Piston type swing check valve

Abstract

The utility model relates to the technical field of check valves, in particular to a piston type swing check valve which comprises a main pipe, auxiliary pipes and a sealing device, the auxiliary pipes are installed on the surfaces of the two ends of the main pipe, a top cover is installed at the top end of the main pipe, the sealing device is arranged on the surface of the main pipe and comprises a threaded rod, and the threaded rod is rotationally connected with the inner surface of the main pipe. The surface of the threaded rod is in threaded connection with a sliding plate which is in sliding connection with the surface of the main pipe, the bottom end of the sliding plate is fixedly connected with a blocking block which is inserted into the inner surface of the auxiliary pipe, and one end of the threaded rod is fixedly connected with an auxiliary wheel. According to the check valve, by arranging the sealing device, a worker can effectively and conveniently adjust the check valve, when the check valve is used, the sealing device is adjusted, the pull rope is prevented from being soaked in water for a long time, the practicability of the check valve is improved, the auxiliary performance of the sealing device on the check valve is improved, and the inspection frequency of the worker is reduced; and the service life of the check valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to check valve technical field especially, relates to a piston type swing check valve. BACKGROUND

[0002] Swing check valve generally refers to check valve, check valve is fluid only along inlet, and the medium of outlet cannot backflow, commonly known as check valve, check valve is also called check valve or non-return valve, is used to prevent oil flow reverse flow in hydraulic system, or is used to prevent compressed air reverse flow in pneumatic system, check valve has straight-through type and right-angle type two, straight-through type check valve is installed on the pipeline with screw connection, right-angle type check valve has screw connection, plate type connection and flange connection three forms, with the development of society, when fluid flows, check valve is used.

[0003] The existing device such as CN202323280769, a piston type swing check valve, including valve body, valve cover, front flange and rear flange, the inner side of the valve body is provided with the rotating shaft, the outer side of the rotating shaft is rotatably connected with the rocker arm, the inner side of the rocker arm is spirally connected with the bolt, the outer side of the bolt is spirally connected with the check valve opening and closing block, the outer side of the check valve opening and closing block is fixedly connected with the limit piston, the inner side of the valve body is fixedly connected with the guide plate, in the utility model, the structure that the piston, check valve opening and closing block and elastic reset pull rope are set up, the sealing effect of check valve opening and closing block to valve body is strengthened, and the elastic reset pull rope can effectively avoid the problem that medium flows out due to the unresponsive closing of check valve, realize that the piston type swing check valve can enhance the sealing effect of check valve opening and closing block to valve body, solve the problem that medium leaks in different degrees due to the sealing failure.

[0004] When liquid needs to be discharged, the worker adjusts the check valve so that the liquid is discharged from the pipeline, but the existing check valve adjusts the blocking block by adjusting the pull rope when in use, but the pull rope will be subjected to the resistance of water flow in the process of adjustment, and the pull rope is soaked in water for a long time, so that the pull rope will be broken in use, thereby causing the problem that the worker needs to frequently check the pull rope. Utility model content

[0005] The utility model aims at solving the shortcomings that the worker needs to frequently check the pull rope in the prior art, and proposes a piston type swing check valve.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a piston type swing check valve, including main pipe, auxiliary pipe and closing device, the auxiliary pipe is installed on the surface of both ends of main pipe, the top of main pipe is installed with top cap, the closing device is arranged on the surface of main pipe, the closing device includes screw rod, the inner surface of main pipe is rotatably connected with screw rod, the surface of screw rod is connected with slide plate, the surface of slide plate is slidably connected with main pipe, the bottom of slide plate is fixedly connected with stopper, the inner surface of auxiliary pipe is inserted with stopper, one end of screw rod is fixedly connected with auxiliary wheel, the surface of top cap is fixedly connected with drive motor, the drive end of drive motor is fixedly connected with rotating wheel, the belt is installed between rotating wheel and auxiliary wheel, the surface of main pipe is fixedly connected with rubber ring, the surface of rubber ring is sleeved with stopper, and rubber ring can be matched with stopper to reach the purpose of sealing.

[0007] Preferably, the inner surface of the main pipe is fixedly connected with a slide rod, and the surface of the slide plate is slidably connected with the slide rod.

[0008] Preferably, the surface of the main pipe is provided with a leakage prevention device, the leakage prevention device comprises a second fixed ring, the second fixed ring is sleeved on the surface of the main pipe, the second fixed ring is sleeved on the surface of the top cap, the surface of the main pipe is sleeved with a first fixed ring, the first fixed ring is sleeved on the surface of the top cap, and the second fixed ring can be matched with the first fixed ring to reach the purpose of limiting the top cap and the main cover.

[0009] Preferably, the surface of the second fixed ring at both ends is fixedly connected with a sleeve block, the sleeve block is sleeved on the surface of the first fixed ring, the surface of the first fixed ring at both ends is fixedly connected with a positioning rod, the sleeve block is sleeved on the surface of the positioning rod, and the sleeve block can be matched with the second fixed ring and the positioning rod to reach the purpose of supporting the second fixed ring.

[0010] Preferably, the surface of the first fixed ring and the second fixed ring is provided with a sleeve opening, the surface of the top cap and the main pipe is fixedly connected with an anti-skid block, and the sleeve opening is sleeved on the surface of the anti-skid block.

[0011] Preferably, the surface of the positioning rod is threadedly connected with a threaded block, the threaded block is inserted with the surface of the sleeve block, and the threaded block can be matched with the positioning rod to reach the purpose of limiting the second fixed ring.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] 1. The utility model discloses a closed device is set up, when the check valve is used, the check valve is adjusted to the worker conveniently, uses the equipment, the equipment can reach the purpose of controlling water flow with the mode of blocking water flow, starts drive motor, drive motor drives rotating wheel, rotating wheel drives belt, belt drives auxiliary wheel, auxiliary wheel drives screw rod rotation, and the sliding plate is adjusted to slide with the rotation of screw rod, and the sliding plate is guided to slide with guide rod, and the sliding plate slides and pushes the blockage piece, and the blockage piece is set on the rubber ring, through set up the closed device, the check valve is adjusted to the worker conveniently, when the check valve is used, adjusts the closed device, avoids the pull rope to soak in water for a long time, improves the practicality of check valve, improves the auxiliary nature of the closed device to check valve, reduces the inspection frequency of the worker, improves the service life of check valve. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A three-dimensional structure schematic diagram of the piston type swing check valve is provided for the utility model;

[0015] Figure 2 A closed device structure schematic diagram of the piston type swing check valve is provided for the utility model;

[0016] Figure 3 A structure schematic diagram of the piston type swing check valve in A is provided for the utility model; Figure 2 A structure schematic diagram of the piston type swing check valve in B is provided for the utility model;

[0017] Figure 4 A leakage prevention device structure schematic diagram of the piston type swing check valve is provided for the utility model;

[0018] Figure 5 A structure schematic diagram of the piston type swing check valve in C is provided for the utility model; Figure 4 A structure schematic diagram of the piston type swing check valve in B is provided for the utility model;

[0019] LEGEND:

[0020] 1, main pipe, 2, auxiliary pipe, 3, closed device, 31, drive motor, 32, rotating wheel, 33, belt, 34, auxiliary wheel, 35, sliding rod, 36, screw rod, 37, sliding plate, 38, rubber ring, 39, blockage piece, 4, leakage prevention device, 41, sleeve mouth, 42, second fixed ring, 43, anti -slip block, 44, sleeve piece, 45, first fixed ring, 46, threaded block, 47, positioning rod, 5, top cap. DETAILED DESCRIPTION

[0021] Please refer to Figures 1-5 The utility model provides a technical scheme: a piston type swing check valve, including main pipe 1, auxiliary pipe 2 and closed device 3, auxiliary pipe 2 installs on the surface on both ends of main pipe 1, and the top of main pipe 1 is installed with top cap 5, and closed device 3 is set up on the surface of main pipe 1.

[0022] The specific settings and functions of the closing device 3 and the leakage prevention device 4 will be described below.

[0023] In this embodiment, the closing device 3 comprises a threaded rod 36 rotatably connected to the inner surface of the main pipe 1, the surface of the threaded rod 36 is threadedly connected with a sliding plate 37, the sliding plate 37 is slidingly connected to the surface of the main pipe 1, the bottom end of the sliding plate 37 is fixedly connected with a blocking block 39, the blocking block 39 is inserted into the inner surface of the auxiliary pipe 2, one end of the threaded rod 36 is fixedly connected with an auxiliary wheel 34, the surface of the top cover 5 is fixedly connected with a driving motor 31, the driving end of the driving motor 31 is fixedly connected with a rotating wheel 32, and the rotating wheel 32 is installed with the auxiliary wheel 34 through a belt 33.

[0024] Specifically, the surface of the main pipe 1 is fixedly connected with a rubber ring 38, the blocking block 39 is sleeved on the surface of the rubber ring 38, and the rubber ring 38 can cooperate with the blocking block 39 to achieve the purpose of sealing.

[0025] Specifically, the inner surface of the main pipe 1 is fixedly connected with a sliding rod 35, and the sliding plate 37 is slidingly connected to the surface of the sliding rod 35.

[0026] In this embodiment, the sliding rod 35 can cooperate with the main pipe 1 and the sliding plate 37 to achieve the purpose of supporting and guiding the sliding plate 37.

[0027] In this embodiment, the surface of the main pipe 1 is provided with the leakage prevention device 4, the leakage prevention device 4 comprises a second fixed ring 42, the second fixed ring 42 is sleeved on the surface of the main pipe 1, the second fixed ring 42 is sleeved on the surface of the top cover 5, the surface of the main pipe 1 is sleeved and connected with a first fixed ring 45, the first fixed ring 45 is sleeved on the surface of the top cover 5, and the second fixed ring 42 can cooperate with the first fixed ring 45 to achieve the purpose of limiting the top cover 5 and the main cover.

[0028] Specifically, the surface of the two ends of the second fixed ring 42 is fixedly connected with a sleeve block 44, the sleeve block 44 is sleeved on the surface of the first fixed ring 45, the surface of the two ends of the first fixed ring 45 is fixedly connected with a positioning rod 47, and the sleeve block 44 is sleeved on the surface of the positioning rod 47.

[0029] In this embodiment, the sleeve block 44 can cooperate with the second fixed ring 42 and the positioning rod 47 to achieve the purpose of supporting the second fixed ring 42.

[0030] Specifically, the surface of the first fixed ring 45 and the second fixed ring 42 is provided with a sleeve opening 41, the surface of the top cover 5 and the main pipe 1 is fixedly connected with an anti-skid block 43, the sleeve opening 41 is sleeved on the surface of the anti-skid block 43, and the sleeve opening 41 can cooperate with the anti-skid block 43 to achieve the purpose of limiting the top cover 5 and the main pipe 1.

[0031] Specific, positioning rod 47 surface thread connection with threaded block 46, threaded block 46 and the surface of the sleeve block 44.

[0032] In this embodiment: threaded block 46 can be matched with positioning rod 47 to achieve the purpose of limiting the second fixed ring 42.

[0033] Working principle: by setting the closure device 3, when the check valve is used, the worker is convenient to adjust the check valve, use the device, the device can be blocked by the way of water flow, in order to control the purpose of water flow, start the drive motor 31, drive motor 31 drive rotating wheel 32, rotating wheel 32 belt 33, belt 33 auxiliary wheel 34, auxiliary wheel 34 drive screw rod 36 rotation, screw rod 36 rotation and adjust the sliding plate 37 sliding, guide rod guide sliding plate 37 sliding, sliding plate 37 sliding and push the plug block 39, plug block 39 set in rubber ring 38, by setting the closure device 3, effectively facilitate the worker to adjust the check valve, when the check valve is used, adjust the closure device 3, avoid the pull rope long time soaking in water, improve the practicality of check valve, improve the auxiliary of closure device 3 to check valve, reduce the inspection frequency of workers, improve the service life of check valve, in addition, by setting the leakage device 4, when the check valve is used, reduce the loose situation of top cover 5, use the device, the device can be blocked by the way of water flow, in order to control the purpose of water flow, the first fixed ring 45 set in the top cover 5 and main pipe 1, the first fixed ring 45 surface sleeve 41 set in the anti-skid block 43, the second fixed ring 42 set in the top cover 5 and main pipe 1, the second fixed ring 42 both ends of the sleeve block 44 set in the positioning rod 47, the second fixed ring 42 surface sleeve 41 set in the anti-skid block 43, rotate the threaded block 46, threaded block 46 against the second fixed ring 42, by setting the leakage device 4, effectively reduce the loose situation of top cover 5, when the check valve is used, install the leakage device 4, avoid the check valve after long time use, improve the practicality of check valve, improve the auxiliary of leakage device 4 to check valve, improve the service life of check valve.

Claims

1. A piston-type swing check valve comprising a main pipe (1), an auxiliary pipe (2) and a closing device (3), characterized in that: The auxiliary pipe (2) is installed on the surface of both ends of the main pipe (1), the top end of the main pipe (1) is provided with a top cover (5), the sealing device (3) is arranged on the surface of the main pipe (1), the sealing device (3) comprises a threaded rod (36), the threaded rod (36) is rotatably connected with the inner surface of the main pipe (1), the surface of the threaded rod (36) is threadedly connected with a sliding plate (37), the sliding plate (37) is slidably connected with the surface of the main pipe (1), the bottom end of the sliding plate (37) is fixedly connected with a blocking block (39), the blocking block (39) is inserted with the inner surface of the auxiliary pipe (2), one end of the threaded rod (36) is fixedly connected with an auxiliary wheel (34), the surface of the top cover (5) is fixedly connected with a driving motor (31), the driving end of the driving motor (31) is fixedly connected with a rotating wheel (32), the rotating wheel (32) and the auxiliary wheel (34) are provided with a belt (33).

2. A piston-type swing check valve according to claim 1, wherein: The surface of the main pipe (1) is fixedly connected with a rubber ring (38), and the blocking block (39) is sleeved on the surface of the rubber ring (38).

3. A piston-type swing check valve according to claim 2, wherein: The inner surface of the main pipe (1) is fixedly connected with a sliding rod (35), and the surface of the sliding plate (37) is slidably connected with the sliding rod (35).

4. A piston-type swing check valve according to claim 3, wherein: The surface of the main pipe (1) is provided with a leakage prevention device (4), the leakage prevention device (4) comprises a second fixed ring (42), the second fixed ring (42) is sleeved on the surface of the main pipe (1), the second fixed ring (42) is sleeved on the surface of the top cover (5), the surface of the main pipe (1) is sleeved with a first fixed ring (45), and the first fixed ring (45) is sleeved on the surface of the top cover (5).

5. A piston-type swing check valve according to claim 4, wherein: The surface of the second fixed ring (42) is fixedly connected with a sleeve block (44) at both ends, the sleeve block (44) is sleeved on the surface of the first fixed ring (45), the surface of the first fixed ring (45) is fixedly connected with a positioning rod (47) at both ends, and the sleeve block (44) is sleeved on the surface of the positioning rod (47).

6. A piston-type swing check valve according to claim 5 wherein: The surface of the first fixed ring (45) and the second fixed ring (42) is provided with a sleeve opening (41), the surface of the top cover (5) and the main pipe (1) is fixedly connected with an anti-skid block (43), and the sleeve opening (41) is sleeved on the surface of the anti-skid block (43).

7. A piston-type swing check valve according to claim 5 wherein: The surface of the positioning rod (47) is threadedly connected with a threaded block (46), and the threaded block (46) is inserted with the surface of the sleeve block (44).

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