Reset spring reset control valve

Abstract

The utility model discloses a reset control valve with a reset spring, which belongs to the technical field of control valves, comprises a control valve main body, a bonnet component, a valve rod component and a valve plug component, and is characterized in that the control valve main body comprises a valve body, a valve seat is arranged in the valve body, the bonnet component comprises a bonnet main body I or a bonnet main body II, and the bonnet main body I or the bonnet main body II is arranged on the valve plug component. The first bonnet body or the second bonnet body is connected into the valve body, the portion, making contact with the valve body, of the first bonnet body or the second bonnet body is provided with a stepped groove, a first sealing groove is formed in the first bonnet body, a bonnet sealing ring is arranged in the first sealing groove, and the bonnet sealing ring abuts against the inner wall of the valve body. According to the utility model, by arranging simple structures such as the valve seat, the valve bonnet sealing ring, the valve rod sealing ring, the valve plug sealant, the rubber pad and the metal gasket I, not only is the effect of controlling flow achieved, but also the safe sealing effect is achieved, so that the control valve has the advantages of good performance and excellent price.

Description

TECHNICAL FIELD

[0001] The utility model belongs to control valve technical field, concretely relates to a reset spring reset control valve. BACKGROUND

[0002] The existing reset spring reset control valve usually adopts hard sealing or soft sealing mode, the sealing property of the valve is poor in hard sealing mode, and the valve can realize good sealing effect in soft sealing mode.

[0003] The reset spring reset control valve of hard sealing or soft sealing on the market is very complex in structure at present, and the product has many parts, the manufacturing cost is high, and the sealing reliability is poor, therefore a reset spring reset control valve is required to solve the above problems. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing a reset spring reset control valve to solve the problems in the above background.

[0005] In order to realize the above object, the utility model provides the following technical scheme: a reset spring reset control valve, including control valve main part, bonnet subassembly, valve rod subassembly and valve plug subassembly, the control valve main part includes valve body, is equipped with valve seat in the valve body;

[0006] The bonnet subassembly includes bonnet main body one or bonnet main body two, the bonnet main body one or bonnet main body two is connected in the valve body, the part of bonnet main body one or bonnet main body two and valve body contact is equipped as ladder groove, the first sealing groove is seted up in the bonnet main body one, the first sealing groove is equipped with bonnet sealing ring, the bonnet sealing ring and the inner wall of valve body abut;

[0007] The valve rod subassembly includes valve rod main body one or valve rod main body two, the top of valve rod main body two is equipped with the ring, the bottom of valve rod main body two is equipped with riveting site, the valve rod main body one and valve rod main body two all are equipped with two second sealing grooves, two second sealing grooves all are equipped with valve rod sealing ring, two valve rod sealing rings and the inside of bonnet abut;

[0008] The valve plug subassembly includes valve plug main body one or valve plug main body two or rubber sealing valve plug, the bottom of rubber sealing valve plug is overlapped with metal gasket two, the upper inside of rubber sealing valve plug is equipped with the check ring, the check ring and the ladder groove of valve rod main body two abut, the metal gasket two is fixed through the riveting of riveting site, the valve plug main body one or valve plug main body two is connected with the bottom end of valve rod main body one, the valve plug main body one is connected with valve plug sealing glue, the valve plug main body two is equipped with recess, and the recess is equipped with rubber pad and metal gasket one.

[0009] As a preferred scheme, the valve rod main body one is slidably connected in the bonnet main body.

[0010] As a preferred scheme, the valve rod body one is sleeved with a reset spring, and two ends of the reset spring are connected with the valve rod body one and the valve cap assembly respectively.

[0011] As a preferred scheme, the rubber pad and the metal gasket one are overlapped on the upper surface and the lower surface of the groove on the far side, and are overlapped on the near side.

[0012] As a preferred scheme, the metal gasket one is arranged below the rubber pad, and the metal gasket one and the rubber pad are both circular in shape.

[0013] As a preferred scheme, the valve rod sealing ring and the valve cap sealing ring are both O-shaped sealing rings.

[0014] As a preferred scheme, the valve plug body one or the valve plug body two is arranged directly above the valve seat.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a valve seat, valve cap sealing ring, valve rod sealing ring, valve plug sealing rubber, rubber pad and metal gasket one are arranged, which are simple in structure, can control flow, have safe sealing effect, have good performance and excellent price advantage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the cross section structure schematic diagram of the front view solid of the utility model;

[0018] Figure 2 It is the cross section structure schematic diagram of the front view solid of the utility model embodiment one;

[0019] Figure 3 It is the structure schematic diagram of the utility model embodiment one explosion solid;

[0020] Figure 4 It is the cross section structure schematic diagram of the front view solid of the utility model embodiment two;

[0021] Figure 5 It is the cross section structure schematic diagram of the front view solid of the utility model embodiment three;

[0022] Figure 6 It is the structure schematic diagram of the utility model embodiment three local solid explosion;

[0023] Figure 7 It is the structure schematic diagram of the front view solid of the utility model embodiment four.

[0024] In the figure: 1, control valve body; 11, valve body; 12, valve seat; 2, bonnet assembly; 201, bonnet body one; 202, first sealing groove; 203, bonnet sealing ring; 211, bonnet body two; 3, valve stem assembly; 301, valve stem body one; 311, valve stem body two; 312, collar; 313, riveting site; 32, second sealing groove; 33, valve stem sealing ring; 4, return spring; 5, valve plug assembly; 501, valve plug body one; 502, valve plug sealing glue; 511, valve plug body two; 512, groove; 513, rubber pad; 514, metal gasket one; 521, rubber sealing valve plug; 522, retaining ring; 523, metal gasket two. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with examples.

[0026] The following examples are used to illustrate the utility model, but cannot be used to limit the protection scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and simple improvement of the method of the utility model under the concept of the utility model belongs to the range required to be protected by the utility model.

[0027] Example one;

[0028] Please refer to Figures 1-7 The utility model provides a kind of return spring reset control valve, including control valve body 1, bonnet assembly 2, valve stem assembly 3 and valve plug assembly 5, control valve body 1 includes valve body 11, valve body 11 is equipped with valve seat 12, by setting valve body 11, valve body 11 direct access section is equipped with the internal thread of being supplied with connecting pipeline, upper portion is equipped with the external thread of being supplied with the connection of actuator;

[0029] Bonnet assembly 2 includes bonnet body one 201, bonnet body one 201 is connected in valve body 11, the part of bonnet body one 201 and valve body 11 contact is equipped as ladder groove, by setting bonnet body one 201 and valve body 11, bonnet body one 201 and valve body 11 cooperation step can form sealing, and bonnet body one 201 can be sealed by the gap between bonnet sealing ring 203 and valve body 11 and bonnet body one 201;

[0030] First sealing groove 202 is set in bonnet body one 201, first sealing groove 202 is equipped with bonnet sealing ring 203, bonnet sealing ring 203 and the inner wall of valve body 11 abut, by setting first sealing groove 202 and bonnet sealing ring 203, first sealing groove 202 is used to place bonnet sealing ring 203;

[0031] The valve stem assembly 3 comprises a valve stem body one 301, two second sealing grooves 32 are formed in the valve stem body one 301, and two valve stem sealing rings 33 are arranged in the two second sealing grooves 32; the two valve stem sealing rings 33 abut against the inside of the bonnet, the second sealing groove 32 is used for placing the valve stem sealing ring 33 by arranging the second sealing groove 32 and the valve stem sealing ring 33;

[0032] The valve plug assembly 5 comprises a valve plug body one 501, the valve plug body one 501 is connected with the bottom end of the valve stem body one 301, and a valve plug sealing rubber 502 is connected outside the valve plug body one 501; the material of the valve plug sealing rubber 502 is rubber material by arranging the valve plug sealing rubber 502;

[0033] The valve stem body one 301 is slidingly connected in the bonnet body, a return spring 4 is sleeved outside the valve stem body one 301, and the two ends of the return spring 4 are connected with the valve stem body one 301 and the bonnet assembly 2 respectively;

[0034] The valve stem sealing ring 33 and the bonnet sealing ring 203 are both O-shaped sealing rings;

[0035] The valve plug body one 501 is arranged directly above the valve seat 12, the valve seat 12 and the valve plug assembly 5 are matched with each other to seal the valve body 11 by arranging the valve seat 12;

[0036] Embodiment two:

[0037] Embodiment two is proposed based on embodiment one,

[0038] The bonnet assembly 2 comprises a bonnet body two 211, the bonnet body two 211 is connected in the valve body 11, the part of the bonnet body two 211 in contact with the valve body 11 is arranged as a stepped groove, the bonnet body two 211 and the valve body 11 are matched to form a seal by arranging the bonnet body two 211 and the valve body 11;

[0039] Embodiment three:

[0040] Embodiment three is proposed based on embodiment two, the valve plug assembly 5 comprises a valve plug body two 511, the valve plug body two 511 is connected with the bottom end of the valve stem body one 301, a groove 512 is formed in the valve plug body two 511, and a rubber pad 513 and a metal gasket one 514 are arranged in the groove 512;

[0041] The rubber pad 513 and the metal gasket one 514 are away from each other on one side and are lapped with the upper surface and the lower surface of the groove 512, and are lapped on the other side close to each other;

[0042] The metal gasket one 514 is arranged below the rubber pad 513, and the shapes of the metal gasket one 514 and the rubber pad 513 are both circular;

[0043] The valve plug body 2 511 is located directly above the valve seat 12;

[0044] Example 4:

[0045] Based on Embodiment 1, Embodiment 4 is proposed. The valve stem assembly 3 includes a valve stem body 2 311. The valve stem body 2 311 has a retaining ring 312 at the top and a riveting part 313 at the bottom. Two second sealing grooves 32 are opened in the valve stem body 2 311. By setting the retaining ring 312, the retaining ring 312 can replace the stepped platform at the top of the valve stem body 1 301.

[0046] The valve plug assembly 5 includes a rubber sealing valve plug 521, with a metal gasket 523 overlapping the bottom of the rubber sealing valve plug 521. A retaining ring 522 is provided inside the upper part of the rubber sealing valve plug 521. The retaining ring 522 abuts against the stepped groove of the valve stem body 311. The metal gasket 523 is fixed by riveting at the riveting part 313. The retaining ring 522 is used to block the rubber sealing valve plug 521.

[0047] By setting a metal gasket 523, the riveted metal gasket 523 can fix the rubber sealing valve plug 521 between it and the retaining ring 522.

[0048] The working principle and usage process of this utility model are as follows: When the control valve needs to be used, the upper part of the valve body 11 is connected to the external actuator, the external actuator is connected to the valve stem body 301, the external actuator drives the valve stem body 301 to move downward in the valve cap assembly 2, the return spring 4 contracts, the downward moving valve stem body 301 drives the valve plug assembly 5 to move downward, and the downward moving valve plug assembly 5 contacts the valve seat 12.

[0049] During this process, the valve cap sealing ring 203 and the first sealing groove 202 can seal the gap between the valve cap body 1 201 and the valve body 11, and the valve stem sealing ring 33 and the second sealing groove 32 can seal the gap between the valve stem body 1 301 and the valve cap body 1 201 or the valve cap body 2 211.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A return spring reset control valve comprising a control valve body (1), a bonnet assembly (2), a valve stem assembly (3) and a valve plug assembly (5), characterized by: The control valve body (1) comprises a valve body (11) provided with a valve seat (12) therein; The valve cap assembly (2) comprises a valve cap body one (201) or a valve cap body two (211), the valve cap body one (201) or the valve cap body two (211) is connected in the valve body (11), the part of the valve cap body one (201) or the valve cap body two (211) and the valve body (11) is provided as a stepped groove, the valve cap body one (201) is provided with a first sealing groove (202) therein, the first sealing groove (202) is provided with a valve cap sealing ring (203) therein, the valve cap sealing ring (203) is in abutment with the inner wall of the valve body (11); The valve stem assembly (3) comprises a valve stem body one (301) or a valve stem body two (311), the top of the valve stem body two (311) is provided with a clamping ring (312), the bottom of the valve stem body two (311) is provided with a riveting part (313), the valve stem body one (301) and the valve stem body two (311) are both provided with two second sealing grooves (32) therein, the two second sealing grooves (32) are both provided with a valve stem sealing ring (33), and the two valve stem sealing rings (33) are in abutment with the inside of the valve cap. The valve plug assembly (5) comprises a valve plug body one (501) or a valve plug body two (511) or a rubber sealing valve plug (521), the bottom of the rubber sealing valve plug (521) is overlapped with a metal gasket two (523), the upper inside of the rubber sealing valve plug (521) is provided with a check ring (522), the check ring (522) is in abutment with the stepped groove of the valve stem body two (311), the metal gasket two (523) is fixed through riveting of the riveting part (313), the valve plug body one (501) or the valve plug body two (511) is connected with the bottom end of the valve stem body one (301), the valve plug body one (501) is externally connected with a valve plug sealing glue (502), the valve plug body two (511) is provided with a recess (512) therein, and the recess (512) is provided with a rubber pad (513) and a metal gasket one (514).

2. A return spring return control valve according to claim 1, characterized in that: The valve stem body one (301) is slidingly connected in the valve cap body.

3. A return spring return control valve according to claim 1, wherein: The valve stem body one (301) is sleeved with a return spring (4), and the two ends of the return spring (4) are connected with the valve stem body one (301) and the valve cap assembly (2) respectively.

4. A return spring return control valve according to claim 1, wherein: The rubber pad (513) and the metal gasket one (514) are away from each other on one side and are overlapped with the upper surface and the lower surface of the recess (512), and the rubber pad (513) and the metal gasket one (514) are overlapped on the side close to each other.

5. A return spring return control valve according to claim 1, wherein: The metal gasket one (514) is arranged below the rubber pad (513), and the metal gasket one (514) and the rubber pad (513) are both circular in shape.

6. A return spring return control valve according to claim 1, wherein: The valve stem sealing ring (33) and the valve cap sealing ring (203) are both O-shaped sealing rings.

7. A return spring return control valve according to claim 1 wherein: The valve plug body one (501) or the valve plug body two (511) is arranged directly above the valve seat (12).

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