Stop valve
By improving the valve disc structure of the stop valve and adopting the design of arc-shaped abutment part and inner support part, the problem of valve core deformation under medium pressure is solved, and a stronger sealing effect and extended service life are achieved.
Patent Information
- Application Number
- CN202423117436.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-17
AI Technical Summary
The valve core and valve seat of the existing stop valve are subjected to the greatest medium pressure at the moment of opening and closing, which causes material aging and reduced durability, affecting the sealing effect and service life.
A valve disc structure with an arc-shaped abutment portion and an inner support portion is designed. The inner support portion is composed of a cross reinforcing rib sheet and an arc-shaped sheet. It cooperates with the medium flow port through a guide ring groove to reduce valve disc deformation and enhance sealing strength.
Under medium pressure, the inner support part supports the valve disc to reduce deformation, improve the sealing effect, extend the service life of the valve disc, and reduce the overall pressure of opening and closing the valve.
Smart Images
Figure CN223459913U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve technical field, concretely relates to a stop valve. BACKGROUND
[0002] The stop valve is the most widely used valve, easy to manufacture, convenient to maintain, not only suitable for medium and low pressure, but also suitable for high pressure, and is widely welcomed, the closing principle of the stop valve is that the valve stem pressure makes the valve clack sealing surface and the valve port sealing surface in the valve body tightly adhere to each other, and the medium flow is prevented, the valve core and the valve seat of the commonly seen stop valve generally adopt the valve core larger than the valve seat opening to be lifted through the valve stem, and the valve core is abutted and sealed with the valve seat to cut off the medium flow, in actual use, the pressure received by the valve seat and the valve core clack is the largest in the opening and closing moment of the valve, and the main factor leading to the durability decline of the valve core clack is the corrosion of the medium and the material aging except the medium. SUMMARY
[0003] In view of the prior art, the purpose of the utility model is to provide a valve core structure capable of limiting excessive deformation of the valve clack under the medium pressure, and to obtain improved sealing effect and service life.
[0004] In order to achieve the above purpose, the utility model adopts the technical scheme that a stop valve, including the valve body with the valve seat, the valve stem and the valve clack, the valve stem is connected with the valve clack for pushing the valve clack to abut against the valve seat to seal the medium flow passage arranged in the valve body, one end of the valve clack is fixedly connected with the valve stem, the other end is provided with an arc abutment part, an inner support part is arranged below the arc abutment part, the maximum outer diameter of the arc abutment part is greater than the medium flow port arranged on the valve seat, the diameter of the inner support part is smaller than the medium flow port, and a flow guide ring groove is arranged between the inner support part and the arc abutment part, the inner support part further comprises a cross reinforcing rib, and the cross reinforcing rib is extended to connect the flow guide ring groove.
[0005] As a further setting of the above scheme, the valve clack is arranged in a circular arc concave shape and protrudes towards the medium entering direction, the abutment sealing surface of the arc abutment part is arranged in an inclined shape, and a corresponding abutment inclined surface is arranged on the valve seat.
[0006] As a further setting of the above scheme, the cross reinforcing rib of the valve clack further extends to be provided with an arc-shaped piece, the arc-shaped piece cooperates to form a cylindrical structure with a notch, and the outer surface of the arc-shaped piece is abutted and fitted with the inner hole wall of the medium flow port of the valve seat.
[0007] As a further setting of the above scheme, the valve body is further provided with a valve cover, a sealing packing and a driving part fixed with the valve stem.
[0008] As a further arrangement of the above-mentioned scheme, the front end of the valve rod is provided with a pin, and the valve rod is threadedly connected to the valve body to drive the valve disc to lift and switch to abut against the valve seat.
[0009] Beneficial effects: the stop valve of the utility model has the valve disc with the inner support setting through the improvement design compared with the prior art, in the process of closing and opening the valve, the inner support part is supported by the deformation abutting expansion of the arc abutting part under the pressure, can support the valve disc to reduce the deformation of the valve disc, enhance the sealing strength, improve the service life of the valve disc. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a stop valve structure schematic view of the utility model.
[0011] Figure 2 It is a stop valve closing state schematic view of the embodiment.
[0012] Figure 3 It is a stop valve opening state schematic view of the embodiment.
[0013] Figure 4 It is a valve disc structure schematic view of the embodiment.
[0014] Reference signs: 1, valve body;2, valve rod;21, pin;3, valve disc;31, arc abutting part;311, abutting sealing surface;32, inner support part;33, flow guide ring groove;34, cross reinforcing rib;35, arc-shaped piece;36, notch;4, valve seat;41, medium flow port;42, abutting inclined surface;5, medium flow passage;6, valve cover;7, sealing packing;8, driving member. DETAILED DESCRIPTION
[0015] In order to enable the above-mentioned purpose, features and advantages of the utility model to be more clearly understood, the utility model will be further described in detail below in combination with the drawings and specific embodiments.It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0016] As Figures 1-4 shown in a kind of stop valve, including valve body 1 with valve seat 4 setting, valve rod 2 and valve disc 3, the valve rod 2 is connected valve disc 3 for pushing valve disc 3 and abutting tightly valve seat 4 sealing medium flow passage 5 setting in valve body 1, the valve disc 3 one end is fixedly connected on valve rod 2, other end is provided with arc abutting part 31, arc abutting part 31 below is provided with inner support part 32, the maximum outer diameter of arc abutting part 31 is greater than the medium flow port 41 setting on valve seat 4, the diameter of inner support part 32 is less than medium flow port 41, and flow guide ring groove 33 is provided between inner support part 32 and arc abutting part 31, inner support part 32 also includes cross reinforcing rib 34, cross reinforcing rib 34 is extendedly connected flow guide ring groove 33 setting.
[0017] As a further arrangement of the above-mentioned solution, the valve disc 3 is arranged in a circular arc concave shape protruding towards the medium inlet direction, the abutting sealing surface 311 of the arc-shaped abutting part 31 is arranged in an inclined shape, and the valve seat 4 is correspondingly arranged with an abutting inclined surface 42, the abutting sealing surface 311 and the abutting inclined surface 42 are in sealing abutment, and the valve is opened or closed under the drive of the valve stem 2.
[0018] As a further arrangement of the above-mentioned solution, the cross-shaped reinforcing rib 34 of the valve disc 3 is further arranged with an arc-shaped piece 35, the arc-shaped piece 35 cooperates to form a cylindrical structure with a notch 36, and the outer surface of the arc-shaped piece 35 is in abutting and fitting arrangement with the inner hole wall of the medium flow port 41 of the valve seat 4.
[0019] As a further arrangement of the above-mentioned solution, the valve body 1 is further arranged with a valve cover 6, a sealing packing 7, and a driving member 8 fixed with the valve stem 2, the front end of the valve stem 2 is arranged with a pin 21, the valve stem 2 is threadedly fitted with the valve body 1 to drive the valve disc 3 to ascend and descend to switch and abut the valve seat 4, the valve body 1 of the embodiment is arranged with a large opening to process and install the inside through the valve cover 6, the valve cover 6 is arranged with a packing port, the sealing packing 7 is arranged to be sealed and locked by a pressing sleeve, a threaded sleeve is arranged on the upper part of the valve cover 6, the valve stem 2 extends out from the valve body 1 and penetrates through the threaded sleeve of the valve cover 6 and is threadedly fitted therewith, the driving member 8 is arranged on the upper end of the valve stem 2, the valve stem 2 is driven to rotate by controlling the driving member 8, the threaded fitting drive realizes the axial extension and contraction, the valve disc 3 and the valve seat 4 are approached or moved away by the extension and contraction of the valve stem 2, and the medium flow channel 5 of the stop valve is cut off or opened.
[0020] As shown in the embodiment of the stop valve, Figure 2 and Figure 3 the inside of the valve body 1 is sealed and opened and closed by the cooperation of the valve disc 3 and the valve seat 4, Figure 4 the valve disc 3 is improved to be arranged with an inner support part 32 structure, so that the bottom of the valve disc 3 is extended into the medium flow port 41, and in the process of closing the valve and opening and closing the valve, Figure 2As shown, at this time, the pressure of the medium pushes the valve disc 3, the valve disc 3 is deformed based on the pressure relief problem, and abuts against the valve seat 4 to form a seal, compared with the prior art, the valve disc 3 of the embodiment is deformed under the medium pressure, but based on the fact that the valve disc 3 extends into the medium flow port 41, through the cross reinforcing ribs 34 and the arc-shaped pieces 35, when the valve disc 3 is deformed, the cross reinforcing ribs 34 and the arc-shaped pieces 35 move with the valve disc 3, support the inner wall to unload the deformation pressure, and the upper part of the valve disc 3 normally abuts against the valve seat 4 without affecting the seal; the cross reinforcing ribs 34 of the valve disc 3 exist, so that the overall strength of the valve disc 3 is improved, and the material of the valve disc 3 itself has strong elastic force in the part not supported by the cross reinforcing ribs 34, so that excessive abutment can be obtained under the medium pressure or the pressure of the valve stem 2, so that a stronger sealing effect is formed, and damage is not easy; in addition, the arrangement of the flow guide ring groove 33 of the valve disc 3 of the embodiment reduces the overall pressure of the opening and closing valve when the valve is opened and closed.
[0021] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technology, the present application also intends to include these modifications and variations.
Claims
1. A stop valve comprising a valve body (1) provided with a valve seat (4), a valve stem (2) and a valve flap (3), wherein the valve stem (2) is connected to the valve flap (3) and is used to push the valve flap (3) against the valve seat (4) to seal a medium flow channel (5) provided in the valve body (1), characterized in that: The valve clack (3) is fixedly connected at one end to the valve stem (2), and is provided at the other end with an arc-shaped abutting portion (31), and an inner supporting portion (32) is provided below the arc-shaped abutting portion (31), the maximum outer diameter of the arc-shaped abutting portion (31) is greater than the medium flow port (41) provided on the valve seat (4), the diameter of the inner supporting portion (32) is smaller than the medium flow port (41), and a flow guide ring groove (33) is provided between the inner supporting portion (32) and the arc-shaped abutting portion (31), and the inner supporting portion (32) further comprises a cross-shaped reinforcing rib (34) extending and connected to the flow guide ring groove (33).
2. A globe valve according to claim 1, characterized in that: The valve clack (3) is provided in a circular arc concave shape protruding towards the medium entering direction, and the abutting sealing surface (311) of the arc-shaped abutting portion (31) is provided in an inclined shape, and the valve seat (4) is correspondingly provided with an abutting inclined surface (42).
3. A globe valve according to claim 1, wherein: The cross-shaped reinforcing rib (34) of the valve clack (3) is further provided with an arc-shaped piece (35), and the arc-shaped piece (35) cooperates to form a cylindrical structure with a notch (36), and the outer surface of the arc-shaped piece (35) is abuttingly fitted to the inner hole wall of the medium flow port (41) of the valve seat (4).
4. A globe valve according to claim 1, wherein: The valve body (1) is further provided with a valve cover (6), a sealing packing (7), and a driving member (8) fixed to the valve stem (2).
5. A stop valve according to claim 4, characterised in that: The front end of the valve stem (2) is provided with a pin (21), and the valve stem (2) is threadedly connected to the valve body (1) to drive the valve clack (3) to lift and switch to abut against the valve seat (4).