CN114133165B

CN114133165B - Radiation-proof wallboard formula and production device thereof

Info

Publication number: CN114133165B
Application number: CN202111222636.7A
Authority: CN
Inventors: 唐峥; 唐建文
Original assignee: Hunan Kangningda Medical Technology Co ltd Changsha Branch
Current assignee: Hunan Knd Medical Technology Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-12-30
Anticipated expiration: 2041-10-20
Also published as: CN114133165A

Abstract

The invention discloses a radiation-proof wallboard formula, which comprises a resin base material and samarium oxide and/or barium sulfate, wherein the weight ratio of the resin base material to the samarium oxide is (1) - (0-10), and the weight ratio of the resin base material to the barium sulfate is (1): 0~9; the formula also comprises an auxiliary agent, wherein the weight ratio of the resin base material to the auxiliary agent is 1 to 0.1-1. The composite board prepared by the radiation-proof wallboard formula provided by the invention is safe, non-toxic, green and environment-friendly, can be completely recycled after radiation protection is not needed, and can be formed into a new radiation-proof wallboard through thermoplastic molding again.

Description

Radiation-proof wallboard formula and production device thereof

Technical Field

The invention belongs to the technical field of wallboard formula and manufacturing, and particularly belongs to a radiation-proof wallboard formula and a production device thereof.

Background

With the development of science and technology, radiation technology brings great convenience to human beings, and has some worried aspects, wherein the most important concern of people is the problem that electromagnetic radiation affects human health, so radiation protection has gradually formed a huge industrial chain.

Due to the radiation hazard, a layer of shielding material with enough thickness is added between a person and a radiation source in hospitals, factories, scientific research places and the like, and a lead plate (the thickness is determined according to the energy intensity of machine rays) is often adopted.

The earliest protective material used as a wall body is a lead plate used as a wall surface nail, but the lead plate is difficult to nail without fixed shape due to heavy weight and soft texture of unit volume; free lead atoms are dispersed in the air in the use process of the lead plate, so that the lead plate is harmful to human bodies; when the X-ray is irradiated on the lead plate, the Compton effect can be generated to generate scattered rays, and secondary damage can be caused to people in the environment; the price of lead is high, and the construction cost is high; and secondary decoration is needed after the nails are spread on the lead plates, so that the engineering cost is further increased.

In recent years, related enterprises have continuously introduced new materials and products for radiation protection, lead-free radiation protection materials have been the direction of research and development in the radiation protection field, and three other materials or products besides lead plates have been developed: one is barium sulfate mortar used for wall surface painting, one is a cement fiber barium board used for wall surface nail paving, and the other is a thermosetting resin-based composite protection board which can be paved and pasted on the wall surface shortly after the board is on the market. The limitations are as follows:

the barium sulfate cement mortar is painted on the wall surface, and the lead equivalent of 1mm exists when the thickness of each 15mm is under the voltage of a 120KV tube. The lead equivalent weight requirement of a general medical image X-ray machine room is 2 to 3mm, and therefore, the requirement can be met only by painting the wall surface with the thickness of 30 to 45mm. The thick painting layer has great construction difficulty, and the painting layer can crack and fall off after a long time.

The barium cement fiberboard is produced by processing barium sulfate instead of partial cement and fiber on the basis of the original production process of the barium cement fiberboard. The amount of barium sulfate added should not be too large to provide the board with a certain flexural strength and toughness. Under the voltage of 120KV tube of the finished board with the thickness of 10mm, the lead equivalent of the finished board is less than 0.6mm, two layers are nailed and paved on the wall surface, and the lead equivalent of the finished board is less than 1.2mm. The low lead equivalent weight makes the cement fiberboard only meet the radiation protection requirements of partial smaller energy levels, and the use of the cement fiberboard is limited. The surface layer is needed to be made after the nail is paved on the plate, and the construction is complicated.

The thermosetting resin-based composite protection plate has a thickness of 12mm and a lead equivalent of 2mm under the voltage of a 120KV tube. The panel may have a finish without secondary finishing. If the plate has good decorative effect on the wall, the plate needs to be made into a length of 3m so as to finish the laying at one time from the ground to the top without leaving transverse seams when the plate is laid on the wall. The plate can be broken by special tools, which is a fatal defect of the plate and restricts the rapid popularization and application of the plate in the market.

In summary, the prior art has the disadvantages of no lead-free environmental protection, high breaking strength and toughness, no need of secondary decoration, good stability, convenient construction, high protection level and relatively low cost.

Disclosure of Invention

The invention aims to: the formula of the radiation-proof wallboard with low cost and high protection level is provided.

The technical scheme adopted by the invention is as follows:

the radiation-proof wallboard formula comprises a resin base material and samarium oxide and/or barium sulfate, wherein the weight ratio of the resin base material to the samarium oxide is 1 to 0 to 10, and the weight ratio of the resin base material to the barium sulfate is 1:0~9; the formula also comprises an auxiliary agent, wherein the weight ratio of the resin base material to the auxiliary agent is 1 to 0.1-1.

Preferably, the auxiliary agent comprises one or more of a heat stabilizer, a lubricant, a toughening agent, a coupling agent, a dispersing agent and a PCV (PCV) processing auxiliary agent, and the resin base material is any one of PVC (polyvinyl chloride) resin, PP (polypropylene) resin and PE (polyethylene) resin; or the formula further comprises an additive, wherein the additive is any one or more of iron, manganese, copper, tungsten, iron oxide, manganese oxide, copper oxide and tungsten oxide.

Preferably, the raw materials and the weight portion ratio thereof are as follows: 100 parts of PVC resin, 200 to 600 parts of barium sulfate, 400 to 800 parts of samarium oxide, 0.5 to 2.5 parts of heat stabilizer, 0.5 to 5 parts of lubricant, 1 to 10 parts of toughening agent, 1~3 parts of coupling agent, 0.5 to 2 parts of dispersing agent and 0.5 to 1 part of PVC processing aid.

In the molding process of the resin material, because of the volume change caused by crystallization, strong internal stress, large residual stress frozen in a plastic part, strong molecular orientation and other factors, the shrinkage rate is large, the shrinkage rate range is wide, and the directionality is obvious; when the plastic part is formed, the molten material is contacted with the surface of the cavity and the outer layer is immediately cooled to form a low-density solid shell, and the inner layer of the plastic part is slowly cooled to form a high-density solid layer with large shrinkage due to poor thermal conductivity of the plastic, so that the density is uneven. In addition, no matter the existing documents or media newspapers and periodicals, only the application of rare earth elements as ray protection functional fillers in soft materials or the improvement of the thermoplastic performance of the soft materials by small addition amount in the thermoplastic materials (Guo Tao and the like, the study on the rheological behavior of samarium oxide filled PP processing [ J ]. Plastics industry, 2003,37 (9): 32-34) is mentioned), and no document relates to how to use the thermoplastic materials, especially hard materials, for ray protection. In fact, in the conventional radiation protection field, resin is used as a base material, due to the limitation of the resin material, the dosage of the functional filler is very exquisite, and the molding, the flexural strength, the flame retardance, the filler and the base material dispersibility are all very experimented factors for judging whether the plate can be used in the market; the addition of excessive functional filler easily causes the material to have weak breaking resistance and strong rigidity, so that the material cannot be molded or loses the synergistic action with the resin base material. The inventor finds that when samarium oxide is used as a functional filler, the weight ratio of the substrate material to the samarium oxide is 1: 5363 and in the case of 4~8, the samarium oxide powder can be used as a coupling agent and a dispersing agent, has the function of ray protection, can enhance the radiation protection function of the resin section, has good ray protection effect, and overcomes the technical bias mentioned above.

Compared with the prior art, the invention takes resin as a base material, samarium oxide as a functional filler, a heat stabilizer, a lubricant, a toughening agent and optionally a coupling agent or a dispersing agent and other auxiliary agents as required, and after hot mixing and cold mixing, the semi-finished plate or the finished plate is formed by a double-screw agent plate production line, and a film can be coated and veneered in the forming process, or a UV coating line can be used as a surface layer in the subsequent working procedure. The formula of the provided radiation-proof wallboard has the advantages of good radiation-proof performance, difficult aging, high strength, large toughness, no lead, environmental protection, no toxicity, convenient construction and the like, and is superior to other radiation-proof materials on the market.

In addition, the invention also discloses a production device for preparing the radiation-proof wallboard, which is used for producing the radiation-proof wallboard according to the formula disclosed by the invention, and comprises a base, wherein a feeding device, a die main body and an extruder are arranged on the base, the outlet end of the feeding device is communicated with the feeding end of the extruder, the feeding device comprises a mixing chamber, the top end of the mixing chamber is provided with a mixing motor, a rotating shaft of the mixing motor penetrates through the mixing chamber to be provided with a stirring rod, the top end of the mixing chamber is also provided with a feeding hole, and the stirring rod is provided with a plurality of stirring support rods; a heating assembly is arranged on the side wall of the bottom end of the mixing chamber; the bottom end of the mixing chamber is also communicated with a distributing chamber; a condensing assembly is arranged in the material distribution chamber; a mould runner is arranged in the mould main body; the mould runner comprises an inlet runner and an outlet runner which are communicated; the inlet flow channel is matched with the outlet end of the extruder; the outlet flow passage is matched with the door plate in size; and the base is close to the outlet flow passage and is also provided with a traction assembly in a sliding manner, and the traction assembly is suitable for leading out the door plate from the outlet flow passage. The wallboard forming device comprises an extruder and a die body, wherein the extruder and the die body are used for guiding a molten raw material into the die body for forming and flowing out of an outlet runner, a traction assembly is arranged for positioning and forming the end part position of a wallboard when the wallboard forming device is just used so as to ensure the flatness of the wallboard, a mixing chamber is arranged for mixing the main raw material (such as a resin base material) of the wallboard with an additive auxiliary material (such as a heat stabilizer, a lubricant, a weighting agent and the like), a heating assembly is arranged for heating and melting the raw material so as to ensure that the raw materials are fully mixed in a molten state, and a distribution chamber and a condensation assembly are arranged for condensing the molten and mixed raw material so as to facilitate subsequent processing and use, so that the uniform material consumption of each position of a subsequent formed wallboard is ensured, and the overall performance of the wallboard is ensured.

Preferably, the heating assembly is including setting up hot plate on the lateral wall of mixing chamber bottom, still be provided with on the puddler and scrape the wall piece, it scrapes the wallboard to scrape being provided with on the wall piece, scrape the wallboard with mixing chamber lateral wall contact sets up, the mixing chamber with be provided with a plurality of feed openings between the branch material room, the feed opening is close to the one end of branch material room is provided with the unloading pipe, the unloading pipe bottom is provided with a plurality of quantitative holes, still be provided with electric control switch on the unloading pipe. The setting of hot plate for with the raw materials intensification to the molten state, guarantee its intensive mixing, scrape the setting of wallboard, then can scrape the molten state raw materials of adhesion on the compounding room lateral wall down, avoid the raw materials to remain and influence subsequent processing, the setting in unloading pipe and quantitative hole then is used for controlling the size of condensation raw materials, make during its follow-up joining extruder of being convenient for, the setting of automatically controlled switch then is being condensed after being used for guaranteeing the intensive melting of raw materials and mixing, the stability of improvement device.

Preferably, the material mixing chamber with still be provided with the reduction gear between the branch material chamber, the puddler is kept away from the one end and the retarder connection of compounding motor, the reduction gear orientation divide material chamber one end to be provided with the transfer line, be provided with a plurality of blank swoves on the transfer line, the blank sword is close to the ration hole sets up, the condensation subassembly is including setting up divide the refrigeration piece of material chamber bottom, divide material chamber bottom still to be provided with the discharge gate, the refrigeration piece winds the discharge gate sets up. The setting of reduction gear and transfer line for in distributing the material room with compounding motor drive transmission, reduce the energy consumption, improve the utilization ratio of device, the setting of blank sword then is used for cutting the melting raw materials that quantitative hole flows, size behind its condensation of control, the setting of refrigeration piece then can be with the rapid condensation of the melting raw materials that falls after the cutting, can flow by the discharge gate after the condensation, reach the use purpose.

Preferably, still be provided with a plurality of scraping wings on the transfer line, the scraping wings is close to the refrigeration piece and with the refrigeration piece cooperation sets up, the scraping wings is close to the one end of refrigeration piece still is provided with and pushes away the material brush, the condensation subassembly is still including the suction pump, divide the indoor aspiration channel that is provided with of material, the aspiration channel with the air inlet end intercommunication setting of suction pump, the air-out end of suction pump still is provided with the filter, the aspiration channel is around establishing divide the material indoor, the aspiration channel is close to one side of dividing the material room intermediate position still is provided with the induced air mouth. The scraping plate and the pushing brush are arranged on the transmission rod, the condensing raw materials on the refrigerating sheet can be continuously scraped, the raw materials are prevented from being adhered to the refrigerating sheet after being condensed, condensation of follow-up raw materials is influenced, air flow rate in the material distribution chamber can be improved due to the arrangement of an air inlet on the suction pump and the air suction pipe, air can be conducted to the material distribution chamber through the refrigerating sheet, precooling is carried out on the raw materials in the falling process of the raw materials, and condensation efficiency is improved.

Preferably, the mold runner further comprises a flow equalizing port arranged between the inlet runner and the outlet runner, a plurality of feeding cavities are arranged between the flow equalizing port and the outlet runner, one end of the flow equalizing port is communicated with the inlet runner, the other end of the flow equalizing port is communicated with the outlet runner, a drainage plate is further arranged in the flow equalizing port, one end of the drainage plate is close to the outlet runner, and the other end of the drainage plate is close to the high-level end of the flow equalizing port. The flow equalizing port and the feeding cavities are arranged, so that the outlet flow channel can be fed by a plurality of point positions at the same time, the feeding at each position of the finished wallboard is uniform, the arrangement of the drainage plate can pre-obstruct the molten raw material, and the molten raw material flows into the feeding cavities after the raw material is filled into one end (close to one end of the inlet flow channel) of the flow equalizing port, so that the synchronous feeding of each pair of feeding cavities can be ensured, and the phenomenon that the feeding cavities at the positions close to the inlet flow channel are pre-fed to influence the forming of the whole wallboard is avoided.

Preferably, the top end of the mold runner is provided with an exhaust valve, the side wall of the mold runner is further provided with a pressure gauge, the outlet runner is wound with a cooling runner, and the two ends of the cooling runner are provided with a cooling inlet and a cooling outlet. The setting of discharge valve then can discharge unnecessary gas in the mould runner, avoids the inside bubble that exists of wallboard design back, the appearance of the condition such as cavity, and the setting of pressure gauge then is used for guaranteeing mould runner internal pressure, is convenient for know the filling condition of the raw materials in the mould runner, and the setting of cooling runner then can be carried out the pre-setting to the wallboard in the mould to the condition that takes place wallboard softening deformation when this avoids the wallboard to flow by the export runner.

Preferably, the traction assembly is including setting up traction motor on the base, be provided with in traction motor's the pivot and pull the screw rod, the cooperation is provided with the tractor on the traction screw rod, still be provided with on the tractor with export runner complex traction block, the traction block is close to the one end of export runner is provided with the overhead kick piece, still be provided with sealed piece between traction block and the overhead kick piece, be provided with the seal groove on the sealed piece lateral wall, be provided with the sealing washer in the seal groove, the sealing washer with the cooperation of export runner sets up, still be provided with the ball groove on the traction block lateral wall, the ball inslot be provided with the support ball of export runner lateral wall contact, still be provided with a plurality of traction wheels on the base, traction wheel top level with export passageway bottom level is unanimous. Traction motor's setting, then be used for driving the tractor and take place the skew along pulling the screw rod, inside then can stretching into the export runner with export runner complex traction block, at wallboard design in-process and wallboard integrated into one piece, follow-up with the junction wallboard cutting can, with this connection effect of guaranteeing traction block and wallboard, the setting of overhead kick piece, then can avoid the wallboard to carry out the shaping back with traction block one, traction block pulls in-process and wallboard separation, the setting of seal groove and sealing washer on the sealing block is used for avoiding the melting raw materials to ooze the export runner by clearance, influence subsequent traction process, cause the influence to the pressure management and control in the mould runner simultaneously, the relative position of traction block and export runner can then be guaranteed in the setting of ball groove, the setting of traction wheel is then used for pulling the wallboard front end out the export runner after, carry out continuous support to each position of wallboard, further avoid the wallboard to warp.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the radiation-proof wallboard formula provided by the invention can be produced into composite boards with various thicknesses according to requirements, such as 4mm, 8mm and 12mm, the lead equivalent under the voltage of a 120KV pipe basically meets the radiation protection requirements of various medical image machine rooms, and other radiation protection products can also use the boards produced by the invention as protection layers.

2. The composite board prepared by the radiation-proof wallboard formula provided by the invention is safe, non-toxic, green and environment-friendly, can be completely recycled after radiation protection is not needed, and can be formed into a new radiation-proof wallboard through thermoplastic molding again.

3. The composite board prepared by the radiation-proof wallboard formula provided by the invention has the cost which is only one third to two thirds of that of a pure lead board under the condition of the same lead equivalent and thickness, and can accelerate the lead-free process of radiation protection in China by taking the composite board as a substitute material of the lead board for radiation protection.

4. According to the wallboard, the main raw materials and the added auxiliary materials can be mixed through the arrangement of the mixing chamber, the raw materials are heated and melted through the arrangement of the heating assembly, so that the raw materials are fully mixed in a melting state, the raw materials after being melted and mixed can be condensed through the arrangement of the distributing chamber and the condensing assembly, the subsequent processing and use are facilitated, the uniform material consumption of each position of a subsequent formed wallboard is guaranteed, and the overall performance of the wallboard is guaranteed.

5. According to the invention, through the arrangement of the inverted hook block, the situation that the wall plate is separated from the wall plate in the traction process of the traction block after being integrally formed with the traction block can be avoided, the arrangement of the sealing groove and the sealing ring on the sealing block is used for preventing the molten raw material from seeping out of the outlet runner from the gap to influence the subsequent traction process, and meanwhile, the influence on pressure control in the die runner is caused, and the arrangement of the ball groove can ensure the relative position of the traction block and the outlet runner, so that the stability of the traction block when sliding in the outlet runner is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the structure of a production apparatus of the present invention.

Fig. 2 is an enlarged schematic view of region a in fig. 1.

Fig. 3 is an enlarged schematic view of the region B in fig. 1.

The labels in the figure are: 1-base, 2-extruder, 3-die body, 4-die flow channel, 5-inlet flow channel, 6-outlet flow channel, 7-equalizing port, 8-feeding cavity, 9-drainage plate, 10-exhaust valve, 11-pressure gauge, 12-cooling flow channel, 13-cooling inlet, 14-cooling outlet, 15-traction motor, 16-traction screw, 17-tractor, 18-traction block, 19-inverted hook block, 20-sealing block, 21-sealing groove, 22-sealing ring, 23-ball groove, 24-supporting ball, 25-traction wheel, 26-mixing chamber, 27-mixing motor, 28-stirring rod, 29-feeding port, 30-stirring support rod, 31-material distribution chamber, 32-heating plate, 33-wall scraping block, 34-wall scraping plate, 35-material outlet, 36-material discharge pipe, 37-quantitative hole, 38-electric control switch, 39-speed reducer, 40-driving rod, 41-material cutting knife, 42-material discharge plate, 43-material discharge port, 44-material pushing plate, 44-material brushing, 45-material pushing pipe, 45-air suction pipe, and suction air inlet and suction air outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The radiation-proof wallboard formula comprises a resin base material and samarium oxide and/or barium sulfate, wherein the weight ratio of the resin base material to the samarium oxide is 1 to 0 to 10, and the weight ratio of the resin base material to the barium sulfate is 1:0~9; the formula also comprises an auxiliary agent, wherein the weight ratio of the resin base material to the auxiliary agent is 1 to 0.1 to 0.2; the auxiliary agent comprises one or more of a heat stabilizer, a lubricant, a toughening agent, a coupling agent, a dispersing agent and a PCV processing aid, and the resin base material is any one of PVC resin, PP resin and PE resin; the raw materials and the weight portion ratio thereof are as follows: 100 parts of PVC resin, 200 to 600 parts of barium sulfate, 400 to 800 parts of samarium oxide, 0.5 to 2.5 parts of heat stabilizer, 0.5 to 5 parts of lubricant, 1 to 10 parts of toughening agent, 1~3 parts of coupling agent, 0.5 to 2 parts of dispersing agent and 0.5 to 1 part of PVC processing aid. Optionally, the formulation further comprises an additive, wherein the additive is any one or more of iron, manganese, copper, tungsten, iron oxide, manganese oxide, copper oxide and tungsten oxide. The additive is selected from metal or oxide thereof, so that the structural strength of the radiation-proof wallboard can be further improved.

In addition, as shown in fig. 1, 2 and 3, the invention also discloses a production device for preparing the radiation-proof wallboard, which comprises a base 1, wherein the base 1 is provided with a feeding device, a die main body 3 and an extruder 2, the outlet end of the feeding device is communicated with the feeding end of the extruder 2, the feeding device comprises a mixing chamber 26, the top end of the mixing chamber 26 is provided with a mixing motor 27, the rotating shaft of the mixing motor 27 penetrates through the mixing chamber 26 to be provided with a stirring rod 28, the top end of the mixing chamber 26 is also provided with a feeding hole 29, and the stirring rod 28 is provided with a plurality of stirring support rods 30; a heating assembly is arranged on the side wall of the bottom end of the mixing chamber 26; the bottom end of the mixing chamber 26 is also communicated with a distributing chamber 31; a condensing assembly is arranged in the material distribution chamber 31; a mould runner 4 is arranged in the mould main body 3; the mould runner 4 comprises an inlet runner 5 and an outlet runner 6 which are communicated; the inlet runner 5 is matched with the outlet end of the extruder 2; the outlet flow passage 6 is matched with the door plate in size; a traction assembly is arranged on the base 1 close to the outlet flow passage 6 in a sliding manner, and is suitable for leading out the door plate from the outlet flow passage 6; the temperature rising assembly comprises a heating plate 32 arranged on the side wall of the bottom end of the mixing chamber 26, a wall scraping block 33 is further arranged on the stirring rod 28, a wall scraping plate 34 is arranged on the wall scraping block 33, the wall scraping plate 34 is arranged in contact with the side wall of the mixing chamber 26, a plurality of feed openings 35 are arranged between the mixing chamber 26 and the distributing chamber 31, a feed pipe 36 is arranged at one end, close to the distributing chamber 31, of each feed opening 35, a plurality of quantitative holes 37 are arranged at the bottom end of each feed pipe 36, and an electric control switch 38 is further arranged on each feed pipe 36; a speed reducer 39 is further arranged between the mixing chamber 26 and the distributing chamber 31, one end of the stirring rod 28, which is far away from the mixing motor 27, is connected with the speed reducer 39, a transmission rod 40 is arranged at one end of the speed reducer 39, which faces the distributing chamber 31, a plurality of material cutting knives 41 are arranged on the transmission rod 40, the material cutting knives 41 are arranged close to the quantitative holes 37, the condensing assembly comprises refrigerating sheets 42 arranged at the bottom end of the distributing chamber 31, a discharge hole 43 is further arranged at the bottom end of the distributing chamber 31, and the refrigerating sheets 42 are arranged around the discharge hole 43; the transmission rod 40 is further provided with a plurality of material pushing plates 44, the material pushing plates 44 are close to the refrigerating sheet 42 and are arranged in a matched mode with the refrigerating sheet 42, one ends of the material pushing plates 44 close to the refrigerating sheet 42 are further provided with material pushing brushes 45, the condensation assembly further comprises a suction pump 46, an air suction pipe 47 is arranged in the material distribution chamber 31, the air suction pipe 47 is communicated with an air inlet end of the suction pump 46, an air outlet end of the suction pump 46 is further provided with a filter 48, the air suction pipe 47 is wound in the material distribution chamber 31, and one side, close to the middle position of the material distribution chamber 31, of the air suction pipe 47 is further provided with an air inlet 49; the mold runner 4 further comprises a flow equalizing port 7 arranged between the inlet runner 5 and the outlet runner 6, a plurality of feeding cavities 8 are arranged between the flow equalizing port 7 and the outlet runner 6, one end of the flow equalizing port 7 is communicated with the inlet runner 5, the other end of the flow equalizing port 7 is communicated with the outlet runner 6, a drainage plate 9 is further arranged in the flow equalizing port 7, one end of the drainage plate 9 is arranged close to the outlet runner 6, and the other end of the drainage plate 9 is arranged close to the high-level end of the flow equalizing port 7; the top end of the mold flow passage 4 is provided with an exhaust valve 10, the side wall of the mold flow passage 4 is also provided with a pressure gauge 11, the outlet flow passage 6 is wound with a cooling flow passage 12, and two ends of the cooling flow passage 12 are provided with a cooling inlet 13 and a cooling outlet 14; the traction assembly is including setting up traction motor 15 on the base 1, be provided with traction screw 16 in traction motor 15's the pivot, the cooperation is provided with tractor 17 on traction screw 16, still be provided with on tractor 17 with 6 complex traction block 18 of exit runner, traction block 18 is close to exit runner 6's one end is provided with overhead kick 19, still be provided with seal block 20 between traction block 18 and the overhead kick 19, be provided with seal groove 21 on the 20 lateral walls of seal block, be provided with sealing washer 22 in the seal groove 21, sealing washer 22 with exit runner 6 cooperation sets up, still be provided with ball groove 23 on the traction block 18 lateral wall, be provided with in the ball groove 23 with the support ball 24 of 6 lateral wall contacts of exit runner, still be provided with a plurality of traction wheels 25 on the base 1, traction wheel 25 top horizontal height with exit runner bottom horizontal height is unanimous.

In the using process, firstly, raw materials are put into the mixing chamber 26 from the feeding port 29 according to a certain proportion, then the mixing motor 27 and the heating plate 32 are started, the heating of the heating plate 32 is carried out to melt the raw materials to a molten state, the molten raw materials are stirred and mixed through the mixing support rod to ensure that the raw materials are fully mixed, then the electric control switch 38, the refrigerating sheet 42 and the suction pump 46 are started, the molten raw materials fall from the blanking pipe 36 and flow out from the quantifying hole 37, at the moment, the cutting knife 41 is driven by the transmission rod 40 to rotate to cut the molten raw materials flowing out from the quantifying hole 37 to enable the single size of the molten raw materials to reach a specified value, then the temperature in the distributing chamber 31 is reduced through the cooperation of the suction pump 46 and the refrigerating sheet 42, so that the raw materials are rapidly condensed, then the raw materials flow into the extruder 2 from the discharging port 43, then the extruder 2 is started, and the traction block 18 is pushed into an outlet flow through the traction motor 15, at the moment, molten raw materials flow into the die main body 3 from the outlet end of the extruder 2 through the inlet runner 5, flow equalized through the flow equalizing port 7, flow into the outlet runner 6 through the plurality of feeding cavities 8, and flow into the die runner 4 until the inside of the die runner 4 is completely filled, in the process, residual gas in the die runner 4 can be discharged through the exhaust valve 10, the pressure gauge 11 detects the pressure in the die runner 4 in real time, when the pressure reaches a specified value (only after the raw materials are filled in the die runner 4, the pressure can rapidly rise to the specified value), the refrigerating fluid (water can be directly selected and used) is continuously introduced through the cooling inlet 13, the traction motor 15 is started at the same time, the traction screw 16 drives the tractor 17 to deviate away from the die main body 3, the inverted hook block 19 pulls the wallboard precooled by the cooling runner 12 out of the outlet runner 6 to the traction wheel 25, subsequent melting raw materials then continues to carry out the feeding in the mould runner 4, fill, preforming, the flow of pulling out to the processing of carrying out the wallboard of continuity (this in-process need guarantee that pressure gauge 11 detection pressure is in appointed interval all the time in, with this assurance wallboard fill to be filled), only need through the cutting knife with overhead kick piece 19 and wallboard separation after pulling out, carry out operations such as size cutting and pad pasting to the wallboard again, can accomplish the production of wallboard.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a wallboard apparatus for producing protects against radiation, includes base (1), be provided with feed arrangement, mould main part (3) and extruder (2) on base (1), feed arrangement's exit end with the feed end intercommunication of extruder (2), wherein:

the feeding device comprises a mixing chamber (26), a mixing motor (27) is arranged at the top end of the mixing chamber (26), a rotating shaft of the mixing motor (27) penetrates through the mixing chamber (26) to be provided with a stirring rod (28), a feeding hole (29) is further formed in the top end of the mixing chamber (26), and a plurality of stirring support rods (30) are arranged on the stirring rod (28);

a temperature rising assembly is arranged on the side wall of the bottom end of the mixing chamber (26);

the bottom end of the mixing chamber (26) is also communicated with a distributing chamber (31);

a condensing assembly is arranged in the material distribution chamber (31);

a mould runner (4) is arranged in the mould main body (3);

the mould runner (4) comprises an inlet runner (5) and an outlet runner (6) which are communicated;

the inlet runner (5) is matched with the outlet end of the extruder (2);

a traction assembly is arranged on the base (1) and close to the outlet flow passage (6) in a sliding mode, and the traction assembly is suitable for leading out the door plate from the outlet flow passage (6);

the outlet flow channel (6) is matched with the door panel in size;

the temperature rising assembly comprises a heating plate (32) arranged on the side wall of the bottom end of the mixing chamber (26), a wall scraping block (33) is further arranged on the stirring rod (28), a wall scraping plate (34) is arranged on the wall scraping block (33), the wall scraping plate (34) is arranged in contact with the side wall of the mixing chamber (26), a plurality of blanking ports (35) are arranged between the mixing chamber (26) and the distributing chamber (31), a blanking pipe (36) is arranged at one end, close to the distributing chamber (31), of each blanking port (35), a plurality of quantitative holes (37) are formed in the bottom end of each blanking pipe (36), and an electric control switch (38) is further arranged on each blanking pipe (36);

a speed reducer (39) is further arranged between the mixing chamber (26) and the distributing chamber (31), one end, far away from the mixing motor (27), of the stirring rod (28) is connected with the speed reducer (39), a transmission rod (40) is arranged at one end, facing the distributing chamber (31), of the speed reducer (39), a plurality of material cutting knives (41) are arranged on the transmission rod (40), the material cutting knives (41) are arranged close to the quantifying holes (37), the condensing assembly comprises refrigerating sheets (42) arranged at the bottom end of the distributing chamber (31), a discharge hole (43) is further formed in the bottom end of the distributing chamber (31), and the refrigerating sheets (42) are arranged around the discharge hole (43);

the condensation component is characterized in that a plurality of material pushing plates (44) are further arranged on the transmission rod (40), the material pushing plates (44) are close to the refrigeration piece (42) and are arranged in a matched mode with the refrigeration piece (42), one end, close to the refrigeration piece (42), of each material pushing plate (44) is further provided with a material pushing brush (45), the condensation component further comprises a suction pump (46), an air suction pipe (47) is arranged in the material distribution chamber (31), the air suction pipe (47) is communicated with an air inlet end of the suction pump (46), a filter (48) is further arranged at an air outlet end of the suction pump (46), the air suction pipe (47) is wound in the material distribution chamber (31), and an air inlet (49) is further formed in one side, close to the middle position of the material distribution chamber (31), of the air suction pipe (47);

the mould runner (4) further comprises a flow equalizing port (7) arranged between the inlet runner (5) and the outlet runner (6), a plurality of feeding cavities (8) are arranged between the flow equalizing port (7) and the outlet runner (6), one end of the flow equalizing port (7) is communicated with the inlet runner (5), the other end of the flow equalizing port (7) is communicated with the outlet runner (6), a drainage plate (9) is further arranged in the flow equalizing port (7), one end of the drainage plate (9) is arranged close to the outlet runner (6), and the other end of the drainage plate (9) is arranged close to the high-level end of the flow equalizing port (7);

an exhaust valve (10) is arranged at the top end of the mold runner (4), a pressure gauge (11) is further arranged on the side wall of the mold runner (4), a cooling runner (12) is wound on the outlet runner (6), and a cooling inlet (13) and a cooling outlet (14) are arranged at two ends of the cooling runner (12);

the traction assembly is arranged on the base (1) and comprises a traction motor (15), a traction screw (16) is arranged in a rotating shaft of the traction motor (15), a tractor (17) is arranged on the traction screw (16) in a matched mode, a sealing block (20) is further arranged between the traction block (18) and the inverted hook block (19), a sealing groove (21) is formed in the side wall of the sealing block (20), a sealing ring (22) is arranged in the sealing groove (21), the sealing ring (22) is arranged in the outlet flow channel (6) in a matched mode, a ball groove (23) is further arranged on the side wall of the traction block (18), a supporting ball (24) in contact with the side wall of the outlet flow channel (6) is further arranged in the ball groove (23), a plurality of traction wheels (25) are further arranged on the base (1), the horizontal height of the top of each traction wheel (25) is consistent with the horizontal height of the bottom end of the outlet flow channel (6).