Brewing device

Abstract

The brewing device comprises a left powder barrel, a right powder barrel, a left top seat assembly and a right top seat assembly, the left powder barrel and the right powder barrel are arranged on the two sides respectively, the left top seat assembly is sleeved with the left powder barrel and can move linearly, and the right top seat assembly is installed in the right powder barrel and can move linearly; the left powder barrel is used for moving towards one side of the right powder barrel to abut against the right powder barrel during material receiving operation, so that a material receiving space for receiving materials to be brewed is defined by the left powder barrel, the left top seat assembly and the right top seat assembly; a brewing space for brewing materials is defined by the left top seat assembly, the right top seat assembly or the left top seat assembly, the right top seat assembly and the right powder barrel during brewing operation; the left top seat assembly is used for injecting brewing liquid into the brewing space during brewing operation; and the right top seat assembly is used for enabling the brewed liquid to flow out from the brewing space during brewing operation. The invention provides an alternative technical scheme of a brewing device.

Description

Technical Field

[0001] The present invention relates to the technical field of beverage brewing equipment, and specifically relates to a brewer. Background Art

[0002] There are many types of existing beverage brewing equipment, such as coffee brewers, and coffee brewers have adopted many different existing technical solutions to complete coffee brewing. For example, the "coffee machine brewing system" disclosed in the prior art patent CN119699856A, the "household integrated grinding coffee machine" disclosed in CN119679290A, the "multifunctional coffee machine" disclosed in CN119745228A, etc. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an alternative solution for a brewer.

[0004] To solve the above technical problem, the present invention provides the following technical solutions: A brewer includes a left powder bucket and a right powder bucket disposed on both sides, a left top seat assembly, and a right top seat assembly. The left powder bucket is sleeved outside the left top seat assembly and can move linearly. The right top seat assembly is installed inside the right powder bucket and can move linearly; The left powder bucket is used to move towards the right powder bucket side during the feeding operation until it abuts against the right powder bucket, so as to enclose a feeding space for receiving the material to be brewed with the right powder bucket, the left top seat assembly, and the right top seat assembly; and is used to enclose a brewing space for brewing the material with the left top seat assembly and the right top seat assembly during the brewing operation, or enclose a brewing space for brewing the material with the left top seat assembly, the right top seat assembly, and the right powder bucket; The left top seat assembly is used to inject brewing liquid into the brewing space during the brewing operation; The right top seat assembly is used to allow the brewed liquid to flow out of the brewing space during the brewing operation.

[0005] In a possible solution, the left powder bucket is further used to move away from the right powder bucket side during the slag discharging operation to open the brewing space.

[0006] In a possible solution, the right top seat assembly is further used to move away from the left powder bucket side during the slag discharging operation, or first move towards the left powder bucket side and then move away from the left powder bucket side.

[0007] In a possible solution, the right side of the left top seat assembly is provided with a left filter screen, and the left side of the right top seat assembly is provided with a right filter screen; The left filter screen and the right filter screen are used to enclose the brewing space with the left powder bucket during the brewing operation, or enclose the brewing space with the left powder bucket and the right powder bucket.

[0008] In a possible solution, the left top seat assembly includes a left top seat frame, a left brewing water nozzle and a left top seat respectively installed on both sides of the left top seat frame; A left brewing nozzle for injecting brewing liquid; A second through-hole penetrating through one side surface of the corresponding brewing space of the left top seat is formed inside the left top seat, and the second through-hole is used to communicate with the left brewing nozzle.

[0009] In a possible solution, during the brewing operation, the left top seat and the inner side wall of the left powder barrel are sealed and assembled through a sealing ring.

[0010] In a possible solution, a left sealing groove is formed on the side wall of the left top seat corresponding to the inner side wall of the left powder barrel, and the sealing ring is sealed and installed in the left sealing groove. A first through-hole communicating with the left sealing groove is formed inside the left top seat, and the first through-hole is used for injecting liquid to drive the sealing ring to seal and fit against the inner side wall of the left powder barrel outwardly.

[0011] In a possible solution, the right top seat assembly includes a right top seat, a control valve and a right brewing nozzle respectively installed on both sides of the right top seat; A right brewing nozzle for connecting to a control valve for the outflow of the brewed liquid; A control valve for opening during the brewing operation to allow the brewed liquid to flow through the control valve from the brewing space into the right brewing nozzle.

[0012] In a possible solution, during the brewing operation, the right top seat and the inner side wall of the left powder barrel or the inner side wall of the right powder barrel are sealed and assembled through a sealing ring.

[0013] In a possible solution, it further includes a cover plate with a blanking port. The cover plate is connected to the right top seat assembly through a connecting rod and is located outside the right powder barrel. A travel groove for the movement of the connecting rod is formed on the right powder barrel.

[0014] The beneficial effects of the present invention compared with the prior art are as follows: The left powder barrel, the left top seat assembly, the right powder barrel and the right top seat assembly provided by the present invention can cooperate with each other to complete the material receiving operation and the brewing operation, thereby providing an alternative technical solution for a brewer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a brewer of the present invention from one perspective; Figure 2 It is an overall cross-sectional view of a brewer of the present invention; Figure 3 It is a schematic structural diagram of a brewer during the material receiving operation of the present invention; Figure 4 It is a schematic structural diagram of a brewer during the brewing operation of the present invention; Figure 5 It is a schematic structural diagram of a brewer during the slag discharging operation of the present invention; Figure 6 It is an exploded view of the left connecting frame, the left powder barrel and the left top seat assembly of the present invention; Figure 7 Cross-sectional view of the left top seat assembly of the present invention; Figure 8 Schematic diagram of the right connecting frame and the guide barrel structure of the present invention; Figure 9 Partial component cross-sectional view of the right top seat assembly of the present invention; Figure 10 Schematic perspective view of the camshaft of the present invention; Figure 11 Schematic front view of the camshaft of the present invention; Figure 12 Schematic rear view of the camshaft of the present invention; Figure 13 Schematic bottom view of the camshaft of the present invention; Figure 14 Cooperating state diagram of the left connecting frame and the camshaft of the present invention; Figure 15 Cooperating state diagram of the left powder bucket, the right top seat assembly and the camshaft of the present invention; Figure 16 Schematic diagram of the travel groove of the right powder bucket of the present invention.

[0016] The reference numerals in the figure are: 1 - Motor; 2 - Camshaft, 21 - Left movement groove, 22 - Right movement groove; 3 - Fixed plate, 31 - Support rod; 4 - Left connecting frame, 41 - Left guide rod; 5 - Left powder bucket; 6 - Left top seat assembly, 61 - Left top seat frame, 62 - Left sealing water nozzle, 63 - Left brewing water nozzle, 64 - Left top seat, 641 - Left sealing groove, 642 - First through hole, 643 - Second through hole, 65 - Left sealing ring, 66 - Left filter screen, 67 - Water pipe; 7 - Right connecting frame, 71 - Right guide rod, 72 - Connecting rod, 73 - Cover plate, 731 - Material dropping port; 8 - Right powder bucket, 81 - Travel groove; 9 - Right top seat assembly, 91 - Right top seat, 911 - Third through hole, 912 - Right sealing groove, 913 - Installation cavity, 92 - Right sealing water nozzle, 93 - Right brewing water nozzle, 94 - Right sealing ring, 95 - Right filter screen, 96 - Cap, 97 - Control valve, 971 - Valve body, 972 - Seat body, 973 - Installation hole, 974 - Fourth through hole, 975 - Top cover, 976 - Plug, 977 - Spring, 98 - Guide barrel; 10 - Material receiving space; 11 - Brewing space. Detailed implementation method

[0017] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "left", "right", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0019] The brewer provided in this embodiment can be used to brew coffee, such as Figure 2-4 and includes processes of material receiving operation, powder pressing operation, brewing operation, and residue discharging operation. The above-mentioned brewer, such as Figure 1 、 Figure 2 mainly includes components such as a motor 1, a camshaft 2, a support rod 31, a cylindrical left powder bucket 5, a left top seat assembly 6, a cylindrical right powder bucket 8, and a right top seat assembly 9.

[0020] Such as Figure 2 , there is a fixed plate 3 on each side of the brewer. The camshaft 2 is rotatably installed between the fixed plates 3 on both sides through bearings. The output end of the motor 1 is connected to the camshaft 2 and drives the camshaft 2 to rotate. The rotational movement of the camshaft 2 further drives the left powder bucket 5 and the right top seat assembly 9 to move linearly.

[0021] Such as Figure 1 , four cylindrical support rods 31 are installed between the fixed plates 3 on both sides. The left powder bucket 5 and the right top seat assembly 9 are respectively connected to the support rod 31 through a left connecting frame 4 and a right connecting frame 7. The left connecting frame 4 and the right connecting frame 7 are respectively provided with cylindrical sleeve parts that can be sleeved on the outside of the support rod 31, so that the left connecting frame 4 and the right connecting frame 7 can slide linearly along the support rod 31. The support rod 31 provides support and guidance for the linear movement of the left connecting frame 4 and the right connecting frame 7.

[0022] Such as Figure 1 、 Figure 2 、 Figure 8 , the left powder bucket 5 and the right top seat assembly 9 are respectively placed on both sides along the axial direction of the camshaft 2. A left movement groove 21 around the camshaft 2 is formed on the side wall of the camshaft 2 corresponding to the left powder bucket 5. Such as Figures 10 to 13, on the other side wall of the camshaft 2 corresponding to the right top seat assembly 9, a right movement groove 22 around the camshaft 2 is formed; on the left connecting frame 4, a left guide rod 41 placed in the left movement groove 21 is provided, as Figure 6 , Figure 14 , so that when the camshaft 2 rotates, the left connecting frame 4 is driven to move along the support rod 31 by the cooperation of the left movement groove 21 and the left guide rod 41, driving the left powder bucket 5 to move linearly; on the right connecting frame 7, a right guide rod 71 placed in the right movement groove 22 is provided, as Figure 15 , so that when the camshaft 2 rotates, the right connecting frame 7 is driven to drive the right top seat assembly 9 to move linearly by the right movement groove 22.

[0023] It should be noted that the specific distribution form of the above-mentioned left movement groove and right movement groove around the camshaft is as Figures 10 to 13 shown, and this is only one embodiment. For other distribution forms around the camshaft that can open left and right movement grooves on the same camshaft and meet the driving functions of the left movement groove and right movement groove of the present application, they also belong to the protection scope of the present application.

[0024] In this way, by using a driving source composed of the motor 1 and the camshaft 2, the linear movement operations of the left powder bucket 5 and the right top seat assembly 9 can be completed, and then the left powder bucket 5 and the right top seat assembly 9 can allocate different cooperation positions for different operation processes.

[0025] The above-mentioned brewing device adopts a driving source of one motor 1, which changes the cumbersome structure of the traditional double-motor system working together, improves the energy efficiency ratio and convenience. Moreover, the above-mentioned camshaft 2 is horizontally distributed, the left powder bucket 5 and the right top seat assembly 9 are distributed along the axial direction of the camshaft 2, and the left powder bucket 5 and the right powder bucket 8 are coaxially horizontally distributed, making the overall brewing device in a horizontal position, changing the vertical structure of the traditional brewing device and saving the occupied vertical space.

[0026] The above-mentioned left top seat assembly 6, as Figure 6 , Figure 7 , includes a left top seat frame 61, two connecting nozzles, a left top seat 64, a left sealing ring 65, and a left filter screen 66. The left top seat frame 61 is installed on the left fixing plate 3 to fix the overall position of the left top seat assembly 6. Two connecting nozzles are installed inside the left side of the left top seat frame 61, and the left top seat 64 is installed on the right side of the left top seat frame 61.

[0027] The left top seat 64 is cylindrical. A left sealing groove 641 is formed on the outer circumferential side wall of the left top seat 64. A left sealing ring 65 is sleeved and installed in the left sealing groove 641. An inner groove is formed on the inner side surface of the left sealing ring. A first through hole 642 communicating with the left sealing groove 641 and the inner groove is formed in the left end surface of the left top seat 64. A connecting water nozzle is communicated with the first through hole 642 through a water pipe 67 and a water nozzle. By injecting water into the connecting water nozzle (the connecting water nozzle is called the left sealing water nozzle 62), the water is injected into the left sealing groove 641 through the water pipe 67 and the first through hole 642, and then the left sealing ring 65 is extruded to expand outward. The left powder bucket 5 is sleeved outside the left top seat 64. The expansion of the left sealing ring 65 makes the left sealing ring 65 fit and seal with the inner side wall of the left powder bucket 5, so as to realize the assembly sealing of the left top seat 64 and the left powder bucket 5 by continuously injecting water. By using the continuous expansion effect of the left sealing ring 65, when the left powder bucket 5 moves linearly, the left top seat 64 and the left powder bucket 5 can also maintain a sealing effect.

[0028] A left filter screen 66 is installed on the right end surface of the left top seat 64. A second through hole 643 penetrating the right end surface of the left top seat is formed in the left end surface of the left top seat 64. Another connecting water nozzle (the other connecting water nozzle is called the left brewing water nozzle 63) is communicated with the second through hole 643 through a water pipe 67 and a water nozzle. By injecting water into the left brewing water nozzle 63, the water flows out after passing through the second through hole 643 and the left filter screen 66.

[0029] The right side of the above-mentioned right powder bucket 8 is installed on the right fixing plate 3, and the right top seat assembly 9 is installed on the right powder bucket 8 in a linearly movable manner. The right top seat assembly 9, such as Figure 8 、 Figure 9 , includes components such as a right top seat 91, two connecting water nozzles, a right sealing ring 94, a right filter screen 95, a cap 96, a control valve 97, a top cover 975, a plug 976, a spring 977, etc.

[0030] The right top seat 91 is cylindrical and is installed in the right powder bucket 8 in a linearly movable manner; as Figure 5 , a cylindrical guide barrel 98 is installed on the right end surface of the right top seat 91. A connecting rod 72 is installed between the guide barrel 98 and the right connecting frame 7, such as Figure 8 、 Figure 16, a travel groove 81 is provided on the side wall of the right powder bucket 8. When the right connecting frame 7 pushes the right top seat assembly 9 to move linearly, the connecting rod 72 moves in the travel groove 81. A cover plate 73 for covering the travel groove is also installed on the connecting rod 72. The cover plate 73 is located outside the travel groove. A blanking port 731 is provided on the cover plate 73, and the opening of the blanking port 731 faces upward. The cover plate 73 and the right top seat 91 move linearly synchronously inside and outside the right powder bucket 8 respectively driven by the right connecting frame 7. This travel groove plays a role of providing travel avoidance for the connecting rod 72 to move and connecting the blanking port 731 with the inner cavity of the right powder bucket 8 during the material receiving operation process. This cover plate 73 not only serves as a carrier for the blanking port 731, but also the other parts of the cover plate 73 can play a role of covering the travel groove 81.

[0031] As Figure 9 , a circle of right sealing grooves 912 is provided on the outer circumferential side wall of the right top seat 91. A right sealing ring 94 is sleeved and installed in the right sealing grooves 912. A third through hole 911 communicating with the right sealing grooves 912 is provided in the right end face of the right top seat 91. A connecting water nozzle of the right top seat assembly 9 communicates with the third through hole 911. By injecting water into this connecting water nozzle (this connecting water nozzle is called the right sealing water nozzle 92), the water is injected into the right sealing grooves 912 and then extrudes the outer side of the right sealing ring 94 to expand, so that the right sealing ring 94 fits and seals with the inner side wall of the right powder bucket 8, realizing the assembly seal between the right top seat 91 and the right powder bucket 8 by continuously injecting water. Utilizing the continuous expansion effect of the right sealing ring 94, when the right top seat 91 moves linearly in the right powder bucket 8, a sealing effect can also be maintained between the right top seat 91 and the right powder bucket 8.

[0032] The above-mentioned control valve 97 includes a cylindrical valve body 971 and a disc-shaped seat body 972. An outflow channel is formed in the middle of the seat body 972. An installation hole 973 is opened on the left side inside the valve body 971, and a fourth through hole 974 communicating with the installation hole 973 is opened on the right side. Inside the installation hole 973, a spring 977, a plug 976, and an annular top cover 975 are sequentially installed from right to left. One end of the plug 976 abuts against the central hole of the top cover 975, and the other end is connected to the spring 977. The seat body 972 is installed on the left end face of the right top seat 91, and the middle part of the seat body 972 presses against the top cover 975. The installation design of the seat body facilitates the removal of the control valve from the right top seat for cleaning or replacement. The outflow channel of the seat body 972 communicates with the central hole of the top cover 975. When the water pressure coming from the left side drives the plug 976 to move to the right to release the blockage of the top cover 975, the outflow channel of the seat body 972 communicates with the fourth through hole 974 for water to flow out. The valve body 971, the seat body 972, and the internal top cover 975, plug 976, and spring 977 together constitute a control valve 97 that is closed under normal conditions and can be opened under the drive of liquid pressure. The control valve 97 is closed under normal conditions and the liquid cannot flow through. During the brewing operation, the control valve 97 is opened under the drive of liquid pressure to allow the coffee liquid to flow out, playing a role in controlling the opening and closing of the coffee liquid flow channel. Of course, in other embodiments, an electrically controlled control valve can also be used, which is opened and closed regularly according to the brewing time. The principle and structure of the opening and closing of such an electrically controlled control valve itself belong to the prior art, and the principle and structure of the opening and closing of the electrically controlled control valve will not be elaborated here.

[0033] The right filter screen 95 is installed inside the cap 96. The cap 96 is installed at the left end of the right top seat 91 such that the seat body 972 of the control valve 97 is placed inside the cap 96. An installation cavity 913 is opened on the left end face of the right top seat 91. The valve body 971 of the control valve 97 is sealingly installed inside the installation cavity 913. Another connecting water nozzle (this other connecting water nozzle is called the right brewing water nozzle 93) communicating with the fourth through hole 974 is installed on the right end face of the right top seat 91. The coffee liquid flows out after passing through the left filter screen 95, the opened control valve 97, the fourth through hole 974, and the right brewing water nozzle 93.

[0034] The process of using the above-mentioned brewer to complete the processes of receiving materials, tamping, brewing, and discharging residues is as follows: Receiving materials process: As Figure 1 , before the operation, the left powder bucket 5 and the right top seat assembly 9 are respectively in the initial positions of the left top seat assembly 6 and the right powder bucket 8. Start the motor 1 to drive the camshaft 2 to rotate clockwise. The camshaft 2 drives the left connecting frame 4 to drive the left powder bucket 5 to move to the right, that is, move towards the side where the right powder bucket 8 is located, until the left powder bucket 5 abuts against the right powder bucket 8, as Figure 2 、 Figure 3, at this time, the left top seat 64 is still inside the left powder bucket 5, further enabling the left powder bucket 5, the right powder bucket 8, the left top seat assembly 6, and the right top seat assembly 9 to enclose a material receiving space 10 for receiving coffee powder (a material to be brewed, and in this embodiment, brewing coffee powder is taken as an example for introduction). The blanking port 731 is above the material receiving space 10, and the coffee powder falls into the material receiving space 10 from the blanking port 731.

[0035] Pressing powder process: The motor 1 drives the camshaft 2 to continue rotating clockwise, causing the right top seat assembly 9 to move leftward, that is, move toward the side where the left powder bucket 5 is located, to push the coffee powder. A brewing space 11 is formed between the left filter screen 66 and the right filter screen 95, and the coffee powder is pushed and squeezed in the brewing space 11, as Figure 3 , the brewing space 11 in this embodiment is inside the left powder bucket 5, that is, the coffee powder is pushed into the left powder bucket. At this time, the brewing space is formed by enclosing the left powder bucket 5, the left filter screen 66, and the right filter screen 95; of course, in other embodiments, it is not necessary to push all the coffee powder into the left powder bucket, and some can still be retained in the right powder bucket. Then, the brewing space at this time is formed by enclosing the left powder bucket, the right powder bucket together with the left filter screen and the right filter screen. In this pressing powder process, the position of the left powder bucket 5 does not move, and the right top seat assembly moves to press the powder.

[0036] Brewing process: As Figure 1 , Figure 3 , first use the left sealing water nozzle 62 and the right sealing water nozzle 92 to inject water so that the left sealing ring 65 fits the inner wall of the left powder bucket 5, and the right sealing ring 94 also fits the inner wall of the left powder bucket 5 (in this embodiment, the right sealing ring 94 of the right top seat assembly 9 has been pushed into the left powder bucket 5, as Figure 3 ), making the left top seat 64, the right top seat 91 and the inner wall of the left powder bucket 5 sealed, ensuring that when brewing, the brewing liquid (in this embodiment, water is taken as an example and injected) will not leak from the gap between the left top seat 64, the right top seat 91 and the brewing space 11; then, inject hot water into the left brewing water nozzle 63, as Figure 1 The flow path shown by the arrow in, flows out from the second through hole 643 of the left top seat 64, then enters the brewing space 11 through the left filter screen 66 to contact and brew with the coffee powder, and then the coffee liquid (that is, the brewed liquid) flows out from the right filter screen 95, the control valve 97 and then from the right brewing water nozzle 93, completing the brewing process and flowing out the coffee liquid.

[0037] Among them, the left filter screen 66 and the right filter screen 95 filter out the residues in the coffee liquid through their tiny pores, making the residues flow in the brewing space 11. The opening and closing process of the control valve 97 is as follows: With the pressure action of the hot water, the plug 976 and the spring 977 in the valve body 971 are pushed open, allowing the coffee liquid to flow through; when the coffee liquid is discharged completely, the hot water pressure decreases, the spring 977 rebounds, and the plug 976 closes the top cover 975 again, thus ending the discharge of the coffee liquid.

[0038] Dregs discharging process: After the brewing is completed, the motor 1 drives the camshaft 2 to rotate counterclockwise, and the left powder bucket 5 and the right top seat assembly 9 are reset, that is, the left powder bucket 5 and the right top seat assembly 9 return to the initial position, so that the brewing space 11 is completely opened, as Figure 4 , so that the residues originally intercepted in the brewing space 11 by the two side filter meshes will naturally fall off, completing the dregs discharging operation. Of course, in other embodiments, such as the case where the brewing space is jointly constructed by the right powder bucket and there are residues left in the right powder bucket after brewing, the design can be appropriately modified so that the left powder bucket moves leftward to reset and open the brewing space, and the right top seat assembly also moves leftward to push the residues to fall off and then moves rightward to reset.

Claims

1. A brewing device, characterized in that: It includes a left powder barrel and a right powder barrel, a left top seat assembly and a right top seat assembly which are respectively arranged on both sides. The left powder barrel is sleeved on the outside of the left top seat assembly and can move linearly. The right top seat assembly is installed in the right powder barrel and can move linearly. The left powder barrel is used to move toward the right powder barrel to abut against the right powder barrel during the material receiving operation, so as to enclose a material receiving space for receiving the material to be brewed together with the right powder barrel, the left top seat assembly, and the right top seat assembly; and is used to enclose a brewing space for brewing materials together with the left top seat assembly and the right top seat assembly or together with the left top seat assembly, the right top seat assembly, and the right powder barrel during the brewing operation; The left top seat assembly is used for injecting brewing liquid into the brewing space during brewing operation; The right top seat assembly is used to allow the brewed liquid to flow out of the brewing space during the brewing operation.

2. The brewing device according to claim 1, characterized in that: The left powder barrel is also used to move toward a side away from the right powder barrel during the slag discharge operation to open the brewing space.

3. The brewing device according to claim 2, characterized in that: The right top seat assembly is also used to move toward the side away from the left powder barrel during the slag discharge operation, or to move toward the side of the left powder barrel first and then move toward the side away from the left powder barrel.

4. The brewing device according to claim 1, characterized in that: The right side of the left top seat assembly is provided with a left filter screen, and the left side of the right top seat assembly is provided with a right filter screen; The left filter net and the right filter net are used to enclose the brewing space together with the left powder barrel or together with the left powder barrel and the right powder barrel during the brewing operation.

5. The brewing device according to claim 1, characterized in that: The left top seat assembly comprises a left top seat frame, a left brewing water spout and a left top seat respectively mounted on both sides of the left top seat frame; The left brewing spout is used to inject brewing liquid; A second through hole is formed in the left top seat and passes through a side surface of the left top seat corresponding to the brewing space. The second through hole is used to communicate with the left brewing water spout.

6. The brewing device according to claim 5, characterized in that: During the brewing operation, the left top seat and the inner wall of the left powder barrel are sealed and assembled through a sealing ring.

7. The brewing device according to claim 6, characterized in that: A left sealing groove is formed on the side wall of the left top seat corresponding to the inner wall of the left powder barrel, and the sealing ring is sealed in the left sealing groove. A first through hole connected to the left sealing groove is formed in the left top seat, and the first through hole is used for injecting liquid to drive the sealing ring to seal outwardly and fit the inner wall of the left powder barrel.

8. The brewing device according to claim 1, characterized in that: The right top seat assembly comprises a right top seat, a control valve and a right brewing water spout respectively installed on both sides of the right top seat; The right brewing water spout is used to connect the control valve to allow the brewed liquid to flow out; The control valve is used to open during the brewing operation so that the brewed liquid flows from the brewing space through the control valve and enters the right brewing water spout.

9. The brewing device according to claim 8, characterized in that: During the brewing operation, the right top seat is sealed and assembled with the inner wall of the left powder barrel or the inner wall of the right powder barrel through a sealing ring.

10. The brewing device according to claim 1, characterized in that: It also includes a cover plate with a material drop opening, which is connected to the right top seat assembly through a connecting rod and is located outside the right powder barrel. A travel groove for the connecting rod to move is formed on the right powder barrel.

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