Pneumatic gate valve

Abstract

The utility model relates to the technical field of valves, in particular to a pneumatic gate valve which comprises a valve body and a valve rod, a pneumatic actuator is installed on the surface of the valve body, a valve plate is connected to the surface of the valve body in a sliding mode, the valve plate is connected with the arc face of the valve rod in a sliding mode, a lubricating device is arranged on the surface of the valve plate, and the lubricating device comprises a U-shaped plate. The U-shaped plate is fixedly connected with the valve plate, a circular plate is fixedly connected to the surface of the U-shaped plate, a sponge block is detachably installed on the inner wall of the circular plate and slidably connected with the arc face of the valve rod, the arc face of the circular plate communicates with a transparent soft oil pipe, and an oil box is fixedly connected to the surface of the valve plate. And one end of the transparent soft oil pipe is communicated with the oil box. The utility model solves the problems that dust is easily attached to the surface of the valve rod because the valve rod is exposed outside for a long time, the abrasion of the valve rod is easily increased after the valve rod is used for a long time, and the operation smoothness and the service life of the valve rod are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pneumatic gate valve. Background Art

[0002] Pneumatic gate valve is a device that controls the opening and closing of knife gate valve through pneumatic device. It is usually composed of pneumatic actuator, gate plate and valve body. Pneumatic gate valve controls the action of pneumatic actuator through air source pressure, so that the knife plate opens or closes inside the valve body, thereby realizing flow control of the medium.

[0003] The above-mentioned and existing related technologies often have the following defects: when using a pneumatic gate valve, the valve plate will slide on the arc surface of the valve stem. Since the valve stem is exposed to the outside for a long time, dust will easily adhere to the surface of the valve stem. Long-term use will easily lead to increased wear of the valve stem, affecting the smoothness of the operation and service life of the valve stem, thereby reducing the usability of the pneumatic gate valve.

[0004] Therefore, the utility model provides a pneumatic gate valve. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art that the valve stem is exposed to the outside for a long time, so dust is easily attached to the surface of the valve stem, and long-term use may easily lead to increased wear of the valve stem, affecting the smoothness of operation and service life of the valve stem, and proposes a pneumatic gate valve.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic gate valve, comprising a valve body and a valve stem, a pneumatic actuator is installed on the surface of the valve body, a valve plate is slidably connected to the surface of the valve body, the valve plate is slidably connected to the circular surface of the valve stem, a lubrication device is provided on the surface of the valve plate, and its characteristic is that the lubrication device comprises a U-shaped plate, the U-shaped plate is fixedly connected to the valve plate, a circular plate is fixedly connected to the surface of the U-shaped plate, a sponge block is detachably installed on the inner wall of the circular plate, the sponge block is slidably connected to the circular surface of the valve stem, a transparent soft oil pipe is connected to the circular surface of the circular plate, an oil box is fixedly connected to the surface of the valve plate, one end of the transparent soft oil pipe is connected to the oil box, an oil cover is threadedly connected to the surface of the oil box, and an acrylic plate is fixedly connected to the surface of the oil box.

[0007] The effect achieved by the above components is: by applying lubricating oil to the valve stem, the wear of the valve stem caused by long-term use of the pneumatic gate valve can be avoided. The lubricating oil can provide anti-corrosion and anti-oxidation protection for the valve stem, prevent the surface of the valve stem from corrosion and oxidation, reduce the degree of wear of the valve stem, and improve the transmission efficiency of the valve stem.

[0008] Preferably, the surface of the U-shaped plate is slidably connected to an L-plate, the short arm of the L-plate is fixedly connected to a pointed cone, the pointed cone is slidably connected to the sponge block, the surface of the U-shaped plate is threadedly connected to a first screw, and the first screw is threadedly connected to the long arm of the L-plate.

[0009] The effect achieved by the above components is: the pointed cone can fix the position of the sponge, and the first screw is rotated so that the first screw can fix the L-plate, thereby fixing the position of the pointed cone, making it convenient for staff to quickly disassemble the sponge block.

[0010] Preferably, a T-shaped plate is fixedly connected to the inner wall of the oil box relative to one side of the transparent soft oil pipe, a T-shaped block is slidably connected to the inner wall of the T-shaped plate, a round rod is fixedly connected to the surface of the T-shaped block, the round rod is slidably connected to the oil box, a fixed plate is fixedly connected to the surface of the oil box, a second screw is threadedly connected to the arc surface of the round rod, and the second screw rests on the surface of the fixed plate.

[0011] The effects achieved by the above components are: the second screw can limit the positions of the round rod and the T-shaped block, thereby controlling the amount of lubricating oil flowing in, thereby reducing the waste of lubricating oil to a certain extent.

[0012] Preferably, a sealing ring is fixedly connected to the surface of the oil box, and the inner wall of the sealing ring is slidably connected to the arc surface of the round rod.

[0013] The effect achieved by the above components is that the round rod slides along the inner wall of the sealing ring, and the sealing ring can seal the hole opened in the oil box to prevent the round rod from moving back and forth and causing leakage of lubricating oil.

[0014] Preferably, a supporting device is provided on the surface of the valve body, and the supporting device includes two telescopic rods, both of which are rotatably connected to the valve body, one end of each of the telescopic rods is rotatably connected to a support plate, and the arc surfaces of the two telescopic rods are fixedly connected to pull rings, and two limit rods are fixedly connected to the surface of the valve body, both of which are clamped with the pull rings, the limit rods are matched in size to the pull rings, and the arc surfaces of the telescopic rods are threadedly connected to bolts.

[0015] The effect achieved by the above components is: by setting up a supporting device, the pneumatic gate valve can be supported to avoid the situation where the workers are difficult to connect the pipes due to the high adaptability. By utilizing the cooperation between the telescopic rod and the bolt, pipes of different heights can be connected, thereby improving the usability of the pneumatic gate valve.

[0016] Preferably, an anti-skid pad is glued to the lower surface of the support plate, and the anti-skid pad is made of rubber.

[0017] The effect achieved by the above components is: the anti-skid pad contacts the ground, and the anti-skid pad increases the friction between the support plate and the ground, thereby avoiding shaking when supporting the pneumatic gate valve.

[0018] Preferably, a magnet is fixedly connected to the surface of the support plate, and a magnetic sheet is fixedly connected to the arc surface of the telescopic rod.

[0019] The effects achieved by the above components are: the magnet contacts the magnetic sheet, and the magnetic sheet and the magnet can limit the position of the support plate, thereby facilitating the collection of the support plate and preventing the support plate from shaking.

[0020] In summary:

[0021] 1. In the utility model, lubricating oil is applied to the valve stem to avoid wear of the valve stem caused by long-term use of the pneumatic gate valve. The lubricating oil can provide anti-corrosion and anti-oxidation protection for the valve stem, prevent the surface of the valve stem from being affected by corrosion and oxidation, thereby keeping the valve stem in good condition and extending its service life. A lubrication device is provided to lubricate the surface of the valve stem, avoid the valve stem being exposed to dust attached to the outside for a long time and affecting the sliding of the valve plate, reduce the wear of the valve stem, improve the transmission efficiency of the valve stem, and further improve the practicability of the pneumatic gate valve.

[0022] 2. In the utility model, by providing a supporting device, the pneumatic gate valve can be supported, so that the workers can avoid the situation where it is difficult to connect the pipes due to the high adaptability. By utilizing the cooperation between the telescopic rod and the bolt, pipes of different heights can be connected, thereby improving the usability of the pneumatic gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a partial structural schematic diagram of the pneumatic actuator of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the lubrication device of the utility model;

[0026] Figure 4 For this utility model Figure 3 A schematic diagram of the structure from another angle;

[0027] Figure 5 It is a structural schematic diagram of the pointed cone of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the T-shaped block of the utility model;

[0029] Figure 7This is a schematic diagram of the structure of the support device of the utility model;

[0030] Figure 8 For this utility model Figure 7 Schematic diagram of the structure from another angle.

[0031] Legend: 1. Pneumatic actuator; 2. Valve body; 3. Valve plate; 4. Valve stem; 5. Lubricating device; 501. U-shaped plate; 502. Round plate; 503. Sponge block; 504. Transparent soft oil pipe; 505. Oil box; 506. Oil cover; 507. Acrylic plate; 508. First screw; 509. L-plate; 510. Cone; 511. T-shaped plate; 512. T-shaped block; 513. Round rod; 514. Sealing ring; 515. Fixed plate; 516. Second screw; 6. Support device; 61. Telescopic rod; 62. Bolt; 63. Support plate; 64. Limit rod; 65. Pull ring; 66. Magnet; 67. Magnetic sheet; 68. Anti-slip pad. DETAILED DESCRIPTION

[0032] Reference Figure 1 As shown, the utility model provides a technical solution: a pneumatic gate valve, including a valve body 2 and a valve stem 4, a pneumatic actuator 1 is installed on the surface of the valve body 2, a valve plate 3 is slidably connected to the surface of the valve body 2, the valve plate 3 is slidably connected to the arc surface of the valve stem 4, a lubrication device 5 is provided on the surface of the valve plate 3, and a supporting device 6 is provided on the surface of the valve body 2.

[0033] The specific arrangement and function of the lubricating device 5 and the supporting device 6 will be described in detail below.

[0034] Reference Figure 2 — Figure 6As shown, in this embodiment: the lubricating device 5 includes a U-shaped plate 501, the U-shaped plate 501 is fixedly connected to the valve plate 3, a circular plate 502 is fixedly connected to the surface of the U-shaped plate 501, a sponge block 503 is detachably mounted on the inner wall of the circular plate 502, the sponge block 503 is slidably connected to the arc surface of the valve stem 4, a transparent soft oil pipe 504 is connected to the arc surface of the circular plate 502, an oil box 505 is fixedly connected to the surface of the valve plate 3, one end of the transparent soft oil pipe 504 is connected to the oil box 505, and an oil cap 505 is threadedly connected to the surface of the oil box 505 6. The surface of the oil box 505 is fixedly connected with an acrylic plate 507, the surface of the U-shaped plate 501 is slidably connected with an L-plate 509, the short arm of the L-plate 509 is fixedly connected with a pointed cone 510, the pointed cone 510 is slidably connected with the sponge block 503, the surface of the U-shaped plate 501 is threadedly connected with a first screw 508, the first screw 508 is threadedly connected with the long arm of the L-plate 509, the pointed cone 510 can fix the position of the sponge, and the first screw 508 is rotated to fix the L-plate 509, thereby The position of the pointed cone 510 is fixed, so that the staff can quickly disassemble the sponge block 503. The inner wall of the oil box 505 is fixedly connected with a T-shaped plate 511 relative to one side of the transparent soft oil pipe 504. The inner wall of the T-shaped plate 511 is slidably connected with a T-shaped block 512. The surface of the T-shaped block 512 is fixedly connected with a round rod 513. The round rod 513 is slidably connected to the oil box 505. The surface of the oil box 505 is fixedly connected with a fixing plate 515. The arc surface of the round rod 513 is threadedly connected with a second screw 516. The second screw 516 abuts against the fixed The surface of the fixed plate 515 and the second screw 516 can limit the positions of the round rod 513 and the T-shaped block 512, so as to control the amount of lubricating oil flowing in and reduce the waste of lubricating oil to a certain extent. The surface of the oil box 505 is fixedly connected with a sealing ring 514, and the inner wall of the sealing ring 514 is slidably connected with the arc surface of the round rod 513. The round rod 513 will slide along the inner wall of the sealing ring 514. The sealing ring 514 can seal the holes opened in the oil box 505 to prevent the round rod 513 from moving back and forth and causing the lubricating oil to leak out.

[0035] Reference Figure 7 and Figure 8As shown, specifically, the support device 6 includes two telescopic rods 61, the two telescopic rods 61 are rotatably connected to the valve body 2, one end of the two telescopic rods 61 is rotatably connected to a support plate 63, the arc surfaces of the two telescopic rods 61 are fixedly connected to a pull ring 65, the surface of the valve body 2 is fixedly connected to two limit rods 64, the two limit rods 64 are clamped with the pull ring 65, the size of the limit rod 64 and the pull ring 65 are adapted, the arc surface of the telescopic rod 61 is threadedly connected to a bolt 62, and the lower surface of the support plate 63 is glued with an anti-slip pad 6 8. The anti-skid pad 68 is made of rubber and is in contact with the ground. The anti-skid pad 68 increases the friction between the support plate 63 and the ground to avoid shaking when supporting the pneumatic gate valve. A magnet 66 is fixedly connected to the surface of the support plate 63, and a magnetic sheet 67 is fixedly connected to the arc surface of the telescopic rod 61. The magnet 66 is in contact with the magnetic sheet 67. The magnetic sheet 67 and the magnet 66 can limit the position of the support plate 63, thereby facilitating the collection of the support plate 63 and avoiding shaking of the support plate 63.

[0036] Working principle: when the pneumatic actuator 1 needs to be started to open or close the valve body 2, the pneumatic actuator 1 will drive the valve plate 3 to move along the arc surface of the valve stem 4, and the valve plate 3 will slide along the inner wall of the valve body 2, so as to close and open the valve body 2. During the sliding process of the valve plate 3, the valve stem 4 needs to be lubricated. First, the second screw 516 is rotated to separate the second screw 516 from the surface of the fixed plate 515, and then the round rod 513 is pulled away from the sealing ring 514. The round rod 513 will slide along the inner wall of the sealing ring 514. The sealing ring 514 can seal the hole opened in the oil box 505 to prevent the round rod 513 from moving back and forth and causing the lubricating oil to leak out. One end of the round rod 513 will drive the T-shaped block 512 to move, so that the T-shaped block 512 is separated from the T-shaped plate 511. The inner wall of the oil box 505, at this time, the lubricating oil in the oil box 505 will flow into the transparent soft oil pipe 504, at this time, the size of the lubricating oil outflow can be observed through the transparent soft oil pipe 504, when the amount of lubricating oil outflowing is adjusted, the second screw 516 is turned again, and the second screw 516 moves downward with the help of the thread in the round rod 513 until the second screw 516 is tightly fitted on the surface of the fixed plate 515, the second screw 516 can limit the position of the round rod 513 and the T-shaped block 512, so as to control the amount of lubricating oil flowing in, to reduce the waste of lubricating oil to a certain extent, the lubricating oil in the transparent soft oil pipe 504 will flow into the circular plate 502, because the sponge block 503 has adsorption, the sponge block 503 will absorb the lubricating oil, and the sponge block 503 can evenly distribute the oil Apply it on the arc surface of the valve stem 4, then start the pneumatic actuator 1, the pneumatic actuator 1 will drive the valve plate 3 to move along the arc surface of the valve stem 4, the valve plate 3 will drive the U-shaped plate 501 to move, the movement of the U-shaped plate 501 will drive the sponge block 503 to slide along the arc surface of the valve stem 4, so as to lubricate the valve stem 4. When the sponge needs to be replaced, turn the first screw 508 to make the first screw 508 fall off and contact with the long arm of the L plate 509, then pull the L plate 509, the L plate 509 slides along the surface of the U-shaped frame, the L plate 509 will drive the pointed cone 510 to slide along the inner wall of the sponge block 503, and then make one end of the pointed cone 510 fall off and contact with the sponge block 503. At this time, the disassembly of the sponge block 503 is completed, and then the new sponge block 503 is installed along the circular plate 502 The inner wall of the oil box 505 is slidably installed, and then the L plate 509 and the pointed cone 510 are respectively inserted into the U-shaped plate 501 and the sponge block 503. The pointed cone 510 can fix the position of the sponge, and then the first screw 508 is rotated again. The first screw 508 fixes the L plate 509 with the help of the threads between the U-shaped plate 501 and the long arm of the L plate 509, thereby fixing the position of the pointed cone 510. The surface of the oil box 505 is installed with an acrylic plate 507. The acrylic plate 507 has the characteristic of being transparent. Therefore, by observing the acrylic plate 507, it is convenient to observe the amount of oil in the oil box 505. When it is necessary to inject lubricating oil, the oil cover 506 is rotated, the oil cover 506 is removed, and then the lubricating oil is injected through the oil port. Then, the oil cover 506 is used to seal the oil port with the help of threads.By applying lubricating oil to the valve stem 4, the wear of the valve stem 4 caused by long-term use of the pneumatic gate valve can be avoided. The lubricating oil can provide anti-corrosion and anti-oxidation protection for the valve stem 4, prevent the surface of the valve stem 4 from being affected by corrosion and oxidation, thereby maintaining the valve stem 4 in good condition and extending its service life. The lubricating device 5 is provided to lubricate the surface of the valve stem 4, avoid the valve stem 4 being exposed to dust attached to the outside for a long time and affecting the sliding of the valve plate 3, reduce the wear of the valve stem 4, improve the transmission efficiency of the valve stem 4, and further improve the usability of the pneumatic gate valve.

[0037] When the pneumatic gate valve is in use, it needs to be connected to the pipeline, so the supporting device 6 is required. First, pinch the pull ring 65 and slide upward along the arc surface of the limit rod 64, so that the pull ring 65 and the limit rod 64 fall off and contact, and the cooperation between the pull ring 65 and the limit rod 64 is used to limit the position of the telescopic rod 61, so that it is convenient for the staff to collect the telescopic rod 61, and then rotate the support plate 63, the support plate 63 will drive the magnet 66 to fall off and contact with the magnetic sheet 67, the magnetic sheet 67 and the magnet 66 can limit the position of the support plate 63, and then rotate the telescopic rod 61, the telescopic rod 61 will drive the support plate 63 and the anti-slip pad 68 is driven to make the anti-skid pad 68 contact the ground. The anti-skid pad 68 increases the friction between the support plate 63 and the ground to avoid shaking when supporting the pneumatic gate valve. Then the bolt 62 is turned. At this time, the height of the pneumatic gate valve can be adjusted by the telescopic rod 61, which is convenient for the staff to connect the pipeline. By setting the supporting device 6, the pneumatic gate valve can be supported to avoid the situation that the staff is difficult to connect the pipeline due to the high adaptability. The cooperation between the telescopic rod 61 and the bolt 62 can be used to connect pipelines of different heights, thereby improving the usability of the pneumatic gate valve.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A pneumatic gate valve, comprising a valve body (2) and a valve stem (4), wherein a pneumatic actuator (1) is mounted on the surface of the valve body (2), a valve plate (3) is slidably connected to the surface of the valve body (2), the valve plate (3) is slidably connected to the arc surface of the valve stem (4), a lubrication device (5) is provided on the surface of the valve plate (3), and the valve valve is characterized in that: The lubricating device (5) comprises a U-shaped plate (501), wherein the U-shaped plate (501) is fixedly connected to the valve plate (3), a circular plate (502) is fixedly connected to the surface of the U-shaped plate (501), a sponge block (503) is detachably mounted on the inner wall of the circular plate (502), the sponge block (503) is slidably connected to the circular arc surface of the valve stem (4), a transparent soft oil pipe (504) is connected to the circular arc surface of the circular plate (502), an oil box (505) is fixedly connected to the surface of the valve plate (3), one end of the transparent soft oil pipe (504) is connected to the oil box (505), an oil cover (506) is threadedly connected to the surface of the oil box (505), and an acrylic plate (507) is fixedly connected to the surface of the oil box (505).

2. A pneumatic gate valve according to claim 1, characterized in that: The surface of the U-shaped plate (501) is slidably connected to an L-plate (509), the short arm of the L-plate (509) is fixedly connected to a pointed cone (510), the pointed cone (510) is slidably connected to the sponge block (503), the surface of the U-shaped plate (501) is threadedly connected to a first screw rod (508), and the first screw rod (508) is threadedly connected to the long arm of the L-plate (509).

3. A pneumatic gate valve according to claim 1, characterized in that: A T-shaped plate (511) is fixedly connected to the inner wall of the oil box (505) on one side relative to the transparent soft oil pipe (504); a T-shaped block (512) is slidably connected to the inner wall of the T-shaped plate (511); a round rod (513) is fixedly connected to the surface of the T-shaped block (512); the round rod (513) is slidably connected to the oil box (505); a fixed plate (515) is fixedly connected to the surface of the oil box (505); a second screw rod (516) is threadedly connected to the arc surface of the round rod (513); the second screw rod (516) abuts against the surface of the fixed plate (515).

4. A pneumatic gate valve according to claim 3, characterized in that: A sealing ring (514) is fixedly connected to the surface of the oil box (505), and the inner wall of the sealing ring (514) is slidably connected to the arc surface of the round rod (513).

5. The pneumatic gate valve according to claim 1, characterized in that: The surface of the valve body (2) is provided with a supporting device (6), and the supporting device (6) comprises two telescopic rods (61), and the two telescopic rods (61) are both rotatably connected to the valve body (2), and one end of the two telescopic rods (61) is rotatably connected to a supporting plate (63), and the arc surfaces of the two telescopic rods (61) are fixedly connected to a pull ring (65), and the surface of the valve body (2) is fixedly connected with two limit rods (64), and the two limit rods (64) are both snap-fitted with the pull ring (65), and the sizes of the limit rods (64) and the pull ring (65) are adapted, and the arc surfaces of the telescopic rods (61) are threadedly connected to bolts (62).

6. A pneumatic gate valve according to claim 5, characterized in that: The lower surface of the support plate (63) is glued with an anti-skid pad (68), and the anti-skid pad (68) is made of rubber.

7. The pneumatic gate valve according to claim 5, characterized in that: A magnet (66) is fixedly connected to the surface of the support plate (63), and a magnetic sheet (67) is fixedly connected to the arc surface of the telescopic rod (61).

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