Crystal-resistant c-type ball valve seat

Abstract

The utility model provides a kind of crystallization-resistant C type ball valve seat, comprising: substrate, the substrate surface inner side fixedly connected partition cylinder, partition cylinder outer circular surface fixedly connected sealing layer, and substrate surface symmetry connects buffer cylinder, and buffer rod one end is slidably connected in buffer cylinder by main spring, and the other end of buffer rod fixedly connected fixed plate, fixed plate fixedly connected in the back of sealing plate, while the front of sealing plate fixedly connected positioning ring, sealing ring is fixedly connected in the front of sealing plate by positioning ring, and installation groove is set up in sealing ring surface outer side, and the side of installation groove and the surface of mounting plate are all set up through-hole, and the position corresponding to through-hole is set up mounting hole on the front of sealing plate. The utility model cooperates substrate, buffer cylinder, main spring, buffer rod and sealing plate, so that the valve seat has corresponding elastic compensation mechanism, which can assist to enhance the sealing property of the contact surface between the valve seat and the valve core, and further enhance the crystallization-resistant effect of the valve seat.

Description

Technical Field

[0001] This utility model relates to the field of ball valve seat technology, specifically to a C-type ball valve seat resistant to crystallization. Background Technology

[0002] Currently, the C-type ball valve is a special type of ball valve. The valve core of a C-type ball valve has a C-shaped structure. This shape results in a relatively small contact area between the valve core and the valve seat, requiring less operating torque when rotating the valve core, making operation easier and more flexible. Furthermore, the C-shaped valve core can guide the flow of the medium, making the flow smoother and reducing energy loss during the flow process. However, during use, the valve seat surface of a C-type ball valve is prone to crystallization due to the combined effects of medium properties (corrosiveness, viscosity), thermodynamic conditions (temperature fluctuations), equipment design (materials, structure), and operation and maintenance (cleanliness, parameter control). This crystallization can affect the normal use of the C-type ball valve. However, the overall structure of the valve seat in common C-type ball valves is simple and lacks a corresponding elastic compensation mechanism. When crystals accumulate between the valve seat and the valve core contact surface, the sealing surface cannot fit tightly, causing damage to the sealing surface and leading to media leakage. Simultaneously, when the sealing surface wears down, the sealing effect between the valve seat and the valve core also decreases, resulting in a shorter service life for the valve seat. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a crystallization-resistant C-type ball valve seat is provided to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, a crystallization-resistant C-type ball valve seat is provided, comprising: a base plate, a partition cylinder fixedly connected to the inner side of the base plate surface, a sealing layer fixedly connected to the outer arc surface of the partition cylinder, and a buffer cylinder symmetrically connected to the base plate surface. One end of a buffer rod is slidably connected to the buffer cylinder via a main spring, and the other end of the buffer rod is fixedly connected to a fixing plate. The fixing plate is fixedly connected to the back of a sealing plate, and a positioning ring is fixedly connected to the front of the sealing plate. The sealing ring is fixedly connected to the front of the sealing plate via the positioning ring. An installation groove is opened on the outer side of the sealing ring surface, and through holes are opened on the side of the installation groove and the surface of the installation plate. An installation hole is opened on the front of the sealing plate corresponding to the position of the through hole, and a long bolt passes through the through hole and is screwed into the installation hole.

[0005] Preferably, the substrate has an annular structure, the partition cylinder fixedly connected to the surface of the substrate has a cylindrical structure, and the sealing layer fixedly connected to the outer side of the partition cylinder has a cylindrical structure. At the same time, the outer side of the partition cylinder is attached to the inner side of the sealing plate through the sealing layer.

[0006] Preferably, multiple sets of buffer cylinders are fixedly connected around the surface of the substrate at equal intervals in the circumferential direction, and all sets of buffer cylinders are cylindrical in shape, while the axial section of the buffer cylinder is C-shaped, and through holes are uniformly opened on the side of the buffer cylinder.

[0007] Preferably, the buffer rod has a cylindrical structure, the axial section of the buffer rod has a T-shaped structure, and the size of the embedded end of the buffer rod is adapted to the size of the inner cavity of the buffer cylinder, while the size of the embedded end of the buffer rod is larger than the size of the other end of the buffer rod.

[0008] Preferably, the fixing plate has a circular structure, and the surface of the fixing plate is connected to the buffer rod corresponding to the position of the buffer cylinder. Multiple sets of through holes are opened at equal intervals around the circumference of the surface of the fixing plate. The through holes and the buffer rod are staggered. At the same time, bolts pass through the through holes to fix the screw holes opened in the sealing plate.

[0009] Preferably, the sealing plate has a circular ring structure, and the positioning ring fixedly connected to the front of the sealing plate has a circular ring structure. Both the inner and outer sides of the positioning ring are provided with protrusions, and the axial section of the positioning ring has an umbrella-shaped structure, while the edges of the positioning ring have an arc-shaped structure.

[0010] Preferably, the sealing ring has an overall annular structure, the opening end of the inner side of the sealing ring has a spherical structure, and the mounting groove on the surface of the sealing ring has an annular structure. The size of the mounting groove and the mounting plate are matched, and the positioning groove is opened on the surface of the sealing ring relative to the position of the positioning ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: through the cooperation of the base plate, buffer cylinder, main spring, buffer rod and sealing plate, the valve seat has a corresponding elastic compensation mechanism, which can help enhance the sealing effect of the sealing surface when crystals accumulate between the valve seat and the valve core contact surface, and enhance the sealing performance between the valve seat and the valve core contact surface, thereby helping to enhance the valve seat's resistance to crystallization. At the same time, when the sealing ring at the valve seat sealing surface is worn, the elastic compensation mechanism can also help enhance the sealing effect of the sealing surface, thereby helping to extend the service life of the valve seat. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a front view schematic diagram of the sealing ring according to an embodiment of the present utility model.

[0014] Figure 3 This is a rear view schematic diagram of the sealing plate according to an embodiment of the present utility model.

[0015] Figure 4 This is an embodiment of the present utility model. Figure 1 Enlarged diagram of point A.

[0016] In the diagram: 1. Base plate; 2. Buffer cylinder; 3. Buffer rod; 4. Separator cylinder; 5. Sealing layer; 6. Fixing plate; 7. Sealing plate; 8. Sealing ring; 9. Positioning ring; 10. Mounting plate; 11. Mounting groove; 12. Positioning groove; 13. Mounting hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1 to 4 As shown, this utility model provides a C-type ball valve seat resistant to crystallization, comprising: a base plate 1, a partition cylinder 4 fixedly connected to the inner side of the surface of the base plate 1, a sealing layer 5 fixedly connected to the outer arc surface of the partition cylinder 4, a buffer cylinder 2 symmetrically connected to the surface of the base plate 1, and a buffer rod 3 having one end slidably connected to the buffer cylinder 2 via a main spring, while the other end of the buffer rod 3 is fixedly connected to a fixing plate 6, the fixing plate 6 being fixedly connected to the back of a sealing plate 7, and a positioning ring 9 fixedly connected to the front of the sealing plate 7, a sealing ring 8 being fixedly connected to the front of the sealing plate 7 via the positioning ring 9, and an installation groove 11 being opened on the outer side of the surface of the sealing ring 8, through holes being opened on the side of the installation groove 11 and the surface of the mounting plate 10, and a mounting hole 13 being opened on the front of the sealing plate 7 corresponding to the position of the through hole, and a long bolt passing through the through hole and screwing into the mounting hole 13.

[0019] In this embodiment, when the C-type ball valve needs to be closed, the valve core abuts against the sealing ring 8 on the valve seat surface. This causes the sealing ring 8, sealing plate 7, fixing plate 6, and buffer rod 3 to move towards the base plate 1. The main spring inside the buffer cylinder 2 is then compressed by the buffer rod 3. When the valve core closes the C-type ball valve directly against the valve seat, the compressed main spring pushes the buffer rod 3 to reset. The buffer rod 3 then pushes the sealing plate 7 and sealing ring 8 to reset synchronously, ensuring that the sealing surface of the sealing ring 8 tightly adheres to the surface of the valve core, thereby enhancing the valve's sealing performance. The sealing performance at the contact surface between the seat and the valve core is such that even if some crystals remain on the sealing surface of the sealing ring 8, the crystals will be embedded in the sealing ring 8 under the push of the main spring, buffer rod 3 and sealing plate 7, thereby reducing the destructive effect of crystals on the sealing surface between the valve seat and the valve core, enhancing the valve seat's resistance to crystallization, and when the sealing surface of the sealing ring 8 experiences corresponding wear, the elastic compensation mechanism of the valve seat can also enhance the tightness of the fit with the valve core, thereby helping to enhance the sealing effect of the sealing surface and effectively extending the service life of the valve seat.

[0020] In a preferred embodiment, the substrate 1 has an annular structure, the partition cylinder 4 fixedly connected to the surface of the substrate 1 has a cylindrical structure, and the sealing layer 5 fixedly connected to the outer side of the partition cylinder 4 has a cylindrical structure. At the same time, the outer side of the partition cylinder 4 is attached to the inner side of the sealing plate 7 through the sealing layer 5.

[0021] In this embodiment, as Figure 1 , Figure 3 and Figure 4 The sealing layer 5 can be made of soft rubber, which can help enhance the sealing performance at the connection between the inner side of the partition cylinder 4 and the sealing plate 7, reduce the accumulation of impurities in the fluid medium inside the C-type ball valve between the base plate 1 and the sealing plate 7, and ensure the normal operation of the valve seat elastic compensation mechanism.

[0022] In a preferred embodiment, multiple sets of buffer cylinders 2 are fixedly connected around the surface of the substrate 1 at equal intervals in the circumferential direction. All sets of buffer cylinders 2 have a cylindrical structure, and the axial section of the buffer cylinder 2 has a C-shaped structure. At the same time, through holes are uniformly opened on the side of the buffer cylinder 2.

[0023] In this embodiment, as Figure 1 and Figure 4 The buffer cylinder 2 can not only help guide the compression and reset of the main spring inside, but also help enhance the stability of the buffer rod 3 when it moves. At the same time, the through holes evenly opened on the side of the buffer cylinder 2 can reduce the difficulty of the buffer rod 3 moving inside the buffer cylinder 2.

[0024] In a preferred embodiment, the buffer rod 3 has a cylindrical structure, the axial section of the buffer rod 3 has a T-shaped structure, and the size of the embedded end of the buffer rod 3 is adapted to the size of the inner cavity of the buffer cylinder 2. At the same time, the size of the embedded end of the buffer rod 3 is larger than the size of the other end of the buffer rod 3.

[0025] In this embodiment, as Figure 1 and Figure 4 The size of the embedded end of the buffer rod 3 is adapted to the size of the inside and opening of the buffer cylinder 2, which can help enhance the stability of the relative movement between the buffer rod 3 and the buffer cylinder 2, and further enhance the stability of the connection structure between the base plate 1 and the sealing plate 7, thereby improving the convenience of the overall installation of the valve seat.

[0026] As a preferred embodiment, the fixing plate 6 has a circular structure. The surface of the fixing plate 6 is connected to the buffer rod 3 at the position corresponding to the buffer cylinder 2. Multiple sets of through holes are opened at equal intervals around the surface of the fixing plate 6. The through holes and the buffer rod 3 are staggered. At the same time, bolts pass through the through holes to fix the screw holes opened in the sealing plate 7.

[0027] In this embodiment, as Figure 3 and Figure 4The fixing plate 6 can be conveniently fixed to the back of the sealing plate 7 through the cooperation of through holes, screw holes and bolts, thereby enhancing the convenience of fixing the multiple sets of buffer rods 3 to the sealing plate 7 and enhancing the operational stability of the elastic compensation mechanism in the valve seat.

[0028] In a preferred embodiment, the sealing plate 7 has a circular ring structure, and the positioning ring 9 fixedly connected to the front of the sealing plate 7 has a circular ring structure. The positioning ring 9 has protrusions on both the inner and outer sides, and the axial section of the positioning ring 9 has an umbrella-shaped structure. At the same time, the edges of the positioning ring 9 have an arc-shaped structure.

[0029] In this embodiment, as Figure 1 , Figure 3 and Figure 4 The outer and inner diameters of the sealing plate 7 and the substrate 1 are equal. The positioning grooves 12 of the positioning ring 9 and the sealing ring 8 are matched in size. The two sets of protrusions on the inner and outer sides of the positioning ring 9 can help enhance the snapping effect of the positioning ring 9 on the sealing ring 8, thereby helping to enhance the initial positioning and fixing connection between the sealing plate 7 and the sealing ring 8.

[0030] In a preferred embodiment, the sealing ring 8 has an overall annular structure, the opening end of the inner side of the sealing ring 8 has a spherical structure, and the mounting groove 11 opened on the surface of the sealing ring 8 has an annular structure. The size of the mounting groove 11 is adapted to the mounting plate 10, and the positioning groove 12 is opened on the surface of the sealing ring 8 relative to the position of the positioning ring 9.

[0031] In this embodiment, as Figure 1 and Figure 3 The sealing ring 8 can be made of soft rubber, which can help enhance the fit between the sealing ring 8 and the valve core, and enhance the sealing performance of the sealing surface. At the same time, the mounting plate 10 can be fixedly connected in the mounting groove 11 opened in the sealing ring 8 through the cooperation of through holes, long bolts, sealing plate 7 and mounting hole 13. Then, the sealing plate 7 and mounting plate 10 can clamp and fix the sealing ring 8 accordingly, thereby enhancing the stability of the fixed connection between the sealing ring 8 and the sealing plate 7, and helping to improve the installation and removal efficiency of the sealing ring 8.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A C-type ball valve seat resistant to crystallization, comprising: The substrate (1) is characterized in that: a partition cylinder (4) is fixedly connected to the inner side of the substrate (1), a sealing layer (5) is fixedly connected to the outer arc surface of the partition cylinder (4), a buffer cylinder (2) is symmetrically connected to the surface of the substrate (1), and one end of the buffer rod (3) is slidably connected to the buffer cylinder (2) through the main spring, while the other end of the buffer rod (3) is fixedly connected to the fixing plate (6), the fixing plate (6) is fixedly connected to the back of the sealing plate (7), and the front side of the sealing plate (7) is fixedly connected to the positioning ring (9), the sealing ring (8) is fixedly connected to the front side of the sealing plate (7) through the positioning ring (9), and an installation groove (11) is opened on the outer side of the surface of the sealing ring (8), through holes are opened on the side of the installation groove (11) and the surface of the mounting plate (10), and an installation hole (13) is opened on the front side of the sealing plate (7) corresponding to the position of the through hole, and a long bolt passes through the through hole and screws into the installation hole (13).

2. The crystallization-resistant C-type ball valve seat according to claim 1, characterized in that, The substrate (1) has a circular ring structure, the partition cylinder (4) fixedly connected to the surface of the substrate (1) has a cylindrical structure, and the sealing layer (5) fixedly connected to the outer side of the partition cylinder (4) has a cylindrical structure. At the same time, the outer side of the partition cylinder (4) is attached to the inner side of the sealing plate (7) through the sealing layer (5).

3. The crystallization-resistant C-type ball valve seat according to claim 1, characterized in that, Multiple sets of buffer cylinders (2) are fixedly connected around the surface of the substrate (1) at equal intervals in the circumferential direction. All sets of buffer cylinders (2) are cylindrical in shape, and the axial section of the buffer cylinder (2) is C-shaped. At the same time, through holes are uniformly opened on the side of the buffer cylinder (2).

4. A crystallization-resistant C-type ball valve seat according to claim 1, characterized in that, The buffer rod (3) has a cylindrical structure and a T-shaped cross section. The size of the embedded end of the buffer rod (3) is matched with the size of the inner cavity of the buffer cylinder (2), and the size of the embedded end of the buffer rod (3) is larger than the size of the other end of the buffer rod (3).

5. A crystallization-resistant C-type ball valve seat according to claim 1, characterized in that, The fixing plate (6) has a circular structure. The position of the fixing plate (6) relative to the buffer cylinder (2) is connected to the buffer rod (3). Multiple sets of through holes are opened at equal intervals around the surface of the fixing plate (6). The through holes and the buffer rod (3) are staggered. At the same time, the bolt passes through the through holes to fix the screw hole opened in the sealing plate (7).

6. A crystallization-resistant C-type ball valve seat according to claim 1, characterized in that, The sealing plate (7) has a circular ring structure, and the positioning ring (9) fixedly connected to the front of the sealing plate (7) has a circular ring structure. The positioning ring (9) has protrusions on both the inner and outer sides, and the axial section of the positioning ring (9) has an umbrella-shaped structure. At the same time, the edges of the positioning ring (9) have an arc-shaped structure.

7. A crystallization-resistant C-type ball valve seat according to claim 1, characterized in that, The sealing ring (8) is in the form of a circular ring structure. The opening end of the inner side of the sealing ring (8) is in the form of a spherical structure. The mounting groove (11) on the surface of the sealing ring (8) is in the form of a circular ring structure. The size of the mounting groove (11) and the mounting plate (10) are matched. At the same time, the positioning groove (12) is opened on the surface of the sealing ring (8) relative to the positioning ring (9).

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