6results about How to "Sealing effect" patented technology

The utility model provides a cap screwing device of a storage container, which relates to the technical field of cap screwing devices of storage containers, and comprises a connecting mechanism, the connecting mechanism comprises a storage barrel, the top of the storage barrel is provided with a top cap, both sides of the storage barrel are provided with fixing blocks, the fixing blocks are fixedly connected with the storage barrel, and the top cap is arranged on the top of the storage barrel. Connecting blocks are arranged on the two sides of the top cover, the connecting blocks are fixedly connected with the top cover, and a mounting block is connected into the fixing block in a sleeved mode. According to the food storage container, through the arrangement of the connecting mechanism, the top cover of the food storage container can be conveniently installed and can be easily taken down, a user does not need to spend much strength, in addition, the sealing performance between the top cover and the storage barrel is not affected, it is guaranteed that food in the storage barrel cannot leak out, and the food storage container is convenient to use. A mounting block is arranged, and a clamping groove matched with the clamping block is formed in the mounting block.

The invention relates to the technical field of valves, and discloses a ball valve which comprises a valve body, a ball body and a sealing structure, the valve body is provided with a valve cavity, a first circulation cavity and a second circulation cavity, the first circulation cavity and the second circulation cavity are communicated with the valve cavity, and the ball body is rotationally arranged in the valve cavity and provided with a through channel; the sealing structure comprises a first valve seat and a second valve seat, the first valve seat is arranged between the valve cavity and the first circulation cavity and abuts against the valve body and the ball body, and the second valve seat is arranged between the valve cavity and the second circulation cavity and abuts against the valve body and the ball body; the ball body has a cleaning state that the ball body penetrates through the channel and communicates with the valve cavity, the first circulation cavity and the second circulation cavity; a communicating groove communicating with the first circulating cavity and the valve cavity is formed in the first valve seat, and when the ball body is in a cleaning state, water flow can flow into the valve cavity through the second circulating cavity and the penetrating channel and is discharged into the first circulating cavity through the communicating groove; according to the ball valve, the cleaning difficulty of the ball valve can be reduced through the communicating part formed in the valve seat, and the cleaning efficiency of the ball valve can be improved.

The utility model relates to bearing end cover technical field, concretely relates to oil leakage type bearing gland assembly, including the outer cover body, the outer wall front end opening department of outer cover body installs the inner cover body, the outer cover body and inner cover body are close to the oil leakage prevention component that sets up, in the utility model, the first rubber seal ring and the second rubber seal ring that set up can replace outer cover body and inner cover body to carry out the abutment with bearing side end, and the first rubber seal ring and the second rubber seal ring all adopt elastic material quality, and also all set up the spring of abutting tightly to make the first rubber seal ring and the second rubber seal ring to abut tightly to bearing side end, and the vibration of bearing can also be buffered by rubber buffer pad and weaken, thereby can avoid the influence that the first rubber seal ring and the second rubber seal ring are connected with bearing tightness caused by vibration, reduce the situation that bearing appears lubricating oil leakage.

The invention discloses a PTC (Positive Temperature Coefficient) heater, relates to the field of electric heating, and solves the problem that the sealing performance of the PTC heater is influenced by thermal expansion. The PTC heater comprises an automobile connecting plate and a PTC heater support, a support fixing assembly is installed at the joint of the automobile connecting plate and the PTC heater support, a PTC heater assembly is arranged on one side of the PTC heater support, an anti-cracking assembly is installed on one side of the PTC heater support, and a water inlet opening and closing assembly is installed on the other side of the PTC heater support. The PTC heater assembly comprises a first metal protection plate and a second metal protection plate, and a PTC heating core is installed between the first metal protection plate and the second metal protection plate. The first metal protection plate and the second metal protection plate are fixed in an auxiliary mode through external mechanical pressing, and thermal expansion of the first metal protection plate and the second metal protection plate is avoided.

This utility model discloses a water-saving valve with dual control switches and high sealing performance, including a valve pipe, a groove, a sealing strip, a sealing plug, and a spring. A valve seat is connected to the middle of the outer surface of the top of the valve pipe. A filter screen is attached to the inner wall of the water inlet end of the valve pipe. Dividing blocks are symmetrically arranged inside the valve pipe below the valve seat. An installation ring is attached to the inner wall of the valve pipe near the water outlet end. This water-saving valve with dual control switches and high sealing performance is equipped with a sealing gasket and a sealing strip. The sealing strip is embedded in the edge of the sealing gasket. When the rotating rod rotates and rises, it causes the sealing gasket and sealing strip to rise simultaneously, thereby causing the sealing strip to engage with the groove. This prevents water from overflowing from the gap between the rotating rod and the center line of the sealing block, improving the overall sealing performance.

This invention relates to the field of oil and gas drilling equipment manufacturing, and discloses a pneumatic expansion packer for oil and gas wells. The packer includes an upper connector, one end of which is fixedly connected to an exhaust / unsealing valve. A central tube is fixedly connected to the end of the exhaust / unsealing valve away from the upper connector. An expansion cylinder is slidably connected to the inner wall of the central tube. A sealing cylinder is fixedly connected to the end of the expansion cylinder away from the central tube. An installation mechanism includes a mounting pad, which is fixedly connected to the inner wall of the expansion cylinder. A connecting frame is fixedly connected to the top of the mounting pad. By setting up this installation mechanism, when the expansion cylinder is subjected to impact force from tubing vibration, the impact force is transmitted through a friction wheel to a silicone compression cylinder. The compression cylinder initially buffers the vibration through its own elastic expansion and contraction. Then, a buffer rod transmits the remaining pressure to a rubber bladder inside the buffer box. The rubber bladder completely absorbs the vibration pressure, achieving a two-stage flexible buffering of the vibration impact force, thus completely avoiding plastic deformation of the expansion cylinder caused by vibration.