Up-flow paper pulp pressure screening device

Abstract

The up-flow type paper pulp pressure screening device comprises a supporting base, a flow gathering assembly is fixedly connected to the top end of the supporting base, the top end of the flow gathering assembly is of a one-way opening structure, a servo motor is further installed on the top end face of the supporting base, and an output shaft is arranged at the bottom end of the servo motor. The spiral flow rising assembly is arranged, when the screen drum assembly rotates, paper pulp can be actively pushed to flow upwards, the mode that the paper pulp is conveyed purely depending on centrifugal force is changed, the conveying efficiency of the paper pulp in the screen drum is greatly improved, and then the overall screening efficiency is improved. And the paper pulp can be screened more sufficiently, and the screening quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, specifically to an upflow pulp pressure screening device. Background Technology

[0002] In the papermaking industry, pulp screening is a crucial step in ensuring paper quality. An existing patent, an upflow pressure screen (patent publication number CN214362523U), includes a housing with a pressure screening mechanism. This mechanism comprises: a partition on the inner wall of the housing; a screen plate on the inner wall of the housing and above the partition; a feed pipe on the outer wall of the housing between the partition and the screen plate; a rotating shaft vertically connected to the partition; auger blades wound around the rotating shaft; a motor on the bottom wall of the housing for driving the rotating shaft; a negative pressure mechanism at the top of the housing; and a discharge mechanism above the screen plate. The screen plate has a through hole in its center, through which the rotating shaft passes vertically. This application provides an upflow pressure screen that utilizes different rotating shaft speeds to separate heavy and light pulp sequentially onto a screen plate with perforations, allowing residual pulp on the pulp to be collected again, thereby reducing pulp waste.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: When existing screening devices are used, the lack of an effective bolt-guided pulp conveying structure results in low efficiency when relying on centrifugal force to convey the pulp during the screening process, affecting the normal screening effect. Therefore, we propose an upflow pulp pressure screening device to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an upflow pulp pressure screening device, which solves the problem that existing screening devices, due to the lack of an effective bolt-guided pulp conveying structure, are inefficient when relying on centrifugal force to convey pulp during the screening process, thus affecting the normal screening effect.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an upflow pulp pressure screening device, including a support base, a flow-gathering component fixedly connected to the top of the support base, the flow-gathering component having a one-way opening structure at the top, a servo motor also being installed on the top surface of the support base, an output shaft being provided at the bottom of the servo motor, and a pulley assembly being installed on the output shaft;

[0006] The inner side of the support base is rotatably connected to a connecting shaft, and a pulley assembly is coaxially installed at the bottom end of the connecting shaft. A belt assembly is also installed on the outer side of the two pulley assemblies. A screen cylinder assembly is fixedly connected to the top end of the connecting shaft. The screen cylinder assembly has a screen hole assembly arranged in a ring array inside. A flow riser assembly is also fixedly connected to the inner side of the screen cylinder assembly.

[0007] Preferably, the current boosting component has a spiral structure, and a ring-shaped connecting plate is fixedly connected to the outside of the support base. The connecting plate has mounting holes arranged in a ring array inside.

[0008] Preferably, a flow-gathering plate is installed on the inner side of the flow-gathering component, the flow-gathering plate is connected to the screen cylinder component, and a feed pipe is fixedly connected to the left side of the outer peripheral surface of the flow-gathering plate.

[0009] Preferably, a fine material discharge pipe is fixedly connected to the right side of the outer peripheral surface of the flow-gathering component. The fine material discharge pipe is connected to the cover mechanism but not to the screen cylinder assembly.

[0010] Preferably, a connecting plate is also fixedly connected to the outer peripheral surface of the cover mechanism, and the flow-gathering component is connected and limited to the cover mechanism by a fixing bolt.

[0011] Preferably, there are two flow-gathering plates, with the other flow-gathering plate fixedly connected to the inner top surface of the cover mechanism, and a coarse material outlet fixedly connected to the right side of the outer peripheral surface of the flow-gathering plate.

[0012] Preferably, a pressure relief pipe is fixedly connected to the top surface of the cover mechanism, and a pressure relief valve is fixedly connected to the outside of the pressure relief pipe. Beneficial effects

[0013] This invention provides an upflow pulp pressure screening device. Compared with the prior art, it has the following advantages:

[0014] This upflow pulp pressure screening device, by setting up a spiral upflow component, can actively push the pulp upward when the screen cylinder component rotates. This changes the way pulp is transported by relying solely on centrifugal force, greatly improving the conveying efficiency of pulp in the screen cylinder, thereby improving the overall screening efficiency, allowing the pulp to be screened more fully, and improving the screening quality.

[0015] This upflow pulp pressure screening device, through the coordinated operation of components such as the flow-gathering assembly, flow-gathering plate, feed pipe, fine material discharge pipe, coarse material outlet, and cover mechanism, achieves orderly feeding of pulp and separate discharge of fine and coarse materials, making the entire screening process more rational and efficient. At the same time, the setting of pressure relief pipe and pressure relief valve ensures the safety and stability of the device's operation, avoids damage to the equipment due to excessive internal pressure, and extends the service life of the device. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the pressure screening device of this utility model after being cut apart;

[0017] Figure 2 This is a schematic diagram of the axial side view of the pressure screening device of this utility model;

[0018] Figure 3 This is a top view of the pressure screening device of this utility model;

[0019] Figure 4 This is a side view of the pressure screening device of this utility model.

[0020] Figure 5 This is a schematic diagram of the combined structure of the screen cylinder assembly and screen hole assembly of the pressure screening device of this utility model;

[0021] Figure 6 This is a front view schematic diagram of the pressure screening device of this utility model.

[0022] In the diagram: 1. Support base; 101. Concentrating component; 1011. Connecting plate; 1012. Feed pipe; 1013. Fine material discharge pipe; 2. Servo motor; 201. Pulley assembly; 2011. Belt assembly; 2012. Connecting shaft; 2013. Screen cylinder assembly; 2014. Screen hole assembly; 2015. Flow boosting component; 3. Cover mechanism; 301. Concentrating plate; 3011. Coarse material outlet; 3012. Pressure relief pipe; 3013. Pressure relief valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 This utility model provides a technical solution: an upflow pulp pressure screening device, including a support base 1, a flow-gathering component 101 fixedly connected to the top of the support base 1, the flow-gathering component 101 having a one-way opening structure at the top, a servo motor 2 also installed on the top surface of the support base 1, an output shaft provided at the bottom of the servo motor 2, and a pulley assembly 201 installed on the output shaft;

[0025] A connecting shaft 2012 is rotatably connected to the inner side of the support base 1. A pulley assembly 201 is also coaxially mounted at the bottom end of the connecting shaft 2012. A belt assembly 2011 is also mounted on the outer side of the two pulley assemblies 201. A screen cylinder assembly 2013 is fixedly connected to the top end of the connecting shaft 2012. A screen hole assembly 2014 is arranged in a ring array inside the screen cylinder assembly 2013. A flow riser assembly 2015 is also fixedly connected to the inner side of the screen cylinder assembly 2013.

[0026] Through the coordinated arrangement of the support base 1, servo motor 2, pulley assembly 201, connecting shaft 2012, belt assembly 2011, screen cylinder assembly 2013, screen hole assembly 2014 and flow booster assembly 2015, the servo motor 2 can drive the screen cylinder assembly 2013 to rotate, thereby realizing the screening of pulp, and the flow booster assembly 2015 can assist in pulp conveying.

[0027] See Figures 1-3 The current booster assembly 2015 has a spiral structure, and a ring-shaped connecting plate 1011 is fixedly connected to the outside of the support base 1. The connecting plate 1011 has mounting holes arranged in a ring array inside.

[0028] By designing the riser assembly 2015 as a spiral structure, and in conjunction with the connecting plate 1011 with mounting holes on the outer side of the support base 1, the spiral riser assembly 2015 can guide the slurry to rise more efficiently, while the connecting plate 1011 facilitates the installation and fixation of the device.

[0029] See Figures 2-4 A flow-gathering plate 301 is installed on the inner side of the flow-gathering component 101. The flow-gathering plate 301 is connected to the screen cylinder component 2013, and a feed pipe 1012 is fixedly connected to the left side of the outer peripheral surface of the flow-gathering plate 301.

[0030] By installing a converging plate 301 inside the converging component 101, the converging plate 301 is connected to the screen cylinder component 2013 and is provided with a feed pipe 1012. This allows the pulp to flow smoothly into the screen cylinder component 2013 after entering the converging plate 301 through the feed pipe 1012, thus achieving orderly feeding of the pulp.

[0031] See Figures 5-6 A fine material discharge pipe 1013 is fixedly connected to the right side of the outer peripheral surface of the flow-gathering component 101. The fine material discharge pipe 1013 is connected to the cover mechanism 3 but not to the screen cylinder assembly 2013.

[0032] The fine material discharge pipe 1013 is connected to the right side of the outer peripheral surface of the flow-gathering component 101. The fine material discharge pipe 1013 is connected to the cover mechanism 3 but not to the screen cylinder assembly 2013. This allows the screened fine material to be discharged to the cover mechanism 3 in a timely manner, preventing the fine material from accumulating in the screen cylinder assembly 2013 and affecting the screening effect.

[0033] See Figures 1-2 A connecting plate 1011 is also fixedly connected to the outer peripheral surface of the cover mechanism 3, and the flow-concentrating component 101 is connected and limited to the cover mechanism 3 by a fixing bolt;

[0034] The outer circumferential surface of the cover mechanism 3 has a connecting plate 1011, which is connected and limited to the flow-concentrating component 101 by a fixing bolt, ensuring the stability of the connection between the flow-concentrating component 101 and the cover mechanism 3, making the entire device structure stable and reliable in operation.

[0035] See Figures 5-6 There are two flow-gathering plates 301. The other flow-gathering plate 301 is fixedly connected to the inner top surface of the cover mechanism 3. The coarse material outlet 3011 is fixedly connected to the right side of the outer peripheral surface of the flow-gathering plate 301.

[0036] With the setting of two flow-collecting plates 301, and the flow-collecting plate 301 located on the top surface inside the cover mechanism 3 is provided with a coarse material outlet 3011, the screened coarse material can be collected and discharged through the coarse material outlet 3011, which facilitates the separate processing of materials of different particle sizes.

[0037] See Figures 1-2 A pressure relief pipe 3012 is fixedly connected to the top surface of the cover mechanism 3, and a pressure relief valve 3013 is fixedly connected to the outside of the pressure relief pipe 3012.

[0038] The pressure relief pipe 3012 and pressure relief valve 3013 on the top surface of the cover mechanism 3 can release pressure in time when the internal pressure of the device is too high, ensuring the safe and stable operation of the device and preventing damage to the equipment due to excessive pressure.

[0039] When in operation, the power supply of servo motor 2 is first turned on, and servo motor 2 starts to work. The bottom output shaft of servo motor 2 rotates, driving the pulley assembly 201 mounted on it to rotate. Since the bottom end of the connecting shaft 2012 rotatably connected to the inner side of the support base 1 is coaxially mounted with pulley assembly 201, and belt assembly 2011 is mounted on the outer side of the two pulley assemblies 201, according to the belt drive principle, the rotation of pulley assembly 201 on the output shaft of servo motor 2 is transmitted to pulley assembly 201 at the bottom end of connecting shaft 2012 through belt assembly 2011, thereby driving connecting shaft 2012 to rotate.

[0040] The top of the connecting shaft 2012 is fixedly connected to the screen cylinder assembly 2013, so the rotation of the connecting shaft 2012 will drive the screen cylinder assembly 2013 to rotate synchronously. The pulp enters from the feed pipe 1012, which is connected to the left side of the outer circumference of the concentrating plate 301. The concentrating plate 301 is in communication with the screen cylinder assembly 2013, and the pulp flows into the screen cylinder assembly 2013. The screen cylinder assembly 2013 has screen hole components 2014 arranged in a ring array inside. During the rotation of the screen cylinder assembly 2013, fine materials that meet the aperture requirements of the screen hole components 2014 will be screened out through the screen holes.

[0041] The rising component 2015, which is fixedly connected to the inner side of the screen cylinder assembly 2013, has a spiral structure. When the screen cylinder assembly 2013 rotates, the rising component 2015 also rotates. The spiral rising component 2015 can push the pulp upward and assist the pulp in the conveying of the pulp in the screen cylinder assembly 2013, so that the pulp can come into fuller contact with the screen hole assembly 2014 and improve the screening efficiency.

[0042] The screened fine material is discharged through the fine material discharge pipe 1013 fixedly connected to the right side of the outer peripheral surface of the flow-gathering component 101. The fine material discharge pipe 1013 is connected to the cover mechanism 3, but not directly connected to the screen cylinder assembly 2013, to ensure that the fine material can smoothly enter the cover mechanism 3 and avoid the fine material from accumulating in the screen cylinder assembly 2013.

[0043] Coarse material that does not pass through the screen holes in the screen cylinder assembly 2013 will gradually move upward as the screen cylinder rotates, and eventually reach the flow-gathering plate 301 located on the top surface inside the cover mechanism 3. The right side of the outer peripheral surface of the flow-gathering plate 301 is fixedly connected to the coarse material outlet 3011, and the coarse material is discharged through the coarse material outlet 3011.

[0044] During the operation of the device, if the internal pressure is too high, the pressure relief pipe 3012 fixedly connected to the top surface of the cover mechanism 3 and the pressure relief valve 3013 fixedly connected to its outer side will play a role. When the pressure reaches the threshold set by the pressure relief valve 3013, the pressure relief valve 3013 opens, and the gas is discharged through the pressure relief pipe 3012, so that the internal pressure of the device is kept within a safe range and the device is kept stable.

[0045] In summary, this device, by incorporating a servo motor 2, can provide stable power output.

[0046] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A rising pulp pressure screen device, comprising a supporting base (1), the top end of the supporting base (1) is fixedly connected with a flow converging assembly (101), the flow converging assembly (101) is a top end one-way opening structure, characterized in that: The top end surface of the support base (1) is also provided with a servo motor (2), and the bottom end of the servo motor (2) is provided with an output shaft, and the output shaft is provided with a pulley assembly (201); The inner side of the support base (1) is rotatably connected with a connecting shaft (2012), and the bottom end of the connecting shaft (2012) is also coaxially provided with a pulley assembly (201), and the outer sides of the two pulley assemblies (201) are also provided with a belt assembly (2011), and the top end of the connecting shaft (2012) is fixedly connected with a sieve cylinder assembly (2013), and the inside of the sieve cylinder assembly (2013) is annularly arranged with sieve hole assemblies (2014), and the inner side of the sieve cylinder assembly (2013) is also fixedly connected with a flow ascending assembly (2015).

2. A rising current pulp pressure screening apparatus according to claim 1, characterized in that The flow ascending assembly (2015) is a spiral structure, and the outer side of the support base (1) is fixedly connected with a connecting plate (1011) in an annular structure, and the inside of the connecting plate (1011) is annularly arranged with mounting holes.

3. A rising current pulp pressure screening apparatus according to claim 1, characterized in that The inner side of the flow converging assembly (101) is provided with a flow converging disc (301), and the flow converging disc (301) penetrates through the sieve cylinder assembly (2013), and the outer peripheral surface of the flow converging disc (301) is fixedly connected with an inlet pipe (1012) on the left side.

4. A rising current pulp pressure screening apparatus according to claim 1, characterized in that The outer peripheral surface of the flow converging assembly (101) is fixedly connected with a fine material discharge pipe (1013) on the right side, and the fine material discharge pipe (1013) penetrates through the cover body mechanism (3) and does not penetrate through the sieve cylinder assembly (2013).

5. A headbox pulp pressure screening apparatus according to claim 4, characterized in that The outer peripheral surface of the cover body mechanism (3) is also fixedly connected with a connecting plate (1011), and the flow converging assembly (101) and the cover body mechanism (3) are connected and limited by the fixing bolt.

6. A rising current pulp pressure screening apparatus according to claim 3, characterized in that The flow converging disc (301) is provided with two, and the other flow converging disc (301) is fixedly connected to the inner top end surface of the cover body mechanism (3), and the outer peripheral surface of the flow converging disc (301) is fixedly connected with a coarse material outlet (3011) on the right side.

7. A headbox pulp pressure screening apparatus according to claim 6, characterized in that The top end surface of the cover body mechanism (3) is fixedly connected with a pressure relief pipe (3012), and the outer side of the pressure relief pipe (3012) is fixedly connected with a pressure relief valve (3013).

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