Casting valve body of pneumatic stop valve

Abstract

The utility model discloses a casting valve body of a pneumatic stop valve, and relates to the field of stop valves. The casting valve body of the pneumatic stop valve comprises a valve body unit, a valve cover unit and a gas injection unit installed on the outer side of the valve cover unit, the valve cover unit is installed above the valve body unit, and an adjusting unit is installed in the valve cover unit. According to the casting valve body of the pneumatic stop valve, due to the fact that the bottom end of the adjusting rod is in threaded connection with the top end of the valve rod, when the bottom of the valve clack leaks water due to abrasion, a rotating rod is inserted into the valve deck unit, the rotating rod is clamped with the top end of the adjusting rod, the adjusting rod can be driven to rotate by rotating the rotating rod at the moment, and then the valve rod can move; and therefore, the valve clack is more attached to the interior of the valve body, and the water leakage condition of the valve body can be improved without disassembling the valve body unit.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pneumatic stop valve cast valve body. BACKGROUND

[0002] Pneumatic stop valve is a kind of device that realizes valve switch control by pneumatic device, its valve body is the main part of valve, responsible for accommodating the internal structure of valve, usually made of cast iron, carbon steel, stainless steel and other materials, to ensure sufficient strength and sealing.

[0003] Pneumatic stop valve is driven by air pressure to control valve flap to move when using, the contact position of valve flap and valve body inside is generally of sealing rubber material, although it has good sealing effect, but after long-term use, rubber is prone to wear, and then water leakage is prone to occur when rubber and valve body inside contact. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of pneumatic stop valve cast valve body, solve the problem that pneumatic stop valve is driven by air pressure to control valve flap to move when using, the contact position of valve flap and valve body inside is generally of sealing rubber material, although it has good sealing effect, but after long-term use, rubber is prone to wear, and then water leakage is prone to occur when rubber and valve body inside contact.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a kind of pneumatic stop valve cast valve body, including valve body unit, valve cover unit and the injection unit of installation in the outer side of valve cover unit, the valve cover unit is installed on the upper of valve body unit, and the inside of valve cover unit is equipped with adjusting unit;

[0006] The valve body unit includes:

[0007] valve body, its inside is slidably provided with valve flap;

[0008] valve stem, its bottom end is fixedly connected with valve flap, and the top end of valve stem extends towards the inside of valve cover unit;

[0009] The adjusting unit includes:

[0010] adjusting rod, rotationally arranged in the inside of valve cover unit, and the bottom end of adjusting rod is threadedly connected with the top end of valve stem;

[0011] rotating rod, inserted in valve cover unit, and with adjusting rod top end is clamped.

[0012] Preferably, the both ends of the valve body are provided with pipe joints.

[0013] Preferably, the valve cover unit includes:

[0014] The valve cover is internally slidably provided with a movable seat, and a fixing seat is arranged at the bottom of the valve cover, and a gas pressure adjusting cavity is formed between the fixing seat and the movable seat, and the gas injection unit is connected with the gas pressure adjusting cavity;

[0015] A reset spring is fixedly connected to the inner top wall of the valve cover and the movable seat.

[0016] Preferably, the top end of the valve rod is fixedly connected with an internally threaded sleeve, the adjusting rod is rotatably arranged in the interior of the movable seat, and the bottom end of the adjusting rod is fixedly connected with a threaded rod which is threadedly connected with the internally threaded sleeve.

[0017] Preferably, the top end of the adjusting rod penetrates through the movable seat and is provided with a cross slot, the top end of the rotating rod is fixedly provided with a cross block which is inserted into the cross slot.

[0018] Preferably, the top end of the valve cover is provided with a slot, and the rotating rod penetrates through the slot.

[0019] Preferably, the outer side of the rotating rod is fixedly sleeved with a limiting ring which is in abutment with the top end of the valve cover.

[0020] Preferably, the inner wall of the fixing seat is provided with a limiting slot, and the outer side of the valve rod is fixedly connected with a limiting block which is slidably arranged on the inner wall of the limiting slot.

[0021] The utility model discloses a pneumatic stop valve casting valve body, which has the following beneficial effects:

[0022] 1. The pneumatic stop valve casting valve body, the bottom end of the adjusting rod is threadedly connected with the top end of the valve rod, when the bottom of the valve disc is worn and water leakage occurs, the rotating rod is inserted into the valve cover unit, so that the rotating rod is clamped with the top end of the adjusting rod, at this time, rotating the rotating rod can drive the adjusting rod to rotate, thereby enabling the valve rod to move, and the valve disc and the interior of the valve body are more abutted, and the valve body unit does not need to be disassembled to improve the water leakage condition of the valve body.

[0023] 2. The pneumatic stop valve casting valve body, when the gas injection unit injects gas into the gas pressure adjusting cavity, the movable seat can be pushed to move vertically, and after the gas injection unit extracts the gas, the reset spring can reset the movable seat. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0026] Figure 2 It is a structural cross-sectional view of the present application.

[0027] Figure 3 It is a structural cross-sectional view of the valve cover unit of the present application.

[0028] Figure 4 It is a structural cross-sectional view of the adjusting unit of the present application.

[0029] In the figure: 1, valve body unit; 11, valve body; 12, valve flap; 13, valve stem; 14, pipe joint; 2, valve cover unit; 21, valve cover; 22, fixed seat; 23, movable seat; 24, air pressure adjusting cavity; 25, return spring; 3, gas injection unit; 4, adjusting unit; 41, adjusting rod; 42, rotating rod; 43, internally threaded sleeve; 44, threaded rod; 45, cross slot; 46, insertion slot; 47, limiting slot; 48, limiting block. DETAILED DESCRIPTION

[0030] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0031] The embodiment of the present application discloses a pneumatic stop valve cast valve body.

[0032] According to the drawings Figures 1-4 As shown in the figure, it comprises a valve body unit 1, a valve cover unit 2 and a gas injection unit 3 installed outside the valve cover unit 2, the valve cover unit 2 is installed above the valve body unit 1, and the inside of the valve cover unit 2 is installed with an adjusting unit 4;

[0033] The valve body unit 1 comprises:

[0034] The valve body 11 is internally provided with a valve flap 12 which slides;

[0035] The valve stem 13 is fixedly connected with the valve flap 12 at the bottom end, and the top end of the valve stem 13 extends towards the inside of the valve cover unit 2;

[0036] The adjusting unit 4 comprises:

[0037] An adjusting rod 41 is rotatably arranged in the valve cover unit 2, and the bottom end of the adjusting rod 41 is threadedly connected with the top end of the valve rod 13.

[0038] A rotating rod 42 is inserted into the valve cover unit 2 and is clamped with the top end of the adjusting rod 41.

[0039] In use, the gas injection unit 3 can adjust the air pressure in the valve cover unit 2, thereby moving the valve rod 13, and when the valve rod 13 moves, the valve disc 12 can move in the valve body 11, thereby opening and closing the valve body 11. When the bottom of the valve disc 12 is worn and leaks, the rotating rod 42 is inserted into the valve cover unit 2, so that the rotating rod 42 is clamped with the top end of the adjusting rod 41. At this time, rotating the rotating rod 42 can drive the adjusting rod 41 to rotate, thereby moving the valve rod 13, and the valve disc 12 is more closely attached to the inside of the valve body 11, without disassembling the valve body unit 1, the valve body leakage can be improved.

[0040] Further, the valve body 11 is provided with a pipe joint 14 at both ends, which is convenient for connecting with the pipeline outside.

[0041] In particular, the valve cover unit 2 comprises:

[0042] The valve cover 21 is provided with a fixed seat 22 at the bottom, and the inside of the valve cover 21 is slidably provided with a movable seat 23. The fixed seat 22 and the movable seat 23 form an air pressure adjusting cavity 24, and the gas injection unit 3 is in communication with the air pressure adjusting cavity 24.

[0043] The both ends of the reset spring 25 are fixedly connected with the movable seat 23 and the inner top wall of the valve cover 21.

[0044] When the gas injection unit 3 injects gas into the air pressure adjusting cavity 24, it can push the movable seat 23 to move vertically. After the gas injection unit 3 extracts the gas, the reset spring 25 can reset the movable seat 23.

[0045] In particular, the top end of the valve rod 13 is fixedly connected with an internal thread sleeve 43, the adjusting rod 41 is rotatably arranged in the inside of the movable seat 23, and the bottom end of the adjusting rod 41 is fixedly connected with a threaded rod 44 which is threadedly connected with the internal thread sleeve 43.

[0046] When the adjusting rod 41 is rotated, the threaded rod 44 is threadedly connected with the internal thread sleeve 43, so that the valve rod 13 can move vertically.

[0047] Particularly disclosed, the top end of the adjusting rod 41 passes through the movable seat 23 and is provided with a cross groove 45, the top end of the rotating rod 42 is fixedly provided with a cross block, and the cross block is inserted into the cross groove 45.

[0048] Through the cross groove 45 and the cross block, after the bottom end of the rotating rod 42 is connected with the top end of the adjusting rod 41, rotating the rotating rod 42 can drive the adjusting rod 41 to rotate.

[0049] Further, the top end of the valve cover 21 is provided with a insertion slot 46, and the rotating rod 42 penetrates through the insertion slot 46.

[0050] Through the insertion slot 46, the rotating rod 42 is conveniently inserted into the valve cover 21.

[0051] Further, the outer side of the rotating rod 42 is fixedly sleeved with a limiting ring, and the limiting ring is attached to the top end of the valve cover 21.

[0052] Through the limiting ring, the rotating rod 42 can be limited.

[0053] Further, the inner wall of the fixed seat 22 is provided with a limiting slot 47, and the outer side of the valve rod 13 is fixedly connected with a limiting block 48, and the limiting block 48 is slidingly arranged on the inner wall of the limiting slot 47.

[0054] Through the limiting slot 47 and the limiting block 48, the valve rod 13 can only move vertically and cannot be deflected.

[0055] Because the bottom end of the adjusting rod 41 is threadedly connected with the top end of the valve rod 13, when the bottom of the valve disc 12 is worn and water leakage occurs, the rotating rod 42 is inserted into the valve cover unit 2, so that the rotating rod 42 is clamped with the top end of the adjusting rod 41, at this time, rotating the rotating rod 42 can drive the adjusting rod 41 to rotate, so that the valve rod 13 can move, and the valve disc 12 is more attached to the inside of the valve body 11, without disassembling the valve body unit 1, the water leakage of the valve body can be improved.

[0056] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cast valve body of a pneumatic globe valve, comprising a valve body unit (1), a bonnet unit (2) and a gas injection unit (3) mounted on the outside of the bonnet unit (2), characterized in that: The valve cover unit (2) is installed above the valve body unit (1), and an adjusting unit (4) is installed inside the valve cover unit (2); The valve body unit (1) comprises: A valve body (11) with a valve clack (12) slidingly arranged inside; A valve rod (13) with a bottom end fixedly connected with the valve clack (12) and a top end extending towards the inside of the valve cover unit (2); The adjusting unit (4) comprises: An adjusting rod (41) rotationally arranged inside the valve cover unit (2) and with a bottom end threadedly connected with the top end of the valve rod (13); A rotating rod (42) inserted in the valve cover unit (2) and clamped with the top end of the adjusting rod (41).

2. The air operated stop valve cast body of claim 1 wherein: Both ends of the valve body (11) are provided with pipe joints (14).

3. The air operated stop valve cast body as defined in claim 1 wherein: The valve cover unit (2) comprises: A valve cover (21) with a fixed seat (22) installed at the bottom, an active seat (23) slidingly arranged inside the valve cover (21), a gas pressure adjusting cavity (24) formed between the fixed seat (22) and the active seat (23), and a gas injection unit (3) in communication with the gas pressure adjusting cavity (24); A return spring (25) with both ends fixedly connected with the active seat (23) and the inner top wall of the valve cover (21).

4. The air operated stop valve cast body of claim 3 wherein: The top end of the valve rod (13) is fixedly connected with an internally threaded sleeve (43), the adjusting rod (41) is rotationally arranged inside the active seat (23), and the bottom end of the adjusting rod (41) is fixedly connected with a threaded rod (44) threadedly connected with the internally threaded sleeve (43).

5. The air operated stop valve cast body as defined in claim 3 wherein: The top end of the adjusting rod (41) is provided with a cross slot (45) penetrating the active seat (23), the top end of the rotating rod (42) is fixedly installed with a cross block, and the cross block is inserted in the cross slot (45).

6. The air operated stop valve cast body as defined in claim 3 wherein: The top end of the valve cover (21) is provided with a slot (46), and the rotating rod (42) is arranged penetrating the slot (46).

7. The air operated stop valve cast body of claim 1 wherein: The outer side of the rotating rod (42) is fixedly sleeved with a limiting ring, and the limiting ring is in abutment with the top end of the valve cover (21).

8. The air operated stop valve cast body as defined in claim 3 wherein: The inner wall of the fixed seat (22) is provided with a limiting slot (47), and the outer side of the valve rod (13) is fixedly connected with a limiting block (48) slidingly arranged on the inner wall of the limiting slot (47).

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