Kneading machine for producing mixed silicone rubber

Abstract

The utility model belongs to the technical field of mixed silicone rubber production, and discloses a kneading machine for mixed silicone rubber production, which comprises a storage bin, a feeding port is arranged at the top of the storage bin, the feeding port is communicated with the storage bin, a discharging port is arranged at the bottom of the storage bin, the discharging port is communicated with the storage bin, and an electromagnetic valve is arranged on the discharging port; the premixing assembly comprises a driving shaft which is vertically arranged and rotatably mounted in the storage bin, a plurality of stirring blades are mounted on the driving shaft, and the driving shaft is driven by a driving device; the conveying assembly comprises a conveying cylinder, the conveying cylinder is communicated with the discharging opening, a variable frequency motor is installed at one end of the conveying cylinder, a conveying auger is vertically and rotatably installed in the conveying cylinder, and an output shaft of the variable frequency motor is in transmission connection with the conveying auger; and a diversion port. According to the utility model, not only can raw material cakes be conveniently broken, but also continuous and uniform conveying of raw materials can be realized, so that the mixing efficiency and consistency are improved.

Description

Technical Field

[0001] This utility model relates to the field of silicone rubber compounding technology, and in particular to a kneader for silicone rubber compounding production. Background Technology

[0002] Kneaders are the core equipment in silicone rubber production. They use high-intensity shearing, extrusion and folding to uniformly mix raw rubber (methyl vinyl silicone rubber), silica, structure control agents and other raw materials, and achieve physical / chemical modification of the polymer chains.

[0003] Existing kneaders used in the production of silicone rubber compounding mostly employ a single screw conveyor or gravity feeding method, which has the following problems:

[0004] 1) Poor uniformity: Traditional screw conveyors are prone to causing raw materials to accumulate or disperse unevenly, affecting the mixing quality;

[0005] 2) Low efficiency: There is a lot of manual intervention and continuous feeding cannot be achieved. Therefore, we propose a kneader for the production of silicone rubber. Utility Model Content

[0006] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0007] Specifically, the technical problem to be solved by this utility model is to provide a kneader for producing mixed silicone rubber, so as to solve the current technical problems of poor uniformity and low efficiency.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] A kneader for producing compounded silicone rubber includes a storage silo, a feeding port installed on the top of the storage silo and connected to the storage silo, a discharging port installed at the bottom of the storage silo and connected to the storage silo, and a solenoid valve installed on the discharging port.

[0010] A premixing component, the premixing component including a drive shaft that is vertically arranged and rotatably installed in the storage silo, a plurality of stirring blades being installed on the drive shaft, and the drive shaft being driven by a drive device;

[0011] A conveying assembly includes a conveying cylinder connected to the discharge port. A variable frequency motor is installed at one end of the conveying cylinder. A conveying auger is vertically arranged and rotatably installed inside the conveying cylinder. The output shaft of the variable frequency motor is connected to the conveying auger in a transmission manner.

[0012] A flow guide is installed at the end of the conveying cylinder away from the variable frequency motor, and the flow guide is connected to the conveying cylinder;

[0013] A sealing element is installed at the end of the flow guide port away from the conveying cylinder, and the flow guide port is connected to the raw material inlet of the kneader through the sealing element.

[0014] As an improved technical solution, the driving device is a drive motor, which is installed on the top of the storage silo, and the output shaft of the drive motor is connected to the drive shaft for transmission.

[0015] As an improved technical solution, the stirring blades are of an interlaced blade structure.

[0016] As an improved technical solution, the conveying cylinder is equipped with a fixing support for fixation, and the fixing support is symmetrically arranged along the axial direction of the conveying cylinder.

[0017] As an improved technical solution, the conveying auger is a double-helix variable pitch design, with the pitch of the first half of the conveying auger being greater than that of the second half.

[0018] As an improved technical solution, the inner wall of the flow guide is coated with a polytetrafluoroethylene coating.

[0019] As an improved technical solution, the sealing element is a pneumatic sealing ring.

[0020] As an improved technical solution, a connecting plate is provided between the bottom of the storage silo and the conveying cylinder, and a PLC controller is installed on the connecting plate. The PLC controller is used to control the start and stop of the solenoid valve, the drive motor and the variable frequency motor.

[0021] After adopting the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, the variable frequency motor is started and the solenoid valve is opened by the PLC controller. At this time, the premixed raw materials enter the conveying cylinder through the inner cavity of the feeding port. At the same time, the output shaft of the variable frequency motor drives the conveying auger to rotate and convey the premixed raw materials. Then, the materials enter the raw material inlet of the kneader through the inner cavity of the guide port to achieve continuous and uniform conveying of raw materials, thereby facilitating continuous and uniform conveying of raw materials and improving the efficiency and consistency of mixing.

[0023] 2. In this utility model, an appropriate amount of raw material for compounding silicone rubber is injected into the storage silo through the feeding port, and the solenoid valve is in the closed state. Then, the drive motor is started by the PLC controller. At this time, the output shaft of the drive motor drives the drive shaft to rotate, and the drive shaft drives the stirring blade to stir and premix. At the same time, the stirring blade breaks up the lumps in the raw material, thereby facilitating the stirring and premixing of the raw material and breaking up the lumps in the raw material, thus facilitating the continuous and uniform delivery of the raw material.

[0024] 3. This utility model, by setting a pneumatic sealing ring at the connection between the guide port and the raw material inlet of the kneader, can achieve a sealed connection between the guide port and the raw material inlet of the kneader, while preventing dust from escaping. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0026] Figure 1 This is a schematic diagram of the overall main structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the separation structure of the flow guide and the sealing element of this utility model.

[0028] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0029] Figure 4 This is a schematic diagram of the premixed component structure of this utility model.

[0030] Figure 5 This is a schematic diagram of the conveying component structure of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] In the diagram: 1. Storage silo; 101. Feed inlet; 102. Discharge outlet; 103. Solenoid valve; 2. Drive motor; 3. Drive shaft; 4. Agitator blade; 5. Conveying cylinder; 6. Fixed support; 7. Variable frequency motor; 8. Conveying auger; 9. Guide port; 901. Polytetrafluoroethylene coating; 10. Seal; 11. PLC controller. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0036] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0037] Reference Figures 1-5 A kneader for producing silicone rubber is provided. The kneader for producing silicone rubber includes a storage silo 1. A feeding port 101 is installed on the top of the storage silo 1 and is connected to the storage silo 1. A discharging port 102 is installed at the bottom of the storage silo 1 and is connected to the storage silo 1. A solenoid valve 103 is installed on the discharging port 102.

[0038] The premixing component includes a drive shaft 3 vertically arranged and rotatably installed in the storage silo 1. Several stirring blades 4 are installed on the drive shaft 3. The drive shaft 3 is driven by a drive device, which is a drive motor 2. The drive motor 2 is installed on the top of the storage silo 1, and the output shaft of the drive motor 2 is connected to the drive shaft 3. The stirring blades 4 have an interlaced blade structure. In application, the drive motor 2 is started by using the PLC controller 11. At this time, the output shaft of the drive motor 2 drives the drive shaft 3 to rotate. The drive shaft 3 drives the stirring blades 4 to stir and premix. At the same time, the stirring blades 4 break up the lumps in the raw materials, so as to facilitate the stirring and premixing of the raw materials and break up the lumps in the raw materials.

[0039] The conveying assembly includes a conveying cylinder 5, on which a fixing support 6 is installed. The fixing support 6 is symmetrically arranged along the axial direction of the conveying cylinder 5. The conveying cylinder 5 is connected to the discharge port 102. A variable frequency motor 7 is installed at one end of the conveying cylinder 5. A conveying auger 8 is vertically arranged and rotatably installed inside the conveying cylinder 5. The output shaft of the variable frequency motor 7 is connected to the conveying auger 8. The conveying auger 8 has a double-helix variable pitch design. The pitch of the first half of the conveying auger 8 is greater than that of the second half. In application, the variable frequency motor 7 is started and the solenoid valve 103 is opened by the PLC controller 11. At this time, the premixed raw material enters the conveying cylinder 5 through the inner cavity of the discharge port 102. At the same time, the output shaft of the variable frequency motor 7 drives the conveying auger 8 to rotate and convey the premixed raw material so as to achieve continuous and uniform conveying of the raw material.

[0040] The guide port 9 is installed at the end of the conveying cylinder 5 away from the variable frequency motor 7, and the guide port 9 is connected to the conveying cylinder 5. The inner wall of the guide port 9 is coated with polytetrafluoroethylene coating 901 to extend the service life of the guide port 9.

[0041] The sealing element 10 is installed at the end of the guide port 9 away from the conveying cylinder 5, and the guide port 9 is connected to the raw material inlet of the kneader through the sealing element 10. The sealing element 10 is a pneumatic sealing ring to ensure the sealing of the connection and prevent dust from escaping.

[0042] Reference Figure 1 and Figure 2 A connecting plate is provided between the bottom of the storage bin 1 and the conveying cylinder 5. A PLC controller 11 is installed on the connecting plate. The PLC controller 11 is used to control the start and stop of the solenoid valve 103, the drive motor 2 and the frequency converter 7, so as to facilitate intelligent control.

[0043] In actual use, an appropriate amount of mixed silicone rubber production raw material is injected into the storage bin 1 through the feeding port 101, and the solenoid valve 103 is in the closed state. Then, the drive motor 2 is started by the PLC controller 11. At this time, the output shaft of the drive motor 2 drives the drive shaft 3 to rotate. The drive shaft 3 drives the stirring blade 4 to stir and premix. At the same time, the stirring blade 4 breaks up the lumps in the raw material, which facilitates the stirring and premixing of the raw material and breaks up the lumps in the raw material, thereby facilitating the continuous and uniform delivery of the raw material.

[0044] Then, the PLC controller 11 starts the frequency converter motor 7 and opens the solenoid valve 103. At this time, the premixed raw materials enter the conveying cylinder 5 through the inner cavity of the feeding port 102. At the same time, the output shaft of the frequency converter motor 7 drives the conveying auger 8 to rotate and convey the premixed raw materials. Then, the materials enter the raw material inlet of the kneader through the inner cavity of the guide port 9 to achieve continuous and uniform conveying of raw materials, thereby facilitating continuous and uniform conveying of raw materials and improving the efficiency and consistency of mixing. This device not only facilitates the breaking up of raw material agglomerates, but also enables continuous and uniform conveying of raw materials to improve the efficiency and consistency of mixing.

[0045] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A kneader for producing compounded silicone rubber, characterized in that: include: A storage bin (1) is provided with a feeding port (101) installed on the top of the storage bin (1) and the feeding port (101) is connected to the storage bin (1). A discharging port (102) is provided at the bottom of the storage bin (1) and the discharging port (102) is connected to the storage bin (1). A solenoid valve (103) is installed on the discharging port (102). The premixing component includes a drive shaft (3) that is vertically arranged and rotatably installed in the storage bin (1), and a plurality of stirring blades (4) are installed on the drive shaft (3). The drive shaft (3) is driven by a drive device. The conveying assembly includes a conveying cylinder (5), which is connected to the discharge port (102). A variable frequency motor (7) is installed on one end of the conveying cylinder (5), and a conveying auger (8) is vertically arranged and rotatably installed inside the conveying cylinder (5). The output shaft of the variable frequency motor (7) is connected to the conveying auger (8) in a transmission connection. A guide port (9) is installed at one end of the conveying cylinder (5) away from the variable frequency motor (7), and the guide port (9) is connected to the conveying cylinder (5); A sealing element (10) is installed at the end of the guide port (9) away from the conveying cylinder (5), and the guide port (9) is connected to the raw material inlet of the kneader through the sealing element (10).

2. The kneader for producing compounded silicone rubber according to claim 1, characterized in that: The driving device is a drive motor (2), which is installed on the top of the storage bin (1), and the output shaft of the drive motor (2) is connected to the drive shaft (3) for transmission.

3. The kneader for producing compounded silicone rubber according to claim 1, characterized in that: The stirring blades (4) have an interlaced blade structure.

4. The kneader for producing compounded silicone rubber according to claim 1, characterized in that: The conveying cylinder (5) is equipped with a fixing support (6) for fixing, and the fixing support (6) is symmetrically arranged along the axial direction of the conveying cylinder (5).

5. The kneader for producing compounded silicone rubber according to claim 1, characterized in that: The conveying auger (8) is a double-helix variable pitch design, with the pitch of the first half of the conveying auger (8) being greater than that of the second half.

6. The kneader for producing compounded silicone rubber according to claim 1, characterized in that: The inner wall of the flow guide (9) is coated with a polytetrafluoroethylene coating (901).

7. The kneader for producing compounded silicone rubber according to claim 1, characterized in that: The sealing element (10) is a pneumatic sealing ring.

8. The kneader for producing compounded silicone rubber according to any one of claims 1-7, characterized in that: A connecting plate is provided between the bottom of the storage bin (1) and the conveying cylinder (5). A PLC controller (11) is installed on the connecting plate. The PLC controller (11) is used to control the start and stop of the solenoid valve (103), the drive motor (2) and the frequency converter motor (7).

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