Feed system for degassing tank

Abstract

The present invention discloses a feeding system for a degassing tank, which includes a stirring shaft. The stirring shaft is of a hollow structure. A liquid outlet is arranged on the lower side wall of the stirring shaft, and a liquid inlet pipe is arranged on the upper side wall of the stirring shaft. The liquid inlet pipe is communicated with a resin melting system through a conveying pipeline. It further includes a material guiding cylinder, which includes a first annular plate and a second annular plate. The first annular plate and the second annular plate are connected by a bottom plate. A material guiding cavity is formed between the first annular plate and the second annular plate. The first annular plate is sleeved outside the stirring shaft. A spiral diversion groove is arranged on the bottom plate, and the outlet of the spiral diversion groove penetrates through the bottom plate. The material guiding cylinder is connected with a telescopic mechanism through a connecting rod. It also includes a material guiding pipe, one end of which is communicated with a dry silica powder container, and the other end extends into the material guiding cavity. The present invention solves the problem that the existing feeding method causes the uneven distribution of dry silica powder in the molten resin.

Description

Technical Field

[0001] The present invention relates to the technical field of current transformer casting, and specifically relates to a feeding system for a degassing tank. Background Art

[0002] The casting process of a current transformer includes drying silica powder, melting resin and curing agent, configuring a mixed filler of dried silica powder and melted resin and performing vacuum degassing, configuring a mixed filler of dried silica powder and curing agent and performing vacuum degassing, mixing the above two mixed fillers to obtain a final mixed material in a vacuum environment and performing degassing, casting and curing the final mixed material, demolding the cured final mixed material and performing post-curing treatment.

[0003] The vacuum degassing during the current transformer casting process is carried out in a vacuum degassing tank. The vacuum degassing tank includes a tank body, a stirring device is arranged in the tank body, the tank body is provided with a feed inlet, the dried silica powder is first introduced into the tank body and then the melted resin is injected into the tank body for stirring.

[0004] The existing feeding method causes the dried silica powder to be unevenly distributed in the melted resin. Summary of the Invention

[0005] The purpose of the present invention is to provide a feeding system for a degassing tank to solve the problem that the existing feeding method causes the dried silica powder to be unevenly distributed in the melted resin.

[0006] The present invention is achieved by the following technical solutions:

[0007] A feeding system for a degassing tank includes a stirring device. The stirring device includes a stirring shaft and stirring blades arranged on the stirring shaft. The stirring shaft is of a hollow structure. A liquid outlet is arranged on the lower side wall of the stirring shaft, and a liquid inlet pipe is arranged on the upper side wall of the stirring shaft. The liquid inlet pipe is communicated with a resin melting system through a conveying pipeline. It also includes a guiding cylinder. The guiding cylinder includes a first annular plate and a second annular plate. The first annular plate and the second annular plate are connected by a bottom plate. A guiding cavity is formed between the first annular plate and the second annular plate. The first annular plate is sleeved outside the stirring shaft. A spiral diversion groove is arranged on the bottom plate, and the outlet of the spiral diversion groove penetrates through the bottom plate. The guiding cylinder is connected to a telescopic mechanism through a connecting rod. It further includes a guiding pipe. One end of the guiding pipe is communicated with a dried silica powder container, and the other end extends into the guiding cavity.

[0008] The guiding cylinder of the present invention realizes rising and falling through a telescopic mechanism arranged outside the tank body. The stirring shaft plays a guiding role. The guiding cylinder and the stirring shaft are arranged in the tank body.

[0009] The working principle of the present invention is as follows:

[0010] The dry silica powder is introduced into the feeding cavity of the feeding cylinder through a feeding pipe (equipped with a valve and a pump), and then enters the tank body through a spiral diversion groove. The melted resin enters the middle gap of the stirring shaft through a conveying pipe (equipped with a valve and a pump), and then enters the tank body from the liquid outlet. The dry silica powder and the resin can be fed crosswise: that is, after introducing a part of the dry silica powder into the tank body, the feeding cylinder is lifted upward, and then a part of the resin is introduced, and then a part of the dry silica powder is introduced again, and so on in a cycle until the dry silica powder and the resin are all introduced into the tank body in proportion, and then the stirring starts.

[0011] In the present invention, the stirring shaft is set as a hollow structure for resin feeding, and a feeding cylinder that can move up and down is set for dry silica powder feeding. That is, the feeding mechanisms of the resin and the dry silica powder are independent of each other, and separate feeding can be achieved. Crosswise feeding of the dry silica powder and the resin can be realized, avoiding the problem of uneven distribution of the dry silica powder in the resin caused by introducing the dry silica powder all at once and then introducing the resin.

[0012] At the same time, in the present invention, the stirring shaft is set as a hollow structure for resin feeding, and the feeding cylinder is arranged outside the stirring shaft. After moving the feeding cylinder upward to the top of the tank body, it will not affect the subsequent stirring.

[0013] Furthermore, a feeding plate matching with the outlet of the spiral diversion groove is arranged at the bottom of the bottom plate.

[0014] The feeding plate has a blocking effect on the dry silica powder led out from the outlet of the spiral diversion groove, avoiding it from impacting on the side wall of the tank body, and further improving the uniformity of the dry silica powder in the resin.

[0015] Furthermore, the feeding plate is an arc-shaped plate, and the discharging end of the arc-shaped plate points to the stirring shaft.

[0016] The above setting is beneficial to introducing the dry silica powder into the center of the tank body, and further improving the uniformity of the dry silica powder in the resin.

[0017] Furthermore, the feeding pipe is detachably fixed on the connecting rod.

[0018] It is convenient to realize the synchronous movement of the feeding pipe and the connecting rod, and the relative position between the feeding pipe and the feeding cylinder will not change due to the movement of the feeding cylinder.

[0019] Furthermore, the top between the first annular plate and the second annular plate is connected by a cross plate, and the connecting rod is vertically arranged on the cross plate.

[0020] Furthermore, the second annular plate is in a horn structure.

[0021] That is, the feeding cavity has a structure that is larger at the top and smaller at the bottom, which is convenient for introducing the dry silica powder into the feeding cavity of the tank.

[0022] Furthermore, a plurality of liquid outlets are uniformly arranged from top to bottom.

[0023] The above arrangement is conducive to quickly introducing the resin into the tank body.

[0024] Furthermore, two connecting rods are symmetrically arranged.

[0025] It is conducive to improving the stability when moving the guiding cylinder.

[0026] Furthermore, the liquid outlet end of the liquid inlet pipe is arranged to incline downward.

[0027] It is conducive to introducing the resin into the middle gap of the rotating shaft.

[0028] Furthermore, the telescopic mechanism is a hydraulic cylinder.

[0029] The hydraulic cylinder is a prior art.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. By setting the stirring shaft to be a hollow structure for resin feeding and arranging a guiding cylinder that can move up and down for dry silica powder feeding, that is, the feeding mechanisms for resin and dry silica powder are independent of each other, separate feeding can be achieved, and cross-feeding of dry silica powder and resin can be realized, avoiding the problem of uneven distribution of dry silica powder in the resin caused by introducing dry silica powder first and then resin at one time.

[0032] 2. By setting the stirring shaft to be a hollow structure for resin feeding and arranging the guiding cylinder outside the stirring shaft, after moving the guiding cylinder up to the top of the tank body, it will not affect subsequent stirring.

[0033] 3. The guiding plate has a blocking effect on the dry silica powder exported from the outlet of the spiral guiding groove, avoiding it from impacting on the side wall of the tank body, and further improving the uniformity of dry silica powder in the resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0035] Figure 1 is a schematic structural diagram of the feeding system;

[0036] Figure 2 is a schematic structural diagram of the guiding cylinder;

[0037] The reference numerals in the drawings and the corresponding component names:

[0038] 1 - connecting rod, 2 - material guiding pipe, 3 - stirring shaft, 4 - liquid inlet pipe, 5 - conveying pipeline, 6 - material guiding cylinder, 7 - material guiding plate, 8 - liquid outlet, 9 - cross plate, 61 - second annular plate, 62 - bottom plate, 63 - spiral flow guiding groove, 64 - first annular plate. Detailed implementation manner

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0040] Embodiment 1:

[0041] As Figure 1 - Figure 2 shown, a feeding system for a degassing tank includes a stirring device. The stirring device includes a stirring shaft 3 and stirring blades provided on the stirring shaft 3. The stirring shaft 3 is a hollow structure. A liquid outlet 8 is provided on the lower side wall of the stirring shaft 3, and a liquid inlet pipe 4 is provided on the upper side wall of the stirring shaft 3. The liquid inlet pipe 4 is communicated with a resin melting system through a conveying pipeline 5. It further includes a material guiding cylinder 6. The material guiding cylinder 6 includes a first annular plate 64 and a second annular plate 61. The first annular plate 64 and the second annular plate 61 are connected by a bottom plate 62. A material guiding cavity is formed between the first annular plate 64 and the second annular plate 61. The first annular plate 64 is sleeved outside the stirring shaft 3. A spiral flow guiding groove 63 is provided on the bottom plate 62. The outlet of the spiral flow guiding groove 63 penetrates through the bottom plate 62. The material guiding cylinder 6 is connected to a telescopic mechanism through a connecting rod 1. It further includes a material guiding pipe 2. One end of the material guiding pipe 2 is communicated with a dry silica powder container, and the other end extends into the material guiding cavity. A cross plate 9 is connected between the tops of the first annular plate 64 and the second annular plate 61. The connecting rod 1 is vertically arranged on the cross plate 9. The telescopic mechanism is a hydraulic cylinder.

[0042] The working principle of this embodiment is as follows:

[0043] The dry silica powder is introduced into the material guiding cavity of the material guiding cylinder 6 through the material guiding pipe 2, and then enters the tank through the spiral flow guiding groove 63. The melted resin enters the middle gap of the stirring shaft 3 through the conveying pipeline 5, and then enters the tank through the liquid outlet 8. The dry silica powder and the resin can be fed crosswise: that is, after introducing a part of the dry silica powder into the tank, the material guiding cylinder 6 is lifted upward, then a part of the resin is introduced, and then part of the dry silica powder is introduced again, and so on until the dry silica powder and the resin are all introduced into the tank in proportion, and then the stirring starts.

[0044] In this embodiment, the stirring shaft 3 is set as a hollow structure for resin feeding, and a material guiding cylinder 6 that can move up and down is set for dry silica powder feeding. That is, the feeding mechanisms for resin and dry silica powder are independent of each other, enabling separate feeding, and can achieve cross-feeding of dry silica powder and resin, avoiding the problem of uneven distribution of dry silica powder in resin caused by introducing dry silica powder first and then resin at one time.

[0045] Embodiment 2:

[0046] As Figure 1 - Figure 2 shown, based on Embodiment 1, a material guiding plate 7 matching the outlet of the spiral guiding groove 63 is arranged at the bottom of the bottom plate 62; the material guiding plate 7 is an arc-shaped plate, and the discharging end of the arc-shaped plate points to the stirring shaft 3.

[0047] In this embodiment, the material guiding plate 7 has a blocking effect on the dry silica powder led out from the outlet of the spiral guiding groove 63, avoiding it impacting on the side wall of the tank body, and further improving the uniformity of dry silica powder in resin.

[0048] Embodiment 3:

[0049] As Figure 1 - Figure 2 shown, based on Embodiment 1, the material guiding pipe 2 is tied to the connecting rod 1 by a fixing band; the second annular plate 61 is in a horn structure; a plurality of liquid outlets 8 are evenly arranged from top to bottom; two connecting rods 1 are symmetrically arranged; the liquid discharging end of the liquid inlet pipe 4 is arranged to incline downward.

[0050] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A feeding system for a degassing tank, comprising a stirring device, the stirring device including a stirring shaft (3) and stirring blades provided on the stirring shaft (3). Characterized in that the stirring shaft (3) is of a hollow structure, a liquid outlet (8) is provided on the lower side wall of the stirring shaft (3), a liquid inlet pipe (4) is provided on the upper side wall of the stirring shaft (3), and the liquid inlet pipe (4) is communicated with a resin melting system through a conveying pipeline (5); further comprising a material guiding cylinder (6), the material guiding cylinder (6) including a first annular plate (64) and a second annular plate (61), the first annular plate (64) and the second annular plate (61) being connected by a bottom plate (62), a material guiding cavity being formed between the first annular plate (64) and the second annular plate (61), the first annular plate (64) being sleeved outside the stirring shaft (3), a spiral guiding groove (63) being provided on the bottom plate (62), an outlet of the spiral guiding groove (63) penetrating through the bottom plate (62), the material guiding cylinder (6) being connected with a telescopic mechanism through a connecting rod (1), further comprising a material guiding pipe (2), one end of the material guiding pipe (2) being communicated with a dry silica powder container, and the other end extending into the material guiding cavity, a material guiding plate (7) being provided at the bottom of the bottom plate (62) and cooperating with the outlet of the spiral guiding groove (63), and the material guiding pipe (2) being detachably fixed on the connecting rod (1).

2. The feeding system for a degassing tank according to claim 1, Characterized in that the material guiding plate (7) is an arc-shaped plate, and the discharging end of the arc-shaped plate points to the stirring shaft (3).

3. The feeding system for a degassing tank according to claim 1, Characterized in that the top between the first annular plate (64) and the second annular plate (61) is connected by a cross plate (9), and the connecting rod (1) is vertically arranged on the cross plate (9).

4. The feeding system for a degassing tank according to claim 1, Characterized in that the second annular plate (61) is in a horn structure.

5. The feeding system for a degassing tank according to claim 1, Characterized in that a plurality of the liquid outlets (8) are uniformly arranged from top to bottom.

6. The feeding system for a degassing tank according to claim 1, Characterized in that two of the connecting rods (1) are symmetrically arranged.

7. The feeding system for a degassing tank according to claim 1, Characterized in that the liquid outlet end of the liquid inlet pipe (4) is arranged to incline downward.

8. The feeding system for a degassing tank according to any one of claims 1-7, Characterized in that the telescopic mechanism is a hydraulic cylinder.

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