Self-sealing power station valve with filter screen

Abstract

The self-sealing power station valve comprises a valve body and a sealing valve seat arranged in the valve body, a filtering assembly is arranged on the inner circumferential face of the sealing valve seat in a threaded connection mode, the filtering assembly comprises a sleeve, an elastic piece, a sliding block and the filter screen, the sleeve is connected to the sealing valve seat in a threaded mode, and the elastic piece is arranged on the sealing valve seat. The elastic part is annularly arranged on the sleeve in a sleeving manner, the filter screen is tightly clamped on the inner circumferential surface of the sleeve and is close to one side of the elastic part, the sliding block is arranged on the sleeve in a sliding state, one end of the sliding block is propped against the elastic part, and the other end of the sliding block is inserted into the filter screen; according to the self-sealing power station valve with the filter screen, accumulation of impurities on the sealing face is reduced, and the effect of improving the sealing performance of the valve is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a self -sealing power station valve with filter screen. BACKGROUND

[0002] The power station valve is also called special valve for power station, is used for the pipeline of various systems of thermal power station, plays the role of cutting off or connecting pipeline medium, and suitable medium is: water, steam and the like non-corrosive medium, but the impurities in medium are easy to accumulate on the sealing surface of the valve clack in the working process of the valve, lead to the sealing surface damage, appear the problem of the sealing effect drop, and there is big security risk. CONTENT

[0003] The utility model discloses to the above -mentioned problem, propose a self -sealing power station valve with filter screen, reduce the accumulation of impurities on the sealing surface, have the effect of improving the valve sealing performance.

[0004] In order to realize above -mentioned purpose, the utility model provides the following technical scheme: a self -sealing power station valve with filter screen, including valve body and the sealing valve seat that sets up in the valve body, the inner peripheral surface on sealing valve seat is provided with filter assembly on screw thread, filter assembly includes sleeve, elastic piece, sliding block and filter screen, sleeve is connected on sealing valve seat on screw thread, elastic piece is annular shape and is set on sleeve, filter screen is clamped and is set on the inner peripheral surface of sleeve and is close to elastic piece one side, sliding block is in sliding state and is set on sleeve, one end of sliding block is abutted on elastic piece, and the other end is inserted and is set on filter screen.

[0005] By adopting above -mentioned technical scheme, when installing, filter screen is installed upwards in sleeve, when filter screen slides to one side of sliding block, sliding block is extruded, promotes sliding block to exert pressure to elastic piece and displaces to one side of sealing valve seat, forms the installation of filter screen and gives way, when filter screen continues to slide upwards until sliding block is clamped in second clamping groove, elastic piece is contracted and resets and compacts sliding block at this time, forms the limiting installation of filter screen in sleeve, finally, sleeve is screwed in sealing valve seat, realizes the installation of filter screen on sealing valve seat, reduces the accumulation of impurities on the sealing surface, has the effect of improving the valve sealing performance.

[0006] The utility model is further provided with, the side of sleeve close to sealing valve seat is provided with annular opening, elastic piece is annular shape and is clamped in annular opening, the side of annular opening close to filter screen is provided with first clamping groove, sliding block is provided with abutment and sliding part, one end of abutment is abuttingly set on elastic piece, one end of sliding part is connected abutment, and the other end extends to the side of first clamping groove and is clamped on filter screen, and the second clamping groove that is matched with sliding part is formed in filter screen.

[0007] By adopting the technical scheme, when the filter screen slides upward to one side of the first clamping groove, the elastic member is contracted and reset to press and abut the abutment part, the abutment part slides to one side of the filter screen, thereby driving the abutment part to be clamped in the second clamping groove, forming the supporting and positioning effect on the filter screen, and avoiding the phenomenon of filter screen falling off.

[0008] The abutment part is further provided with an abutment arc surface on the side of the elastic member.

[0009] By adopting the technical scheme, the abutment arc surface can form a clamping structure with the elastic member, which is beneficial to improving the stability of the elastic member and the abutment part when clamped, and further improving the stability of the structure.

[0010] The sleeve is further provided with a threaded stud, and the sealing valve seat is provided with a threaded inner wall matched with the threaded stud, and the sleeve is screwed on the sealing valve seat through the threaded stud.

[0011] By adopting the technical scheme, the threaded stud is screwed on the threaded inner wall, improving the tightness of the sleeve in the sealing valve seat, and further enhancing the stability of the structure.

[0012] The abutment part and the first clamping groove are clamped with a plurality of sealing rings, one end of the sealing ring is tightly arranged on the abutment part, and the other end is tightly arranged on one side of the first clamping groove.

[0013] By adopting the technical scheme, the sealing ring can play a buffering role when the abutment part is inserted into the first clamping groove, reducing the wear of the structure.

[0014] The sliding part is provided with a V-shaped accommodation inclined surface on the side of the second clamping groove.

[0015] By adopting the technical scheme, the accommodation inclined surface can avoid the phenomenon of structural interference between the sliding part and the second clamping groove. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is an enlarged schematic view of the utility model A.

[0018] In the figure: 1, valve body; 2, sealing valve seat; 3, filter assembly; 4, sleeve; 5, elastic member; 8, sliding block; 9, filter screen; 10, annular opening; 11, first clamping groove; 12, abutment part; 13, sliding part; 14, second clamping groove; 15, abutment arc surface; 16, threaded stud; 17, threaded inner wall; 18, sealing ring; 19, accommodation inclined surface. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Embodiment: as shown in the drawings Figure 1 and 2 A self-sealing power station valve with a filter screen, comprising a valve body 1 and a sealing valve seat 2 arranged inside the valve body 1, a filter assembly 3 is threadedly connected to the inner circumferential surface of the sealing valve seat 2, the filter assembly 3 comprises a sleeve 4, an elastic member 5 (specifically a spring), a plurality of sliding blocks 8 (specifically T-shaped and arranged in a ring array in a ring-shaped opening 10) and a filter screen 9, the sleeve 4 is threadedly connected to the sealing valve seat 2, the elastic member 5 is annularly arranged on the sleeve 4, the filter screen 9 is clamped on the inner circumferential surface of the sleeve 4 and close to one side of the elastic member 5, the sliding blocks 8 are arranged in a sliding state on the sleeve 4, one end of the sliding blocks 8 abuts against the elastic member 5, and the other end is inserted into the filter screen 9, the filter screen 9 is installed upward in the sleeve 4 during installation, and when the filter screen 9 slides to one side of the sliding blocks 8, the sliding blocks 8 are pressed, so that the sliding blocks 8 are displaced to one side of the sealing valve seat 2 under the pressure of the elastic member 5, thereby forming installation space for the filter screen 9, when the filter screen 9 continues to slide upward until the sliding blocks 8 are clamped in the second clamping groove 14, the elastic member 5 is contracted and reset to press the sliding blocks 8, thereby forming the limiting installation of the filter screen 9 in the sleeve 4, and finally the sleeve 4 is screwed in the sealing valve seat 2, thereby achieving the installation of the filter screen 9 on the sealing valve seat 2, reducing the accumulation of impurities on the sealing surface, and improving the sealing performance of the valve.

[0021] Embodiment: as shown in the drawings Figure 1 and the drawings Figure 2As shown, the sleeve 4 is provided with an annular opening 10 on one side close to the sealing valve seat 2, the elastic member 5 is clamped in the annular opening 10, the annular opening 10 is provided with a first clamping groove 11 on one side close to the filter screen 9, the sliding block 8 is provided with an abutting portion 12 and a sliding portion 13 (an integral structure), one end of the abutting portion 12 is tightly arranged on the elastic member 5, one end of the sliding portion 13 is connected to the abutting portion 12, and the other end extends to one side of the first clamping groove 11 and is clamped on the filter screen 9, the filter screen 9 is provided with a second clamping groove 14 matched with the sliding portion 13, when the filter screen 9 slides upward to one side of the first clamping groove 11, the elastic member 5 is reset to tightly abut the abutting portion 12, forming the sliding of the abutting portion 12 to one side of the filter screen 9, thereby driving the abutting portion 12 to be clamped in the second clamping groove 14, forming the support and positioning effect of the filter screen 9, avoiding the phenomenon of falling off of the filter screen 9.

[0022] As shown in the accompanying drawings, Figure 2 As shown, the abutting portion 12 is provided with an abutting arc surface 15 on one side close to the elastic member 5, the abutting arc surface 15 is provided in a semicircular shape, and the abutting arc surface 15 can form a clamping structure with the elastic member 5, which is beneficial to improve the stability of the clamping of the elastic member 5 and the abutting portion 12, and further improve the stability of the structure.

[0023] As shown in the accompanying drawings, Figure 2 As shown, the sleeve 4 is provided with a threaded stud 16 (an integral structure), the sealing valve seat 2 is provided with a threaded inner wall 17 matched with the threaded stud 16, the sleeve 4 is screwed on the sealing valve seat 2 through the threaded stud 16, and the threaded stud 16 is screwed on the threaded inner wall 17, which improves the tightness of the sleeve 4 in the sealing valve seat 2 and further enhances the stability of the structure.

[0024] As shown in the accompanying drawings, Figure 2 As shown, a plurality of sealing rings 18 (specifically made of rubber, and symmetrically provided with two) are clamped between the abutting portion 12 and the first clamping groove 11, one end of the sealing ring 18 is tightly arranged on the abutting portion 12, and the other end is tightly arranged on one side of the first clamping groove 11, the sealing ring 18 can play a buffering role when the abutting portion 12 is inserted into the first clamping groove 11, reducing the wear of the structure.

[0025] As shown in the accompanying drawings, Figure 2 As shown, the sliding portion 13 is provided with a V-shaped accommodation inclined surface 19 on one side close to the second clamping groove 14, which can avoid the phenomenon of structural interference between the sliding portion 13 and the second clamping groove 14.

[0026] In the utility model, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only the relationship words determined for the convenience of narrating the structural relationship of various components or elements of the utility model, and are not specific to any component or element in the utility model, and cannot be understood as the limitation of the utility model.

Claims

1. A self-sealing power plant valve with a strainer, comprising a valve body (1) and a sealing seat (2) arranged inside the valve body (1), characterized in that: The filter assembly (3) is arranged on the inner circumferential surface of the sealing valve seat (2) through screwing, and comprises a sleeve (4), an elastic member (5), a plurality of sliding blocks (8) and a filter screen (9).

2. A self-sealing power plant valve with a strainer according to claim 1, characterized in that An annular opening (10) is formed on the sleeve (4) near the sealing valve seat (2), the elastic member (5) is clamped in the annular opening (10) in an annular shape, a first clamping groove (11) is formed on the annular opening (10) near the filter screen (9), an abutting portion (12) and a sliding portion (13) are arranged on the sliding block (8), one end of the abutting portion (12) is abuttingly arranged on the elastic member (5), one end of the sliding portion (13) is connected to the abutting portion (12), the other end of the sliding portion (13) extends towards the first clamping groove (11) and is clamped on the filter screen (9), and a second clamping groove (14) matched with the sliding portion (13) is formed on the filter screen (9).

3. A self-sealing power plant valve with strainer according to claim 2, characterized in that: The abutting portion (12) is provided with an abutting arc surface (15) towards the elastic member (5), and the abutting arc surface (15) is arranged in a semicircular shape.

4. A self-sealing power plant valve with strainer according to claim 1, characterized in that: A threaded stud (16) is arranged on the sleeve (4), a threaded inner wall (17) matched with the threaded stud (16) is arranged on the sealing valve seat (2), and the sleeve (4) is screwed on the sealing valve seat (2) through the threaded stud (16).

5. A self-sealing power plant valve with strainer according to claim 2, characterized in that: A plurality of sealing rings (18) are arranged between the abutting portion (12) and the first clamping groove (11), one end of the sealing ring (18) is pressingly arranged on the abutting portion (12), and the other end of the sealing ring (18) is pressingly arranged on one side of the first clamping groove (11).

6. A self-sealing power plant valve with strainer as claimed in claim 2, wherein: The sliding portion (13) is provided with a V-shaped accommodation inclined surface (19) towards the second clamping groove (14).

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