33results about How to "Seal applicable" patented technology

The invention discloses a multilayer rubber sealing ring sealing device suitable for sealing the joint of a cavity port and a cavity cover of a vacuum cavity. The multilayer rubber sealing ring sealing device comprises a plurality of rubber sealing rings. The vacuum cavity is provided with containing tanks around the cavity port, the containing tanks are just opposite to the cavity cover, the rubber sealing rings are contained in the containing tanks in one-to-one correspondence and protrude the containing tanks, a cooling tank just opposite to the cavity cover is arranged between the neighboring containing tanks, and cooling pipes in hollow structures are contained in the cooling tanks in one-to-one correspondence; and air exhaust channels are also arranged on the side wall of the vacuum cavity, one ends of the air exhaust channels are communicated with external vacuum equipment, and the other ends of the air exhaust channels are respectively communicated with the cooling tanks. The invention aims to provide the multilayer rubber sealing ring sealing device having the advantages of simple and compact structure, good anti-leakage performance, long service life and multilayer sealing effect.

The invention relates to single-component flexible sealing grease, which is mainly applied to the sealing of the cylinder junction surface of a steam turbine of a thermoelectric generator unit. The sealing performance of a junction surface of the thermoelectric generator unit can guarantee whether the unit can safely operate at high temperature and high pressure, but the prior sealing material fails to maintain the sealing performance at high temperature and high pressure. The sealing grease is characterized in that the sealing grease is a liquid pasty fluid at normal temperature, is easy to store and construct, and can be quickly cured when the sealing grease is heated to certain temperature; and a colloid is changed into a sealing material with certain toughness, can resist high temperature of 680 DEG C and high pressure of 320MPa, is surface chemistry resistant and anti-creeping, and can effectively prevent gas or liquid media from being leaked.

The invention discloses a movable sealing device and a use method thereof and belongs to the field of sealing pieces of mechanical devices. The movable sealing device comprises an outer ring body, an inner ring body and a rubber seal ring. The movable sealing device further comprises a limiting rod. The outer ring body and a bearing cover are fixed through bolts and can meet the demand for a large gap between a compression roller and a rotating shaft. The rubber seal ring is arranged in the inner ring body, so that the side, close to the rotating shaft, of the inner ring body is in tight contact with the rotating shaft. The two radial opposite outer sides of the inner ring body are of a plane structure. The limiting rod is arranged between the plane structure of the inner ring body and the outer ring body. When the rotating shaft and an end cover move, the inner ring body and the rubber seal ring in the inner ring body can horizontally move relative to the outer ring body, and then the seal function is achieved. The movable sealing device has the advantages of being simple in structure, reasonable in design, easy to manufacture and good in seal effect and is particularly suitable for seal between a movable piece and a fixed piece.

The invention discloses a spring force storage type air channel valve for sealing. The spring force storage type air channel valve comprises a blocking cover (3), a lead screw, a seal ring and a motor (11) and further comprises a body (1), a fixed frame (2), a bearing bush, a ball head, a blocking ring, a pull rod and a compressed spring. During working, the fixed frame (2) is fixed to the body (1), and the lead screw stretches out or retracts relative to the body (1). Under the stretching-out working condition, the lead screw stretches out and pushes the blocking cover (3) downwards, so that the blocking cover (3) does not press an air channel inlet tightly any longer, and an air channel is opened. Under the retracting working condition, when the lead screw retracts to the in-place position, the seal ring makes contact with the air channel inlet and does not move any longer, meanwhile, the body (1) sends a in-place closing signal, after an external circuit receives the in-place closing signal, delaying is conducted for the specified duration, and electricity is turned off. After electricity of the external circuit is turned off, the lead screw stops moving, and at the moment, the compressed spring is in the force storage state and provides sealing compressed force all the time. The spring force storage type air channel valve has the characteristics that workload is low, the sealing compressed force can be controlled, the function is reliable, and process control is easy.

The invention discloses a magnetic liquid sealing device with a self-cleaning function, which belongs to the technical field of mechanical engineering sealing and comprises a shell (2), a left bearing (3), a left pole shoe (5) with a rubber seal ring, a permanent magnet (6), a right pole shoe (8) with a rubber seal ring, a right bearing (10), an adjusting gasket (11), a flange disk (13) and a shaft (14). The right end face of the right pole shoe and an axle line form an angle alpha of 10 to 80 degrees to change the shape of the right pole shoe and the magnetic field strength, so that the magnetic field strength on the side a of the right pole shoe is higher than that on the side b. According to Bernoullis equation, the pressure of the granules entering a magnetic liquid from outside on the side with high magnetic field strength is higher that on the side with low magnetic field strength, namely the pressure on the side a is more than that on the side b. The system generates a repulsive force to outside foreign materials so as to fulfil the aim of self cleaning.

The invention discloses a fluid transition water sealing device for a rotatable pipeline. The fluid transition water sealing device comprises sliding sleeves which are fixedly mounted on rotatable shaft heads and can rotate along the rotatable shaft heads, fluid transition pipes fixedly arranged through supporting seats, one end of each fluid transition pipe being connected internally to each sliding sleeve in a sleeving manner, and sealing mechanisms arranged between the fluid transition pipes and the sliding sleeves, wherein the sealing mechanisms comprise annular water storage tanks arranged along the circumferential directions of the outer walls of the fluid transition pipes, water supply tanks which are arranged on the outer walls of the fluid transition pipes and are communicated to the outside through the water storage tanks, and sealing rings arranged between the sliding sleeves and the fluid transition pipes; the water storage tanks are arranged between the rotatable shaft heads and the sealing rings. According to the fluid transition water sealing device, water protection layers can be formed between the sliding sleeves and the fluid transition pipes and can continuously drain water to one side of each rotatable shaft head, to effectively prevent mud from entering the sealing device; furthermore, cooling can be provided for the relative rotation motion between the sliding sleeves and the fluid transition pipes, and wear between the sliding sleeves and the fluid transition pipes can be effectively relieved; the fluid transition water sealing device is applicable to sealing for transition of all types of fluid.

The invention discloses a sealing adhesive for a cable joint box and a preparation method thereof, and belongs to the technical field of preparation of the sealing adhesive. The sealing adhesive comprises organic silicone rubber, high-molecular weight polyisobutene, medium-molecular weight polyisobutene, low-molecular weight polyisobutylene, inorganic filler, an antioxidant, carbon black as a coloring agent and a mothproofing agent. The preparation method comprises the following steps of: S1. weighing: weighing raw materials; S2. kneading: adding the raw materials for kneading; S3. blending: blending the kneaded sizing materials; S4. extruding: extruding the blended sizing materials, and then cooling and cutting to prepare the sealing adhesive for the cable joint box. The sealing adhesive disclosed by the invention has the advantages of excellent binding property, filling property, sealing property, water resistance, high-low temperature resistance, acid resistance, alkali resistance, salt resistance and dielectric property. The preparation method disclosed by the invention has the characteristics of health, environmental friendliness, simple production process, no solvent, time and energy conservation, low cost and suitability for industrial large-scale production.

The invention discloses a multi-layer rubber sealing ring sealing device, which is suitable for sealing the connection between the cavity mouth of the vacuum cavity and the cavity cover, and includes several rubber sealing rings, and a surrounding ring is provided at the vacuum cavity facing the cavity cover. The accommodating grooves at the mouth of the cavity and the rubber sealing rings are accommodated in the accommodating grooves one by one and protrude from the accommodating grooves. There is a cooling groove facing the cavity cover between adjacent accommodating grooves. A corresponding hollow cooling pipe is accommodated, and an air extraction channel is provided on the side wall of the vacuum cavity. One end of the air extraction channel communicates with external vacuum equipment, and the other end of the air extraction channel communicates with the cooling groove respectively. The object of the present invention is to provide a multi-layer rubber sealing ring sealing device with simple and compact structure, good anti-leakage performance and long service life with multi-layer sealing effect.

The invention discloses a preparation method of a joint sealing material. The preparation method comprises the following steps: a component A and a component B are prepared, a polyurethane prepolymer and a curing agent are prepared respectively, the component A and the component B are prepared in the weight ratio being 1:2 in a construction site, and joints are filled with a caulking gun. The polyurethane joint sealing material can be cured at the room temperature, has higher adhesive strength, good caulking performance and prominent expansion deformation capacity for expansion joints of a concrete structure, can be widely used for sealing of road joints and is especially applicable to sealing of concrete expansion joints of ballastless tracks of expressways.

Provided is an annular hard sealing washer having a bow-shaped longitudinal section. A circular arc portion of the bow-shaped cross-section faces outwards. A sealing line is arranged at the circular arc portion. A line corresponding to a bowstring is parallel to a tube. An annular protruding platform is provided at a position corresponding to a bow grip at the longitudinal section. The sealing washer adopts a circular-arc-shaped line for sealing, opposite to the configuration of a keystone-shaped sealing system. When applied in a flange, the annular sealing washer does not need a positioning platform, nor does the flange need a positioning recess. The annular sealing washer having a bow-shaped longitudinal section is particularly suitable for sealing a flange.

The invention belongs to the field of a mechanical industry. For the purpose of realizing the sealing effect through thread locking forces among parts and a material transformation preload. The invention provides a sealing device used in a liquid environment. The sealing device used in the liquid environment comprises a connection thread, a sealing thread, a delay tube, a centre tube and filler. The sealing and isolation effect can be realized depending on the locking force caused by the threaded connection between the delay tube and the connection thread, and the material transformation preload generated by pressing the centre tube through the treaded tightening of the sealing tread and the connection thread. Therefore, the sealing-limited structure because a larger sealing piece cannot be placed inside a limited space can be effectively overcome. With the adoption of the sealing device provided by the invention, the internal component can be effectively isolated and protected. The sealing device is especially applicable for sealing of an explosion component at the center of a water-based fire extinguishing bomb.