CN211693575U - A new type of pneumatic regulating valve with bellows - Google Patents

Abstract

The utility model discloses a novel pneumatic regulating valve with a bellows, which comprises a valve body and a valve cover arranged on the valve body; a valve seat and a guide sleeve are arranged in the valve body; the valve cover is fixedly arranged on the valve body through a screw; a valve rod is arranged in the valve cover; one end of the valve rod is provided with an external thread, and the other end of the valve rod is provided with a valve core; a thin nut is arranged on the external thread; the valve is characterized in that a valve core packing groove is also arranged on the valve core; a valve core filler is arranged in the valve core filler groove; and a fixed nut block is arranged on the valve core filler. The utility model discloses simple structure reduces the wearing and tearing volume of case through installing the case filler on the case, thereby installs the sealing performance that the bellows increased the valve body moreover on the valve rod, prevents to leak, and the scope of use also can be wider.

Description

A new type of pneumatic regulating valve with bellows

【Technical field】

The utility model relates to the technical field of valves, in particular to a novel pneumatic regulating valve with bellows.

【Background technique】

In the automatic control of modern factories, regulating valves play a very important role, and the production of these factories depends on the correct distribution and control of the flowing medium. Whether these controls are energy exchange, pressure reduction or simple container feeding, some final control elements are required to complete. In the existing technology, most control valves are sealed by packing, which can be used with the control valve. The service life of the valve and the up and down movement of the valve stem will cause leakage at the packing, which requires maintenance or replacement of the regulating valve, and the long-term friction between the valve core and the valve seat will cause the valve core to wear and reduce the service life. To this end, a new type of pneumatic regulating valve with bellows is proposed.

[Content of the invention]

The purpose of this utility model is to solve the problem that in the prior art, most of the regulating valves are sealed by packing, which can cause leakage at the packing according to the service life of the regulating valve and the up and down movement of the valve stem. A new type of pneumatic control valve with bellows is proposed to solve problems such as maintenance or replacement of the regulating valve.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a novel pneumatic regulating valve with bellows, comprising a valve body and a valve cover installed on the valve body; a valve seat and a guide sleeve are installed in the valve body; The valve cover is fixedly installed on the valve body by screws; a valve stem is installed in the valve cover; one end of the valve stem is provided with an external thread, and one end is provided with a valve core; a thin nut is installed on the external thread; its characteristics are: The valve core is also provided with a valve core packing groove; a valve core packing is installed in the valve core packing groove; a fixed nut block is installed on the valve core packing.

Preferably, a packing groove is also provided between the valve cover installed on the valve body and the valve stem; packing is installed in the packing groove; a packing fixing plate is installed on the packing; the packing fixing plate is fixed by screws fixed on the valve cover.

Preferably, an installation groove is provided between the valve stem and the valve cover; a bellows pipe is installed in the installation groove; the bellows pipe is installed on the valve stem; a fixing plate is installed on the top of the bellows pipe.

Preferably, the valve body is also provided with a medium inlet and a medium outlet.

The beneficial effects of the utility model are as follows: the structure of the regulating valve is simple, the wear of the valve core is reduced by installing the valve core packing on the valve core, and the bellows is installed on the valve stem to increase the sealing performance of the valve body and prevent leakage , the scope of use can also be wider.

【Description of drawings】

Figure 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial enlarged view of A of the present utility model.

Fig. 3 is a partial enlarged view of B of the present utility model.

Fig. 4 is a partial enlarged view of C of the utility model.

Legend: 1 valve body; 2 valve cover; 3 valve seat; 4 guide sleeve; 5 valve stem; 6 mounting groove; 7 bellows; 8 fixing plate; 9 packing groove; 10 packing; 11 packing fixing plate; 12 external thread ; 13 valve core; 14 thin nut; 15 medium inlet; 16 medium outlet; 17 valve core packing groove; 18 valve core packing; 19 fixed nut block.

Detailed ways

Hereinafter, we will further describe the novel pneumatic regulating valve with bellows according to the present utility model in conjunction with the accompanying drawings.

1-4, a new type of pneumatic regulating valve with bellows in this embodiment includes a valve body 1 and a valve cover 2 mounted on the valve body 1; the valve body 1 is provided with a valve seat 3 and a valve cover 2. Guide sleeve 4; the valve cover 2 is fixedly mounted on the valve body 1 by screws; the valve cover 2 is installed with a valve stem 5; one end of the valve stem 5 is provided with an external thread 12, and one end is provided with a valve core 13; A thin nut 14 is installed on the outer thread 12; it is characterized in that the valve core 13 is also provided with a valve core packing groove 17; a valve core packing 18 is installed in the valve core packing groove 17; the valve core packing A fixed nut block 19 is installed on the 18; a packing groove 9 is also provided between the valve cover 2 and the valve stem 5 installed on the valve body 1; the packing 10 is installed in the packing groove 9; A packing fixing plate 11 is installed; the packing fixing plate 11 is fixed on the valve cover 2 by screws; an installation groove 6 is arranged between the valve stem 5 and the valve cover 2; a bellows 7 is installed in the installation groove 6 The bellows 7 is installed on the valve stem 5; the top of the bellows 7 is installed with a fixed plate 8; the valve body 1 is also provided with a medium inlet 15 and a medium outlet 16.

In the present invention, the medium enters the valve body 1 from the medium inlet 15, and the valve core 13 is pushed upward by the pressure, the valve core 13 drives the valve stem 5 to move upward, the medium finally flows out from the medium outlet 16, and the medium is pushed open by The speed of the regulating valve is controlled by the distance of the valve core 13; by setting the installation groove 6 in the valve cover 2, the bellows 7 is installed in the installation groove 6, and the bellows 7 is fixed on the valve stem 5, so that the valve stem 5 can be lifted up. To the sealing effect, coupled with the original packing seal, this has a double sealing effect, preventing the leakage of the medium, and can be used in radioactive, mutated and rare and precious fluids and other occasions, increasing the use range of the control valve; The outer end of the core 13 is provided with a valve core packing groove 17, a valve core packing 18 is installed in the valve core packing groove 17, and a fixed nut block 19 is installed on the valve core packing 18, so that the valve core packing 18 is in direct contact with the valve seat 3 for friction, so as to The wear of the valve core 13 is reduced, and the service life is improved.

The above embodiment is an illustration of the present utility model, not a limitation of the present utility model. Any simple transformation scheme of the present utility model belongs to the protection scope of the present utility model.

Claims (4)

1. A novel pneumatic regulating valve with a corrugated pipe comprises a valve body (1) and a valve cover (2) arranged on the valve body (1); a valve seat (3) and a guide sleeve (4) are arranged in the valve body (1); the valve cover (2) is fixedly arranged on the valve body (1) through a screw; a valve rod (5) is arranged in the valve cover (2); one end of the valve rod (5) is provided with an external thread (12), and the other end is provided with a valve core (13); a thin nut (14) is arranged on the external thread (12); the valve is characterized in that a valve core packing groove (17) is also arranged on the valve core (13); a valve core filler (18) is arranged in the valve core filler groove (17); and a fixed nut block (19) is arranged on the valve core filler (18).

2. The novel pneumatic regulating valve with the bellows as claimed in claim 1, wherein: a packing groove (9) is also arranged between the valve cover (2) arranged on the valve body (1) and the valve rod (5); a filler (10) is arranged in the filler groove (9); a filler fixing plate (11) is arranged on the filler (10); the packing fixing plate (11) is fixed on the valve cover (2) through screws.

3. The novel pneumatic regulating valve with the bellows as claimed in claim 1, wherein: an installation groove (6) is arranged between the valve rod (5) and the valve cover (2); a corrugated pipe (7) is arranged in the mounting groove (6); the corrugated pipe (7) is arranged on the valve rod (5); and a fixing plate (8) is arranged at the top of the corrugated pipe (7).

4. The novel pneumatic regulating valve with the bellows as claimed in claim 2, wherein: the valve body (1) is also provided with a medium inlet (15) and a medium outlet (16).

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