and disengages from the micro switch (8) when it rotates to the open position (B).

3. The coffee machine pipeline valve body according to claim 2, characterized in that: The valve stem assembly further comprises a first elastic member (9) and a second elastic member (10), wherein the first elastic member (9) is arranged between the first valve stem assembly and the main body (1), and the second elastic member (10) is arranged between the second valve stem assembly and the main body (1). The first valve stem assembly moves downward on the first movable chamber (6) under the elastic force of the first elastic member (9) to reset to a pending state, and the second valve stem assembly moves downward on the second movable chamber (7) under the elastic force of the second elastic member (10) to reset to a pending state.

4. The coffee machine pipeline valve body according to claim 3, characterized in that: The first valve stem assembly includes a first valve stem (11) and a first sealing ring (12), the first valve stem (11) passes through the first sealing ring (12), a first closing portion (13) is provided on the first valve stem (11), a first passage includes a main channel (14) provided on the main body (1) and a first channel (15) and a second channel (16) provided on the first active chamber (6), the first channel (15) and the second channel (16) are provided on upper and lower sides of the first sealing ring (12), respectively, the main channel (14) is connected to the first channel (15), and the second channel (16) is connected to the first outlet (3); When the first valve stem (11) is in a waiting state, the first closing portion (13) and the first sealing ring (12) are in contact with each other, and the first channel (15) and the second channel (16) are not connected to each other. When the cam shaft (5) rotates to the closed position (A), it pushes the first valve stem (11) to move upward on the first movable chamber (6), so that a first gap (17) is formed between the first closing portion (13) and the first sealing ring (12), and the first channel (15) is connected to the second channel (16) through the first gap (17), so that the inlet (2) is connected to the first outlet (3).

5. The coffee machine pipeline valve body according to claim 4, characterized in that: The second valve stem assembly includes a second valve stem (18) and a second sealing ring (19), the second valve stem (18) passes through the second sealing ring (19), and a second closing portion (20) is provided on the second valve stem (18). The second passage includes a main channel (14) provided on the main body (1), a third channel (21) provided on the first active chamber (6), and a fourth channel (22) and a fifth channel (23) provided on the second active chamber (7). The fourth channel (22) and the fifth channel (23) are provided on the upper and lower sides of the second sealing ring (19), respectively. The main channel (14), the third channel (21) and the fourth channel (22) are connected in sequence, and the fifth channel (23) is connected to the second outlet (4). When the second valve stem (18) is in a waiting state, the second closing portion (20) and the second sealing ring (19) are in contact with each other, and the fourth channel (22) and the fifth channel (23) are not connected to each other. When the cam shaft (5) rotates to the open position (B), it pushes the second valve stem (18) to move upward on the second movable chamber (7), so that a second gap (24) is formed between the second closing portion (20) and the second sealing ring (19), and the fourth channel (22) is connected to the fifth channel (23) through the second gap (24), so that the inlet (2) is connected to the second outlet (4).

6. The coffee machine pipeline valve body according to claim 5, characterized in that: A first convex active portion (25), a second convex active portion (26) and a third convex active portion (27) are respectively provided on the outer side of the cam shaft (5), and a trigger portion (28) is provided on the micro switch (8); when the cam shaft (5) rotates to the closed position (A), the first convex active portion (25) acts on the lower end of the first valve stem (11) to push the first valve stem (11) to move upward, and the third convex active portion (27) acts on the trigger portion (28); when the cam shaft (5) rotates to the open position (B), the second convex active portion (26) acts on the lower end of the second valve stem (18) to push the second valve stem (18) to move upward, and the third convex active portion (27) is separated from the trigger portion (28).

7. The coffee machine pipeline valve body according to claim 5, characterized in that: A first through hole (29) is provided at the bottom of the first movable chamber (6), a second through hole (30) is provided at the bottom of the second movable chamber (7), the lower end of the first valve stem (11) extends out of the first movable chamber (6) through the first through hole (29), and the lower end of the second valve stem (18) extends out of the second movable chamber (7) through the second through hole (30); a third sealing ring (31) is sleeved on the lower part of the first valve stem (11), and the third sealing ring (31) is located between the first valve stem (11) and the side wall of the first movable chamber (6); a fourth sealing ring (32) is sleeved on the lower part of the second valve stem (18), and the fourth sealing ring (32) is located between the second valve stem (18) and the side wall of the second movable chamber (7).

8. The coffee machine pipeline valve body according to claim 6, characterized in that: A push rod assembly is provided at the bottom of the main body (1), and the push rod assembly includes a push rod (33) and a third elastic member (34). The third elastic member (34) is provided between the push rod (33) and the main body (1). A concave-convex fitting portion (35) is provided on the outer side of the cam shaft (5). When the cam shaft (5) rotates, the concave-convex fitting portion (35) acts on the push rod (33) to compress the third elastic member (34). When the concave-convex fitting portion (35) is separated from the push rod (33), the push rod (33) is reset under the elastic force of the third elastic member (34).

9. The coffee machine pipeline valve body according to any one of claims 1 to 8, characterized in that: The coffee machine comprises a kettle body for heating water, wherein the kettle body is connected to an inlet (2) via a pipe, a first outlet (3) is connected to an exhaust pipe, and a second outlet (4) is connected to a steam pipe.

10. The coffee machine pipeline valve body according to claim 9, characterized in that: The main body (1) includes a valve body (36), an upper valve cover (37) and a bottom cover (38), wherein the upper valve cover (37) is mounted on the top of the valve body (36), and the bottom cover (38) is mounted on the bottom of the valve body (36). The inlet (2) and the second outlet (4) are arranged at one end of the valve body (36), and the first outlet (3) is arranged at the other end of the valve body (36). A first active cavity (6) and a second active cavity (7) are formed between the valve body (36) and the upper valve cover (37), and a rotating mounting hole (39) is formed between the valve body (36) and the bottom cover (38). The cam shaft (5) is rotatably mounted on the rotating mounting hole (39).

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