CN223459918U

CN223459918U - A pneumatic stop valve

Info

Publication number: CN223459918U
Application number: CN202521906028.1U
Authority: CN
Inventors: 涂克杰; 陈成满; 奚晟洋; 张道凯; 杨志; 车灿
Original assignee: WENZHOU JINXIN BIOCHEMICAL VALVE CO LTD
Current assignee: WENZHOU JINXIN BIOCHEMICAL VALVE CO LTD
Priority date: 2025-09-04
Filing date: 2025-09-04
Publication date: 2025-10-21
Anticipated expiration: 2035-09-04

Abstract

The utility model discloses a pneumatic stop valve, which comprises a valve body, set up the water channel in the valve body, the valve body top is provided with the valve gap, valve body middle part slip is provided with the valve rod, the valve rod lower extreme is provided with the valve clack, annular draw-in groove has been seted up to the valve clack bottom, the joint has the closing plate in the annular draw-in groove, the utility model discloses a set up the support at the valve gap upper end and install pneumatic actuator for pneumatic actuator's output and valve rod top carry out the transmission and are connected, drive the valve rod through pneumatic actuator and slide from top to bottom, and then realize opening and shutting of stop valve, easy operation is convenient, labour saving and time saving, convenient to control sets up the closing plate and water channel middle part's boss cooperation to the water channel of stop valve in the valve clack bottom and is opened and is closed, on the one hand strengthens the sealing performance of valve clack and boss, and on the other hand makes the valve clack not with boss direct contact, reduces the wearing and tearing of valve clack, and then prolongs the life of valve clack, practices thrift the cost.

Description

Pneumatic stop valve

Technical Field

The utility model relates to the technical field of stop valves, in particular to a pneumatic stop valve.

Background

The stop valve is a valve with large usage amount and a large number of structural forms, can adapt to the requirements of different working conditions, can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, has relatively short valve rod opening stroke, has the opening height of generally only 1/4 of the diameter of a valve seat channel, has small friction force between sealing surfaces, and has very reliable cutting-off function. The shut-off valve has only one sealing surface, so the manufacturing manufacturability is good, and the maintenance is convenient, so the shut-off valve is very popular in industrial systems.

But the common stop valve is inconvenient to operate, the hand wheel adjusting valve rod is required to be manually turned for opening and closing, the valve is more frequently used, abrasion is easily caused when the valve clack is frequently contacted with the boss, leakage is caused at the joint, the sealing performance of the stop valve is further affected, and the service life of the valve clack is reduced.

Accordingly, there is a need to provide a pneumatic shut-off valve that solves the above-mentioned problems.

Disclosure of utility model

The utility model aims to provide a pneumatic stop valve to solve the problems in the prior art.

In order to achieve the above purpose, the pneumatic stop valve comprises a valve body, wherein a water passing channel is formed in the valve body, a valve cover is arranged at the top of the valve body, a valve rod is slidably arranged in the middle of the valve body, a valve clack is arranged at the lower end of the valve rod, an annular clamping groove is formed in the bottom of the valve clack, a sealing plate is clamped in the annular clamping groove, the sealing plate is tightly attached to a boss on the water passing channel formed in the middle of the valve body, the upper end of the valve rod penetrates through the valve cover to extend to the upper side of the valve cover, a support is arranged at the top of the valve cover, the top of the valve rod is positioned in the support, a clamping block is arranged in the support, a pin shaft is arranged at the lower end of the clamping block, a filler is inserted at the top of the valve cover, a pneumatic actuator is arranged at the top of the support, the output end of the pneumatic actuator is in transmission connection with the top of the valve rod, a pneumatic triplet is arranged on the pneumatic actuator, a signal feedback device is arranged at the joint of the valve rod, an output end of the signal feedback device is arranged at the bottom of the valve rod, and a bypass valve body is arranged at the bottom of the valve body, and a bypass valve is arranged at the valve body.

As a preferable technical scheme of the utility model, the lower end of the outer circumferential surface of the valve rod is provided with a valve clack nut, and the lower end of the valve rod is connected in the valve clack through the valve clack nut in a threaded manner.

As a preferable technical scheme of the utility model, a groove is formed in the part, which is deep into the valve clack, of the valve rod, a split ring is clamped in the groove, and the split ring is positioned below a valve clack nut.

As a preferable technical scheme of the utility model, the top of the valve clack is provided with a locating piece.

As a preferable technical scheme of the utility model, a convex column is arranged at the middle position of the bottom of the valve clack, an external thread is arranged on the outer circumferential surface of the convex column, a sealing pressing plate is sleeved on the convex column, a first nut is connected with the convex column in a threaded manner, and a first cotter pin is inserted on the convex column.

As a preferable technical scheme of the utility model, a packing gland is arranged at the top of the packing, a pressing block is arranged on the packing gland, loose joint bolts are inserted into the pressing block, the packing gland and the clamping block, a second cotter pin is inserted into the bottom of the loose joint bolts, and nuts are connected with the top of the loose joint bolts in a threaded manner.

As a preferable technical scheme of the utility model, a middle gasket is arranged between the valve body and the valve cover.

As a preferable technical scheme of the utility model, studs are inserted into four corners of the joint of the valve cover and the valve body, the tops of the studs penetrate through the valve body and the valve cover and extend to the upper part, and the tops of the studs are connected with second nuts in a threaded manner.

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

According to the pneumatic stop valve, the support is arranged at the upper end of the valve cover to install the pneumatic actuator, so that the output end of the pneumatic actuator is in transmission connection with the top of the valve rod, the valve rod is driven to slide up and down by the pneumatic actuator, the stop valve is further opened and closed, the operation is simple and convenient, time and labor are saved, the control is facilitated, the support is internally provided with the packing sleeve on the outer circumferential surface of the valve rod, the joint of the valve rod and the support is sealed, the working state of the joint of the pneumatic actuator and the valve rod can be monitored in real time by the signal feedback device arranged on the support, signals are fed back to the pneumatic triplet in time, the pneumatic actuator is controlled to work by the pneumatic triplet, the sealing performance of the valve clack and the boss in the middle of the water passage is enhanced by matching the boss arranged at the bottom of the valve clack, liquid is prevented from leaking through the boss and the joint of the valve clack when the stop valve is in the closed state, the valve clack is prevented from being in direct contact with the boss, the abrasion of the valve clack is reduced, and only the sealing plate is required to be replaced when the sealing plate is leaked for a long time, the valve clack is not required to be replaced, the service life of the valve clack is prolonged, and the service life of the valve clack is saved.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of the overall structure of the present utility model.

In the figure, 1, a valve body; 2, a first cotter pin, 3, a first nut, 4, a sealing pressing plate, 5, a sealing plate, 6, a valve clack, 7, a split ring, 8, a valve clack nut, 9, a locating piece, 10, a valve rod, 11, a middle gasket, 12, a stud, 13, a valve cover, 14, packing, 15, a second nut, 16, a second cotter pin, 17, a pin shaft, 18, a loose joint bolt, 19, a packing gland, 20, an inlet bypass valve, 21, an outlet bypass valve, 22, a bracket, 23, a signal feedback device, 24, a pneumatic actuator, 25 and a pneumatic triplet.

Detailed Description

Embodiments of the present utility model are described below with reference to the accompanying drawings. In this process, to ensure clarity and convenience of description, the widths of the lines or the sizes of the constituent elements in the drawings may be exaggerated.

In addition, the terms hereinafter are defined based on functions in the present utility model, and may be different according to intention of a user, an operator, or a convention. Accordingly, these terms are defined based on the entire contents of the present specification.

As shown in fig. 1, a pneumatic stop valve comprises a valve body 1, a water passing channel is formed in the valve body 1, a valve cover 13 is arranged at the top of the valve body 1, a middle gasket 11 is arranged between the valve body 1 and the valve cover 13, the joint of the valve body 1 and the valve cover 13 is sealed through the middle gasket 11, water is prevented from leaking through the joint of the valve body 1 and the valve cover 13, studs 12 are inserted into four corners of the joint of the valve cover 13 and the valve body 1, the top of each stud 12 penetrates through the valve body 1 and the valve cover 13 to extend to the upper side, a second nut 15 is connected with the top of each stud 12 in a threaded manner, and the valve cover 13 is locked and fixed at the top of the valve body 1 through the cooperation of the studs 12 and the second nut 15.

The valve body 1 middle part slip is provided with valve rod 10, valve rod 10 outer circumference lower extreme is provided with valve clack nut 8, valve rod 10 lower extreme is provided with valve clack 6, valve rod 10 lower extreme passes through valve clack nut 8 threaded connection in valve clack 6, valve rod 10 is in deep into the part of valve clack 6 and is seted up flutedly, the joint has split ring 7 in the recess, split ring 7 is located valve clack nut 8 below, valve clack 6 top is provided with spacer 9, fixes a position valve clack nut 8, easy to assemble, annular draw-in groove has been seted up to valve clack 6 bottom, annular draw-in groove joint has closing plate 5, valve clack 6 bottom intermediate position is provided with the projection, the external screw thread has been seted up on the projection outer circumference, the cover is equipped with sealing clamp plate 4 on the projection, threaded connection has first nut 3 on the projection, compresses tightly sealing clamp plate 4 in closing plate 5 bottom through first nut 3, peg graft on the projection has first split pin 2, realizes the boss cooperation on the passageway through closing plate 5 and valve body 1 middle part, and seals the passageway that the passageway is closed, prevents more closely, prevents that the leak from sealing.

The upper end of the valve rod 10 extends to the upper side of the valve rod through the valve cover 13, a support 22 is arranged at the top of the valve cover 13, the top of the valve rod 10 is located in the support 22, a clamping block is arranged in the support 22, a pin shaft 17 is arranged at the lower end of the clamping block, the lower end of the pin shaft 17 is inserted at the top of the valve cover 13, a packing 14 is inserted in the middle of the clamping block, the packing 14 is sleeved on the outer circumferential surface of the valve rod 10, a packing gland 19 is arranged at the top of the packing 14, a pressing block is arranged on the packing gland 19, a loose joint bolt 18 is inserted in the pressing block, a second cotter pin 16 is inserted at the bottom of the loose joint bolt 18, a nut is connected at the top of the loose joint bolt 18 in a threaded manner, the packing 14 is pressed and fixed through the cooperation of the loose joint bolt 18 and the nut, a pneumatic actuator 24 is arranged at the top of the support 22, the output end of the pneumatic actuator 24 is in transmission connection with the top of the valve rod 10, the pneumatic actuator 24 drives the valve rod 10 to slide up and down through the pneumatic actuator 24, and further the opening and closing of the stop valve, a pneumatic triplet 25 is arranged on the pneumatic actuator 24, a pneumatic actuator 25 is connected with the valve body 24, and the valve body 20 through the pneumatic actuator 24, and the valve body 1 are connected with the valve body 20 through the bypass valve body 1, and the bypass valve body 20, and the valve body 1 through the bypass valve body, and the valve body 2.

The embodiment specifically is, install pneumatic actuator 24 through setting up support 22 in valve gap 13 upper end for pneumatic actuator 24's output and valve rod 10 top carry out the transmission and are connected, drive valve rod 10 through pneumatic actuator 24 and slide from top to bottom, and then realize opening and close of stop valve, easy operation is convenient, labour saving and time saving, be convenient for control, install packing 14 cover in support 22 and establish on valve rod 10 outer periphery, seal the junction of valve rod 10 and support 22 and valve gap 13, set up the working condition of signal feedback ware 23 can real-time supervision pneumatic actuator 24 and valve rod 10 junction on support 22, in time with signal feedback to pneumatic triplet 25, control pneumatic actuator 24 work through pneumatic triplet 25, set up closing plate 5 and the boss cooperation at the middle part of the water channel in valve clack 6 bottom and open and close the water channel of stop valve, on the one hand strengthen the sealing performance of valve clack 6 and boss, liquid is through boss and valve clack 6 junction when preventing the stop valve in the closed state, on the other hand make valve clack 6 not directly contact with the boss, reduce the wearing and tearing of valve clack 6, when 5 use and take place the leakage for a longer time, the sealing plate 6 only need not change the sealing plate 6, and the life-span is saved.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The pneumatic stop valve is characterized by comprising a valve body (1), a water passing channel is formed in the valve body (1), a valve cover (13) is arranged at the top of the valve body (1), a valve rod (10) is slidably arranged in the middle of the valve body (1), a valve clack (6) is arranged at the lower end of the valve rod (10), an annular clamping groove is formed in the bottom of the valve clack (6), a sealing plate (5) is clamped in the annular clamping groove, the sealing plate (5) is tightly attached to a boss on the water passing channel is formed in the middle of the valve body (1), the upper end of the valve rod (10) penetrates through the valve cover (13) and extends to the upper side of the valve cover, a support (22) is arranged at the top of the valve cover (13), a clamping block is arranged in the support (22) at the top of the valve rod (10), a pin shaft (17) is arranged at the lower end of the clamping block, a packing (14) is inserted at the top of the valve cover (13), the middle of the clamping block is sleeved on the outer circumference of the valve rod (10), a pneumatic actuator (24) is arranged at the top of the valve rod (24), a pneumatic actuator (24) is arranged at the top of the pneumatic actuator (24), the pneumatic valve is characterized in that a signal feedback device (23) is arranged at the joint of the pneumatic actuator (24) and the valve rod (10), the output end of the signal feedback device (23) is arranged at the joint of the valve rod (10) and the pneumatic actuator (24), an inlet bypass valve (20) is arranged at the bottom of the valve body (1), and an outlet bypass valve (21) is arranged inside the valve body (1).

2. A pneumatic stop valve according to claim 1, wherein a valve clack nut (8) is arranged at the lower end of the outer circumferential surface of the valve rod (10), and the lower end of the valve rod (10) is connected in the valve clack (6) through the valve clack nut (8) in a threaded mode.

3. A pneumatic stop valve according to claim 1, characterized in that the part of the valve rod (10) penetrating into the valve clack (6) is provided with a groove, a split ring (7) is clamped in the groove, and the split ring (7) is positioned below the valve clack nut (8).

4. A pneumatic stop valve according to claim 1, characterized in that the top of the valve flap (6) is provided with a positioning tab (9).

5. The pneumatic stop valve according to claim 1, wherein a convex column is arranged at the middle position of the bottom of the valve clack (6), an external thread is arranged on the outer circumferential surface of the convex column, a sealing pressing plate (4) is sleeved on the convex column, a first nut (3) is connected to the convex column in a threaded mode, and a first cotter pin (2) is inserted into the convex column in a plugging mode.

6. A pneumatic stop valve according to claim 1, wherein a packing gland (19) is arranged at the top of the packing (14), a pressing block is arranged on the packing gland (19), a loose joint bolt (18) is inserted into the pressing block, the packing gland (19) and the clamping block, a second cotter pin (16) is inserted into the bottom of the loose joint bolt (18), and a nut is connected with the top of the loose joint bolt (18) in a threaded mode.

7. A pneumatic shut-off valve according to claim 1, characterized in that a middle gasket (11) is arranged between the valve body (1) and the valve cover (13).

8. A pneumatic stop valve according to claim 1 is characterized in that studs (12) are inserted into four corners of the joint of the valve cover (13) and the valve body (1), the tops of the studs (12) penetrate through the valve body (1) and the valve cover (13) to extend to the upper side, and a second nut (15) is connected to the tops of the studs (12) in a threaded mode.