Pulping machine

Abstract

The present disclosure relates to a pulping machine comprising: a base; the grinding part is arranged on the base and comprises a first grinding piece and a second grinding piece which are oppositely arranged, a grinding cavity communicated with the outside is formed between the first grinding piece and the second grinding piece, and the distance between the first grinding piece and the second grinding piece is adjustable; the power part is used for driving the first abrasive disc or the second abrasive disc to rotate around the central axis of the first abrasive disc or the second abrasive disc; and the electric information detection element is connected with the power part and is used for acquiring electric information of the power part, and the electric information comprises at least one of current, voltage and resistance data. Therefore, the distance between the first abrasive disc and the second abrasive disc can be adjusted in real time according to the obtained electric information condition, the food safety in the food manufacturing process is improved, and meanwhile the distance between the first abrasive disc and the second abrasive disc can be accurately and rapidly adjusted; and the situation that the power part is burnt out or the temperature of ground paste is too high due to improper distance adjustment is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of food processing, and more particularly, to a pulp grinder. Background Art

[0002] During the use of a pulp grinder, the gap between the grinding wheels needs to be adjusted frequently. Generally, the finer the grinding, the higher the protein extraction rate. However, there is a direct relationship between the grinding fineness and the gap between the grinding wheels. The smaller the gap, the finer the grinding particle size. But when the gap between the grinding wheels of the pulp grinder is adjusted to be very small, it will cause the motor to burn or the temperature of the paste to rise too high, which is not only disadvantageous to the service life of the equipment but also to protein extraction. For the adjustment of the grinding wheel gap, currently, all operators use methods such as feeling by hand and observing to adjust by feeling, without a quantitative standard. Not only will there be a large error in everyone's feeling, making it impossible to determine the specific situation of the gap and thus unable to balance the grinding particle size and equipment safety, but it is also very inconvenient for users and managers to operate when adjusting by feeling. At the same time, feeling the gap by hand will also contaminate the paste and affect food safety. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a pulp grinder to solve the problem of inaccurate adjustment of the grinding wheels of the pulp grinder in the related art.

[0004] To achieve the above object, the present disclosure provides a pulp grinder, including:

[0005] A base;

[0006] A grinding part, arranged on the base, the grinding part includes a first grinding disc and a second grinding disc arranged oppositely, a grinding cavity communicating with the outside is arranged between the first grinding disc and the second grinding disc, and the distance between the first grinding disc and the second grinding disc is adjustable;

[0007] A power part, used to drive the first grinding disc or the second grinding disc to rotate around its own central axis; and

[0008] An electrical information detection element, the electrical information detection element is connected to the power part and is used to obtain the electrical information of the power part, and the electrical information includes at least one of current, voltage and resistance data.

[0009] Optionally, the electrical information detection element is a digital display ammeter.

[0010] Optionally, the first grinding disc can move along its own central axis to adjust the distance from the second grinding disc,

[0011] The power part is in transmission connection with the second grinding disc to drive the second grinding disc to rotate around its own central axis.

[0012] Optionally, the grinding part includes:

[0013] An adjusting sleeve extending along the central axis of the first grinding disc, the adjusting sleeve being relatively fixed to the first grinding disc along the direction of the central axis; and

[0014] A fixing sleeve fixedly connected to the base, the fixing sleeve sleeved outside the adjusting sleeve, and the adjusting sleeve being threadedly connected to the fixing sleeve to be able to drive the first grinding disc to move along the central axis.

[0015] Optionally, the first grinding disc is fixedly connected to the adjusting sleeve.

[0016] Optionally, a first flange is fixedly connected to the first grinding disc, and a first limiting structure is provided between the first flange and the base to relatively fix the first grinding disc and the base along the circumferential direction of the first grinding disc.

[0017] A second limiting structure is provided between the first flange and the adjusting sleeve to rotatably connect the adjusting sleeve and the first flange and relatively fix them along the direction of the central axis.

[0018] Optionally, the first limiting structure includes:

[0019] A fixing rod fixedly connected to the base and extending parallel to the central axis of the first grinding disc, and

[0020] A limiting end fixedly connected to the first flange and extending radially outward along the first grinding disc, the limiting end being able to abut against the fixing rod to limit the first grinding disc along the circumferential direction of the first grinding disc.

[0021] Optionally, the first flange is sleeved outside the adjusting sleeve, and the second limiting structure includes:

[0022] An annular groove provided on the inner circumferential surface of the first flange, and

[0023] A protrusion fixedly connected to the outer circumferential surface of the adjusting sleeve and matching with the annular groove, the protrusion being slidably connected in the annular groove.

[0024] Optionally, the first flange includes:

[0025] A flange body, the annular groove being provided on the first end face of the flange body; and

[0026] A flange cover detachably connected to the first end face.

[0027] Optionally, the grinding part further includes a locking handle sleeved outside the adjusting sleeve. The locking handle is threadedly connected to the adjusting sleeve to abut against the end face of the fixed sleeve.

[0028] Through the above technical solution, an electrical information detection element is added to the pulping machine. By obtaining the electrical information of the power part to judge the distance between the first grinding disc and the second grinding disc according to the electrical information, the distance between the first grinding disc and the second grinding disc can be adjusted in real time according to the obtained electrical information. It is not necessary to observe with the naked eye or touch the first grinding disc or the second grinding disc for measurement. This not only improves the food safety during the food manufacturing process, but also can accurately and quickly adjust the distance between the first grinding disc and the second grinding disc, reducing the situation of burnout of the power part or excessive temperature rise of the ground pulp caused by improper distance adjustment, and improving the production efficiency.

[0029] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0031] Figure 1 is a schematic diagram of a pulping machine according to an embodiment of the present disclosure.

[0032] Figure 2 is a top view of a pulping machine according to an embodiment of the present disclosure.

[0033] Figure 3 is a side view of a pulping machine according to an embodiment of the present disclosure.

[0034] Figure 4 is Figure 3 a half-sectional view of part A on the basis.

[0035] Figure 5 is a schematic diagram of a pulping machine according to another embodiment of the present disclosure.

[0036] Figure 6 is a top view of a pulping machine according to another embodiment of the present disclosure.

[0037] DESCRIPTION OF THE REFERENCE NUMERALS

[0038] 1 - Base; 11 - Bottom plate; 12 - Base; 2 - Grinding part; 20 - Grinding cavity; 21 - First grinding disc; 211 - First flange; 2110 - Flange body; 2111 - Limiting end; 2112 - Annular groove; 2113 - Flange cover; 22 - Second grinding disc; 221 - Second flange; 23 - Adjusting sleeve; 231 - Adjusting handle; 232 - Protrusion; 24 - Fixed rod; 25 - Fixed sleeve; 251 - Fixed support end; 26 - Locking handle; 27 - Grinding cover; 271 - Discharge port; 28 - Material tray; 3 - Rotating shaft; 4 - Power part; 41 - Driving part; 42 - Transmission part; 5 - Electrical information detection element; 6 - Hopper. Detailed implementation manners

[0039] The following will describe in detail the detailed implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0040] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" are defined according to the arrangement direction of the pulp grinder during actual use, and the orientation terms such as "inner" and "outer" are defined according to the contour of the corresponding components. The purpose of using terms such as "first" and "second" is to distinguish different components, and they do not have sequentiality and importance. In addition, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements.

[0041] According to an implementation manner of the present disclosure, as Figures 1 to 6 shown, a pulp grinder is provided, which may include a base 1, a grinding part 2, a power part 4, and an electrical information detection element 5. The grinding part 2 is arranged on the base 1. The grinding part 2 includes a first grinding disc 21 and a second grinding disc 22 arranged oppositely. A grinding cavity 20 communicating with the outside is arranged between the first grinding disc 21 and the second grinding disc 22, and the distance between the first grinding disc 21 and the second grinding disc 22 is adjustable. The power part 4 can be used to drive the first grinding disc 21 or the second grinding disc 22 to rotate around its own central axis, so that the first grinding disc 21 and the second grinding disc 22 can grind the raw materials in the grinding cavity 20. The electrical information detection element 5 can be connected to the power part 4 to obtain the electrical information of the power part 4, and the electrical information includes at least one of current, voltage, and resistance data.

[0042] Through the above technical solution, an electrical information detection component 5 is added to the pulp grinder. By obtaining the electrical information of the power unit 4, the distance between the first grinding disc 21 and the second grinding disc 22 can be judged according to the electrical information. Thus, the distance between the first grinding disc 21 and the second grinding disc 22 can be adjusted in real time according to the obtained electrical information situation, without the need for visual observation or touching the first grinding disc 21 or the second grinding disc 22 for measurement. This not only improves the food safety during the food manufacturing process, but also can accurately and quickly adjust the distance between the first grinding disc 21 and the second grinding disc 22, reducing the situation of the power unit 4 being burned out or the temperature of the ground pulp rising too high caused by improper distance adjustment, and improving the production efficiency.

[0043] It should be noted that the electrical information detection component 5 can be a digital display ammeter, which is used to detect the current of the power unit 4 and display the current data in real time for the operator to observe. The magnitude of the current is inversely proportional to the distance between the first grinding disc 21 and the second grinding disc 22. The larger the current, the smaller the distance between the first grinding disc 21 and the second grinding disc 22. Whether the distance adjustment is appropriate can be judged by the magnitude of the current, so as to adjust the gap between the first grinding disc 21 and the second grinding disc 22. The electrical information detection component 5 can also be a voltmeter or an ohmmeter, and the present disclosure does not limit this. In addition, the electrical information detection component 5 can also be connected to a controller, and the controller can convert the obtained electrical information data into the gap data between the first grinding disc 21 and the second grinding disc 22 in real time and project it on the display screen of the controller. The present disclosure also does not limit this.

[0044] Regarding the setting of the grinding cavity 20, as Figure 1 and Figure 3 shown, the grinding cavity 20 can be formed between the first grinding disc 21 and the second grinding disc 22, and gradually becomes narrower from the center to both sides. The feeding end of the grinding cavity 20 is located at the center of the grinding cavity 20, and the discharging end of the grinding cavity 20 is located on both sides of the grinding cavity 20. Since the soybeans move gradually from the center to the outside under the action of centrifugal force after entering the pulp grinder, with the center feeding and the outside discharging, and when the center is higher and the outside is lower, it is easier to grind the soybeans in cooperation with the movement track of the pulp grinder driving the soybeans, improving the pulp grinding efficiency. The pulp grinder can also include a hopper 6 detachably arranged above the grinding part 2, and the hopper 6 and the grinding cavity 20 can be communicated through an adjusting sleeve 23. The hopper 6 can prevent the raw materials from splashing when adding materials to the grinding cavity 20. In addition, the hopper 6 can also be an automatic feeding hopper, that is, the hopper 6 can be filled with materials first, and the hopper 6 can automatically communicate with the grinding cavity 20 at intervals to release some raw materials into it. The present disclosure does not limit this.

[0045] Furthermore, as Figure 1 and Figure 3 ​As shown, the first grinding disc 21 can move along its own central axis to adjust the spacing from the second grinding disc 22. The power unit 4 can be drivingly connected to the second grinding disc 22 to drive the second grinding disc 22 to rotate about its own central axis. The pulping machine can further include a rotating shaft 3. The rotating shaft 3 is arranged in the base 1, and the rotating shaft 3 can be connected to the second grinding disc 22 through a second flange 221 on the second grinding disc 22. The power unit 4 is connected to the rotating shaft 3 and can drive the rotating shaft 3 to rotate. Here, the power unit 4 can include a driving member 41. The driving member 41 can be a motor. The output end of the motor is connected to the rotating shaft 3, and the rotating shaft 3 is driven to rotate by the rotation of the motor. The base 1 can further include a bottom plate 11 and a pedestal 12. The bottom plate 11 can be a hollow structure. The pedestal 12 can be arranged above the bottom plate 11. The grinding part 2 is arranged above the pedestal 12. The rotating shaft 3 is located in the pedestal 12. The power unit 4 can further include a transmission member 42. The driving member 41 is arranged above the bottom plate 11. The transmission member 42 is arranged in the bottom plate 11, and the transmission member 42 is respectively connected to the output end of the driving member 41 and the rotating shaft 3. In this way, the driving member 41 and the pulping machine can be installed on the same side, which is convenient for the overall placement of the pulping machine, reduces the height of the pulping machine, and is also convenient for the installation and maintenance of the pulping machine.

[0046] Further, as Figures 1 to 3 shown, the grinding part 2 can include an adjusting sleeve 23 and a fixing sleeve 25. The adjusting sleeve 23 extends along the central axis of the first grinding disc 21, and the adjusting sleeve 23 is relatively fixed to the first grinding disc 21 in the direction of the central axis. The fixing sleeve 25 is fixedly connected to the base 1. The fixing sleeve 25 can be sleeved outside the adjusting sleeve 23. The adjusting sleeve 23 and the fixing sleeve 25 can be threadedly connected to drive the first grinding disc 21 to move along the central axis. By the rotational movement between the adjusting sleeve 23 and the fixing sleeve 25, the moving speed of the first grinding disc 21 can be slowly adjusted to avoid the situation that when the adjusting force is too large, the first grinding disc 21 collides with the second grinding disc 22 and damages the first grinding disc 21 or the second grinding disc 22. In this way, when the position of the first grinding disc 21 needs to be adjusted, the adjusting sleeve 23 is rotated. Since the adjusting sleeve 23 and the first grinding disc 21 are axially fixed, the adjusting sleeve 23 will drive the first grinding disc 21 to generate displacement to adjust the spacing between the first grinding disc 21 and the second grinding disc 22.

[0047] Here, the adjusting sleeve 23 can have two ends extending out of the fixing sleeve 25. One end can be connected to the first grinding disc 21, and an adjusting handle 231 can be fixedly connected to the other end. The adjusting handle 231 can extend radially away from the adjusting sleeve 23. When adjusting, the adjusting handle 231 can be held and turned to more conveniently adjust the position of the adjusting sleeve 23 relative to the fixing sleeve 25.

[0048] Regarding the connection between the first grinding plate 21 and the adjusting sleeve 23, the first grinding plate 21 can be fixedly connected to the adjusting sleeve 23. In this way, when the adjusting sleeve 23 and the fixed sleeve 25 are locked, the first grinding plate 21 is also limited in the circumferential direction, and when the second grinding plate 22 rotates, it will not drive the first grinding plate 21 to rotate.

[0049] In addition, the first grinding disc 21 can also be rotatably connected relative to the adjustment sleeve 23. Specifically, a first flange 211 can be fixedly connected to the first grinding disc 21. A first limiting structure is provided between the first flange 211 and the base 1 to ensure that the first grinding disc 21 and the base 1 are relatively fixed along the circumference of the first grinding disc 21. A second limiting structure is provided between the first flange 211 and the adjustment sleeve 23 to ensure that the adjustment sleeve 23 and the first flange 211 are rotatably connected and relatively fixed along the central axis. That is, the adjustment sleeve 23 can only rotate circumferentially along the first flange 211. The first flange 211 can limit the adjustment sleeve 23 in the axial direction. In conjunction with the first limiting structure, the first grinding disc 21 does not rotate when the adjustment sleeve 23 adjusts the spacing between the first grinding disc 21 and the second grinding disc 22. In addition, the first limiting structure keeps the first grinding disc 21 fixed in the circumferential direction, which can also effectively improve the grinding effect between the first grinding disc 21 and the second grinding disc 22.

[0050] Furthermore, if Figure 3 As shown, the first limiting structure may include a fixing rod 24 and a limiting end 2111. The fixing rod 24 may be fixedly connected to the base 1 and extend parallel to the central axis of the first grinding disc 21. Two fixing rods 24 may be provided. The limiting end 2111 may be fixedly connected to the first flange 211 and extend radially outward from the first grinding disc 21. The limiting end 2111 may abut against the fixing rod 24 to limit the position of the first grinding disc 21 along the circumferential direction of the first grinding disc 21. Thus, when the adjustment sleeve 23 adjusts the spacing between the first grinding disc 21 and the second grinding disc 22, the limiting end 2111 abuts against the fixing rod 24, preventing the first grinding disc 21 from rotating. The limiting ends 2111 may each have a U-shaped opening that engages with the fixing rod 24, or one limiting end 2111 may be rotatably connected to one fixing rod 24, while the other limiting end 2111 forms a bayonet that detachably engages with the other fixing rod 24. This disclosure is not limited to this aspect.

[0051] In addition, the fixed sleeve 25 can also be fixedly connected to the base 1 through the fixed rod 24. Specifically, two fixed branch ends 251 can also be formed on the outside of the fixed sleeve 25. One fixed branch end 251 can be rotatably connected to a fixed rod 24, and the other fixed branch end 251 can form a bayonet to be detachably connected to the other fixed rod 24. The present disclosure does not limit this.

[0052] According to one embodiment of the present disclosure,Figure 3 and Figure 4 As shown in Figure 4 , the first flange 211 can be sleeved outside the adjusting sleeve 23. The second limiting structure can include an annular groove 2112 and a protrusion 232. The annular groove 2112 can be arranged on the inner circumferential surface of the first flange 211, and the protrusion 232 can be fixedly connected to the outer circumferential surface of the adjusting sleeve 23 and match with the annular groove 2112. The protrusion 232 can be slidably connected in the annular groove 2112. Here, the contact surfaces between the protrusion 232 and the annular groove 2112 can both be arc surface structures to reduce the friction when they rotate relative to each other. When the adjusting sleeve 23 rotates relative to the fixed sleeve 25, the protrusion 232 can slide in the annular groove 2112. At the same time, the adjusting sleeve 23 can be relatively fixed with the first flange 211 along the central axis direction through the protrusion 232, so as to drive the first flange 211 to move along the central axis.

[0053] Furthermore, to facilitate the assembly between the adjusting sleeve 23 and the first flange 211, as Figure 4 shown in Figure 4 , the first flange 211 can include a flange body 2110 and a flange cover 2113. The annular groove 2112 can be arranged on the inner peripheral edge of the first end face of the flange body 2110. The flange cover 2113 can be detachably connected to the first end face. Specifically, a plurality of bolts can be circumferentially and spacedly arranged on the flange cover 2113 to cooperate with the first end face for connection, so that the flange cover 2113 can abut against the protrusion 232 in the axial direction of the adjusting sleeve 23, and can limit the adjusting sleeve 23 in the axial direction to prevent the adjusting sleeve 23 from disengaging from the first flange 211 and affecting its adjustment of the first abrasive disc 21. During the assembly process, the flange body 2110 can be first sleeved outside the adjusting sleeve 23, and the protrusion 232 of the adjusting sleeve 23 can be accommodated in the annular groove 2112. Then, the flange cover 2113 can be fastened to the first end face through a plurality of bolts to prevent the protrusion 232 from disengaging from the annular groove 2112.

[0054] According to an embodiment of the present disclosure, as Figure 1 and Figure 3As shown, the grinding part 2 may further include a locking handle 26 sleeved outside the adjusting sleeve 23. The locking handle 26 is threadedly connected to the adjusting sleeve 23 and is located on the side of the fixed sleeve 25 away from the first grinding disc 21 to abut against the end face of the fixed sleeve 25. The function of the locking handle 26 is to provide a locking force to make the adjusting sleeve 23 and the fixed sleeve 25 more tightly fixed, preventing the situation that when the power part 4 drives the second grinding disc 22 to rotate at too high a speed, it drives the first grinding disc 21 to rotate. Before adjusting the distance between the first grinding disc 21 and the second grinding disc 22, the locking handle 26 can be rotated to loosen it so that the locking handle 26 is spaced from the fixed sleeve 25. Subsequently, the adjusting sleeve 23 is adjusted to drive the first grinding disc 21 to move. After the adjusting sleeve 23 adjusts the distance between the first grinding disc 21 and the second grinding disc 22 to the target distance, the locking handle 26 is rotated to tighten it until the locking handle 26 abuts against the end face of the fixed sleeve 25.

[0055] According to an embodiment of the present disclosure, as Figures 1 to 6 shown, the grinding part 2 may further include a grinding cover 27. The grinding cover 27 covers the outside of the first grinding disc 21 and the second grinding disc 22. An outlet 271 is formed on the grinding cover 27, and the outlet 271 communicates with the grinding cavity 20. The grinding cover 27 can effectively prevent the slurry from splashing to the outside during the grinding process, which not only loses the finished slurry but also affects the external environment. The structure of the grinding cover 27 cooperating with the outlet 271 can more conveniently collect the ground slurry.

[0056] Furthermore, as Figure 1 and Figure 3 shown, the grinding part 2 may further include a material tray 28 circumferentially arranged outside the second grinding disc 22. The material tray 28 is arranged on the base 1 and is located in the grinding cover 27. The material tray 28 is located below the grinding cavity 20 and is used to receive the discharge from the grinding cavity 20. Here, in order to facilitate the discharge, the material tray 28 can be inclined, and the side of the material tray 28 close to the outlet 271 is lower than the side of the material tray 28 away from the outlet 271. As Figure 2 shown, the setting position of the outlet 271 can be on the side of the grinding cover 27 away from the driving part 41, or as Figure 5 and Figure 6 shown, the outlet 271 is located in front of the grinding cover 27. Both setting methods avoid the driving part 41 to prevent interference with the driving part 41 and affect the discharge.

[0057] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0058] In addition, it should be noted that, for the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0059] In addition, any combination can be made among the various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A pulping machine, characterized in that, Comprising: A base; A grinding part, arranged on the base, the grinding part includes a first grinding disc and a second grinding disc arranged oppositely, a grinding cavity communicating with the outside is arranged between the first grinding disc and the second grinding disc, and the distance between the first grinding disc and the second grinding disc is adjustable; A power part, used to drive the first grinding disc or the second grinding disc to rotate around its own central axis; And An electrical information detection element, the electrical information detection element is connected to the power part and is used to obtain the electrical information of the power part, and the electrical information includes at least one of current, voltage and resistance data.

2. The pulp grinder according to claim 1, wherein The electrical information detection element is a digital display ammeter.

3. The pulp grinder according to claim 1, wherein, The first grinding disc can move along its own central axis to adjust the distance from the second grinding disc. The power part is in transmission connection with the second grinding disc to drive the second grinding disc to rotate around its own central axis.

4. The refiner according to claim 3, characterized in that, The grinding part includes: An adjusting sleeve, extending along the central axis of the first grinding disc, and the adjusting sleeve is relatively fixed with the first grinding disc along the direction of the central axis; and A fixed sleeve, fixedly connected to the base, the fixed sleeve is sleeved outside the adjusting sleeve, and the adjusting sleeve is in threaded connection with the fixed sleeve to be able to drive the first grinding disc to move along the central axis.

5. The refiner according to claim 4, characterized in that, The first grinding disc is fixedly connected to the adjusting sleeve.

6. The refiner according to claim 4, characterized in that, A first flange is fixedly connected to the first grinding disc, and a first limiting structure is arranged between the first flange and the base to make the first grinding disc and the base relatively fixed along the circumferential direction of the first grinding disc. A second limiting structure is arranged between the first flange and the adjusting sleeve to make the adjusting sleeve and the first flange rotatably connected and relatively fixed along the direction of the central axis.

7. The refiner according to claim 6, characterized in that, The first limiting structure includes: A fixed rod, fixedly connected to the base and extending parallel to the central axis of the first grinding disc, and A limiting end, fixedly connected to the first flange and extending radially outward along the first grinding disc, and the limiting end can abut against the fixed rod to limit the first grinding disc along the circumferential direction of the first grinding disc.

8. The pulp grinder according to claim 6, characterized in that, The first flange is sleeved outside the adjusting sleeve, and the second limiting structure includes: An annular groove, arranged on the inner peripheral surface of the first flange, and A protrusion, fixedly connected to the outer peripheral surface of the adjusting sleeve and matching with the annular groove, and the protrusion is slidably connected in the annular groove.

9. The refiner according to claim 8, characterized in that, The first flange includes: A flange body, and the annular groove is arranged on the first end surface of the flange body; and A flange cover, detachably connected to the first end surface.

10. The refiner according to claim 4, characterized in that, The grinding part further includes a locking handle sleeved outside the adjusting sleeve, and the locking handle is in threaded connection with the adjusting sleeve to abut against the end surface of the fixed sleeve.

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