Grinding door and double-disc grinding equipment

Abstract

The utility model relates to a grinding door and double-disc grinding equipment, the grinding door is used for a machine body of the double-disc grinding equipment, and the grinding door comprises a machine cover, a grinding wheel, a driving device and a driving device, and the machine cover is detachably mounted on the machine body; the power part is arranged on the machine cover and comprises a power output end; wherein a cutter feeding and retracting module is further arranged on the machine cover, and the cutter feeding and retracting module is integrally and detachably installed on the machine cover; the cutter feeding and retracting module comprises an outer shell and a cutter feeding and retracting structure integrally arranged in the outer shell. The outer shell is detachably installed outside the machine cover, the input end of the cutter feeding and retracting structure is detachably connected with the power output end, and the output end of the cutter feeding and retracting structure extends into the machine body and is detachably connected to an outer grinding disc in the machine body. The cutter feeding and retracting module is independently and integrally arranged and integrally and detachably connected to the machine cover, and mounting and dismounting are convenient.

Description

Technical Field

[0001] The present application relates to the technical field of pulping equipment, and in particular to a grinding door and double-disc grinding equipment. Background Art

[0002] Double disc refiner is a new generation of pulp beating equipment, which is suitable for continuous beating of chemical pulp, mechanical pulp, waste paper pulp and other pulps. It is currently the most ideal pulping equipment.

[0003] like Figure 1 As shown, in the prior art, a grinding door 2 is provided on the body 11 of the double-disc grinding equipment 1, and an advance and retract module 3 is installed inside the grinding door 2. The advance and retract module 3 is composed of a worm gear, a worm, a feed screw, a bearing and a driving gear motor. The advance or retract operation of the outer grinding disc 12 inside the double-disc grinding equipment 1 is controlled by the advance and retract module 3. Since the advance and retract module 3 is integrated inside the grinding door 2, and has a complex structure and a large size, it is inconvenient to maintain and operate. When replacing various parts, the entire grinding door 2 needs to be disassembled, so the overall maintenance cost is relatively high. Utility Model Content

[0004] Based on this, a grinding door and a double-disc grinding device are provided, in which the advance and retract blade mechanisms are independently integrated and connected to the machine cover in an integral and detachable manner, so that installation and disassembly are convenient.

[0005] On the one hand, a grinding door is provided for use on a body of a double-disc grinding device, the grinding door comprising: a machine cover, the machine cover being detachably mounted on the machine body; a power unit, the power unit being arranged on the machine cover and comprising a power output end; wherein a knife advance and retreat module is also arranged on the machine cover, the knife advance and retreat module being detachably mounted on the machine cover as a whole; the knife advance and retreat module comprising an outer shell and a knife advance and retreat structure integrated in the outer shell; the outer shell being detachably mounted on the outside of the machine cover, the input end of the knife advance and retreat structure being detachably connected to the power output end, the output end of the knife advance and retreat structure extending into the machine body, and being detachably connected to an outer grinding disc in the machine body.

[0006] Optionally, the cover is hinged to the body via a hinge.

[0007] Optionally, the power unit includes a feed reduction motor, and the output shaft of the feed reduction motor is the power output end; the power output end of the feed reduction motor is detachably connected to the input end of the feed and retract structure via a coupling.

[0008] Optionally, the advance and retract structure includes a worm wheel, a worm and a feed screw; a chamber is provided inside the outer shell, the worm wheel, the worm and the feed screw are all arranged in the chamber, and the worm wheel and the worm are meshed and connected with each other, the feed screw is passed through the middle position of the worm wheel and are connected together by a helical thread; one end of the worm is the input end, and is detachably connected to the power output end through a coupling; one end of the feed screw is the output end, and is detachably connected to the outer grinding disc.

[0009] Optionally, a base is provided on the outside of the outer shell, and the base is detachably connected to the machine cover by bolts.

[0010] Optionally, the base and the outer shell are integrally formed.

[0011] Optionally, a flange is further provided on the outside of the outer shell, and the flange is detachably connected to the power unit by bolts; preferably, the flange and the outer shell are integrally formed.

[0012] Optionally, a sealing ring is provided on the inner side surface of the machine cover, and the sealing ring is pressed tightly between the machine cover and the machine body.

[0013] Optionally, a lining ring is provided on the inner side surface of the machine cover, a sealing installation groove is provided on the lining ring, and the sealing ring is installed in the sealing installation groove.

[0014] On the other hand, a double-disc grinding device is provided, comprising a machine body and the grinding door, wherein a cover of the grinding door is hinged to the machine body.

[0015] Beneficial effects:

[0016] The above-mentioned grinding door and double-disc grinding equipment independently integrate the advance and retract knife module that controls the advance and retract of the outer grinding disc inside the machine body, that is, the advance and retract knife module is a separate component and does not need to be incorporated into the interior of the machine cover, and the advance and retract knife module as a whole can be disassembled and replaced separately, with lower investment in manpower and material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of a double-disc grinding device in the prior art;

[0018] Figure 2 It is a cross-sectional schematic diagram of the double-disc grinding device in this embodiment;

[0019] Figure 3 is a side view of the grinding door in this embodiment;

[0020] Figure 4 For along Figure 3 AA line section view;

[0021] Figure 5 Schematic diagram of the structure of the advance and retract tool module in this embodiment;

[0022] Figure 6 is a cross-sectional view of the advance and retract tool module in this embodiment;

[0023] Figure 7 for Figure 4 Enlarged view of part B in .

[0024] Figure numerals: 1. double-disc grinding equipment; 11. machine body; 12. outer grinding disc; 121. connecting recess; 2. grinding door; 21. machine cover; 211. bushing; 2111. sealing mounting groove; 22. power unit; 221. power output terminal; 3. advance and retract module; 31. outer shell; 311. chamber; 312. base; 313. flange; 32. advance and retract structure; 321. worm gear; 322. worm; 323. feed screw; 3231. connecting protrusion; 4. hinge; 5. coupling. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present application in a schematic manner, and therefore the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0028] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] The embodiment of the present application provides a grinding door and a double-disc grinding device, in which an advance and retract knife module for controlling the forward and backward advance and retract of the outer grinding disc inside the machine body is separately integrated and detachably mounted on the outside of the machine cover. Compared with the traditional method of incorporating the advance and retract knife module into the inside of the machine cover, the integrated method of the present application facilitates the separate disassembly of the advance and retract knife module as a whole, and is convenient for replacement.

[0030] The following is a detailed description of a grinding door provided in this embodiment. Please refer to Figure 2 , Figure 3 As shown, it includes: a machine cover 21 and a power unit 22, the machine cover 21 is arranged at the rear end of the machine body 11, the power unit 22 is arranged on the machine cover 21, and includes a power output end 221; wherein, a knife advance and retreat module 3 is also arranged on the machine cover 21, and the knife advance and retreat module 3 is integrally detachably mounted on the machine cover 21, and the knife advance and retreat module 3 includes an outer shell 31 and an knife advance and retreat structure 32 (such as Figure 6 As shown), the outer shell 31 is detachably mounted on the machine cover 21, the input end of the advance and retract blade structure 32 is detachably connected to the power output end 221, the output end of the advance and retract blade structure 32 extends into the machine body 11, and is detachably connected to the outer static grinding disc 12 in the machine body 11.

[0031] In the present embodiment, the grinding door 2 is used on the body 11 of the double-disc grinding equipment 1. The body 11 is provided with a head end and a tail end. The head end is defined as a side close to the pulp inlet, and the tail end is defined as a side away from the pulp inlet. The machine cover 21 is detachably mounted on the tail end of the machine body 11. The opening and closing of the machine cover 21 can realize the opening and closing of the machine body 11, and then the components inside the machine body 11 can be operated; the advance and retreat module 3 is integrated as an independent whole on the outside of the machine cover 21, and there is no need to be incorporated into the inside of the machine cover 21. Compared with the traditional method of incorporating the entire advance and retreat module 3 into the inside of the machine cover 21, the method in the present embodiment is convenient for replacement or maintenance.

[0032] It should be noted that a main motor is provided at the front end of the machine body 11, and the output shaft of the main motor is connected to the main shaft, which extends into the interior of the machine body 11. A turntable is also provided in the machine body 11, and the turntable is connected to the main shaft extending into the machine body 11. An external static grinding disc 12 is provided on one side of the turntable, and the external static grinding disc 12 and the turntable together constitute a grinding area. The slurry first enters the grinding area through the slurry inlet, and after the slurrying treatment is completed, it is pumped out from the slurry outlet to the next processing step. This part is the conventional structure of the double-disc grinding equipment 1, which will not be repeated here.

[0033] Please continue to refer to Figure 2 , Figure 3 As shown, in this embodiment, it should be noted that the power unit 22 includes a feed reduction motor, and the output shaft of the feed reduction motor is a power output end 221. The power output end 221 of the feed reduction motor is detachably connected to the input end of the feed and retract structure 32 through a coupling 5. In this embodiment, the feed reduction motor can be used to accurately control the advance and retreat degree of the feed and retract structure 32, and then accurately control the gap between the external static grinding disc 12 and the rotating disc to ensure that the gap between the external static grinding disc 12 reaches a safe range. The detachable connection method is also used to facilitate the installation or disassembly work between the input end and the power output end 221 of the feed and retract structure 32. The feed reduction motor can realize slow and fast forward operations, saving invalid operation time, and can realize automatic feed and retract operations through the PLC control system according to different pulping requirements and the operating power set by the main motor.

[0034] Please refer to Figure 3-Figure 6As shown, in some embodiments, the advance and retract structure 32 includes a worm wheel 321, a worm 322 and a feed screw 323; a chamber 311 is provided inside the outer shell 31, and the worm wheel 321, the worm 322 and the feed screw 323 are all arranged in the chamber 311, the worm wheel 321 and the worm 322 are meshed and connected with each other, one end of the worm 322 is the input end of the advance and retract structure 32, and is detachably connected to the power output end 221 of the power unit 22 through a coupling 5; the feed screw 323 is penetrated in the middle position of the worm wheel 321, and the two are connected together by a helical thread, one end of the feed screw 323 is the output end of the advance and retract structure 32, and extends into the body 11 and is detachably connected to the external static grinding disc 12. Thus, during operation, the power unit 22 transmits power to the worm 322, and the worm 322 meshes with the worm wheel 321 to drive the worm wheel 321 to rotate, and the worm wheel 321 is connected to the feed screw 323 through a helical thread, and the feed screw 323 is connected to the outer static grinding disc 12 at the same time, so as to realize the conversion of the rotational motion of the worm wheel 321 into the axial motion of the outer static grinding disc 12, and realize the feed and retract operation. Preferably, the outer static grinding disc 12 is integrally connected with a connecting concave head 121 on the side facing the feed screw 323, and the end of the feed screw 323 is threadedly connected with a connecting convex head 3231, and the connecting convex head 3231 and the connecting concave head 121 cooperate with each other, and the two are detachably connected by bolts.

[0035] Please refer to Figure 3 , Figure 5 As shown, in this embodiment, it should be noted that a base 312 is provided on the outside of the outer shell 31, and the base 312 is detachably connected to the cover 21 by bolts, and the output end of the feed screw 323 is exposed outside the outer shell 31. When the base 312 is installed on the cover 21, the output end of the feed screw 323 just corresponds to the middle position of the cover 21. The middle position of the cover 21 is provided with an axial hole, and the output end of the feed screw 323 passes through the axial hole and extends into the interior of the body 11. Preferably, the base 312 and the outer shell 31 are integrally formed.

[0036] The outer shell 31 is also provided with a flange 313, which is detachably connected to the power unit 22 by bolts. The outer shell 31 and the power unit 22 can be installed or removed by the flange 313. Preferably, the flange 313 and the outer shell 31 are integrally formed.

[0037] Please refer to Figure 2 , Figure 4 and Figure 7As shown, in this embodiment, it should be noted that a sealing ring is provided on the inner side of the cover 21, and the sealing ring is pressed between the cover 21 and the body 11. The use of the sealing ring can prevent the internal medium from corroding the inner side of the cover 21 and other carbon steel parts, greatly extending the service life of the entire cover 21, so that the user's maintenance is more convenient and the manpower and material cost investment is lower.

[0038] In some embodiments, a liner ring 211 is provided on the inner side of the cover 21, and a sealing installation groove 2111 is provided on the liner ring 211, and a sealing ring is installed in the sealing installation groove 2111. By providing the sealing installation groove 2111 on the liner ring 211, the position of the sealing ring can be limited, and the sealing ring is not easy to move during the installation or removal process, thereby ensuring the sealing effect. Of course, in other embodiments, a stainless steel lining can also be installed on the inner side of the cover 21, and the use of the stainless steel lining can also solve the problem of corrosion and rust of the cover 21.

[0039] In this embodiment, a double-disc grinding device is further provided, including a machine body 11 and a grinding door 2 , wherein a machine cover 21 of the grinding door 2 is hinged to the rear end of the machine body 11 .

[0040] The implementation principle of this embodiment is as follows: the advance and retract knife module 3 is separately integrated, that is, the worm wheel 321, the worm 322 and the advance and retract knife screw 323 are integrated in the outer shell 31 as an independent whole, and the advance and retract knife module 3 is detachably installed on the outside of the machine cover 21 as a whole, which is more convenient for disassembly and replacement; in addition, a liner ring 211 is installed on the inner side of the machine cover 21, and a sealing installation groove 2111 is opened on the liner ring 211 for installing a sealing ring. The use of the sealing ring can avoid the internal medium from corroding the inner side of the machine cover 21 and other carbon steel parts, thereby greatly extending the service life of the entire equipment, making it more convenient for users to maintain and servicing, and reducing the investment in manpower and material costs.

[0041] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A grinding door, characterized in that: Used on a body (11) of a double-disc grinding device (1), the grinding door (2) comprises: A machine cover (21), wherein the machine cover (21) is detachably mounted on the machine body (11); A power unit (22), the power unit (22) being arranged on the machine cover (21) and comprising a power output end (221); Wherein, the machine cover (21) is also provided with a knife advance and retreat module (3), and the knife advance and retreat module (3) is integrally detachably mounted on the machine cover (21); The blade advance and retreat module (3) comprises an outer shell (31) and a blade advance and retreat structure (32) integrated in the outer shell (31); the outer shell (31) is detachably mounted on the outside of the machine cover (21); the input end of the blade advance and retreat structure (32) is detachably connected to the power output end (221); the output end of the blade advance and retreat structure (32) extends into the machine body (11) and is detachably connected to an external grinding disc (12) in the machine body (11).

2. The grinding door according to claim 1, characterized in that: The machine cover (21) is hinged to the machine body (11) via a hinge (4).

3. The grinding door according to claim 1 or 2, characterized in that: The power unit (22) comprises a feed reduction motor, and the output shaft of the feed reduction motor is the power output end (221); The power output end (221) of the knife-feeding reduction motor is detachably connected to the input end of the knife-feeding and retracting structure (32) via a coupling (5).

4. The grinding door according to claim 3, characterized in that: The knife advance and retreat structure (32) comprises a worm wheel (321), a worm (322) and a knife advance screw (323); The outer shell (31) is provided with a chamber (311) inside, the worm wheel (321), the worm (322) and the feed screw (323) are all arranged in the chamber (311), and the worm wheel (321) and the worm (322) are meshed and connected with each other, and the feed screw (323) is arranged in the middle of the worm wheel (321) and is connected together by a helical thread; One end of the worm (322) is the input end, and is detachably connected to the power output end (221) via a coupling (5); One end of the feed screw rod (323) is the output end, and is detachably connected to the outer grinding disc (12).

5. The grinding door according to claim 4, characterized in that: A base (312) is provided outside the outer shell (31), and the base (312) is detachably connected to the machine cover (21) via bolts.

6. The grinding door according to claim 5, characterized in that: The base (312) and the outer shell (31) are integrally formed.

7. The grinding door according to claim 4, characterized in that: A flange (313) is also provided on the outside of the outer shell (31), and the flange (313) is detachably connected to the power unit (22) by bolts; The flange (313) and the outer shell (31) are integrally formed.

8. The grinding door according to claim 1, characterized in that: A sealing ring is provided on the inner side surface of the machine cover (21), and the sealing ring is pressed tightly between the machine cover (21) and the machine body (11).

9. The grinding door according to claim 8, characterized in that: A liner ring (211) is provided on the inner side surface of the machine cover (21), a sealing installation groove (2111) is provided on the liner ring (211), and the sealing ring is installed in the sealing installation groove (2111).

10. A double disc grinding device, characterized in that: It comprises a machine body (11) and a grinding door (2) as claimed in any one of claims 1 to 9, wherein a cover (21) of the grinding door (2) is hinged on the machine body (11).

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