Resin valve

Abstract

The utility model discloses a resin valve, belongs to the field of resin valves, solves the problem that a valve main body or a manifold block is easy to creep at the joint of a bolt, and adopts the technical scheme that the resin valve mainly comprises a shell, the shell comprises the manifold block and the valve main body, a valve core is arranged between the valve main body and the manifold block, and a driving component is assembled in the valve main body. A connecting rod is arranged between the manifold block and the valve body in a penetrating mode, one end of the connecting rod is connected with the first partial pressure piece and acts on the manifold block through the first partial pressure piece, and the other end of the connecting rod is connected with the second partial pressure piece and acts on the valve body through the second partial pressure piece. The first partial pressure piece and the second partial pressure piece comprise connecting parts and abutting parts, the connecting parts are connected with the at least two connecting rods, and the abutting parts abut against the manifold block or the valve body. The utility model is mainly used for dispersing the stress on the valve main body and the manifold block and reducing the possibility of creep deformation of the valve main body and the manifold block.

Description

Technical Field

[0001] The utility model relates to the technical field of resin valves, in particular to a resin valve. Background Art

[0002] The valve is a control component in the pipeline fluid delivery system, which can be used to control the on / off, pressure, direction or flow of the fluid. According to the function, it can be divided into shut-off valves, regulating valves, check valves, etc.; among them, the valve body structure of the resin valve is composed of resin material to ensure that the valve body has strong corrosion resistance and good cleanliness. In the prior art, the shell of the resin valve usually includes a valve body and a manifold block, and a chamber with an opening and a flow channel connecting the chamber are formed in the manifold block. The valve body is located at the opening end of the chamber, and a valve core is also provided between the valve body and the manifold block. In order to maintain the sealed connection between the valve body and the manifold block, bolts are usually used to fix the valve body and the manifold block.

[0003] However, when the bolts are used to tighten the valve body and the manifold block, the fixing force of the bolts on the valve body and the manifold block is relatively concentrated, so that the local forces acting on the valve body and the manifold block are relatively large, which makes it easy for the valve body and the manifold block to creep at the connection point of the bolts. When the valve body or the manifold block creeps, the abutment force between the bolts and the valve body or the manifold block will decrease, which makes it easy for the bolts to loosen, thereby affecting the sealing performance of the shell. Utility Model Content

[0004] The utility model aims to solve the problem that the bolts at the connection of the valve body or the manifold block are prone to loosening due to creep. For this purpose, a resin valve is provided to disperse the stress on the valve body and the manifold block and reduce the possibility of creep of the valve body and the manifold block.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A resin valve, comprising:

[0007] The housing comprises a manifold block and a valve body, wherein a chamber having an opening and a flow channel communicating with the chamber are formed in the manifold block, and the valve body is located at the opening end of the chamber;

[0008] A valve core is disposed between the valve body and the manifold block;

[0009] A drive assembly, assembled with the valve body and used to drive the valve core to move;

[0010] A connecting rod is provided between the manifold block and the valve body and is used to connect the manifold block and the valve body;

[0011] The resin valve also includes:

[0012] A first voltage divider, one end of the connecting rod is connected to the first voltage divider and acts on the manifold block through the first voltage divider;

[0013] A second pressure dividing member, the other end of the connecting rod is connected to the second pressure dividing member and acts on the valve body through the second pressure dividing member;

[0014] The first pressure dividing member and the second pressure dividing member include a connecting portion and an abutting portion, wherein the connecting portion is connected to at least two connecting rods, and the abutting portion abuts against the manifold block or the valve body.

[0015] The beneficial effects of adopting the utility model are:

[0016] In the utility model, the first pressure divider and the second pressure divider are respectively abutted against the manifold block and the valve body through the abutment part. Compared with the method in which the connecting rod directly abuts against the manifold block or the valve body, the contact area between the two can be effectively increased, so that the force applied to the manifold block and the valve body is more dispersed, avoiding local stress concentration of the manifold block and the valve body, thereby ensuring that the manifold block and the valve body are difficult to creep or the creep speed is greatly reduced, thereby effectively avoiding the loosening of the connecting rod due to the creep of the manifold block or the valve body. The stiffness of the first pressure divider and the second pressure divider in the above-mentioned is greater than the stiffness of the shell. For example, in order to ensure the corrosion resistance of the shell, the shell is made of resin materials such as PTFE, PP, PFA, etc., while the first pressure divider and the second pressure divider are made of materials with greater stiffness, such as stainless steel, ceramics, etc.

[0017] Preferably, a sealed cavity for accommodating the end of the connecting rod is provided inside the shell, and the first pressure divider and / or the second pressure divider are located inside the sealed cavity, and the sealed cavity has an opening and a sealing cover for sealing the opening. By adopting the above-mentioned technical solution, the sealed cavity provides a sealed space for the connecting rod, the first pressure divider and / or the second pressure divider, which can prevent the corrosion of the connecting rod, the first pressure divider and / or the second pressure divider by external water vapor or corrosive gas, and at the same time, it can prevent water vapor or corrosive gas from entering the valve body along the connecting rod from the end of the connecting rod, causing the components inside the valve body to be rusted or corroded. During installation, the connecting rod, the first pressure divider and / or the second pressure divider will be installed from the opening, and after the installation is completed, the sealing cover will seal the opening of the sealed cavity.

[0018] Preferably, the side of the abutment portion that applies pressure to the shell is a pressure surface, and the shell is provided with a support surface that matches the pressure surface. By adopting the aforementioned technical solution, the pressure surface and the support surface are matched, so that the pressure surface and the support surface can form a tight fit. For example, when the pressure surface is a non-planar structure, such as when the pressure surface is at least partially an arc surface and / or an inclined surface, the close contact between the pressure surface and the support surface can also be ensured. Among them, in addition to a plane, the pressure surface can also be an arc surface structure or a structure composed of multiple sections of inclined surfaces. The aforementioned non-planar structure can increase the contact area between the abutment portion and the shell, thereby making the pressure per unit pressure area between the pressure surface and the support surface smaller, thereby better ensuring that the shell will not creep due to pressure or ensuring that the creep amount of the shell is smaller, thereby effectively avoiding the loosening of the bolts. It should be noted that, especially when a sealed cavity is provided, the aforementioned structure can ensure that the contact area between the pressure surface and the support surface is small while ensuring that the first pressure divider and the second pressure divider themselves are not too large, so that the structure of the sealed cavity itself does not need to be set too large, which is convenient for actual processing and ensures that problems are less likely to occur at the subsequent sealing of the sealed cavity opening.

[0019] Preferably, the abutment is in the shape of a rod or a plate. By adopting the above technical solution, the abutment is in the shape of a rod or a plate, which can further increase the contact area between the abutment and the manifold block or the valve body, thereby effectively dispersing the pressure on the manifold block or the valve body, making it difficult for the manifold block and the valve body to creep or greatly reducing the creep speed, so that the abutment and the manifold block or the valve body are closely matched, reducing the possibility of loosening of the connecting rod, and improving the sealing performance of the manifold block and the valve body.

[0020] Preferably, the housing is provided with a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole constitute the sealed cavity, the first mounting hole is used to install the connecting rod, the second mounting hole is used to install the first pressure divider or the second pressure divider, and the sealing cover is sealed with the openings of the first mounting hole and the second mounting hole. By adopting the above technical solution, the structure of the sealed cavity can be processed more conveniently and simply, and the sealed cavity is formed by the hole structure, which can ensure that the opening of the sealed cavity is not too large, so that when the sealed cavity opening is sealed, it can better ensure that the opening has good sealing performance.

[0021] Preferably, the manifold block includes a valve seat that cooperates with the valve core, wherein the first pressure divider and / or the second pressure divider are located on both sides of the first direction of the valve seat in the plane and extend along the second direction; the first direction is perpendicular to the second direction. The above-mentioned technical solution is adopted, by distributing the two first pressure dividers and / or the second pressure dividers on both sides of the valve seat along the first direction and extending them along the second direction, so that the force of the first pressure divider and / or the second pressure divider on the valve seat can be dispersed to the surroundings of the valve seat, so that the force around the valve seat is more uniform, and the possibility of relative tilt between the manifold block and the valve body is reduced, so that good sealing can be achieved everywhere. At the same time, when the valve body is a needle valve or other valve body with high requirements for adjustment accuracy, the manifold block and the valve body will not tilt relative to each other, and it can also ensure that the valve core will not tilt relative to the valve seat during the adjustment process, so that the performance during adjustment is more stable, and the situation that it is difficult to accurately change the valve body performance due to the tilt of the valve core relative to the valve seat will not occur.

[0022] Preferably, an annular seal is provided between the valve body and the manifold block, the annular seal is in sealing cooperation with the valve body and the manifold block, and the connecting rod passes through the annular seal. By adopting the above-mentioned technical solution, the annular seal can improve the sealing performance of the connection between the manifold block and the valve body, and prevent external water vapor or corrosive gas from contacting the connecting rod through the connection between the manifold block and the valve body, or entering the inside of the shell along the gap between the connecting rod and the shell, thereby avoiding corrosion and rust of the connecting rod and the metal parts inside the shell. The above-mentioned annular seal can be a sealing ring or a sealing gasket or other structure that is sleeved on the outside of the connecting rod and pressed between the valve body and the manifold block.

[0023] Preferably, the valve body includes a cover body and a connecting block, the two ends of the connecting block are respectively connected to the cover body and the manifold block, the connecting block and the cover body are surrounded to form an installation cavity, the driving assembly includes a driving motor in the cover body, and the second pressure divider is between the driving motor and the manifold block. The above-mentioned technical solution can reduce the length of the connecting rod, thereby avoiding the excessive length of the connecting rod, thereby avoiding the excessive creep amount caused by the excessive pressure thickness of the shell; the cover body and the connecting block are separately arranged, which can make the installation of the second pressure divider and the connecting rod simpler, which is conducive to improving the installation efficiency of the second pressure divider; in addition, since the temperature of the driving motor is relatively high when it is working, the shell around the driving motor is affected by the high temperature and is more prone to creep, and the second pressure divider is between the driving motor and the manifold block, which avoids the connecting rod passing through the driving motor, greatly reducing the influence of the heat of the motor on the creep of the shell, thereby effectively avoiding the loosening of the connecting rod caused by the creep of the shell.

[0024] Preferably, the drive assembly further comprises a positioning platform disposed in the mounting cavity, the second pressure-dividing member is a plate-shaped structure and is provided with a positioning hole matched with the positioning platform; and / or, the second pressure-dividing member is connected to the valve body via at least two positioning bolts. By adopting the above-mentioned technical solution, the positioning platform cooperates with the positioning hole to realize the rapid positioning of the second pressure-dividing member, making the connection between the connecting rod and the second pressure-dividing member faster and more convenient, and helping to improve the assembly efficiency of the second pressure-dividing member and the connecting rod; similarly, the structure connected to the valve body via the positioning bolt can achieve the effect of positioning the second pressure-dividing member, thereby facilitating the connection between the second pressure-dividing member and the connecting rod.

[0025] Preferably, the side of the first pressure-dividing member away from the valve body is a plane, and an abutment member is provided at one end of the connecting rod connected to the first pressure-dividing member; the abutment member acts on the plane of the first pressure-dividing member so that the first pressure-dividing member applies pressure to the manifold block; or, the abutment member acts on the plane of the first pressure-dividing member through a gasket so that the first pressure-dividing member applies pressure to the manifold block. By adopting the above-mentioned technical solution, the plane structure can make the contact between the abutment member and the first pressure-dividing member closer, less prone to skew, and make the connection between the connecting rod and the second pressure-dividing member more convenient; in addition, the plane structure can increase the contact area between the first pressure-dividing member and the abutment member, can effectively disperse the force of the abutment member on the first pressure-dividing member, reduce the possibility of damage to the first pressure-dividing member, and extend the service life of the first pressure-dividing member.

[0026] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a resin valve of the utility model;

[0029] Figure 2 This is a cross-sectional view of a resin valve of the utility model Figure 1 ;

[0030] Figure 3 for Figure 2 A partial enlarged view of the

[0031] Figure 4 This is a cross-sectional view of a resin valve of the utility model Figure 2 ;

[0032] Figure 5 This is a schematic diagram of the connection between the valve body and the second pressure dividing member in a resin valve of the utility model;

[0033] Figure 6 The utility model is a schematic diagram of the connection between a connecting rod and a first pressure dividing member and a second pressure dividing member in a resin valve.

[0034] Figure numerals: 11 valve body, 111 cover body, 112 connecting block, 1121 positioning platform, 113 mounting cavity, 12 manifold block, 121 sealing cavity, 1211 first mounting hole, 1212 second mounting hole, 122 sealing cover, 2 connecting rod, 21 abutment member, 22 gasket, 23 annular sealing member, 3 first pressure dividing member, 31 abutment part, 32 connecting part, 4 support frame, 41 second pressure dividing member, 411 positioning hole, 412 assembly hole, 42 positioning bolt, 5 driving motor. DETAILED DESCRIPTION

[0035] The technical scheme of the embodiment of the utility model is explained and described below in conjunction with the drawings of the embodiment of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work belong to the protection scope of the utility model. In the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] like Figures 1 to 3As shown, this embodiment shows a resin valve, including a shell, the shell includes a manifold block 12 and a valve body 11, a chamber with an opening and a flow channel connecting the chamber are formed in the manifold block 12, the valve body 11 is located at the opening end of the chamber, a valve core is provided between the manifold block 12 and the valve body 11, and a driving assembly is assembled in the valve body 11, which is transmission-connected to the valve core and drives the valve core to move.

[0039] In this embodiment, a first pressure divider 3 is provided in the manifold block 12, a second pressure divider 41 is provided in the valve body 11, a connecting rod 2 is passed between the manifold block 12 and the valve body 11, and a plurality of holes for the connecting rod 2 to pass through are provided on the first pressure divider 3 and the second pressure divider 41. During the assembly process, the connecting rod 2 passes through the holes of the first pressure divider 3 and penetrates the manifold block 12 and the valve body 11, and then extends to the second pressure divider 41. One end of the connecting rod 2 is connected to the first pressure divider 3 and acts on the manifold block 12 through the first pressure divider 3, and the other end is connected to the second pressure divider 41 and acts on the valve body 11 through the second pressure divider 41.

[0040] like Figure 6 As shown, the first pressure dividing member 3 and the second pressure dividing member 41 each include a connecting portion 32 and an abutting portion 31, the connecting portion 32 is connected to at least two connecting rods 2, the abutting portion 31 of the first pressure dividing member 3 abuts against the manifold block 12, and the abutting portion 31 of the second pressure dividing member 41 abuts against the valve body 11.

[0041] In this embodiment, the connecting rod 2 transmits the tightening force to the manifold block 12 through the first pressure dividing member 3, and transmits the tightening force to the valve body 11 through the second pressure dividing member 41, thereby increasing the pressure area of ​​the manifold block 12 and the valve body 11, and achieving a more dispersed pressure on the manifold block 12 and the valve body 11. That is, when the manifold block 12 and the valve body 11 are under pressure, the pressure of the same area will be smaller, thereby achieving the manifold block 12 and the valve body 11. The possibility of creep will be reduced under the action of smaller pressure, and even if creep occurs, the creep amount will be smaller, thereby ensuring that the connecting rod 2 will not easily become loose and ensuring that the valve body 11 and the manifold block 12 always maintain a firm connection.

[0042] It should be noted that the rigidity of the first voltage divider 3 and the second voltage divider 4 is greater than the rigidity of the shell. For example, in order to ensure the corrosion resistance of the shell, the shell is made of resin / plastic materials such as PTFE, PP, PFA or PVDF, while the first voltage divider and the second voltage divider are made of materials with greater rigidity, which can be metal materials, alloy materials, or other non-metallic materials, such as stainless steel, ceramics, etc.

[0043] like Figure 2 and Figure 3As shown, in this embodiment, the manifold block 12 is provided with a first mounting hole 1211 and a second mounting hole 1212, wherein the first mounting hole 1211 is used to install the connecting rod 2, and the second mounting hole 1212 is used to install the first pressure divider 3, the first mounting hole 1211 and the second mounting hole 1212 are connected to form a sealed cavity 121, and the first mounting hole 1211 and the second mounting hole 1212 both have an opening and a sealing cover 122 for sealing the opening.

[0044] During the installation process, the first pressure divider 3 is first installed into the sealed cavity 121 through the first mounting hole 1211 so that the hole of the first pressure divider 3 is aligned with the through hole of the manifold block 12, and then the connecting rod 2 is installed into the sealed cavity 121 through the second mounting hole 1212. When the connecting rod 2 and the first pressure divider 3 and the second pressure divider 41 are assembled, the sealing cover 122 is used to close the openings of the first mounting hole 1211 and the second mounting hole 1212, thereby completing the assembly of the manifold block 12 and the valve body 11.

[0045] The opening is sealed by the sealing cover 122, thereby isolating the sealing cavity 121 from the external environment, thereby preventing water vapor or corrosive gases in the external environment from entering the sealing cavity 121 through the opening, that is, it can prevent water vapor or corrosive gases from causing rust or corrosion to structures such as the connecting rod 2, the first pressure divider 3, and the second pressure divider 41, and it can prevent water vapor or corrosive gases from entering the valve body 11 along the connecting rod 2 and causing corrosion to the structure in the valve body 11.

[0046] Of course, the setting of the aforementioned sealing cavity 121 can also reduce the thickness of the connecting rod 2 passing through the manifold block 121. In this case, when the manifold block 121 is subjected to the same force, its own stressed thickness is smaller, which can ensure that the creep amount of the manifold block 121 itself is smaller at the same time, thereby further ensuring that the connecting rod 2 will not loosen due to the creep of the manifold block 121.

[0047] like Figure 4 and Figure 6 As shown, in this embodiment, the abutting portion 31 and the connecting portion 32 are respectively located at the upper end and the lower end of the first pressure dividing member 3, wherein the abutting portion 31 has a pressure surface abutting against the shell, and the connecting rod 2 is connected to the connecting portion 32 to act on the first pressure dividing member 3. So that the abutting portion 31 applies pressure to the manifold block 12, the shell is provided with a supporting surface adapted to the pressure surface, so that when the pressure surface is not a planar structure, the supporting surface can also be closely fitted with the pressure surface, thereby ensuring that there is a sufficiently large contact area between the two, thereby ensuring that the pressure at each location of the two is not too large, and ensuring that the supporting surface is not prone to creep and deformation.

[0048] Specifically, in the present embodiment, the pressure surface is an upwardly protruding arc surface, or a convex surface composed of multiple inclined surfaces, and the corresponding supporting surface is adapted to the pressure surface so that the pressure surface and the supporting surface can maintain a close fit. Compared with the plane contact, the contact between the arc surface or the convex surface and the supporting surface can disperse the pressure applied to the manifold block 12, reduce stress concentration, and thus slow down the creep rate of the manifold block 12; in addition, the use of the arc surface or the convex surface in conjunction with the supporting surface can speed up the positioning of the first pressure dividing member 3, thereby improving the assembly efficiency of the valve body 11 and the manifold block 12.

[0049] In addition, in the present embodiment, two first pressure-dividing members 3 are provided in the manifold block 12, wherein the first pressure-dividing members 3 are rod-shaped, each of the first pressure-dividing members 3 is provided with two holes, and the corresponding connecting rods 2 are provided with four. The manifold block 12 includes a valve seat that cooperates with the valve core, and the two first pressure-dividing members 3 are distributed on both sides of the valve seat in the first direction in the plane, and the two ends of the first pressure-dividing members 3 extend in the second direction respectively, wherein the first direction is perpendicular to the second direction. Under such a setting, when the first pressure-dividing member 3 applies pressure to the manifold block 12, the force applied to the manifold block 12 can be evenly distributed relative to the valve seat, so that when the manifold block and the valve body 11 are installed, it can be ensured that the force is evenly applied everywhere, and there will be no tilting between the valve body 11 and the manifold block 12 caused by uneven force, thereby avoiding the valve body performance being affected by the tilt.

[0050] It should be noted here that when the valve body 11 and the manifold block 12 are tilted, leakage is likely to occur at the connection between the two, and when the valve body is a high-precision valve body such as a flow control valve, if the valve body 11 and the manifold block 12 are tilted, its flow control function will be seriously affected.

[0051] Of course, it is understandable that in other embodiments, the first pressure divider 3 can also be plate-shaped or ring-shaped, and the first pressure divider 3 is provided with four holes, that is, the first pressure divider 3 can be connected to four connecting rods 2 at the same time, wherein when the first pressure divider 3 is plate-shaped, a avoidance hole for avoiding the interface is provided in the middle of the first pressure divider 3, and at this time, the structure of the first mounting hole 1211 on the manifold block 12 matches the first pressure divider 3, so that the first pressure divider 3 can be smoothly installed into the sealed cavity 121, and the connecting rod 2 is also installed into the sealed cavity 121 from the first mounting hole 1211; the first pressure divider 3 is plate-shaped or ring-shaped, which can further increase the contact surface between the first pressure divider 3 and the manifold block 12, and disperse the force of the connecting rod 2 on the manifold block 12, thereby reducing the possibility of creep of the manifold block 12, and helping to extend the service life of the manifold block 12; in addition, it can also reduce the number of installations of the first pressure divider 3, which helps to speed up the assembly speed of the first pressure divider 3 and the connecting rod 2 and improve the assembly efficiency.

[0052] like Figure 6As shown, in this embodiment, the connecting rod 2 is a bolt as a whole, and the end of the connecting rod 2 connected to the first pressure dividing member 3 is provided with an abutment 21, and the side of the first pressure dividing member 3 away from the valve body 11 is a plane structure, and a gasket 22 is sleeved on the connecting rod 2. The abutment 21 acts on the plane of the first pressure dividing member 3 through the gasket 22 so that the first pressure dividing member 3 applies pressure to the manifold block 12. The use of a plane structure can make the contact between the abutment 21 and the first pressure dividing member 3 closer, and it is not easy to be skewed, so that the connection between the connecting rod 2 and the second pressure dividing member 41 is more convenient; in addition, the plane structure can increase the contact area between the first pressure dividing member 3 and the abutment 21, ensuring that the friction between the two will be greater and there will be no looseness between the first pressure dividing member and the abutment 21; in addition, the gasket 22 can be a spring gasket or a rubber gasket, or the aforementioned combination structure. Of course, it can be understood that in other embodiments, the abutment 21 can directly act on the first pressure dividing member 3.

[0053] like Figure 2 and Figure 4 As shown, in this embodiment, a mounting groove is provided between the valve body 11 and the manifold block 12, and an annular seal 23 is provided in the mounting groove. The upper and lower sides of the annular seal 23 are respectively sealed with the valve body 11 and the manifold block 12, and the connecting rod 2 passes through the middle of the annular seal 23. The annular seal 23 can improve the sealing performance of the connection between the manifold block 12 and the valve body 11, and prevent external water vapor or corrosive gas from contacting the connecting rod 2 at the connection between the manifold block 12 and the valve body 11, and entering the valve body 11 and other structures along the gap between the connecting rod 2 and the shell, causing the connecting rod 2 to be corroded or the components in the valve body 11 to be corroded.

[0054] like Figures 2 to 4 As shown, in this embodiment, the valve body 11 includes a cover body 11 and a connecting block 112, wherein the upper and lower ends of the connecting block 112 are respectively connected to the cover body 11 and the manifold block 12, and an installation cavity 113 is formed between the connecting block 112 and the cover body 11, and the drive component and the second pressure divider 41 are both in the installation cavity 113; it should be noted that in this embodiment, the connecting block 112 and the cover body 11 maintain a sealed connection, that is, the installation cavity 113 can be formed as a closed cavity, thereby preventing external water vapor or corrosive gas from entering the interior of the valve body 11 through the assembly gap between the connecting block 112 and the cover body 11, thereby causing corrosion to the drive component or the second pressure divider 41.

[0055] like Figures 4 to 6As shown, in this embodiment, a support frame 4 is provided in the valve body 11, and the upper end of the support frame 4 is fixedly connected to the drive motor 5, and the lower end of the support frame 4 is against the connecting block 112 to form a second pressure dividing member 41, and the second pressure dividing member 41 is located between the drive motor 5 and the manifold block 12. The cover body 11 and the connecting block 112 are separately arranged, so that the length of the connecting rod 2 can be shortened, that is, the thickness of the shell through which the connecting rod 2 passes is smaller. In this case, the creep amount is smaller when the shell is under pressure, thereby avoiding the connection rod 2 from becoming loose.

[0056] In addition, the second voltage divider 41 is located between the drive motor 5 and the manifold block 12, which can reduce the influence of the high temperature generated by the drive motor 5 on the second voltage divider 41, reduce the possibility of the second voltage divider 41 being deformed by the high temperature, and help to extend the service life of the second voltage divider 41. Specifically, since the temperature of the drive motor 5 is relatively high when it is working, the shell around the drive motor 5 is affected by the high temperature and is more prone to creep. The second voltage divider 41 is located between the drive motor 5 and the manifold block 12, which prevents the connecting rod from passing through the drive motor 5, greatly reducing the influence of the heat of the drive motor 5 on the creep of the shell, thereby effectively preventing the loosening of the connecting rod 2 caused by the creep of the shell.

[0057] like Figure 5 and Figure 6 As shown, in this embodiment, the second pressure dividing member 41 is plate-shaped as a whole, and four threaded holes are provided on the second pressure dividing member 41. The end of the connecting rod 2 is threadedly connected to the threaded hole, and the bottom surface of the second pressure dividing member 41 constitutes the abutment portion 31, and the remaining part constitutes the connecting portion 32, thereby realizing the connection between the second pressure dividing member 41 and the connecting rod 2; of course, it can be understood that in other embodiments, the connecting rod 2 can also be connected to the second pressure dividing member 41 through the cooperation of a nut, and at this time, the abutment surface with the nut constitutes the connecting portion 32; it should also be noted that the second pressure dividing member 41 can also be rod-shaped, and the structure of the second pressure dividing member 41 is the same as that of the first pressure dividing member 3, that is, two rod-shaped second pressure dividing members 41 can be arranged in the valve body 11.

[0058] like Figure 5 and Figure 6As shown, in this embodiment, the mounting cavity 113 is provided with a positioning platform 1121, the second pressure dividing member 41 is a plate-like structure and is provided with a positioning hole 411 that matches the positioning platform 1121. In this embodiment, the positioning platform 1121 is annular as a whole. During the assembly process of the second pressure dividing member 41, the positioning hole 411 of the second pressure dividing member 41 is sleeved on the outside of the positioning platform 1121, thereby realizing the radial positioning of the second pressure dividing member 41 in the positioning platform 1121. Thereafter, the through hole of the connecting block 112 is aligned with the threaded hole by rotation, so that the connecting rod 2 is connected to the threaded hole. The positioning platform 1121 cooperates with the positioning hole 411 to realize the rapid positioning of the second pressure dividing member 41, so that the connection between the connecting rod 2 and the second pressure dividing member 41 is faster and more convenient, which helps to improve the assembly efficiency of the second pressure dividing member 41 and the connecting rod 2. Of course, in other embodiments, the outer peripheral side of the positioning platform 1121 may also be a rotation-stopping structure. After the positioning platform 1121 cooperates with the positioning hole 411, it can limit the rotation of the second pressure dividing member 41, so that the second pressure dividing member 41 is directly aligned with the connecting block 112. At this time, the rotation-stopping structure of the positioning platform 1121 may be a polygonal columnar structure, and the positioning hole 411 may be a hole that cooperates with the polygonal columnar structure; the positioning platform may also be a plurality of columnar protrusion structures arranged inside the mounting cavity 113, so that the positioning between the two is achieved through the cooperation between the positioning platform and the positioning hole 411.

[0059] In addition, two assembly holes 412 may be provided in the second pressure dividing member 41, and positioning bolts 42 may be provided in the assembly holes 412. The second pressure dividing member 41 is connected to the valve body 11 through the positioning bolts 42, and the positioning bolts 42 cooperate with the valve body 11 to achieve the positioning of the second pressure dividing member 41. Of course, the positioning bolts 42 and the positioning holes 411 may cooperate with the positioning platform 1121 to achieve the positioning of the second pressure dividing member 41, so that the second pressure dividing member 41 can be conveniently assembled with the connecting rod 2.

[0060] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A resin valve, comprising: The housing comprises a manifold block and a valve body, wherein a chamber having an opening and a flow channel communicating with the chamber are formed in the manifold block, and the valve body is located at the opening end of the chamber; A valve core is disposed between the valve body and the manifold block; A drive assembly, assembled with the valve body and used to drive the valve core to move; A connecting rod is provided between the manifold block and the valve body and is used to connect the manifold block and the valve body; Features: The resin valve also includes: A first voltage divider, one end of the connecting rod is connected to the first voltage divider and acts on the manifold block through the first voltage divider; A second pressure dividing member, the other end of the connecting rod is connected to the second pressure dividing member and acts on the valve body through the second pressure dividing member; The first pressure dividing member and the second pressure dividing member include a connecting portion and an abutting portion, wherein the connecting portion is connected to at least two connecting rods, and the abutting portion abuts against the manifold block or the valve body.

2. The resin valve according to claim 1, characterized in that: A sealed cavity for accommodating the end of the connecting rod is provided inside the housing, and the first pressure dividing member and / or the second pressure dividing member are located inside the sealed cavity, and the sealed cavity has an opening and a sealing cover for sealing the opening.

3. The resin valve according to claim 2, characterized in that: The side of the abutting portion that applies pressure to the shell is a pressure surface, and the shell is provided with a supporting surface that matches the pressure surface.

4. The resin valve according to claim 3, characterized in that: The abutting portion is rod-shaped or plate-shaped.

5. The resin valve according to claim 2, characterized in that: The shell is provided with a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole constitute the sealed cavity, the first mounting hole is used to install the connecting rod, the second mounting hole is used to install the first pressure divider or the second pressure divider, and the sealing cover is sealed with the openings of the first mounting hole and the second mounting hole.

6. The resin valve according to claim 1, characterized in that The manifold block includes a valve seat matched with the valve core, wherein the first pressure dividing member and / or the second pressure dividing member are located on both sides of the valve seat in a first direction in a plane and extend along a second direction; the first direction is perpendicular to the second direction.

7. The resin valve according to claim 1, characterized in that An annular seal is provided between the valve body and the manifold block. The annular seal is in sealing cooperation with the valve body and the manifold block, and the connecting rod passes through the annular seal.

8. The resin valve according to claim 1, wherein: The valve body includes a cover body and a connecting block, the two ends of the connecting block are respectively connected to the cover body and the manifold block, the connecting block and the cover body are surrounded to form an installation cavity, the driving component includes a driving motor in the cover body, and the second pressure divider is between the driving motor and the manifold block.

9. The resin valve according to claim 8, characterized in that The drive assembly further comprises a positioning platform arranged in the installation cavity, the second pressure dividing member is a plate-shaped structure and is provided with a positioning hole matching the positioning platform; and / or the second pressure dividing member is connected to the valve body via at least two positioning bolts.

10. The resin valve according to claim 1, wherein The side of the first pressure dividing member away from the valve body is a plane, and an abutment member is provided at one end of the connecting rod connected to the first pressure dividing member; the abutment member acts on the plane of the first pressure dividing member so that the first pressure dividing member applies pressure to the manifold block, or the abutment member acts on the plane of the first pressure dividing member through a gasket so that the first pressure dividing member applies pressure to the manifold block.

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