Built-in household rice mill

Abstract

The utility model provides a built-in household rice husking machine capable of discharging and receiving rice in a machine shell, aims to solve the problem that a rice discharging shell is prone to hurting people, and relates to the field of household rice husking machines. The built-in household rice mill comprises a machine shell, a hopper and a rice mill main body, the rice mill main body comprises a motor and a rice milling mechanism connected with the motor, the rice mill main body is arranged in the machine shell, a primary rice outlet is formed in the end of the rice milling mechanism, and a secondary rice outlet is formed in the end of the rice milling mechanism. A bran storage bin located below the rice husking machine body and communicated with a bran outlet of the rice husking machine body is arranged in the machine shell, a rice outlet barrel is arranged at the position of the first-level rice outlet and communicated with the interior of the rice outlet barrel, a second-level rice outlet located below the first-level rice outlet is formed in the rice outlet barrel, and the second-level rice outlet is communicated with the interior of the second-level rice outlet. The rice outlet barrel is arranged in the machine shell and is contained in the machine shell, and a rice storage bin located below the second-stage rice outlet is further arranged in the machine shell. The rice husking machine is not only attractive, but also capable of reducing dust pollution.

Description

Technical Field

[0001] The utility model relates to the field of household rice mills, and particularly to an in-built household rice mill. Background Art

[0002] Freshly milled rice has higher nutritional value compared to ordinary rice sold in the market. Therefore, with the improvement of living quality, household rice mills have emerged. Compared with ordinary rice mills, household rice mills are required to have a smaller volume and a more fashionable appearance.

[0003] Chinese Patent with the authorization announcement number CN217189732U discloses an easily disassembled and assembled household rice mill, including a machine shell, a hopper and a rice milling machine main body. The rice milling machine main body includes a motor and a rice milling mechanism connected to the motor. The rice milling machine main body is arranged inside the machine shell. The hopper is arranged above the rice milling machine main body and the bottom opening of the hopper is connected to the feed inlet of the rice milling machine main body. A chaff storage bin is also arranged inside the machine shell below the rice milling machine main body and communicated with the chaff outlet of the rice milling machine main body. An out-rice shell is also arranged at the out-rice outlet of the rice milling mechanism. A rice blocking structure is arranged inside the out-rice shell, and an adjusting structure is arranged outside the shell. Considering the convenience of observing the out-rice situation, the existing out-rice shell of the rice mill is generally arranged outside the machine shell or arranged inside the machine shell with the lower end of the out-rice shell extending outside the machine shell. This structure is not only not beautiful and fashionable for household rice mills, but more importantly, because household rice mills mainly meet the needs of some household users for freshly milled rice, that is, the need to mill rice as needed for immediate consumption, they need to be used frequently and the processing amount per time is small, and they are often placed in easily accessible places, such as: the stove. This setting method is very easy to scratch people, which is more harmful than beneficial to household rice mills. Therefore, further improvement is needed. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an in-built household rice mill for discharging and receiving rice inside the machine shell to solve the problem that the out-rice shell is easy to hurt people.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an in-built household rice mill, including a machine shell, a hopper and a rice milling machine main body. The rice milling machine main body includes a motor and a rice milling mechanism connected to the motor. The rice milling machine main body is arranged inside the machine shell. The hopper is arranged above the rice milling machine main body and the bottom opening of the hopper is connected to the feed inlet of the rice milling machine main body. One end of the rice milling mechanism has a primary out-rice outlet. A chaff storage bin is arranged inside the machine shell below the rice milling machine main body and communicated with the chaff outlet of the rice milling machine main body. An out-rice tube is arranged at the primary out-rice outlet. The primary out-rice outlet is communicated with the inside of the out-rice tube. A secondary out-rice outlet is arranged on the out-rice tube below the primary out-rice outlet. The out-rice tube is arranged inside the machine shell and is included by the machine shell. A rice storage bin is also arranged inside the machine shell below the secondary out-rice outlet.

[0006] Furthermore, a broken rice sieve plate is provided in the rice discharge barrel below the primary rice outlet. The broken rice sieve plate is arranged to be inclined downward, and the lower end of the broken rice sieve plate is connected to the secondary rice outlet so that the rice grains flowing down from the broken rice sieve plate can flow out from the secondary rice outlet. A broken rice discharge port connected to the bran storage bin is provided below the broken rice sieve plate.

[0007] Furthermore, a pull-out rice receiving container is provided in the rice storage bin, and a pull-out bran receiving container is provided in the bran storage bin.

[0008] Furthermore, the rice receiving container is horizontally pulled out along the axial direction of the rice milling mechanism, and the bran receiving container is horizontally pulled out along a direction perpendicular to the pulling direction of the rice receiving container.

[0009] Furthermore, the rice discharge cylinder is provided with a rice discharge adjustment mechanism, which includes a rice blocking structure and an adjustment structure. The rice blocking structure is arranged in the rice discharge cylinder and includes a rice blocking plate, a spring and a guide rod. The rice blocking plate covers the first-level rice discharge port. The guide rod is slidably arranged in the rice discharge cylinder along the axial direction of the rice milling mechanism. The inner end of the guide rod is fixedly connected to the rice blocking plate. The spring is sleeved on the guide rod and abuts against the rice blocking plate. The adjustment structure abuts against the spring to adjust the compression amount of the spring.

[0010] Furthermore, the adjustment structure is arranged in the casing, including an adjusting motor, an adjusting screw and a pressure plate abutting against the spring for compressing the spring, the adjusting screw is arranged in the rice discharge drum along the axial direction of the rice milling mechanism, the adjusting motor is installed on the outside of the rice discharge drum and is transmission-connected to the outer end of the adjusting screw, the pressure plate is slidingly connected to the rice discharge drum along the axial direction of the rice milling mechanism, the pressure plate is sleeved on the adjusting screw and cooperates with the thread of the adjusting screw, so that the adjusting screw can rotate to push the pressure plate to slide along the axial direction of the rice milling mechanism.

[0011] Furthermore, the guide rod is coaxially arranged with the adjusting screw, and the outer end of the guide rod is inserted into a blind hole provided at the inner end of the adjusting screw, and is rotationally and slidingly engaged with the blind hole.

[0012] Furthermore, the adjustment structure includes an adjustment knob, an adjustment wheel, a shift fork, and a rotating shaft rotatably arranged above the guide rod;

[0013] The adjusting knob is arranged in a groove on the outer side of the housing;

[0014] The rotating shaft is arranged parallel to the guide rod, and one end of the rotating shaft extends outside the housing and is fixedly connected to the adjusting knob;

[0015] The shift fork abuts against the spring, and the shift fork is slidably connected to the guide rod and the rotating shaft;

[0016] The adjusting wheel is sleeved and fixed on the rotating shaft, and the adjusting wheel cooperates with the shift fork;

[0017] During adjustment, rotate the adjustment knob to rotate the rotating shaft, which drives the adjusting wheel to rotate. The adjusting wheel cooperates with the shift fork to push the shift fork to slide along the guide rod and the rotating shaft, thereby adjusting the compression amount of the spring.

[0018] Further, one side of the adjusting wheel is provided with a gear surface that surrounds the center of the adjusting wheel and gradually rises for cooperating with the shift fork. Along the extending direction of the gear surface, at least two spaced gear grooves are provided on the gear surface. A positioning rod that cooperates with the gear groove is provided on the shift fork, and the shift fork cooperates with the gear surface through the positioning rod.

[0019] The beneficial effects of the present utility model are:

[0020] In the built-in household rice mill of the present utility model, the rice outlet cylinder 2 is built into the machine shell 1 and included by the machine shell 1, that is, the rice outlet cylinder 2 is completely built into the machine shell 1, and a rice storage bin 12 is arranged inside the machine shell. The rice mill is not only beautiful, but also the rice output and reception inside the rice mill will not have the problem that the rice outlet cylinder (rice outlet housing) is easy to scratch people;

[0021] By completely building the rice outlet cylinder 2 into the machine shell 1 and arranging the rice storage bin 12 inside the machine shell, the rice output and reception inside the rice mill can also reduce dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 2 is a structural schematic diagram of the present utility model;

[0024] Figure 3 is a structural schematic diagram of an adjustment structure of the present utility model;

[0025] Figure 4 is another structural schematic diagram of the present utility model;

[0026] Figure 5 is another structural schematic diagram of an adjustment structure of the present utility model;

[0027] Figure 6 is a structural schematic diagram of the adjusting wheel;

[0028] As shown in the figure: the machine case 1, the rice outlet tube 2, the hopper 4, the motor 5, the rice milling mechanism 6, the adjustment structure 8, the bran storage bin 11, the rice storage bin 12, the secondary rice outlet 21, the broken rice sieve plate 22, the broken rice outlet 23, the primary rice outlet 61, the rice blocking plate 71, the guide rod 72, the spring 73, the adjustment motor 81, the adjustment screw rod 82, the pressing plate 83, the adjustment knob 84, the adjustment wheel 85, the rotating shaft 86, the fork 87, the bran receiving container 111, the rice receiving container 121, the gear surface 851, the gear slot 852, the positioning rod 871. Detailed implementation manners

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] As Figure 1 、 Figure 2 shown, the built-in household rice milling machine of the present utility model includes a machine case 1, a hopper 4 and a rice milling machine main body. The rice milling machine main body includes a motor 5 and a rice milling mechanism 6 connected to the motor 5. The rice milling machine main body is disposed inside the machine case 1. The hopper 4 is disposed above the rice milling machine main body, and the bottom opening of the hopper 4 is connected to the feed inlet of the rice milling machine main body. One end of the rice milling mechanism 6 has a primary rice outlet 61. A bran storage bin 11 is provided inside the machine case 1 and is communicated with the bran outlet of the rice milling machine main body and is located below the rice milling machine main body. An rice outlet tube 2 is provided at the primary rice outlet 61. The primary rice outlet 61 is communicated with the inside of the rice outlet tube 2. A secondary rice outlet 21 is provided on the rice outlet tube 2 and is located below the primary rice outlet 61. The rice outlet tube 2 is disposed inside the machine case 1 and is included by the machine case 1. A rice storage bin 12 is further provided inside the machine case 1 and is located below the secondary rice outlet 21.

[0031] During rice milling, the motor 5 provides power for the rice milling mechanism 6. Grains enter the rice milling mechanism 6 from the hopper 4, and after being milled by the rice milling mechanism 6, they form rice grains. The rice grains enter the rice outlet tube 2 through the primary rice outlet 61, flow out from the secondary rice outlet 21 along the rice outlet tube 2, and fall into the rice storage bin 12. Rice bran flows out from the bran outlet of the rice milling machine main body and falls into the bran storage bin. The built-in household rice milling machine of the present utility model disposes the rice outlet tube 2 inside the machine case 1 and is included by the machine case 1, that is, the rice outlet tube 2 is completely disposed inside the machine case 1, and a rice storage bin 12 is provided inside the machine case. The rice milling machine is not only beautiful, but also for the internal rice output and rice receiving of the rice milling machine, there will be no problem that the rice outlet tube (rice outlet housing) is easy to scratch people. In addition, in order to minimize the volume and mass of the rice milling machine as much as possible to facilitate household use, a bran suction fan is generally not provided in the household rice milling machine, which inevitably leads to that the rice grains will be mixed with fine bran, broken rice, rice husks and other dust, and dust pollution will be generated during rice output. However, by disposing the rice outlet tube 2 completely inside the machine case 1 and performing internal rice output and rice receiving in the rice milling machine, the surrounding environment can also be less polluted by dust.

[0032] In order to separate fine bran and broken rice from the milled rice and improve the product quality, as Figure 2 shown, a broken rice sieve plate 22 is further provided in the rice discharging cylinder 2 below the primary rice discharging port 61. The broken rice sieve plate 22 is inclined downward, and the lower end of the broken rice sieve plate 22 is connected to the secondary rice discharging port 21, so that the milled rice flowing down from the broken rice sieve plate 22 can flow out from the secondary rice discharging port 21. A broken rice discharging port 23 communicating with the bran storage bin 11 is provided below the broken rice sieve plate 22. After the milled rice flows out from the primary rice discharging port 61, it will fall onto the broken rice sieve plate 22 and flow along the broken rice sieve plate 22. Smaller broken rice, rice bran, rice husk, etc. fall through the sieve holes of the broken rice sieve plate 22 to the lower part of the broken rice sieve plate 22 and finally flow out from the broken rice discharging port 23 and enter the bran storage bin 11. The milled rice that fails to pass through the broken rice sieve plate 22 enters the secondary rice discharging port along the broken rice sieve plate 22 and flows out through the secondary rice discharging port and falls into the rice storage bin 12, thereby improving the quality of the product (the milled rice flowing out from the secondary rice discharging port).

[0033] As Figure 1 shown, in order to facilitate bran collection, rice collection, bran removal and rice removal, a pull-out rice receiving container 121 is provided in the rice storage bin 12, and a pull-out bran receiving container 111 is provided in the bran storage bin 11.

[0034] Generally, the rice storage bin 12 and the bran storage bin 11 are horizontally pulled out, and the specific pulling direction can be in all directions. In the present utility model, optimally, as Figure 1 shown, the rice receiving container 121 is horizontally pulled out along the axis direction of the rice milling mechanism 6, and the bran receiving container 111 is horizontally pulled out along the direction perpendicular to the pulling direction of the rice receiving container 121. This way is beneficial to making the structure of the rice milling machine more compact, especially beneficial to reducing the length of the rice milling machine.

[0035] In order to be able to adjust the degree of rice milling, a rice discharging adjusting mechanism is provided on the rice discharging cylinder 2 of the rice milling machine of the present utility model. The rice discharging adjusting mechanism includes a rice blocking structure and an adjusting structure 8. As Figures 2 to 5As shown, the rice blocking structure is disposed within the rice outlet 2 and includes a rice blocking plate 71, a guide rod 72, and a spring 73. The rice blocking plate 71 covers the primary rice outlet 61. The guide rod 72 is slidably disposed within the rice outlet 2 along the axial direction of the rice milling mechanism 6 to enable sliding along the axial direction of the rice milling mechanism 6. The inner end of the guide rod 72 (the end closest to the rice milling mechanism) is fixedly connected to the rice blocking plate 71. The spring 73 is sleeved on the guide rod 72 and abuts the rice blocking plate 71. The adjustment structure abuts the spring 73 to adjust the compression of the spring 73. The rice blocking plate 71 covers the primary rice outlet, and milled rice is discharged through the gap between the rice blocking plate 71 and the primary rice outlet 61. Adjusting the pressure of the rice blocking plate 71 can adjust the degree of rice milling. The pressure of the rice blocking plate 71 can be adjusted by adjusting the compression of the spring 73 through the adjustment structure. The adjustment structure can be implemented in a variety of ways, as long as the compression of the spring 73 can be adjusted.

[0036] The rice retaining plate 71 and the guide rod 72 can be fixedly connected by welding, bolting or the like.

[0037] In one embodiment of the present invention, Figure 4 and Figure 5 As shown, the adjustment structure is arranged in the casing 1, including an adjusting motor 81, an adjusting screw 82 and a pressure plate 83 abutting against the spring 73 for compressing the spring 73. The adjusting screw 82 is arranged in the rice discharge drum 2 along the axial direction of the rice milling mechanism 6. The adjusting motor 81 is installed on the outside of the rice discharge drum 2 and is transmission-connected with the outer end of the adjusting screw 82 (the end away from the rice milling mechanism). The pressure plate 83 is slidingly connected to the rice discharge drum 2 along the axial direction of the rice milling mechanism 6. The pressure plate 83 is sleeved on the adjusting screw 82 and cooperates with the thread of the adjusting screw 82 so that the adjusting screw 82 can rotate to push the pressure plate 83 to slide along the axial direction of the rice milling mechanism 6. When the pressure of the rice baffle 71 needs to be adjusted, that is, the compression of the spring 73 needs to be adjusted, the motor is started, and the adjusting screw 82 is driven by the motor to rotate forward or reverse. During the rotation of the adjusting screw 82, the pressing plate 83 is pushed to slide along the axial direction of the rice milling mechanism 6, and the spring 73 can be compressed and released by the pressing plate 83, thereby adjusting the compression of the spring 73 and the pressure of the rice baffle 71. The adjustment structure is set to a structure driven by the adjustment motor 81, which does not require manual screwing, which is not only convenient and labor-saving for adjustment, but also convenient for the entire adjustment structure to be set inside the casing. Setting the adjustment structure inside the casing can make the rice milling machine more beautiful and less likely to be damaged by external force collision.

[0038] The adjusting screw 82 can be arranged coaxially or not coaxially with the guide rod 72. Figure 5As shown, in order to facilitate the pressing plate 83 to compress the spring, the guide rod 72 is coaxially arranged with the adjusting screw 82. The outer end of the guide rod 72 is inserted into the blind hole provided at the inner end of the adjusting screw 82 and is rotationally and slidably engaged with the blind hole. Since the spring 73 is sleeved on the guide rod and the adjusting screw 82 is coaxial with the guide rod 72, the pressing plate is more forcefully loaded when compressing the spring, making it easier to compress the spring. The outer end of the guide rod 72 is inserted into the blind hole provided at the inner end of the adjusting screw 82 and is rotationally and slidably engaged with the blind hole. The guide rod 72 can slide along the axial direction of the rice milling mechanism 6 through the blind hole, which facilitates the rotation of the adjusting screw 82 and can make the entire rice output adjusting mechanism more compact, conducive to reducing the volume of the rice mill.

[0039] To prevent the guide rod 72 from rotating due to the rotation of the adjusting screw 82, an anti-rotation structure can be provided on the guide rod 72 as needed to prevent the guide rod from rotating.

[0040] In another embodiment of the present invention, as Figure 2 、 Figure 3 shown, the adjusting structure includes an adjusting knob 84, an adjusting wheel 85, a fork 87, and a rotating shaft 86 rotatably arranged above the guide rod 72; the adjusting knob 84 is arranged in a groove on the outer side of the machine housing 1; the rotating shaft 86 is arranged parallel to the guide rod 72, and one end of the rotating shaft 86 extends outside the machine housing 1 and is fixedly connected to the adjusting knob 84; the fork 87 abuts against the spring 73 to compress the spring, and the fork 87 is slidably connected to the guide rod 72 and the rotating shaft 86; the adjusting wheel 85 is sleeved and fixed on the rotating shaft 86, and the adjusting wheel 85 cooperates with the fork 87. During adjustment, the adjusting knob 84 is rotated to rotate the rotating shaft 86, which drives the adjusting wheel 85 to rotate. The adjusting wheel 85 cooperates with the fork 87 to push the fork 87 to slide along the guide rod 72 and the rotating shaft 86, thereby adjusting the compression amount of the spring 73. Compared with the motor adjusting structure, the above adjusting structure has a lower cost, and by arranging the adjusting knob 84 in the groove on the outer side of the machine housing 1, it can be avoided that the adjusting knob 84 protrudes or protrudes too much from the machine housing, which can reduce collisions and scratches, is conducive to protecting the adjusting structure, and can also make the appearance of the rice mill more beautiful. The adjusting wheel 85 can be sleeved and fixed on the rotating shaft 86 by means of bolts, screws or welding, etc.

[0041] The adjusting wheel 85 can cooperate with the fork 87 by setting an inclined surface to push the fork to slide during rotation. In the embodiment of the present invention, as Figure 6As shown, a gear position surface 851 is provided on one side of the adjusting wheel 85. The gear position surface 851 winds around the center of the adjusting wheel 85 and gradually rises for cooperation with the fork 87. At least two spaced-apart gear position grooves 852 are provided on the gear position surface 851 along the extending direction of the gear position surface 851. A positioning rod 871 cooperating with the gear position grooves 852 is provided on the fork 87. The fork 87 cooperates with the gear position surface 851 through the positioning rod 871. During adjustment, when the adjusting wheel 85 rotates with the rotating shaft 86, the gear position surface 851 also rotates, so that different height portions of the gear position surface 851 cooperate with the positioning rod 871. Thus, the fork can be pushed to move and compress the spring by the cooperation between the gear position surface 851 and the positioning rod 871. Since the gear position grooves 852 are provided on the gear position surface 851, when the gear position surface 851 rotates to correspond to the gear position grooves 852, the positioning rod 871 can slide into the gear position grooves 852, thereby realizing gear shifting and fixing the adjusting wheel 85 to prevent it from automatically rotating and affecting the pressure of the rice blocking plate 71. In order to reduce the friction between the positioning rod and the gear position surface and facilitate adjustment, the positioning rod is generally circular and can be rotatably arranged.

Claims

1. An in-built household rice milling machine, comprising a machine case (1), a hopper (4) and a rice milling machine main body. The rice milling machine main body includes a motor (5) and a rice milling mechanism (6) connected to the motor (5). The rice milling machine main body is disposed within the machine case (1). The hopper (4) is disposed above the rice milling machine main body, and the bottom opening of the hopper (4) is connected to the feed inlet of the rice milling machine main body. One end of the rice milling mechanism (6) has a primary rice outlet (61). A chaff storage bin (11) is provided within the machine case (1) below the rice milling machine main body and communicating with the chaff outlet of the rice milling machine main body. It is characterized in that: A rice outlet tube (2) is provided at the primary rice outlet (61). The primary rice outlet (61) is in communication with the interior of the rice outlet tube (2). A secondary rice outlet (21) is provided on the rice outlet tube (2) below the primary rice outlet (61). The rice outlet tube (2) is placed inside the machine housing (1) and is included by the machine housing (1). A rice storage bin (12) is further provided inside the machine housing (1) below the secondary rice outlet (21).

2. The built-in household rice mill according to claim 1, wherein: A broken rice sieve plate (22) is further provided inside the rice outlet tube (2) below the primary rice outlet (61). The broken rice sieve plate (22) is inclined downward. The lower end of the broken rice sieve plate (22) is connected to the secondary rice outlet (21) so that the rice grains flowing down from the broken rice sieve plate (22) can flow out from the secondary rice outlet (21). A broken rice discharge port (23) communicating with the chaff storage bin (11) is provided below the broken rice sieve plate (22).

3. The built-in household rice mill according to claim 1, characterized in that: A pull-out rice receiving container (121) is provided inside the rice storage bin (12), and a pull-out chaff receiving container (111) is provided inside the chaff storage bin (11).

4. The built-in household rice mill according to claim 3, wherein: The rice receiving container (121) is horizontally pulled out along the axial direction of the rice milling mechanism (6), and the chaff receiving container (111) is horizontally pulled out along a direction perpendicular to the pulling direction of the rice receiving container (121).

5. The built-in household rice mill according to claim 1, characterized in that: An outlet adjustment mechanism is provided on the rice outlet tube (2). The outlet adjustment mechanism includes a rice blocking structure and an adjustment structure. The rice blocking structure is arranged inside the rice outlet tube (2) and includes a rice blocking plate (71), a spring (73), and a guide rod (72). The rice blocking plate (71) covers the primary rice outlet (61). The guide rod (72) is slidably arranged inside the rice outlet tube (2) along the axial direction of the rice milling mechanism (6). The inner end of the guide rod (72) is fixedly connected to the rice blocking plate (71). The spring (73) is sleeved on the guide rod (72) and abuts against the rice blocking plate (71). The adjustment structure abuts against the spring (73) to adjust the compression amount of the spring (73).

6. The built-in household rice milling machine according to claim 5, wherein: The adjustment structure is arranged inside the machine housing (1) and includes an adjustment motor (81), an adjustment screw rod (82), and a pressing plate (83) that abuts against the spring (73) to compress the spring (73). The adjustment screw rod (82) is arranged inside the rice outlet tube (2) along the axial direction of the rice milling mechanism (6). The adjustment motor (81) is installed outside the rice outlet tube (2) and is drivingly connected to the outer end of the adjustment screw rod (82). The pressing plate (83) is slidably connected to the rice outlet tube (2) along the axial direction of the rice milling mechanism (6). The pressing plate (83) is sleeved on the adjustment screw rod (82) and is in threaded cooperation with the adjustment screw rod (82) so that the pressing plate (83) can be pushed to slide along the axial direction of the rice milling mechanism (6) by the rotation of the adjustment screw rod (82).

7. The built-in household rice mill according to claim 6, characterized in that: The guide rod (72) is coaxially arranged with the adjustment screw rod (82). The outer end of the guide rod (72) is inserted into a blind hole provided at the inner end of the adjustment screw rod (82) and is in rotational and sliding cooperation with the blind hole.

8. The built-in household rice milling machine according to claim 5, characterized in that: The adjusting structure includes an adjusting knob (84), an adjusting wheel (85), a fork (87), and a rotating shaft (86) rotatably arranged above the guide rod (72); The adjusting knob (84) is arranged in a groove on the outer side of the machine shell (1); The rotating shaft (86) is arranged parallel to the guide rod (72), and one end of the rotating shaft (86) extends outside the machine shell (1) and is fixedly connected to the adjusting knob (84); The fork (87) abuts against the spring (73), and the fork (87) is slidably connected to the guide rod (72) and the rotating shaft (86); The adjusting wheel (85) is sleeved and fixed on the rotating shaft (86), and the adjusting wheel (85) cooperates with the fork (87); During adjustment, the adjusting knob (84) is rotated to rotate the rotating shaft (86), which drives the adjusting wheel (85) to rotate. The adjusting wheel (85) cooperates with the fork (87) to push the fork (87) to slide along the guide rod (72) and the rotating shaft (86), thereby adjusting the compression amount of the spring (73).

9. The built-in household rice mill according to claim 8, characterized in that: One side of the adjusting wheel (85) is provided with a gear surface (851) that surrounds the center of the adjusting wheel (85) and gradually rises for cooperating with the fork (87). At least two spaced gear slots (852) are arranged along the extending direction of the gear surface (851) on the gear surface (851). A positioning rod (871) that cooperates with the gear slot (852) is arranged on the fork (87), and the fork (87) cooperates with the gear surface (851) through the positioning rod (871).

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