Preparation method and preparation device of novel high-strength sealing material

Abstract

The invention relates to the field of sealing material preparation, and discloses a novel high-strength sealing material preparation method and a novel high-strength sealing material preparation device, the novel high-strength sealing material comprises 10-15% of paper pulp fiber, 70-80% of inorganic filler, 5-10% of latex, 3-5% of a rubber auxiliary agent, and 2-3% of a titanate reinforcing agent. By adding the titanate reinforcing agent, the strength of the material is improved, the preparation process is simplified, multiple blanks can be vulcanized at the same time, and the production efficiency is improved. In addition, the forming frame matched with the calendering vulcanizing machine is adopted for containing blanks, automatic feeding is completed through the conveying assembly, the vulcanized sealing material is separated from the bottom plate through the separating assembly, the situation that the vulcanized sealing material is attached to a workbench under the inertia effect is avoided, and the vulcanized sealing material can be conveniently taken out.

Description

Technical Field

[0001] The present invention relates to the field of preparation of sealing materials, and in particular to a method for preparing a new type of high-strength sealing material and a preparation device therefor. Background Art

[0002] Sealing materials are important elements indispensable in industrial production and daily life. They are mainly used to prevent gas or liquid from leaking from one space to another. Among sealing materials, sealing pads used for planar sealing are divided into two major categories, calendered plates and extracted plates, according to different production processes, and are also divided into two major categories, asbestos plates and non-asbestos plates, according to whether asbestos is contained in the raw materials. Among them, non-asbestos sealing materials are widely used because of their better environmental protection effects.

[0003] Patent Publication No. CN1423074A provides a process for preparing an oil-resistant sealing plate by using a new type of environmentally friendly material, special composite cotton, to replace asbestos. The oil-resistant sealing plate is a modified composite material with a film having strong affinity for rubber and plastic sprayed on its surface as a substitute for asbestos. And in the extraction process of the preparation process, a flow pulp extractor with a mesh size of 250-360 meshes is adopted.

[0004] However, the process in the above patent involves multiple steps, including mixing, flying, spraying, drying, and pulverizing, etc. The process is complex, the production cycle is long, and the production efficiency is low.

[0005] Patent Publication No. CN1847355A provides an asbestos-free fiber extraction sealing material and a preparation method therefor. The composition and ratio of each component of the material are as follows: fiber 10-70wt%, filler 30-80wt%, binder 1-10wt%, latex 5-20wt%, and compounding agent 4-10wt%. Among them, the latex is selected from synthetic latex and natural latex, the binder is a polymer binder resin or a combination thereof, the filler is selected from graphite powder, bentonite, etc., and its particle size is above 120 meshes. The fiber includes mineral wool fibers treated at a high temperature of more than 1000 degrees, shorter glass and ceramic fibers, etc.

[0006] However, more than 5 kinds of fibers are used simultaneously in the above patent, including mineral wool fibers, chopped glass fibers, ceramic fibers, aramid fibers, polyacrylonitrile fibers, polyamide fibers, cellulose fibers, etc. The mixing and treatment processes of multiple fibers are complex, increasing the production difficulty and cost, and the mixed use of multiple fibers results in a decrease in the strength and heat resistance performance of the material.

[0007] In addition, in the prior art, a calender vulcanizer is used to vulcanize the material during the preparation of the sealing material. Since the sealing material is under great pressure during vulcanization, it is easy to stick to the working table of the calender vulcanizer under the action of inertia after vulcanization, which is not convenient to take out. Summary of the Invention

[0008] The present invention aims to solve the technical problems raised in the above-mentioned background art, and provides a preparation method and a preparation device for a new type of high-strength sealing material.

[0009] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0010] A preparation method for a new type of high-strength sealing material, which is composed of 10-15% pulp fiber, 70-80% inorganic filler, 5-10% latex, 3-5% rubber auxiliary agent, and 2-3% titanate enhancer, includes the following steps:

[0011] S1: Pulp fiber is beaten to fully separate its fibers, improving the flexibility and binding force of the fibers; the inorganic filler is subjected to surface modification treatment to improve its compatibility and dispersibility with the pulp fiber.

[0012] S2: The pretreated pulp fiber and inorganic filler are added to a blender, an appropriate amount of water is added, and they are stirred evenly to form a preliminary water suspension.

[0013] S3: Under the stirring state, latex, rubber auxiliary agent, and titanate enhancer are added in sequence, and stirring is continued evenly to make each component fully mixed.

[0014] S4: The uniformly mixed slurry is poured into a paper machine extractor, and the slurry is evenly distributed on a forming frame through the extractor to form a thin wet blank.

[0015] S5: The wet blank is dehydrated, and then sent to a drying oven for drying. The drying temperature is controlled at 80-100°C, and the drying time is 2-3 hours, so that the moisture content of the wet blank is reduced to less than 10%.

[0016] S6: The dried blank is sent to a calender vulcanizer for calender vulcanization treatment. The vulcanization temperature is controlled at 130-150°C, and the vulcanization time is 10-15 minutes, so that the material is fully vulcanized to form a high-strength sealing material.

[0017] Preferably, it includes a calender vulcanizer and a forming frame;

[0018] The calender vulcanizer includes a main frame, a workbench, a conveying component, a conveyor belt, and a separating component;

[0019] The workbench is arranged on the top of the main frame, and enclosing plates are installed on both the left and right sides of the workbench;

[0020] The conveying component is arranged above the workbench;

[0021] The conveyor belt is installed on the front of the main frame;

[0022] The separation component is arranged inside the main frame.

[0023] Preferably, the conveying component includes a first push plate, a cavity, a second push plate, and a slide rail;

[0024] The first push plate and the second push plate are fixedly connected by a connecting rod. An activity door is arranged on the front surface of the second push plate. The distance between the first push plate and the second push plate is the same as the length of the workbench;

[0025] The cavity is opened on the outer wall of the first push plate;

[0026] The slide rail is installed on the top of the main frame. The slider part of the slide rail is fixedly connected with the first push plate.

[0027] Preferably, the separation component includes an ejecting block, an elliptical rotating block, a rotating shaft, a connecting frame, and a spring;

[0028] The ejecting block is movably connected inside the main frame. The top end of the ejecting block penetrates above the workbench. The position of the ejecting block is the same as that of the cavity;

[0029] The rotating shaft is rotatably connected inside the main frame. The elliptical rotating block is fixedly connected to the outer wall of the rotating shaft;

[0030] The connecting frame is fixedly connected to the bottom of the ejecting block. The bottom of the connecting frame is lapped with the elliptical rotating block;

[0031] The spring is fixedly connected to the bottom of the connecting frame. The bottom end of the spring is fixedly connected to the inner wall of the main frame.

[0032] Preferably, a baffle is arranged on the front surface of the workbench. The bottom end of the baffle penetrates inside the main frame and is movably connected therebetween. A threaded cylinder is fixedly connected to the outer wall of the baffle. An electric screw rod is installed inside the main frame. The electric screw rod is in threaded connection with the threaded cylinder.

[0033] Preferably, the forming frame includes a bottom plate, a rotating rod, a top rod, a rubber sheet, a jack, a plug, and a fence;

[0034] The fence is movably connected to the left and right sides of the top surface of the bottom plate. The rotating rod is rotatably connected to the front and rear ends of the fence;

[0035] The top rod is fixedly connected between the front and rear two rotating rods;

[0036] A through hole is opened at the center of the bottom plate. The rubber sheet is installed on the top of the through hole;

[0037] The jacks are opened at the rear side and the right side of the bottom plate. The plugs are fixedly connected to the front side and the left side of the bottom plate.

[0038] The beneficial effects of the present invention:

[0039] 1. The present invention improves the strength of the material by adding a titanate enhancer and simplifies the preparation process. It can vulcanize multiple blanks simultaneously, thus improving the production efficiency.

[0040] 2. The present invention uses a forming frame that cooperates with the calendering vulcanizing machine to hold the blanks, completes automatic feeding through a conveying component, and separates the vulcanized sealing material from the bottom plate through a separating component, avoiding the sealing material sticking to the workbench under the action of inertia after vulcanization and facilitating the removal of the vulcanized sealing material. Description of the Drawings

[0041] Figure 1 is the schematic diagram of the overall structure of the main frame of the preparation method and device for the new type of high-strength sealing material;

[0042] Figure 2 is the schematic diagram of the internal structure of the main frame of the preparation method and device for the new type of high-strength sealing material;

[0043] Figure 3 is the schematic diagram of the structure of the separating component of the preparation method and device for the new type of high-strength sealing material;

[0044] Figure 4 is the schematic diagram of the structure of the forming frame of the preparation method and device for the new type of high-strength sealing material.

[0045] Description of the reference numerals: 1, main frame; 2, workbench; 21, baffle; 22, threaded cylinder; 23, electric screw rod; 3, conveying component; 31, first push plate; 32, cavity; 33, second push plate; 34, slide rail; 4, conveyor belt; 5, forming frame; 51, bottom plate; 52, rotating rod; 53, ejector rod; 54, rubber sheet; 55, jack; 56, plug; 57, fence; 6, separating component; 61, ejecting block; 62, elliptical rotating block; 63, rotating shaft; 64, connecting frame; 65, spring. Detailed Embodiments

[0046] The following will clearly and completely describe the concept and technical effects generated by the present invention in combination with embodiments to fully understand the purpose, features, and effects of the present invention.

[0047] Embodiment 1

[0048] The present application designs a preparation method for a new type of high-strength sealing material. The material is composed of 10 - 15% pulp fiber, 70 - 80% inorganic filler, 5 - 10% latex, 3 - 5% rubber additive, and 2 - 3% titanate enhancer, and includes the following steps:

[0049] S1: Pulp fibers are beaten to fully separate the fibers and improve the flexibility and bonding strength of the fibers; inorganic fillers are surface-modified to improve their compatibility and dispersibility with pulp fibers.

[0050] S2: The pretreated pulp fibers and inorganic fillers are added to a blender, an appropriate amount of water is added, and they are stirred evenly to form a preliminary aqueous suspension.

[0051] S3: Under the stirring state, latex, rubber additives, and titanate reinforcing agents are added in sequence, and stirring is continued evenly to fully mix all components.

[0052] S4: The uniformly mixed slurry is poured into a paper machine sheet former, and the slurry is evenly distributed on the forming frame 5 through the sheet former to form a thin wet blank.

[0053] S5: The wet blank is dehydrated and then sent to a drying oven for drying. The shape of the wet blank is fixed by the protection of the rotating rod 52 and the fence 57 to prevent deformation of the wet blank during drying. The drying temperature is controlled at 80 - 100 °C, and the drying time is 2 - 3 hours to reduce the moisture content of the wet blank to less than 10%.

[0054] S6: The dried blank is sent to a calendering and vulcanizing machine for calendering and vulcanizing treatment. The blank is vulcanized on the bottom plate 51 throughout the process to avoid direct contact between the blank and the workbench 2. At the same time, the plane formed by multiple bottom plates 51 can support the blank, enabling multiple blanks to maintain consistency during the vulcanization process. The vulcanization temperature is controlled at 130 - 150 °C, and the vulcanization time is 10 - 15 minutes to fully vulcanize the material and form a high-strength sealing material.

[0055] Example 2

[0056] As shown in the Figure 1 accompanying figure, a device for preparing a new type of high-strength sealing material includes a calendering and vulcanizing machine and a forming frame 5;

[0057] The calendering and vulcanizing machine includes a main frame 1, a workbench 2, a conveying component 3, a conveyor belt 4, and a separating component 6;

[0058] The workbench 2 is arranged on the top of the main frame 1, and guard plates are installed on both the left and right sides of the workbench 2;

[0059] The conveying component 3 is arranged above the workbench 2;

[0060] The conveyor belt 4 is installed on the front of the main frame 1;

[0061] The separating component 6 is arranged inside the main frame 1.

[0062] As shown in the Figure 2As shown, the conveying component 3 includes a first push plate 31, a cavity 32, a second push plate 33, and a slide rail 34;

[0063] The first push plate 31 and the second push plate 33 are fixedly connected by a connecting rod. An activity door is arranged on the front surface of the second push plate 33 and is driven by a motor. The distance between the first push plate 31 and the second push plate 33 is the same as the length of the workbench 2. The bottom surfaces of the first push plate 31 and the second push plate 33 are at the same height as the top surface of the bottom plate 51;

[0064] The cavity 32 is opened on the outer wall of the first push plate 31;

[0065] The slide rail 34 is installed on the top of the main frame 1, and the slider part of the slide rail 34 is fixedly connected to the first push plate 31.

[0066] As shown in the attachment Figure 3 As shown, the separation component 6 includes an ejecting block 61, an elliptical rotating block 62, a rotating shaft 63, a connecting frame 64, and a spring 65;

[0067] The ejecting block 61 is movably connected inside the main frame 1. The top end of the ejecting block 61 penetrates above the workbench 2, and the position of the ejecting block 61 is the same as that of the cavity 32;

[0068] The rotating shaft 63 is rotatably connected inside the main frame 1. The elliptical rotating block 62 is fixedly connected to the outer wall of the rotating shaft 63, and the rotating shaft 63 is driven by a reduction motor;

[0069] The connecting frame 64 is fixedly connected to the bottom of the ejecting block 61, and the bottom of the connecting frame 64 is lapped with the elliptical rotating block 62;

[0070] The spring 65 is fixedly connected to the bottom of the connecting frame 64, and the bottom end of the spring 65 is fixedly connected to the inner wall of the main frame 1.

[0071] A baffle 21 is arranged on the front surface of the workbench 2. The bottom end of the baffle 21 penetrates inside the main frame 1 and is movably connected therebetween. A threaded cylinder 22 is fixedly connected to the outer wall of the baffle 21, and an electric lead screw 23 is installed inside the main frame 1. The electric lead screw 23 is in threaded connection with the threaded cylinder 22.

[0072] As shown in the attachment Figure 4 As shown, the forming frame 5 includes a bottom plate 51, a rotating rod 52, a top rod 53, a rubber sheet 54, a jack 55, a plug 56, and a fence 57;

[0073] The fence 57 is movably connected to the left and right sides of the top surface of the bottom plate 51, and the rotating rod 52 is rotatably connected to the front and rear ends of the fence 57;

[0074] The top rod 53 is fixedly connected between the front and rear two rotating rods 52;

[0075] A through hole is opened at the center of the bottom plate 51, and the rubber sheet 54 is installed on the top of the through hole;

[0076] The jack 55 is opened at the rear side and the right side of the bottom plate 51, and the insertion block 56 is fixedly connected to the front side and the left side of the bottom plate 51.

[0077] During the vulcanization step, first, multiple dried blanks together with the forming frame 5 are arranged neatly on the conveyor belt 4. The multiple forming frames 5 are connected through the insertion block 56 and the jack 55. Then, the conveyor belt 4 is started to convey the forming frame 5 to the position of the second push plate 33. Subsequently, the motor drives the movable door to open, and the forming frame 5 continues to be conveyed by the conveyor belt 4 to between the second push plate 33 and the first push plate 31. Then, the movable door is closed, and the slider part of the slide rail 34 drives the first push plate 31 and the second push plate 33 to move. The second push plate 33 pushes the forming frame 5 onto the workbench 2. After the forming frame 5 is in place, the rotating shaft 63 drives the elliptical rotating block 62 to rotate. The elliptical rotating block 62 jacks up the connecting frame 64, and the ejecting block 61 ejects above the workbench 2 and inserts into the through hole at the center of the bottom plate 51. The ejecting block 61 bends the rubber sheet 54 upward. At the same time, the ejecting block 61 jacks up the blank and pushes the ejecting rod 53 upward. The ejecting rod 53 drives the rotating rod 52 to rotate, so as to open the rotating rod 52 to both sides, avoiding the rotating rod 52 being stuck by the ejecting block 61. Then, the slide rail 34 drives the first push plate 31 to move. The first push plate 31 pushes the fence 57 to move outward. The fence 57 drives the rotating rod 52 and the ejecting rod 53 to move outward. Through the cavity 32, it is prevented that the first push plate 31 is stuck by the ejecting block 61, thus completing the work of removing the frame. Then, the ejecting block 61 resets, and the blank falls back onto the bottom plate 51. Subsequently, the vulcanization work is carried out. The bottom of the blank is protected by the bottom plate 51 to prevent the blank from sticking to the workbench 2. After the vulcanization is completed, the blank is separated from the bottom plate 51 by the ejecting block 61 again, so as to facilitate the removal of the vulcanized sealing material.

[0078] The above embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts all belong to the scope protected by the present invention.

Claims

1. A method for preparing a new type of high-strength sealing material, the material is composed of 10-15% pulp fiber, 70-80% inorganic filler, 5-10% latex, 3-5% rubber additive, and 2-3% titanate reinforcing agent, characterized in that: The following steps are involved: S1: The pulp fibers are beaten to fully separate the fibers and improve the flexibility and bonding strength of the fibers; the inorganic fillers are surface modified to improve their compatibility and dispersibility with the pulp fibers. S2: Add the pretreated pulp fiber and inorganic filler into a mixer, add an appropriate amount of water, and stir evenly to form a preliminary water suspension. S3: While stirring, add latex, rubber additives and titanate reinforcing agent in sequence, and continue to stir evenly to fully mix the components. S4: pouring the uniformly mixed slurry into the paper machine copying device, and the copying device evenly distributes the slurry on the forming frame (5) to form a thin sheet of wet blank. S5: Dehydrate the wet blank and then send it into a drying oven for drying. The drying temperature is controlled to be 80-100° C. and the drying time is 2-3 hours to reduce the moisture content of the wet blank to below 10%. S6: The dried blank is sent to a calendering vulcanizing machine for calendering vulcanization treatment, and the vulcanization temperature is controlled to be 130-150° C. and the vulcanization time is 10-15 minutes, so that the material is fully vulcanized to form a high-strength sealing material.

2. A novel high-strength sealing material preparation device according to claim 1, characterized in that: It includes a calendering vulcanizing machine and a molding frame (5); The calendering vulcanizing machine comprises a main frame (1), a workbench (2), a conveying component (3), a conveying belt (4), and a separation component (6); The workbench (2) is arranged on the top of the main frame (1), and enclosures are installed on both the left and right sides of the workbench (2); The conveying assembly (3) is arranged above the workbench (2); The conveyor belt (4) is installed on the front side of the main frame (1); The separation component (6) is arranged inside the main frame (1).

3. A novel high-strength sealing material preparation device according to claim 2, characterized in that: The conveying assembly (3) comprises a push plate 1 (31), a cavity (32), a push plate 2 (33), and a slide rail (34); The push plate 1 (31) and the push plate 2 (33) are fixedly connected by a connecting rod, a movable door is provided on the front of the push plate 2 (33), and the distance between the push plate 1 (31) and the push plate 2 (33) is the same as the length of the workbench (2); The cavity (32) is formed on the outer wall of the push plate (31); The slide rail (34) is installed on the top of the main frame (1), and the slider part of the slide rail (34) is fixedly connected to the push plate (31).

4. A novel high-strength sealing material preparation device according to claim 3, characterized in that: The separation assembly (6) comprises an ejection block (61), an elliptical rotating block (62), a rotating shaft (63), a connecting frame (64), and a spring (65); The ejector block (61) is movably connected inside the main frame (1), the top end of the ejector block (61) penetrates above the workbench (2), and the ejector block (61) is at the same position as the cavity (32); The rotating shaft (63) is rotatably connected to the inside of the main frame (1), and the elliptical rotating block (62) is fixedly connected to the outer wall of the rotating shaft (63); The connecting frame (64) is fixedly connected to the bottom of the ejection block (61), and the bottom of the connecting frame (64) overlaps the elliptical rotating block (62); The spring (65) is fixedly connected to the bottom of the connecting frame (64), and the bottom end of the spring (65) is fixedly connected to the inner wall of the main frame (1).

5. A novel high-strength sealing material preparation device according to claim 2, characterized in that: A baffle (21) is arranged on the front of the workbench (2), the bottom end of the baffle (21) penetrates into the interior of the main frame (1) and is movably connected thereto, a threaded barrel (22) is fixedly connected to the outer wall of the baffle (21), an electric screw (23) is installed inside the main frame (1), and the electric screw (23) is threadedly connected to the threaded barrel (22).

6. A novel high-strength sealing material preparation device according to claim 2, characterized in that: The molding frame (5) comprises a bottom plate (51), a rotating rod (52), a top rod (53), a rubber sheet (54), a plug hole (55), an insert block (56), and a fence (57); The fence (57) is movably connected to the left and right sides of the top surface of the bottom plate (51), and the rotating rod (52) is rotatably connected to the front and rear ends of the fence; The top rod (53) is fixedly connected between the front and rear rotating rods (52); A through hole is provided at the center of the bottom plate (51), and the rubber sheet (54) is installed on the top of the through hole; The insertion hole (55) is opened on the rear side and the right side of the bottom plate (51), and the insertion block (56) is fixedly connected to the front side and the left side of the bottom plate (51).

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