Spring-free sealing water film cleaning nozzle for papermaking equipment

Abstract

This utility model discloses a spring-free adjustable sealing water film cleaning nozzle for papermaking equipment, belonging to the technical field of papermaking equipment. The main body consists of a tube, a sealing mandrel located inside the tube, and a mandrel sealing sleeve fitted over the sealing mandrel. A high-pressure sealing water film exists between the sealing mandrel and the mandrel sealing sleeve, forming a barrier to prevent water vapor or moisture from entering other parts of the tube. A nozzle rotating shaft is fitted over the mandrel sealing sleeve, and a flow channel is provided inside the sealing mandrel. One end of the tube is connected to a high-pressure water connector, and the end of the tube away from the high-pressure water connector is the spray point. Multiple main bearings are arranged in a direction parallel to the flow channel on the nozzle rotating shaft. This utility model can achieve self-sealing against water vapor, thereby replacing the original mechanical seal with a high-pressure water seal and improving the rigidity of the main shaft.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, and in particular to a papermaking equipment cleaning mechanism, especially a spring-free adjustable sealed water film cleaning nozzle for papermaking equipment. Background Technology

[0002] Paper is one of the most commonly used items in our daily lives. Whether reading, writing, or drawing, paper is indispensable. It is also essential in industrial, agricultural, and defense production. Papermaking, along with the compass, gunpowder, and printing, is considered one of the four great practical innovations of ancient Chinese science and technology, representing a significant contribution of the Chinese people to the development of world science and culture. The papermaking process relies heavily on the papermaking machine, a complete set of interconnected equipment that forms paper webs from pulp. This includes the headbox, wire section, press section, dryer section, calender, winding machine, and drive system, as well as auxiliary systems such as steam, water, vacuum, lubrication, and heat recovery. The wire section involves spreading the pulp on a wire mesh, which is then circulated by a conveyor. The pulp is then carried by the wire mesh through the press and dryer sections to form the final product.

[0003] However, after the pulp is formed, pulp fibers remain on the wire mesh. When the wire mesh is reused, this can easily lead to a deterioration in the quality of the final paper. The same issue occurs with the felt. Therefore, the wire mesh or felt needs to be cleaned during the papermaking process, requiring a high-pressure water cleaning system. To prevent moisture damage to the cleaning system components, current technology generally uses only mechanical seals, such as spring seals.

[0004] The prior art CN210066342U discloses a cleaning mechanism for a paper machine wire mesh. This utility model includes a frame, guide rollers, wire mesh, and a spraying device. The spraying device includes a spray pipe and a high-pressure spray head, and further includes two sets of support components respectively disposed on both sides of the wire mesh width direction. The spray pipe is supported at both ends on the tops of the two sets of support components. A reciprocating motion mechanism for driving the spray pipe to move back and forth along the wire mesh width direction is provided at the bottom of the frame. One end of the guide roller passes through the outer wall of the frame and is fixedly connected to a transmission rod. A first transmission disc is fixedly connected to the end of the transmission rod away from the guide roller. A second transmission disc is connected to the reciprocating motion mechanism. A transmission belt is sleeved on the outer side of the first and second transmission discs. Through the above arrangement, the quality of the formed paper is improved.

[0005] However, in the process of implementing the technical solution in the prior art, the applicant discovered the following technical problems in the prior art:

[0006] Because the cleaning mechanism needs to move back and forth when spraying high-pressure fluid (usually high-pressure water) to clean the mesh or felt, mechanical seals may become fatigued or degraded, leading to insufficient sealing and water leakage. This can cause the components to become damp, hindering production during maintenance or troubleshooting, and affecting the cleaning effect or production efficiency.

[0007] Furthermore, the motor that drives the cleaning mechanism is also prone to malfunction due to moisture, thus affecting work efficiency.

[0008] In addition, the smoothness of water flow from the cleaning nozzle depends on the water pressure. If there is a brief fluctuation in water pressure, it will cause the water flow from the cleaning nozzle to become stuck, which will affect the cleaning effect of the mesh or felt and thus affect production efficiency.

[0009] At the same time, the water spraying components are often fastened with bolts, and the moving cleaning mechanism is prone to causing the screws to loosen. If the bolts loosen and fall down onto the wire mesh or felt conveyor, it will seriously damage the entire papermaking process and cause very large losses.

[0010] It is important to note that the entire cleaning assembly needs to be driven by a large-span moving mechanism. However, due to the large span of the moving mechanism, the distance between the guide rails cannot remain consistent. In existing technology, the components moving within the guide rails use ball bearings. When the distance between the guide rails deforms and shrinks due to long-term use, they are prone to jamming and breaking the drive chain. Ultimately, this obstructs the cleaning process, requires maintenance, and affects production efficiency. Utility Model Content

[0011] The technical problem to be solved by this utility model is to provide a sealing water film cleaning component for papermaking equipment, which solves the technical problem that the cleaning equipment is prone to water seepage or moisture, which affects the cleaning effect and production efficiency. It achieves at least one of the technical effects of improving the cleaning effect and production efficiency.

[0012] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0013] A springless adjustable sealing water film cleaning nozzle for papermaking equipment comprises a main body and a driving device for driving the main body. The main body consists of a tube, a sealing mandrel located inside the tube, and a mandrel sealing sleeve fitted outside the sealing mandrel. A high-pressure sealing water film is formed between the sealing mandrel and the mandrel sealing sleeve, creating a barrier to prevent water vapor or moisture from entering other parts of the tube. A nozzle rotating main shaft is fitted outside the mandrel sealing sleeve. A flow channel is provided inside the sealing mandrel. One end of the tube is connected to a high-pressure water connector, and the end of the tube away from the high-pressure water connector is the water spray point. Multiple main bearings are provided in a direction parallel to the flow channel on the nozzle rotating main shaft.

[0014] Preferably, the flow channel extends through the high-pressure water connector, the nozzle rotating shaft, and the water spray point; wherein the water spray point is connected to the pipe body without bolts.

[0015] More preferably, the thickness of the high-pressure sealing water film is less than 0.6 mm.

[0016] More preferably, the driving device is a pneumatic motor or an electric motor; the driving device is coupled to the main body through a transmission device and drives the main body to move.

[0017] Preferably, the nozzle rotating shaft is provided with three main bearings in a direction parallel to the flow channel.

[0018] Preferably, the papermaking equipment sealing water film cleaning component is driven as a whole by a moving mechanism, which drives the papermaking equipment sealing water film cleaning component together with the drive device to move along a preset running direction.

[0019] More preferably, the preset running direction is perpendicular to the running direction of the mesh or felt.

[0020] Preferably, the water outlet is fitted with a conical seal; the sealing mandrel is a conical sealing mandrel.

[0021] More preferably, the water outlet of the spray nozzle is conical.

[0022] Preferably, the nozzle rotating spindle and the sealing mandrel are provided with annular sealing components, the annular sealing components including O-rings and skeleton sealing rings; the sealing mandrel is a tapered sealing mandrel; the top of the mandrel sealing sleeve over which the sealing mandrel is fitted is pressed and fixed by a clamping nut.

[0023] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0024] The above technical solution comprises a pipe body, a sealing mandrel located inside the pipe body, and a mandrel sealing sleeve fitted over the sealing mandrel. A high-pressure sealing water film exists between the sealing mandrel and the mandrel sealing sleeve, forming a barrier to prevent water vapor or moisture from entering other parts of the pipe body. A nozzle rotating main shaft is fitted over the mandrel sealing sleeve, and a flow channel is located inside the sealing mandrel. One end of the pipe body is connected to a high-pressure water connector, and the end of the pipe body away from the high-pressure water connector is the spray point. Multiple main bearings are installed parallel to the flow channel on the nozzle rotating main shaft, among other technical measures. These measures ensure that the high-pressure sealing water film between the sealing mandrel and the mandrel sealing sleeve forms a barrier, preventing water vapor or moisture from entering other parts of the pipe body. Furthermore, multiple main bearings replace spring adjustment, avoiding spring fatigue that could affect the sealing effect, and strengthen the rigid structure of the main shaft to improve the rotational accuracy between the main shaft and the sealing mandrel, thereby ensuring a long-term stable sealing effect and extending the service life of the mandrel. This technology effectively solves the technical problem that existing cleaning equipment is prone to water seepage or moisture, which affects the cleaning effect and production efficiency. It achieves the technical effect of avoiding moisture and improving the cleaning effect and production efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention (the driving device is specifically a motor);

[0027] Figure 3 for Figure 1 Enlarged view of part K in the image;

[0028] Figure 4 for Figure 1 Enlarged view of part M in the image;

[0029] Figure 5 This is a perspective view of the present utility model;

[0030] Figure 6 This is a perspective view of the present invention in a flipped state;

[0031] Figure 7 This is a schematic diagram of the operation of this utility model in a papermaking device;

[0032] Figure 8 This is a side view diagram of the operation of this utility model in a papermaking device;

[0033] Figure 9 This is a schematic diagram of the structure of the moving mechanism of this utility model;

[0034] Figure 10This is a side view of the moving mechanism of this utility model.

[0035] Figure 11 This is a schematic diagram of the structure of the mobile trolley in the mobile mechanism of this utility model;

[0036] Figure 12 This is a schematic diagram of the pulley structure of the mobile trolley in the mobile mechanism of this utility model.

[0037] In the diagram, 1000 is the main body; 1010 is the flow channel; 1020 is the high-pressure water connector; 1030 is the spray nozzle; 1031 is the water outlet; 1100 is the pipe body; 1110 is the sealing mandrel; 1120 is the mandrel sealing sleeve; 1130 is the clamping nut; 1200 is the high-pressure sealing water film; 1300 is the nozzle rotating spindle; 1310 is the O-ring seal; 1320 is the skeleton sealing ring; 1400 is the main bearing; 1500 is the spray plate; 1510 is the spray plate cover; 1520 is the high-pressure water buffer chamber; 2000 is the drive device; 2010 is the motor; 2020 is the pneumatic motor; 2030 is the transmission device; 3000 is the moving mechanism; 3010 is the chain; 3100 is the moving trolley; 3110 is the tapered roller bearing; 3120 is the pulley; and 3130 is the connecting arm. Detailed Implementation

[0038] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] During the papermaking process, the wire mesh or felt needs to be cleaned to prevent it from affecting the quality of the paper when it is reused.

[0040] However, in existing technologies, the cleaning mechanism is often prone to water leakage due to insufficient sealing, which causes the components to become damp, thus affecting the cleaning effect and production efficiency.

[0041] In addition, the motor 2010 that drives the cleaning mechanism is also prone to malfunction due to moisture, which can affect the cleaning effect and work efficiency.

[0042] Insufficient water flow stability from the cleaning nozzles also affects cleaning effectiveness and production efficiency.

[0043] The movement of the entire cleaning assembly is often driven by a moving mechanism 3000, which consists of a movable chain 3010, four pulleys 3120, and upper and lower guide rails. However, the large working space often requires guide rails with a very large span. Over long-term use, large-span guide rails cannot be guaranteed to remain undeformed. When the spacing between the guide rails decreases, the pulleys 3120 of the moving mechanism 3000 may become stuck, causing bearing failure and chain 3010 breakage.

[0044] At the same time, the loosening and falling of the fastening bolts of the lowest part of the cleaning mechanism further affected the normal production operation of the production line.

[0045] All of these unfavorable conditions will lead to reduced cleaning effectiveness and reduced production efficiency.

[0046] The technical solution of this application provides a sealing water film cleaning component for papermaking equipment, which solves the problems of insufficient cleaning effect of felt or mesh and the impact on production efficiency in the prior art. By replacing the original mechanical seal with a high-pressure water seal, it achieves the beneficial effects of preventing moisture penetration and improving production efficiency.

[0047] The overall concept of the implementation scheme of this utility model to solve the above-mentioned technical problems is as follows:

[0048] A sealing water film cleaning component for papermaking equipment, such as Figure 1 As shown, it mainly consists of a pipe body 1100, a sealing mandrel 1110 located inside the pipe body 1100, and a mandrel sealing sleeve 1120 sleeved outside the sealing mandrel 1110; a nozzle rotating main shaft 1300 is sleeved outside the mandrel sealing sleeve 1120; a flow channel 1010 is provided inside the sealing mandrel 1110; one end of the pipe body 1100 is connected to a high-pressure water connector 1020; the end of the pipe body 1100 away from the high-pressure water connector 1020 is the water spray point 1030; the flow channel 1010 passes through the high-pressure water connector 1020, the nozzle rotating main shaft 1300, and the water spray point 1030.

[0049] Among them, there is a high-pressure sealing water film 1200 between the sealing mandrel 1110 and the mandrel sealing sleeve 1120, and the thickness of the high-pressure sealing water film 1200 is less than 0.9mm.

[0050] High-pressure water enters from one end of the high-pressure water connector 1020, exits from the spray nozzle 1030 through the flow channel 1010, and is sprayed onto the felt or mesh to be cleaned. At this time, the high-pressure sealing water film 1200 between the sealing mandrel 1110 and the mandrel sealing sleeve 1120 forms a barrier to prevent water vapor or moisture from entering other parts of the pipe body 1100 through this barrier.

[0051] Specifically, the sealing mandrel 1110 is preferably a tapered sealing mandrel 1110.

[0052] More specifically, since the surface area of ​​the mandrel sealing sleeve 1120 is larger than that of the sealing mandrel 1110, when high-pressure water passes through the flow channel 1010, the high-pressure sealing water film 1200 forms a barrier that can achieve self-sealing of water vapor, thereby realizing the replacement of the original mechanical seal with a high-pressure water seal.

[0053] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0054] A sealing water film cleaning component for papermaking equipment, such as Figure 1 and Figure 4 As shown, a high-pressure water seal replaces the original mechanical seal. The papermaking equipment sealing water film cleaning assembly consists of a main body 1000 and a drive device 2000 that drives the main body 1000. The main body 1000 of the papermaking equipment sealing water film cleaning assembly is mainly composed of a pipe body 1100, a sealing mandrel 1110 located inside the pipe body 1100, and a mandrel sealing sleeve 1120 sleeved outside the sealing mandrel 1110; the sealing mandrel 1110 is provided with a flow channel 1010, one end of the pipe body 1100 is connected to a high-pressure water connector 1020, and the end of the pipe body 1100 away from the high-pressure water connector 1020 is a water spray point 1030. The flow channel 1010 passes through the high-pressure water connector 1020 and the water spray point 1030.

[0055] Among them, there is a high-pressure sealing water film 1200 between the sealing mandrel 1110 and the mandrel sealing sleeve 1120, and the thickness of the high-pressure sealing water film 1200 is 0.3-0.9mm.

[0056] like Figure 2 As shown, high-pressure water enters from one end of the high-pressure water connector 1020, exits from the spray nozzle 1030 through the flow channel 1010, and is sprayed onto the felt or mesh to be cleaned. The surface area of ​​the mandrel sealing sleeve 1120 is larger than that of the sealing mandrel 1110. When high-pressure water passes through the flow channel 1010, a barrier is formed by the high-pressure sealing water film 1200 between the sealing mandrel 1110 and the mandrel sealing sleeve 1120, which can achieve self-sealing against water vapor, thereby realizing the replacement of the original mechanical seal with a high-pressure water seal.

[0057] The drive unit 2000 is either an electric motor 2010 or a pneumatic motor 2020. In use, the drive unit 2000 is coupled to the main body 1000 of the papermaking equipment sealing water film cleaning assembly through the transmission device 2030 and drives the main body 1000 of the papermaking equipment sealing water film cleaning assembly to move. High-pressure water is sprayed out from the spray point 1030 through the flow channel 1010 as the main body 1000 rotates to the felt or mesh located below the spray point 1030.

[0058] like Figure 6 and Figure 7As shown, the papermaking equipment sealing water film cleaning assembly, together with the drive device 2000, is driven as a whole by the moving mechanism 3000. The moving mechanism 3000 drives the papermaking equipment sealing water film cleaning assembly, together with the drive device 2000, to move along the preset running direction.

[0059] The preset operating direction of the sealing water film cleaning component (also known as the cleaning nozzle or cleaning nozzle assembly) of the papermaking equipment is perpendicular to the operating direction of the mesh or felt.

[0060] In humid environments, motor 2010 is prone to failure. The cleaning of wire mesh or felt in papermaking processes requires high-pressure water spraying, making a humid working environment unavoidable. Motor 2010 failure affects the operation of the sealing water film cleaning components in papermaking equipment. If motor 2010 fails due to a humid environment during the cleaning of the wire mesh or felt in the papermaking process, it can easily cause production stoppages. While using a high-specification waterproof motor 2010 might alleviate the problem of motor 2010 failure due to moisture, in the specific field of papermaking, especially in production areas where paper product prices cannot be easily increased, using a high-specification waterproof motor 2010 undoubtedly increases the cost of the equipment itself. Furthermore, motor 2010 operates in a dynamic environment, and frequent movement and continuous exposure to humidity can affect its waterproof function. Replacing motor 2010 on multiple production lines would increase operating and maintenance costs.

[0061] In the papermaking industry, where high quality is required and selling price cannot be high, using an expensive electric motor 2010 as the drive unit 2000 for the sealing water film cleaning assembly of the papermaking equipment is clearly disadvantageous. Therefore, a pneumatic motor 2020 is preferred as the drive unit 2000 for the main body 1000 of the sealing water film cleaning assembly of the papermaking equipment. By replacing the electric motor 2010 with the pneumatic motor 2020, the main body 1000 of the sealing water film cleaning assembly of the papermaking equipment is driven by the pneumatic motor 2020. The pneumatic motor 2020 is suitable for operation in humid environments.

[0062] The stability of the sealing mandrel 1110 in the sealing water film cleaning component of papermaking equipment plays an important role in the sealing effect and the service life of the mandrel. Instability of the sealing mandrel 1110 will have a negative effect on the sealing effect and will also be detrimental to the service life of the mandrel.

[0063] The nozzle rotating spindle 1300 is fitted over the mandrel sealing sleeve 1120. If the nozzle rotating spindle 1300 is not stable enough, it will affect the mandrel sealing sleeve 1120 and thus affect the stability of the sealing mandrel 1110.

[0064] To improve the stability of the nozzle rotating main shaft 1300, three main bearings 1400 are provided in the direction parallel to the flow channel 1010.

[0065] The rigidity of the nozzle rotating spindle 1300 is enhanced by arranging three main bearings 1400 to improve the rotational accuracy between the spindle and the sealing mandrel 1110, thereby ensuring a long-term stable sealing effect and extending the service life of the mandrel.

[0066] The nozzle rotating spindle 1300 and the sealing mandrel 1110 are provided with annular sealing components, including an O-ring 1310 and a skeleton sealing ring 1320, which ensure sealing performance.

[0067] The sealing mandrel 1110 is preferably a tapered sealing mandrel 1110. The top of the mandrel sealing sleeve 1120, which is fitted over the sealing mandrel 1110, is pressed and fixed by a compression nut 1130.

[0068] As a component of the cleaning nozzle, if the water spray nozzle 1030 has insufficient water flow stability, it will also affect the cleaning effect and production efficiency. For example, if there is a brief interruption in the water flow, it will result in insufficient cleaning.

[0069] The water outlet 1031 of the water spray point 1030 is equipped with a water spray plate 1500, which is preferably a rotating water spray plate 1500.

[0070] The 1500 spray plate has a 1510 protective cover.

[0071] The water outlet 1031 is conical, and the conical water outlet 1031 is fitted with a conical seal.

[0072] The inner cavity of the water spray plate 1500 is a high-pressure water buffer chamber 1520. The high-pressure water buffer chamber 1520 serves as a buffer structure for the water spray plate 1500. Multiple spray holes are provided at the end of the high-pressure water buffer chamber 1520 away from the flow channel 1010.

[0073] like Figure 3 As shown, a high-pressure water buffer chamber 1520 is added inside the water spray plate 1500, which is equivalent to adding an energy storage device in front of the water spray nozzle (water spray point 1030), improving the stability of the high-pressure water. Even if there is a brief water supply jam at one end of the high-pressure water connector 1020, the water flow can be ensured to continue.

[0074] In use, water flows from the high-pressure water connector 1020 through the flow channel 1010 to the spray point 1030. High-pressure water then flows from the spray point 1030 into the high-pressure water buffer chamber 1520. As high-pressure water continuously flows into the high-pressure water buffer chamber 1520, it quickly fills, and the high-pressure water is then ejected from multiple nozzles. Even when a brief water supply interruption occurs at one end of the high-pressure water connector 1020, because the high-pressure water buffer chamber 1520 is filled with high-pressure water (it can be considered an energy storage device), high-pressure water can still be ejected from the nozzles of the high-pressure water buffer chamber 1520 even during this brief interruption.

[0075] In existing technologies in this industry, the water spray plate 1500 is often connected to the water outlet 1031 via bolts. If the bolts come loose, they can fall and get caught in the production line, affecting the papermaking process and severely damaging the paper products, leading to significant economic losses. Bolts falling into machinery can also cause equipment malfunctions.

[0076] The water spray plate 1500 is boltless, and the connection between the water spray plate 1500 and the water outlet 1031 is boltless, which can prevent the bolts from falling off.

[0077] By adopting a boltless fastening spray disc 1500 structure, replacing the original bolted connections in the industry, which are prone to bolt detachment and getting caught in machinery, causing huge losses, this is a new application in the field of paper forming wire cleaning.

[0078] The papermaking equipment sealing water film cleaning assembly, together with the drive unit 2000, is driven as a whole by the moving mechanism 3000. The moving mechanism 3000 drives the papermaking equipment sealing water film cleaning assembly, together with the drive unit 2000, to move along the preset running direction.

[0079] like Figure 8-9 As shown, the moving mechanism 3000 is generally powered by a chain 3010, which transmits power to drive the driven components. Bearings are also involved inside the moving mechanism 3000. When the moving mechanism 3000 moves smoothly in the guide rail, it is not easy for the bearings to break or the chain 3010 to break.

[0080] However, the moving mechanism 3000 often has a large span. When the pulley 3120 of the moving mechanism 3000 travels in a guide rail with a large span, if there is an obstruction, the bearing may be damaged or the chain 3010 may break. Guide rails with a small span are less likely to affect movement, but guide rails with a large span are not easy to ensure will not deform after long-term use. Deformation of the guide rail can easily affect the movement of the moving mechanism 3000. When the guide rail deforms to a certain extent but does not affect the load-bearing capacity, the guide rail will not break, but it will hinder the movement of the moving mechanism 3000. Specifically, the movement of the entire cleaning assembly often relies on the moving mechanism 3000, which consists of a movable chain 3010, four pulleys 3120, and upper and lower guide rails. When the guide rail deforms and becomes smaller, the pulley 3120 of the moving mechanism 3000 may get stuck, causing the bearing to be damaged and the chain 3010 to break.

[0081] By employing a self-aligning cloth cleaning mechanism, the upper pulley 3120 mechanism can swing freely within the guide rail, preventing all four wheels from getting stuck even when the track narrows. With this self-aligning cloth cleaning mechanism, the upper pulley 3120 is changed from a pair to a single pulley, allowing it to swing freely within the guide rail range, and the lower pulley 3120 swings accordingly.

[0082] like Figure 10-11 As shown, the self-aligning fabric cleaning mechanism includes a movable trolley 3100, which is connected to and drives the cleaning assembly via a connecting arm 3130. A pulley 3120 is located on the top of the movable trolley 3100, and the rotation direction of the top pulley 3120 is parallel to the ground. This allows the movable trolley 3100 to have freedom of movement above it; even if the guide rail deforms due to its large span, it can swing with the deformation of the guide rail, thus forming the self-aligning fabric cleaning machine moving mechanism 3000. This avoids the need for at least one pair of pulleys 3120 located below the movable trolley 3100, whose rotation direction is perpendicular to the ground. The axle of the pulley 3120 is equipped with a wheel bearing, which is either a ball bearing or a tapered bearing, preferably a tapered bearing.

[0083] Specifically, the bearings corresponding to the upper pulley 3120 and the lower pulley 3120 are changed from ball bearings in the prior art to tapered roller bearings 3110. Compared with ball bearings, tapered roller bearings 3110 can provide more axial and radial forces.

[0084] More specifically, the tapered roller bearing 3110 is a separable bearing, with both its inner and outer rings having tapered raceways. This type of bearing is classified into different structural forms, such as single-row, double-row, and four-row tapered roller bearings 3110, based on the number of rows of rollers. A single-row tapered roller bearing 3110 can withstand radial loads and axial loads in a single direction. When the bearing is under radial load, an axial component force will be generated, so another bearing capable of withstanding the opposite axial force is needed to balance it. Therefore, compared to ball bearings, the tapered roller bearing 3110 can provide more sufficient axial and radial forces.

[0085] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A spring-free adjustable sealing water film cleaning nozzle for papermaking equipment, comprising a main body and a driving device for driving the main body; characterized in that: The main body consists of a pipe body, a sealing mandrel located inside the pipe body, and a mandrel sealing sleeve sleeved outside the sealing mandrel; a high-pressure sealing water film is formed between the sealing mandrel and the mandrel sealing sleeve, creating a barrier; a nozzle rotating main shaft is sleeved on the mandrel sealing sleeve; a flow channel is provided inside the sealing mandrel; one end of the pipe body is connected to a high-pressure water connector, and the end of the pipe body away from the high-pressure water connector is the water spray point; wherein, multiple main bearings are provided in the direction parallel to the flow channel on the nozzle rotating main shaft.

2. The springless conditioning seal water film cleaning shower for papermaking equipment according to claim 1, characterized in that: The flow channel connects the high-pressure water connector, the nozzle rotating main shaft, and the water spray point; wherein the water spray point is connected to the pipe body without bolts.

3. The springless conditioning seal water film cleaning shower for papermaking equipment according to claim 1, characterized in that: The thickness of the high-pressure sealing water film is less than 0.6 mm.

4. The springless conditioning seal water film washing shower head for papermaking equipment according to claim 1, characterized in that: The driving device is a pneumatic motor or an electric motor; the driving device is coupled to the main body through a transmission device and drives the main body to move.

5. The springless conditioning seal water film washing shower head for papermaking equipment according to claim 1, characterized in that: The nozzle rotating shaft is provided with three main bearings in a direction parallel to the flow channel.

6. The springless conditioning seal water film washing showerhead for papermaking equipment according to claim 1, characterized in that: The papermaking equipment sealing water film cleaning component is driven as a whole by a moving mechanism, which drives the papermaking equipment sealing water film cleaning component, together with the drive device, to move along a preset running direction.

7. The springless conditioning seal water film cleaning shower of claim 6 wherein: The preset running direction is perpendicular to the running direction of the mesh or felt.

8. The springless conditioning seal water film washing showerhead for papermaking equipment according to claim 1, characterized in that: The nozzle rotating spindle and the sealing mandrel are equipped with annular sealing components, which include an O-ring and a skeleton sealing ring; the sealing mandrel is a tapered sealing mandrel; the top of the mandrel sealing sleeve fitted over the sealing mandrel is pressed and fixed by a clamping nut.

9. The springless conditioning seal water film washing showerhead for papermaking equipment according to claim 1, characterized in that: The water outlet of the spray nozzle is cone-shaped.

10. The springless conditioning seal water film cleaning showerhead of claim 9, wherein: The water outlet is fitted with a conical seal; the sealing mandrel is a conical sealing mandrel.

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