CN215690352U

CN215690352U - One-way valve negative pressure drainage device

Info

Publication number: CN215690352U
Application number: CN202122361141.4U
Authority: CN
Inventors: 李苗苗
Original assignee: Yantai Yuhuangding Hospital
Current assignee: Yantai Yuhuangding Hospital
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-01
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a one-way valve negative pressure drainage device, which comprises a one-way valve pipe, wherein the surface of the one-way valve pipe is in threaded connection with a connecting pipe, a sealing mechanism is arranged inside the one-way valve pipe, the surface of a drainage box is in threaded connection with a vacuum pump, two groups of lifting mechanisms are arranged inside the drainage box and are arranged in bilateral symmetry, a plugging mechanism is arranged on the surface of each lifting mechanism, a threaded rod moves upwards by using a front adjusting stepping motor through arranging the lifting mechanisms and the plugging mechanisms, then a sealing block is separated from a negative pressure hole, the vacuum pump is started to pump out gas in the one-way valve pipe and the connecting pipe to form negative pressure, then the stepping motor is adjusted to enable the sealing block to enter the negative pressure hole again and seal the negative pressure hole, meanwhile, a lifting cylinder is adjusted downwards to enable an extrusion block to be abutted against the surface of a sealing plate, the sealing plate is abutted against the inner wall of a sealing groove to form secondary sealing, guarantee sealed effect, simple structure effectively realizes breathing in and balanced negative pressure function, is fit for promoting.

Description

One-way valve negative pressure drainage device

Technical Field

The utility model belongs to the technical field of one-way valves, and particularly relates to a negative pressure drainage device of a one-way valve.

Background

The check valve is commonly called as a check valve, is also called as a check valve or a check valve and is used for preventing reverse flow of oil flow in a hydraulic system or preventing reverse flow of compressed air in a pneumatic system, and has a straight-through type and a right-angle type, wherein the straight-through type check valve is installed on a pipeline by threaded connection, and the right-angle type check valve has three forms of threaded connection, plate type connection and flange connection.

The existing check valve is fixed on a pipeline through threads or flanges when in use, the sealing performance of the pipeline cannot be effectively guaranteed, fluid in the pipeline is easy to leak, the actual use quality is influenced, meanwhile, in the use process of the check valve, the negative pressure effect in the horizontal pipeline is small, the fluid flowing speed in the pipeline is slow, a negative pressure device is arranged on a part of water pipes, but the flexibility and the sealing performance are poor, the functions of air suction and negative pressure balance cannot be effectively realized, and therefore the check valve negative pressure drainage device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a one-way valve negative pressure drainage device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a check valve negative pressure drainage device, includes the check valve pipe, the surperficial spiro union of check valve pipe has the connecting pipe, the surface of connecting pipe is provided with sealing mechanism, sealing mechanism sets up the inside at the check valve pipe, the fixed surface of connecting pipe has the drainage case, the surperficial spiro union of drainage case has the vacuum pump, the inside of drainage case is provided with two sets of elevating system, and is two sets of elevating system bilateral symmetry sets up, elevating system's surface is provided with shutoff mechanism.

Preferably, sealing mechanism includes the inside seal pad and the inside seal groove, and the left surface of connecting pipe is fixed with the inner tube, and the diameter of inner tube is less than the internal diameter of check valve pipe, the inside seal pad is the annular structure of both sides face to inboard slope, the lateral surface at the inner tube is fixed to the inside seal pad, the inner wall at the check valve pipe is seted up to the inside seal groove, the inside seal pad offsets with the inner wall of inside seal groove.

Preferably, sealing mechanism still includes outer seal pad and outer seal groove, outer seal pad is the same with inner seal pad's structure, the inner wall of seal groove including outer seal pad is fixed, outer seal groove sets up the lateral surface of inner seal pad, outer seal pad offsets with the inner wall of outer seal groove.

Preferably, elevating system includes step motor, threaded rod and link, both ends about the last inner wall of drainage case are fixed to the step motor spiro union, the upper surface of threaded rod passes through the shaft coupling and is connected with step motor's power take off end transmission, link threaded connection is on the surface of threaded rod.

Preferably, the lifting mechanism further comprises two groups of bearing seats, the two groups of bearing seats are sleeved on the circumferential surfaces of the upper end portion and the lower end portion of the threaded rod, a support is fixed on the inner wall of the drainage box, and the bearing seats are fixed on the surface of the support.

Preferably, the shutoff mechanism includes sealed piece, lift cylinder, extrusion piece, closing plate and seal groove, the lower surface at the link is fixed to sealed piece, the inside at the link is fixed to the lift cylinder, the lift cylinder sets up the inboard at sealed piece, the output of lift cylinder sets up down, the output surface at the lift cylinder is fixed to the extrusion piece, the equal sliding connection of extrusion piece and closing plate is in the inside of sealed piece, the side of extrusion piece is the inclined plane, the lateral surface of extrusion piece offsets with the medial surface of closing plate, the negative pressure hole has been seted up to the upper end inside of connecting pipe, the seal groove is seted up at negative pressure downthehole wall, the closing plate offsets with the inner wall of seal groove.

Preferably, the plugging mechanism further comprises a pressing plate and an extrusion spring, the pressing plate is fixed on the upper surface of the sealing plate, the left end of the extrusion spring is fixed on the right side face of the pressing plate, a notch is formed in the sealing block, the right end of the extrusion spring is fixed on the inner side wall of the notch, and the pressing plate is connected in the notch in a sliding mode.

Compared with the prior art, the utility model has the beneficial effects that:

one, this check valve negative pressure drainage device, through setting up sealing mechanism, press close to the surface of check valve pipe with the connecting pipe before the use, the inner seal pad slides and finally offsets with the inner wall of inner seal groove along the inner wall of check valve pipe, realize preliminary sealing, the outer seal pad offsets with the inner wall of outer seal groove simultaneously, realize the second grade and seal, guarantee the leakproofness of check valve pipe and connecting pipe, then fix with the connecting pipe spiro union one-way valve pipe through the flange, guarantee the joint strength of the two.

Two, this check valve negative pressure drainage device, through setting up elevating system and shutoff mechanism, it makes the threaded rod rebound to adjust step motor before using, then make sealed piece break away from the negative pressure hole, start the vacuum pump and take out the formation negative pressure with the gas in check valve pipe and the connecting tube, then adjust step motor and make sealed piece get into the negative pressure hole again and seal to it, adjust lift cylinder downwards simultaneously and make extrusion piece and closing plate surface counterbalance, the closing plate offsets with the seal groove inner wall, it is sealed to form the second grade, guarantee sealed effect, moreover, the steam generator is simple in structure, effectively realize breathing in and balanced negative pressure function, and is suitable for popularization.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2A according to the present invention;

fig. 4 is an enlarged view of the structure at B in fig. 2 according to the present invention.

In the figure: 1. a check valve tube; 2. a connecting pipe; 3. a sealing mechanism; 301. an inner seal; 302. an inner seal groove; 303. an outer seal gasket; 304. an outer seal groove; 4. a drainage box; 5. a vacuum pump; 6. a lifting mechanism; 601. a stepping motor; 602. a threaded rod; 603. a connecting frame; 604. a bearing seat; 7. a plugging mechanism; 701. a sealing block; 702. a lifting cylinder; 703. extruding the block; 704. a sealing plate; 705. a sealing groove; 706. pressing a plate; 707. compressing the spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-4, the utility model provides a one-way valve negative pressure drainage device, which comprises a one-way valve tube 1, wherein a connecting tube 2 is screwed on the surface of the one-way valve tube 1, a sealing mechanism 3 is arranged on the surface of the connecting tube 2, the sealing mechanism 3 is arranged inside the one-way valve tube 1, a drainage box 4 is fixed on the surface of the connecting tube 2, a vacuum pump 5 is screwed on the surface of the drainage box 4, two sets of lifting mechanisms 6 are arranged inside the drainage box 4, the two sets of lifting mechanisms 6 are arranged in a left-right symmetrical manner, and a plugging mechanism 7 is arranged on the surface of the lifting mechanism 6.

In this embodiment, preferably, the sealing mechanism 3 includes an inner gasket 301 and an inner sealing groove 302, an inner tube is fixed to a left side surface of the connecting pipe 2, a diameter of the inner tube is smaller than an inner diameter of the check valve pipe 1, the inner gasket 301 is an annular structure with two sides inclined toward the inner side, the inner gasket 301 is fixed to an outer side surface of the inner tube, the inner sealing groove 302 is formed in an inner wall of the check valve pipe 1, the inner gasket 301 abuts against an inner wall of the inner sealing groove 302, when the check valve pipe 1 and the connecting pipe 2 are installed, the inner gasket 301 slides along the inner wall of the check valve pipe 1 and finally abuts against the inner wall of the inner sealing groove 302, so as to ensure the sealing performance of the check valve pipe 1 and the connecting pipe 2, the fitting flange fixes the check valve pipe 1 and the connecting pipe 2 together by means of screw joint, and ensure the connection strength of the check valve pipe 1 and the connecting pipe 2.

In this embodiment, preferably, the sealing mechanism 3 further includes an outer sealing pad 303 and an outer sealing groove 304, the outer sealing pad 303 and the inner sealing pad 301 have the same structure, the outer sealing pad 303 is fixed to the inner wall of the inner sealing groove 302, the outer sealing groove 304 is formed in the outer side surface of the inner sealing pad 301, the outer sealing pad 303 abuts against the inner wall of the outer sealing groove 304, and a two-stage sealing structure is formed by the outer sealing pad 303 and the outer sealing groove 304, so that fluid leakage in the check valve pipe 1 and the connecting pipe 2 is further avoided, and actual use quality is ensured.

In this embodiment, preferably, the lifting mechanism 6 includes a stepping motor 601, a threaded rod 602 and a connecting frame 603, the stepping motor 601 is screwed and fixed at the left and right ends of the upper inner wall of the drainage box 4, the upper surface of the threaded rod 602 is connected with the power output end of the stepping motor 601 through a shaft coupling, the connecting frame 603 is screwed on the surface of the threaded rod 602, the sealing block 701 is moved up and down by adjusting the stepping motor 601, the negative pressure hole is opened and closed, the structure is simple, and the internal pressure of the check valve tube 1 and the connecting tube 2 is conveniently controlled.

In this embodiment, preferably, the lifting mechanism 6 further includes bearing seats 604, the bearing seats 604 are provided with two sets, two sets of bearing seats 604 are sleeved on the circumferential surfaces of the upper and lower end portions of the threaded rod 602, the inner wall of the drainage box 4 is fixed with a support, the bearing seats 604 are fixed on the surface of the support, in the process of adjusting the rotation of the threaded rod 602, the threaded rod 602 is positioned and rotated in the inside of the bearing seat 604, the threaded rod 602 is prevented from deviating in position and angle, and then the lifting stability of the sealing block 701 is ensured.

In this embodiment, preferably, the plugging mechanism 7 includes a sealing block 701, a lifting cylinder 702, a squeezing block 703, a sealing plate 704 and a sealing groove 705, the sealing block 701 is fixed on the lower surface of the connecting frame 603, the lifting cylinder 702 is fixed inside the connecting frame 603, the lifting cylinder 702 is arranged inside the sealing block 701, the output end of the lifting cylinder 702 is arranged downward, the squeezing block 703 is fixed on the surface of the output end of the lifting cylinder 702, the squeezing block 703 and the sealing plate 704 are both slidably connected inside the sealing block 701, the side surface of the squeezing block 703 is an inclined surface, the outer side surface of the squeezing block 703 abuts against the inner side surface of the sealing plate 704, a negative pressure hole is formed inside the upper end of the connecting pipe 2, the sealing groove 705 is formed in the inner wall of the negative pressure hole, the sealing plate 704 abuts against the inner wall of the sealing groove 705, after the pressure adjustment of the check valve pipe 1 and the connecting pipe 2 is completed, the stepping motor 601 is adjusted to seal the negative pressure hole, then, the lifting cylinder 702 is adjusted downwards to enable the extrusion block 703 to be abutted against the surface of the sealing plate 704, and then the sealing plate 704 is abutted against the inner wall of the sealing groove 705, so that secondary sealing of the negative pressure hole is achieved, and sealing performance is guaranteed.

In this embodiment, preferably, the plugging mechanism 7 further includes a pressing plate 706 and an extrusion spring 707, the pressing plate 706 is fixed on the upper surface of the sealing plate 704, the left end of the extrusion spring 707 is fixed on the right side surface of the pressing plate 706, a notch is formed in the sealing block 701, the right end of the extrusion spring 707 is fixed on the inner side wall of the notch, the pressing plate 706 is slidably connected in the notch, when the internal pressure of the check valve pipe 1 and the connecting pipe 2 needs to be adjusted, the lifting cylinder 702 is adjusted upward to separate the extrusion block 703 from the sealing plate 704, the sealing plate 704 is separated from the sealing groove 705 under the elastic action of the extrusion spring 707, then the stepping motor 601 is adjusted to separate the sealing block 701 from the negative pressure hole, and the internal pressure of the check valve pipe 1 and the connecting pipe 2 can be adjusted by matching with the vacuum pump 5.

The working principle and the using process of the utility model are as follows: when the device is used, the connecting pipe 2 is pressed close to the surface of the check valve pipe 1 until the connecting pipe and the check valve pipe are abutted, the inner sealing gasket 301 abuts against the inner wall of the check valve pipe 1 and slides along the surface of the check valve pipe, finally the inner sealing gasket 301 abuts against the inner wall of the inner sealing groove 302 to realize primary sealing, and the outer sealing gasket 303 abuts against the inner wall of the outer sealing groove 304 to realize secondary sealing, so that the sealing performance of the connection of the check valve pipe 1 and the connecting pipe 2 is ensured, fluid leakage is avoided, then the check valve pipe 1 and the connecting pipe 2 are fixed in a threaded manner through a flange, the connection strength of the check valve pipe 1 and the connecting pipe 2 is ensured, before use, according to actual requirements, the stepping motor 601 is adjusted to enable the threaded rod 602 to rotate and drive the connecting frame 603 to move upwards, at the moment, the negative pressure hole in the connecting pipe 2 is opened, then the vacuum pump 5 is started to enable the check valve pipe 1 and the inside of the connecting pipe 2 to form negative pressure, then the stepping motor 601 is reversely adjusted to enable the connecting frame 603 to move downwards, then make seal block 701 block the negative pressure hole, adjust lift cylinder 702 downwards simultaneously and make extrusion block 703 and sealing plate 704's surface offset, then make sealing plate 704 and sealing groove 705's surface offset, guarantee actual leakproofness, avoid the fluid in the connecting pipe 2 to leak, open the check valve at this moment and can make the fluid flow out fast, improved the velocity of flow of fluid, then improved the work efficiency of check valve, simple structure is fit for promoting.

Claims

1. The utility model provides a check valve negative pressure drainage device, includes check valve pipe (1), its characterized in that: the surface spiro union of check valve pipe (1) has connecting pipe (2), the surface of connecting pipe (2) is provided with sealing mechanism (3), sealing mechanism (3) set up the inside at check valve pipe (1), the fixed surface of connecting pipe (2) has drainage case (4), the surface spiro union of drainage case (4) has vacuum pump (5), the inside of drainage case (4) is provided with two sets of elevating system (6), and is two sets of elevating system (6) bilateral symmetry sets up, the surface of elevating system (6) is provided with shutoff mechanism (7).

2. The one-way valve negative pressure drainage device according to claim 1, wherein: sealing mechanism (3) include inside seal pad (301) and inside seal groove (302), and the left surface of connecting pipe (2) is fixed with the inner tube, and the diameter of inner tube is less than the internal diameter of check valve pipe (1), inside seal pad (301) are the cyclic annular structure of both sides face to inboard slope, the lateral surface at the inner tube is fixed to inside seal pad (301), the inner wall at check valve pipe (1) is seted up in inside seal groove (302), inside seal pad (301) offset with the inner wall of inside seal groove (302).

3. The one-way valve negative pressure drainage device according to claim 2, characterized in that: sealing mechanism (3) still include outer sealing gasket (303) and external seal groove (304), outer sealing gasket (303) are the same with the structure of inner sealing gasket (301), the inner wall of sealing groove (302) including outer sealing gasket (303) are fixed, the lateral surface of inner sealing gasket (301) is seted up in outer sealing groove (304), outer sealing gasket (303) offset with the inner wall in external seal groove (304).

4. The one-way valve negative pressure drainage device according to claim 1, wherein: elevating system (6) are including step motor (601), threaded rod (602) and link (603), both ends about the last inner wall of drainage box (4) are fixed to step motor (601) spiro union, the upper surface of threaded rod (602) passes through the shaft coupling and is connected with the power take off end transmission of step motor (601), link (603) threaded connection is on the surface of threaded rod (602).

5. The one-way valve negative pressure drainage device according to claim 4, wherein: the lifting mechanism (6) further comprises bearing seats (604), the bearing seats (604) are arranged in two groups, the bearing seats (604) are sleeved on the circumferential surfaces of the upper end portion and the lower end portion of the threaded rod (602), a support is fixed on the inner wall of the drainage box (4), and the bearing seats (604) are fixed on the surface of the support.

6. The one-way valve negative pressure drainage device according to claim 4, wherein: the plugging mechanism (7) comprises a sealing block (701), a lifting cylinder (702), an extrusion block (703), a sealing plate (704) and a sealing groove (705), the sealing block (701) is fixed on the lower surface of the connecting frame (603), the lifting cylinder (702) is fixed inside the connecting frame (603), the lifting cylinder (702) is arranged on the inner side of the sealing block (701), the output end of the lifting cylinder (702) is arranged downwards, the extrusion block (703) is fixed on the surface of the output end of the lifting cylinder (702), the extrusion block (703) and the sealing plate (704) are both connected inside the sealing block (701) in a sliding mode, the side face of the extrusion block (703) is an inclined face, the outer side face of the extrusion block (703) is abutted against the inner side face of the sealing plate (704), a negative pressure hole is formed inside the upper end of the connecting pipe (2), and the sealing groove (705) is formed in the inner wall of the negative pressure hole, the sealing plate (704) abuts against the inner wall of the sealing groove (705).

7. The one-way valve negative pressure drainage device of claim 6, wherein: the plugging mechanism (7) further comprises a pressing plate (706) and an extrusion spring (707), the pressing plate (706) is fixed on the upper surface of the sealing plate (704), the left end of the extrusion spring (707) is fixed on the right side surface of the pressing plate (706), a notch is formed in the sealing block (701), the right end of the extrusion spring (707) is fixed on the inner side wall of the notch, and the pressing plate (706) is connected in the notch in a sliding mode.