Axial misalignment on-off valve

Abstract

The application belongs to the technical field of stop valves, and discloses an axial misalignment conduction stop valve, which comprises a stop valve body, the inner cavity of the stop valve body is movably connected with a valve column block, the inner cavity of the valve column block is movably connected with a valve rod body, the top of the inner cavity of the stop valve body is movably connected with a limiting ring column and a disc, and the top of the inner cavity of the middle part of the valve rod body is fixedly connected with an L-shaped inclined block. The cooperation between the valve column block, the valve rod body, the L-shaped inclined block and the clamping block protrusion and other structures enables the device to prevent the rusting of the valve rod from causing the valve rod to be unable to rotate, enables the L-shaped inclined block to cooperate with the inclined clamping groove, enables the clamping block protrusion to move towards the side close to the spring sheet, and enables the device to be completely closed when the valve column block rotates by 180 degrees, thereby preventing the rusting of the threads on the valve rod from causing the valve rod to be unable to be normally used.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of stop valves, and particularly relates to a stop valve with axial misalignment conduction. BACKGROUND

[0002] A stop valve, also called a stop gate, is one of the most widely used valves, and is popular because of small friction between sealing surfaces in the opening and closing process, good durability, small opening height, easy manufacturing, and convenient maintenance, and can be used in high, medium and low pressure pipelines. The closing principle of the stop valve is that the valve stem pressure makes the valve disc sealing surface and the valve seat sealing surface tightly adhere to each other to prevent the medium from flowing.

[0003] The existing stop valve is provided with a hand wheel, a valve rod, a valve body and a valve disc, the hand wheel and the valve rod are connected, the valve rod is installed on the valve body through threads, the valve disc is arranged at the bottom of the valve rod, the valve rod is driven to rotate by rotating the hand wheel, the valve rod is driven to move downward through the cooperation of threads while rotating, and the valve disc is driven to move downward to block the valve port, the structure is easy to cause rust of threads after long-time use, the threads are difficult to rotate, and the normal work of the stop valve is difficult to control, and therefore the stop valve with axial misalignment conduction is provided to solve the problems in the background art. SUMMARY

[0004] To solve the problems in the background art, the application provides a stop valve with axial misalignment conduction, which solves the problem that the threads on the valve rod of the stop valve are rusted to cause the valve rod to be unable to rotate.

[0005] To achieve the above object, the application provides the following technical scheme: a stop valve with axial misalignment conduction, comprising a stop valve body, an inner cavity of the stop valve body is movably connected with a valve column block, an inner cavity of the valve column block is movably connected with a valve rod body, a top of an inner cavity of the stop valve body is movably connected with a limiting ring column and a disc, a top of an inner cavity of the valve rod body is fixedly connected with an L-shaped inclined block, one side of an inner cavity of the disc is movably connected with a clamping block protrusion, one side of the clamping block protrusion is fixedly connected with a spring sheet, a slanting clamping groove is formed in the middle of the top of the protrusion, a tooth clamping groove is annularly and equiangularly formed on the upper part of the inner part of the stop valve body, a first arc-shaped port is formed on the upper side of one side of the valve column block, a second arc-shaped port is formed on the lower side of the side of the valve column block away from the first arc-shaped port, and a limiting structure is movably connected with the inner cavity of the valve rod body.

[0006] Preferably, the limiting structure comprises a connecting vertical rod, the outer surface of the connecting vertical rod is movably connected with the inner cavity of the valve rod body, the bottom of the connecting vertical rod is fixedly connected with an arc-shaped abutment, the top of the arc-shaped abutment is fixedly connected with a convex column in a ring shape and at equal angles, the bottom of the stop valve valve body is provided with an arc-shaped groove in a ring shape and at equal angles, the middle of the top of the arc-shaped abutment is fixedly connected with a spline shaft, the top of the spline shaft is fixedly connected with a limiting column, the outer surface of the limiting column is sleeved with a first elastic spring, and the top of the outer surface of the connecting vertical rod is sleeved with a second elastic spring.

[0007] Preferably, the inner cavities at the two ends of the stop valve valve body are connected with external pipelines respectively, and the second arc-shaped port and the first arc-shaped port are connected with input pipelines and output pipelines respectively.

[0008] Preferably, the disc is movably connected above the inner cavity of the stop valve valve body, the side of the clamping block convex block away from the convex block is matched with the toothed clamping groove, and the end of the spring sheet away from the clamping block convex block is fixedly connected with the disc.

[0009] Preferably, one end of the bottom of the L-shaped inclined block is matched with the inclined clamping groove, and the limiting ring column is located directly above the disc.

[0010] Preferably, the middle of the outer surface of the valve rod body is square in cross section, the outer surface of the valve rod body is matched with the inner cavities of the disc and the limiting ring column respectively, one end of the top of the valve rod body penetrates through the top of the stop valve valve body and extends to the outside of the stop valve valve body, and the top of the outer surface of the valve rod body is in the form of a ring handle.

[0011] Preferably, the top and the bottom of the second elastic spring are fixedly connected with the connecting vertical rod and the valve column block respectively, and the outer surface of the convex column is matched and clamped with the inner cavities of the arc-shaped grooves respectively.

[0012] Preferably, the outer surface of the spline shaft is movably clamped with the inner cavity of the connecting vertical rod, the outer surface of the limiting column is movably connected with the inner cavity of the stop valve valve body, and the top and the bottom of the first elastic spring are in contact with the first elastic spring and the connecting vertical rod respectively.

[0013] Preferably, the main body of the stop valve valve body is formed by injection molding, and a layer of stainless steel is compounded on the surface.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. This invention, through the cooperation of structures such as the valve stem block, valve stem body, L-shaped inclined block, and locking protrusion, enables the device to prevent the valve stem from rusting and thus preventing it from rotating. When the operator presses down on the valve stem body, the valve stem body moves the L-shaped inclined block downwards, causing it to engage with the inclined groove. This causes the locking protrusion to move closer to the spring plate, thus releasing the outer side of the locking protrusion from the toothed groove. Subsequently, rotating the valve stem body causes the limiting ring, disc, and valve stem block to rotate, thereby reducing the openings of the second arc-shaped port and the first arc-shaped port with the input and output pipes, respectively. When the valve stem block rotates 180 degrees, the device is completely closed, thus preventing the valve stem from rusting and thus preventing it from malfunctioning.

[0016] 2. This invention, through the cooperation of the connecting vertical rod, arc-shaped abutment, protruding column, and arc-shaped groove, prevents the valve column from rotating under the impact of water flow, thus preventing valve body leakage. As the valve stem moves downwards, the connecting vertical rod also moves downwards, which in turn drives the arc-shaped abutment to move the protruding column downwards, causing the protruding column to disengage from the inner cavity of the arc-shaped groove. At this point, the protruding column is no longer engaged with the arc-shaped groove. When the device is closed and the pressure on the valve stem is released, the second elastic spring causes the protruding column to reset and re-engage into the arc-shaped groove. Thus, the cooperation of the spline shaft, connecting vertical rod, valve stem body, and valve column block prevents the valve column block from rotating. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a front cross-sectional view of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 This is a schematic diagram of the top cross-sectional structure of the disk in this invention and its enlarged view;

[0022] Figure 6 This is a schematic diagram of the top cross-sectional structure of the arc-shaped groove in the present invention;

[0023] Figure 7 This is an exploded view of the intermediate column block of the present invention.

[0024] In the diagram: 1. Gate valve body; 2. Valve stem block; 3. Valve stem body; 4. Limiting ring column; 5. L-shaped inclined block; 6. Disc; 7. Clamping block protrusion; 8. Spring plate; 9. Inclined groove; 10. Toothed groove; 11. First arc-shaped opening; 12. Second arc-shaped opening; 13. Restriction structure; 131. Connecting vertical rod; 132. Arc-shaped abutment block; 133. Protruding column; 134. Arc-shaped groove; 135. Splined shaft; 136. Restriction column; 137. First elastic spring; 138. Second elastic spring. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 7 As shown, the present invention provides an axially misaligned shut-off valve, comprising a shut-off valve body 1, a valve column block 2 movably connected to the inner cavity of the shut-off valve body 1, a valve stem body 3 movably connected to the inner cavity of the valve column block 2, a limiting ring column 4 and a disc 6 movably connected to the top of the inner cavity of the shut-off valve body 1, an L-shaped inclined block 5 fixedly connected to the top of the middle inner cavity of the valve stem body 3, a locking protrusion 7 movably connected to one side of the inner cavity of the disc 6, a spring plate 8 fixedly connected to one side of the locking protrusion 7, an inclined groove 9 formed in the middle of the top of the protrusion 7, a toothed groove 10 formed at equal angles in the upper part of the inner cavity of the shut-off valve body 1, a first arc-shaped opening 11 formed above one side of the valve column block 2, a second arc-shaped opening 12 formed below the side of the valve column block 2 away from the first arc-shaped opening 11, and a limiting structure movably connected to the middle of the inner cavity of the valve stem body 3. 13. The main body of the valve body 1 of the shut-off valve is injection molded and has a stainless steel layer laminated on the exposed surface. When the operator presses down on the valve stem body 3, the valve stem body 3 drives the L-shaped inclined block 5 to move downward, so that the L-shaped inclined block 5 cooperates with the inclined groove 9, thereby causing the locking block protrusion 7 to move closer to the spring plate 8. This causes the outer side of the locking block protrusion 7 to disengage from the toothed groove 10. Then, rotating the valve stem body 3 will cause the limiting ring column 4, the disc 6 and the valve column block 2 to rotate, thereby reducing the openings of the second arc-shaped port 12 and the first arc-shaped port 11 with the input and output pipes, respectively. When the valve column block 2 rotates 180 degrees, the device is completely closed, thus preventing the valve stem from rusting and causing it to malfunction.

[0027] It is worth noting that the valve body 1 of the gate valve is made by injection molding, which reduces the production cost of the valve body. At the same time, the design of cladding the valve body with a layer of stainless steel compensates for the low strength of the plastic valve body.

[0028] like Figure 2 , Figure 4 , Figure 6 , Figure 7 As shown, the limiting structure 13 includes a connecting vertical rod 131, the outer surface of which is movably connected to the inner cavity of the valve stem body 3. An arc-shaped abutment 132 is fixedly connected to the bottom of the connecting vertical rod 131, and a protruding post 133 is fixedly connected to the top of the arc-shaped abutment 132 at equal angles. An arc-shaped groove 134 is formed at equal angles on the bottom of the valve body 1. A splined shaft 135 is fixedly connected to the middle of the top of the arc-shaped abutment 132, and a limiting post 136 is fixedly connected to the top of the splined shaft 135. A first elastic spring 137 is sleeved on the outer surface of the limiting post 136, and a second elastic spring 138 is sleeved on the top of the outer surface of the connecting vertical rod 131. The valve stem body 13 is connected to the valve stem body 3. As the valve stem 3 moves downward, the connecting vertical rod 131 also moves downward, which in turn drives the arc-shaped abutment 132 to move the protruding column 133 downward, causing the protruding column 133 to disengage from the inner cavity of the arc-shaped groove 134. At this time, the protruding column 133 is released from its engagement with the arc-shaped groove 134. When the device is closed, the pressure on the valve stem body 3 is released. Due to the elastic force of the second spring 138, the protruding column 133 will reset and be locked into the arc-shaped groove 134. At this time, through the cooperation of the spline shaft 135, the connecting vertical rod 131, the valve stem body 3 and the valve column block 2, the rotation of the valve column block 2 is prevented.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7As shown, the inner cavities of the two ends of the stop valve body 1 are connected with external pipelines respectively, the second arc-shaped port 12 and the first arc-shaped port 11 are communicated with input pipelines and output pipelines respectively, the disc 6 is movably connected above the inner cavity of the stop valve body 1, the outer side of the clamping block protrusion 7 is matched and clamped with the tooth clamping groove 10, the end of the spring sheet 8 away from the clamping block protrusion 7 is fixedly connected with the disc 6, the bottom end of the L-shaped inclined block 5 is matched with the inclined clamping groove 9, the limiting ring column 4 is located directly above the disc 6, the middle part of the outer surface of the valve rod body 3 is square in cross section, the outer surface of the valve rod body 3 is matched with the inner cavities of the disc 6 and the limiting ring column 4 respectively, one end of the top of the valve rod body 3 penetrates through the top of the stop valve body 1 and extends to the outside of the stop valve body 1, and the top end of the outer surface of the valve rod body 3 is annular handle-shaped.

[0030] As shown in Figure 2 , Figure 4 , Figure 6 , Figure 7 As shown, the top and bottom of the second elastic spring 138 are fixedly connected with the connecting vertical rod 131 and the valve column block 2 respectively, the outer surface of the protruding column 133 is matched and clamped with the inner cavities of the arc-shaped grooves 134 respectively, the outer surface of the spline shaft 135 is movably clamped with the inner cavity of the connecting vertical rod 131, the outer surface of the limiting column 136 is movably connected with the inner cavity of the stop valve body 1, and the top and bottom of the first elastic spring 137 are in contact with the first elastic spring 137 and the connecting vertical rod 131 respectively; through the arc-shaped design of the arc-shaped grooves 134, when the valve rod body 3 is rotated to the required position, the protruding column 133 can be more easily clamped into the inside of the arc-shaped grooves 134 at this time.

[0031] The working principle and use process of the present application are as follows:

[0032] First, the operator presses the valve rod body 3 downward to make the valve rod body 3 drive the L-shaped inclined block 5 to move downward, so that the L-shaped inclined block 5 is matched with the inclined clamping groove 9, thereby making the clamping block protrusion 7 move to the side close to the spring sheet 8, so that the outer side of the clamping block protrusion 7 is disengaged from the clamping of the tooth clamping groove 10, and then rotating the valve rod body 3 will make the limiting ring column 4, the disc 6 and the valve column block 2 rotate, thereby making the second arc-shaped port 12 and the first arc-shaped port 11 respectively reduce the pipe openings of the input pipelines and the output pipelines, when the valve column block 2 rotates one hundred and eighty degrees, the device is completely closed at this time, thereby preventing the rusting of the threads on the valve rod from causing the valve rod to be unable to be normally used;

[0033] When the valve rod body 3 moves downward, the connecting vertical rod 131 also moves downward, and the arc-shaped block 132 and the protruding column 133 also move downward, so that the protruding column 133 is separated from the inner cavity of the arc-shaped groove 134. At this time, the protruding column 133 is separated from the arc-shaped groove 134. When the device is closed, the pressing on the valve rod body 3 is released. At this time, the protruding column 133 is reset and clamped into the arc-shaped groove 134 due to the elastic force of the second elastic spring 138. At this time, the cooperation of the spline shaft 135, the connecting vertical rod 131, the valve rod body 3 and the valve column block 2 prevents the valve column block 2 from rotating.

[0034] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An axial misalignment pilot operated shut-off valve characterized by: The utility model provides a kind of stop valve, including stop valve body (1); The inner cavity of the stop valve body (1) is movably connected with a valve column block (2), the inner cavity of the valve column block (2) is movably connected with a valve stem body (3), the top of the inner cavity of the stop valve body (1) is movably connected with a limiting ring column (4) and a disc (6), the top of the inner cavity of the valve stem body (3) is fixedly connected with an L-shaped inclined block (5), one side of the inner cavity of the disc (6) is movably connected with a clamping block protrusion (7), one side of the clamping block protrusion (7) is fixedly connected with a spring sheet (8); The top of the clamping block protrusion (7) is provided with an inclined clamping groove (9) in the middle, the inside of the stop valve body (1) is provided with a toothed clamping groove (10) in the upper part, the outer side of the clamping block protrusion (7) can be matched with the toothed clamping groove (10) for clamping, the upper side of one side of the valve column block (2) is provided with a first arc-shaped opening (11), the lower side of the side of the valve column block (2) away from the first arc-shaped opening (11) is provided with a second arc-shaped opening (12), the inner cavity of the valve stem body (3) is movably connected with a limiting structure (13). The limiting structure (13) comprises a connecting vertical rod (131), the outer surface of the connecting vertical rod (131) is movably connected with the inner cavity of the valve stem body (3), the bottom of the connecting vertical rod (131) is fixedly connected with an arc-shaped abutting block (132), the top of the arc-shaped abutting block (132) is fixedly connected with a protruding column (133) in a ring shape at equal angles, the bottom of the stop valve body (1) is provided with an arc-shaped recess (134) in a ring shape at equal angles, the middle of the top of the arc-shaped abutting block (132) is fixedly connected with a spline shaft (135), the top of the spline shaft (135) is fixedly connected with a limiting column (136), the outer surface of the limiting column (136) is sleeved with a first elastic spring (137), the top of the outer surface of the connecting vertical rod (131) is sleeved with a second elastic spring (138), the top and bottom of the second elastic spring (138) are fixedly connected with the connecting vertical rod (131) and the valve column block (2) respectively, the outer surface of the protruding column (133) is matched with the inner cavity of the arc-shaped recess (134) for clamping.

2. The stop valve according to claim 1, characterized by: The inner cavities of the two ends of the stop valve body (1) are respectively connected with external pipelines, the second arc-shaped opening (12) and the first arc-shaped opening (11) are respectively connected with input pipelines and output pipelines.

3. The stop valve according to claim 1, characterized by: The disc (6) is movably connected above the inner cavity of the stop valve body (1), one end of the spring sheet (8) away from the clamping block protrusion (7) is fixedly connected with the disc (6).

4. The shut-off valve according to claim 1, characterized in that: One end of the bottom of the L-shaped inclined block (5) is matched with the inclined clamping groove (9), the limiting ring column (4) is located directly above the disc (6).

5. The shut-off valve according to claim 1, characterized in that: The middle of the outer surface of the valve stem body (3) is in a square shape in cross section, the outer surface of the valve stem body (3) is matched with the inner cavities of the disc (6) and the limiting ring column (4) respectively, one end of the top of the valve stem body (3) penetrates through the top of the stop valve body (1) and extends to the outside of the stop valve body (1), one end of the top of the outer surface of the valve stem body (3) is in a ring-shaped handle shape.

6. The shut-off valve according to claim 1, characterized in that: The outer surface of the spline shaft (135) is movably connected with the inner cavity of the connecting vertical rod (131), the outer surface of the limiting column (136) is movably connected with the inner cavity of the stop valve body (1), and the top and bottom of the first elastic spring (137) are respectively in contact with the first elastic spring (137) and the connecting vertical rod (131).

7. The stop valve according to any one of claims 1 to 6, characterized by: The main body of the stop valve body (1) is formed by injection molding, and a stainless steel layer is compounded on the surface.

Images