36results about How to "Avoid seal leaks" patented technology

The object of the present invention is to inject a sealing material into a cap receiving an electric cable joint without remaining air bubbles. The cap having an opening at both ends receives an electric cable joint, the electric cable being in the upper side and the joint being in the lower side, the sealing material is injected into the cap from the lower opening. Moreover, the sealing material is injected into the cap having the opening at the top and bottom from the lower opening and the electric cable joint is inserted into the cap from the upper opening. Moreover, the electric cable joint is received in the cap having the opening at both sides, the sealing material is injected into the cap from the upper opening and the cap is reversed up and down to leave. Moreover, the sealing material is injected into the cap having the opening at both sides, from the upper opening and the electric cable joint is inserted into the cap and the cap is reversed up and down to leave. It is utilized that the cap holder receives the cap in the state that the upper and/or lower opening of the cap is covered.

Safety valve for the venting circuit of a liquid tank Safety valve for the venting circuit of a liquid tank, comprising: a) a chamber (1) provided with a cover (2), which extends at least partly into the tank and is connected via an aperture (4) to the venting circuit; b) a float (7), which can slide vertically inside the chamber (1) and close off the venting aperture (4) in a high position; and c) a moveable wall (3), which divides the chamber (1) into a lower portion (1′) in which the float (7) slides and an upper portion (1″) which connects with the venting circuit, this wall (3) being a moveable wall and having the venting aperture (4), said valve further including an aperture stop (13) integral either with the moveable wall (3) or with the cover (2).

The invention relates to a floating sealing structure of a thrust shaft rod. The structure comprises a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, a shaft rod, a bolt, gland, a first ball ring, a second ball ring and a valve cover, wherein the first ball ring and the second ball ring are central cylindrical holes; the bottom of the middle hole of the valve core is a spherical surface matched and connected with the spherical surface of the first ball ring; the upper part of the valve cover is provided with a cylindrical hole; the gland is disc-shaped, an upper flange of the gland is fixed on the valve core through the bolt, and the hollow bottom of the gland is a spherical surface matched and connected with the spherical surface of the second ball ring; and the shaft rod is a cylindrical rod, the middle of which is provided with a shaft shoulder, and the shaft shoulder of the shaft rod is clamped between the first ball ring and the second ball ring. Compared with the prior art, the floating sealing structure has the advantages of good sealing property, long service life and the like.

The invention relates to a stacking mold which is provided with a fixed mold block, a movable mold block and a middle mold block, wherein the middle mold block is arranged between the fixed mold block and the movable mold block, and the movable mold block and the middle mold block move to the fixed mold block until the middle mold block and the fixed mold block form a first mold cavity and the movable mold block and the middle mold block form a second mold cavity; the stacking mold further comprises an injection molding flow channel, wherein the central axis of a main body of a main flow channel of the injection molding flow channel is arranged in a central plane, which is perpendicular to the direction of the moving axis of the movable mold block, of the middle mold block. According to the stacking mold, materials enter the injection molding flow channel through the middle mold block without penetrating through a parting surface, so that the pressure of each mold cavity is balanced, and additionally, the problem of seal leakage of the materials during mold opening is avoided.

A semiconductor device comprises: a first and second die pads arranged side by side; a plurality of inner leads arranged around the first and second die pads; first and second chips mounted on the first and second die pads; a bar provided between the first and second chips and the plurality of inner leads, extending in an array direction of the first chip and the second chip; a plurality of wires that connect the first and second chips and the plurality of inner leads and connect the first chip and the second chip; and resin that seals the first and second die pads, the plurality of inner leads, the first and second chips, the plurality of wires and the bar, wherein the bar comprises a mark provided at a position corresponding to an area between the first chip and the second chip in an array direction of the first chip and the second chip.

A preheating type combustion coil condensation heat exchanger comprises a detachable main body, and a pretreatment device for preheating and mixing the to-be-combusted gas through the own waste heat,a combustor facilitating gas combustion and a heat collecting device facilitating the energy absorption of a media are sequentially arranged on the detachable main body along the gas flowing direction. According to the present invention, various performance indexes of the heat exchanger meet the standard of GB25034-2010 gas heating water heater, the problem of condensate water corrosion can be effectively solved, the emission amount of the nitric oxide (lower than 30 mg/M3) and the CO is lower than 300 ppm, a coil pipe can be detached to be cleaned or replaced, the after-sales maintenance is facilitated, and the temperature of the combustion cavity is effectively reduced.

The invention relates to a dry-process granulating machine for anti-tumor medicines. The dry-process granulating machine comprises a box body, and a material conveying device, an upper press roll, a lower press roll, a crushing mechanism and a granulating mechanism which are arranged on the box body, wherein a front cover mechanism is arranged at the outer side of the box body; the upper press roll, the lower press roll, the crushing mechanism and the granulating mechanism are respectively arranged in the front cover mechanism, and form a granulating area together with the front cover mechanism; a material charge device is arranged on the material conveying device, and the front cover mechanism is connected with a material discharge device; the front cover mechanism comprises a front coverframework, a front cover back panel and a front cover front panel, the front cover back panel is arranged at one side of the front cover framework, and the front cover front panel is arranged at theother side of the front cover framework; an installation hole of the upper press roll, an installation hole of the lower press roll, an installation hole of the crushing mechanism and an installationhole of the granulating mechanism are formed in the front cover back panel; one side of the front cover framework is provided with a material inlet, and is connected with the material conveying deviceby the material inlet via a flange. The dry-process granulating machine has the beneficial effects that the structure of the front cover mechanism is compact, the design is reasonable, and the good sealing property of the front cover structure is improved.

The invention discloses an internal heating three-cylinder vacuum drying cabin. The vacuum drying cabin includes a three-cylinder drying cabin, a feeding device, a discharging device, a plate-type heating device, gear rings and raceways; the three-cylinder drying cabin includes an outer drying cylinder, a middle drying cylinder, an inner drying cylinder and spiral blades; the plate-type heating device includes heat conduction hollow boards and a heat conduction pipe; the plate-type heating device is installed in the three-cylinder drying cabin; and the heat conduction and heat dissipation of heat energy carried by heat-conducting media can be performed through the plate-type heating device. The internals of the heat conduction hollow boards do not communicate with the internals of the adjacent heat conduction hollow boards, so that the using of the whole three-cylinder drying cabin cannot be affected when some heat conduction hollow board is damaged to cause leakage; an air exhaust opening exhausts moisture out of the three-cylinder drying cabin, and the plate-type heating device performs stirring and pushing on materials during drying, so that the drying uniformity of the materials can be enhanced; and the materials can be continuously taken in and out of the three-cylinder drying cabin through the feeding device and the discharging device, so that continuous vacuum drying canbe performed on the materials.

The invention discloses a wind driven generator blade root area surface flow control mechanism which comprises a blade, a self-vibration reed, a clamping component, a first sealing plate, a second sealing plate and a clamping box, the outer surface of the blade is provided with a mounting groove matched with the self-vibration reed, the self-vibration reed is mounted in the mounting groove, and the clamping box is arranged in the mounting groove. Two third sealing plates are mounted on the end face, close to the mounting groove, of the inner wall of the blade, the third sealing plates are perpendicular to the inner wall of the blade, the two third sealing plates are oppositely mounted, a sealing groove is formed in each third sealing plate, and a sliding plate is slidably connected to the interior of each sealing groove; the clamping block can be clamped to the gap between the first sealing plate and the second sealing plate for sealing, the first sealing rubber is arranged on the outer wall of the clamping block so that sealing can be achieved between the clamping block and the first sealing plate and between the clamping block and the second sealing plate, and the effect of preventing water and air from entering is achieved.

The invention discloses a swing type control valve. The swing type control valve comprises a swing reversing mechanism and a valve body sealing cover which are arranged in a mounting cavity, wherein the valve body sealing cover is arranged at the air outlet end of a valve body; the swing reversing mechanism comprises a speed reduction steering gear set; an input shaft of the speed reduction steering gear set is connected with a driving mechanism; an output shaft of the speed reduction steering gear set is in transmission connection with the valve body sealing cover and drives the valve body sealing cover to be opened and closed; a pilot pressure relief hole is formed in the valve body sealing cover; a pilot sealing cover matched with the pilot pressure relief hole is arranged on the valve body sealing cover; and when the control valve is opened, the swing reversing mechanism firstly opens the pilot sealing cover and then opens the valve body sealing cover. According to the swing type control valve, the valve body sealing cover can be quickly opened and closed, and a sealing surface of the valve body sealing cover and a valve body sealing opening are free of friction in the opening and closing process, so that the circumstance of damage of the sealing surface, leakage and venting are reduced, and the service life of the valve is prolonged; and pilot pressure relief is carried out through the pilot sealing cover, so that the torque required during opening is reduced, and the explosion-proof safety of a product is improved.

The invention is applicable to the field of deep pipeline thread sealing materials, and provides a deep thread sealing slurry line and a manufacturing method and device thereof. The manufacturing method of the deep thread sealing slurry line comprises the following step that slurry is extruded to be applied to chemical fiber filaments, and thus the deep thread sealing slurry line is obtained; wherein the slurry is prepared from the following components in parts by weight: 40-45 parts of dimethyl silicone oil, 30-35 parts of talcum powder, 5-10 parts of white carbon black and 5-10 parts of hydroxypropyl methyl cellulose. The thread sealing slurry line with high viscosity, high strength and excellent sealing performance is prepared by coating the chemical fiber filaments with corresponding slurry, has the characteristics of wear resistance, self-lubricating property, high and low temperature resistance, aging resistance and corrosion resistance, can be used for a long time within a widetemperature range, and is not cured within the temperature range, so that the original viscosity and self-lubricating property are maintained, and the better adhesion is realized in the mounting process.

This invention refers to a semiconductor device capable of easily performing chip contraposition when a lower die pad carries two chips in transversely arranged. A plurality of inner leads (15) is arranged around the first and second die pads which are arranged side by side. First and second chips (16, 17) are mounted on the first and second die pads (11, 12). A bar (18) is provided between the first and second chips (16, 17) and the plurality of inner leads (15), extending in an array direction of the first chip (16) and the second chip (17). A plurality of wires connects the first and second chips (16, 17) and the plurality of inner leads (15) and connects the first chip (16) and the second chip (17); and a resin (21) seals the first and second die pads, the plurality of inner leads, the first and second chips, the plurality of wires and the bar, wherein the bar (18) comprises a bump (19) as a mark provided at a position corresponding to an area between the first chip (16) and the second chip (17) in an array direction of the first chip and the second chip.