40results about How to "Guaranteed foaming quality" patented technology

The invention relates to foaming agent of waterproof foam concrete, a preparation method and a construction method, which belongs to the fields of construction materials, a preparation method thereof and an architectural method thereof. The foaming agent of the invention comprises the following raw materials in part by weight: 30 to 35 parts of keratinous albumen powder, 4 to 5 parts of Ca(OH)2, 1.5 to 2.5 parts of NaHSO3, 270 to 320 parts of water, 0.8 to 1.5 parts of sodium dodecyl benzene sulfonate (SDBS), 0.2 to 0.7 part of sodium dodecyl sulfate, 0.8 to 1 part of gelatin and 0.5 to 1 part of trolamine. The weight of sulphamic acid is matched with that of Ca(OH)2 and NaHSO3, and the pH value of the mixed three materials reaches 7.

The invention discloses a freezer and an inner container assembly for the same. The inner container assembly comprises an inner container and an opening frame, a ribbed ring which extends along the horizontal direction is arranged at the outer peripheral edge of the inner container, a first slot matched with the ribbed ring is arranged at the inner peripheral edge of the opening frame, a second slot which extends along the vertical direction and is adjacent to the outer peripheral edge of the opening frame is arranged on the lower surface of the opening frame, and the ribbed ring of the inner container is fittingly arranged in the first slot of the opening frame. According to the inner container assembly in an embodiment of the invention, the first slot and the second slot can be respectively matched with the inner container and a shell, and the position of the inner container is limited in the vertical direction, so that production and assembly of the freezer are facilitated. In addition, the inner container is prevented from falling off, a foam layer of the freezer has a preset thickness, the rejection rate of the freezer is reduced, the freezer is attractive, the foaming quality of the freezer is guaranteed, the freezer is simple in structure, assembly efficiency is improved, and cost is lowered.

The invention discloses a premixing and homogenizing coupling type bubble generator. The bubble generator comprises a gas-liquid premixing section, a gas-liquid intensified mixing section, a gas-liquid homogenizing section and a vortex breaking section which are connected in sequence; the gas-liquid pre-mixing section is configured to perform primary shearing dispersion on gas-liquid two phases by utilizing high-speed turbulent flow to form a gas-liquid mixing dispersion field; the gas-liquid reinforced mixing section comprises a swirling section and a contraction section which are sequentially distributed, and a multi-dimensional swirling flow field is formed in the swirling section and is configured to induce the gas-liquid mixed phase from the gas-liquid premixing section to generate swirling flow motion; a flow channel of which the diameter is gradually reduced along the flowing direction of the gas-liquid mixed phase is formed in the contraction section; at least two stages of venturi tube-shaped flow channels which are connected in series are formed in the gas-liquid homogenizing section; and a micro-channel is formed in the vortex breaking section.

The invention discloses foaming equipment, which is used for foaming a preassembled component with a defined foaming space. The foaming equipment comprises a foaming mold, a first exhaust mechanism, a second exhaust mechanism, a first negative pressure supplying device, a sealing shell, an external exhaust mechanism and a second negative pressure supplying device, wherein the foaming mold is provided with a defined mold cavity; the first exhaust mechanism is communicated with the mold cavity; the second exhaust mechanism is arranged in the foaming space in an extending manner and is communicated with the mold cavity; the first negative pressure supplying device is connected with the first exhaust mechanism; the sealing shell is sheathed outside the foaming mold and the first negative pressure supplying device; the external exhaust mechanism and the second negative pressure supplying device are connected. According to the foaming equipment disclosed by the embodiment of the invention, negative pressure of air can be transferred into the foaming space by the second exhaust mechanism evenly, so that an insulating layer obtained after foaming has better insulating performance, the foaming materials can be saved, and the cost is reduced. In addition, due to the arrangement of the sealing shell, the foaming quality is guaranteed. The invention further discloses a foaming process employing the foaming equipment and a foaming process of refrigerating equipment.

The invention discloses an automatic foaming production line for car mats. The automatic foaming production line comprises a stirring tank; the axis at the top of the stirring tank is fixedly connected with a first motor; an output end of the first motor penetrates through the top of the stirring tank and extends to the inner cavity of the stirring tank; the bottom of the output end of the first motor is fixedly connected with a transmission rod; and stirring rods are fixedly connected with two sides of the surface of the transmission rod. Through cooperative using of the stirring tank, the first motor, the transmission rod, the stirring rod, a vulcanizing agent cabin, a foaming agent cabin, a heating block, a bottom plate and a feeding pipe, rubber materials can be dynamically vulcanized,so that the foaming effect is better ensured, rubber compounds can be pre-formed and then the forming work of rubber products is better ensured; and vulcanization and foaming are carried out on the pre-formed rubber products through a conveyer belt and a drying box, so that the foaming quality is better ensured, the working difficulty is reduced, the production cost is reduced and the product yield is improved.

The invention belongs to the technical field of insulation board foaming, and particularly relates to a polyurethane insulation board foaming system. The polyurethane insulation board foaming system comprises a material distributing device, a metering device, a foaming device, a spraying device and a forming device; the material distributing device is used for storing different distributed materials; and the metering device is used for metering and transporting the distributed materials stored by the material distributing device to the foaming device. According to the polyurethane insulation board foaming system, through cooperation of a pressing plate and a hydraulic push rod, the pressing plate can scrape off materials adhering to the inner wall of a shell, on the one hand, the situation that the materials adhere to the inner wall of the shell is reduced, and the labor intensity of workers is relieved, on the other hand, the residual quantity of the materials is reduced, and thus the mixing quality of the distributed materials is improved; and through arrangement of the pressing plate, the sealing effect in the shell is improved, the air inlet quantity is reduced, the quantity of oxidized polyether polyol in the distributed materials is reduced, the quality of the distributed materials is improved, then the foaming effect of the mixed materials is improved, and the quality of products generated through foaming is improved.

The invention discloses an electric-drive pull-back type microwave heating foaming forming machine and a foaming forming method thereof. The electric-drive pull-back type microwave heating foaming forming machine comprises a rack, a foaming forming mechanism, a charging basket, a vacuum cooling device, an electric cabinet, a driving motor and a transmission mechanism, wherein the foaming forming mechanism comprises fixed dies, movable dies, fixed die frames, movable die frames and foaming material injection pipes; each fixed die frame and the corresponding movable die frame are combined to form a complete die cavity; each die cavity corresponds to at least one foaming material injection pipe; at least one microwave shielding cover is arranged on each fixed die; at least one microwave shielding cover matched with the microwave shielding cover is arranged on each movable die; the movable die frames and the fixed die frames are made of high-temperature-resistant insulating materials; the fixed dies are positioned between the movable dies and the driving motor; and the driving motor drives the movable dies to move horizontally. According to the electric-drive pull-back type microwave heating foaming forming machine, microwave heating liquid is adopted to generate steam to be matched with foaming plastic for foaming, the structure is simple and compact, the overall size of the foaming forming machine is reduced, the energy consumption is relatively low, no pollution is caused, and the manufacturing and using costs are low.

The invention discloses a polyurethane raw material temperature control method for a refrigerator, and relates to the technical field of polyurethane foaming. The method comprises the following steps:(1) a rated temperature range T1 of raw materials in a raw material tank and a rated temperature range T2 of raw materials in an injection gun head are set; and a raw material temperature differencevalue in the raw material tank and in the injection gun head is a rated difference value delta T; (2) actual temperatures of the raw materials in the raw material tank and in the injection gun head are detected; (3) a difference value of the actual temperatures of the raw materials in the raw material tank and in the injection gun head is calculated; and (4) the temperature of the raw materials inthe raw material tank is controlled according to a difference value between the actual temperature difference and the rated difference value. The temperature of the raw material tank is controlled through detection of the difference value of the actual temperatures of the raw materials in the raw material tank and in the injection gun head, so that the temperature of the raw materials in the injection gun head can be timely adjusted, and the problem of influence on the foaming quality due to easy exceeding of the set range caused by larger temperature change of the raw materials in a traditional injection gun head is solved.

The invention relates to an air filter element polyurethane (PU) end cover foaming, curing and height-limiting device which comprises a lower-layer assembly line, an upper-layer assembly line, screw rod synchronous lifting mechanisms, positioning mechanism and multiple heating plates. The positioning mechanisms comprise bases, guide pillars and upper-layer fixing frames arranged on two sides of the upper-layer assembly line; guide sleeves are arranged on the upper-layer fixing frames; the guide pillars are arranged on the bases; the upper-layer fixing frames are arranged on the guide pillars through the guide sleeves in a sleeving way; the lower-layer assembly line is arranged on the base and comprises a conveyor chain plate; a chain plate supporting plate is arranged under the upper-end conveyor chain plate; a heating plate is arranged on the lower end face of the chain plate supporting plate; and the screw rod synchronous lifting mechanisms comprise screw rod servo motors, speed reducers, screw rods and couplers. According to the device, the foaming height of a filter element is limited through the height between the upper-layer assembly line and the lower-layer assembly layer, so that the consistency of the filter element height is good, the foaming quality is good, the appearance of the product is not affected, and the labor intensity of workers is reduced.

The invention discloses an electric-drive front-pushing type microwave heating foaming forming machine and a foaming forming method thereof. The electric-drive front-pushing type microwave heating foaming forming machine comprises a rack, a foaming forming mechanism, a charging basket, a vacuum cooling device, an electric cabinet, a driving motor and a transmission mechanism, wherein the foaming forming mechanism comprises fixed dies, movable dies, fixed die frames, movable die frames and foaming material injection pipes; each fixed die frame and the corresponding movable die frame are combined to form a complete die cavity; each die cavity corresponds to at least one foaming material injection pipe; each fixed die is provided with at least one microwave shielding cover; each movable die is provided with at least one microwave shielding cover matched with the microwave shielding cover; the movable die frames and the fixed die frames are made of high-temperature-resisting insulating materials; the movable dies are located between the fixed dies and the driving motor; and the driving motor drives the movable dies to move horizontally. According to the electric-drive front-pushing type microwave heating foaming forming machine, microwaves are used for heating liquid to generate steam and the steam is matched with foaming plastic to foam; and the electric-drive front-pushing type microwave heating foaming forming machine has a simple and compact structure, the whole volume of the foaming forming machine is reduced, the energy consumption is relatively small, no pollution is caused and the manufacturing and utilization cost is reduced.

The invention discloses a box foaming and conveying system with a heat preservation function, and relates to the technical field of refrigerator production and manufacturing. The device comprises a heat preservation box and a drying box which are carried on a transport vehicle, wherein one side of the heat preservation box is provided with a heat preservation box door body which can be pulled up and down; the heat preservation box and the heat preservation box door body are both made of heat preservation materials. A conveying belt mechanism A used for placing a box body to be foamed is arranged in the heat preservation box; a heating fan device is arranged at the top in the drying oven, an inlet is formed in one side of the drying oven, and a conveying belt mechanism B used for containing a box body to be foamed is arranged in the drying oven. The thermal insulation box is arranged on the transport vehicle for carrying the to-be-foamed box body, so that the thermal insulation function is provided, the thermal loss in the box body foaming and conveying process is reduced, the to-be-foamed box body is kept at the temperature, the product foaming quality is guaranteed, meanwhile, the product consistency is improved, and the rejection rate is reduced.