Raw material mixing structure for preparing semi-conductive thermoplastic shielding material

Abstract

The utility model relates to the technical field of shielding material preparation devices, and discloses a raw material mixing structure for preparing a semi-conductive thermoplastic shielding material, which comprises a heating and stirring tank, a feeding pipe is arranged at the top end of the heating and stirring tank, a discharging pipe is arranged at the bottom end of one side of the heating and stirring tank, and a servo motor is mounted at the bottom end of the heating and stirring tank. And a rotating shaft is mounted at the top end of the servo motor. According to the utility model, the rotating shaft rotates to synchronously drive the scraping plate to rotate, so that the scraping plate scrapes raw materials attached to the inner wall of the heating and stirring tank, the shielding raw materials are transferred to the center of the heating and stirring tank along the scraping plate, local heating of the raw materials is reduced, and the scraping plate vibrates under the impact action between the scraping plate and the counterweight ball in the rotating process; and meanwhile, the resonance of the vibrating reed is utilized to further promote the falling of the raw materials, so that the adhesion of the raw materials on the inner wall of the heating and stirring tank is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding material preparation devices, in particular to a raw material mixing structure for preparing semi-conductive thermoplastic shielding materials. Background Art

[0002] The wire and cable industry is an important supporting industry for the two pillar industries of the national economy, electricity and communications. Semi-conductive thermoplastic shielding material is one of the necessary components of medium and high voltage cables. It is made of polyethylene as the base material and carbon black, etc., and is thermoplasticized after high-temperature mixing. Therefore, a raw material mixing device is required in its processing;

[0003] Since the raw materials need to be subjected to high temperature during the preparation of semi-conductive thermoplastic shielding materials, they are mainly prepared in a heatable stirring tank. Since the inner cavity of the stirring tank is heated, the raw materials are subjected to the centrifugal action of stirring, and part of the raw materials will adhere to the inner wall, which can easily cause severe local heating of the raw materials, thereby affecting the overall mixing and stirring effect. Therefore, there is room for improvement. Utility Model Content

[0004] The utility model aims to provide a raw material mixing structure for preparing semi-conductive thermoplastic shielding materials, so as to solve the problem that the existing raw material mixing structure for preparing semi-conductive thermoplastic shielding materials proposed in the above background technology is not easy to clean the wall-adhering raw materials.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a raw material mixing structure for preparing semi-conductive thermoplastic shielding material, comprising a heating stirring tank, a feeding pipe is arranged at the top of the heating stirring tank, a discharging pipe is arranged at the bottom of one side of the heating stirring tank, a servo motor is installed at the bottom of the heating stirring tank, and a rotating shaft is installed at the top of the servo motor, the top of the rotating shaft extends to the inside of the heating stirring tank, stirring blades are evenly installed on both sides of the rotating shaft, a fixing sleeve is arranged at the center sleeve outside the rotating shaft, and fixing sleeves are evenly installed on the outside of the fixing sleeve. A fixed rod and an end of the fixed rod away from the fixed sleeve are both provided with an assembly mechanism, and a scraper is welded on one side of the assembly mechanism, one side of the scraper is against the inner wall of the heating and stirring tank, and an impact mechanism is provided on the top of the scraper to promote self-vibration of the scraper during rotation, so as to shake off the raw materials attached to the scraper, and the impact mechanism includes a support plate installed on the inner wall of the heating and stirring tank above the scraper, and a swing rod is installed on the outer side of the bottom end of the support plate, a counterweight ball is installed on the bottom end of the swing rod, and an impact groove is opened on the top of the outer side of the scraper on the side of the counterweight ball.

[0006] Preferably, the top end of the swing rod is hinged to the bottom end of the support plate, so that the counterweight ball collides and swings with the impact groove.

[0007] Preferably, the width of the impact groove is greater than the diameter of the weighted ball, and the impact groove is arranged on the rotating windward side of the scraper.

[0008] Preferably, resonance grooves are evenly opened on one side of the scraper, and a connecting shaft is installed at the top end of the resonance groove. A vibration plate is sleeved on the outside of the connecting shaft, and the vibration plate forms a flip structure with the resonance groove through the cooperation of the connecting shaft.

[0009] Preferably, the cross section of the resonance groove is a right triangle, and the right-angled slope is the inner bottom surface of the resonance groove, and the resonance groove and the impact groove are on the same side.

[0010] Preferably, the assembly mechanism includes a connecting block welded to the side of the scraper away from the heating stirring tank, and a connecting groove is provided at the bottom end of the connecting block. The connecting block is sleeved on the outer end of the fixing rod through the matching connecting groove, and a positioning bolt is installed at the top end of the connecting groove, and a positioning hole is correspondingly provided at one end of the fixing rod below the positioning bolt, and the bottom end of the positioning bolt passes through the positioning hole and is sleeved with a locking nut.

[0011] Preferably, the connection block and the scraper are welded at an obtuse angle, and the inner width of the connection groove is matched with the width of the fixing rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The rotation of the rotating shaft synchronously drives the scraper to rotate, so that the scraper scrapes the raw materials attached to the inner wall of the heating and stirring tank, so that the shielding material raw materials are transferred along the scraper to the center of the heating and stirring tank, thereby reducing the local heating of the raw materials. In addition, the scraper is vibrated by the impact between the scraper and the counterweight ball during the rotation process to promote the falling of the shielding material raw materials. At the same time, the resonance effect of the vibration plate is used to make the vibration plate shake the shielding material raw materials on the scraper, thereby further promoting the falling of the raw materials and reducing the adhesion of the raw materials to the inner wall of the heating and stirring tank;

[0014] (2) The contact area between the connecting block and the fixing rod is increased through the connection groove, positioning bolt and positioning hole, thereby improving the stability of the connection between the two. The positioning bolt and the locking nut are used to achieve the limit fixation of the connecting block and the detachability of the connecting block, so as to facilitate the regular inspection and replacement of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the scraper distribution three-dimensional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the vibration plate distribution of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the assembly mechanism of the utility model.

[0020] Explanation of the reference numerals in the figure: 1. heating stirring tank; 2. feed pipe; 3. discharge pipe; 4. servo motor; 5. rotating shaft; 6. stirring blade; 7. fixing sleeve; 8. fixing rod; 9. assembly mechanism; 901. connecting block; 902. connecting groove; 903. positioning bolt; 904. positioning hole; 905. locking nut; 10. scraper; 11. impact mechanism; 1101. support plate; 1102. swing rod; 1103. counterweight ball; 1104. impact groove; 12. vibration plate; 13. resonance groove; 14. connecting shaft. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model provides an embodiment: a raw material mixing structure for preparing semi-conductive thermoplastic shielding material, comprising a heating stirring tank 1, a feeding pipe 2 is arranged at the top of the heating stirring tank 1, a discharging pipe 3 is arranged at the bottom of one side of the heating stirring tank 1, a servo motor 4 is installed at the bottom of the heating stirring tank 1, and a rotating shaft 5 is installed at the top of the servo motor 4, the top of the rotating shaft 5 extends to the inside of the heating stirring tank 1, stirring blades 6 are evenly installed on both sides of the rotating shaft 5, a fixing sleeve 7 is arranged at the center sleeve of the outside of the rotating shaft 5, and fixing rods 8 are evenly installed on the outside of the fixing sleeve 7, and an assembly mechanism 9 is arranged at the end of the fixing rod 8 away from the fixing sleeve 7;

[0023] The assembly mechanism 9 includes a connection block 901 welded to the side of the scraper 10 away from the heating and stirring tank 1, and a connection groove 902 is provided at the bottom end of the connection block 901. The connection block 901 is sleeved on the outer end of the fixing rod 8 through the matching connection groove 902. A positioning bolt 903 is installed at the top end of the connection groove 902, and a positioning hole 904 is correspondingly provided at one end of the fixing rod 8 below the positioning bolt 903. The bottom end of the positioning bolt 903 passes through the positioning hole 904 and is sleeved with a locking nut 905.

[0024] The connection block 901 and the scraper 10 are welded at an obtuse angle, and the inner width of the connection groove 902 matches the width of the fixing rod 8;

[0025] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, when in use, the connection block 901 is used to wrap one end of the fixing rod 8, thereby increasing the connection contact area between the scraper 10 and the fixing rod 8 and improving the stability of the assembly. The locking nut 905 and the positioning bolt 903 are used to fix the connection block 901 to prevent it from moving randomly during the rotation of the fixing rod 8, thereby ensuring the movement stability of the scraper 10.

[0026] A scraper 10 is welded to one side of the assembly mechanism 9;

[0027] A resonance groove 13 is evenly formed on one side of the scraper 10, and a connecting shaft 14 is installed at the top of the resonance groove 13. A vibration sheet 12 is sleeved on the outside of the connecting shaft 14. The vibration sheet 12 forms a flip structure with the resonance groove 13 through the cooperation of the connecting shaft 14.

[0028] The cross section of the resonance groove 13 is a right triangle, and the right angle slope is the inner bottom surface of the resonance groove 13, and the resonance groove 13 and the impact groove 1104 are on the same side;

[0029] Specifically, Figure 1 , Figure 3 As shown, when in use, the special structure of the vibration sheet 12 and the resonance groove 13 is utilized so that the vibration sheet 12 can resonate with the vibration of the scraper 10, thereby making the vibration sheet 12 move to shake the shielding material on the scraper 10 and promote its falling;

[0030] One side of the scraper 10 is against the inner wall of the heating and stirring tank 1, and an impact mechanism 11 is provided at the top of the scraper 10 to promote the self-vibration of the scraper 10 during the rotation process, so as to shake off the raw materials attached to the scraper 10, and the impact mechanism 11 includes a support plate 1101 installed on the inner wall of the heating and stirring tank 1 above the scraper 10, and a swing rod 1102 is installed on the outer side of the bottom end of the support plate 1101, and a weight ball 1103 is installed on the bottom end of the swing rod 1102, and an impact groove 1104 is opened at the top of the outer side of the scraper 10 on the side of the weight ball 1103;

[0031] The top end of the swing rod 1102 is hinged to the bottom end of the support plate 1101, so that the weighted ball 1103 and the impact groove 1104 collide and swing;

[0032] The width of the impact groove 1104 is greater than the diameter of the weight ball 1103, and the impact groove 1104 is arranged on the windward side of the scraper 10;

[0033] Specifically, Figure 1 , Figure 2 As shown, when in use, the swing rod 1102 is hinged so that after the counterweight ball 1103 touches the impact groove 1104, it can produce a certain flipping as the scraper 10 moves, and then swing under the gravity of the impact groove 1104, so as to utilize the swinging effect to promote the impact effect with the next scraper 10, so that the scraper 10 is hit and vibrates.

[0034] Working principle: When the utility model is used, the shielding material raw material is first introduced into the interior of the heating and stirring tank 1 through the feed pipe 2, the heating and stirring tank 1 is started to heat and the servo motor 4 is started synchronously to rotate the rotating shaft 5, so that the stirring blades 6 mix and stir the shielding material raw material;

[0035] Secondly, the stirring blade 6 synchronously drives the fixed sleeve 7 to rotate, so that the fixed rod 8 drives the scraper 10 to rotate, and the outer side of the scraper 10 scrapes the inner wall of the heating stirring tank 1, so that the shielding material attached to the inner wall is accumulated and falls along the scraper 10, and due to the movement of the scraper 10, the scraper 10 approaches and hits the counterweight ball 1103, so that the counterweight ball 1103 slides along the impact groove 1104, and drives the swing rod 1102 to flip, when the counterweight ball 1103 leaves the impact groove 1104, the counterweight ball 1103 swings due to gravity to hit the next scraper 10, and due to the impact, the scraper 10 vibrates, thereby promoting the shaking-off rate of the shielding material in front of the scraper 10, and the scraper 10 vibrates, driving the vibration plate 12 to resonate, so that it has a certain flipping effect inside the resonance groove 13, so that it shakes the shielding material attached to the scraper 10, thereby further promoting the falling rate of the shielding material;

[0036] Finally, screw the locking nut 905 downward out of the outside of the positioning bolt 903, lift the scraper 10 upward, move the connecting block 901 upward synchronously, and move the positioning bolt 903 out of the inside of the positioning hole 904 to achieve separate disassembly of the scraper 10, thereby facilitating its regular inspection and replacement.

[0037] In the description of the present invention, it should be noted that, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A raw material mixing structure for preparing a semi-conductive thermoplastic shielding material, comprising a heating stirring tank (1), a feeding pipe (2) being arranged at the top of the heating stirring tank (1), and a discharging pipe (3) being arranged at the bottom of one side of the heating stirring tank (1), characterized in that: A servo motor (4) is installed at the bottom end of the heating and stirring tank (1), and a rotating shaft (5) is installed at the top end of the servo motor (4). The top end of the rotating shaft (5) extends to the inside of the heating and stirring tank (1). Stirring blades (6) are evenly installed on both sides of the rotating shaft (5). A fixed sleeve (7) is provided at the center of the outside of the rotating shaft (5), and a fixed rod (8) is evenly installed on the outside of the fixed sleeve (7). An assembly mechanism (9) is provided at one end of the fixed rod (8) away from the fixed sleeve (7), and a scraper (10) is welded to one side of the assembly mechanism (9). One side of the scraper (10) is in contact with the heating and stirring tank (1). ), the top end of the scraper (10) is provided with an impact mechanism (11) to promote the self-vibration of the scraper (10) during the rotation process, so as to shake off the raw materials attached to the scraper (10), the impact mechanism (11) comprises a support plate (1101) installed on the inner wall of the heating and stirring tank (1) above the scraper (10), and a swing rod (1102) is installed on the outer side of the bottom end of the support plate (1101), a counterweight ball (1103) is installed on the bottom end of the swing rod (1102), and an impact groove (1104) is opened at the top end of the outer side of the scraper (10) on the side of the counterweight ball (1103).

2. The raw material mixed structure for preparing a semi-conductive thermoplastic shielding material according to claim 1, characterized in that: The top end of the swing rod (1102) is hinged to the bottom end of the support plate (1101), so that the weighted ball (1103) and the impact groove (1104) collide and swing.

3. The raw material mixed structure for preparing a semi-conductive thermoplastic shielding material according to claim 1, characterized in that: The width of the collision groove (1104) is greater than the diameter of the weighted ball (1103), and the collision groove (1104) is arranged on the windward side of the scraper (10).

4. The raw material mixed structure for preparing a semi-conductive thermoplastic shielding material according to claim 1, characterized in that: One side of the scraper (10) is evenly provided with a resonance groove (13), and a connecting shaft (14) is installed at the top end of the resonance groove (13). A vibration plate (12) is sleeved on the outside of the connecting shaft (14), and the vibration plate (12) forms a flip structure with the resonance groove (13) through the cooperation of the connecting shaft (14).

5. The raw material mixed structure for preparing a semi-conductive thermoplastic shielding material according to claim 4, characterized in that: The cross section of the resonance groove (13) is a right triangle, and the right-angled slope is the inner bottom surface of the resonance groove (13), and the resonance groove (13) and the impact groove (1104) are located on the same side.

6. The raw material mixed structure for preparing a semi-conductive thermoplastic shielding material according to claim 1, characterized in that: The assembly mechanism (9) comprises a connection block (901) welded to a side of the scraper (10) away from the heating and stirring tank (1), and a connection groove (902) is provided at the bottom end of the connection block (901). The connection block (901) is sleeved on the outer end of the fixing rod (8) through the matching sleeve of the connection groove (902). A positioning bolt (903) is installed at the top end of the connection groove (902), and a positioning hole (904) is correspondingly provided at one end of the fixing rod (8) below the positioning bolt (903). The bottom end of the positioning bolt (903) passes through the positioning hole (904) and is sleeved with a locking nut (905).

7. The raw material mixed structure for preparing a semi-conductive thermoplastic shielding material according to claim 6, characterized in that: The connection block (901) and the scraper (10) are welded at an obtuse angle, and the inner width of the connection groove (902) is matched with the width of the fixing rod (8).

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