8 results about "Frost crack" patented technology

The water path structure comprises a first filter element, a raw water path, a pure water path and a waste water path, one end of the raw water path is communicated with a raw water opening, the other end of the raw water path is communicated with a water inlet of the first filter element, a water inlet valve and a booster pump are arranged on the raw water path, and the booster pump is located between the water inlet valve and the first filter element; the pure water path is communicated with a pure water outlet of the first filter element; the wastewater path is communicated with a wastewater outlet of the first filter element, and an air inlet valve is arranged on the pure water path, so that external air can enter the pure water path; the water path structure further comprises an emptying water path, the water inlet end of the emptying water path is connected with the pure water path, the water outlet end of the emptying water path is connected with the raw water path, and an emptying valve is arranged on the emptying water path. The waterway structure and the water purifier can effectively prevent the problem of frost crack of the filter shell caused by freezing of water retained in the waterway and the filter element in a low-temperature environment, are reliable in operation, and do not influence the normal work of the whole machine.

The invention discloses a frost crack prevention overflowing water sterilization device which comprises a mounting sleeve, a sterilization module and a quartz tube and further comprises sealing end caps, and the sealing end caps are mounted at the two ends of the quartz tube; the sealing end cap comprises a base pad, a top seat, a sealing mechanism and an inner supporting mechanism, the top seat is arranged on one side of the base pad and abuts against the inner end of the mounting sleeve, a connecting hole is formed in the top seat, the inner supporting mechanism and the sealing mechanism are arranged on the other side of the base pad, and the end of the quartz tube is inserted between the sealing mechanism and the inner supporting mechanism; according to the anti-frost-crack overflowing water sterilization device, the quartz tube is mounted in the mounting sleeve through the two sealing end caps, a plurality of extrusion cavities are formed in the sealing end caps by optimizing the mechanisms of the sealing end caps, and meanwhile, the sealing end caps are integrally made of elastic sealing materials such as silica gel, so that when fluid in the quartz tube is frozen and expanded, the fluid in the quartz tube is prevented from being frozen and expanded; and the quartz tube has enough buffer space, so that the overall frost crack prevention performance of the device is effectively improved.

The utility model discloses a pressing valve core capable of automatically discharging residual water in a pipe, which comprises an outer shell and a bottom shell arranged at the bottom of the outer shell, the bottom of a rotating rod is abutted against a piston capable of moving up and down, the top of the bottom shell is provided with a spring abutted against the piston, the piston is provided with a water passing pipe extending to the bottom shell, and the water passing pipe is connected with the rotating rod. The outer side of the bottom shell is provided with a water drainage hole and a water inlet hole, the inner side of the bottom shell is provided with a water outlet channel communicated with the water inlet hole, and the outer side of the water passing pipe is provided with a water drainage passing hole corresponding to the water drainage hole. The drainage device is simple in structure, when the pressing rod is pressed down and is not rebounded under the action of the rotating rod, the drainage through hole of the piston is communicated with the drainage hole and is in a drainage state, meanwhile, the water outlet channel is closed, and residual water in a water pipe is automatically and rapidly drained and does not drip continuously; the frost crack phenomenon of the water outlet pipe at the extremely low temperature and the scaling problem caused by the fact that residual water is not discharged out of silica gel water outlets of a top shower and a handheld shower head are avoided.

The frost crack prevention water mixer comprises a water mixing channel shell and a frost crack prevention mechanism, the water mixing channel shell is provided with a cold water inlet, a hot water inlet, a water mixing cavity, a pressure relief opening and a plurality of water outlets, and the cold water inlet, the hot water inlet, the pressure relief opening and the water outlets are all communicated with the water mixing cavity; the frost crack prevention mechanism comprises a fixing block, a diaphragm and an elastic piece, the fixing block and the diaphragm are fixedly connected to the pressure relief opening, the diaphragm seals the pressure relief opening, one end of the elastic piece abuts against the fixing block, the other end of the elastic piece is fixedly connected with a cushion block, and the elastic piece is used for driving the cushion block to move in the direction away from the fixing block so that the cushion block can abut against the diaphragm. According to the frost crack prevention water mixer, the expansion volume of ice can be absorbed, and the possibility that the water mixing channel shell and the valve are cracked and damaged is reduced.

The invention discloses a disc type asphalt concrete low-temperature frost crack test method and device, and belongs to the technical field of hydraulic engineering and road engineering material tests. The device comprises a disc clamp system, a leveling cementation layer simulation structure, an angle adjustable structure, a low-temperature constant-temperature test box, a strain monitoring system and a control module. The disc clamp system consists of an upper disc clamp and a lower disc clamp and is used for clamping a circular test piece and simulating actual constraint of a peripheral panel; the leveling cementation layer simulation structure is arranged at the upper part of the lower disc and simulates lower constraint; and the angle adjustable structure can realize adjustment within a certain angle range. During testing, a test piece is installed in the clamp, the temperature is reduced in the low-temperature constant-temperature box according to a set program, the strain of the test piece is collected in real time through the strain monitoring system, and the frost crack temperature is automatically judged by the control module according to strain mutation. According to the invention, the multidirectional constraint state of the asphalt concrete panel in an actual structure can be truly simulated, the test result is accurate, and the engineering applicability is high.

The utility model relates to solar water heater technical field especially relates to a solar water heater pipeline anti -frost crack device, including the water heater main part, the upper end of water heater main part is provided with the water tank, the inboard of water tank is provided with heating assembly, the outside of water tank is provided with the heat preservation storehouse, the upper end of heat preservation storehouse is provided with the heat preservation board, the front and back sides of heat preservation board are provided with the limit slot, the front and back sides of heat preservation storehouse are fixedly installed with the limit seat, the outside of limit seat is provided with locking screw rod, the outside of locking screw rod is provided with the limit block, the left and right sides of limit block are provided with the limit board, the right side of water tank is connected with the water inlet and outlet pipe, the outside of water inlet and outlet pipe is provided with the heat preservation cover, the outside of heat preservation cover is provided with locking assembly, the utility model discloses through the rotation locking screw rod control limit block and limit slot interlock, realizes the quick fixation to heat preservation board, the heat preservation cover is set up in the water inlet and outlet pipe outside, through the locking assembly is connected in the heat preservation cover outside, realizes the fixation to heat preservation cover.

The utility model discloses a urea pump assembly with an anti-frost-crack shell, which comprises the shell, a water inlet pipe, a water outlet pipe and an electromagnetic valve, the water inlet pipe, the water outlet pipe and the electromagnetic valve are arranged in the shell, and elastic fillers are arranged in the water inlet pipe and the water outlet pipe. The device has the advantages of capability of automatically absorbing and expanding, low use difficulty, low application cost and the like.

The utility model discloses a frost crack prevention spray irrigation pipeline structure for agricultural irrigation, which comprises a body mechanism and an integrated heat preservation mechanism which is arranged on the outer side of the body mechanism, enables heat preservation materials to be evenly wrapped on the outer wall of a pipeline at a time through integral stretching, simplifies operation procedures and guarantees anti-freezing effects. The integrated heat preservation mechanism comprises shock insulators which are movably connected to the outer side of the spray irrigation pipeline and are symmetrically arranged, the side frames on the upper portion are fixed, erection of heat preservation materials on the outer wall of the spray irrigation pipeline is completed, the situation that workers manually coil the heat preservation materials on the outer wall of a pipe body circle by circle can be reduced while the anti-freezing capacity of the pipe body is guaranteed, and the work efficiency is improved. And under the condition that the operation process is simplified and the physical output of personnel is reduced, the situation that the anti-freezing effect of the pipe body is reduced due to the fact that part of the outer wall of the pipe body is directly exposed in the external environment due to non-uniform wrapping thickness of the thermal insulation material or gaps between the materials in the manual coiling process is also reduced.