Raw material mixing device for preparing dry-type transformer resin castable

Abstract

The utility model relates to the technical field of raw material mixing, in particular to a raw material mixing device for preparing dry-type transformer resin castable, which comprises a supporting mechanism, a mixing mechanism and a mixing mechanism, the mixing box is rotationally installed on the supporting mechanism, the overturning axis of the mixing box is perpendicular to the axis in the length direction of the mixing box, and a material stirring plate set is arranged in the mixing box and spirally arranged; the mounting cover is mounted at the notch of the mixing box, and a sealing cover is rotationally mounted at an adding opening of the mounting cover; the control valve is mounted at the discharge hole of the mixing box; the stirring shaft is rotationally mounted in the shaft hole of the mounting cover, and a stirring paddle group is arranged on the stirring shaft; the driving mechanism is mounted on the supporting mechanism and is used for providing rotating power for the mixing box and the stirring shaft respectively; the stirring efficiency and the mixing uniformity are high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of raw material mixing, particularly to a raw material mixing device for dry -type transformer resin casting material preparation. BACKGROUND

[0002] As the core equipment of power system, the insulation performance of dry -type transformer directly determines the equipment life and operation safety. As the key material of insulation layer, raw materials such as epoxy resin, silicon powder and curing agent need to be mixed according to accurate proportion.

[0003] Conventional vertical agitator relies on single stirring paddle movement, and high viscosity resin and filler are prone to stratification (silicon powder settlement, resin floating), which leads to air gap or composition segregation in the insulation layer after casting. SUMMARY

[0004] To solve the above technical problems, the utility model provides a raw material mixing device for dry -type transformer resin casting material preparation with high stirring efficiency and mixing uniformity.

[0005] The raw material mixing device for dry -type transformer resin casting material preparation of the utility model comprises:

[0006] Supporting mechanism is independently fixed to ensure the stability and safety of the whole mixing device;

[0007] Mixing box is rotatably installed on the supporting mechanism, the mixing box is cylindrical structure, the mixing box overturning axis is perpendicular to the mixing box length direction axis, the axis is in horizontal state when the mixing box is in the mixing state, the axis is in vertical state when the mixing box is in the discharging and adding state, the mixing box is provided with a group of paddle plates, and the group of paddle plates is arranged in spiral, when the mixing box rotates around the overturning axis, the group of paddle plates can effectively push and overturn the materials, so that the materials are uniformly mixed in the mixing box;

[0008] The installation cover is installed at the notch of the mixing box to ensure the sealing property in the mixing process, and the adding opening of the installation cover is rotatably provided with a sealing cover for material adding and keeping closed state when not in use;

[0009] The control valve is installed at the discharge opening of the mixing box, and the end face of the discharge opening side is arc-shaped;

[0010] The stirring shaft is rotatably installed in the shaft hole of the installation cover, and the stirring shaft is provided with a group of stirring paddles;

[0011] The driving mechanism is installed on the supporting mechanism, and the driving mechanism is used for providing rotating power to the mixing box and the stirring shaft respectively.

[0012] Further, the supporting mechanism comprises:

[0013] The mounting frame is arranged in a U-shaped structure, and the bottom end of the mounting frame is provided with an adjusting foot group;

[0014] The fixed frame is coaxially provided with support shafts at both ends, the support shafts are rotationally installed in the inner holes of the mounting frame, and the mixing box is rotationally installed in the inner hole of the fixed frame;

[0015] The auxiliary frame is installed on the fixed frame, and the driving mechanism is installed on the auxiliary frame;

[0016] The power mechanism is installed on the mounting frame, and the power mechanism is used to drive the mixing box to overturn by the support shaft.

[0017] As preferred, the power mechanism comprises:

[0018] The servo motor is installed on the mounting frame, and the output end of the servo motor is coaxially installed with a worm;

[0019] The worm wheel is coaxially installed on one of the support shafts, and the worm and the worm wheel are meshingly installed;

[0020] The fixing member is installed on the mounting frame, and the worm is rotationally installed with the fixing member.

[0021] Further, the servo motor is single-start to drive the mixing box to overturn 90° through the meshing of the worm and the worm wheel, and the rotation directions of the servo motor in adjacent two starts are opposite.

[0022] As preferred, the mounting frame is provided with a blocking member, and the worm and the worm wheel are located inside the blocking member.

[0023] Further, the driving mechanism comprises:

[0024] The driving motor is installed on the auxiliary frame, the output end of the driving motor is installed with a power shaft, the power shaft is coaxially installed with a first bevel gear and a second bevel gear respectively;

[0025] The hollow shaft is coaxially installed on the mounting cover, and the hollow shaft is coaxially installed with a third bevel gear, and the first bevel gear and the third bevel gear are meshingly installed;

[0026] The fourth bevel gear is coaxially installed on the stirring shaft, and the fourth bevel gear and the second bevel gear are meshingly installed.

[0027] As preferred, the first bevel gear and the third bevel gear meshingly drive the mixing box in the opposite direction to the fourth bevel gear and the second bevel gear.

[0028] Further, the auxiliary frame is installed with a partition member, and the driving mechanism is located inside the partition member.

[0029] The raw material mixing device for preparing a resin casting material of a dry-type transformer is characterized in that: a support mechanism is independently fixed and arranged to provide a stable support base for the whole device, so that displacement of the device during operation is avoided due to vibration or external force; a mixing box is rotatably arranged on the support mechanism, and a unique cylindrical structure is matched with a turning axis perpendicular to the length direction axis, so that the mixing box can be flexibly switched between a horizontal mixing state and a vertical discharging and adding state; a group of spiral turning paddles arranged in the mixing box can push and turn the materials in all directions when the mixing box rotates around the turning axis, so that the uniformity of material mixing is significantly improved; a cover is arranged on a slot of the mixing box to effectively ensure the sealing of the mixing process and prevent material leakage; a sealing cover is rotatably arranged at an adding port of the cover, so that the adding port can be conveniently added and closed when not in use; an arc-shaped end surface is arranged on the discharging port of the mixing box to make the material discharging more smooth and reduce discharging residues; a stirring shaft is rotatably arranged on a shaft hole of the cover, and a group of stirring paddles on the shaft is matched with the rotation of the mixing box to further enhance the mixing effect of the materials; and a driving mechanism is arranged on the support mechanism to provide stable rotating power for the mixing box and the stirring shaft to realize the collaborative operation of the two and greatly improve the mixing efficiency, so as to meet the diversified needs of users for material mixing. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of a raw material mixing device for preparing a resin casting material of a dry-type transformer in a first angle in the utility model;

[0031] Figure 2 is a structural schematic view of a raw material mixing device for preparing a resin casting material of a dry-type transformer in a second angle in the utility model;

[0032] Figure 3 is a structural schematic view of a raw material mixing device for preparing a resin casting material of a dry-type transformer in a third angle in the utility model;

[0033] Figure 4 is a schematic view of the internal structure of the mixing box of the raw material mixing device for preparing a resin casting material of a dry-type transformer in the utility model;

[0034] Figure 5 is an exploded structural schematic view of the driving mechanism of the raw material mixing device for preparing a resin casting material of a dry-type transformer in the utility model;

[0035] Marked in the drawing: 1, support mechanism; 11, mounting frame; 12, adjusting foot group; 13, fixing frame; 14, support shaft; 15, auxiliary frame; 16, power mechanism; 16a, servo motor; 16b, worm; 16c, worm gear; 16d, fixing piece; 16e, blocking piece; 2, mixing box; 3, stirring plate group; 4, mounting cover; 5, sealing cover; 6, control valve; 7, stirring shaft; 8, stirring paddle group; 9, driving mechanism; 91, driving motor; 92, power shaft; 93, first bevel gear; 94, second bevel gear; 95, hollow shaft; 96, third bevel gear; 97, fourth bevel gear; 98, isolation piece. DETAILED DESCRIPTION

[0036] The specific embodiments of the utility model are described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0037] The utility model relates to a kind of raw material mixing devices for dry-type transformer resin casting material preparation, as shown in figure Figures 1 to 5 As shown in figure

[0038] Support mechanism 1 is independently fixed to ensure the stability and safety of the whole mixing device;

[0039] Mixing box 2 is rotatably installed on support mechanism 1, and the mixing box 2 is cylindrical in structure. The mixing box 2 is arranged perpendicularly to the length direction axis of the mixing box 2. When the mixing box 2 is in the mixing state, the axis is in the horizontal state. When the mixing box 2 is in the discharging and adding state, the axis is in the vertical state. The mixing box 2 is provided with a stirring plate group 3, and the stirring plate group 3 is arranged in a spiral manner. When the mixing box 2 rotates around its overturning axis, the stirring plate group 3 can effectively push and overturn the material, so that the material is uniformly mixed in the mixing box.

[0040] The mounting cover 4 is installed at the notch of the mixing box 2 to ensure the sealing property during mixing. The mounting cover 4 is rotatably provided with a sealing cover 5 at the adding opening, which is used for material adding and keeping closed when not in use.

[0041] The control valve 6 is installed at the discharge opening of the mixing box 2, and the end face of the discharge opening side is arc-shaped.

[0042] The stirring shaft 7 is rotatably installed in the shaft hole of the mounting cover 4, and the stirring shaft 7 is provided with a stirring paddle group 8.

[0043] The driving mechanism 9 is installed on the support mechanism 1, and the driving mechanism 9 is used to provide rotating power for the mixing box 2 and the stirring shaft 7 respectively.

[0044] The support mechanism 1 is independently fixed and arranged to provide a stable support base for the whole device, so as to ensure that the device will not be displaced due to vibration or external force during operation. The mixing box 2 is rotatably arranged on the support mechanism 1. The unique cylindrical structure cooperates with the design of the overturning axis perpendicular to the length direction axis, so that the mixing box 2 can be flexibly switched between the horizontal mixing state and the vertical discharging and adding state. The helically arranged stirring plate group 3 in the mixing box 2 can push and overturn the materials in all directions when the mixing box 2 rotates around the overturning axis, thereby significantly improving the uniformity of material mixing. The mounting cover 4 is arranged in the slot of the mixing box 2, which effectively ensures the sealing of the mixing process and prevents material leakage. The sealing cover 5 rotatably arranged at the adding port of the mounting cover 4 is convenient to operate, which can facilitate material adding and keep the adding port closed when not in use. The control valve 6 is arranged at the discharge port of the mixing box 2. The arc-shaped end face design on the discharge port side makes the material discharge more smooth and reduces the discharge residue. The stirring shaft 7 is rotatably arranged in the shaft hole of the mounting cover 4. The stirring paddle group 8 on the shaft cooperates with the rotation of the mixing box 2, thereby further enhancing the mixing effect of the materials. The driving mechanism 9 is arranged on the support mechanism 1, which can provide stable rotating power for the mixing box 2 and the stirring shaft 7 respectively, so as to realize the collaborative operation of the two and greatly improve the mixing efficiency, thereby fully meeting the diversified needs of users for material mixing.

[0045] As a preferred solution, as shown in Figures 1 to 3 The support mechanism 1 comprises:

[0046] The mounting frame 11 is arranged in a U-shaped structure, and the bottom end of the mounting frame 11 is provided with an adjusting foot group 12.

[0047] The fixed frame 13 is coaxially provided with a support shaft 14 at both ends, and the support shaft 14 is rotatably arranged in the inner hole of the mounting frame 11. The mixing box 2 is rotatably arranged in the inner hole of the fixed frame 13.

[0048] The auxiliary frame 15 is arranged on the fixed frame 13, and the driving mechanism 9 is arranged on the auxiliary frame 15.

[0049] The power mechanism 16 is arranged on the mounting frame 11, and the power mechanism 16 is used to drive the mixing box 2 to overturn through the support shaft 14.

[0050] The mounting frame 11 in U-shaped structure builds a stable frame for the whole device. The adjusting foot group 12 at the bottom end of the mounting frame 11 can flexibly adjust the levelness of the device according to different placement sites. The support shafts 14 coaxially arranged at the two ends of the fixed frame 13 are rotatably installed in the inner holes of the mounting frame 11, which not only provides stable overturning support for the mixing box 2, but also enables the mixing box 2 to flexibly overturn around the support shafts 14, so as to easily realize the switching of different states such as mixing, discharging and adding materials. The auxiliary frame 15 is installed on the fixed frame 13 to provide a reliable mounting position for the driving mechanism 9. The power mechanism 16 is installed on the mounting frame 11 and can directly drive the support shafts 14 to rotate, thereby driving the mixing box 2 to overturn. This design simplifies the power transmission path, improves the switching efficiency of the working mode of the mixing box 2, and makes the overturning operation of the mixing box 2 more smooth.

[0051] As a preferred solution, as shown in Figures 1 to 3 The power mechanism 16 comprises:

[0052] The servo motor 16a is installed on the mounting frame 11, and the output end of the servo motor 16a is coaxially installed with the worm 16b.

[0053] The worm gear 16c is coaxially installed on one of the support shafts 14, and the worm 16b is meshingly installed with the worm gear 16c.

[0054] The fixing member 16d is installed on the mounting frame 11, and the worm 16b is rotatably installed with the fixing member 16d.

[0055] The single start of the servo motor 16a drives the mixing box 2 to overturn 90° through the meshing of the worm 16b and the worm gear 16c, and the rotation directions of the adjacent two starts of the servo motor 16a are opposite.

[0056] The servo motor 16a is installed on the mounting frame 11 to provide a stable and reliable power source for the overturning of the mixing box 2. The worm 16b coaxially installed at the output end of the servo motor 16a is meshingly engaged with the worm gear 16c coaxially installed on the support shaft 14. By utilizing the large transmission ratio and self-locking characteristics of the worm gear and worm transmission, the rotation of the servo motor 16a can be smoothly and accurately transmitted to the support shaft 14, realizing accurate control of the overturning angle of the mixing box 2. The mixing box 2 can accurately overturn 90° with each single start of the servo motor 16a, meeting the angle requirements of the mixing box 2 in different working states. Moreover, after overturning to the position, the self-locking characteristics of the worm gear and worm prevent the mixing box 2 from accidentally rotating, ensuring the safety of the device operation. The fixing member 16d is installed on the mounting frame 11 to provide stable rotating support for the worm 16b, ensuring that the worm 16b remains stable during transmission and avoiding shaking or deviation. The design that the rotation directions of the adjacent two starts of the servo motor 16a are opposite ingeniously realizes the alternating switching of the mixing box 2 between the horizontal mixing state and the vertical discharging and adding state, simplifies the operation process, and reduces the working intensity of the operator.

[0057] As a preferred solution, as shown in Figure 1 The mounting frame 11 is provided with a barrier 16e, and the worm 16b and the worm wheel 16c are located inside the barrier 16e;

[0058] The barrier 16e wraps the worm 16b and the worm wheel 16c, effectively preventing external foreign matter from entering the transmission mechanism, avoiding transmission failure caused by foreign matter interference, prolonging the service life of the worm 16b and the worm wheel 16c. In addition, the barrier 16e plays a physical protection role for the worm 16b and the worm wheel 16c, reducing the risk of accidental contact with the transmission components and injury to the operator, and creating a safe operating environment.

[0059] As a preferred solution, as shown in Figures 1 to 5 The driving mechanism 9 comprises:

[0060] The driving motor 91 is installed on the auxiliary frame 15, and the driving motor 91 is provided with a power shaft 92 at the output end. The first bevel gear 93 and the second bevel gear 94 are coaxially installed on the power shaft 92, respectively;

[0061] The hollow shaft 95 is coaxially installed on the mounting cover 4, and the third bevel gear 96 is coaxially installed on the hollow shaft 95. The first bevel gear 93 is meshed with the third bevel gear 96;

[0062] The fourth bevel gear 97 is coaxially installed on the stirring shaft 7, and the fourth bevel gear 97 is meshed with the second bevel gear 94;

[0063] The first bevel gear 93 and the third bevel gear 96 mesh to drive the mixing box 2 in the opposite direction of the fourth bevel gear 97 and the second bevel gear 94 mesh to drive the stirring shaft 7 to rotate;

[0064] The driving motor 91 is installed on the auxiliary frame 15, and provides stable power output for rotation of the mixing box 2 and the stirring shaft 7, the first bevel gear 93 and the second bevel gear 94 coaxially installed on the power shaft 92 at the output end of the driving motor 91 are meshed with the third bevel gear 96 on the hollow shaft 95 and the fourth bevel gear 97 on the stirring shaft 7 respectively, and an efficient power transmission network is constructed, so that only one driving motor 91 can drive the mixing box 2 and the stirring shaft 7 to rotate simultaneously, the power structure of the device is effectively simplified, the first bevel gear 93 is meshed with the third bevel gear 96 to accurately drive the mixing box 2 to rotate, the fourth bevel gear 97 is meshed with the second bevel gear 94 to synchronously drive the stirring shaft 7 to rotate, and the rotation directions of the mixing box 2 and the stirring shaft 7 are opposite, so that the materials in the mixing box 2 are subjected to different direction forces to achieve more sufficient tumbling and mixing, and the uniformity and efficiency of mixing are greatly improved, the hollow shaft 95 is coaxially installed on the mounting cover 4 to provide stable support for the third bevel gear 96 and ensure the stability of power transmission, and the unique reverse rotation design enables the materials to form complex convection motion in the mixing process, so that the materials are prevented from gathering or uneven mixing.

[0065] As a preferred solution, as shown in Figure 1 The auxiliary frame 15 is provided with a isolation piece 98, and the driving mechanism 9 is located in the isolation piece 98.

[0066] The isolation piece 98 wraps the driving mechanism 9, effectively prevents external foreign matters such as dust and debris from invading, prevents foreign matters from entering the driving motor 91 or interfering with gear transmission, reduces the risk of equipment failure caused by foreign matters, prolongs the service life of the driving mechanism 9, and blocks the noise generated during the operation of the driving motor 91 and the meshing of gears during the operation of the device, reduces the noise pollution of the working area, and creates a more quiet working environment. In addition, the isolation piece 98 plays a physical protection role, reduces the risk of injury of the operator caused by accidental touching of the high-speed rotating power shaft 92, bevel gears and other components, and protects the personal safety of the operator.

[0067] The raw material mixing device for preparing the resin castable of the dry-type transformer has a common mechanical installation mode, connection mode or setting mode, and can be implemented as long as the beneficial effects can be achieved.

[0068] The above is only a preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A raw material mixing device for preparing resin castable for dry-type transformers, characterized in that, Include: Supporting mechanism (1), independent fixedly arranged; Mixing box (2), rotatably mounted on the supporting mechanism (1), the mixing box (2) is arranged perpendicularly to the length direction axis of the mixing box (2), the mixing box (2) is provided with a group of stirring plates (3), and the stirring plate group (3) is arranged in spiral; Mounting cover (4), mounted on the notch of the mixing box (2), and a sealing cover (5) is rotatably mounted on the addition opening of the mounting cover (4); Control valve (6), mounted on the discharge opening of the mixing box (2); Stirring shaft (7), rotatably mounted in the shaft hole of the mounting cover (4), and the stirring shaft (7) is provided with a stirring paddle group (8); Driving mechanism (9), mounted on the supporting mechanism (1), the driving mechanism (9) is used to provide rotating power for the mixing box (2) and the stirring shaft (7) respectively.

2. The raw material mixing device for dry-type transformer resin-potting material preparation according to claim 1, characterized in that, The supporting mechanism (1) comprises: Mounting bracket (11), arranged as a U-shaped structure, and the bottom end of the mounting bracket (11) is provided with an adjusting foot group (12); Fixed frame (13), both ends are coaxially provided with support shafts (14), and the support shafts (14) are rotatably mounted in the inner holes of the mounting bracket (11), and the mixing box (2) is rotatably mounted in the inner holes of the fixed frame (13); Auxiliary frame (15), mounted on the fixed frame (13), the driving mechanism (9) is mounted on the auxiliary frame (15); Power mechanism (16), mounted on the mounting bracket (11), the power mechanism (16) is used for the support shaft (14) to drive the mixing box (2) to overturn.

3. The raw material mixing device for dry-type transformer resin-potting material preparation according to claim 2, wherein The power mechanism (16) comprises: Servo motor (16a), mounted on the mounting bracket (11), the output end of the servo motor (16a) is coaxially provided with a worm (16b); Worm wheel (16c), coaxially mounted on one of the support shafts (14), the worm (16b) is meshed with the worm wheel (16c); Fixed part (16d), mounted on the mounting bracket (11), the worm (16b) is rotatably mounted with the fixed part (16d).

4. The raw material mixing device for dry-type transformer resin-potting material preparation according to claim 3, wherein The servo motor (16a) is single started, the worm (16b) and the worm wheel (16c) are meshed to drive the mixing box (2) to overturn 90°, and the servo motor (16a) is opposite in adjacent two starting rotation directions.

5. The raw material mixing device for dry-type transformer resin-potting material preparation according to claim 3, wherein The mounting bracket (11) is provided with a blocking piece (16e), and the worm (16b) and the worm wheel (16c) are located inside the blocking piece (16e).

6. The raw material mixing device for dry-type transformer resin-potting material preparation according to claim 2, wherein The driving mechanism (9) comprises: Driving motor (91), mounted on the auxiliary frame (15), the output end of the driving motor (91) is provided with a power shaft (92), and the power shaft (92) is coaxially provided with a first bevel gear (93) and a second bevel gear (94) respectively; Hollow shaft (95), coaxially mounted on the mounting cover (4), and the hollow shaft (95) is coaxially provided with a third bevel gear (96), and the first bevel gear (93) is meshed with the third bevel gear (96); A fourth bevel gear (97) is coaxially installed on the stirring shaft (7), and the fourth bevel gear (97) is meshed with the second bevel gear (94).

7. The raw material mixing device for dry-type transformer resin-potting material preparation according to claim 6, wherein The first bevel gear (93) and the third bevel gear (96) mesh to drive the mixing box (2) in a direction, and the fourth bevel gear (97) and the second bevel gear (94) mesh to drive the stirring shaft (7) to rotate in a direction opposite to the direction.

8. The raw material mixing device for preparing a dry transformer resin impregnated material according to claim 6, characterized in that, An isolation piece (98) is installed on the auxiliary frame (15), and the driving mechanism (9) is located inside the isolation piece (98).

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