Slurry feeding accelerating device of screening machine

Abstract

The utility model discloses a pulp feeding accelerating device of a screening machine, which belongs to the technical field of papermaking pulping equipment and comprises a shell, the shell comprises a pulp feeding area and a screening area, a screening drum is fixedly mounted at the position of the screening area in the shell, a transmission shaft is coaxially mounted in the shell, a rotor wing rotor is mounted on the transmission shaft, and the rotor wing rotor is coaxially mounted on the shell. A screening channel communicated with the slurry inlet area is arranged between the rotor wing rotor and the screening cylinder, a slurry inlet communicated with the slurry inlet area is formed in the shell, a conical impeller is fixedly installed on the transmission shaft, and the rotation diameter of the end, close to the rotor wing rotor, of the conical impeller is larger than that of the end, away from the rotor wing rotor, of the conical impeller. The conical impeller comprises a plurality of spiral blades in an annular array, and the ends of the spiral blades are close to the rotor wing rotor and extend to the position of the screening channel. The utility model solves the technical problem of low production efficiency caused by poor slurry flowability, and is widely applied to papermaking and pulping.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking pulping equipment, in particular to a pulp feeding acceleration device for a screening machine. Background Art

[0002] At present, in order to meet the requirements of their own processing technology, industries such as pulp and paper making and wood-based panel manufacturing usually need to use screening machinery to process the purchased waste paper, wood chips, bamboo chips and other raw materials into pulp, and then screen them, and then use suitable pulp for production. The existing pulp contains many impurities, especially the coarse residue after screening, which leads to poor pulp fluidity. When the fluid pump pumps the pulp, the fluid pump needs to have a large head and high rated power, which not only consumes a lot of energy, but also affects the production efficiency of the pulp.

[0003] Therefore, in the technical field of papermaking and pulping equipment, there is still a need for research and improvement on the pulp feeding acceleration device of the screening machine. This is also a research hotspot and focus in the current technical field of papermaking and pulping equipment, and it is also the starting point for the completion of the present utility model. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is: to provide a slurry feeding acceleration device for a screening machine to solve the technical problem of low production efficiency and high energy consumption caused by poor slurry fluidity.

[0005] To solve the above technical problems, the technical solution of the utility model is: a pulp feeding acceleration device for a screening machine, comprising a shell, the shell comprising a pulp feeding area and a screening area, a screen drum is fixedly installed at the screening area position in the shell, a transmission shaft is coaxially installed in the shell, a rotor is installed on the transmission shaft, a screening channel connected to the pulp feeding area is provided between the rotor rotor and the screen drum, a pulp inlet connected to the pulp feeding area is provided on the shell, a conical impeller is fixedly installed on the transmission shaft, a rotation diameter of the conical impeller close to one end of the rotor rotor is larger than the rotation diameter away from one end of the rotor rotor, the conical impeller comprises a plurality of spiral blades in an annular array, the end of the spiral blade is close to the rotor rotor and extends to the screening channel position.

[0006] As an improvement, the spiral blade has a pulp-throwing inclined surface inclined toward the screening channel.

[0007] As a further improvement, a jet water pipe connected to the slurry inlet area is provided on the shell, and the position of the jet water pipe corresponds to the position of the conical impeller.

[0008] As a further improvement, the jet direction of the jet water pipe is consistent with the pulp throwing direction of the spiral blade.

[0009] After adopting the above technical solution, the beneficial effects of the utility model are:

[0010] The conical impeller in the embodiment of the utility model can cause the slurry to generate vortexes, improve the fluidity of the slurry, and quickly pass through the screening channel into the screening area, thereby improving the slurry production efficiency. The conical impeller utilizes the power of the transmission shaft to promote the flow of slurry in the slurry inlet area, which can reduce the rated power of the fluid pump that pumps the slurry.

[0011] Since a jet water pipe connected to the slurry inlet area is provided on the shell, the jet water pipe provides jet water on the one hand to dilute the slurry, reduce the concentration of the slurry and improve the fluidity of the slurry; on the other hand, the jet direction of the jet water pipe is consistent with the slurry throwing direction of the spiral blade, so that the jet water assists the flow of the slurry, avoiding the jet water hindering the flow of the slurry and increasing the power consumption, thereby reducing the energy consumption of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0013] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of a conical impeller in an embodiment of the utility model;

[0016] Figure 3 yes Figure 2 A schematic diagram of a top view structure;

[0017] In the figure: 1, shell, 101, slurry inlet, 102, screening channel, 2, screen drum, 3, rotor, 4, transmission shaft, 5, conical impeller, 501, spiral blade, 502, slurry throwing slope, 6, jet water pipe. DETAILED DESCRIPTION

[0018] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The terms such as "front", "back", "left", "right", "inside", "outside", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of application of the present invention. Changes or adjustments to their relative relationships shall be regarded as within the scope of application of the present invention without substantially changing the technical content.

[0020] like Figure 1 As shown, the utility model provides a slurry feeding acceleration device for a screening machine, comprising a shell 1, the shell 1 comprising a slurry feeding area and a screening area, a screen drum 2 is fixedly installed at the screening area position in the shell 1, a transmission shaft 4 is coaxially installed in the shell 1, a rotor 3 is installed on the transmission shaft 4, a screening channel 102 connected to the slurry feeding area is provided between the rotor 3 and the screen drum 2, a slurry inlet 101 connected to the slurry feeding area is provided on the shell 1, the slurry entering direction of the slurry feeding inlet is along the tangential direction of the shell 1, so that the slurry forms a vortex to improve the fluidity of the slurry, a conical impeller 5 is fixedly installed on the transmission shaft 4, and the rotation diameter of the conical impeller 5 close to the rotor 3 is larger than the rotation diameter of the end away from the rotor 3, as shown in FIG. Figure 2 and Figure 3 As shown, the conical impeller 5 includes a plurality of spiral blades 501 in an annular array, the ends of the spiral blades 501 are close to the rotor 3 and extend to the screening channel 102, the spiral blades 501 have a slurry-sweeping slope 502 inclined toward the screening channel 102, the slurry-sweeping slope 502 is a slurry-facing surface, and its shape extends in a spiral. The conical impeller 5 with an overall conical structure can cause the slurry to generate vortexes, thereby improving the fluidity of the slurry, and quickly passing through the screening channel 102 into the screening area, thereby improving the slurry production efficiency. The conical impeller 5 utilizes the power of the transmission shaft 4 to promote the flow of slurry in the slurry inlet area, which can reduce the rated power of the fluid pump that pumps the slurry.

[0021] A jet water pipe 6 connected to the slurry inlet area is provided on the shell 1. The position of the jet water pipe 6 corresponds to the position of the conical impeller 5. It can provide jet water to dilute the slurry, reduce the concentration of the slurry, and improve the fluidity of the slurry. The jet direction of the jet water pipe 6 is consistent with the slurry throwing direction of the spiral blade 501, so that the jet water helps the flow of the slurry, avoids the jet water hindering the flow of the slurry and increasing the power consumption, thereby reducing the energy consumption of the equipment.

[0022] In the embodiment of the utility model, the slurry is pumped into the slurry inlet 101 from the slurry inlet area by a fluid pump, and at the same time, the jet water pipe 6 injects dilution water to reduce the slurry concentration and improve the slurry fluidity. At this time, the transmission shaft 4 drives the conical impeller 5 to rotate, so that the slurry generates vortex and pushes the slurry to quickly pass through the screening channel 102 into the screening area, thereby improving the pulping efficiency and reducing the energy consumption of the equipment.

[0023] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A pulp feeding acceleration device for a screening machine, comprising a shell, the shell comprising a pulp feeding area and a screening area, a screen drum is fixedly installed at the screening area in the shell, a transmission shaft is coaxially installed in the shell, a rotor is installed on the transmission shaft, a screening channel connected to the pulp feeding area is provided between the rotor and the screen drum, a pulp inlet connected to the pulp feeding area is provided on the shell, and the characteristics are: A conical impeller is fixedly mounted on the transmission shaft, wherein the rotation diameter of the conical impeller at one end close to the rotor is larger than the rotation diameter at one end away from the rotor, and the conical impeller comprises a plurality of spiral blades in an annular array, wherein the ends of the spiral blades are close to the rotor and extend to the screening channel position.

2. The pulp feeding acceleration device for a screening machine according to claim 1, characterized in that: The spiral blade has a pulp throwing slope inclined toward the screening channel.

3. The pulp feeding acceleration device for a screening machine according to claim 2, characterized in that: The shell is provided with a jet water pipe connected to the slurry inlet area, and the position of the jet water pipe corresponds to the position of the conical impeller.

4. The pulp feeding acceleration device for a screening machine according to claim 3 is characterized in that: The jet direction of the jet water pipe is consistent with the slurry throwing direction of the spiral blade.

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