CN201059300Y - Plunger type hydraulic cylinder of copper ingot smelting furnace - Google Patents

Abstract

The utility model discloses a copper ingot smelting furnace plunger type pneumatic cylinder, including cylinder body, plunger, gland and guide pin bushing, the guide pin bushing still includes twice Y shape sealing washer and twice O shape sealing washer, is used for the sealing of cylinder body, the both ends of guide pin bushing still include polytetrafluoroethylene direction support ring one respectively for direction and support. Adopted the technical scheme of the utility model for the sealing device of plunger type pneumatic cylinder is convenient for install, has improved sealing performance.

Description

A plunger type hydraulic cylinder for copper ingot smelting furnace

technical field

The utility model relates to a plunger type hydraulic cylinder of a copper ingot smelting furnace.

Background technique

The tilting of the cored copper melting furnace is mainly controlled by two plunger hydraulic cylinders. Fig. 1 is a schematic cross-sectional structure diagram of a plunger-type hydraulic cylinder in the prior art. As shown in Figure 1, the plunger-type hydraulic cylinder includes a cylinder body 11, a plunger 12 and a sealing device 13. There is an oil inlet and outlet at the bottom of the cylinder body. When the pressure oil is input into the cylinder body, the plunger moves upward to lift up the furnace body. , when the pressure oil flows back to the oil tank, the plunger moves downward under the force of the furnace body. The sealing device includes a guide sleeve 14 and a gland 15. The gland is made of carbon steel, and the inner hole is pressed into a guide sleeve made of QAL9-4 wear-resistant metal material to guide the plunger. Although the guide sleeve is made of wear-resistant metal materials, the material is saved, but the processing technology is complicated, the wall is thin and difficult to process, and the maintenance is difficult after the inner hole is worn; moreover, the guide sleeve is installed in the gland and connected by the gland and the cylinder thread Positioning and installation are time-consuming and labor-intensive. If the gland is not fastened in place, the guide sleeve will slide and the sealing effect will not be achieved. In addition, there are many sealing elements and leakage points, and it is unreasonable to set the ○-shaped sealing ring at the top of the wear-resistant guide sleeve and the bottom of the gland; The bore is severely worn, causing pressure oil to leak from the bore to the gland.

Utility model content

The purpose of the utility model is to provide a plunger-type hydraulic cylinder for a copper ingot smelting furnace, which is easy to install and has good sealing performance.

For this purpose, the utility model adopts the following technical solutions:

A plunger-type hydraulic cylinder for a copper ingot smelting furnace, comprising a cylinder body, a plunger, a gland and a guide sleeve, the guide sleeve also includes two Y-shaped sealing rings and two O-shaped sealing rings for the cylinder Body sealing, the two ends of the guide sleeve also include a polytetrafluoroethylene guide ring for guiding and supporting.

A dust-proof ring is installed inside the gland.

The two Y-shaped sealing rings are located inside the guide sleeve, and the two O-shaped sealing rings are located outside the guide sleeve.

The guide sleeve is a carbon steel guide sleeve.

The guide sleeve is positioned according to the shoulder in the cylinder body, and the front end of the guide sleeve is compressed by the threaded connection between the gland and the cylinder body.

The Y-shaped sealing ring is a polytetrafluoroethylene Y-shaped sealing ring.

Adopting the technical scheme of the utility model makes the sealing device of the plunger hydraulic cylinder easy to install and improves the sealing performance.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of plunger type hydraulic cylinder in the prior art;

Fig. 2 is a schematic cross-sectional structure diagram of a plunger-type hydraulic cylinder in a specific embodiment of the present invention.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Fig. 2 is a schematic cross-sectional structure diagram of the plunger-type hydraulic cylinder in this specific embodiment. As shown in Figure 2, the plunger-type hydraulic cylinder includes a cylinder body 21, a plunger 22, a gland 23 and a guide sleeve 24. The guide sleeve is a carbon steel guide sleeve, and a Two Y-shaped sealing rings 25, the Y-shaped sealing rings are polytetrafluoroethylene Y-shaped sealing rings, which can withstand high temperatures up to 350°C, and two ○-shaped sealing rings 26 are installed on the outer side of the guide sleeve in contact with the cylinder body, Two roads of polytetrafluoroethylene guide support rings 27 are installed at the upper and lower ends of the inner side contacting with the plunger of the guide sleeve for guiding and supporting. A dust-proof ring 28 is also installed on the inner side of the gland to protect the sealing ring.

This design is non-metallic contact between the plunger and the guide sleeve, which has small frictional resistance, wear resistance and long service life; the groove of the guide support ring is simple to process, and the guide support ring is easy to replace when worn; Shoulder positioning, accurate positioning, the front end is pressed by the threaded connection of the gland and the cylinder body.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, any person familiar with the technology can easily think of it within the technical scope disclosed in the utility model Changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (6)

1. copper ingot smelting furnace plunger type cylinder, comprise cylinder body, plunger, gland and guide pin bushing, it is characterized in that, described guide pin bushing also comprises twice y-shaped ring and twice ○Xing Mifengquan, be used for the sealing of described cylinder body, the two ends of described guide pin bushing also comprise teflon guiding support ring respectively one, are used for guiding and support.

2. a kind of copper ingot smelting furnace plunger type cylinder according to claim 1 is characterized in that, the inner dust ring of installing of described gland.

3. a kind of copper ingot smelting furnace plunger type cylinder according to claim 1 is characterized in that described twice y-shaped ring is positioned at the inboard of described guide pin bushing, and described twice ○Xing Mifengquan is positioned at the outside of described guide pin bushing.

4. a kind of copper ingot smelting furnace plunger type cylinder according to claim 1 is characterized in that described guide pin bushing is the carbon steel guide pin bushing.

5. a kind of copper ingot smelting furnace plunger type cylinder according to claim 1 is characterized in that, according to the shoulder location, the front end of described guide pin bushing utilizes being threaded of gland and cylinder body to compress to described guide pin bushing in described cylinder body.

6. a kind of copper ingot smelting furnace plunger type cylinder according to claim 1 is characterized in that described y-shaped ring is the teflon y-shaped ring.

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