Stop valve

Abstract

According to the technical scheme, the stop valve is characterized by comprising a valve body, a connecting valve is arranged on one side of the valve body; a filter screen is arranged in the connecting valve; the filter screen can filter impurities in the valve body so as to prevent the impurities from blocking the valve body after the valve body is used for a long time; when impurities on the filter screen need to be cleaned, the connecting valve can be detached to clean the filter screen; a valve rod is arranged in the valve body; a hand wheel is arranged on the valve rod; a protruding part is arranged on the valve rod; a groove is formed in the hand wheel; the protruding part is matched with the groove; the protruding part and the groove are in special shapes. When the stop valve is opened or closed, the hand wheel can be taken down from the valve rod, and therefore the valve rod can be prevented from being twisted at will. The check valve has the advantages that impurities in fluid can be cleaned conveniently, and the valve rod is prevented from being twisted at will.

Description

Technical Field

[0001] The utility model relates to the field of valves, and more specifically to a globe valve. Background Technique

[0002] A globe valve is a kind of valve, also known as a stop valve, belonging to a forced-sealing valve. By applying pressure, the sealing surface of the valve flap is closely fitted with the sealing surface of the valve seat to prevent the flow of the medium. After the globe valve is used for a long time, impurities may be generated in the valve body, resulting in the blockage of the globe valve; some globe valves are installed outdoors and the handwheel on the globe valve is not disassembled, so there is a chance that the handwheel will be randomly rotated by others, causing inconvenience.

[0003] Aiming at the deficiencies of the existing technology, the utility model provides a globe valve, which has the effects of facilitating the cleaning of impurities in the fluid and preventing the valve stem from being randomly twisted. Content of the Utility Model

[0004] To achieve the above object, the utility model provides the following technical solution: A globe valve includes a valve body, characterized in that: a connecting valve is arranged on one side of the valve body; a filter screen is arranged in the connecting valve; a valve stem is arranged in the valve body; a valve flap is arranged on the valve stem; two sealing members are further arranged in the valve body; a packing is arranged between the valve body and the valve stem; a handwheel is arranged on the valve stem; a protruding part is arranged on the valve stem; a groove is arranged on the handwheel; the protruding part is matched with the groove; both the protruding part and the groove are in special-shaped shapes.

[0005] The utility model is further arranged as follows: a first through hole is opened on one side of the connecting valve; a second through hole is opened on one side of the valve body; the first through hole and the second through hole are connected by a first screw and a first nut; a sealing ring is arranged between the connecting valve and the valve body; a third through hole is opened on one side of the connecting valve; a fourth through hole is opened on the other side of the valve body.

[0006] The utility model is further arranged as follows: a valve cover is arranged on the valve body; the valve cover is connected to the valve body by a second screw; an upper guiding part and a lower guiding part are arranged in the valve body; the upper guiding part and the lower guiding part are inclined in the valve body; a matching groove is opened on the upper guiding part and the lower guiding part; the valve flap is matched with the matching groove.

[0007] The utility model is further arranged as follows: a rod thread is arranged on the upper part of the valve stem; the lower part of the valve stem is smooth; a cover thread is arranged on the valve cover; the rod thread is matched with the cover thread.

[0008] In summary, the utility model has the following beneficial effects: a filter screen is arranged inside the connection valve; the filter screen can filter impurities in the fluid to prevent the valve body from being blocked by impurities after long-term use; when it is necessary to clean the impurities on the filter screen, the connection valve can be removed to clean the filter screen; when opening or closing the stop valve, the handwheel can be removed from the valve stem to prevent the valve stem from twisting randomly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic structural diagram of this embodiment;

[0010] Figure 2 is Figure 1 an enlarged view of part A of

[0011] Figure 3 is a schematic diagram of the protruding part and the handwheel of this embodiment;

[0012] Figure 4 is a schematic diagram of the mating groove of this embodiment.

[0013] Reference numerals: 1, valve body; 2, connection valve; 3, filter screen; 4, valve stem; 5, valve flap; 6, seal; 7, packing; 8, handwheel; 9, protruding part; 10, groove; 11, first through hole; 12, second through hole; 13, first screw; 14, first nut; 15, sealing ring; 16, third through hole; 17, fourth through hole; 18, valve cover; 19, second screw; 20, upper guiding part; 21, lower guiding part; 22, mating groove; 23, rod thread; 24, cover thread. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0015] This embodiment discloses a stop valve. As Figures 1 to 3 shown, the utility model has the effects of facilitating the cleaning of impurities in the fluid and preventing the valve stem from twisting randomly, and includes a valve body 1; a connection valve 2 is arranged on one side of the valve body 1; a filter screen 3 is arranged inside the connection valve 2; a valve stem 4 is arranged inside the valve body 1; a valve flap 5 is arranged on the valve stem 4; two seals 6 are further arranged inside the valve body 1; packing 7 is arranged between the valve body 1 and the valve stem 4; a handwheel 8 is arranged on the valve stem 4; a protruding part 9 is arranged on the valve stem 4; a groove 10 is arranged on the handwheel 8; the protruding part 9 is matched with the groove 10; both the protruding part 9 and the groove 10 are in special-shaped configurations.

[0016] By adopting the above technical solution: The filter screen 3 provided inside the connecting valve 2 filters impurities in the fluid, thereby preventing the valve body 1 from being blocked by impurities after long-term use; when it is necessary to clean the impurities on the filter screen 3, the connecting valve 2 can be removed and then the filter screen 3 can be cleaned; the sealing member 6 can play a good sealing role to prevent the fluid from entering between the two sealing members 6, thereby preventing the fluid from flowing out through the packing 7; the handwheel 8 facilitates the rotation of the valve stem 4, thereby controlling the up and down displacement of the valve flap 5 to open or close the globe valve; when it is not necessary to rotate the valve stem 4, the handwheel 8 can be removed from the protruding portion 9, thereby preventing the valve stem 4 from twisting randomly.

[0017] A first through hole 11 is provided on one side of the connecting valve 2; a second through hole 12 is provided on one side of the valve body 1; the first through hole 11 and the second through hole 12 are connected by a first screw 13 and a first nut 14; a sealing ring 15 is provided between the connecting valve 2 and the valve body 1; a third through hole 16 is provided on one side of the connecting valve 2; a fourth through hole 17 is provided on the other side of the valve body 1.

[0018] By adopting the above technical solution: The first screw 13 passes through the second through hole 12 and the first through hole 11 and then is connected with the nut, thereby making the connection between the valve body 1 and the connecting valve 2 firm; the sealing ring 15 can prevent the fluid from leaking between the connecting valve 2 and the valve body 1; the third through hole 16 enables the connecting valve 2 to be connected with an external pipeline; the fourth through hole 17 enables the valve body 1 to be connected with an external pipeline.

[0019] A valve cover 18 is provided on the valve body 1; the valve cover 18 is connected to the valve body 1 by a second screw 19; an upper guiding portion 20 and a lower guiding portion 21 are provided inside the valve body 1; the upper guiding portion 20 and the lower guiding portion 21 are inclined and located inside the valve body 1; matching grooves 22 are provided on the upper guiding portion 20 and the lower guiding portion 21; the valve flap 5 is matched with the matching grooves 22.

[0020] By adopting the above technical solution: The second screw 19 makes the connection between the valve body 1 and the valve cover 18 firm; the upper guiding portion 20 and the lower guiding portion 21 guide the fluid so that the fluid enters the valve body 1 from one side of the connecting valve 2 and flows out of the valve body 1 on the side far from the connecting valve 2; the valve flap 5 moves up and down by the rotation of the valve stem 4, and after the valve flap 5 is matched with the matching grooves 22, the fluid flow is prevented.

[0021] The upper part of the valve stem 4 has a rod thread 23; the lower part of the valve stem 4 is smooth; the valve cover 18 has a cover thread 24; the rod thread 23 is matched with the cover thread 24.

[0022] By adopting the above technical solution: the rod thread 23 cooperates with the cover thread 24 so that the valve stem 4 rotates on the valve cover 18, causing the valve stem 4 to move up and down, and further driving the valve flap 5 to move up and down; the lower part of the valve stem 4 is smooth to prevent fluid from flowing out of the gap between the valve stem 4 and the seal 6 when the valve stem 4 moves up and down.

[0023] In summary, the present utility model has the following beneficial effects: a filter screen 3 is provided in the connecting valve 2; the filter screen 3 can filter impurities in the fluid to prevent the valve body 1 from being blocked by impurities after long-term use; when it is necessary to clean the impurities on the filter screen 3, the connecting valve 2 can be removed to clean the filter screen 3; when opening or closing the stop valve, the handwheel 8 can be removed from the valve stem 4 to prevent the valve stem 4 from twisting randomly.

[0024] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A globe valve, comprising a valve body (1), characterized in that: A connecting valve (2) is provided on one side of the valve body (1); a filter screen (3) is provided inside the connecting valve (2); a valve stem (4) is provided inside the valve body (1); a valve disc (5) is provided on the valve stem (4); two sealing elements (6) are further provided inside the valve body (1); a packing (7) is provided between the valve body (1) and the valve stem (4); a handwheel (8) is provided on the valve stem (4); a protruding portion (9) is provided on the valve stem (4); a groove (10) is provided on the handwheel (8); the protruding portion (9) cooperates with the groove (10); both the protruding portion (9) and the groove (10) are in special-shaped configurations.

2. The globe valve according to claim 1, wherein: A first through hole (11) is formed on one side of the connecting valve (2); a second through hole (12) is formed on one side of the valve body (1); the first through hole (11) and the second through hole (12) are connected by a first screw (13) and a first nut (14); a sealing ring (15) is provided between the connecting valve (2) and the valve body (1); a third through hole (16) is formed on one side of the connecting valve (2); a fourth through hole (17) is formed on the other side of the valve body (1).

3. The globe valve according to claim 2, wherein: A valve cover (18) is provided on the valve body (1); the valve cover (18) is connected to the valve body (1) by a second screw (19); an upper guiding portion (20) and a lower guiding portion (21) are provided inside the valve body (1); the upper guiding portion (20) and the lower guiding portion (21) are inclined and located inside the valve body (1); a mating groove (22) is formed on the upper guiding portion (20) and the lower guiding portion (21); the valve disc (5) cooperates with the mating groove (22).

4. The globe valve according to claim 3, characterized in that: A rod thread (23) is provided on the upper part of the valve stem (4); the lower part of the valve stem (4) is smooth; a cover thread (24) is provided on the valve cover (18); the rod thread (23) cooperates with the cover thread (24).

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