Anti-scouring stop valve

Abstract

The utility model provides an anti-scouring stop valve, which relates to the technical field of valves and comprises a stop valve body, a wear-resistant sleeve is mounted on the inner side of the stop valve body, a group of stable structures matched with bolts are mounted on the upper portion of the stop valve body, and each stable structure is composed of a cover plate, a support frame, a locking bolt and a positioning bolt. A transverse rotating hole is formed in the upper portion of the supporting frame. A stepped groove, a buffer block, a flow control hole and a wear-resistant sleeve are arranged in the stop valve body, the stepped groove, the buffer block, the flow control hole and the wear-resistant sleeve are matched with one another to achieve the liquid buffering effect, the impact force of liquid on the sealing valve clack is reduced, and the sealing ring is arranged to achieve the effect of further sealing the liquid; the sealing service life of the sealing valve clack to liquid is prolonged, the abrasion-resistant sleeve makes slight contact with the sealing valve clack, the abrasion-resistant sleeve is independently arranged so that the abrasion-resistant sleeve can be conveniently and independently replaced after being abraded, and the cost that an existing stop valve body needs to be integrally replaced is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an anti-scouring stop valve. Background Art

[0002] At present, stop valves are used in boilers and steam turbines to achieve the effect of medium cutoff. In order to extend the service life of the stop valve, due to its valve structure, the valve disc and valve seat are easily worn after being eroded by high-pressure fluid for a long time, thereby causing internal leakage of the valve. Therefore, an anti-scouring stop valve is urgently needed to solve the above problem.

[0003] Combined with the above, it is found that the stop valve has the following deficiencies when used:

[0004] The first disadvantage of the stop valve is that the medium directly washes the valve disc and the valve seat after entering the valve body, and the sealing surface between the valve disc and the valve seat is easily worn, thereby reducing the sealing effect of the stop valve, and the valve body needs to be replaced as a whole after it is worn, which increases the maintenance cost of the valve body;

[0005] The second disadvantage of the stop valve is the high risk of leakage, especially when the valve is used for a long time or a large number of times, the internal parts are prone to wear and aging, which can easily lead to leakage at the connection between the threaded rod and the valve body;

[0006] The third disadvantage of the stop valve is that the operating mechanism and valve are bulky and heavy. Currently, operators directly turn the threaded rod to open and close the valve, which brings a great burden to the operators. Utility Model Content

[0007] The utility model discloses an anti-scour stop valve. The stop valve body does not need to be installed. A wear-resistant sleeve, a support frame, a locking bolt, a threaded rod, a sealing valve disc, a driving shaft, and a reinforcing ring are assembled on the stop valve body in sequence. The stop valve body is installed at a position where liquid cutoff is required. The flow control of the liquid is achieved by rotating the driving shaft to control the lifting of the sealing valve disc.

[0008] In a first aspect of the present disclosure, an erosion-resistant stop valve is provided, specifically comprising: a stop valve body, a wear-resistant sleeve is installed at the inner position of the stop valve body, a group of stabilizing structures are installed at the upper position of the stop valve body in cooperation with bolts, the stabilizing structure is composed of a cover plate, a support frame, a locking bolt and a positioning bolt, a horizontal rotating hole is opened at the upper position of the support frame, a driving shaft is inserted into the rotating hole, a threaded rod is installed between the support frame and the cover plate, and a group of reinforcing rings are installed at the upper position of the cover plate.

[0009] Furthermore, the stop valve body is provided with an inclined buffer block at the bottom of the inner side, the buffer block is arranged at the position of the water inlet hole, the stop valve body is provided with a group of stepped grooves on the inner side, and the stop valve body is provided with a vertical flow control hole in the middle position of the inner side.

[0010] Furthermore, the wear-resistant sleeve is provided with a stabilizing ring at the upper position, the stop valve body is provided with a hidden groove corresponding to the stabilizing ring at the upper position, and the stabilizing ring is installed inside the hidden groove.

[0011] Furthermore, the cover plate is installed above the stop valve body in conjunction with a group of bolts. A support frame is provided at the upper position of the cover plate. A vertical threaded hole is opened at the upper position of the support frame. The threaded rod passes through the inside of the threaded hole. A vertical plane is provided on the basis of the outer side of the threaded rod. A horizontal positioning bolt is installed at the position of the threaded hole.

[0012] Furthermore, the threaded rod is provided with a smooth rod at the bottom, a sealing valve flap is provided at the bottom of the smooth rod, a sealing block is provided at the bottom of the sealing valve flap, a sealing ring is provided on the outer side of the sealing block, and the inner structure of the flow control hole corresponds to the sealing valve flap and the sealing block.

[0013] Furthermore, a hand wheel is installed at one end of the driving shaft, a small diameter bevel gear is installed at the other end of the driving shaft, and a large diameter bevel gear is also installed at the upper position of the threaded rod, and the two bevel gears are meshed with each other.

[0014] Furthermore, the reinforcement ring has a circular sealing groove at the upper position, and a sealing ring is provided at the bottom position of the reinforcement ring, and the sealing groove and the sealing ring correspond to each other.

[0015] Furthermore, the reinforcement ring at the top is provided with a chamfer at the upper position, and a locking bolt is installed on both sides of the support frame, and the locking bolt corresponds to the chamfer of the reinforcement ring.

[0016] Furthermore, the cover plate has a sliding hole corresponding to the threaded rod in the middle, the threaded rod passes through the inside of the sliding hole, a stabilizing sleeve is provided above the sliding hole, and the reinforcing ring at the bottom is installed inside the stabilizing sleeve.

[0017] The utility model provides an anti-scouring stop valve, which has the following beneficial effects:

[0018] A stepped groove, a buffer block, a flow control hole and a wear-resistant sleeve are arranged inside the stop valve body. The stepped groove, the buffer block, the flow control hole and the wear-resistant sleeve cooperate with each other to achieve the effect of liquid buffering and reduce the impact force of the liquid on the sealing valve disc. A sealing ring is arranged at the bottom of the sealing valve disc. The sealing ring achieves the effect of further sealing the liquid and prolongs the sealing life of the sealing valve disc to the liquid.

[0019] The wear-resistant sleeve is arranged to be in slight contact with the sealing valve disc. The separate arrangement of the wear-resistant sleeve is convenient for its separate replacement after wear, thereby reducing the cost of the current stop valve body that needs to be replaced as a whole. A set of reinforcement rings is arranged on the outside of the threaded rod, and the reinforcement ring can further seal the connection position of the cover plate and the threaded rod, thereby effectively avoiding water seepage at the connection position of the cover plate and the threaded rod.

[0020] A transverse drive shaft is provided to cooperate with a set of bevel gears to realize the labor-saving driving of the threaded rod, and a positioning bolt is provided to realize the effect of locking the position of the threaded rod, thereby effectively preventing the threaded rod from rotating due to accidental collision or natural factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0022] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0023] In the attached picture:

[0024] Figure 1 A schematic diagram showing the shaft side structure of the stop valve of the present application after assembly;

[0025] Figure 2 This application shows Figure 1 A schematic diagram of the axle side structure from a rear perspective;

[0026] Figure 3 The schematic diagram of the cut-off main structure of the stop valve of the present application is shown;

[0027] Figure 4 This application shows Figure 3 Schematic diagram of the structure after the sealing valve disc moves downward;

[0028] Figure 5 An axial schematic diagram of the stop valve split structure of the present application is shown;

[0029] Figure 6 This application shows Figure 4 A schematic diagram of the axle side structure from an upward angle;

[0030] Figure 7 This application shows Figure 4 A is an enlarged structural diagram of FIG.

[0031] Reference numerals list

[0032] 1. Stop valve body; 101. Buffer block; 102. Flow control hole;

[0033] 2. Wear-resistant sleeve;

[0034] 3. Stable structure; 301. Cover plate; 302. Support frame; 303. Locking bolt; 304. Positioning bolt;

[0035] 4. Threaded rod; 401. Sealing valve disc;

[0036] 5. Drive shaft;

[0037] 6. Strengthening ring. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Example 1: Please refer to Figures 1 to 7 :

[0040] The utility model proposes an anti-scour stop valve, comprising: a stop valve body 1, a wear-resistant sleeve 2 is installed at the inner side of the stop valve body 1, a group of stabilizing structures 3 are installed at the upper position of the stop valve body 1 in cooperation with bolts, the stabilizing structure 3 is composed of a cover plate 301, a support frame 302, a locking bolt 303 and a positioning bolt 304, the support frame 302 is provided with a transverse rotation hole at the upper position, a driving shaft 5 is inserted into the rotating hole, the rotating hole realizes the effect of stabilizing the driving shaft 5 transversely, so that the driving shaft 5 can only rotate in a circle, a threaded rod 4 is installed between the support frame 302 and the cover plate 301, The threaded rod 4 is provided with a polished rod at the bottom, and a sealing valve disc 401 is provided at the bottom of the polished rod. The sealing valve disc 401 is provided with a sealing block at the bottom, and a sealing ring is provided on the basis of the outer side of the sealing block. The inner structure of the flow control hole 102 corresponds to the sealing valve disc 401 and the sealing block. When the sealing block of the sealing valve disc 401 moves to the inside of the flow control hole 102, the sealing valve disc 401 cooperates with the sealing block and the sealing ring to seal the flow control hole 102, so as to achieve the effect of water flow cutoff inside the stop valve body 1. The setting of the sealing block and the sealing ring can enhance the sealing effect of the sealing valve disc 401.

[0041] In the embodiments of the present disclosure, reference Figures 1 to 7 As shown,

[0042] The cover plate 301 is installed on the top of the stop valve body 1 with a set of bolts. A support frame 302 is provided at the top of the cover plate 301. A vertical threaded hole is provided at the top of the support frame 302. The threaded rod 4 passes through the inside of the threaded hole. The support frame 302 cooperates with the threaded hole to achieve the threaded positioning effect of the threaded rod 4. The threaded rod 4 is provided with a vertical plane on the basis of the outer side surface. A horizontal positioning bolt 304 is installed at the position of the threaded hole. When the plane of the threaded rod 4 moves to the position of the positioning bolt 304, the positioning bolt 304 is rotated to contact the plane. The positioning bolt 304 achieves the effect of locking the position of the threaded rod 4, effectively preventing the threaded rod 4 from rotating due to accidental collision or natural factors. The stop valve body 1 is provided with an inclined buffer block 101 at the bottom of the inner side. The buffer block 101 is arranged at the position of the water inlet. The buffer block 101 buffers the impact force of the liquid. The stop valve body 1 is provided with a group of stepped grooves on the inner side. The stepped grooves further buffer the liquid, effectively reducing the direct impact of the liquid on the sealing valve disc 401. The stop valve body 1 is provided with a vertical flow control hole 102 at the middle position of the inner side.

[0043] In the embodiments of the present disclosure, reference Figures 1 to 7 As shown,

[0044] A hand wheel is installed at one end of the driving shaft 5, and a small diameter bevel gear is installed at the other end of the driving shaft 5. A large diameter bevel gear is also installed at the upper position of the threaded rod 4. The two bevel gears are meshed with each other. With the cooperation of the bevel gears, the threaded rod 4 can be rotated effortlessly by turning the hand wheel. A set of slide grooves is provided between the threaded rod 4 and the large diameter bevel gear. With the cooperation of the slide grooves, the threaded rod 4 can effectively move up and down. The large diameter bevel gear has a rotating groove at the upper position. The support frame 302 is provided with a stabilizing plate at the upper position. The end of the stabilizing plate extends to the inside of the rotating groove. The stabilizing plate achieves the effect of stabilizing the large diameter bevel gear up and down.

[0045] In the embodiments of the present disclosure, reference Figures 1 to 7 As shown,

[0046] The wear-resistant sleeve 2 is provided with a stabilizing ring at the upper position, and the stop valve body 1 is provided with a hidden groove corresponding to the stabilizing ring at the upper position. The stabilizing ring is installed inside the hidden groove. The wear-resistant sleeve 2 is firmly installed inside the stop valve body 1 in cooperation with the stabilizing ring. When the sealing valve disc 401 is in the open state, the liquid flows into the inside of the stop valve body 1. At this time, the liquid flushes the sealing valve disc 401 through the wear-resistant sleeve 2. The flushing effect of the liquid on the valve seat and the sealing valve disc 401 is limited, thereby reducing the impact force of the liquid on the stop valve body 1.

[0047] In the embodiments of the present disclosure, reference Figures 1 to 7 As shown,

[0048] A set of reinforcing rings 6 are installed at the upper position of the cover plate 301. The reinforcing ring 6 has a circular sealing groove at the upper position. A sealing ring is provided at the bottom position of the reinforcing ring 6. The sealing groove and the sealing ring correspond to each other. When a set of reinforcing rings 6 are stacked, the sealing ring will extend to the inside of the sealing groove. At this time, the reinforcing ring 6 can effectively further seal the connection position between the cover plate 301 and the threaded rod 4, effectively avoiding water seepage at the connection position between the cover plate 301 and the threaded rod 4. The top reinforcing ring 6 has a chamfer at the upper position. The support frame 302 is divided into A locking bolt 303 is installed separately. The locking bolt 303 corresponds to the chamfer of the reinforcement ring 6. After the reinforcement ring 6 is installed to the outside of the threaded rod 4, the locking bolt 303 is rotated. At this time, with the cooperation of the chamfer, the locking bolt 303 can achieve the effect of tightening the reinforcement ring 6. The cover plate 301 has a sliding hole corresponding to the threaded rod 4 in the middle position. The threaded rod 4 passes through the inside of the sliding hole. A stabilizing sleeve is provided above the sliding hole. The reinforcement ring 6 at the bottom is installed inside the stabilizing sleeve. The stabilizing sleeve can achieve the effect of stabilizing the installation position of the reinforcement ring 6.

[0049] Embodiment 2, based on embodiment 1, refers to Figures 1 to 7 As shown, a group of wave-shaped buffer grooves can be provided at the bottom of the wear-resistant sleeve 2, and the buffer grooves can further buffer the impact force of the liquid.

[0050] Embodiment 3, based on embodiment 1, refer to Figures 1 to 7 As shown, the outer side of the sealing valve disc 401 is in slight contact with the inner wall of the wear-resistant sleeve 2. The separate arrangement of the wear-resistant sleeve 2 is convenient for separate replacement after wear, thereby reducing the cost of overall replacement of the current stop valve body 1.

[0051] The working principle of this embodiment:

[0052] When installing the stop valve, first install the sealing valve disc 401 and the threaded rod 4 on the inner side of the stop valve body 1, then install the wear-resistant sleeve 2 on the inner side of the stop valve body 1, and install the cover plate 301 on the top of the stop valve body 1 with a set of bolts. At this time, the wear-resistant sleeve 2 is stabilized under the action of pressure, so that the threaded rod 4 passes through the threaded hole on the top of the support frame 302, and a set of reinforcement rings 6 are installed on the outer side of the threaded rod 4. The locking bolts 303 are rotated to achieve the tightening of the reinforcement ring 6, and the threaded rod 4 is stabilized. The drive shaft 5 is installed at the rotating hole position of the support frame 302, and a set of bevel gears are installed at the ends of the threaded rod 4 and the drive shaft 5 to complete the assembly of the stop valve;

[0053] When using the stop valve, install it at the position where liquid flow control is required. The installation steps of the stop valve still use the current installation steps. The sealing valve flap 401 is controlled to rise and fall by turning the hand wheel at one end of the drive shaft 5. After the sealing valve flap 401 rises, the stop valve body 1 opens, and the liquid flows inside the stop valve body 1. The hand wheel is turned in the opposite direction, and the sealing valve flap 401 moves to the position of the flow control hole 102, completing the liquid cutoff inside the stop valve body 1. Then, the positioning bolt 304 is turned to lock the threaded rod 4.

[0054] In this article, there are a few points to note:

[0055] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0056] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0057] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An anti-scour stop valve, comprising: A stop valve body (1), a stabilizing structure (3) and a reinforcing ring (6); characterized in that the stabilizing structure (3) comprises: a cover plate (301), a support frame (302), a locking bolt (303) and a positioning bolt (304); a set of stabilizing structures (3) are installed in an upper position of the stop valve body (1) in conjunction with the bolts; A wear-resistant sleeve (2) is installed at the inner side of the stop valve body (1); a horizontal rotation hole is opened at the upper position of the support frame (302); a driving shaft (5) is inserted into the rotation hole; a threaded rod (4) is installed between the support frame (302) and the cover plate (301); and a group of reinforcement rings (6) are installed at the upper position of the cover plate (301).

2. The anti-scour stop valve according to claim 1, characterized in that: The stop valve body (1) is provided with an inclined buffer block (101) at the bottom of the inner side, the buffer block (101) is arranged at the position of the water inlet hole, the stop valve body (1) is provided with a group of stepped grooves on the inner side, and the stop valve body (1) is provided with a vertical flow control hole (102) at the middle position of the inner side.

3. The anti-scour stop valve according to claim 1, characterized in that: The wear-resistant sleeve (2) is provided with a stabilizing ring at the upper position, and the stop valve body (1) is provided with a hidden groove corresponding to the stabilizing ring at the upper position, and the stabilizing ring is installed inside the hidden groove.

4. The anti-scour stop valve according to claim 1, characterized in that: The cover plate (301) is installed above the stop valve body (1) in cooperation with a group of bolts. A support frame (302) is provided at the upper position of the cover plate (301). A vertical threaded hole is provided at the upper position of the support frame (302). The threaded rod (4) passes through the inside of the threaded hole. A vertical plane is provided on the outer side of the threaded rod (4). A horizontal positioning bolt (304) is installed at the position of the threaded hole.

5. The anti-scour stop valve according to claim 1, characterized in that: The threaded rod (4) is provided with a polished rod at the bottom, a sealing valve flap (401) is provided at the bottom of the polished rod, a sealing block is provided at the bottom of the sealing valve flap (401), a sealing ring is provided on the outer side of the sealing block, and the inner side structure of the flow control hole (102) corresponds to the sealing valve flap (401) and the sealing block.

6. The anti-scour stop valve according to claim 1, characterized in that: A hand wheel is installed at one end of the drive shaft (5), and a small-diameter bevel gear is installed at the other end of the drive shaft (5). A large-diameter bevel gear is also installed at the upper position of the threaded rod (4). The two bevel gears are meshed with each other, and a set of sliding grooves is provided between the threaded rod (4) and the large-diameter bevel gear.

7. The anti-scour stop valve according to claim 1, characterized in that: The reinforcing ring (6) is provided with a circular sealing groove at the upper position, and a sealing ring is provided at the bottom position of the reinforcing ring (6), and the sealing groove and the sealing ring correspond to each other.

8. The anti-scour stop valve according to claim 1, characterized in that: The reinforcement ring (6) at the top is provided with a chamfer at the upper position, and a locking bolt (303) is installed on both sides of the support frame (302), and the locking bolt (303) corresponds to the chamfer of the reinforcement ring (6).

9. The anti-scour stop valve according to claim 1, characterized in that: The cover plate (301) has a sliding hole corresponding to the threaded rod (4) at the middle position, the threaded rod (4) passes through the inside of the sliding hole, a stabilizing sleeve is provided above the sliding hole, and the reinforcing ring (6) at the bottom is installed inside the stabilizing sleeve.

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