KR100705694B1 - Packing pressurization device to prevent dust on rotor side of pressurized kneader - Google Patents

Abstract

The present invention relates to a packing pressurization device for preventing dust on the rotor side of a pressurized kneader having excellent dust sealability, reliable reliability of packing surface pressure, and exchangeability by using a hydraulic pressure to push the packing to a constant surface pressure. In the apparatus for preventing the leakage of dust between the 10 and the pair of rotors 12, the piston housing 20 is respectively inserted into the shaft portion of the pair of rotors 12 and fixed to the kneading vessel (10) and; A piston rod (40) interposed between the piston housing (20) and the shaft portion of the rotor (12) and slidably moved in an axial direction; Pumping means connected to the hydraulic chamber (42) formed between the piston housing (20) and the piston rod (40); Located in the front end of the inner diameter of the piston housing 20 is characterized in that the packing (1) is pushed to the shaft end surface of the rotor 12 to the front end surface of the piston rod (40).

Kneader, Packing, Hand Pump, Rotor, Dough, Chamber, Accumulator, Check Valve

Description

Packing pressure device for preventing dust of a pressure kneader

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

1 is a front view of a general pressure kneader.

Figure 2 is a side view of Figure 1;

3 is an enlarged view illustrating main parts of FIG. 1;

Figure 4 is a block diagram of a packing device of a conventional pressure kneader.

Figure 5a is a block diagram of a packing pressurization device for preventing dust on the rotor side of the pressure kneader according to the present invention.

FIG. 5B is a cross sectional view taken along the line A-A of FIG. 5A; FIG.

6 is a hydraulic circuit diagram for operating the packing pressurization device of FIG.

<Explanation of symbols for the main parts of the drawings>

1: packing

12: rotor

20: piston housing

40: piston rod

42: hydraulic chamber

50: accumulator

60: check valve

The present invention relates to a packing device for preventing the outflow of dust generated between the kneading vessel and the rotor during the kneading operation in the pressurized kneader, in particular configured to push the packing to a constant surface pressure by using the hydraulic dust sealant and packing surface pressure The present invention relates to a packing pressurization device for preventing dust on the rotor side of a pressurized kneader having excellent reliability and exchangeability.

In general, a kneader is employed in a kneading process of mixing / doughing materials in the process of manufacturing a molded article using a synthetic resin or a polymer material. A kneading machine is a machine which prepares a dough state by mixing additives (reinforcing agent, inorganic / organic agent, pigment, etc.) to the first raw material, that is, synthetic resin, high molecular material or new material.

The structure of a typical pressurized kneader is shown in FIGS. 1 is a front view of a pressure kneader, and FIG. 2 is a side view of FIG. 1.

As shown in FIGS. 1 and 2, the pressurized kneader has a rotational force of the driving motor M transmitted to the reducer R through the belt V and the pulley P, and a pair of rotors with the reduced rotational force of the reducer R 12) rotate at different circumferential speeds by the engagement of gears G1 and G2 of different diameters.

Here, the pair of rotors 12 kneaded the kneaded material introduced into the kneading vessel 10 with the blades 12a, respectively, and kneaded the kneading vessel 10 as shown in FIG. Drain the water. At this time, each shaft portion of the pair of rotors 12 is provided with a packing 1 to prevent the leakage of dust between the kneading vessel 10, as shown in Figs. 4 is an enlarged view of a packing device portion 'B' of FIG. 3.

As shown in FIG. 4, the packing 1 is pushed to the step surface 12b of the rotor 12 by the packing sleeve 3 which pushes the coil spring 4 force to prevent dust leakage.

That is, the guide sleeve 2 is fastened to the side wall of the kneading vessel 10 by the wrench bolt 7, the packing 1 is inserted into the guide sleeve 2, and the packing sleeve 3 is the coil spring 4. It consists of the structure which presses packing (1) by force. At this time, the stud bolt 6 is fastened to the side wall of the kneading vessel 10, the compression force of the coil spring 4 inserted into the stud bolt 6 is determined by the washer 5 and the nut (8). That is, the force of the coil spring 4 pushing the packing sleeve 3 or the packing 1 is adjusted according to the fastening position of the nut 8.

Therefore, when the rotor 12 rotates for a long time during the kneading operation, the packing 1 is worn and the compression force of the coil spring 4 is lowered. In this case, since the pressing force of the packing 1 is loosened, dust is leaked between the rotor 12 and the packing 1, so that the powder to be tightened by checking the nut 8 is often checked.

In addition, even when adjusting the multiple coil springs (4) it is difficult to uniformly match the pushing force to each other, it is difficult to completely guarantee the dust tightness of the packing (1).

In addition, the replacement of the packing (1) has a disadvantage in that it takes a lot of labor and time because it is disassembled and replaced in the reverse order of assembly.

Reference numeral '100' is a 'kneading container cover', '102' is a 'cylinder' to open and close the kneading container cover 100.

Therefore, the present invention is to solve the problems of the prior art as described above, pushing the packing at a uniform pressure, there is no dust leakage, easy to adjust the pushing force, the exchange side of the pressurized kneader with excellent exchangeability The purpose is to provide a packing pressurization device for dust prevention.

Specific means of the present invention for achieving the above object,

An apparatus for preventing dust from leaking between a kneading vessel and a pair of rotors when kneading the kneading machine,

A piston housing respectively inserted into the shaft portion of the pair of rotors and fixed to the kneading vessel;

A piston rod interposed between the piston housing and the shaft portion of the rotor and slidably moved in the axial direction;

Pumping means connected to a hydraulic chamber formed between the piston housing and the piston rod;

And a packing which is located at the front end of the inner diameter of the piston housing and is pushed to the shaft section of the rotor by the front end surface of the piston rod.

Also according to the invention,

A check valve connected to an outlet of the pumping means to prevent a back flow of the fluid;

It is characterized in that it further comprises an accumulator which is installed in the pipe connecting the check valve and the hydraulic chamber to accumulate pressure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 5a is a block diagram of the packing pressurization device for preventing the dust on the rotor side of the pressure kneader according to the present invention, Figure 5b is a cross-sectional view seen from the line AA of Figure 5a, Figure 6a to operate the packing pressurization device of Figure 5a Hydraulic circuit diagram for the.

As shown in FIG. 5A, the packing 1 is assembled to prevent dust from leaking between the kneading vessel 10 and the rotor 12 when kneading the kneading vessel, and kneading the kneading material introduced into the kneading vessel 10. A piston housing 20 is cylindrically inserted into each shaft portion 12c of the pair of rotors 12, and the piston housing 20 carries the head bolt 30 on the side wall of the kneading vessel 10. It is fixedly installed.

An approximately cylindrical piston rod 40 is inserted between the piston housing 20 and the shaft portion 12c of the rotor 12 to push the packing 1 hydraulically, and the piston rod 40 is The inner surface of the piston housing 20 is provided to be slidable in the axial direction.

At the rear end of the piston housing 20, a head cover 50 is disposed to prevent the rear part of the piston rod 40 from being separated. The head cover 50 is fixed to the piston housing 20 by a head bolt 60. It is installed.

The packing 1 is inserted into the front end of the inner diameter of the piston housing 20, and the packing 1 is a stepped surface of the shaft portion of the rotor 12 by the pushing force of the piston rod 40 that is hydraulically pushed ( 12b).

The hydraulic chamber 42 is formed between the piston housing 20 and the piston rod 40, the hydraulic chamber 42 is connected to the hydraulic pump 70 through the conduit 46 as shown in FIG. have.

In this embodiment, the hydraulic pump 70 is configured as a hand pump that is manually operated, but the hydraulic pump 70 detects the pressure appearing in the pressure gauge 76 as shown in FIG. 6 and lowers it below the set pressure. The mask may be automatically operated and connected to an electrical detection circuit (not shown) to stop when the set pressure is reached.

In this embodiment, as shown in FIG. 6, a check valve 72 is installed at a discharge port of the hydraulic pump 70 to prevent a back flow of the fluid, and is connected to a pipe connecting the check valve 72 and the hydraulic chamber 42. The accumulator 74 is further included to accumulate the pressure of the fluid.

At this time, the check valve 60 plays a role in which the pressure accumulated in the accumulator 74 acts only on the hydraulic chamber 42 side.

Reference numerals 81, 82, and 83 are 'seals' for preventing fluid leakage.

The assembly of this embodiment configured as described above is performed as follows.

First, the pair of piston housing 20 is fixed to the side wall of the kneading vessel 10 by the head bolt 30, respectively.

Next, the packing 1 is inserted into the inner diameter of each piston housing 20, the piston rod 40 is inserted into the inner diameter of the piston housing 20, and then the head cover 50 is moved to the head bolt 60. Tighten.

Then, when the hydraulic chamber 42 is connected to the hydraulic pump 70 side pipeline 46, the assembly is completed.

In such a state, when the hydraulic pump 70 is automatically or manually driven, the hydraulic pressure acts on the hydraulic chamber 42 so that the piston rod 40 moves to the right in FIG. 5A, and the packing 1 is moved by this moving force. It is pushed to the cross section of the rotor 12.

At this time, a certain pressure is accumulated in the accumulator 74, and the pressure pushes the piston rod 40 with a constant force. At this time, the pressure value of the pressure gauge 76 is read and the pressure is accumulated. When the pressure appearing at the pressure gauge 76 falls below the set pressure, the hydraulic pump 70 is operated again to accumulate the pressure.

Therefore, even if the packing 1 is worn, a constant pressure continuously acts on the piston rod 40, and this pressure is transmitted to the packing 1 and pushed to the rotor 12 side, thereby preventing the leakage of dust. In addition, since the piston rod 40 is operated hydraulically, it is possible to push the packing 1 with a uniform force.

In addition, since only the head bolt 30 can be disassembled and replaced when the packing 1 is replaced, the exchange is convenient and the replacement time is shortened.

As described above, the packing pressurization device for preventing dust on the rotor side of the pressure kneader according to the present invention can push the packing by using a large force with a small force by using hydraulic pressure, and also push the packing uniformly, so that the force is easily adjusted Accurate.

In addition, it is not easy to adjust the extrusion force of the coil spring using a nut as in the prior art, it is easy to operate as a remote control because the hydraulic pump can be operated remotely.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

As described above, the packing pressurization device for preventing dust on the rotor side of the pressurized kneader according to the present invention can push the packing 1 with a large force with a small force by using hydraulic pressure, and the packing with a uniform hydraulic force. (1) is pushed, there is no fear of dust leakage even if the packing (1) is worn out, the force adjustment is easy and accurate, and remote control can effectively prevent dust leakage.

Claims (2)

In the device for preventing dust from leaking between the kneading vessel 10 and the pair of rotors 12 when kneading the kneader, A piston housing 20 inserted into the shaft portion 12c of the pair of rotors 12 in a cylindrical shape and fixed to the kneading vessel 10; A piston rod (40) interposed between the piston housing (20) and the shaft portion of the rotor (12) and slidably moved in an axial direction; Pumping means connected to the hydraulic chamber (42) formed between the piston housing (20) and the piston rod (40); Located in the front end of the inner diameter of the piston housing 20, characterized in that it comprises a packing (1) which is pushed to the shaft stepped surface 12b of the rotor 12 to the front end surface of the piston rod 40 Packing pressurization device for preventing dust on rotor side of pressurized kneader. The method of claim 1, A check valve 72 connected to the discharge port of the pumping means to prevent a back flow of the fluid; Packing pressurization device for preventing the dust of the rotor side of the pressure kneader, characterized in that it further comprises an accumulator (74) installed in the conduit connecting the check valve 72 and the hydraulic chamber 42 .

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