Surface cleaning construction for EPP particles
By designing a treatment tank and stirring mechanism, combined with a ventilation structure, the problem of cleaning additive powder on the surface of EPP particles was solved, the cleaning efficiency and product quality were improved, and the scrap rate was reduced.
Patent Information
- Application Number
- CN202422217774.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-11
AI Technical Summary
During the production process of foamed EPP particles, the surface of the particles is covered with additive powder and not cleaned, which affects the subsequent welding of the foamed particles, resulting in increased molding energy consumption, reduced product quality and high scrap rate.
A surface cleaning structure including a treatment tank and a stirring mechanism is designed. The stirring mechanism of the stirring spindle and stirring blades is combined with a ventilation structure to quickly disperse and remove dirt on the surface of EPP particles, thereby improving the particle rising rate and cleaning efficiency.
It achieves efficient cleaning of the EPP particle surface, reduces cleaning costs, improves product quality and reduces scrap rate.
Smart Images
Figure CN223337925U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of EPP particle processing, in particular to a surface cleaning structure for EPP particles. Background Art
[0002] In the production process of expanded EPP particles, namely expanded polypropylene particles, when the EPP particles come out of the reactor, their surface is covered with additive powder. If the surface is not cleaned, it will affect the subsequent welding of the expanded particles to a certain extent, causing a sharp increase in molding energy consumption, and even abnormal welding of the molded products. The surface appearance and mechanical properties of the final molded product will be affected, resulting in low product quality and a high scrap rate.
[0003] Therefore, in order to solve the above problems, a surface cleaning structure for EPP particles is needed to obtain qualified EPP particles with high surface cleanliness, improve product quality and reduce scrap rate. Utility Model Content
[0004] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a surface cleaning structure for EPP particles, which can obtain qualified EPP particles with high surface cleanliness, improve product quality and reduce scrap rate.
[0005] The surface cleaning structure for EPP particles of the utility model comprises a processing tank and a stirring mechanism, wherein a feed port is provided at the bottom of the processing tank and a discharge port is provided at the top of the processing tank;
[0006] The stirring mechanism includes a stirring shaft extending into the treatment tank and stirring blades arranged circumferentially of the stirring shaft, wherein the stirring shaft is driven to drive the stirring blades to rotate;
[0007] The stirring main shaft has a main air inlet channel, the stirring blade has a diversion channel, the main air inlet channel is connected to the air supply source, the diversion channel is connected to the main air inlet channel, and the diversion channel has an air outlet.
[0008] Furthermore, the feed port is opened in the middle of the bottom of the treatment tank, and the bottom of the treatment tank is concave downward to form a slag storage tank.
[0009] Furthermore, the slag storage tank is in a ring shape surrounding the feed inlet.
[0010] Furthermore, the stirring main shaft is located above the feed inlet, and the central axis of the stirring main shaft roughly coincides with the central axis of the feed inlet;
[0011] The stirring blades are composed of a plurality of pieces, and the plurality of stirring blades are staggered in the vertical direction.
[0012] Furthermore, a plurality of stirring blades uniformly distributed at the same height in the circumferential direction of the stirring main shaft constitute a stirring blade group, and the stirring blade group is a plurality of groups arranged in the height direction.
[0013] Furthermore, the stirring blades staggered in the vertical direction gradually increase in length from bottom to top.
[0014] Furthermore, the middle portion of the stirring blade in the length direction is concave downward.
[0015] Furthermore, the main air inlet channel is opened on the stirring main shaft in a vertical direction, the air outlet is opened on the head end of the stirring blade, and the diversion channel is opened on the stirring blade approximately perpendicular to the main air inlet channel;
[0016] The diversion channel is further provided with a dispersion hole with the gas outlet facing downward.
[0017] Furthermore, a guide plate is provided in the diversion channel, the guide plate is located outside the dispersion hole, and an air hole is provided on the guide plate.
[0018] Furthermore, the dispersion holes are inclined outward from top to bottom, and the guide plates are inclined outward from top to bottom.
[0019] The beneficial effects of the present invention are as follows: the surface cleaning structure for EPP particles disclosed by the present invention can quickly disperse the EPP particles entering the treatment tank through the provided stirring mechanism, and can disperse the EPP particles more quickly in combination with the ventilation structure, while also accelerating the efficiency of removing dirt attached to the surface of the EPP particles, and can improve the rising rate of the EPP particles in combination with the specially constructed stirring blades, with the characteristics of low energy and high efficiency, which can greatly save cleaning costs, and at the same time, the slag storage tank at the bottom of the treatment tank can accumulate more heavier particles, making the sediment removal efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0021] Figure 1 It is a structural diagram of the utility model;
[0022] Figure 2 This is a schematic diagram of the structure of point A of the present utility model;
[0023] Figure 3 This is a schematic diagram of the top view of the stirring shaft and stirring blades of the utility model. DETAILED DESCRIPTION
[0024] Figure 1This is a schematic structural diagram of the present invention. As shown in the figure, the surface cleaning structure for EPP particles in this embodiment includes a treatment tank 1 and a stirring mechanism. A feed inlet 2 is provided at the bottom of the treatment tank 1, and a discharge port 3 is provided at the top of the treatment tank 1. A cleaning medium is provided in the treatment tank 1. The cleaning medium is selected from any suitable cleaning medium in the prior art according to the composition of the EPP particle surface additive, and the density of the cleaning medium is greater than the density of the EPP particles so that the EPP particles can naturally float on the cleaning medium. The general cleaning medium is water, which will not be described in detail here.
[0025] The feed port 2 is opened in the middle of the bottom of the treatment tank 1, and the middle of the bottom is the center position of the bottom of the treatment tank 1 on the horizontal plane, which is convenient for feeding EPP particles into the treatment tank 1, and is conducive to the floating of EPP particles in the treatment tank 1, and is more conducive to the diffusion of EPP particles outward with the feed port 2 as the center; more specifically, the top of the feed port 2 is a trumpet mouth with a size gradually increasing from bottom to top, so as to increase the feeding rate, facilitate the diffusion of EPP particles in the treatment tank 1, and facilitate faster sedimentation of the additives attached to the surface of EPP, and the feed port 2 protrudes downward from the bottom of the treatment tank 1 to form a feeding assembly end of the treatment tank 1, and the feeding assembly end of the treatment tank 1 is connected to the EPP particle feeding channel, so that the EPP particles with additive powder on the surface are transported to the treatment tank 1 for cleaning;
[0026] The discharge port 3 is opened at the top of the side wall of the treatment tank 1, and the discharge port 3 protrudes outward from the side wall of the treatment tank 1 to form the discharge assembly end of the treatment tank 1. The discharge assembly end of the treatment tank 1 is connected to the feed port 2 of the next level treatment process, so that the EPP particles that have been cleaned this time are transported to the preset treatment process.
[0027] In this embodiment, the bottom of the treatment pool 1 is recessed to form a slag storage tank 4. The provision of the slag storage tank 4 can improve the capacity of sediment and is more conducive to one-time or periodic water cleaning. The slag storage tank 4 can be a number of partitioned blocks or a ring-shaped groove surrounding the feed port 2, etc., so as to be able to store sediment. The cleaning slag storage tank 4 can choose any underwater cleaning equipment in the prior art, which will not be repeated here. In this embodiment, the slag storage tank 4 is in a ring shape surrounding the feed port 2, which is conducive to slag storage and cleaning.
[0028] In this embodiment, the stirring mechanism includes a stirring shaft 5 extending into the treatment tank 1 and stirring blades 6 arranged circumferentially on the stirring shaft 5, and the stirring shaft 5 is driven to drive the stirring blades 6 to rotate; as shown in the figure, the stirring shaft 5 is installed in the treatment tank 1 through a frame, and the stirring shaft 5 is driven to rotate by any power equipment in the prior art and then drives the stirring blades 6 to rotate, so as to speed up the cleaning efficiency of the EPP particles in the treatment tank 1 and ensure the cleaning quality of the EPP particles. The forward and reverse motor drive can be set according to actual usage to improve the dispersion ability of the EPP particles, which will not be repeated here; the stirring shaft 5 is located directly above the feed port 2, and the central axis of the stirring shaft 5 roughly coincides with the central axis of the feed port 2; the meaning of the roughly coincidence is that construction errors or assembly errors are allowed on the basis of the coincidence, which will not be repeated here.
[0029] In this embodiment, the stirring blades 6 are composed of a plurality of pieces, and the plurality of stirring blades 6 are staggered in the vertical direction so that the EPP particles can be broken up, the aggregation and adhesion of the EPP particles can be reduced, the cleaning quality of the EPP particles can be improved, and the efficiency of removing dirt attached to the surface of the EPP particles can be accelerated; the plurality of stirring blades 6 arranged in a staggered manner can be in a spiral ascending structure, an orderly staggered ascending structure, or a disordered staggered ascending structure, etc., whichever meets the function of hindering the aggregation of EPP particles, which will not be repeated here.
[0030] In this embodiment, a plurality of stirring blades 6 uniformly distributed at the same height in the circumferential direction of the stirring main shaft 5 constitute a group of 6 stirring blades, and the 6 stirring blade groups are several groups arranged in the height direction, and the staggered angles of the two adjacent groups of 6 stirring blades in the height direction are consistent; more specifically, this scheme provides a total of three groups of 6 stirring blades arranged at equal intervals in the height direction of the stirring main shaft 5, and each group of 6 stirring blades includes three stirring blades 6 uniformly distributed in the circumferential direction of the stirring main shaft 5, and the staggered angles of the two adjacent groups of 6 stirring blades in the height direction are 40°. In this embodiment, the stirring blades in the 6 groups of stirring blades staggered in the vertical direction gradually increase in length from bottom to top; so as to form the following Figure 3 The structure shown in FIG. 5 is that a plurality of stirring blades 6 are evenly distributed around the stirring main shaft 5 , which is more conducive to the effective dispersion and cleaning of the EPP particles in the treatment tank 1 .
[0031] In this embodiment, the middle part of the stirring blade 6 in the length direction is recessed downward. The recess of this solution makes the stirring blade 6 arc-shaped, and the rising end of the arc faces outward. The outer end is the end radially away from the stirring main shaft 5, which has a guiding function for the EPP particles, so that the EPP particles will not be hindered from rising and diffusing outward and will not be gathered in the middle of the treatment tank 1, thereby improving the cleaning effectiveness of the EPP particles.
[0032] In this embodiment, the stirring main shaft 5 has a main air inlet channel 7, and the main air inlet channel 7 is opened in the stirring main shaft 5 in the vertical direction, and the central axis of the main air inlet channel coincides with the central axis of the stirring main shaft 5; the stirring blade 6 has a diversion channel 8, and the diversion channel 8 is opened on the stirring blade 6 along the extension direction of the stirring blade 6, the main air inlet channel 7 is connected to the air supply source, and the diversion channel 8 is connected to the main air inlet channel, and the diversion channel 8 has an air outlet 9, and the air outlet 9 is opened at the head end of the stirring blade 6, and the diversion channel 8 is opened on the stirring main shaft 5 approximately perpendicular to the main air inlet channel 7. The blade 6, the aforementioned approximate verticality means that on the basis of verticality, the specific shape of the stirring blade 6 is adjusted to suit, which will not be repeated here; the air supply source has the ability to make the gas have a certain pressure, so that the gas passes through the main air inlet channel 7 and the branch channel 8 and is discharged from the air outlet 9; the ventilation structure is set, which is more conducive to the dispersion of EPP particles, especially in conjunction with the rotation of the stirring mechanism, so that the blowing direction of the gas is continuously changed, which is conducive to dispersing the EPP particles and obtaining EPP particles with high cleanliness, and the blowing direction is upward, which can accelerate the lifting of the EPP particles and improve the cleaning efficiency.
[0033] In this embodiment, a dispersion hole 10 with a downward gas outlet direction is further provided in the diversion channel 8 to further enhance the dispersion ability of the EPP particles; a guide plate 11 is provided in the diversion channel 8, and the guide plate 11 is located on the outside of the dispersion hole 10. An air hole 12 is provided on the guide plate 11. The purpose of setting the guide plate 11 is to guide the gas to be discharged through the dispersion hole 10, and the air hole 12 is to allow the gas to still be discharged from the air outlet 9; the dispersion hole 10 is inclined outward from top to bottom, and the guide plate 11 is inclined outward from top to bottom; the design of the dispersion hole 10 and the guide plate 11 can enable the stirring blade 6 to have an air channel inclined outward from top to bottom, thereby enhancing the dispersion effect of the EPP particles and reducing the situation where the EPP particles gather at the bottom of the stirring main shaft 5, which is beneficial to improving the cleaning efficiency and dispersion efficiency of the EPP particles.
[0034] In this embodiment, each stirring blade 6 in a group of stirring blades 6 located at the bottom of the stirring main shaft 5 is provided with a corresponding diversion channel 8; this is more advantageous in stabilizing the air supply pressure to meet usage requirements.
[0035] This solution uses a stirring mechanism to quickly disperse the EPP particles entering the treatment tank 1, and combined with the ventilation structure, the EPP particles can be dispersed more quickly, while also accelerating the efficiency of removing dirt attached to the surface of the EPP particles. Combined with specially constructed stirring blades, the rising rate of the EPP particles is increased, and it has the characteristics of low energy and high efficiency, which can greatly save cleaning costs. At the same time, the slag storage tank 4 at the bottom of the treatment tank 1 can accumulate more heavier particles, making the sediment removal efficiency higher.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A surface cleaning structure for EPP particles, characterized in that: It includes a processing tank and a stirring mechanism, wherein a feed port is provided at the bottom of the processing tank and a discharge port is provided at the top of the processing tank; The stirring mechanism includes a stirring shaft extending into the treatment tank and stirring blades arranged circumferentially of the stirring shaft, wherein the stirring shaft is driven to drive the stirring blades to rotate; The stirring main shaft has a main air inlet channel, the stirring blade has a diversion channel, the main air inlet channel is connected to the air supply source, the diversion channel is connected to the main air inlet channel, and the diversion channel has an air outlet; The feed inlet is opened in the middle of the bottom of the treatment tank, and the bottom of the treatment tank is concave downward to form a slag storage tank; The stirring main shaft is located above the feed inlet, and the central axis of the stirring main shaft coincides with the central axis of the feed inlet; The stirring blades are composed of a plurality of pieces, and the plurality of stirring blades are staggered in the vertical direction.
2. The surface cleaning structure for EPP particles according to claim 1, characterized in that: The slag storage tank is in a ring shape surrounding the feed port.
3. The surface cleaning structure for EPP particles according to claim 1, characterized in that: A plurality of stirring blades uniformly distributed at the same height in the circumference of the stirring main shaft constitute a stirring blade group, and the stirring blade group is a plurality of groups arranged in the height direction.
4. The surface cleaning structure for EPP particles according to claim 1, characterized in that: The stirring blades staggered in the vertical direction have lengths that gradually increase from bottom to top.
5. The surface cleaning structure for EPP particles according to claim 1, characterized in that: The middle portion of the stirring blade in the length direction is concave downward.
6. The surface cleaning structure for EPP particles according to claim 1, characterized in that: The main air inlet channel is opened on the stirring main shaft in the vertical direction, the air outlet is opened on the head end of the stirring blade, and the diversion channel is opened on the stirring blade perpendicular to the main air inlet channel; The diversion channel is further provided with a dispersion hole with the gas outlet facing downward.
7. The surface cleaning structure for EPP particles according to claim 6, characterized in that: A guide plate is provided in the diversion channel, the guide plate is located outside the dispersion hole, and an air hole is provided on the guide plate.
8. The surface cleaning structure for EPP particles according to claim 7, characterized in that: The dispersion holes are inclined outward from top to bottom, and the guide plates are inclined outward from top to bottom.