Novel oil injection valve device

Abstract

The invention belongs to the technical field of internal mixers, and discloses a novel oil injection valve device. Comprising a valve body, a valve rod, a copper sleeve, a spring, a cover and a plug screw. The valve rod is positioned in the valve body; the copper sleeve is arranged between the valve rod and the valve body, is sleeved on the valve rod and plays a role in supporting and guiding the valve body; one end of the valve rod is in a protruding shape, and the spring is located between one end of the valve rod and the copper sleeve. One end of the valve body is tightly attached to the valve rod, and the other end is in threaded connection with the mounting cover; the thread on the cover end side is provided with an oil injection port; the screw plug is mounted on the oil injection valve; and the thread on the cover is directly connected with an oil pipe of an upper auxiliary machine of the internal mixer. According to the novel oil injection valve device designed by the invention, the structural size is greatly reduced, and the cost is reduced. The structure principle is simple, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of internal mixers, and in particular to a novel oil injection valve device. Background Art

[0002] Internal mixer is mainly used for plasticizing, mixing and final refining of rubber. It can be used in conjunction with open mixer, extruder and film cooler and other related equipment. It is a high-intensity intermittent mixing equipment developed on the basis of open mixer. Since the mixing chamber of the internal mixer is closed, the material will not leak out during the mixing process, thus avoiding the oxidation and volatilization of additives in the mixture, and liquid additives can be added. The closed mixing chamber effectively improves the working environment, reduces labor intensity, shortens the production cycle, and creates conditions for the application of automatic control technology. A new type of oil injection device has been developed, which is installed on the mixing chamber of the internal mixer. The number of oil injection valves is configured according to user needs. It needs to be used in conjunction with the upper auxiliary machine, and the purpose of automatically injecting process oil into the mixing chamber is completed through the electrical program setting. As an essential auxiliary oil injection device for the internal mixer, its function and quality seriously affect the quality of rubber mixing in the internal mixer. Summary of the invention

[0003] The purpose of the present invention is to provide a novel oil injection valve device, which has a simple structure, reliable operation, and is very convenient to install, debug and maintain.

[0004] The technical solution of the present invention is as follows: a novel oil injection valve device, comprising a valve body 1, a valve stem 2, a copper sleeve 3, a spring 4, a cover 5 and a screw plug 6;

[0005] The valve stem 2 is located in the valve body 1; the copper sleeve 3 is arranged between the valve stem 2 and the valve body 1, and is sleeved on the valve stem 2 to support and guide the valve body 2; one end of the valve stem 2 is convex, and the spring 4 is located between one end of the valve stem 2 and the copper sleeve 3;

[0006] One end of the valve body 1 is tightly fitted with the valve stem 2, and the other end is threadedly connected to the mounting cover 5; the thread on the end side of the cover 5 is provided with an oil filling port; the screw plug 6 is installed on the oil filling valve; the thread on the cover 5 is directly connected to the auxiliary oil pipe on the internal mixer.

[0007] In the initial state, one end of the valve stem 2 is in contact with the valve body 1 , and the other end of the valve stem 2 is spaced apart from one end of the valve body 1 .

[0008] In the oil filling state, oil is filled through the oil filling valve; the oil filling pressure moves the valve stem 2 toward its other end, and the spring 4 is compressed, so that a gap is generated between one end of the valve stem 2 and the valve body 1, and the process oil enters the mixing chamber through the gap through the oil filling port; when the oil filling is stopped, the valve stem 2 is pulled toward its one end by the elastic force of the spring 4 itself, so that the valve stem 2 and the valve body 1 are closed.

[0009] An annular steam channel is provided outside the novel oil injection valve device; the steam channel is provided with two steam ports 7, and the process oil is heated and insulated by injecting steam therein, so that the process oil can be smoothly injected into the mixing chamber at any temperature.

[0010] The novel oil injection valve device is connected to the mixing chamber in a flange type.

[0011] Beneficial effects of the present invention: The novel oil injection valve device designed by the present invention has a greatly reduced structure volume, reduced cost, simple structure principle and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of a new oil injection valve device;

[0013] Figure 2 It is a schematic diagram of the structure of a traditional oil injection valve.

[0014] In the figure: 1-valve body; 2-valve stem; 3-copper sleeve; 4-spring; 5-cover; 6-screw plug; 7-steam port; 8-oil filling valve cylinder. DETAILED DESCRIPTION

[0015] A new type of oil filling valve device, see Figure 1 When oil injection is required, the valve stem 2 is pushed forward by the oil injection pressure, so that a gap is generated between the valve stem 2 and the valve body 1, and the process oil enters the mixing chamber through the gap. When the oil injection is stopped, the valve stem 2 is pulled back by the elastic force of the spring 4 itself, so that the valve stem 2 and the valve body 1 are closed; at the same time, there are two steam ports 7 on the outside of the oil injection device, and the process oil can be heated and kept warm by injecting steam, so that the process oil can be smoothly injected into the mixing chamber at any temperature; the connection between the oil injection device and the mixing chamber adopts a flange connection, which avoids the oil leakage caused by the conventional threaded connection.

[0016] Conventional oil filling valve device, see Figure 2 When the oil injection valve cylinder 8 needs to be injected with oil, the valve stem 2 is pushed backward by the oil injection pressure, so that a gap is generated between the valve stem 2 and the valve body 1, and the process oil enters the mixing chamber through the gap. When the oil injection is stopped, compressed air needs to be injected, and the compressed air pushes the valve stem 2 forward to close the valve stem 2 and the valve body 1. This traditional oil injection device is bulky, has high processing costs, and has a complex principle and is inconvenient to maintain.

Claims

1. A novel oil filling valve device, characterized in that: The novel oil injection valve device comprises a valve body (1), a valve stem (2), a copper sleeve (3), a spring (4), a cover (5) and a screw plug (6); The valve stem (2) is located in the valve body (1); the copper sleeve (3) is arranged between the valve stem (2) and the valve body (1), and is sleeved on the valve stem (2) to support and guide the valve body (2); one end of the valve stem (2) is convex, and the spring (4) is located between one end of the valve stem (2) and the copper sleeve (3); One end of the valve body (1) is tightly fitted with the valve stem (2), and the other end is threadedly connected to the mounting cover (5); the thread on the end side of the cover (5) is provided with an oil filling port; the screw plug (6) is installed on the oil filling valve; the thread on the cover (5) is directly connected to the auxiliary oil pipe on the internal mixer.

2. The novel oil filling valve device according to claim 1 is characterized in that: In the initial state, one end of the valve stem (2) is in contact with the valve body (1), and the other end of the valve stem (2) is spaced apart from one end of the valve body (1).

3. The novel oil filling valve device according to claim 1 is characterized in that: In the oil filling state, oil is filled through the oil filling valve; the oil filling pressure moves the valve stem (2) toward its other end, and the spring (4) is compressed, so that a gap is generated between one end of the valve stem (2) and the valve body (1), and the process oil enters the mixing chamber through the gap via the oil filling port; when the oil filling is stopped, the valve stem (2) is pulled toward its one end by the elastic force of the spring (4), so that the valve stem (2) and the valve body (1) are closed.

4. The novel oil filling valve device according to any one of claims 1 to 3, characterized in that: The novel oil injection valve device is provided with an annular steam channel on the outside; the steam channel is provided with two steam ports (7), and the process oil is heated and insulated by injecting steam into the steam channel, so that the process oil can be smoothly injected into the mixing chamber at any temperature.

5. The novel oil filling valve device according to any one of claims 1 to 3, characterized in that: The novel oil injection valve device is connected to the mixing chamber in a flange type.

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