Paper pulp grinding machine

Abstract

The utility model discloses a paper pulp refiner, which relates to the technical field of paper pulp preparation and comprises a refiner body, the refiner body is composed of a grinding box, a channel pipe, a storage box and a discharge pipe, and the grinding box is communicated with the storage box through the channel pipe. When the grinding roller is located at the highest position, the distance between the grinding roller and the cavity of the grinding box is the largest, paper pulp is coarsely ground firstly, the coarsely ground paper pulp falls into the storage box and is pumped back into the grinding box through the circulating pump to be continuously ground, and after the paper pulp is coarsely ground completely, the height of the grinding roller is lowered, so that the grinding efficiency is improved. When the grinding roller is located at the lowest position, paper pulp subjected to coarse grinding is subjected to fine grinding through the grinding roller, qualified paper pulp after fine grinding flows out through the through hole and the discharging pipe, large paper pulp continues to be ground circularly, the problem that a traditional pulping machine is uneven in grinding is solved, repeated inspection and repeated pouring into the pulping machine for re-grinding are not needed, and the pulping efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp preparation, in particular to a pulp refiner. Background Art

[0002] Pulp refers to the fibrous material obtained by processing plant fibers. According to different processing methods and raw materials, there are many types of pulp, such as mechanical pulp, chemical pulp, chemical mechanical pulp, etc. Pulp is often used to make paper and paperboard, and is also used in the fields of artificial fibers, plastics, coatings, films, gunpowder, etc. Pulp needs to go through many procedures during the production and processing. Among them, pulp grinding (or grinding) is one of the processes. It usually uses a pulp grinder to refine the fibers in the pulp to make it more uniform and fine. This helps to improve the smoothness and uniformity of the paper and improve the performance of the paper.

[0003] In the process of grinding pulp in the existing pulp preparation refiner, when a large amount of pulp is being refined, uneven grinding is likely to occur. A part of the pulp cannot become more uniform and fine, thus affecting the effect of pulp grinding. After the pulp is taken out for inspection, it needs to be ground a second or third time. This method is time-consuming and labor-intensive, and affects the grinding efficiency. Utility Model Content

[0004] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a pulp refiner, which includes a refiner body, the refiner body is composed of a grinding box, a channel pipe, a storage box and a discharge pipe, the grinding box and the storage box are connected through the channel pipe, the lower end of the storage box is fixedly connected to the discharge pipe, the upper eccentric part of the grinding box is fixedly connected to the feed pipe, the grinding box is installed with a grinding accuracy adjustment structure, and the outside of the refiner body is installed with a pulp circulation mechanism;

[0005] The grinding precision adjustment structure comprises a connecting plate, a motor, a pair of electric push rods, a pair of guide rods, a rectangular rod, a pair of arc-shaped sliding rods, a sleeve and a grinding roller;

[0006] The grinding box has an inverted frustum-shaped inner cavity, the motor is placed on the upper side of the grinding box, the output end of the motor passes through the grinding box and is fixedly connected to the rectangular rod one, the lower end of the rectangular rod is slidably placed in the sleeve one, the lower end of the sleeve is fixedly connected to the grinding roller, an annular groove is provided on the upper side of the grinding roller, a pair of arc-shaped sliding rods are slidably placed in the annular groove, the upper sides of a pair of arc-shaped sliding rods are respectively fixedly connected to corresponding guide rods, the upper ends of a pair of guide rods pass through the grinding box and are fixedly connected to the connecting plate, the lower side of the connecting plate is fixedly connected to the output ends of the symmetrical electric push rods, and a pair of electric push rods are placed on the upper side of the grinding box.

[0007] The utility model is further configured as follows: the pulp circulation mechanism comprises a connecting pipe 1, a support plate, a circulation pump and a connecting pipe 2;

[0008] A group of evenly arranged filter holes are provided at the bottom of the material storage box, one side of the material storage box is fixedly connected to the support plate, the circulation pump is placed on the upper side of the support plate, one end of the connecting pipe is fixedly connected to the lower part of one side of the material storage box, the upper end of the connecting pipe is fixedly connected to the liquid inlet end of the circulation pump, the liquid outlet end of the circulation pump is fixedly connected to the connecting pipe 2, and the upper end of the connecting pipe 2 is fixedly connected to the upper part of one side of the grinding box.

[0009] The utility model is further configured as follows: the lower end of the grinding roller is fixedly connected to sleeve 2, the upper end of rectangular rod 2 is slidably arranged in sleeve 2, the lower end bearing of rectangular rod 2 is connected to the bottom of the material storage box, and the lower part of rectangular rod 2 is fixedly connected to a group of evenly arranged arc scrapers.

[0010] The utility model is further configured as follows: the grinding roller is an inverted truncated cone roller, the outer side of the grinding roller is parallel to the inner cavity of the grinding box, and the upper side of the grinding roller is an oblate truncated cone to prevent pulp from remaining on the upper side of the grinding roller.

[0011] The utility model is further configured as follows: the second upper end of the connecting pipe is higher than the upper side of the grinding roller.

[0012] The utility model is further configured as follows: the discharge pipe is an inverted frustum-shaped discharge pipe.

[0013] The utility model is further configured as follows: a pair of electric push rods are co-position controlled.

[0014] The utility model is further configured as follows: the motor is located below the connecting plate.

[0015] The beneficial technical effect of the utility model is as follows: when the grinding roller of the utility model is in the highest position, the distance between the grinding roller and the cavity of the grinding box is the largest, the pulp is coarsely ground first, and large pieces of pulp are coarsely ground into small pieces. The coarsely ground pulp falls into the storage box. Since the fibrous matter in the pulp is large and cannot flow out from the through hole, the coarsely ground pulp is pumped back to the grinding box for further grinding through a circulation pump. When all the pulp is coarsely ground, the height of the grinding roller is lowered. When the grinding roller is in the lowest position, the distance between the grinding roller and the cavity of the grinding box is the smallest. The coarsely ground pulp is finely ground by the grinding roller into small pieces. After fine grinding, qualified pulp flows out through the through hole and the discharge pipe, and larger pieces of pulp continue to be circulated and ground, thereby improving the problem of uneven grinding of traditional pulping machines. There is no need to inspect and pour the pulp into the pulping machine for regrinding many times, thereby improving the pulping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The main view of the utility model is shown Figure 1 .

[0017] Figure 2 The main view of the utility model is shown Figure 2 .

[0018] Figure 3 A top view of the present invention is shown.

[0019] Figure numerals 1, connecting plate, 2, motor, 3, electric push rod, 4, guide rod, 5, grinding box, 6, grinding roller, 7, circulation pump, 8, channel pipe, 9, storage box, 10, discharge pipe, 11, arc scraper, 12, rectangular rod 2, 13, sleeve 2, 14, sleeve 1, 15, arc slide rod, 16, rectangular rod 1. DETAILED DESCRIPTION

[0020] Please refer to the attached Figure 1-Figure 3 Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0021] The utility model provides a pulp refiner. Before use, the output ends of a pair of electric push rods 3 are in an extended state, the grinding roller 6 is in the highest position, and the distance between the grinding roller 6 and the inner cavity of the grinding box 5 is in the largest position. Figure 1As shown, when using the device, start the motor 2 and the circulation pump 7, the motor 2 drives the grinding roller 5 to rotate through the rectangular rod 16 and the sleeve 14, the grinding roller 5 rotates along a pair of arc-shaped slide bars 15 through the annular slide groove, the grinding roller 5 drives a group of arc-shaped scrapers 11 to rotate along the bottom of the storage box 9 through the sleeve 2 13 and the rectangular rod 2 12, and the pulp is poured into the grinding box 5 at a uniform speed through the feed pipe to avoid a large amount of pulp pouring in and causing the pulp to accumulate above the grinding roller 6 (the amount of pulp pumped in at one time does not exceed the volume of the storage box 9), the grinding roller 6 rotates to coarsely grind the pulp, and the larger pieces of fibrous materials in the pulp are coarsely ground, and the coarsely ground pulp falls into the storage box 9. Since the fibrous materials in the pulp are large, they cannot flow out from the through hole, and the pulp is poured into the grinding box 5 through the cooperation between the connecting pipe 1, the circulation pump 7 and the connecting pipe 2. The coarsely ground pulp is pumped back to the grinding box 5 through the connecting pipe 2 for further grinding. A group of arc scrapers 11 continuously stir the pulp to prevent the pulp from clogging the through hole while assisting the connecting pipe 1 to absorb the pulp. The pulp is coarsely ground several times in a cycle to ensure that all the pulp is coarsely ground. Then, a pair of electric push rods 3 are started. The output ends of the pair of electric push rods 3 retract to drive the connecting plate 1 to slide downward. The connecting plate 1 drives the pair of guide rods 4 to slide downward. The pair of guide rods 4 drives the grinding roller 6 to slide downward through a pair of arc sliding bars 15. When the output ends of the pair of electric push rods 3 are fully retracted, the pair of electric push rods 3 are closed. At this time, the distance between the grinding roller 6 and the inner cavity of the grinding box 5 is the smallest. The grinding roller 6 drives the sleeve 14 to slide downward along the rectangular rod 16. The grinding roller 6 drives the sleeve 2 13 to slide downward along the rectangular rod 2 12. At this time, it is in the fine grinding state, as shown in FIG. Figure 2 As shown, the coarsely ground fibrous material pumped into the grinding box 5 is finely ground, and the pulp is finely ground several times in a cycle. When there is no coarsely ground pulp in the storage box 9, the qualified refined pulp flows out through the through hole of the storage box 9, and the unqualified pulp continues to be pumped into the grinding box 5 for grinding, until all the pulp passes through the through hole and flows out along the discharge pipe 10, and then the motor 2 and the circulation pump 7 are turned off, thereby improving the problem of uneven grinding in the traditional pulping machine. By replacing the traditional one-time grinding with cyclic repeated grinding, the problem of part of the pulp not being ground properly when grinding a large amount of pulp is avoided, and there is no need to check and pour the pulp into the pulping machine for re-grinding many times, thereby improving the grinding efficiency.

[0022] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0023] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0026] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pulp refiner, comprising a refiner body, characterized in that: The pulping machine body is composed of a grinding box (5), a channel pipe (8), a material storage box (9) and a discharge pipe (10); the grinding box (5) and the material storage box (9) are connected through the channel pipe (8); the lower end of the material storage box (9) is fixedly connected to the discharge pipe (10); the upper eccentric part of the grinding box (5) is fixedly connected to the feed pipe; a grinding precision adjustment structure is installed on the grinding box (5); and a pulp circulation mechanism is installed outside the pulping machine body; The grinding precision adjustment structure comprises a connecting plate (1), a motor (2), a pair of electric push rods (3), a pair of guide rods (4), a rectangular rod (16), a pair of arc-shaped sliding rods (15), a sleeve (14) and a grinding roller (6); The grinding box (5) has an inverted truncated cone-shaped inner cavity. The motor (2) is arranged on the upper side of the grinding box (5). The output end of the motor (2) passes through the grinding box (5) and is fixedly connected to the rectangular rod (16). The lower end of the rectangular rod (16) is slidably arranged in the sleeve (14). The lower end of the sleeve (14) is fixedly connected to the grinding roller (6). An annular groove is provided on the upper side of the grinding roller (6). A pair of arc-shaped sliding rods (15) are slidably arranged in the annular groove. The upper sides of the pair of arc-shaped sliding rods (15) are respectively fixedly connected to the corresponding guide rods (4). The upper ends of the pair of guide rods (4) pass through the grinding box (5) and are fixedly connected to the connecting plate (1). The lower side of the connecting plate (1) is fixedly connected to the output ends of the symmetrical electric push rods (3). The pair of electric push rods (3) are arranged on the upper side of the grinding box (5).

2. A pulp refiner according to claim 1, characterized in that: The pulp circulation mechanism comprises a connecting pipe 1, a support plate, a circulation pump (7) and a connecting pipe 2; A group of evenly arranged filter holes are provided at the bottom of the material storage box (9); one side of the material storage box (9) is fixedly connected to the support plate; the circulation pump (7) is arranged on the upper side of the support plate; one end of the connecting pipe is fixedly connected to the lower part of one side of the material storage box (9); the upper end of the connecting pipe is fixedly connected to the liquid inlet end of the circulation pump (7); the liquid outlet end of the circulation pump (7) is fixedly connected to the connecting pipe 2; and the upper end of the connecting pipe 2 is fixedly connected to the upper part of one side of the grinding box (5).

3. A pulp refiner according to claim 2, characterized in that: The lower end of the grinding roller (6) is fixedly connected to the second sleeve (13), the upper end of the second rectangular rod (12) is slidably arranged in the second sleeve (13), the lower end of the second rectangular rod (12) is bearing-connected to the bottom of the material storage box (9), and the lower part of the second rectangular rod (12) is fixedly connected to a group of evenly arranged arc-shaped scrapers (11).

4. A pulp refiner according to claim 1, characterized in that: The grinding roller (6) is an inverted truncated cone-shaped roller, the outer side of the grinding roller (6) is in parallel with the inner cavity of the grinding box (5), and the upper side of the grinding roller (6) is an oblate truncated cone-shaped roller.

5. A pulp refiner according to claim 2, characterized in that: The upper end of the second connecting pipe is higher than the upper side of the grinding roller (6).

6. A pulp refiner according to claim 1, characterized in that: The discharge pipe (10) is an inverted truncated cone-shaped discharge pipe.

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