Papermaking additive automatic adding system

Abstract

The utility model discloses an automatic papermaking additive adding system which comprises a mixing tank, a self-weighing additive storage tank is arranged on the outer side of the mixing tank, a second gate valve is arranged at a discharge port of the self-weighing additive storage tank, a first gate valve is arranged at an outlet of the mixing tank, and the outlet of the mixing tank is connected with a high-level box of a papermaking machine through a pipeline. The outer edge of the upper surface of the mixing tank is provided with a group of annularly-distributed feeding ports, the feeding ports are connected with conveying pipes of the corresponding self-weighing type auxiliary storage tanks, the side face of the upper portion of the mixing tank is further provided with a water inlet, the water inlet is connected with a water inlet pipe and a metering pump, and the middle of the upper end of the mixing tank is provided with a lifting type stirring driving mechanism. A stirring mechanism positioned in the mixing tank is arranged at the output end of the lifting type stirring driving mechanism; the main control board is respectively connected with the first gate valve, the second gate valve, the metering pump and the lifting type stirring driving mechanism. The utility model has the characteristics that the connecting structure can be simplified and the occupied space can be reduced.

Description

Technical Field

[0001] The utility model relates to a papermaking aid adding device, in particular to an automatic papermaking aid adding system. Background Art

[0002] In papermaking production, there are at most 5 kinds of papermaking aids to be added. The existing adding method is that the discharge port of each aid tank is connected with a papermaking aid adding pipe, and a papermaking aid pump is installed on the papermaking aid adding pipe. The other end of the papermaking aid adding pipe directly leads into the mixing pipe. Driven by the papermaking aid pump, the papermaking aid is added into the mixing pipe of the high-position box of the papermaking machine. The overall connection structure is relatively complex. Moreover, before the papermaking aid is added to the pulp, the aid needs to be mixed with dilution water in a certain proportion and then stored for use. In this way, multiple storage containers with a large capacity are required for storage, occupying a relatively large site space. Therefore, the existing technology has the problems of complex connection structure and large site space occupation. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an automatic papermaking aid adding system. The utility model has the characteristics of being able to simplify the connection structure and reduce the space occupation.

[0004] The technical solution of the utility model: an automatic papermaking aid adding system includes a mixing tank. A plurality of self-weighing papermaking aid storage tanks are annularly distributed outside the mixing tank. A second gate valve is arranged at the discharge port of the self-weighing papermaking aid storage tank. The discharge port of each self-weighing papermaking aid storage tank is connected with the mixing tank through a feeding pipe. A first gate valve is arranged at the outlet of the mixing tank. The outlet of the mixing tank is connected with the high-position box of the papermaking machine through a pipeline. An annularly distributed group of feeding ports is arranged on the outer edge of the upper surface of the mixing tank. The feeding ports are connected with the feeding pipes of the corresponding self-weighing papermaking aid storage tanks. A water inlet is also arranged on the side surface of the upper part of the mixing tank. The water inlet is connected with a water inlet pipe and a metering pump. A lifting type stirring driving mechanism is arranged in the middle of the upper end of the mixing tank. A stirring mechanism located in the mixing tank is arranged at the output end of the lifting type stirring driving mechanism. It also includes a main control board, and the main control board is respectively connected with the first gate valve, the second gate valve, the metering pump and the lifting type stirring driving mechanism.

[0005] In the above-mentioned automatic papermaking aid adding system, a liquid level gauge is also arranged in the mixing tank.

[0006] In the above-mentioned automatic papermaking aid adding system, the self-weighing papermaking aid storage tank is located above the mixing tank. Mounting brackets are also arranged at both ends of the self-weighing papermaking aid storage tank. A gravity sensor is arranged between the bottom of the mounting bracket and the mounting ground. The gravity sensor is connected with the main control board.

[0007] In the aforementioned automatic papermaking aid adding system, the lifting stirring drive mechanism includes two electric lifting rods fixedly arranged in parallel at the top of the mixing tank. A base is provided at the upper end of the electric lifting rod, a drive motor is provided above the base, and an output shaft is provided below the drive motor.

[0008] In the aforementioned automatic papermaking aid adding system, the stirring mechanism includes an upper vertical stirring shaft, an S-shaped stirring shaft, and a lower vertical stirring shaft connected to the output shaft. Upper conical stirring paddles are provided on the upper vertical stirring shaft, and lower conical stirring paddles are provided at the bottom of the lower vertical stirring shaft, and the upper conical stirring paddles and the lower conical stirring paddles are symmetrically distributed.

[0009] In the aforementioned automatic papermaking aid adding system, an annular guide plate which corresponds to the position of the feed inlet and is inclined downward is provided at the upper part of the inner wall of the mixing tank.

[0010] Compared with the prior art, the utility model is composed of a plurality of self-weighted aid storage tanks and a mixing tank. After the aids are diluted and mixed in the mixing tank, they are sent into the high-level tank, which not only simplifies the connection structure with the high-level tank, but also can effectively reduce the volume of each aid storage tank and reduce the occupation of site space. Moreover, through the mutual cooperation among the self-weighted aid storage tanks, the second gate valve, the first gate valve below the mixing tank, the metering pump, and the main control board, the present application realizes the control of the addition of aids, and can effectively improve the feeding accuracy. At the same time, the present application also arranges a lifting stirring drive mechanism and a stirring mechanism in the mixing tank, so as to effectively improve the efficiency and quality of mixing and stirring. In summary, the utility model has the characteristics of being able to simplify the connection structure and reduce the space occupation. Description of the Drawings

[0011] Figure 1 is a structural schematic diagram of the utility model.

[0012] The reference signs in the drawings are: 3 - mixing tank, 1 - self-weighted aid storage tank, 2 - second gate valve, 4 - first gate valve, 5 - feed inlet, 6 - water inlet, 7 - water inlet pipe, 8 - metering pump, 9 - lifting stirring drive mechanism, 10 - stirring mechanism, 11 - gravity sensor, 12 - annular guide plate, 13 - mounting bracket, 901 - electric lifting rod, 902 - base, 903 - drive motor, 904 - output shaft, 101 - upper vertical stirring, 102 - S-shaped stirring shaft, 103 - lower vertical stirring shaft, 104 - upper conical stirring paddle, 105 - lower conical stirring paddle. Detailed Embodiments

[0013] The following further describes the utility model in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the utility model.

[0014] Embodiment. An automatic papermaking aid adding system is composed as Figure 1As shown in the figure, it includes a mixing tank 3. Multiple self - weighing additive storage tanks 1 are annularly distributed outside the mixing tank 3. A second gate valve 2 is provided at the discharge port of the self - weighing additive storage tank 1. The discharge port of each self - weighing additive storage tank 1 is connected to the mixing tank 3 through a feeding pipe. A first gate valve 4 is provided at the outlet of the mixing tank 3. The outlet of the mixing tank 3 is connected to the high - level tank of the paper machine through a pipeline; an annular set of feeding ports 5 is provided along the outer edge of the upper surface of the mixing tank 3. The feeding ports 5 are connected to the feeding pipes of the corresponding self - weighing additive storage tanks 1. A water inlet 6 is also provided on the side of the upper part of the mixing tank 3. The water inlet 6 is connected to a water inlet pipe 7 and a metering pump 8. A lifting type stirring drive mechanism 9 is provided in the middle of the upper end of the mixing tank 3. A stirring mechanism 10 located inside the mixing tank 3 is provided at the output end of the lifting type stirring drive mechanism 9; it also includes a main control board, which is respectively connected to the first gate valve 4, the second gate valve 2, the metering pump 8 and the lifting type stirring drive mechanism 9.

[0015] A liquid level gauge is also provided inside the mixing tank 3.

[0016] The self - weighing additive storage tank 1 is located above the mixing tank 3. Installation brackets 13 are provided at both ends of the self - weighing additive storage tank 1. A gravity sensor 11 is provided between the bottom of the installation bracket 13 and the installation ground. The gravity sensor 11 is connected to the main control board.

[0017] The lifting type stirring drive mechanism 9 includes two parallel electric lifting rods 901 fixedly installed at the top of the mixing tank 3. A base 902 is provided at the upper end of the electric lifting rod 901. A driving motor 903 is provided above the base 902. An output shaft 904 is provided below the driving motor 903. By setting the electric lifting rods, the liquid in the upper and lower areas of the mixing tank can be fully stirred to ensure the mixing uniformity.

[0018] The stirring mechanism 10 includes an upper vertical stirring shaft 101, an S - shaped stirring shaft 102 and a lower vertical stirring shaft 103 connected to the output shaft 904. Upper conical stirring paddles 104 are provided on the upper vertical stirring shaft 101. Lower conical stirring paddles 105 are provided at the bottom of the lower vertical stirring shaft 103, and the upper conical stirring paddles 104 and the lower conical stirring paddles 105 are symmetrically distributed. By setting the upper conical stirring paddles and the lower conical stirring paddles, the full mixing of the liquid in the upper and lower areas can be effectively improved, the stirring speed can be increased, and the uniformity can be ensured; by the S - shaped stirring paddle, the stirring area can be further enlarged, the stirring dead angle can be reduced, and the stirring uniformity can be improved.

[0019] An annular guide plate 12 which is inclined downward and corresponds to the position of the feeding port 5 is provided at the upper part of the inner wall of the mixing tank 3. It can make the additive feeding concentrated in the middle to ensure full mixing with the dilution water.

[0020] A set of water inlets is provided on the side of the mixing tank, preferably 4 in an annular distribution. And the water inlets are located above the annular guiding plate. It can be pre - contacted with the additives first to improve the subsequent mixing uniformity and mixing speed.

[0021] A wireless transmission module is provided on the main control board and is connected to the remote control center.

[0022] The bottom surface of the mounting bracket is mounted on the ground.

[0023] The adding process of the present utility model: When additives need to be added, the remote control center will send a control signal to the main control board. The main control board controls the opening of the second gate valve of the self - weighing additive storage tank for the corresponding additive. When the gravity sensor monitors the corresponding weight output, it controls the second gate valve to close. After the corresponding weight of the additive is transported into the mixing tank, the water inlet pipe transports the corresponding dilution water into the mixing tank (the amount of dilution water is controlled by a metering pump). Then, the lifting type stirring drive mechanism drives the stirring mechanism to rotate for stirring. After stirring and mixing evenly, the first gate valve is opened to transport the diluted additive into the slurry mixing pipe in the high - level tank of the paper machine.

[0024] The working process of the lifting type stirring drive mechanism: The electric lifting rod drives the base and the drive motor to move up and down. When moving up and down, the drive motor also works to drive the output shaft to rotate. The rotation of the output shaft drives the upper vertical stirring shaft, the S - shaped stirring shaft, the lower vertical stirring shaft, and the upper and lower conical stirring paddles to rotate, so as to quickly and efficiently complete the stirring and mixing of the additives in the mixing tank.

Claims

1. An automatic adding system for papermaking additives, characterized in that: It includes a mixing tank (3). Outside the mixing tank (3), there are multiple self - weighing auxiliary agent storage tanks (1) distributed in a ring shape. A second gate valve (2) is provided at the discharge port of the self - weighing auxiliary agent storage tank (1). The discharge port of each self - weighing auxiliary agent storage tank (1) is connected to the mixing tank (3) through a feeding pipe. A first gate valve (4) is provided at the outlet of the mixing tank (3). The outlet of the mixing tank (3) is connected to the high - level tank of the paper machine through a pipeline. Along the outer edge of the upper surface of the mixing tank (3), there is a set of feeding ports (5) distributed in a ring shape. The feeding ports (5) are connected to the feeding pipes of the corresponding self - weighing auxiliary agent storage tanks (1). On the side of the upper part of the mixing tank (3), there is also a water inlet (6). The water inlet (6) is connected to a water inlet pipe (7) and a metering pump (8). In the middle of the upper end of the mixing tank (3), there is a lifting type stirring drive mechanism (9). At the output end of the lifting type stirring drive mechanism (9), there is a stirring mechanism (10) located inside the mixing tank (3). It also includes a main control board, and the main control board is respectively connected to the first gate valve (4), the second gate valve (2), the metering pump (8), and the lifting type stirring drive mechanism (9).

2. The automatic adding system for papermaking aids according to claim 1, characterized in that: A liquid level gauge is also provided inside the mixing tank (3).

3. The automatic addition system of papermaking aids according to claim 1, wherein: The self - weighing auxiliary agent storage tank (1) is located above the mixing tank (3). Installation brackets (13) are provided at both ends of the self - weighing auxiliary agent storage tank (1). A gravity sensor (11) is provided between the bottom of the installation bracket (13) and the installation ground, and the gravity sensor (11) is connected to the main control board.

4. An automatic papermaking aid adding system according to claim 1, characterized in that: The lifting type stirring drive mechanism (9) includes two electric lifting rods (901) fixedly arranged in parallel at the top of the mixing tank (3). A base (902) is provided at the upper end of the electric lifting rod (901). Above the base (902), there is a driving motor (903), and a output shaft (904) is provided below the driving motor (903).

5. An automatic papermaking aid adding system according to claim 4, characterized in that: The stirring mechanism (10) includes an upper vertical stirring shaft (101), an S - shaped stirring shaft (102), and a lower vertical stirring shaft (103) connected to the output shaft (904). Upper conical stirring paddles (104) are provided on the upper vertical stirring shaft (101), and lower conical stirring paddles (105) are provided at the bottom of the lower vertical stirring shaft (103), and the upper conical stirring paddles (104) and the lower conical stirring paddles (105) are symmetrically distributed.

6. The automatic adding system of papermaking aids according to claim 1, wherein: An annular guide plate (12) which is inclined downward and corresponds to the position of the feeding port (5) is provided at the upper part of the inner wall of the mixing tank (3).

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