Skirt blocking device of vacuum belt dehydrator

Abstract

The invention belongs to the technical field of vacuum belt dehydrators, and particularly relates to a vacuum belt dehydrator skirt blocking device which comprises a main support assembly, the main support assembly comprises a transverse support and a longitudinal support, and the main support assembly is a wear-resistant lining plate assembly made of a carbon steel lining plastic anti-corrosion material and matched with an ultra-high density polyethylene wear-resistant layer. The whole body is designed according to the maintenance cycle of 3-5 years, and the service life is far longer than the service life of 1-2 years of a traditional rubber skirt; the reinforcing rib plates enhance the structural strength of the support, reduce deformation abrasion in operation, and greatly reduce replacement frequency and maintenance cost. A long elliptical adjusting hole of the transverse support can adjust the left-right position, a height adjusting groove of the longitudinal support is matched with an adjusting sliding block to achieve height adjustment, fixing is achieved through a locking bolt, and the vacuum belt dehydrator can be accurately matched with vacuum belt dehydrators of different specifications; the arc-shaped guide face guides the filter cloth to make stable contact, it is ensured that the ultra-high-density polyethylene wear-resisting layer is tightly attached to the filter cloth, slurry is effectively prevented from splashing out or crossing an adhesive tape to enter a vacuum box, and the sealing reliability is improved.

Description

Technical Field

[0001] This invention relates to the field of vacuum belt dewatering machine technology, and in particular to a skirt-side material blocking device for a vacuum belt dewatering machine. Background Technology

[0002] Vacuum belt dewatering machines are widely used in desulfurization systems of various thermal power plants and are key large-scale operating equipment in these systems. During routine maintenance, most of the original vacuum belt dewatering machines used a rubber skirt bonding design, primarily to form a dike to prevent gypsum slurry leakage. However, during operation, the rubber is in prolonged contact with the gypsum slurry, leading to aging, detachment, and cracking over time. This is especially problematic in summer when operating at high ambient temperatures, making detachment particularly likely. If not detected promptly, the detached skirt can become entangled in the drive roller and filter cloth of the vacuum belt dewatering machine, causing serious accidents such as broken roller shafts and folded or torn filter cloth.

[0003] In actual operation, many problems have been exposed: the rubber material is easily corroded and aged due to long-term contact with high-concentration gypsum slurry, especially in the high temperature environment of summer, the aging rate is accelerated, and it needs to be replaced every 1-2 years, which is far less than the service life of the belt of more than 6 years; the rubber skirt is fixed by adhesive, and it is very easy to fall off due to thermal expansion and contraction and slurry soaking. After the fallen skirt is rolled into the drive roller or filter cloth, it will cause serious equipment accidents such as roller shaft breakage and filter cloth tearing; the repair process is complicated, requiring multiple processes such as disassembling the filter cloth, drying the belt, grinding and cleaning, vulcanizing and bonding; therefore, we have proposed a skirt blocking device for vacuum belt dewatering machine. Summary of the Invention

[0004] The purpose of this invention is to provide a skirt-side material blocking device for a vacuum belt dewatering machine, which solves the existing problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A skirt-side baffle device for a vacuum belt dewatering machine includes a main support assembly. The main support assembly includes a transverse support and a longitudinal support. The transverse support and the longitudinal support are vertically and fixedly connected. The transverse support has multiple elongated elliptical adjustment holes. The main support assembly is connected to the frame of the vacuum belt dewatering machine through fixing bolts passing through the elongated elliptical adjustment holes.

[0007] Preferably, a height adjustment groove is provided on the inner side of the longitudinal support, and an adjustment slider is slidably installed on the inner side of the height adjustment groove. A locking bolt is threaded on the adjustment slider, and one end of the locking bolt abuts against the longitudinal support.

[0008] Preferably, a baffle support plate is fixedly installed on one side of the adjusting slider, and a buffer pad is fixedly installed on one side of the baffle support plate. The buffer pad is made of nitrile rubber.

[0009] Preferably, a liner fixing frame is fixedly installed on the other side of the material blocking support plate, and a wear-resistant liner assembly is provided on the inner side of the liner fixing frame. The wear-resistant liner assembly includes a base plate and an ultra-high density polyethylene wear-resistant layer, and the ultra-high density polyethylene wear-resistant layer is fixedly installed on the outer side of the base plate.

[0010] Preferably, the outer side of the liner fixing frame is threaded with multiple liner fixing bolts, which pass through the liner fixing frame and are threadedly connected to the base plate. The inner side of the liner fixing frame is provided with a positioning groove, and the edge of the base plate is provided with a positioning protrusion that matches the positioning groove.

[0011] Preferably, a reinforcing rib is fixedly installed at the bottom of the transverse support, one side of the reinforcing rib is fixedly connected to the longitudinal support, and the main support assembly is made of carbon steel lined with plastic anti-corrosion material.

[0012] Preferably, the outer side of the ultra-high density polyethylene wear-resistant layer is provided with an arc-shaped guide surface, and the ultra-high density polyethylene wear-resistant layer is in contact with the filter cloth of the vacuum belt dewatering machine, but not in contact with the tape.

[0013] Preferably, a splash guard is fixedly installed on the top of the material blocking support plate, the splash guard is at a 120° angle to the material blocking support plate, and the splash guard is made of PP plastic.

[0014] Preferably, the bottom end of the retaining support plate is provided with one end of a movable support column, and the other end of the support column is hinged to the base plate. The tilt angle of the base plate can be adjusted by adjusting the position of the support column on the retaining support plate.

[0015] Preferably, the bottom end of the baffle support plate is provided with a sliding groove, a movable sliding block is provided in the sliding groove, the bottom end of the sliding block is provided with a spherical fixing groove, one end of the support column is provided with a spherical fixing block, and the fixing block is adapted to the fixing groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) The skirt baffle device of the vacuum belt dewatering machine of the present invention uses carbon steel lined with plastic anti-corrosion material as the main support assembly, and wear-resistant lining plate assembly with ultra-high density polyethylene wear-resistant layer. The whole is designed for a maintenance cycle of 3-5 years, which is far longer than the 1-2 years service life of traditional rubber skirts. The reinforcing ribs enhance the structural strength of the support, reduce deformation and wear during operation, and greatly reduce the replacement frequency and maintenance cost. The long elliptical adjustment hole of the horizontal support can adjust the left and right positions, and the height adjustment groove of the vertical support can be adjusted with the adjustment slider to achieve height adjustment. It can be accurately adapted to vacuum belt dewatering machines of different specifications by locking bolts. The arc-shaped guide surface guides the filter cloth to make stable contact, ensuring that the ultra-high density polyethylene wear-resistant layer is tightly attached to the filter cloth, effectively preventing the slurry from splashing out or crossing the belt into the vacuum box, and improving the sealing reliability.

[0018] (2) The present invention provides a skirt baffle device for a vacuum belt dewatering machine. The device is mechanically connected by fixing bolts and liner fixing bolts. The installation process does not require open flame and only 2-3 people are needed to complete the installation or replacement within 3-4 working hours. The cooperation between the positioning groove and the positioning protrusion facilitates the quick positioning and installation of the wear-resistant liner assembly. Compared with the complicated bonding and repair process of traditional rubber skirts, it significantly shortens the maintenance time and improves the work efficiency. The ultra-high density polyethylene wear-resistant layer only contacts the filter cloth and does not contact the tape. It also has a low coefficient of friction, which avoids wear on the tape. The buffer pad reduces the rigid collision between the filter cloth and the baffle support plate. The splash baffle blocks splashed slurry, effectively reducing the risk of accidents such as filter cloth tearing and roller shaft breakage, and protecting the core components of the vacuum belt dewatering machine. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a skirt baffle device for a vacuum belt dewatering machine proposed in this invention;

[0021] Figure 2 This is a partial three-dimensional structural diagram of a skirt baffle device for a vacuum belt dewatering machine proposed in this invention;

[0022] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of part A in the diagram;

[0023] Figure 4 This is a rear view three-dimensional structural diagram of the skirt baffle device of a vacuum belt dewatering machine proposed in this invention.

[0024] In the diagram: 1-Main support assembly; 11-Horizontal support; 12-Longitudinal support; 13-Long elliptical adjustment hole; 14-Fixing bolt; 15-Height adjustment groove; 16-Adjusting slider; 17-Locking bolt; 18-Reinforcing rib plate; 2-Blocking support plate; 21-Buffer pad; 22-Splash guard; 3-Liner fixing frame; 31-Liner fixing bolt; 32-Positioning groove; 4-Wear-resistant liner assembly; 41-Base plate; 42-Ultra-high density polyethylene wear-resistant layer; 43-Positioning protrusion; 44-Arc-shaped guide surface; 5-Sliding block; 51-Sliding groove; 52-Support column. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] refer to Figure 1-4 A skirt-type material blocking device for a vacuum belt dewatering machine includes a main support assembly 1, which includes a transverse support 11 and a longitudinal support 12. The transverse support 11 and the longitudinal support 12 are vertically and fixedly connected. The transverse support 11 has multiple elongated elliptical adjustment holes 13. The main support assembly 1 is connected to the frame of the vacuum belt dewatering machine through fixing bolts 14 that pass through the elongated elliptical adjustment holes 13. The main support assembly 1 is made of carbon steel lined with plastic anti-corrosion material, combined with a wear-resistant liner assembly 4 with an ultra-high density polyethylene wear-resistant layer 42. The whole assembly is designed for a 3-5 year maintenance cycle, which is far longer than the 1-2 year service life of traditional rubber skirts. The reinforcing ribs 18 enhance the structural strength of the support, reduce deformation and wear during operation, and significantly reduce the replacement frequency and maintenance costs. In this embodiment, a height adjustment groove 15 is provided on the inner side of the longitudinal support 12. An adjustment slider 16 is slidably installed on the inner side of the height adjustment groove 15. A locking bolt 17 is threaded on the adjustment slider 16, and one end of the locking bolt 17 abuts against the longitudinal support 12.

[0027] In this embodiment, a baffle support plate 2 is fixedly installed on one side of the adjusting slider 16, and a buffer pad 21 is fixedly installed on one side of the baffle support plate 2. The buffer pad 21 is made of nitrile rubber. The elongated elliptical adjustment hole 13 of the transverse bracket 11 can adjust the left and right positions. The height adjustment groove 15 of the longitudinal bracket 12 cooperates with the adjusting slider 16 to achieve height adjustment. It is fixed by locking bolts 17, which can accurately adapt to vacuum belt dewatering machines of different specifications. The arc-shaped guide surface 44 guides the filter cloth to make smooth contact, ensuring that the ultra-high density polyethylene wear-resistant layer 42 is tightly attached to the filter cloth, effectively preventing slurry from splashing out or crossing the tape and entering the vacuum box, thus improving the sealing reliability. In this embodiment, a liner fixing frame 3 is fixedly installed on the other side of the baffle support plate 2. A wear-resistant liner assembly 4 is provided on the inner side of the liner fixing frame 3. The wear-resistant liner assembly 4 includes a base plate 41 and an ultra-high density polyethylene wear-resistant layer 42. The ultra-high density polyethylene wear-resistant layer 42 is fixedly installed on the outer side of the base plate 41.

[0028] In this embodiment, multiple liner fixing bolts 31 are threaded on the outer side of the liner fixing frame 3. The liner fixing bolts 31 pass through the liner fixing frame 3 and are threadedly connected to the base plate 41. The baffle support plate 2 is provided with a positioning groove 32. The edge of the base plate 41 is provided with a positioning protrusion 43 that matches the positioning groove 32. The device is mechanically connected by fixing bolts 14 and liner fixing bolts 31. The installation process does not require open flame and only 2-3 people are needed to complete the installation or replacement within 3-4 working hours. The cooperation between the positioning groove 32 and the positioning protrusion 43 facilitates the quick positioning and installation of the wear-resistant liner assembly 4. Compared with the complicated bonding and repair process of traditional rubber skirts, it significantly shortens the maintenance time and improves the work efficiency. In this embodiment, a reinforcing rib plate 18 is fixedly installed at the bottom of the transverse support 11. One side of the reinforcing rib plate 18 is fixedly connected to the longitudinal support 12. The main support assembly 1 is made of carbon steel lined with plastic anti-corrosion material.

[0029] In this embodiment, an arc-shaped guide surface 44 is provided on the outer side of the ultra-high density polyethylene wear-resistant layer 42. The ultra-high density polyethylene wear-resistant layer 42 is in contact with the filter cloth of the vacuum belt dewatering machine, but not with the conveyor belt. The ultra-high density polyethylene wear-resistant layer 42 only contacts the filter cloth and not the conveyor belt, and has a low coefficient of friction, thus avoiding wear on the conveyor belt. The buffer pad 21 reduces the rigid collision between the filter cloth and the baffle support plate 2, and the splash baffle 22 blocks splashed slurry, effectively reducing the risk of accidents such as filter cloth tearing and roller shaft breakage, and protecting the core components of the vacuum belt dewatering machine. In this embodiment, a splash baffle 22 is fixedly installed on the top of the baffle support plate 2. The splash baffle 22 forms a 120° angle with the baffle support plate 2, and the material of the splash baffle 22 is PP plastic.

[0030] Meanwhile, in order to increase the adaptability of the ultra-high density polyethylene wear-resistant layer 42 provided in this embodiment to different vacuum belt dewatering machines, in this embodiment, the positioning groove 32 is set as an arc groove and the positioning protrusion 43 is set as an arc protrusion. In use, the positioning protrusion 43 is inserted into the positioning groove 32 from one end of the positioning groove 32, and the angle between the base plate 41 and the baffle support plate 2 is adjusted to adapt to different models of vacuum belt dewatering machines and increase the application scenarios.

[0031] One end of a movable support column 52 is provided at the bottom of the material blocking support plate 2, and the other end of the support column 52 is hinged to the base plate 41. The tilt angle of the base plate 41 can be adjusted by adjusting the position of the support column 52 on the material blocking support plate.

[0032] Specifically, a sliding groove 51 is provided at the bottom of the material retaining support plate, and a movable sliding block 5 is provided in the sliding groove 51. A spherical fixing groove is provided at the bottom of the sliding block 5, and a spherical fixing block is provided at one end of the support column 52. The fixing block is adapted to the fixing groove. With this configuration, when it is necessary to adjust the tilt angle of the base plate 41, the position of the sliding block 5 in the sliding groove 51 is adjusted. After the base plate 41 is adjusted to a suitable tilt angle, the sliding block 5 can be fixed.

[0033] In this embodiment, in order to ensure the fixing effect of the sliding groove 51, the sliding groove 51 is set as a T-shaped groove, which supports the sliding block 5 and the support column 52 without affecting the movement of the sliding block 5.

[0034] In this embodiment, a threaded through hole is provided on the sliding block 5, and a bolt is disposed in the threaded through hole. By tightening the bolt into the threaded through hole, the top end of the bolt is in close contact with the sliding groove 51, thereby fixing the sliding block 5. Of course, it is also possible to fix it by setting blocks on both sides of the sliding block 5, or to hinge one end of the support column 52 to the sliding block 5.

[0035] The implementation principle of the skirt baffle device for a vacuum belt dewatering machine in this embodiment is as follows: The main support assembly 1 is made of carbon steel lined with plastic anti-corrosion material, and is equipped with a wear-resistant liner assembly 4 with an ultra-high density polyethylene wear-resistant layer 42. The whole assembly is designed for a 3-5 year maintenance cycle, which is far longer than the 1-2 year service life of traditional rubber skirts. The reinforcing ribs 18 enhance the structural strength of the support, reduce deformation and wear during operation, and significantly reduce the replacement frequency and maintenance costs. The elongated elliptical adjustment hole 13 of the transverse support 11 can adjust the left and right positions, and the height adjustment groove 15 of the longitudinal support 12, together with the adjustment slider 16, can achieve height adjustment. It is fixed by locking bolts 17, which can accurately adapt to vacuum belt dewatering machines of different specifications. The arc-shaped guide surface 44 guides the filter cloth to make smooth contact, ensuring that the ultra-high density polyethylene wear-resistant layer 42 is tightly attached to the filter cloth, effectively preventing slurry from splashing out or crossing the belt and entering the vacuum box, thus improving the sealing reliability.

[0036] The device is mechanically connected by fixing bolts 14 and liner fixing bolts 31. The installation process does not require open flame and only 2-3 people are needed to complete the installation or replacement within 3-4 working hours. The cooperation between the positioning groove 32 and the positioning protrusion 43 facilitates the quick positioning and installation of the wear-resistant liner assembly 4. Compared with the complicated bonding and repair process of traditional rubber skirts, it significantly shortens the maintenance time and improves the work efficiency.

[0037] By adjusting the position of the sliding block 5 in the sliding groove 51, the tilt angle of the base plate 41 relative to the baffle support plate 2 is adjusted to ensure that the skirt baffle device can adapt to different models of vacuum belt dewatering machines, thus increasing the application scenarios.

[0038] The ultra-high density polyethylene wear-resistant layer 42 only contacts the filter cloth and not the conveyor belt, and has a low coefficient of friction, thus avoiding wear on the conveyor belt; the buffer pad 21 reduces the rigid collision between the filter cloth and the baffle support plate 2, and the splash baffle 22 blocks splashed slurry, effectively reducing the risk of accidents such as filter cloth tearing and roller shaft breakage, and protecting the core components of the vacuum belt dewatering machine.

[0039] The vertical connection between the transverse support 11 and the longitudinal support 12, along with the reinforcing ribs 18, forms a stable frame structure that will not fall off due to vibration during operation. The PP splash guard 22 and the nitrile rubber buffer pad 21 are resistant to acid and alkali corrosion, can adapt to the harsh working conditions of the desulfurization system, and ensure long-term stable operation.

[0040] The device has a simple design and uses the existing equipment frame as support, so no large-scale modification is required. The modular design of the wear-resistant liner assembly 4 reduces replacement costs, and due to its long service life and low maintenance, its long-term operating cost is much lower than that of traditional rubber skirts, which is economical.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The foregoing has provided a detailed description of the skirt-side baffle device for a vacuum belt dewatering machine provided by the present invention. Specific embodiments have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A skirt-side baffle device for a vacuum belt dewatering machine, characterized in that, include: The main support assembly (1) includes a transverse support (11) and a longitudinal support (12). The transverse support (11) and the longitudinal support (12) are vertically fixedly connected. The transverse support (11) has multiple elongated elliptical adjustment holes (13). The main support assembly (1) is connected to the frame of the vacuum belt dewatering machine by fixing bolts (14) that pass through the elongated elliptical adjustment holes (13).

2. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 1, characterized in that, The longitudinal support (12) has a height adjustment groove (15) on its inner side. An adjustment slider (16) is slidably installed on the inner side of the height adjustment groove (15). A locking bolt (17) is threaded on the adjustment slider (16). One end of the locking bolt (17) abuts against the longitudinal support (12).

3. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 2, characterized in that, A baffle support plate (2) is fixedly installed on one side of the adjusting slider (16), and a buffer pad (21) is fixedly installed on one side of the baffle support plate (2). The buffer pad (21) is made of nitrile rubber.

4. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 3, characterized in that, A liner fixing frame (3) is fixedly installed on the other side of the baffle support plate (2). A wear-resistant liner assembly (4) is provided on the inner side of the liner fixing frame (3). The wear-resistant liner assembly (4) includes a base plate (41) and an ultra-high density polyethylene wear-resistant layer (42). The ultra-high density polyethylene wear-resistant layer (42) is fixedly installed on the outer side of the base plate (41).

5. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 4, characterized in that, The outer side of the liner fixing frame (3) is threaded with multiple liner fixing bolts (31), which pass through the liner fixing frame (3) and are threadedly connected to the base plate (41). The baffle support plate (2) is provided with a positioning groove (32), and the edge of the base plate (41) is provided with a positioning protrusion (43) that matches the positioning groove (32). The positioning groove (32) is an arc groove, and the positioning protrusion (43) is an arc protrusion. The positioning protrusion (43) can rotate along the positioning groove (32).

6. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 1, characterized in that, The bottom of the transverse support (11) is fixedly installed with a reinforcing rib plate (18), one side of which is fixedly connected to the longitudinal support (12). The main support assembly (1) is made of carbon steel lined with plastic anti-corrosion material.

7. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 4, characterized in that, An arc-shaped guide surface (44) is provided on the outer side of the ultra-high density polyethylene wear-resistant layer (42). The ultra-high density polyethylene wear-resistant layer (42) is in contact with the filter cloth of the vacuum belt dewatering machine, but not with the tape.

8. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 3, characterized in that, A splash guard (22) is fixedly installed on the top of the material blocking support plate (2). The splash guard (22) forms a 120° angle with the material blocking support plate (2). The material of the splash guard (22) is PP plastic.

9. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 5, characterized in that, The bottom end of the baffle support plate (2) is provided with one end of a movable support column (52), and the other end of the support column (52) is hinged to the base plate (41). The support column (52) adjusts the tilt angle of the base plate (41) by adjusting its position on the baffle support plate (2).

10. The skirt-side baffle device for a vacuum belt dewatering machine according to claim 9, characterized in that, The bottom end of the baffle support plate (2) is provided with a sliding groove (51), and a movable sliding block (5) is provided in the sliding groove (51). The bottom end of the sliding block (5) is provided with a spherical fixing groove, and one end of the support column (52) is provided with a spherical fixing block. The fixing block is adapted to the fixing groove.

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