Industrial paper with single air bag clamp

Abstract

The utility model discloses an industrial paper single air bag clamp which is small in size, easy to install, capable of reducing impurities such as dust and adhesive to reduce cleaning difficulty and reduce the influence of scraper blade adjustment, comprising a connecting bottom plate, a pressing plate, a heat-resistant rubber air bag and a back knife plate, wherein the pressing plate is provided with an optimal arc groove, an arc slope surface adjacent to the optimal arc groove, a first insertion slot and a second insertion slot away from the arc slope surface, the back knife plate is inserted into the first insertion slot and fixedly connected with the pressing plate, the lower surface edge of the connecting bottom plate is protruded to form a rotating roller inserted into the optimal arc groove, the top and bottom of the heat-resistant rubber air bag are fixedly connected with the lower surface of the connecting bottom plate and the arc slope surface respectively, and the line connecting the heat-resistant rubber air bag with the connecting part of the lower surface of the connecting bottom plate and the arc slope surface is perpendicular to the width direction of the pressing plate; the rotating roller has a first circular arc surface and a second circular arc surface, and a non-flat surface between the first circular arc surface and the second circular arc surface, and a plurality of concave positions are arranged on the non-flat surface along the circumferential direction of the optimal arc groove.

Description

Technical Field

[0001] This utility model relates to the field of papermaking machine technology, and in particular to a single-airbag clamp for industrial paper. Background Technology

[0002] With the continuous improvement of papermaking technology, paper machine speeds are increasing to meet the requirements of papermaking capacity and quality, leading to higher demands for the cleanliness of the paper machine roll surfaces. During the production and operation of the paper machine, debris and paper fibers adhere to the surface of the rolls. These need to be removed by a doctor blade pressed against the outer circumference of the roll. The shearing force exerted by the doctor blade on the roll surface during rotation removes these adhesive substances, thus achieving surface cleaning. To maintain the stability of the doctor blade setting, a special fixture is required to install and fix the doctor blade inside the paper machine. Currently, the industry commonly uses doctor blade fixtures with adjustable doctor blade line pressure and blade angle. However, in this case, a certain gap exists at the doctor blade mounting location, making it easy for paper fibers or adhesive materials to get into the gap inside the fixture, thereby affecting the adjustment of the doctor blade line pressure and blade angle. In addition, traditional heat-resistant rubber airbag clamps are mostly double heat-resistant rubber airbag clamps, which have a large overall size. However, the installation space inside the paper machine is limited, which increases the difficulty of installing the clamp. Furthermore, there are many gaps between the clamp parts and the fit between the parts, which can easily cause dust accumulation and increase the difficulty of cleaning the clamp. Utility Model Content

[0003] Therefore, it is necessary to address the above-mentioned shortcomings by providing a single-bladder clamp for industrial paper that is smaller in size, easier to install, reduces dust and adhesive residue to lower cleaning difficulty, and minimizes the impact on doctor blade adjustment.

[0004] A single-airbag clamp for industrial papermaking includes a connecting base plate for mounting on the structure of a papermaking machine and adjacent to the roll surface of the papermaking machine, a pressure plate that rotatably engages with the connecting base plate, a heat-resistant rubber airbag clamped between the connecting base plate and the pressure plate and fixedly connected to the connecting base plate and the pressure plate, and a back knife plate. The side of the pressure plate facing the connecting base plate is the working surface. A curved groove is formed in the center of the working surface, and an arc-shaped slope is formed near the curved groove. A first slot and a second slot for inserting a scraper blade are formed at the end of the pressure plate away from the arc-shaped slope. The back blade is inserted into the first slot and fixedly connected to the pressure plate, with its end abutting against the center of the scraper blade. The lower surface edge of the connecting base plate protrudes to form a rotating roller that is inserted into the curved groove. The top of the heat-resistant rubber airbag is fixedly connected to the lower surface of the connecting base plate, and the bottom of the heat-resistant rubber airbag is fixedly connected to the bottom of the arc-shaped slope. Furthermore, the line connecting the heat-resistant rubber airbag to the lower surface of the connecting base plate and the heat-resistant rubber airbag to the arc-shaped slope is perpendicular to the width direction of the pressure plate; the rotating roller has a first arc surface and a second arc surface symmetrically arranged and respectively connected to the edge of the connecting base plate, and a non-flat surface located between the first arc surface and the second arc surface and connected to the first arc surface and the second arc surface, and a plurality of recesses are spaced apart along the circumferential direction of the arc groove on the non-flat surface; when the heat-resistant rubber airbag is inflated, it pushes against the arc-shaped slope and causes the pressure plate to deflect in the first direction, and when the heat-resistant rubber airbag is deflated, it contracts to pull the pressure plate to deflect in the second direction.

[0005] In one embodiment, the heat-resistant rubber airbag has an elliptical cross-section, and the dimension of the heat-resistant rubber airbag along the width direction of the pressure plate is larger than the dimension of the heat-resistant rubber airbag along the thickness direction of the pressure plate.

[0006] In one embodiment, the outer contour shape of the heat-resistant rubber airbag when inflated is adapted to the shape of the curved slope.

[0007] In one embodiment, a peak surface is formed on the arc-shaped slope near the opening of the superior arc groove, and a valley surface is formed on the arc-shaped slope away from the opening of the superior arc groove. The peak surface is a convex arc surface, and the valley surface is a plane. The second arc surface is located on the side of the rotating roller adjacent to the heat-resistant rubber airbag, and the part where the second arc surface is connected to the rotating roller is provided with a concave arc surface that is adapted to the shape of the peak surface.

[0008] In one embodiment, a first mounting groove is provided on the valley surface, a second mounting groove is provided on the lower surface of the connecting base plate above the first mounting groove, a first connecting post is provided at the bottom of the heat-resistant rubber airbag and inserted into the first mounting groove and engaged with the connecting base along the thickness direction of the pressure plate, and a second connecting post is provided at the top of the heat-resistant rubber airbag and inserted into the second mounting groove and engaged with the pressure plate along the thickness direction of the pressure plate.

[0009] In one embodiment, the first mounting groove includes a first straight groove penetrating the valley surface and a first semi-circular groove located below and communicating with the first straight groove. The diameter of the first semi-circular groove is greater than the width of the first straight groove, and the communicating part of the first semi-circular groove and the first straight groove forms a first step on both sides of the bottom of the first straight groove. The first connecting post includes a first straight neck inserted into the first straight groove and a first limiting head fixed at the bottom end of the first straight neck and embedded in the first semi-circular groove. The first limiting head includes two first limiting inclined surfaces that are oppositely arranged and both connected to the first straight neck, and two first guide inclined surfaces that are connected to the two first limiting inclined surfaces and oppositely arranged. The two first guide inclined surfaces are connected and asymmetrical, and both first limiting inclined surfaces abut against the first step. The second mounting groove includes a second straight groove penetrating the lower surface of the connecting base plate and a second semi-circular groove located above and communicating with the second straight groove. The diameter of the second semi-circular groove is greater than the width of the second straight groove, and the communicating part of the second semi-circular groove and the second straight groove forms a second step on both sides of the top of the second straight groove. The second connecting post includes a second straight neck inserted into the second straight groove and a second limiting head fixed at the top of the second straight neck and embedded in the second semi-circular groove. The second limiting head includes two second limiting inclined surfaces that are oppositely arranged and connected to the second straight neck, and two second guide inclined surfaces that are connected to the two second limiting inclined surfaces and oppositely arranged. The two second guide inclined surfaces are connected and asymmetrical, and both second limiting inclined surfaces abut against the second step.

[0010] In one embodiment, the heat-resistant rubber airbag has at least one air port, which is connected to an external air pressure device via an air pipe.

[0011] In one embodiment, the end of the pressure plate away from the curved slope is bent downward to form the second slot. The second slot has the first slot at the groove edge near the curved slope. A limiting groove is formed on the inner wall of the first slot near the lower surface of the pressure plate. The back blade is inserted into the first slot and fits against the inner wall of the first slot. A limiting block that convexly and concavely matches the limiting groove is fixed on the back blade. A channel for the scraper blade to pass through is formed between the edge of the back blade and the pressure plate.

[0012] In one embodiment, the upper surface of the connecting base plate is provided with a groove that slides and engages with a roller on the paper machine structure. The groove extends through at least one end face of the connecting base plate and has a T-shaped cross-section.

[0013] In one embodiment, the pressure plate and the connecting base plate are both made of fiberglass, and the back blade plate is made of spring stainless steel.

[0014] This invention relates to a single-airbag clamp for industrial paper processing. By providing a first arc surface, a second arc surface, and a non-flat surface with multiple recesses on the rotating roller, and placing a single heat-resistant rubber airbag between the pressure plate and the connecting base plate, this clamp satisfies the rotational fit between the pressure plate and the connecting base plate, as well as the rotational drive of the pressure plate by the heat-resistant rubber airbag. Simultaneously, by reducing the number of clamp components, the gaps between components are reduced, thus reducing dust and adhesive residue accumulation on the clamp surface, thereby reducing the amount and difficulty of cleaning. Even if a small amount of dust, paper fibers, or adhesive residue enters the gap between the rotating roller and the curved groove, these impurities will be squeezed into the recesses on the rotating roller surface during the rotation of the pressure plate, reducing the impact of impurities on the mating parts of the rotating roller and the curved groove, ensuring the normal rotation and performance of the pressure plate and doctor blade. By making the line connecting the heat-resistant rubber airbag to the pressure plate and the connecting base plate perpendicular to the width direction of the pressure plate, it is beneficial to control the dimensions of the clamp in the thickness direction of the pressure plate, adapting to smaller installation spaces and reducing the difficulty of clamp installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a single-airbag clamp for industrial paper in one embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of the industrial paper single-airbag clamp and doctor blade in one embodiment of the present invention; Figure 3 This is a cross-sectional structural diagram of the single airbag clamp for industrial paper and the doctor blade in another embodiment of the present invention. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] Please combine Figure 1 and Figure 2This utility model discloses a single-airbag clamp 10 for industrial papermaking. The clamp includes a connecting base plate 100 for mounting on the structure of a papermaking machine and adjacent to the papermaking machine roll surface 20, a pressure plate 200 rotatably engaged with the connecting base plate 100, a heat-resistant rubber airbag 300 clamped between the connecting base plate 100 and the pressure plate 200 and fixedly connected to the connecting base plate 100 and the pressure plate 200, and a back knife plate 400. The side of the pressure plate 200 facing the connecting base plate 100 is the working surface, which is the surface where the pressure plate 200 interacts with the connecting base plate 100 and the heat-resistant rubber airbag 300. An arc groove 210 is provided in the middle of the working surface, and an arc-shaped slope 220 is provided on the working surface adjacent to the arc groove 210. A first slot 230 and a second slot 240 for inserting scraper blade 30 are provided on the end of the pressure plate 200 away from the side where the arc-shaped slope 220 is located. The back blade plate 400 is inserted into the first slot 230 and fixedly connected to the pressure plate 200, and the end of the back blade plate 400 abuts against the middle of the scraper blade 30. Thus, when the scraper blade 30 is inserted into the second slot 240 and abuts against the back blade plate 400, the scraper blade 30 abuts against the inner wall of the second slot 240, the edge of the slot opening of the second slot 240, and the back blade plate 400 at the same time. The scraper blade 30 is thus restricted within the second slot 240 under the joint constraint of the three, so as to realize the installation of the scraper blade 30. The lower surface edge of the connecting base plate 100 protrudes to form a rotating roller 110 that is rotatably inserted into the curved groove 210. The limiting effect of the edge of the curved groove 210 on the rotating roller 110 prevents it from coming out of the groove, thus ensuring the stability and reliability of the connection between the connecting base plate 100 and the pressure plate 200. The top of the heat-resistant rubber airbag 300 is fixedly connected to the lower surface of the connecting base plate 100, and the bottom of the heat-resistant rubber airbag 300 is fixedly connected to the bottom of the curved slope 220. The line connecting the heat-resistant rubber airbag 300 to the lower surface of the connecting base plate 100 and the curved slope 220 is perpendicular to the width direction of the pressure plate 200. This can also be understood as the heat-resistant rubber airbag 300 being vertically installed between the connecting base plate 100 and the pressure plate 200. In this way, the lower surface of the pressure plate 200 can be set as a flat structure to reduce the size of the clamp along the thickness direction of the pressure plate 200. Furthermore, since most paper machine doctor blade clamps on the market currently adopt a double-airbag structure, there is a step in the structure inside the paper machine used to install the double-airbag clamp. When the heat-resistant rubber airbag 300 is installed vertically, the length of the lower surface of the pressure plate 200 can be shortened (the outer side of the heat-resistant rubber airbag 300 only needs the support of the curved slope 220), so that the clamp can be installed at the step. In this way, when this clamp replaces the existing double-airbag clamp, no other installation components need to be replaced, which can reduce equipment upgrade costs. In this embodiment, the width direction of the pressure plate 200 is... Figure 2 In the left-right direction of the figure shown, the thickness direction of the pressure plate 200 is... Figure 2 The vertical direction of the figure shown can also be explained with reference to other embodiments.

[0018] The rotating roller 110 has a first arc surface 111 and a second arc surface 112 symmetrically arranged and respectively connected to the edge of the connecting base plate 100, and a non-flat surface located between the first arc surface 111 and the second arc surface 112 and connected to the first arc surface 111 and the second arc surface 112. Multiple recesses 113 are spaced apart along the circumferential direction of the curved groove 210 on the non-flat surface. These recesses 113 provide temporary storage space for impurities to prevent impurities mixed between the rotating roller 110 and the inner wall of the curved groove 210 from interfering with the rotation of the pressure plate 200. When the heat-resistant rubber airbag 300 inflates, it pushes against the curved slope 220 and causes the pressure plate 200 to deflect in the first direction. When the heat-resistant rubber airbag 300 deflates, it contracts to pull the pressure plate 200 to deflect in the second direction. In this embodiment, with... Figure 2 Taking the orientation shown as an example, when the heat-resistant rubber airbag 300 is inflated, its outer surface pushes against the arc-shaped slope 220, causing the pressure plate 200 to rotate clockwise (i.e., the first direction). When the heat-resistant rubber airbag 300 deflates, it contracts, reducing its size along the thickness of the pressure plate 200. This, in turn, pulls the pressure plate 200 to rotate counterclockwise (i.e., the second direction) through its connection with the pressure plate 200. It should be noted that the connecting base plate 100 is located above the pressure plate 200, near the heat-resistant rubber airbag 300. The groove opening of the arc groove 210 is angled towards the side near the heat-resistant rubber airbag 300 to ensure that while the heat-resistant rubber airbag 300 is installed vertically, the connecting base plate 100 constrains the rotation of the pressure plate 200.

[0019] The aforementioned industrial paper single-airbag clamp 10, by providing a first arc surface 111, a second arc surface 112, and a non-flat front surface with multiple recesses 113 on the rotating roller 110, and by providing a single heat-resistant rubber airbag 300 between the pressure plate 200 and the connecting base plate 100, satisfies the rotational engagement of the pressure plate 200 and the connecting base plate 100, as well as the rotational drive of the pressure plate 200 by the heat-resistant rubber airbag 300. At the same time, by reducing the number of clamp components, the gaps between the components are reduced, which can reduce the accumulation of dust and adhesive on the clamp surface, thereby reducing the amount and difficulty of clamp cleaning; even with a small amount of dust... Paper fibers or adhesive residues entering the gap between the roller 110 and the curved groove 210 will be squeezed into the recess 113 on the surface of the roller 110 during the rotation of the pressure plate 200. This will reduce the impact of impurities on the mating parts of the roller 110 and the curved groove 210, ensuring the normal rotation and performance of the pressure plate 200 and the doctor blade 30. By making the line connecting the heat-resistant rubber airbag 300 to the connection point of the pressure plate 200 and the connecting base plate 100 perpendicular to the width direction of the pressure plate 200, it is beneficial to control the dimensions of the fixture in the thickness direction of the pressure plate 200, so as to adapt to the smaller installation space and reduce the difficulty of fixture installation.

[0020] The connecting base plate 100 serves two purposes: firstly, it acts as a mounting part for the clamp on the paper machine structure; secondly, it supports the pressure plate 200 and, together with the pressure plate 200, limits the position of the heat-resistant rubber airbag 300. In one embodiment, the connecting base plate 100 can be fixed to the paper machine structure with screws, and the connecting base plate 100 has mounting holes 120 for the screws to pass through. Preferably, the mounting holes 120 are countersunk holes to avoid interference with the heat-resistant rubber airbag 300 caused by screws protruding from the mounting holes 120. For another embodiment, please refer to... Figure 3 The upper surface of the connecting base plate 100 is provided with a groove 130 that slides and engages with rollers on the paper machine structure. The groove 130 extends through at least one end face of the connecting base plate 100, and its cross-section is T-shaped. This allows the rollers on the paper machine structure to be confined within the groove 130 in the thickness direction of the connecting base plate 100. Simultaneously, the groove 130 restricts the pulling path of the connecting base plate 100. When the clamp is damaged, the operator can pull the clamp along the length of the groove 130 and remove it from inside the paper machine for external repair or replacement, reducing the difficulty of clamp maintenance. The engagement between the rollers on the paper machine structure and the groove 130 on the connecting base plate 100 reduces the difficulty of disassembling and assembling the clamp from the paper machine structure. In this embodiment, the connecting base plate 100 is made of glass fiber to reduce the overall weight of the fixture while improving its corrosion resistance, so as to avoid damage to the connecting base plate 100 caused by contact with corrosive substances inside the paper machine structure, thereby extending the service life of the connecting base plate 100.

[0021] In addition, the lower surface of the connecting base plate 100 is a flat surface. As a result, when the heat-resistant rubber airbag 300 is inflated, the deformable space of the heat-resistant rubber airbag 300 on the side of the connecting base plate 100 is small. This allows the inflation and expansion deformation of the heat-resistant rubber airbag 300 to act more on the arc-shaped slope of the pressure plate 200, so as to push the pressure plate 200 to rotate.

[0022] The pressure plate 200 is used to mount the back knife plate 400 and the doctor blade 30. During the inflation and deflation of the heat-resistant rubber air bladder 300, it is deflected by the traction and push of the heat-resistant rubber air bladder 300 to adjust the linear pressure of the doctor blade 30 on the paper machine roll surface 20 and the angle of the doctor blade 30. In this embodiment, the pressure plate 200 is made of glass fiber to reduce the overall weight of the clamp while improving its corrosion resistance, thereby preventing damage to the pressure plate 200 from contact with corrosive substances inside the paper machine structure and extending the service life of the pressure plate 200.

[0023] The heat-resistant rubber airbag 300 provides power for the rotation of the pressure plate 200. In this embodiment, the heat-resistant rubber airbag 300 has at least one air port, which is connected to an external air pressure device via an air pipe. The air port can be located at the end of the heat-resistant rubber airbag 300 or on the circumferential side of the heat-resistant rubber airbag 300. Preferably, the heat-resistant rubber airbag 300 has an open structure at both ends, that is, the heat-resistant rubber airbag 300 has a cylindrical structure, one end of the heat-resistant rubber airbag 300 is covered with a cap, and the other end of the heat-resistant rubber airbag 300 forms an air port. An air pipe connector connected to an external air pipe is installed at the air port. An air path conversion device is connected to the air pipe. The air path conversion device can be a three-way valve. The air path conversion device is connected to the air pipe, a pressurizing device and a negative pressure device respectively. In this way, the heat-resistant rubber airbag 300 can be selectively connected to the pressurizing device and the negative pressure device through the air path conversion device, so that the heat-resistant rubber airbag 300 can be pressurized and expanded or depressurized and contracted, thereby realizing the adjustment of the angle of the pressure plate 200.

[0024] The heat-resistant rubber airbag 300 is made of heat-resistant rubber. During inflation and deflation, the airbag expands or contracts under the influence of its internal air pressure. This deformation causes the pressure plate 200 to rotate relative to the connecting base plate 100, adjusting the linear pressure and angle of the doctor blade 30. Furthermore, the use of heat-resistant rubber allows the airbag to maintain its operating temperature even under high temperatures inside the paper machine, extending its service life. Preferably, in this embodiment, the heat-resistant rubber airbag 300 is made of one of the following materials: silicone rubber, fluororubber, butyl rubber, or polytetrafluoroethylene rubber.

[0025] Furthermore, the heat-resistant rubber airbag 300 has an elliptical cross-section, and its dimension along the width of the pressure plate 200 is larger than its dimension along the thickness of the pressure plate 200. This allows the heat-resistant rubber airbag 300 to drive the pressure plate 200 to rotate while simultaneously reducing its dimension along the thickness of the pressure plate 200. This also reduces the height of the space between the pressure plate 200 and the connecting base plate 100, further reducing the dimension of the clamp along the thickness of the pressure plate 200 and simplifying its installation within the paper machine. In addition, in this embodiment, the outer contour shape of the heat-resistant rubber airbag 300 when it is inflated is adapted to the shape of the arc-shaped slope 220. Thus, when the heat-resistant rubber airbag 300 is inflated, its outer side is in contact with the arc-shaped slope 220, increasing the contact area between the two. This allows the heat-resistant rubber airbag 300 to stably push the arc-shaped slope 220 to deflect the pressure plate 200, thereby reducing the shaking of the pressure plate 200.

[0026] In one embodiment, a peak surface 221 is formed on the arc-shaped slope 220 near the opening of the superior arc groove 210, and a valley surface 222 is formed on the arc-shaped slope 220 away from the opening of the superior arc groove 210. The peak surface 221 is a convex arc surface, and the valley surface 222 is a plane. The second arc surface 112 is located on the side of the rotating roller 110 near the heat-resistant rubber airbag 300, and the part where the second arc surface 112 is connected to the rotating roller 110 is provided with a concave arc surface 114 that is adapted to the shape of the peak surface 221. Thus, during the rotation of the pressure plate 200 relative to the connecting base plate 100 with the rotating roller 110 as the center, the friction between the edge of the rotating roller 110 and the edge of the groove 210 can be reduced, thereby reducing damage to the rotating roller 110 and the pressure plate 200. At the same time, the concave arc surface 114 can also guide the rotation of the pressure plate 200 by rotating and fitting with the peak surface 221, increasing the contact area between the pressure plate 200 and the rotating roller 110, and further improving the stability of the rotation of the pressure plate 200.

[0027] To secure the heat-resistant rubber airbag 300 to the pressure plate 200 and the connecting base plate 100, a first mounting groove 250 is provided on the valley surface 222, and a second mounting groove 140 is provided on the lower surface of the connecting base plate 100 above the first mounting groove 250. The bottom of the heat-resistant rubber airbag 300 has a first connecting post 310 that inserts into the first mounting groove 250 and engages with the connecting base along the thickness direction of the pressure plate 200. The top of the heat-resistant rubber airbag 300 has a second connecting post 320 that inserts into the second mounting groove 140 and engages with the pressure plate 200 along the thickness direction of the pressure plate 200. Thus, through the insertion and engagement of the first connecting post 310 with the first mounting groove 250 and the second connecting post 320 with the second mounting groove 140, the heat-resistant rubber airbag 300 can be fixedly installed on the pressure plate 200 and the connecting base plate 100.

[0028] Furthermore, the first mounting groove 250 includes a first straight groove 251 penetrating the valley surface 222 and a first semi-circular groove 252 located below and communicating with the first straight groove 251. The diameter of the first semi-circular groove 252 is greater than the width of the first straight groove 251, and the communicating part between the first semi-circular groove 252 and the first straight groove 251 forms a first step 253 on both sides of the bottom of the first straight groove 251. The first connecting post 310 includes a first straight neck 311 inserted into the first straight groove 251 and a first limiting head 312 fixed at the bottom end of the straight neck 311 and embedded in the first semi-circular groove 252. The first limiting head 312 includes two first limiting inclined surfaces that are arranged opposite to each other and connected to the first straight neck 311, and two first guide inclined surfaces that are connected to the two first limiting inclined surfaces and arranged opposite to each other. The two first guide inclined surfaces are connected and asymmetrical, and both first limiting inclined surfaces abut against the first step 253. Thus, when the first connecting post 310 is connected to the pressure plate 200, the first limiting head 312 on the first connecting post 310 only needs to be inserted into the first semi-circular groove 252 through the first straight neck 311. Since the heat-resistant rubber airbag 300 is made of heat-resistant rubber material, it has a certain deformation capability. The bottom end of the first limiting head 312 is provided with two first guide slopes. During the process of the first limiting head 312 being pressed down into the first straight neck 311, the setting of the first guide slope makes the bottom end of the first limiting head 312 have a conical structure, so as to guide the first limiting head 312 to be inserted into the first straight neck 311 and deformed under the pressure of the inner wall of the first straight neck 311 until the first limiting head 312 is completely inserted into the first semi-circular groove 252. The two first limiting slopes then abut against the first step 253 to prevent the first connecting post 310 from falling out of the first mounting groove 250. The second mounting groove 140 includes a second straight groove 141 that penetrates the lower surface of the base plate 100 and a second semi-circular groove 142 located above and communicating with the second straight groove 141. The diameter of the second semi-circular groove 142 is greater than the width of the second straight groove 141, and the communicating part of the second semi-circular groove 142 and the second straight groove 141 forms a second step 143 on both sides of the top of the second straight groove 141. The second connecting post 320 includes a second straight neck 321 inserted into the second straight groove 141 and a second limiting head 322 fixed to the top of the second straight neck 321 and embedded in the second semi-circular groove 142. The second limiting head 322 includes two second limiting inclined surfaces that are oppositely arranged and connected to the second straight neck 321, and two second guide inclined surfaces that are connected to the two second limiting inclined surfaces and oppositely arranged. The two second guide inclined surfaces are connected and asymmetrical, and both second limiting inclined surfaces abut against the second step 143.Thus, when the second connecting post 320 is connected to the connecting base plate 100, the second limiting head 322 on the second connecting post 320 only needs to be inserted into the second semi-circular groove 142 via the second straight neck 321. Since the heat-resistant rubber airbag 300 is made of heat-resistant rubber material, it has a certain deformation capability. The top of the second limiting head 322 is provided with two second guide slopes. During the process of the second limiting head 322 being pressed upward into the second straight neck 321, the setting of the second guide slopes makes the top of the second limiting head 322 have a conical structure, so as to guide the second limiting head 322 to be inserted into the second straight neck 321 and deformed under the pressure of the inner wall of the second straight neck 321 until the second limiting head 322 is completely inserted into the second semi-circular groove 142. The two second limiting slopes then abut against the second step 143 to prevent the second connecting post 320 from falling out of the second mounting groove 140. In actual operation, the first connecting post 310 and the second connecting post 320 can be inserted into the first mounting groove 250 and the second mounting groove 140 one by one along the ends of the pressure plate 200 and the connecting base plate 100. By pulling the heat-resistant rubber airbag 300 along the length of the pressure plate 200, the first connecting post 310 can be fully inserted into the first mounting groove 250 and the second connecting post 320 can be fully inserted into the second mounting groove 140, thereby reducing the installation difficulty of the heat-resistant rubber airbag 300.

[0029] The backing plate 400 is used to fix the scraper blade 30 by compression, thereby achieving the installation of the scraper blade 30 on the fixture. The backing plate 400 is made of spring stainless steel. Thus, during the process of the backing plate 400 pressing against the scraper blade 30, the backing plate 400 will undergo a certain degree of deformation due to the influence of its own material, thereby providing a preload force for the scraper blade 30 and improving the stability of the scraper blade 30 installation. At the same time, the use of spring stainless steel to make the backing plate 400 can also slow down the corrosion process of the backing plate 400 and extend its service life. In one embodiment, the end of the pressure plate 200 away from the side where the curved slope 220 is located is bent downward to form a second slot 240. A first slot 230 is provided on the groove edge of the second slot 240 near the side of the curved slope 220. A limiting groove 231 is provided on the inner wall of the first slot 230 adjacent to the lower surface of the pressure plate 200. The back blade plate 400 is inserted into the first slot 230 and fits against the inner wall of the first slot 230. A limiting block 410 that convexly and concavely matches the limiting groove 231 is fixed on the back blade plate 400. A channel for the scraper blade 30 to pass through is formed between the back blade plate 400 and the edge of the pressure plate 200. In this embodiment, the first slot 230 restricts the movement of the back knife plate 400 along the thickness direction of the pressure plate 200, preventing the back knife plate 400 from shaking. The cooperation between the limiting block 410 and the limiting groove 231 restricts the movement of the back knife plate 400 along the width direction of the pressure plate 200, preventing the back knife plate 400 from being pulled out of the first slot 230 and ensuring the stability of the back knife plate 400 installation. When the doctor blade 30 is inserted into the second slot 240, one end of the doctor blade 30 abuts against the inner wall of the second slot 240 adjacent to the heat-resistant rubber airbag 300. The middle part of the doctor blade 30 abuts against the edge of the slot opening of the second slot 240 and the end of the back knife plate 400, respectively. The other end of the doctor blade 30 extends and acts on the paper machine roll surface 20, so that the rotation of the paper machine roll surface 20 causes the end of the doctor blade 30 to scrape impurities off the paper machine roll surface 20. Figure 2 For example, the inner wall of the second slot 240, adjacent to the heat-resistant rubber airbag 300, applies a horizontal force to the left and a vertical force to the down. The edge of the slot 240 applies a vertical force to the down and a horizontal force to the right. The back blade plate 400 applies a vertical force to the up and a horizontal force to the left. In this way, the scraper blade 30 remains balanced under the action of the above forces, thus being fixed on the pressure plate 200.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A single-bladder clamp for industrial paper processing, characterized in that, It includes a connecting base plate for installation on the structure of a paper machine and adjacent to the roller surface of the paper machine, a pressure plate that rotates with the connecting base plate, a heat-resistant rubber airbag sandwiched between the connecting base plate and the pressure plate and fixedly connected to the connecting base plate and the pressure plate, and a back knife plate; The side of the pressure plate facing the connecting base plate is the working surface. A curved groove is formed in the center of the working surface, and an arc-shaped slope is formed near the curved groove. A first slot and a second slot for inserting a scraper blade are formed at the end of the pressure plate away from the arc-shaped slope. The back blade is inserted into the first slot and fixedly connected to the pressure plate, with its end abutting against the center of the scraper blade. The lower surface edge of the connecting base plate protrudes to form a rotating roller that is inserted into the curved groove. The top of the heat-resistant rubber airbag is fixedly connected to the lower surface of the connecting base plate, and the bottom of the heat-resistant rubber airbag is fixedly connected to the bottom of the arc-shaped slope. Furthermore, the line connecting the heat-resistant rubber airbag to the lower surface of the connecting base plate and the heat-resistant rubber airbag to the arc-shaped slope is perpendicular to the width direction of the pressure plate; the rotating roller has a first arc surface and a second arc surface symmetrically arranged and respectively connected to the edge of the connecting base plate, and a non-flat surface located between the first arc surface and the second arc surface and connected to the first arc surface and the second arc surface, and a plurality of recesses are spaced apart along the circumferential direction of the arc groove on the non-flat surface; when the heat-resistant rubber airbag is inflated, it pushes against the arc-shaped slope and causes the pressure plate to deflect in the first direction, and when the heat-resistant rubber airbag is deflated, it contracts to pull the pressure plate to deflect in the second direction.

2. The single-airbag clamp for industrial paper processing according to claim 1, characterized in that, The heat-resistant rubber airbag has an elliptical cross-section, and its dimension along the width of the pressure plate is larger than its dimension along the thickness of the pressure plate.

3. The single-airbag clamp for industrial paper processing according to claim 2, characterized in that, The outer contour shape of the heat-resistant rubber airbag when inflated is adapted to the shape of the arc-shaped slope.

4. The single-bladder clamp for industrial paper processing according to claim 1, characterized in that, A peak surface is formed on the arc-shaped slope near the opening of the superior arc groove, and a valley surface is formed on the arc-shaped slope away from the opening of the superior arc groove. The peak surface is a convex arc surface, and the valley surface is a plane. The second arc surface is located on the side of the rotating roller near the heat-resistant rubber airbag, and the part where the second arc surface is connected to the rotating roller is provided with a concave arc surface that is adapted to the shape of the peak surface.

5. The single-airbag clamp for industrial paper processing according to claim 4, characterized in that, A first mounting groove is provided on the valley surface, and a second mounting groove is provided on the lower surface of the connecting base plate above the first mounting groove. The bottom of the heat-resistant rubber airbag is provided with a first connecting post that is inserted into the first mounting groove and is matched with the connecting base along the thickness direction of the pressure plate. The top of the heat-resistant rubber airbag is provided with a second connecting post that is inserted into the second mounting groove and is matched with the pressure plate along the thickness direction of the pressure plate.

6. The single-airbag clamp for industrial paper processing according to claim 5, characterized in that, The first mounting groove includes a first straight groove penetrating the valley surface and a first semi-circular groove located below and communicating with the first straight groove. The diameter of the first semi-circular groove is greater than the width of the first straight groove, and the communicating part of the first semi-circular groove and the first straight groove forms a first step on both sides of the bottom of the first straight groove. The first connecting post includes a first straight neck inserted into the first straight groove and a first limiting head fixed at the bottom end of the first straight neck and embedded in the first semi-circular groove. The first limiting head includes two first limiting inclined surfaces that are arranged opposite to each other and connected to the first straight neck, and two first guide inclined surfaces that are connected to the two first limiting inclined surfaces and arranged opposite to each other. The two first guide inclined surfaces are connected and asymmetrical, and both first limiting inclined surfaces abut against the first step. The second mounting groove includes a second straight groove penetrating the lower surface of the connecting base plate and a second semi-circular groove located above and communicating with the second straight groove. The diameter of the second semi-circular groove is greater than the width of the second straight groove, and the communicating part of the second semi-circular groove and the second straight groove forms a second step on both sides of the top of the second straight groove. The second connecting post includes a second straight neck inserted into the second straight groove and a second limiting head fixed at the top of the second straight neck and embedded in the second semi-circular groove. The second limiting head includes two second limiting inclined surfaces that are oppositely arranged and connected to the second straight neck, and two second guide inclined surfaces that are connected to the two second limiting inclined surfaces and oppositely arranged. The two second guide inclined surfaces are connected and asymmetrical, and both second limiting inclined surfaces abut against the second step.

7. The single-airbag clamp for industrial paper processing according to claim 1, characterized in that, The heat-resistant rubber airbag has at least one air port, which is connected to an external air pressure device through an air pipe.

8. The single-airbag clamp for industrial paper processing according to claim 1, characterized in that, The end of the pressure plate away from the curved slope is bent downward to form the second slot. The first slot is provided at the groove edge of the second slot near the curved slope. A limiting groove is provided on the inner wall of the first slot near the lower surface of the pressure plate. The back blade is inserted into the first slot and fits against the inner wall of the first slot. A limiting block that convexly and concavely matches the limiting groove is fixed on the back blade. A channel for the scraper blade to pass through is formed between the edge of the back blade and the pressure plate.

9. The single-airbag clamp for industrial paper processing according to claim 1, characterized in that, The upper surface of the connecting base plate is provided with a sliding groove that slides with the rollers on the paper machine structure. The sliding groove passes through at least one end face of the connecting base plate, and the cross-section of the sliding groove is T-shaped.

10. The single-airbag clamp for industrial paper processing according to claim 1, characterized in that, Both the pressure plate and the connecting base plate are made of fiberglass, and the back blade plate is made of spring stainless steel.

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