CN208185557U - Pneumatic chlorine forged steel check valve - Google Patents

Abstract

The utility model discloses a kind of pneumatic chlorine forged steel check valves, it include: forged steel valve body, the lower end of the forged steel valve body is provided with intake channel and exit passageway, the upper end of the forged steel valve body is provided with forged steel valve deck, valve rod is provided in the forging steel valve body, the upper end of the valve rod connects pneumatic control component, the lower end of the valve rod connects flap component, airtight and watertight padding and pressing plate are provided between valve rod and forged steel valve deck, bellows is equipped in the lower section outer sheath of valve rod, one end of the bellows is welded on forging steel valve and covers, the other end of the bellows is welded on valve rod, the pneumatic control component includes: pneumatic actuator, filtering pressure reducing valve and solenoid valve, the upper end of the valve rod is connected by being pneumatically connected portion with pneumatic actuator, the pneumatic actuator is connected by column with forged steel valve deck.

Description

Pneumatic chlorine forged steel check valve

Technical field

The utility model relates to a kind of valve more particularly to a kind of pneumatic chlorine forged steel check valves.

Background technique

Chlorine cutoff valve is in chemical industry for controlling and adjusting a kind of common valve of the deep-etchings flow media such as chlorine Door.Existing chlorine cut-off specifically includes that valve body, the lower end of the valve body is provided with intake channel and exit passageway, in institute The upper end for stating valve body is provided with valve deck, valve rod is provided in the valve body, the upper end of the valve rod connects hand wheel component, described The lower end of valve rod connects flap component, airtight and watertight padding and pressing plate is provided between valve rod and cast steel valve deck, in the lower section of valve rod Outer sheath is equipped with bellows, and one end of the bellows is welded on cast-steel valve and covers, and the other end of the bellows is welded on valve On bar.Existing chlorine cutoff valve is all the opening and closing for being just able to achieve valve by manually pulling hand wheel component, automation Degree is low, large labor intensity, meanwhile, existing chlorine cutoff valve closure can only lean on feel, and flap contacts too tight abrasion with valve port Rate is high, and the too loose sealing of contact does not reach requirement, and control is inaccurate, in addition, existing chlorine cutoff valve flap is integrated with valve rod Structure is non-dismountable, once damaging, valve will directly be scrapped flap.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of cut-offs of the pneumatic chlorine forged steel of high degree of automation Valve.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is: pneumatic chlorine forged steel check valve, packet Include: forged steel valve body is provided with intake channel and exit passageway in the lower end of the forged steel valve body, in the upper end of the forged steel valve body It is provided with forged steel valve deck, valve rod is provided in the forging steel valve body, the upper end of the valve rod connects pneumatic control component, described The lower end of valve rod connects flap component, airtight and watertight padding and pressing plate is provided between valve rod and forged steel valve deck, in the lower section of valve rod Outer sheath is equipped with bellows, and one end of the bellows is welded on forging steel valve and covers, and the other end of the bellows is welded on valve On bar, the pneumatic control component includes: pneumatic actuator, filtering pressure reducing valve and solenoid valve, and the upper end of the valve rod passes through gas Rotation connection is connected with pneumatic actuator, and the pneumatic actuator is connected by column with forged steel valve deck, described pneumatic The pneumatic device guide plate being slidably matched with column is equipped on interconnecting piece by guide plate sandwiched, the filtering pressure reducing valve and solenoid valve are solid Fixed to be arranged on pneumatic actuator, the filtering pressure reducing valve is connected by the first air inlet pipe with solenoid valve, and the solenoid valve is logical It crosses the second air inlet pipe to be connected with pneumatic actuator, guide plate is provided with by holding screw in the upper end of the valve rod, it is described Guide plate slides are arranged on column, are provided on the column of the guide plate upper end and the mutually matched upper limit of guide plate Switch, be provided on the column of the guide plate lower end with the mutually matched lower position switch of guide plate, in the pressing plate, valve Be provided with bushing between bar and airtight and watertight padding, the flap component includes: flap and flap nut, the flap and setting into The valve port on forged steel valve body between mouth channel and exit passageway cooperates, and mounting groove is provided on the flap, in institute The lower end for stating valve rod is provided with and connect head with the mutually matched T-type of mounting groove, and T type connection head passes through flap nut Be fixed in mounting groove and be fixedly connected with flap, be provided between the forged steel valve body and forged steel valve deck in flange gasket.

The utility model has the advantages that: above-mentioned pneumatic chlorine forged steel check valve, valve body are designed using forged steel, can be suitable for The small-bore conveying of 15cm~40cm is controlled external air source in 4bar size by filtering pressure reducing valve, automatic by solenoid valve The switch driving stem of pneumatic actuator and the switch of flap are controlled, to realize the open and close of valve, the degree of automation Height reduces the labor intensity of worker, by upper and lower limit switch can guarantee flap can in fixed position on move down It is dynamic, it is not in that flap contacts too tight or too loose situation with valve port, wear rate is low, extends the service life of valve, control essence Really, the connection between flap and valve rod can dismantle completely, easy maintenance and replacement, improve the service life of valve.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the pneumatic chlorine forged steel check valve of the utility model.

Fig. 2 is the right side structural representation of Fig. 1.

In figure: 1, forged steel valve body, 2, intake channel, 3, exit passageway, 4, forged steel valve deck, 5, valve rod, 6, airtight and watertight padding, 7, pressing plate, 8, bellows, 9, pneumatic actuator, 91, be pneumatically connected portion, 10, filtering pressure reducing valve, 11, solenoid valve, 12, column, 13, guide plate presss from both sides, 14, pneumatic device guide plate, the 15, first air inlet pipe, the 16, second air inlet pipe, 17, holding screw, 18, guide plate, 19, upper limit switch, 20, lower position switch, 21, bushing, 22, flap, 23, flap nut, 24, T-type connect head, 25, in Flange gasket.

Specific embodiment

The particular content of the utility model is described in detail in the following with reference to the drawings and specific embodiments.

As shown in Figure 1 and Figure 2, pneumatic chlorine forged steel check valve, comprising: forged steel valve body 1, in the lower end of the forged steel valve body 1 It is provided with intake channel 2 and exit passageway 3, the upper end of the forged steel valve body 1 is provided with forged steel valve deck 4, in the forging steel valve Valve rod 5 is provided in body 1, the upper end of the valve rod 5 connects pneumatic control component, and the lower end of the valve rod 5 connects flap component, It is provided with airtight and watertight padding 6 and pressing plate 7 between valve rod 5 and forged steel valve deck 4, is equipped with bellows 8 in the lower section outer sheath of valve rod 5, One end of the bellows 8 is welded on forged steel valve deck 4, and the other end of the bellows 8 is welded on valve rod 5, described pneumatic Control assembly includes: pneumatic actuator 9, filtering pressure reducing valve 10 and solenoid valve 11, and the upper end of the valve rod 5 is by being pneumatically connected portion 91 are connected with pneumatic actuator 9, and the pneumatic actuator 9 is connected by column 12 with forged steel valve deck 4, pneumatically connect described The pneumatic device guide plate 14 being slidably matched with column 12,10 He of filtering pressure reducing valve are provided with by guide plate folder 13 in socket part 91 Solenoid valve 11 is fixed on pneumatic actuator 9, and the filtering pressure reducing valve 10 passes through the first air inlet pipe 15 and 11 phase of solenoid valve Connection, the solenoid valve 11 are connected by the second air inlet pipe 16 with pneumatic actuator 9, are passed through in the upper end of the valve rod 5 tight Determine screw 17 and be provided with guide plate 18, the guide plate 18 is slidably arranged on column 12, in the vertical of 18 upper end of guide plate Be provided on column 12 with the mutually matched upper limit switch 19 of guide plate 18, be arranged on the column 12 of 18 lower end of guide plate Have with the mutually matched lower position switch 20 of guide plate 18, be provided with bushing between the pressing plate 7, valve rod 5 and airtight and watertight padding 6 21, the flap component includes: flap 22 and flap nut 23, and the flap 22 is with setting in intake channel 2 and exit passageway Valve port on forged steel valve body 1 between 3 cooperates, and mounting groove is provided on the flap 22, under the valve rod 5 End, which is provided with, connect head 24 with the mutually matched T-type of mounting groove, and the T-type connection head 24 is fixed by flap nut 23 Be fixedly connected in mounting groove with flap 22, be provided between the forged steel valve body 1 and forged steel valve deck 4 in flange gasket 25.

Above-mentioned pneumatic chlorine cast steel stop valve in use, filtering pressure reducing valve 10 is connected with external air supply source air compressor machine, Filtering pressure reducing valve 10 can control gas source in 4bar size, open solenoid valve 11, gas source successively passes through 13 He of the first air inlet pipe Second air inlet pipe 14 enters in pneumatic actuator 9, and pneumatic actuator 9, which is opened to drive, under the action of gas pressure is pneumatically connected portion 91 move up, and are pneumatically connected portion 91 by guide plate folder 13 and drive the upward sliding on column 12 of pneumatic device guide plate 14, pneumatically Interconnecting piece 91 is moved up with ovable valve stem 5 simultaneously, and valve rod 5 connects head 24 by T-type and flap 22 is driven to separate with valve port, when Valve rod 5 drives guide plate 18 when sliding at upper limit switch 19 on column 12, and the stopping of valve rod 5 moves up, at this point, import Channel 2 is interconnected with exit passageway 3 and conveys to chlorine；Close solenoid valve 11, gas source the first air inlet pipe 13 with and the It is blocked between two air inlet pipe 14, pneumatic actuator 9 is not moved down by bleed pressure reset strap ovable valve stem 5, when valve rod 5 drives When sliding at lower position switch 20 on column 12, the stopping of valve rod 5 moves up guide plate 18, at this point, valve rod 5 passes through T-type Connection head 24 drives flap 22 to offset with valve port, and intake channel 2 is cut off with exit passageway 3 and can not be connected to.

Above-mentioned pneumatic chlorine forged steel check valve, valve body are designed using forged steel, can be suitable for the small-bore of 15cm~40cm External air source is controlled in 4bar size by filtering pressure reducing valve, passes through opening for solenoid valve Pneumatic automatic-control actuator by conveying The switch of driving stem and flap is closed, to realize the open and close of valve, high degree of automation reduces the labour of worker Intensity can guarantee that flap can move up and down in fixed position by upper and lower limit switch, be not in flap and valve Mouth contacts too tight or too loose situation, and wear rate is low, extends the service life of valve, control is accurate, between flap and valve rod Connection can dismantle completely, and easy maintenance and replacement improves the service life of valve.

Claims (1)

1. pneumatic chlorine forged steel check valve, it is characterised in that: include: forged steel valve body (1), in the lower end of the forged steel valve body (1) It is provided with intake channel (2) and exit passageway (3), the upper end of the forged steel valve body (1) is provided with forged steel valve deck (4), in institute It states and is provided with valve rod (5) in forged steel valve body (1), the upper end of the valve rod (5) connects pneumatic control component, the valve rod (5) Lower end connects flap component, airtight and watertight padding (6) and pressing plate (7) is provided between valve rod (5) and forged steel valve deck (4), in valve rod (5) lower section outer sheath is equipped with bellows (8), and one end of the bellows (8) is welded on forged steel valve deck (4), the ripple The other end of pipe (8) is welded on valve rod (5), and the pneumatic control component includes: pneumatic actuator (9), filtering pressure reducing valve (10) it is connected by being pneumatically connected portion (91) with pneumatic actuator (9) with solenoid valve (11), the upper end of the valve rod (5), institute It states pneumatic actuator (9) to be connected by column (12) with forged steel valve deck (4), passes through guide plate in described be pneumatically connected on portion (91) Folder (13) is provided with the pneumatic device guide plate (14) being slidably matched with column (12), the filtering pressure reducing valve (10) and solenoid valve (11) it is fixed on pneumatic actuator (9), the filtering pressure reducing valve (10) passes through the first air inlet pipe (15) and solenoid valve (11) it is connected, the solenoid valve (11) is connected by the second air inlet pipe (16) with pneumatic actuator (9), in the valve rod (5) upper end is provided with guide plate (18) by holding screw (17), and the guide plate (18) is slidably arranged on column (12), Be provided on the column (12) of the guide plate (18) upper end with guide plate (18) mutually matched upper limit switch (19), Be provided on the column (12) of guide plate (18) lower end with guide plate (18) mutually matched lower position switch (20), in institute State and be provided with bushing (21) between pressing plate (7), valve rod (5) and airtight and watertight padding (6), the flap component include: flap (22) and Flap nut (23), the flap (22) and setting are on the forged steel valve body (1) between intake channel (2) and exit passageway (3) Valve port cooperate, be provided with mounting groove on the flap (22), be provided with and mounting groove in the lower end of the valve rod (5) Mutually matched T-type connects head (24), T-type connection head (24) by flap nut (23) be fixed in mounting groove with Flap (22) is fixedly connected, and is provided with middle flange gasket (25) between the forged steel valve body (1) and forged steel valve deck (4).