Pulp outlet structure of headbox

Abstract

The utility model relates to the technical field of papermaking, in particular to a pulp outlet structure of a headbox, which comprises a box body and a pulp outlet pipe arranged in the box body, the box body is of a hollow structure, an upper lip plate and a lower lip plate are fixedly arranged on the box body, one side of the upper lip plate and one side of the lower lip plate are fixedly connected onto the inner side wall of the box body, a pulp outlet is arranged on the upper lip plate, and the pulp outlet pipe is arranged on the lower lip plate. The soybean milk outlet is arranged corresponding to a gap between the upper lip plate and the lower lip plate, the soybean milk outlet pipe is located between the upper lip plate and the lower lip plate, two width limiting plates are arranged between the upper lip plate and the lower lip plate in a relative sliding mode in the length direction of the soybean milk outlet pipe, and one ends of the two width limiting plates extend to the soybean milk outlet. The width limiting plates capable of relatively moving are arranged between the upper lip plate and the lower lip plate, the width limiting plates are driven by the guide plates to move, and the distance between the two width limiting plates can be adjusted according to the width of a forming net under the action of reducing and guiding paper pulp, so that the pulp outlet width of a pulp outlet is changed, and the pulp outlet width is changed. The pulp outlet structure of the headbox can be suitable for forming nets of more specifications.

Description

TECHNICAL FIELD

[0001] The utility model relates to papermaking technical field, concretely is a kind of out pulp structure of headbox. BACKGROUND

[0002] With the continuous progress of papermaking technology, the speed of papermaking machine is gradually increased, and higher requirements are put forward for the transportation and distribution of paper pulp. In order to meet these requirements, an equipment capable of stably and uniformly transporting paper pulp is needed, therefore, the headbox comes into being.

[0003] The existing headbox will discharge paper pulp stably and efficiently from the pulp outlet through the unique pulp outlet structure in its interior when in use, and then the paper pulp will fall on the forming wire to prepare for the production of paper. But nowadays, the types and specifications of paper are various, and different sizes of forming wires are needed to receive paper pulp when producing different papers, and the width of the pulp outlet of the headbox is usually fixed, so after replacing the forming wire, different specifications of headboxes or different specifications of pulp outlets need to be replaced to ensure that the paper pulp will not flow out of the forming wire. This way is complicated and slow, which may affect the production efficiency of paper. Therefore, we propose a kind of out pulp structure of headbox to solve the above problems. SUMMARY

[0004] The utility model aims at providing a kind of out pulp structure of headbox, for solving the problems presented in the above background art.

[0005] The utility model is realized by the following technical solutions: a kind of out pulp structure of headbox, including box and the out pulp pipe being set in the box, the box is internally hollow structure, the upper lip board and lower lip board are fixedly arranged on the box, one side of the upper lip board and lower lip board is fixedly connected on the inner side wall of the box, the upper lip board is provided with pulp outlet, the pulp outlet is set corresponding to the gap between the upper lip board and lower lip board, the out pulp pipe is located between the upper lip board and lower lip board, two width-limiting plates are slidably arranged between the upper lip board and lower lip board along the length direction of the out pulp pipe, one end of the two width-limiting plates extends to the pulp outlet.

[0006] Optionally, two groups of driving assemblies are further arranged between the upper lip board and the lower lip board, and the two groups of driving assemblies are respectively arranged corresponding to the two width-limiting plates; the two groups of driving assemblies are respectively used to drive the corresponding width-limiting plates to slide.

[0007] Optionally, the two groups of driving assemblies include two fixed plates fixedly arranged between the upper lip board and the lower lip board, the fixed plates are arranged in the direction towards the pulp outlet, and a sliding block is slidably connected to the opposite side surface of each of the two fixed plates in the direction towards the pulp outlet, a guide plate is hingedly arranged on the sliding block, and one end of the guide plate away from the sliding block is rotatably connected to the width-limiting plate.

[0008] Optionally, the width limiting plate is L-shaped, one side plate of the width limiting plate is slidably connected to the fixed plate along the length direction of the pulp outlet pipe, the guide plate is rotatably connected to the overlapping position of the two side plates of the width limiting plate, and the bottom of the width limiting plate is sealingly connected between the bottom of the guide plate and the upper surface of the lower lip plate.

[0009] Optionally, the two guide plates are hingedly connected to the upper surface of one end of the corresponding sliding block, the two extension rods are vertically arranged and rotatably connected to the top end of the two extension rods, and the top end of the two extension rods is commonly connected to the driving plate.

[0010] Optionally, the spring beads are arranged on the bottom of the driving plate, and a plurality of limiting holes are formed in the upper surface of the box body along the width direction of the box body and embedded with the spring beads.

[0011] Compared with the prior art, the pulp outlet structure of the headbox has the following advantages

[0012] Beneficial effects:

[0013] The width limiting plate arranged between the upper lip plate and the lower lip plate can be relatively moved, the guide plate drives the width limiting plate to move, the distance between the two width limiting plates can be adjusted according to the width of the forming wire under the action of the pulp reduction guide, the pulp outlet width of the pulp outlet port is changed, the pulp outlet structure of the headbox can be suitable for more specifications of the forming wire, and the pulp outlet width is convenient to adjust. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the maximum width structure of the width limiting plate of the utility model;

[0016] Figure 3 It is a schematic diagram of the relative movement structure of the width limiting plate of the utility model.

[0017] In the drawing: 1, box body; 101, upper lip plate; 102, lower lip plate; 103, pulp outlet port; 104, limiting hole; 2, pulp outlet pipe; 3, width limiting plate; 4, driving assembly; 401, fixed plate; 402, sliding block; 403, guide plate; 5, extension rod; 6, driving plate; 601, spring bead. DETAILED DESCRIPTION

[0018] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0019] Please refer to Figure 1 - Figure 3 A pulp outlet structure of a headbox, comprising a box body 1 and a pulp outlet pipe 2 arranged in the box body 1, the box body 1 is internally hollow, and an upper lip plate 101 and a lower lip plate 102 are fixedly arranged on the box body 1, one side of the upper lip plate 101 and the lower lip plate 102 is fixedly connected to the inner side wall of the box body 1, so that the upper lip plate 101 and the lower lip plate 102 can have supporting force. A pulp outlet opening 103 is arranged on the upper lip plate 101, the pulp outlet opening 103 corresponds to the gap between the upper lip plate 101 and the lower lip plate 102, and the pulp outlet pipe 2 is located between the upper lip plate 101 and the lower lip plate 102, so that the pulp in the pulp outlet pipe 2 flows out and enters between the upper lip plate 101 and the lower lip plate 102, and then is conveyed to the pulp outlet opening 103 and flows out to the forming wire, avoiding the pulp flowing to other places and causing pollution and damage to the box body 1.

[0020] Two width limiting plates 3 are arranged between the upper lip plate 101 and the lower lip plate 102 and slide relative to each other along the length direction of the pulp outlet pipe 2, one end of the two width limiting plates 3 extends to the pulp outlet opening 103, so that the two width limiting plates 3 can change the pulp outlet width of the pulp outlet opening 103 in the process of relative sliding, thereby making the pulp outlet width of the box body 1 applicable to more specifications of the forming wire.

[0021] Further, two groups of driving assemblies 4 are arranged between the upper lip plate 101 and the lower lip plate 102, and the two groups of driving assemblies 4 correspond to the two width limiting plates 3 respectively; the two groups of driving assemblies 4 are respectively used for driving the corresponding width limiting plates 3 to slide.

[0022] The driving assembly 4 will be described in detail as follows:

[0023] The two driving assemblies 4 comprise two fixed plates 401 fixedly arranged between the upper lip plate 101 and the lower lip plate 102, the fixed plates 401 are arranged in the direction towards the pulp outlet 103, the opposite sides of the two fixed plates 401 are slidably connected with sliding blocks 402 in the direction towards the pulp outlet 103, the sliding blocks 402 are hingedly provided with guide plates 403, one end of the guide plates 403 away from the sliding blocks 402 is rotatably connected to the width limiting plate 3, so that the one end of the guide plates 403 hingedly arranged on the sliding blocks 402 can only slide along the length direction of the fixed plates 401, so that the other end of the guide plates 403 can move in the left-right direction, and the other end of the guide plates 403 is rotatably connected to the width limiting plate 3, so that the movement of the guide plates 403 will also drive the width limiting plate 3 to move simultaneously, thereby adjusting the distance between the two width limiting plates 3.

[0024] Specifically, the width limiting plate 3 is L-shaped, one side plate of the width limiting plate 3 is slidably connected to the fixed plate 401 along the length direction of the pulp outlet pipe 2, the guide plates 403 are rotatably connected to the overlapping position of the two side plates of the width limiting plate 3, and the bottom of the guide plates 403 and the upper surface of the lower lip plate 102 are sealingly connected, so that the one end of the guide plates 403 rotatably connected to the width limiting plate 3 can only move left and right along the length direction of the pulp outlet pipe 2, thereby synchronously driving the width limiting plate 3 to move left and right along the length direction of the pulp outlet pipe 2. Moreover, when the guide plates 403 change their movement state, they also play a role in guiding the flow of pulp, so that the pulp can flow to the pulp outlet 103 under the action of the guide plates 403 and the width limiting plate 3.

[0025] In order to make it more convenient for the staff to control the movement of the width limiting plate 3, the upper surface of the one end of the two guide plates 403 hingedly arranged on the corresponding sliding blocks 402 is rotatably connected with an extension rod 5 arranged in the vertical direction, the top ends of the two extension rods 5 extend above the box body 1, and the top ends of the two extension rods 5 are jointly connected with a driving plate 6, so that the user can control the two extension rods 5 to move along the width direction of the box body 1 by pulling or pushing the driving plate 6, and the extension rods 5 will drive the one end of the two guide plates 403 hingedly arranged on the sliding blocks 402 to move along the length direction of the fixed plates 401, so that the other end of the guide plates 403 drives the two width limiting plates 3 to move closer to or away from each other, thereby adjusting the pulp outlet width of the pulp outlet 103.

[0026] Further, the bottom of the driving plate 6 is fixedly provided with a spring impact bead 601, and a plurality of limiting holes 104 for embedding the spring impact bead 601 are formed in the upper surface of the box body 1 along the width direction of the box body 1, so that the user can fix the driving plate 6 after moving it, thereby fixing the pulp outlet width of the pulp outlet 103.

[0027] The working principle and use process of the utility model: when the pulp width of the pulp outlet 103 needs to be changed, the driving plate 6 is pulled or pushed, the spring ball 601 is moved from one limiting hole 104 to another limiting hole 104 to complete the fixation of the driving plate 6, in this process, the driving plate 6 drives the two extension rods 5 to move simultaneously, the extension rod 5 drives the two guide plates 403 hinged to one end of the sliding block 402 to move along the length direction of the fixed plate 401, so that the other end of the guide plate 403 drives the two width limiting plates 3 to approach or move away from each other, the adjustment of the pulp width of the pulp outlet 103 is realized, the pulp structure of the box body 1 can be suitable for more specifications of the forming net, and the adjustment of the pulp width is convenient and fast.

[0028] It should be noted that in this document, the terms "first" and "second" and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by an "including a" statement does not exclude the existence of additional identical elements in the process, method, article, or apparatus including the element.

[0029] Although embodiments of the utility model have been shown and described, it will be apparent to those having ordinary skill in the art that a number of changes, modifications, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A headbox flow structure, comprising a headbox (1) and a flow duct (2) arranged in the headbox (1), characterized in that: The box (1) is internally hollow, the upper lip plate (101) and the lower lip plate (102) are fixedly connected to the inner side wall of the box (1), the slurry outlet (103) is arranged on the upper lip plate (101), the slurry outlet (103) corresponds to the gap between the upper lip plate (101) and the lower lip plate (102), the slurry outlet pipe (2) is located between the upper lip plate (101) and the lower lip plate (102), two width limiting plates (3) are arranged between the upper lip plate (101) and the lower lip plate (102) and slide along the length direction of the slurry outlet pipe (2), and one end of the two width limiting plates (3) extends to the slurry outlet (103).

2. A flow box outlet structure according to claim 1, characterized in that: Two groups of driving assemblies (4) are arranged between the upper lip plate (101) and the lower lip plate (102), and the two groups of driving assemblies (4) correspond to the two width limiting plates (3) respectively; the two groups of driving assemblies (4) are used for driving the corresponding width limiting plates (3) to slide.

3. A flow box outlet structure according to claim 2, characterized in that: The two groups of driving assemblies (4) include two fixed plates (401) fixedly arranged between the upper lip plate (101) and the lower lip plate (102), the fixed plates (401) are arranged in the direction towards the slurry outlet (103), the opposite sides of the two fixed plates (401) are slidably connected with sliding blocks (402) in the direction towards the slurry outlet (103), the sliding blocks (402) are hingedly connected with guide plates (403), and one end of the guide plates (403) away from the sliding blocks (402) is rotatably connected with the width limiting plates (3).

4. A flow box outlet structure according to claim 3, wherein: The width limiting plate (3) is L-shaped, one side plate of the width limiting plate (3) is slidably connected with the fixed plate (401) in the length direction of the slurry outlet pipe (2), the guide plates (403) are rotatably connected at the overlapping position of the two side plates of the width limiting plate (3), and the bottom of the width limiting plate (3) is sealingly connected between the bottom of the guide plates (403) and the upper surface of the lower lip plate (102).

5. The flow box outlet structure of claim 3, wherein: The two guide plates (403) are hingedly connected to the top surfaces of one end of the corresponding sliding blocks (402), and the top ends of the two extension rods (5) are rotatably connected with the driving plate (6).

6. A flow box outlet structure according to claim 5, wherein: The bottom of the driving plate (6) is fixedly provided with a spring impact bead (601), and the upper surface of the box (1) is provided with a plurality of limiting holes (104) for embedding the spring impact bead (601) in the width direction of the box (1).

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