CN112356420B - Wood is moulded extruder cooling water automatic cycle system - Google Patents
Wood is moulded extruder cooling water automatic cycle system Download PDFInfo
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- CN112356420B CN112356420B CN202011117505.8A CN202011117505A CN112356420B CN 112356420 B CN112356420 B CN 112356420B CN 202011117505 A CN202011117505 A CN 202011117505A CN 112356420 B CN112356420 B CN 112356420B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/275—Recovery or reuse of energy or materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses an automatic cooling water circulating system of a wood-plastic extruder, which comprises a circulating water tank; the automatic water replenishing controller is used for automatically replenishing softened water to the circulating water pool according to the water level; the water pump is used for sending the water in the circulating water tank into an extruder through a water distribution bag to cool and shape the product; the high-temperature water from the extruder enters the circulating water tank again through a water return pipe for multistage sedimentation and filtration, and the circulating water tank is connected with an electric cooling tower for intelligently controlling the water temperature; according to the embodiment of the invention, water is supplied to the circulating water tank through automatic water supply control, the water pump in the circulating water tank is automatically constant in pressure, the product is fed into the extruder through the water distribution bag to be cooled and shaped, and the cooled product flows back to the circulating water tank through the water return pipe, and the electric cooling water tower is automatically started when the temperature exceeds the set temperature, so that the circulating use of cooling water is realized, and the environmental pollution and the waste of water resources are reduced.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment of extruders, in particular to an automatic cooling water circulating system of a wood-plastic extruder.
Background
The extruder belongs to one of the types of plastic machinery, and originates from 18 th century, and the extruder can divide a machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of a screw. The working principle of the extruder is that the materials are fully plasticized and uniformly mixed by the pressure generated by the rotation of the screw rod and then are molded through the neck mold. The wood-plastic board is a high-tech green environment-friendly material which is prepared by uniformly mixing wood as a base material with plastics, processing aids and the like and then heating and extruding the mixture by using die equipment, has the properties and characteristics of the wood and the plastics and can replace the novel composite material of the wood and the plastics. The wood-plastic plate needs to be extruded and molded by an extruder in the production process. The high-temperature formed product extruded from the neck mold of the extruder can be cooled to normal temperature according to a set mode (such as cooling rate) after being cooled by a cooling system, otherwise, the product can crack due to uneven cooling and the like.
The cooling mode of the existing extruder is mainly water cooling, namely a water ring or a water pipe is arranged on the inner side of a heater and is cooled by introduced cooling water, in the existing cooling system, the cooling water achieves the heat dissipation of the extruder through a simple circulating system without considering the influence of the cooling rate, the cooling mode and the like on the wood-plastic material, in the cooling system, after multiple times of circulating cooling, sludge can be generated in the cooling system due to the reason of the system, the sludge can be covered in the cooling system, particularly in the position where the curvature of the cooling system changes frequently, such as the position of a cooling plate, and the covering of the sludge on the cooling plate can influence the cooling parameter control of the cooling system on the wood-plastic material, so that the problem that the quality of the wood-plastic material cannot reach the standard due to the change of the cooling parameter in the cooling process can be solved, in addition, the cooling system inevitably generates loss in the circulating process, and the lost cooling water also influences cooling parameters when reaching a certain amount, so that certain hidden danger exists in the quality of the wood-plastic material.
However, the existing cooling system does not quantitatively take the above problems into consideration, and thus, the control of the cooling parameters of the wood-plastic panel cannot be strictly achieved, thereby causing the production quality of the wood-plastic panel to be uneven.
Disclosure of Invention
The invention aims to provide an automatic cooling water circulating system of a wood-plastic extruder, which aims to solve the technical problems of environmental pollution and water resource waste caused by direct discharge of untreated cooling water in an extruder cooling system in the prior art.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
the utility model provides a wood is moulded extruder cooling water automatic cycle system, includes:
the circulating water tank is provided with a water inlet and a water outlet;
the automatic water replenishing controller is connected with the water inlet of the circulating water tank and controls the water inflow of the water inlet according to the water level in the circulating water tank so that the softened water level in the circulating water tank is in a set range, and the set range is divided into a plurality of water level calibration intervals based on the cooling requirement of the wood-plastic material;
the water pump is connected with the water outlet of the circulating water pool and sends water in the circulating water pool into the extruder through the water distribution bag to cool and shape the product;
wherein, high temperature water in the extruder gets into through wet return precooling the circulating water pond gets into the extruder through the water pump again after carrying out multistage softening and filtering, the circulating water pond is connected with the electric power cooling tower that is used for controlling the temperature, the electric power cooling tower is based on the temperature sensing data of the temperature sensor who sets up in the circulating water pond through setting up and is in temperature in the semiconductor refrigerator regulation circulating water pond in the circulating water pond.
As a preferred scheme of the invention, the automatic water replenishing controller comprises a softened water treatment tank connected with a water inlet pipeline and a water outlet pipeline, wherein a manual valve and an electric valve are installed on the water inlet pipeline, the water outlet pipeline of the softened water treatment tank is communicated with the circulating water tank, a hydraulic position relay used for sensing the water level in the circulating water tank and controlling the electric valve to be opened and closed is installed in the circulating water tank, the adjacent end points of the adjacent water level calibration intervals are continuous, each water level calibration interval is used for calibrating an interval value and a division value, and each water level calibration interval corresponds to wood plastic materials with different specifications according to the calibrated interval value and the division value.
In a preferable embodiment of the present invention, the softened water treatment tank is further communicated with the circulation water tank through an internal circulation pipe to form an internal circulation path, the circulating water tank sends cooling water in the cooling system into the softened water treatment tank through the internal circulating pipe for multi-stage softening and filtering, and then sends the softened water back into the circulating water tank to enter the cooling system, the inside setting of demineralized water treatment tank has set gradually three-layer ion exchange resin layer from top to bottom, each layer the outside of ion exchange resin layer all the cover is equipped with a seal cover, three the seal cover fold in proper order and fix through the screens piece the inner wall of demineralized water treatment tank, each the upper surface and the lower surface of seal cover all set up a plurality of about the flow direction hole of the centre of a circle central symmetry of seal cover upper surface, middle one the seal cover be connected with and be used for driving its rotatory driving piece.
As a preferable scheme of the invention, the clamping piece comprises a ring which is arranged in the softened water treatment tank in an adherence manner, the lower edge of the ring is connected with a bottom support ring for supporting the sealing sleeve, and the upper edge of the ring is detachably provided with a limiting ring for preventing the sealing sleeve from moving upwards.
As a preferable scheme of the invention, the driving part comprises a motor arranged at the top of the softened water treatment tank and a rotating shaft connected with the middle sealing sleeve, the top of the rotating shaft upwards penetrates through the uppermost sealing sleeve and is connected with an output shaft of the motor, clamping grooves are formed in the outer walls of the uppermost sealing sleeve and the lowermost sealing sleeve, and clamping blocks matched with the clamping grooves are arranged in the ring.
As a preferable proposal of the invention, the bottom of the circulating water pool is fixedly provided with a transverse partition wall and a plurality of groups of longitudinal partition walls, one end of the transverse partition wall is fixedly connected with the inner wall of the circulating water pool, a gap is reserved between the other end of the circulating water pool and the other side wall of the circulating water pool, a plurality of groups of longitudinal partition walls penetrate through the transverse partition wall and are intersected with the transverse partition wall, a top partition wall fixedly arranged at the top of the circulating water pool is arranged between two groups of adjacent longitudinal partition walls, a gap is reserved between the longitudinal partition wall and the top surface of the circulating water tank to form an upper water passing hole, a gap is reserved between the top partition wall and the bottom surface of the circulating water tank to form a lower water passing port, the bottom in circulating water pond is provided with the sump pit, horizontal partition wall vertical partition wall and all bury underground on the partition wall in the top and be used for arranging the wall spare of crossing in the sump pit with wasing sewage.
As a preferable scheme of the present invention, the wall passing member includes wall passing holes formed in the bottoms of the transverse partition walls, the longitudinal partition walls, and the top partition wall, the wall passing holes are installed in a long strip shape, a rotating plate is embedded in the wall passing holes, and a driving motor for driving the rotating plate to rotate is disposed at the bottom of the circulating water pool.
As a preferable scheme of the invention, a filter screen for intercepting floating objects is arranged at the upper water passing port, opposite folding edges extend towards the water flow direction from two sides of the filter screen, a bracket for bearing and filtering impurities is connected to the bottom of the filter screen, and the lower ends of the opposite folding edges at two sides extend downwards to form baffles for blocking openings at two ends of the bracket.
As a preferable scheme of the invention, the cross section of the bracket is U-shaped, a leak hole is formed at the bottom of the bracket, an obliquely downward guide plate is arranged in the bracket, and the bracket is positioned below the guide plate to form a stacking cavity for impurities.
As a preferable scheme of the present invention, the water return pipe includes a water inlet section connected to the water outlet of the extruder and a water outlet section connected to the water return port of the circulation water tank, an expansion bend is connected between the water inlet section and the water outlet section, a plurality of blades are installed in the expansion bend through a rotation shaft, an included angle is formed between at least two blades and the water inlet direction of the water inlet section so that the blades rotate under the water flow flushing of the water inlet section, the outer wall of the expansion bend protrudes outward to form a plurality of cooling chambers, and two adjacent cooling chambers are communicated through the flow guide section.
Compared with the prior art, the invention has the following beneficial effects:
(1) in the embodiment of the invention, the cooling tower is replaced by the circulating water tank and the electric water cooling tower, so that the cooling water can be cooled, the temperature of the cooling water can be accurately controlled, the loss of the cooling water can be timely supplemented based on the circulating water tank and the automatic water supplementing controller, and the wood-plastic material can be accurately controlled by double control of the water temperature and the flow rate of the cooling system, so that the wood-plastic material can be cooled within a set range all the time;
(2) in the embodiment of the invention, the cooling water of the cooling system is subjected to secondary treatment in real time, so that softening and filtering treatment are realized in the cooling process, scale ions and insoluble impurities in the cooling water are eliminated, and the influence on the control of cooling parameters of the wood-plastic material caused by the fact that sludge is formed in the cooling system and covers the cooling plate is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic diagram illustrating an overall structure of an automatic circulation system according to an embodiment of the present invention;
fig. 2 is a schematic overall structure diagram of an automatic water replenishing controller according to an embodiment of the present invention;
FIG. 3 is a schematic view of the overall structure of a softened water treatment tank provided by the embodiment of the invention;
FIG. 4 is a partial exploded view of a demineralized water treatment tank provided in accordance with an embodiment of the present invention;
FIG. 5 is a perspective view of a circulation tank according to an embodiment of the present invention;
FIG. 6 is a top view of a circulating water bath provided in an embodiment of the present invention;
FIG. 7 is a front view of a circulation tank provided in an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a wall penetrating member according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a filter screen according to an embodiment of the present invention;
FIG. 10 is a schematic view of a bracket according to an embodiment of the present invention;
FIG. 11 is a schematic structural view of a water return pipe according to an embodiment of the present invention;
fig. 12 is a circuit diagram of an automatic water replenishment controller according to an embodiment of the present invention;
FIG. 13 is a circuit diagram of a demineralized water treatment tank provided in accordance with an embodiment of the present invention;
fig. 14 is a circuit diagram of an electric cooling tower according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
10-circulating water pool; 20-automatic water replenishing controller; 30-a water pump; 40-water dividing; 50-an extruder; 60-a water return pipe; 70-an electric cooling tower;
11-transverse partition walls; 12-longitudinal partition walls; 13-top partition wall; 14-water feeding and water passing holes; 15-discharging a water outlet; 16-a water collecting well; 17-wall passing pieces; 18-a filter screen;
21-a water inlet pipeline; 22-an outlet conduit; 23-softened water treatment tank; 24-a manual valve; 25-an electrically operated valve; 26-a hydraulic relay;
61-water inlet section; 62-water outlet section; 63-expansion bending; 64-a rotating shaft; 65-fan blades; 66-a cooling chamber; 67-a flow guide section;
171-rotating plate; 172-arc fork;
181-folding edges; 182-bracket; 183-guide plate; 184-a stacking chamber; 185-a card-mounting plate; 186-180-degree limiting pieces;
231-ion exchange resin layer; 232-sealing sleeve; 233-a detent; 234-a drive member;
183 a-guide groove;
185 a-side detent portion; 185 b-bottom clamping part
233 a-loop; 233 b-a bottom support ring; 233 c-a spacing ring;
234 a-motor; 234 b-rotating shaft; 234 c-card slot; 234 d-fixture block;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides an automatic cooling water circulation system of a wood-plastic extruder, comprising:
the water circulation system comprises a circulation water tank 10, wherein the circulation water tank 10 is provided with a water inlet and a water outlet;
the automatic water replenishing controller 20 is connected with the water inlet of the circulating water tank 10, and controls the water inflow of the water inlet according to the water level in the circulating water tank 10 so that the softened water level in the circulating water tank 10 is in a set range, wherein the set range is divided into a plurality of water level calibration intervals based on the cooling requirement of the wood plastic material;
the water pump 30 is connected with the water outlet of the circulating water pool 10, and the water pump is used for sending the water in the circulating water pool 10 into the extruder 50 through the water distribution bag 40 to cool and shape the product;
wherein, high temperature water among the extruder 50 gets into through wet return 60 primary cooling the circulation pond 10 gets into again through the water pump after carrying out multistage softening and filtering in the extruder 50, the circulation pond 10 is connected with the electric power cooling tower 70 that is used for controlling the temperature, the electric power cooling tower 70 is based on the temperature sensing data of the temperature sensor who sets up in the circulation pond 10 through setting up the temperature in the semiconductor refrigerator regulation circulation pond 10 in the circulation pond 10.
One of the characteristics of the embodiment of the invention is that the cooling water is recycled, and the working principle is as follows: the automatic water replenishing control 20 is used for replenishing water to the circulating water tank 10, the water pump 30 in the circulating water tank 10 is automatically constant in pressure, the product is sent into the extruder 50 through the water dividing bag 40 to be cooled, cooled and shaped, the cooled product flows back to the circulating water tank 10 through the water return pipe 60 after being cooled, cooling water flows back to the water pump 30 after being softened and filtered in multiple stages and then flows back to the water pump 30 to be repeatedly cooled, the electric water cooling tower 70 is automatically started when the temperature exceeds the set temperature, and the cooling water stops cooling and reciprocating circulation after meeting the use requirement.
The second characteristic of the embodiment of the present invention is that the automatic water supply controller 20 can automatically supply softened water according to the water level in the circulating water tank, specifically, as shown in fig. 2, the automatic water supply controller 20 includes a softened water treatment tank 23 connected with a water inlet pipe 21 and a water outlet pipe 22, the water inlet pipe 21 is provided with a manual valve 24 and an electric valve 25, the water outlet pipe 22 of the softened water treatment tank 23 is communicated with the circulating water tank 10, and the circulating water tank 10 is provided with a hydraulic pressure relay 26 for sensing the water level in the circulating water tank 10 and controlling the electric valve 25 to open and close.
The automatic water replenishing controller 20 adjusts proper water pressure through a manual valve 24, an electric valve 25 is controlled by a hydraulic relay 26, the water is placed into the circulating water tank 10 after being processed by the softened water processing tank 23 at a low water level, the electric valve 25 is automatically closed when the water reaches a high water level, and meanwhile, water can be manually replenished.
Based on the two points, the cooling tower is replaced by combining the circulating water tank and the electric water cooling tower, so that the accurate control of the water temperature is realized, the temperature of cooling water is ensured to be within a controllable temperature range, in addition, the water supply speed of different cooling systems is adapted by controlling the water quantity in the circulating water tank, and the cooling water temperature sent to the wood-plastic material cooling position by the whole system is ensured to be within a controllable range all the time. The above cooling process is exemplified:
when cooling water temperature was too high, can realize the control to cooling water temperature through electric power cooling tower on the one hand, reduce the temperature, on the other hand can also increase the velocity of flow for the velocity of flow increase of cooling water wood-plastic material position is crossed, in order to ensure to reach controllable purpose, when cooling water temperature was crossed lowly, operation process was opposite. Through the control of above-mentioned dual mode, can be accurate inject cooling temperature in controllable within range to avoid exceeding the schematic temperature range of wood-plastic material and influencing the quality of wood-plastic material.
In addition, it should be further explained that the end points close to the adjacent water level calibration intervals are continuous, each water level calibration interval is provided with a calibration interval value and a division value, and each water level calibration interval corresponds to the wood-plastic materials with different specifications according to the calibrated interval value and the division value. In the invention, the water quantity in the circulating water tank needs to be accurately controlled so as to meet the requirement on the water temperature (flow) of cooling water in the cooling process of different wood-plastic materials.
As shown in fig. 11 and 12, the specific operation modes of performing manual water replenishing and automatic water replenishing are as follows:
manual water replenishing: and (4) closing the circuit device QF, manually opening the electric valve, and opening a torsion switch SA of the water treatment device. And when the water supply system stops, the electric valve is manually closed, and SA water supply is closed.
Automatic water replenishing: the water treatment device button switch SA is switched off, a breaker QF2 is closed, when the liquid level relay SL is at a low water level, an opening point is closed usually, an intermediate relay kA1 is powered on to work, a normally closed point KA1 is opened, normally open points KA11 and KA2 are closed, when a normally closed point ST1 in the electric valve is passed, the electric valve is opened when the electric motor M works (rotates forwards), after the valve is opened to a proper position, ST1 is opened, M stops working simultaneously with KA2, a KA2 normally closed point is opened, M (rotates backwards) cannot work, when the water treatment device starts to work and stops, when the water flow is supplemented to a high water level, SL is opened, KA1 stops working, normally open points KA11 and KA12 are opened, a KA1 normally closed point is closed, the normally closed point ST and 21 are self-locked, when the external stroke switch ST is opened to a preset position and the closing point ST is opened, the KA2 stops working, the KA2 normal closing point is connected, the ST2 normal closing point motor M reverse rotation electric valve is closed after passing the KA1 normal closing point, the ST2 is disconnected after being closed to a certain position, the M stops, and the KA22 water treatment device stops working. And (6) reciprocating and circulating.
In the above process, the automatic water replenishing controller 20 can effectively control the water level, save energy, and improve the working efficiency. The phenomenon that the water level of the manual water replenishing is too high to overflow or the water level is too low to cause water shortage and the like is prevented.
In order to improve the quality of the softened water, a deep softening piece for prolonging the exchange time of the inlet water and the ion exchange resin layer 231 is arranged on the ion exchange resin layer 231, the exchange time of the inlet water and the ion exchange resin layer 231 is prolonged through the deep softening piece, the softening effect is improved, the utilization rate of the ion exchange resin layer is also improved, and frequent replacement or cleaning is avoided.
In the invention, the softened water treatment tank 23 is also communicated with the circulating water tank 10 through an internal circulating pipe to form an internal circulating passage, the circulating water tank 10 sends cooling water in a cooling system into the softened water treatment tank 23 through the internal circulating pipe to carry out multi-stage softening and filtering, and then sends the cooling water back into the circulating water tank 10 to enter the cooling system, and when the cooling water is in the whole circulating process, the cooling water is softened and filtered in real time, so that the purposes of removing scale ions and insoluble impurities are achieved.
Specifically, as shown in fig. 3, three ion exchange resin layers 231 are sequentially arranged in the softened water treatment tank 23 from top to bottom, a sealing sleeve 232 is sleeved outside each ion exchange resin layer 231, three sealing sleeves 232 are sequentially stacked and fixed on the inner wall of the softened water treatment tank 23 through clamping pieces 233, a plurality of flow holes which are symmetrical about the center of a circle on the upper surface of each sealing sleeve 232 are formed in the upper surface and the lower surface of each sealing sleeve 232, and one sealing sleeve 232 in the middle is connected with a driving piece 234 for driving the sealing sleeve 232 to rotate.
The working principle of the deep softening part is that as the upper surface and the lower surface of each sealing sleeve 232 are provided with a plurality of centrosymmetric flow direction holes, one sealing sleeve 232 in the middle rotates and the upper and lower sealing sleeves 232 do not rotate, only when the flow direction holes of the upper and lower sealing sleeves 232 are aligned with the flow direction holes of the middle sealing sleeve 232, water can sequentially pass through the three ion exchange resin layers 231, along with the continuous rotation of the middle sealing sleeve 232, the retention time of water inflow on each ion exchange resin layer 231 is prolonged, and the exchange effect is improved.
As shown in fig. 4, the screens piece 233 includes that the adherence is installed ring 233a in the demineralized water treatment tank 23, the lower border of ring 233a is connected with and is used for the bearing the collet ring 233b of seal cover 232, the last border detachable of ring 233a installs and is used for avoiding the spacing collar 233c of seal cover 232 rebound, and detachable installation setting here is for the change of three-layer ion exchange resin layer 231 conveniently, conveniently takes out, can adopt modes such as screwed connection or joint to realize.
The driving member 234 comprises a motor 234a arranged at the top of the softened water treatment tank 23 and a rotating shaft 234b connected with the middle sealing sleeve 232, and the top of the rotating shaft 234b upwards penetrates through the uppermost sealing sleeve 232 and is connected with an output shaft of the motor 234 a.
Further, in order to avoid that the middle sealing sleeve 232 drives the upper and lower sealing sleeves 232 to rotate simultaneously due to the friction resistance in the rotating process, a clamping groove 234c may be formed in the outer walls of the uppermost sealing sleeve 232 and the lowermost sealing sleeve 232, the ring 233a is provided with a clamping block 234d matched with the clamping groove 234c, and the movement is avoided through the embedded design of the clamping groove 234c and the clamping block 234 d.
The third feature of the embodiment of the present invention is that the circulating water tank 10 can perform multistage sedimentation and filtration on the entering cooling water, specifically, as shown in fig. 5 to 7, a transverse partition wall 11 and a plurality of sets of longitudinal partition walls 12 are fixedly installed at the bottom of the circulating water tank 10, one end of the transverse partition wall 11 is fixedly connected with the inner wall of the circulating water tank 10, a gap is reserved between the other end of the circulating water tank 10 and the other side wall of the circulating water tank 10, a plurality of sets of longitudinal partition walls 12 pass through the transverse partition walls 11 and intersect with the transverse partition walls 11, a top partition wall 13 fixedly installed at the top of the circulating water tank 10 is arranged between two adjacent sets of longitudinal partition walls 12, a gap is reserved between the longitudinal partition walls 12 and the top surface of the circulating water tank 10 and forms an upper water passing opening 14, a gap is reserved between the top partition walls 13 and the bottom surface of the circulating water tank 10 and forms a lower water passing opening 15, the bottom of the circulating water pool 10 is provided with a water collecting well 16, and the transverse partition wall 11, the longitudinal partition wall 12 and the top partition wall 13 are all embedded with wall passing pieces 17 for discharging cleaning sewage into the water collecting well 16.
The horizontal partition wall 11 partitions the inside of the circulating water tank 10 into a U-shaped water flow channel, an upper water passing port 14 and a lower water passing port 15 are formed by the vertical partition wall 12 and the top partition wall 13, sludge deposited at the bottom under the action of gravity is intercepted by the lower water passing port 15, fine floating objects floating on the surface are intercepted by the upper water passing port 14, multi-stage sedimentation of cooling water is realized through multi-stage interception of the upper water passing ports 14 and the lower water passing ports 15, and the precipitated sludge flows into a water collecting well along the wall 17 to be discharged when being cleaned, so that the cleaning is convenient.
The location of the collector wells 16 is here preferably located obliquely below said top partition wall 13, i.e. the water flow passes the collector wells 16 after passing the lower water passage opening 15, the collector wells 16 also allowing a one-step sedimentation, while the floating material intercepted by the top partition wall 13 can also be discharged directly along the collector wells 16.
Further, cross wall spare 17 including seting up horizontal partition wall 11 vertical partition wall 12 and the wall hole of top partition wall 13 bottom, the wall hole is rectangular dress, just it is equipped with rotatory board 171 to inlay in the wall hole, the bottom of circulating water pond 10 is provided with and is used for driving rotatory board 171 pivoted driving motor.
The rotation of the rotary plate 171 is driven by the driving motor to realize the opening and closing of the through-wall hole, and the opening angle of the through-wall hole can be realized through the rotation angle, so that the discharge function is realized.
Meanwhile, as the longitudinal partition wall 12 intercepts part of the precipitated sludge, the sludge may be gathered at the through-wall holes, and therefore, as shown in fig. 8, a set of toggle teeth for avoiding sludge agglomeration may be further installed at both ends of the rotating plate 171, and each set of toggle teeth includes a plurality of circular arc forks 172 installed at the end of the rotating plate 171 from top to bottom.
The rotation of the rotary plate 171 can break up the sludge gathered into the integrated blocks, and the design of the stirring teeth 171 can further break up the sludge, so that the problem that the sludge blocks the wall through hole to cause the sludge to be discharged is avoided.
In addition, the embodiment of the invention also provides a filter screen 18 for intercepting floating objects at the upper water gap 14, the installation quantity of the filter screens 18 can be only one upper water gap 14, or a plurality of filter screens 18 can be arranged, the size of the mesh is reduced in a gradient manner, and the gradual filtration is realized.
Further, the filter screen is also specially designed in the embodiment of the present invention, as shown in fig. 9 and 10, a pair of folding edges 181 extends from two sides of the filter screen 18 to the water flow direction, a bracket 182 for bearing and filtering impurities is connected to the bottom of the filter screen 18, and the lower ends of the pair of folding edges 181 extend downward to form a baffle for blocking openings at two ends of the bracket 182.
The filter screen 18 is used for impurities, and the intercepted impurities fall into the bracket 182 at the bottom, so that the impurities can be directly brought out and cannot fall into water when the filter screen is detached.
In order to further avoid that impurities falling into the bracket 182 are brought out of water under the flushing action of water flow, the embodiment of the invention specially designs the structure of the bracket 182, namely, the cross section of the bracket 182 is U-shaped, the bottom of the bracket 182 is provided with a leak hole, the bracket 182 is internally provided with an inclined downward guide plate 183, and the bracket 182 is positioned below the guide plate 183 to form a stacking cavity 184 for the impurities.
The design of the downward inclined guide plate 183 makes the lower part of the guide plate 183 form a stacking cavity 184 with a narrow upper part and a wide lower part, and impurities falling into the stacking cavity 184 are not easy to be washed into water again by water flow.
Furthermore, a plurality of parallel guide grooves 183a are formed in the guide plate 183 in an upward and downward inclined manner, the guide grooves 183a can guide water flow, so that impurities in the accumulation cavity 184 are prevented from being washed away in a disorderly direction by the water flow, and meanwhile, in order to discharge redundant water as soon as possible and avoid overflowing of the impurities carried by the water flow due to limited space of the accumulation cavity 184, dense drain holes can be formed in opposite side walls of the bracket 182.
The filter screen 18 assembly structure is also designed in the embodiment of the present invention, specifically, a joint of the opposite folding edge 181 and the filter screen 18 is hinged to a clamping plate 185, one side of the filter screen 18 facing away from the water flow direction is provided with a 180-degree limiting sheet 186 for limiting the rotation angle of the clamping plate 185, the other side of the clamping plate 185 relative to the hinged edge forms a side clamping portion 185a, and the clamping plate 185 extends downward to form a bottom clamping portion 185 b.
The clamping plates 185 on the two sides are firstly clamped into the two corresponding side faces of the circulating water tank and then are downwards inserted into the position to be installed, so that clamping grooves matched with the clamping plates 185 need to be formed in the circulating water tank during installation, the clamping plates 185 are firstly upwards pulled out during filter screen disassembly, and then the clamping plates 185 are removed, and convenience and rapidness are achieved.
In addition, in order to clean the disassembled filter screen 18 conveniently, longitudinal sliding grooves are formed in two sides of the filter screen 18, a sliding-in opening is formed in the upper end of each longitudinal sliding groove, sliding blocks matched with the longitudinal sliding grooves are arranged on the opposite folding edges 181, the opposite folding edges can slide in and slide out along the longitudinal sliding grooves to be installed in the disassembling process, baffle effects on two ends of the supporting grooves 182 are released after the opposite folding edges 181 are disassembled, and water flow can directly wash impurities in the stacking cavities 184.
The fourth feature of the embodiment of the present invention is that, in addition to the function of the electric cooling tower 70 to cool and regulate the water in the circulating water tank 10, the water return pipe 60 needs a primary cooling function in addition to the transportation function before the water flowing out from the extruder 50 enters the circulating water tank 10, so as to reduce the operation loss of the electric cooling tower 70, specifically:
as shown in fig. 14, the water return pipe 60 includes a water inlet section 61 connected to the water outlet of the extruder 50 and a water outlet section 62 connected to the water return port of the circulation water tank 10, an expansion bend 63 is connected between the water inlet section 61 and the water outlet section 62, a plurality of fan blades 65 are installed in the expansion bend 63 through a rotating shaft 64, at least two of the fan blades 65 are formed with an included angle with the water inlet direction of the water inlet section 61 so that the fan blades 65 rotate under the water flow flushing of the water inlet section 61, the outer wall of the expansion bend 63 protrudes outward to form a plurality of cooling cavities 66, and two adjacent cooling cavities 66 are communicated through a flow guide section 67.
Here, the rotation of the fan blade 65 is similar to the rotation of a traditional waterwheel, the fan blade 65 rotates clockwise or counterclockwise to convey the water flow of the water inlet section 61 to the water outlet section 62, the arrangement of the expansion bend 63 increases the heat exchange area of the water outlet pipe 60, meanwhile, the rotation of the fan blade 65 can stir the water flow, so that the heat dissipation is uniform, the fan blade 65 pumps part of the water into the cooling cavity, the heat exchange is carried out between the outer wall of the cooling cavity 66 and the outside air to further cool the water in the cooling cavity 66 naturally, the adjacent two cooling cavities 66 are communicated with each other through the flow guide section 67 so as to facilitate the communication of the water flow, and the primary cooling at the expansion bend 63 is completed in the process of conveying the water flow from the water inlet section 61 to the water outlet section 62.
The fifth feature of the embodiment of the present invention is that the electric cooling tower 70 can set the time interval according to the peak-to-valley electricity price and set the required water temperature according to the water temperature. Compared with the traditional manual controller, the automatic control system is more accurate, more energy-saving and more economical to use in the valley of the electricity price.
As shown in fig. 13, the specific process of the time-phased automatic control of the electric cooling tower 70 is as follows:
a main loop: three-phase current enters a breaker QF1, is controlled by QF1 and is respectively connected to contactors KM1 and KM2, is connected with a cold water pump M1 through a thermal relay FR1 by KM1, and is connected with a cooling fan M2 through a thermal relay FR2 by KM 2.
A control loop: the current L3 is controlled by a breaker QF2 and an N line forms 220 control current.
Manual control: the time control clock KT is set to be out of work, the time control clock KT is switched on through the starting button SB2, the coil of the intermediate relay KA1 is electrified, the KA1 normally open contact is closed and kept, the KM1 works when the toggle switch SA1 is closed, the M1 works cold water, only when the KM1 works, the KM1 auxiliary contact is closed at the moment, the SA2 is closed, the KM2 can work, and the M2 cooling fan can rotate. If M2 has a fault and FR2 protects the fault, and M1 has a fault and FR1 protects the fault, M2 stops working. If the machine is stopped and the stop button SB1 is pressed, the machine can be stopped.
Automatic control: KT sets the working state of the time period, SA1, SA2 are in the normally open state. When the KA1 coil is powered on by the starting button SB2, the KA1 normally-open contact is kept closed, and the KT is powered on to work. The temperature control BT1 and BT2 work, and when the water temperature exceeds the temperature in a set time period, the thermocouples of the temperature control BT1 and BT2 transmit signals to the temperature control meters. The BT1 and BT2 normally open contacts are closed, and KM2 works at the moment. KM2 can work only through KM1, BT1 and BT2 can be set to have two different temperatures, BT2 can be set to have a higher temperature, and a cooling fan does not need to be started when the water temperature is not too high, and only a cold water pump needs to cool water. If necessary, the shutdown is stopped by pressing the stop button SB 1.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (8)
1. The utility model provides an extruder cooling water automatic cycle system is moulded to wood which characterized in that includes:
the water circulation device comprises a circulating water tank (10), wherein the circulating water tank (10) is provided with a water inlet and a water outlet;
the automatic water replenishing controller (20) is connected with a water inlet of the circulating water tank (10) and controls the water inflow of the water inlet according to the water level in the circulating water tank (10) so that the softened water level in the circulating water tank (10) is in a set range, and the set range is divided into a plurality of water level calibration intervals based on the cooling requirement of the wood plastic material;
the water pump (30) is connected with a water outlet of the circulating water pool (10), and the water pump sends water in the circulating water pool (10) into the extruder (50) through the water distribution bag (40) to cool and shape the product;
the high-temperature water in the extruder (50) is primarily cooled by a water return pipe (60), enters the circulating water tank (10) for multistage softening and filtering, and then enters the extruder (50) again through a water pump, the circulating water tank (10) is connected with an electric water cooling tower (70) for controlling the water temperature, and the electric water cooling tower (70) adjusts the water temperature in the circulating water tank (10) through a semiconductor refrigerator arranged in the circulating water tank (10) based on the temperature sensing data of a temperature sensor arranged in the circulating water tank (10);
the automatic water supplementing controller (20) comprises a softened water treatment tank (23) connected with a water inlet pipeline (21) and a water outlet pipeline (22), a manual valve (24) and an electric valve (25) are installed on the water inlet pipeline (21), the water outlet pipeline (22) of the softened water treatment tank (23) is communicated with the circulating water tank (10), a hydraulic relay (26) used for sensing the water level in the circulating water tank (10) and controlling the electric valve (25) to be opened and closed is installed in the circulating water tank (10), the adjacent end points of the adjacent water level calibration intervals are continuous, each water level calibration interval is used for calibrating an interval value and a division value, and each water level calibration interval corresponds to wood plastic materials with different specifications according to the calibrated interval value and the division value;
the softened water treatment tank (23) is communicated with the circulating water tank (10) through an inner circulating pipe to form an inner circulating passage, the circulating water tank (10) sends cooling water in a cooling system into the softened water treatment tank (23) through the inner circulating pipe to be subjected to multistage softening and filtering, then sends the cooling water back into the circulating water tank (10) to enter the cooling system, three ion exchange resin layers (231) are sequentially arranged in the softened water treatment tank (23) from top to bottom, a sealing sleeve (232) is sleeved outside each ion exchange resin layer (231), the three sealing sleeves (232) are sequentially stacked and fixed on the inner wall of the softened water treatment tank (23) through clamping pieces (233), and a plurality of flow direction holes (2321) which are symmetrical about the center of the circle of the upper surface of each sealing sleeve (232) are formed in the upper surface and the lower surface of each sealing sleeve (232), the middle sealing sleeve (232) is connected with a driving piece (234) for driving the sealing sleeve to rotate.
2. The automatic cooling water circulation system of a wood-plastic extruder is characterized in that the clamping pieces (233) comprise ring rings (233a) which are arranged in the softened water treatment tank (23) in an adherence manner, the lower edges of the ring rings (233a) are connected with bottom ring rings (233b) used for bearing sealing sleeves (232), and the upper edges of the ring rings (233a) are detachably provided with limiting rings (233c) used for preventing the sealing sleeves (232) from moving upwards.
3. The automatic cooling water circulation system of a wood-plastic extruder is characterized in that the driving part (234) comprises a motor (234a) arranged at the top of the softened water treatment tank (23) and a rotating shaft (234b) connected with the middle sealing sleeve (232), the top of the rotating shaft (234b) upwards penetrates through the uppermost sealing sleeve (232) and is connected with an output shaft of the motor (234a), clamping grooves (234c) are formed in the outer walls of the uppermost sealing sleeve (232) and the lowermost sealing sleeve (232), and clamping blocks (234d) matched with the clamping grooves (234c) are arranged on the ring (233 a).
4. The automatic cooling water circulation system for the wood-plastic extruder according to claim 1, wherein a transverse partition wall (11) and a plurality of groups of longitudinal partition walls (12) are fixedly installed at the bottom of the circulation water tank (10), one end of the transverse partition wall (11) is fixedly connected with the inner wall of the circulation water tank (10), a gap is reserved between the other end of the circulation water tank (10) and the other side wall of the circulation water tank (10), the plurality of groups of longitudinal partition walls (12) pass through the transverse partition wall (11) and intersect with the transverse partition wall (11), a top partition wall (13) fixedly installed at the top of the circulation water tank (10) is arranged between two adjacent groups of longitudinal partition walls (12), a gap is reserved between the longitudinal partition walls (12) and the top surface of the circulation water tank (10) and an upper water passing port (14) is formed, the top partition wall (13) with leave between the bottom surface of circulating water pond (10) and establish the space and form down and cross mouth of a river (15), the bottom of circulating water pond (10) is provided with sump pit (16), horizontal partition wall (11) vertical partition wall (12) and all bury underground on top partition wall (13) and be used for will wasing wall spare (17) of crossing in sewage drainage sump pit (16).
5. The wood plastic extruder cooling water automatic circulation system according to claim 4, wherein the wall penetrating member (17) comprises wall penetrating holes formed at the bottoms of the transverse partition walls (11), the longitudinal partition walls (12) and the top partition wall (13), the wall penetrating holes are long and are embedded with rotary plates (171), and the bottom of the circulating water tank (10) is provided with a driving motor (172) for driving the rotary plates (171) to rotate.
6. The automatic cooling water circulation system for the wood-plastic extruder is characterized in that a filter screen (18) used for intercepting floating objects is arranged at the upper water passing port (14), opposite folding edges (181) extend towards the water flow direction from two sides of the filter screen (18), a bracket (182) used for bearing and filtering impurities is connected to the bottom of the filter screen (18), and baffles used for blocking openings at two ends of the bracket (182) are formed by downward extending of the lower ends of the opposite folding edges (181) from two sides.
7. The automatic cooling water circulation system for the wood-plastic extruder according to claim 6, wherein the cross section of the bracket (182) is U-shaped, a leaking hole is formed in the bottom of the bracket (182), an obliquely downward guide plate (183) is arranged in the bracket (182), and the bracket (182) is located below the guide plate (183) to form a stacking cavity (184) for impurities.
8. The automatic cooling water circulation system of a wood-plastic extruder according to claim 1, the water return pipe (60) comprises a water inlet section (61) connected with the water outlet of the extruder (50) and a water outlet section (62) connected with the water return port of the circulating water pool (10), an expansion bend (63) is connected between the water inlet section (61) and the water outlet section (62), a plurality of fan blades (65) are arranged in the expansion bend (63) through a rotating shaft (64), an included angle is formed between at least two fan blades (65) and the water inlet direction of the water inlet section (61) so that the fan blades (65) can rotate under the flushing of the water flow of the water inlet section (61), the outer wall of the expansion bend (63) protrudes outwards to form a plurality of cooling cavities (66), and two adjacent cooling cavities (66) are communicated through a flow guide section (67).
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| CN202011117505.8A CN112356420B (en) | 2020-10-19 | 2020-10-19 | Wood is moulded extruder cooling water automatic cycle system |
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| CN202011117505.8A CN112356420B (en) | 2020-10-19 | 2020-10-19 | Wood is moulded extruder cooling water automatic cycle system |
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| CN112356420B true CN112356420B (en) | 2022-06-21 |
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| CN113325890B (en) * | 2021-04-29 | 2022-09-13 | 四川凯德源科技有限公司 | Hydrogenation gas engine heat exchange control system with remote heat exchange function and method thereof |
| CN113587116B (en) * | 2021-09-28 | 2021-12-21 | 光大环保技术装备（常州）有限公司 | Control method, control system and equipment for protection equipment in water-cooling circulation system |
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| CN203937168U (en) * | 2014-07-18 | 2014-11-12 | 海宁长昆包装有限公司 | A kind of cooling water recirculation system of extruder |
| CN104478137A (en) * | 2014-12-18 | 2015-04-01 | 中国第一重型机械股份公司 | Energy-saving recycling combination system for industrial circulating cooling water |
| CN204831788U (en) * | 2015-08-04 | 2015-12-02 | 中国第一汽车股份有限公司 | Engine is taken a trial run and is used cooling water circulation controlling means |
| CN204955370U (en) * | 2015-08-28 | 2016-01-13 | 河北尚华塑料科技有限公司 | Cooling water circulation system for extruder |
| CN105196453A (en) * | 2015-10-14 | 2015-12-30 | 贵州龙里贵乌泡沫塑料包装有限责任公司 | EPS plastic foam cooling water circulating system and method for cooling EPS plastic foam using same |
| CN211451528U (en) * | 2019-12-12 | 2020-09-08 | 大地熊（苏州）磁铁有限公司 | Automatic water supply constant-pressure water cooling system |
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