Three-way cock type valve

Abstract

The invention provides a three-way cock type valve which comprises a valve body, an oil spraying box and a lubricating mechanism, the top of the valve body is sunken downwards to form a quick release groove, a quick release block is arranged in the quick release groove, and a second rod hole is formed in the center of the quick release block in a penetrating mode. By arranging the first rod hole and the second rod hole, the friction force between the valve rod and the inner side of the second rod hole can be reduced, manual rotation of the valve rod can be achieved without the help of external instruments, more labor is saved during rotation of the valve rod, and by arranging a pressurizing plate, an oil outlet pipe, an outer wrapping frame, a sponge ring and an oil guide device, lubricating oil can be sprayed into the oil guide pipe through the oil outlet pipe by pressing a pressing plate downwards; lubricating oil is sprayed into the sponge ring through the multiple sets of oil outlet holes, the sponge ring absorbs the lubricating oil and is gradually saturated, and therefore the outer side of the valve rod is lubricated when the valve rod rotates, the anti-rust performance of the valve rod is improved, abrasion of the valve rod is reduced, and the service life of the valve rod is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a three-way cock valve. Background Art

[0002] The three-way plug valve is a valve that uses a rotating valve body to control the flow direction of the fluid, and is usually used in multi-pipe systems. Its structure includes a valve body with three connection ports, and the inlet and outlet paths of the fluid can be selected by rotating the valve stem. The three-way plug valve is commonly found in industries such as petroleum, chemical industry and water treatment, and is popular because of its simple operation and good sealing performance. Although the existing three-way plug valve has many advantages, it also has some disadvantages. First, the valve stem is prone to rust and wear after long-term use, especially in an environment with high humidity, the wear and corrosion of the valve stem are aggravated, which will cause damage to the valve stem in the long run and affect the normal use of the valve. Secondly, the three-way plug valve is greatly impacted by the water flow during use, resulting in a large resistance to the opening and closing of the valve rotation, which is inconvenient to use. The conventional response method is to first use more wear-resistant and corrosion-resistant materials to manufacture the valve stem to ensure its corrosion resistance and wear resistance to extend its service life, and then use external instruments to rotate the valve stem. However, the disadvantage of these methods is that improving material selection may increase production costs and affect the market competitiveness of the product. Secondly, using an external device to rotate the valve will make the use of the valve complicated and difficult to operate, so a new structure is proposed to solve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a three-way plug valve to solve the problems raised in the above-mentioned background technology.

[0004] The present invention is implemented by the following technical scheme: a three-way cock valve, comprising: a valve body, an oil spray box and a lubrication mechanism, the top of the valve body is recessed downward to form a quick-release groove, a quick-release block is arranged inside the quick-release groove, and a rod hole 2 is penetrated at the center of the quick-release block;

[0005] The inner side of the second rod hole is provided with three sets of sliding grooves from top to bottom, and a plurality of sets of universal balls are embedded in the sliding grooves. The left and right sides of the valve body have the same specifications. An oil spray box is provided on the right side of the valve body, a boost box is provided above the oil spray box, and an oil box is provided below the boost box.

[0006] A pressing plate is provided on the top of the boosting box, a connecting rod is provided below the pressing plate, a boosting plate is provided inside the boosting box, two groups of return springs are provided on the left and right sides of the top of the boosting plate respectively, a lubrication cavity is provided below the quick-release groove, a lubrication mechanism is provided inside the lubrication cavity, and the lubrication mechanism consists of an outer frame, a sponge ring and an oil guide.

[0007] As a preferred embodiment, the internal structures of the front and rear sides of the top of the valve body are completely identical and are arranged in a mirror-symmetrical manner. A locking mechanism is provided below the front side of the top of the valve body, and the locking mechanism consists of a pull rod, a second connecting rod, a locking plate, a baffle and a locking spring.

[0008] An accommodating cavity is opened inside the front side of the top of the valve body, a group of locking springs are respectively provided on the left and right sides of the accommodating cavity, a baffle is provided on the rear side of the locking spring, a locking plate is provided on the rear side of the baffle, and two groups of connecting rods 2 are provided on the left and right sides in front of the baffle, and the front sides of the two groups of connecting rods 2 respectively penetrate the two groups of locking springs and are glued and fixed to the back side of the pull rod.

[0009] As a preferred embodiment, a group of partitions are provided at the bottom of the quick-release groove and the top of the lubrication cavity, a valve stem is provided at the top of the valve body, a turntable is fixed to the top of the valve stem through a fixing mechanism, a rod hole one is provided through the center of the top of the partition, the radius length of the rod hole one is equal to the radius length of the rod hole two, and the radius length of the rod hole two matches the radius length of the valve stem.

[0010] As a preferred embodiment, the radius length of the quick-release slot matches the radius length of the quick-release block, four groups of sliding grooves are equidistantly provided on the inner side of the quick-release slot, four groups of sliding bars are equidistantly provided on the side of the quick-release block, the length, width and height of the sliding bars match the length, width and height of the sliding slot, and a group of handles are respectively provided at the front and rear positions of the top of the quick-release block.

[0011] As a preferred embodiment, the inner side of the second rod hole is connected with the outer side of the sliding groove, the sliding groove is an annular structure, the interval lengths between the three groups of sliding grooves are the same, the width of the sliding groove matches the diameter length of the universal ball, the side of the universal ball close to the valve stem is in contact with the outer side of the valve stem, and the friction between the outer side of the valve stem and the plurality of groups of universal balls is less than the torque of an adult's hand. In actual use, the turntable is held and rotated to drive the valve stem to rotate. When the valve stem rotates, the side surfaces of the valve stem rub against the three groups of sliding balls opened from top to bottom on the inner side of the second rod hole. Several groups of universal ball bearings inside the moving groove roll along the inner side of the corresponding sliding groove under the friction of the valve stem, thereby avoiding direct contact between the outer side of the valve stem and the inner wall of the rod hole 2 through the contact between the outer side of the valve stem and the several groups of universal ball bearings, reducing the contact area, reducing the friction between the valve stem and the inner wall of the rod hole 2, thereby reducing friction loss, and because the friction between the outer side of the valve stem and the several groups of universal ball bearings is smaller than the torque of an adult's hand, the valve stem can be rotated by hand without the aid of external equipment, thereby making the rotation of the valve stem more labor-saving.

[0012] As a preferred embodiment, the bottom of the pressing plate is glued and fixed to the top of a connecting rod, the bottom of the connecting rod penetrates downwardly through the top of the boost box and is connected and fixed to the center of the top of the boost plate, the left and right sides of the top of the boost plate are respectively fixed to the bottom of four groups of return springs, and the tops of the four groups of return springs are respectively fixed to the upper part of the inside of the boost box.

[0013] As a preferred embodiment, the material of the boost plate is rubber, the material of the inner wall of the boost box is stainless steel, and the length and width of the boost plate match the length and width of the boost box and the inner wall;

[0014] A group of connecting holes are provided at the lower part of the boost box and the upper part of the oil box, an oil filling port is provided at the upper front side of the oil box, an oil outlet pipe is provided at the lower part of the side of the oil box close to the valve body, an observation window is provided at the side of the oil box away from the valve body, and tempered glass is provided inside the observation window.

[0015] As a preferred embodiment, the oil outlet pipe passes through the outer frame and the sponge ring on one side close to the lubrication mechanism and is connected to the upper side of the oil guide device. The outer side of the outer frame is glued and fixed to the inner side of the lubrication cavity, and the inner side of the outer frame is glued and fixed to the outer side of the sponge ring. A rod hole three is provided at the center of the top of the sponge ring, and the inner side of the rod hole three is in contact with the outer side of the valve stem.

[0016] As a preferred embodiment, the oil guide is embedded between the sponge ring and the outer frame, the upper and lower parts of the oil guide are exactly the same, and the upper and lower parts of the oil guide are connected through a group of oil guide pipes, and a plurality of groups of oil outlet holes are equidistantly provided on the inner sides of the upper and lower parts of the oil guide. In actual use, the two groups of pressing plates are pressed at the same time, so that the pressing plates drive the connecting rod 1 to move downward, and the boosting plate is driven to move downward inside the boosting box through the connecting rod 1, and at the same time, the boosting plate pulls the four groups of return springs downward, so that the four groups of return springs are stretched and stored, thereby increasing the air pressure inside the boosting box, and then the air pressure inside the oil box is boosted through the connecting hole, and finally the lubricating oil is sprayed into the lubricating oil through the oil outlet pipe. Inside the device, the lubricating oil enters the oil guide along the oil outlet pipe and evenly fills the upper and lower parts of the oil guide along the oil guide pipe. Then the lubricating oil is sprayed out through several groups of oil outlet holes and absorbed by the sponge ring. Pressing the pressing plate once releases the pressure immediately. At this time, the booster plate is pulled upward and reset by four groups of reset springs, and the pressing plate is pushed upward by connecting rod 1 to reset the pressing plate. Then, the two groups of pressing plates are pressed again according to the above steps until the two groups of pressing plates are repeatedly pressed five times respectively. At this time, the sponge ring completely absorbs the lubricating oil and reaches a saturated state. When the valve stem rotates, the sponge ring is wrapped around the outside of the valve stem, thereby lubricating the outside of the valve stem, reducing the wear of the valve stem, and reducing the rust rate of the valve stem.

[0017] After adopting the above technical scheme, the beneficial effects of the present invention are as follows: by arranging the quick-release block, the sliding groove and the universal ball, the universal ball inside the three groups of sliding grooves can contact the outer side of the valve stem, and when the valve stem rotates, several groups of universal ball are driven to roll along the inner side of the sliding groove, thereby reducing the friction between the valve stem and the inner side of the second rod hole, and the valve stem can be manually rotated without the aid of external equipment, making the rotation of the valve stem more labor-saving, and by arranging the boosting plate, the oil outlet pipe, the outer frame, the sponge ring and the oil guide, the connecting rod can be driven to move down by pressing the pressing plate, thereby driving the boosting plate to move downward inside the boosting chamber, thereby increasing the air pressure inside the boosting chamber, and boosting the air pressure inside the oil box through the connecting hole, thereby spraying the lubricating oil into the oil guide pipe through the oil outlet pipe, and spraying the lubricating oil into the sponge ring through several groups of oil outlet holes, and the sponge ring absorbs the lubricating oil and gradually becomes saturated, thereby lubricating the outer side of the valve stem when the valve stem rotates, increasing the rust resistance of the valve stem, reducing the wear of the valve stem, and thus extending the service life of the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 The figure is a schematic diagram of a three-way plug valve of the present invention.

[0020] Figure 2 The present invention is a schematic diagram of the internal structure of a valve body in a three-way plug valve.

[0021] Figure 3 The present invention is a schematic structural diagram of a three-way plug valve with a friction reducing block removed from the middle block.

[0022] Figure 4 The figure is a schematic diagram of the external structure of an oil spray box in a three-way cock valve of the present invention.

[0023] Figure 5 The present invention is a schematic diagram of the internal structure of a booster box and an oil box in a three-way plug valve.

[0024] Figure 6 The present invention is a schematic diagram of the internal structure of a locking mechanism in a three-way plug valve.

[0025] Figure 7 The present invention is a schematic diagram of the positions of a quick-release block, a lubrication mechanism and an oil injection box in a three-way plug valve.

[0026] Figure 8The present invention is a schematic structural diagram of a lubrication mechanism in a three-way plug valve.

[0027] Fig. 9 The present invention is a schematic structural diagram of an oil guide in a three-way plug valve.

[0028] In the figure, 100 is a valve body, 110 is a slide groove, 120 is a partition plate, and 130 is a rod hole 1;

[0029] 200-quick release block, 210-slide bar, 220-rod hole 2, 221-slide groove, 222-universal ball bearing;

[0030] 300-injection box, 310-boosting box, 311-pressing plate, 312-connecting rod 1, 313-boosting plate, 314-return spring, 315-connecting hole, 320-oil box, 321-oil filling port, 322-observation window, 323-oil outlet pipe;

[0031] 400-locking mechanism, 410-pull rod, 411-connecting rod 2, 420-locking plate, 421-baffle, 422-locking spring;

[0032] 500-lubricating mechanism, 510-outer frame, 520-sponge ring, 521-rod hole three, 530-oil guide, 531-oil guide pipe, 532-oil outlet hole. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 9 The present invention provides a technical solution: a three-way cock valve, comprising: a valve body 100, an oil spray box 300 and a lubrication mechanism 500, the top of the valve body 100 is concave downward to form a quick-release groove, a quick-release block 200 is arranged inside the quick-release groove, and a rod hole 220 is provided through the center of the quick-release block 200;

[0035] Three sets of sliding grooves 221 are sequentially opened from top to bottom inside the second rod hole 220, and a plurality of sets of universal balls 222 are embedded in the sliding grooves 221. The left and right sides of the valve body 100 have exactly the same specifications. An oil spray box 300 is arranged on the right side of the valve body 100, a booster box 310 is arranged above the oil spray box 300, and an oil box 320 is arranged below the booster box 310.

[0036] A pressing plate 311 is provided on the top of the boost box 310, a connecting rod 312 is provided below the pressing plate 311, a boost plate 313 is provided inside the boost box 310, two sets of return springs 314 are provided on the left and right sides of the top of the boost plate 313 respectively, a lubrication cavity is provided below the quick release groove, a lubrication mechanism 500 is provided inside the lubrication cavity, and the lubrication mechanism 500 is composed of an outer frame 510, a sponge ring 520 and an oil guide 530.

[0037] See also Figure 1 , Figure 2 and Figure 6 The internal structures of the front and rear sides of the top of the valve body 100 are completely identical and are arranged in a mirror-symmetrical manner. A locking mechanism 400 is provided below the front side of the top of the valve body 100. The locking mechanism 400 is composed of a pull rod 410, a connecting rod 411, a locking plate 420, a baffle 421 and a locking spring 422.

[0038] A accommodating cavity is opened inside the front side of the top of the valve body 100, and a group of locking springs 422 are respectively provided on the left and right sides of the accommodating cavity. A baffle 421 is provided on the rear side of the locking spring 422, and a locking plate 420 is provided on the rear side of the baffle 421. Two groups of connecting rods 411 are provided on the left and right sides in front of the baffle 421. The front sides of the two groups of connecting rods 411 respectively penetrate the two groups of locking springs 422 and are glued and fixed to the back side of the pull rod 410.

[0039] See also Figure 1 and Figure 2 A group of partitions 120 are provided at the bottom of the quick-release groove and the top of the lubrication cavity, a valve stem is provided at the top of the valve body 100, a turntable is fixed to the top of the valve stem through a fixing mechanism, a rod hole 130 is provided through the center of the top of the partition 120, the radius length of the rod hole 130 is equal to the radius length of the rod hole 220, and the radius length of the rod hole 220 matches the radius length of the valve stem.

[0040] See also Figure 2 and Figure 3 The radius length of the quick release groove matches the radius length of the quick release block 200, four groups of slide grooves 110 are equidistantly provided on the inner side of the quick release groove, four groups of slide bars 210 are equidistantly provided on the side of the quick release block 200, the length, width and height of the slide bars 210 match the length, width and height of the slide groove 110, and a group of handles are respectively provided at the front and rear positions of the top of the quick release block 200.

[0041] See also Figure 1 and Figure 3The inner side of the second rod hole 220 is connected with the outer side of the sliding groove 221. The sliding groove 221 is an annular structure. The interval lengths between the three groups of sliding grooves 221 are the same. The width of the sliding groove 221 matches the diameter length of the universal ball 222. The side of the universal ball 222 close to the valve stem contacts the outer side of the valve stem. The friction between the outer side of the valve stem and the plurality of groups of universal ball 222 is less than the torque of an adult's hand. In actual use, the turntable is held and rotated to drive the valve stem to rotate. When the valve stem rotates, the side of the valve stem rubs against the plurality of internal parts of the three groups of sliding grooves 221 opened from top to bottom on the inner side of the second rod hole 220. The plurality of universal ball bearings 222 roll along the inner side of the corresponding sliding groove 221 under the friction of the valve stem, thereby avoiding direct contact between the outer side of the valve stem and the inner wall of the second rod hole 220 through the contact between the outer side of the valve stem and the plurality of universal ball bearings 222, thereby reducing the contact area, reducing the friction between the valve stem and the inner wall of the second rod hole 220, and thus reducing the friction loss. Furthermore, since the friction between the outer side of the valve stem and the plurality of universal ball bearings 222 is smaller than the torque of an adult's hand, the valve stem can be rotated by hand without the aid of external equipment, thereby making the rotation of the valve stem more labor-saving.

[0042] See also Figure 4 and Figure 5 The bottom of the pressing plate 311 is glued and fixed to the top of the connecting rod 312, the bottom of the connecting rod 312 penetrates downwardly through the top of the boost box 310 and is connected and fixed to the center of the top of the boost plate 313, the left and right sides of the top of the boost plate 313 are respectively fixed to the bottom of the four groups of return springs 314, and the tops of the four groups of return springs 314 are respectively fixed to the upper part of the inside of the boost box 310.

[0043] See also Figure 4 and Figure 5 , the material of the boost plate 313 is rubber, the inner wall of the boost box 310 is stainless steel, and the length and width of the boost plate 313 match the length and width of the boost box and the inner wall;

[0044] A group of connecting holes 315 are provided at the lower part of the boost box 310 and the upper part of the oil box 320. An oil filling port 321 is provided at the upper front side of the oil box 320. An oil outlet pipe 323 is provided at the lower part of the side of the oil box 320 close to the valve body 100. An observation window 322 is provided at the side of the oil box 320 away from the valve body 100, and tempered glass is provided inside the observation window 322.

[0045] See also Figures 7 to 9The oil outlet pipe 323 passes through the outer frame 510 and the sponge ring 520 on one side close to the lubrication mechanism 500, and is connected to the upper side of the oil guide device 530. The outer side of the outer frame 510 is glued and fixed to the inner side of the lubrication cavity, and the inner side of the outer frame 510 is glued and fixed to the outer side of the sponge ring 520. A rod hole 3 521 is provided at the center of the top of the sponge ring 520, and the inner side of the rod hole 3 521 contacts the outer side of the valve stem.

[0046] See also Figures 7 to 9 The oil guide 530 is embedded between the sponge ring 520 and the outer frame 510. The upper and lower parts of the oil guide 530 are exactly the same. The upper and lower parts of the oil guide 530 are connected by a group of oil guide pipes 531. A plurality of groups of oil outlet holes 532 are equidistantly provided on the inner sides of the upper and lower parts of the oil guide 530. In actual use, the two groups of pressing plates 311 are pressed at the same time, so that the pressing plates 311 drive the connecting rod 1 312 to move downward, and the boosting plate 313 is driven to move downward inside the boosting box 310 through the connecting rod 1 312. At the same time, the boosting plate 313 pulls the four groups of return springs 314 downward, so that the four groups of return springs 314 are stretched and stored, thereby increasing the air pressure inside the boosting box 310, and then the air pressure inside the oil box 320 is boosted through the connecting hole 315, and finally the lubricating oil is sprayed into the lubrication device through the oil outlet pipe 323 Inside, the lubricating oil enters the oil guide 530 along the oil outlet pipe 323, and evenly fills the upper and lower parts of the oil guide 530 along the oil guide pipe 531, and then the lubricating oil is sprayed out through several groups of oil outlet holes 532 and absorbed by the sponge ring 520. Pressing the pressing plate 311 once immediately releases the pressure, and at this time the booster plate 313 is pulled upward and reset by the four groups of reset springs 314, and the pressing plate 311 is pushed upward through the connecting rod 1 312 to reset the pressing plate 311, and then the two groups of pressing plates 311 are pressed again according to the above steps until the two groups of pressing plates 311 are repeatedly pressed five times respectively. At this time, the sponge ring 520 completely absorbs the lubricating oil and reaches a saturated state. When the valve stem rotates, the sponge ring 520 is wrapped around the outside of the valve stem, thereby lubricating the outside of the valve stem, reducing the wear of the valve stem, and at the same time reducing the rust rate of the valve stem.

[0047] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As an embodiment of the present invention: in actual use, the first person first picks up the quick-release block 200, and sleeves the quick-release block 200 on the outside of the valve stem along the valve stem, so that the valve stem is inserted into the inside of the second rod hole 220, and makes a plurality of groups of universal balls 222 contact the outside of the valve stem on the side close to the valve stem, and then moves the quick-release block 200 downward, so that the quick-release block 200 moves downward along the valve stem to the top of the quick-release groove. At this time, the second person pinches the two groups of pull rods 410 with his hands, and then pulls the pull rods 410 to both sides away from the valve body 100, so that the pull rods 410 drive the baffle plate 421 to squeeze the two groups of locking springs 422 toward the side close to the locking spring 422 through the two groups of connecting rods 411, and makes the two groups of locking springs 422 contract and accumulate force, thereby pulling the locking plate 420 into the accommodating cavity through the baffle plate 421. The two sets of pull rods 410 are held still, and then the first person fine-tunes the quick-release block 200 so that the bottoms of the four sets of slide bars 210 are aligned with the tops of the four sets of slide grooves 110 and inserted downward, so that the quick-release block 200 is inserted into the quick-release groove. Then the second person releases the two sets of pull rods 410, so that the locking spring 422 stretches naturally and pushes the baffle plate 421 in the direction close to the quick-release block 200, thereby pushing the locking plate 420 through the baffle plate 421 to move the locking plate 420 to the top of the quick-release block 200, and then the quick-release block 200 is limited in the quick-release groove through the two sets of locking plates 420, and then the turntable is installed on the top of the valve stem through the fixing mechanism. The final effect is to facilitate the installation and removal of the quick-release block 200 and to facilitate maintenance.

[0048] See also Figure 1 and Figure 3 As another embodiment of the present invention: Based on the further elaboration of the above embodiment, after the quick-release block 200 is installed, the valve body 100 can be used normally, and the turntable can be held and rotated to drive the valve stem to rotate. When the valve stem rotates, the side surface of the valve stem rubs against the several groups of universal balls 222 inside the three groups of sliding grooves 221 opened from top to bottom on the inner side of the second rod hole 220. Under the friction of the valve stem, the universal balls 222 roll along the inner side of the corresponding sliding grooves 221, thereby avoiding the direct contact between the outer side of the valve stem and the inner wall of the second rod hole 220 through the contact between the outer side of the valve stem and the several groups of universal balls 222, thereby reducing the contact area, reducing the friction between the valve stem and the inner wall of the second rod hole 220, and thus reducing the friction loss. Moreover, since the friction between the outer side of the valve stem and the several groups of universal balls 222 is less than the torque of an adult's hand, the valve stem can be rotated by hand without the aid of an external instrument, thereby making the rotation of the valve stem more labor-saving and convenient to use.

[0049] See also Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 As the third embodiment of the present invention: Based on the further elaboration of the above embodiment, when the valve body 100 is used, the oil spraying operation can be performed on the lubricating mechanism 500 through the oil spraying box 300, so that the sponge ring 520 inside the oil spraying mechanism absorbs the lubricating oil and reaches a saturated state (it is known that the time interval from the sponge ring 520 being completely saturated with oil to being completely dry is 10 days, and it is known that the pressing plate 311 needs to be pressed ten times from the sponge ring 520 being completely dry to being saturated with oil). It is known by calculation that the sponge ring 520 has been refueled for 10 days since the last time it was refueled. In the past ten days, at this time, the two sets of pressing plates 311 can be pressed at the same time, so that the pressing plates 311 drive the connecting rod 1 312 to move downward, and the boosting plate 313 is driven to move downward inside the boosting box 310 through the connecting rod 1 312. At the same time, the boosting plate 313 pulls the four sets of return springs 314 downward, so that the four sets of return springs 314 are stretched and stored, thereby increasing the air pressure inside the boosting box 310, and then the air pressure inside the oil box 320 is increased through the connecting hole 315, and finally the lubricating oil is sprayed into the lubrication device through the oil outlet pipe 323;

[0050] The lubricating oil enters the oil guide 530 along the oil outlet pipe 323, and evenly fills the upper and lower parts of the oil guide 530 along the oil guide pipe 531. Then, the lubricating oil is sprayed out through the plurality of oil outlet holes 532 and absorbed by the sponge ring 520. The pressure is immediately released by pressing the pressing plate 311 once. At this time, the booster plate 313 is pulled upward and reset by the four sets of reset springs 314, and the pressing plate 311 is pushed upward by the connecting rod 1 312 to reset the pressing plate 311. Then, the two sets of pressing plates 311 are pressed again according to the above steps until the two sets of pressing plates 311 are pressed repeatedly five times respectively. At this time, the sponge ring 520 completely absorbs the pressure. The lubricating oil reaches a saturated state. When the valve stem rotates, the sponge ring 520 is wrapped around the outside of the valve stem, thereby lubricating the outside of the valve stem, reducing the wear of the valve stem and the rust rate of the valve stem. Since the sponge ring 520 is always in contact with the valve stem, the sponge ring 520 always lubricates the outside of the valve stem. The remaining lubricating oil in the oil box 320 is observed through the observation window 322, and then the lubricating oil is injected into the oil box 320 through the oil filling port 321 as needed for the next use. The final effect is to reduce the rust rate of the valve stem, reduce the wear rate of the valve stem, and extend the service life of the valve stem.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-way plug valve, comprising: A valve body (100), an oil spray box (300) and a lubricating mechanism (500), characterized in that: the top of the valve body (100) is recessed downward to form a quick-release groove, a quick-release block (200) is provided inside the quick-release groove, and a second rod hole (220) is provided through the center of the quick-release block (200); The inner side of the second rod hole (220) is provided with three groups of sliding grooves (221) from top to bottom, and a plurality of groups of universal balls (222) are embedded and installed inside the sliding grooves (221). The left and right sides of the valve body (100) have completely the same specifications. An oil spray box (300) is provided on the right side of the valve body (100), a pressurizing box (310) is provided above the oil spray box (300), and an oil box (320) is provided below the pressurizing box (310); A pressing plate (311) is provided on the top of the boost box (310), a connecting rod (312) is provided below the pressing plate (311), a boost plate (313) is provided inside the boost box (310), two groups of return springs (314) are provided on the left and right sides of the top of the boost plate (313), a lubrication cavity is provided below the quick-release groove, a lubrication mechanism (500) is provided inside the lubrication cavity, and the lubrication mechanism (500) is composed of an outer frame (510), a sponge ring (520) and an oil guide (530).

2. A three-way plug valve according to claim 1, characterized in that: The internal structures of the front and rear sides of the top of the valve body (100) are completely identical and are arranged in a mirror-symmetrical manner. A locking mechanism (400) is provided below the front side of the top of the valve body (100). The locking mechanism (400) is composed of a pull rod (410), a second connecting rod (411), a locking plate (420), a baffle (421) and a locking spring (422); A accommodating cavity is provided inside the front top side of the valve body (100), and a group of locking springs (422) are provided on the left and right sides of the accommodating cavity respectively. A baffle (421) is provided on the rear side of the locking spring (422), and a locking plate (420) is provided on the rear side of the baffle (421). Two groups of connecting rods (411) are provided on the left and right sides in front of the baffle (421), and the front sides of the two groups of connecting rods (411) respectively penetrate the two groups of locking springs (422) and are glued and fixed to the back side of the pull rod (410).

3. A three-way plug valve according to claim 1, characterized in that: A group of partitions (120) are provided at the bottom of the quick-release groove and the top of the lubrication cavity, a valve stem is provided at the top of the valve body (100), a rotating disk is fixed to the top of the valve stem through a fixing mechanism, a rod hole 1 (130) is provided through the center of the top of the partition (120), the radius length of the rod hole 1 (130) is equal to the radius length of the rod hole 2 (220), and the radius length of the rod hole 2 (220) matches the radius length of the valve stem.

4. A three-way plug valve as claimed in claim 3, characterized in that: The radius length of the quick release groove matches the radius length of the quick release block (200); four groups of slide grooves (110) are equidistantly provided inside the quick release groove; four groups of slide bars (210) are equidistantly provided on the side of the quick release block (200); the length, width and height of the slide bars (210) match the length, width and height of the slide grooves (110); and a group of handles are respectively provided at the front and rear positions of the top of the quick release block (200).

5. A three-way plug valve as claimed in claim 4, characterized in that: The inner side of the second rod hole (220) is connected to the outer side of the sliding groove (221); the sliding groove (221) is an annular structure; the interval lengths between the three groups of sliding grooves (221) are the same; the width of the sliding groove (221) matches the diameter length of the universal ball (222); the side of the universal ball (222) close to the valve stem contacts the outer side of the valve stem.

6. A three-way plug valve according to claim 1, characterized in that: The bottom of the pressing plate (311) is glued and fixed to the top of the connecting rod (312), the bottom of the connecting rod (312) penetrates downward through the top of the boosting box (310) and is connected and fixed to the center of the top of the boosting plate (313), the left and right sides of the top of the boosting plate (313) are respectively fixed to the bottom of four groups of return springs (314), and the tops of the four groups of return springs (314) are respectively fixed to the upper part of the inside of the boosting box (310).

7. A three-way plug valve according to claim 6, characterized in that: The material of the boost plate (313) is rubber, the inner wall of the boost box (310) is stainless steel, and the length and width of the boost plate (313) match the length and width of the boost box and the inner wall; A group of communicating holes (315) are provided at the lower part of the interior of the boost box (310) and at the upper part of the interior of the oil box (320); an oil filling port (321) is provided at the upper part of the front side of the oil box (320); an oil outlet pipe (323) is provided at the lower part of the side of the oil box (320) close to the valve body (100); an observation window (322) is provided at the side of the oil box (320) away from the valve body (100); and tempered glass is provided inside the observation window (322).

8. A three-way plug valve according to claim 7, characterized in that: The oil outlet pipe (323) passes through the outer frame (510) and the sponge ring (520) on one side close to the lubrication mechanism (500), and is connected to the upper side of the oil guide (530). The outer side of the outer frame (510) is glued and fixed to the inner side of the lubrication cavity. The inner side of the outer frame (510) is glued and fixed to the outer side of the sponge ring (520). A rod hole three (521) is provided at the center of the top of the sponge ring (520). The inner side of the rod hole three (521) contacts the outer side of the valve stem.

9. A three-way plug valve as claimed in claim 8, characterized in that: The oil guide (530) is embedded between the sponge ring (520) and the outer frame (510); the upper and lower parts of the oil guide (530) are completely identical; the upper and lower parts of the oil guide (530) are connected through a group of oil guide pipes (531); and a plurality of groups of oil outlet holes (532) are equidistantly provided on the inner sides of the upper and lower parts of the oil guide (530).

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