Straight dilution water valve

Abstract

This utility model relates to the technical field of water valves, specifically to a linear dilution water valve. The key technical points include a three-way fitting, a lower valve body, an upper valve body, and a valve stem. The three-way fitting includes an inlet pipe and a straight pipe. The lower and upper valve bodies are respectively mounted at both ends of the straight pipe. The inlet pipe intersects the straight pipe at a 90-degree angle and is close to the tangent direction of the straight pipe's side, allowing the inlet channel to introduce liquid along the tangent direction of the straight pipe. The inner wall of the lower valve body is shaped like a frustum, smaller at the front and larger at the back. The valve stem has a valve core at its front end, also shaped like a frustum, larger at the front and smaller at the back. The valve core abuts against the inner wall of the lower valve body to cut off the flow. The valve stem passes through the center of the upper valve body and slides axially with it. This utility model, through improvements to the three-way fitting and the valve stem structure, achieves the effect of being less prone to clogging and improving reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of water valves, specifically to a linear dilution water valve. Background Technology

[0002] In some paper manufacturing industries, paper mills have large paper-making equipment that requires controlled spraying of pulp. Therefore, water valves need to be installed on the pulp pipelines for control.

[0003] The internal space of existing water valves is mostly cylindrical, and the opening and closing of pulp water is controlled by the structure of the valve core (ball valve, butterfly valve, or gate valve). This design structure in the existing technology makes it easy for fibers in the pulp to accumulate, resulting in blockage or valve core jamming and sluggish operation, causing the water valve to malfunction and increasing the failure rate. Utility Model Content

[0004] In order to overcome the technical problems and shortcomings of the prior art, the present invention provides a linear dilution water valve that can reduce the failure rate and improve the reliability of operation.

[0005] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0006] A linear dilution water valve includes a tee fitting, a lower valve body, an upper valve body, and a valve stem. The tee fitting includes an inlet pipe section and a straight pipe section. The lower valve body and the upper valve body are respectively installed at both ends of the straight pipe section. The inlet pipe section intersects the straight pipe section at a 90-degree angle and is close to the tangent direction of the side of the straight pipe section, so that the inlet channel of the inlet pipe introduces liquid in the tangential direction of the straight pipe section.

[0007] The inner wall of the lower valve body is shaped like a frustum, smaller at the front and larger at the back. The front end of the valve stem is provided with a valve core, which is also shaped like a frustum, larger at the front and smaller at the back. When the front end of the valve core abuts against the inner wall of the lower valve body, it achieves flow interception.

[0008] The valve stem passes through the center of the upper valve body and slides axially with the upper valve body.

[0009] Preferably, a pressure plate is fixed to one side of the outer end of the upper valve body, and the pressure plate is sleeved on the valve stem and provides a sealing fit between the valve stem and the upper valve body.

[0010] Preferably, a bracket is fixed to one side of the outer end of the upper valve body, an actuator is assembled at the rear end of the bracket, an observation window is provided on the side of the bracket, and the actuator drives the valve stem to extend and retract linearly.

[0011] Preferably, the actuator is connected to the valve stem via a splined fixed shaft.

[0012] Preferably, the actuator includes a motor base plate, a housing, a plate bracket, a circuit board, and a linear motor. The motor base plate is inserted and fixed to the rear end of the bracket. The linear motor is fixed to the rear side of the motor base plate and extends its drive shaft into the bracket. The plate bracket is fixed to the rear side of the linear motor and fixes the circuit board. The housing is sleeved on the rear end of the motor base plate and covers the plate bracket, the circuit board, and the linear motor.

[0013] Preferably, the housing is provided with a wire hole for the lead wires of the linear motor to be led out.

[0014] Preferably, an outlet is provided at one end of the lower valve body, the outlet having a cylindrical outlet channel and a frustum-shaped ring edge on the outer side of the outlet.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model improves and adapts the three-way pipe fitting by modifying its external structure to adjust the water inlet direction, allowing the water to enter tangentially through the straight pipe. This allows the liquid to be guided by the side wall of the straight pipe, creating a centrifugal vortex flow in the straight pipe. This prevents pulp from accumulating or easily dispersed by the impact of the subsequent water flow, thus reducing the likelihood of valve stem malfunction. The lower valve body is used to spray out (pulp) water, thereby improving and adapting its internal wall structure and valve core to reduce the possibility of pulp blockage.

[0017] 2. The upper valve body blocks the rear end of the straight pipe section, which can seal the inner cavity, and the valve stem can move back and forth on the upper valve body. The upper valve body provides a guiding function for the valve stem.

[0018] 3. The pressure plate can further improve the sealing performance of the valve stem.

[0019] 4. The actuator is located at the rear end of the upper valve body, making the overall structure compact, the drive more stable, and the operation more smooth and reliable.

[0020] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0023] Figure 2This is a top view of an embodiment of this application;

[0024] Figure 3 This is a front view of an embodiment of this application;

[0025] Figure 4 yes Figure 3 A cross-sectional view of plane AA.

[0026] Explanation of reference numerals for major components:

[0027] 1. Tee fitting; 11. Inlet pipe section; 12. Straight pipe section; 2. Lower valve body; 21. Outlet section; 22. Ring edge; 23. Outlet channel; 3. Upper valve body; 4. Valve stem; 41. Valve core section; 5. Pressure plate; 6. Bracket; 61. Observation window; 7. Splined fixing shaft; 8. Actuator; 81. Motor base plate; 82. Housing; 83. Plate bracket; 84. Circuit board; 85. Linear motor; 86. Wire; 87. Wire hole. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. The following specific examples illustrate the embodiments of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0030] It should be noted that in the description of this application, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. Furthermore, it should be noted that in the description of this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the invention based on the specific circumstances.

[0031] Example:

[0032] This invention discloses a linear dilution water valve, as per an embodiment. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device includes a three-way fitting 1, a lower valve body 2, an upper valve body 3, and a valve stem 4. The three-way fitting 1 includes an inlet pipe section 11 and a straight pipe section 12. The lower valve body 2 and the upper valve body 3 are respectively installed at both ends of the straight pipe section 12. The inlet pipe section 11 intersects the straight pipe section 12 at a 90-degree angle and is close to the tangent direction of the side of the straight pipe section 12, so that the inlet channel of the inlet pipe introduces liquid along the tangent direction of the straight pipe section 12. The inner wall of the lower valve body 2 is shaped like a frustum, smaller at the front and larger at the back. The front end of the valve stem 4 has a valve core section 41, which is also shaped like a frustum, larger at the front and smaller at the back. When the front end of the valve core section 41 abuts against the inner wall of the lower valve body 2, it achieves flow control. The valve stem 4 passes through the center of the upper valve body 3 and slides axially with the upper valve body 3. The upper valve body 3 and the lower valve body 2 are installed at both ends of the straight pipe section 12, forming an inner cavity that provides liquid flow. The liquid here can be water, pulp, etc. In the pulp and paper industry, this device is used in one application. Generally, the straight tube section 12 is in a horizontal position during operation, such as... Figure 1 As described above. If the valve core blocks the outlet of the lower valve body 2, no water will be sprayed. If the liquid is pulp, some pulp will accumulate and a small amount of sediment will settle. Then the valve stem 4 opens the outlet. At this time, the water pressure and the tangential force cause the water in the inner cavity to flow in a spiral direction, which can better stir and mix the pulp and fiber sediment before spraying it out.

[0033] Working principle description: This utility model improves and adapts the external structure of the three-way fitting 1 to adjust the water inlet direction, allowing the water to enter tangentially to the straight pipe section 12. This allows the liquid to be guided by the side wall of the straight pipe, generating a centrifugal vortex water flow in the straight pipe section 12. This prevents pulp from accumulating or being easily dispersed by the subsequent water flow, thus reducing the likelihood of the valve stem 4 not opening and closing smoothly. The lower valve body 2 is used to spray out (pulp) water, thereby improving and adapting its internal wall structure and valve core 41, thus reducing the possibility of pulp blockage.

[0034] The upper valve body 3 is used to form a sealing fit with the tee pipe and also to form a seal with the valve stem 4. Therefore, a pressure plate 5 is fixed to one side of the outer end of the upper valve body 3. The pressure plate 5 is sleeved on the valve stem 4 and provides a sealing fit between the valve stem 4 and the upper valve body 3. The upper valve body 3 blocks the rear end of the straight pipe section 12, which can seal the inner cavity, and the valve stem 4 can move back and forth on the upper valve body 3. The upper valve body 3 provides a guiding function for the valve stem 4. The pressure plate 5 can further improve the sealing degree of the valve stem 4. The pressure plate 5 is made of rubber or plastic and can be fitted with sealing rings, etc.

[0035] To facilitate assembly and maintenance, a bracket 6 is fixed to one side of the outer end of the upper valve body 3. An actuator 8 is mounted at the rear end of the bracket 6, and an observation window 61 is provided on the side of the bracket 6. The actuator 8 drives the valve stem 4 to extend and retract linearly. Therefore, if the actuator 8 malfunctions, this component can be disassembled and replaced. The observation window 61 allows observation of the extension and retraction of the valve stem 4, thereby determining the position or stroke of the internal valve core 41.

[0036] To improve assembly reliability, the actuator 8 is connected to the valve stem 4 via a splined fixed shaft 7. This utilizes the spline to improve assembly accuracy and structural strength.

[0037] In this solution, the actuator 8 includes a motor base plate 81, a housing 82, a plate bracket 83, a circuit board 84, and a linear motor 85. The motor base plate 81 is inserted and fixed to the rear end of the bracket 6. The linear motor 85 is fixed to the rear side of the motor base plate 81 and extends the drive shaft into the bracket 6. The plate bracket 83 is fixed to the rear side of the linear motor 85 and fixes the circuit board 84. The housing 82 is sleeved on the rear end of the motor base plate 81 and covers the plate bracket 83, the circuit board 84, and the linear motor 85.

[0038] The actuator 8 is located at the rear end of the upper valve body 3, making the overall structure compact, the drive more stable, and the operation smoother and more reliable. The drive shaft of the linear motor 85 performs forward and backward extension movements. Mounted at the rear end of the upper valve body 3, it allows for coaxial assembly. The housing 82 effectively protects the circuit board 84 and the linear motor 85, providing shielding and protection.

[0039] To facilitate signal transmission, the housing 82 is provided with a wire hole 87 for the lead wire 86 of the linear motor 85 to be led out. The lead wire 86 can be a power line or a signal line, etc. An outlet portion 21 is provided at one end of the lower valve body 2. The outlet portion 21 has a cylindrical outlet channel 23, and a frustum-shaped ring edge 22 is provided on the outer side of the outlet portion 21. The structural design of the outlet portion 21 improves the structural strength of the outlet. This structure also facilitates transportation, allowing the entire structure to be placed vertically via the ring edge 22 on the outlet portion 21.

[0040] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A linear dilution water valve, comprising a three-way fitting (1), a lower valve body (2), an upper valve body (3), and a valve stem (4), characterized in that, The tee fitting (1) includes an inlet pipe section (11) and a straight pipe section (12). The two ends of the straight pipe section (12) are respectively equipped with a lower valve body (2) and an upper valve body (3). The inlet pipe section (11) intersects the straight pipe section (12) at a 90-degree angle and is close to the tangential direction of the side of the straight pipe section (12), so that the water inlet channel of the inlet pipe introduces liquid in the tangential direction of the straight pipe section (12). The inner wall of the lower valve body (2) is shaped like a frustum, smaller at the front and larger at the back. The valve stem (4) has a valve core (41) at its front end. The valve core (41) is shaped like a frustum, larger at the front and smaller at the back. When the front end of the valve core (41) abuts against the inner wall of the lower valve body (2), it achieves flow interception. The valve stem (4) passes through the center of the upper valve body (3) and slides axially with the upper valve body (3).

2. The linear dilution water valve according to claim 1, characterized in that, A pressure plate (5) is fixed on one side of the outer end of the upper valve body (3). The pressure plate (5) is sleeved on the valve stem (4) and seals the valve stem (4) and the upper valve body (3).

3. The linear dilution water valve according to claim 1, characterized in that, A bracket (6) is fixed to one side of the outer end of the upper valve body (3). An actuator (8) is assembled at the rear end of the bracket (6). An observation window (61) is provided on the side of the bracket (6). The actuator (8) drives the valve stem (4) to extend and retract linearly.

4. The linear dilution water valve according to claim 3, characterized in that, The actuator (8) is connected to the valve stem (4) via a splined fixed shaft (7).

5. The linear dilution water valve according to claim 3, characterized in that, The actuator (8) includes a motor base plate (81), a housing (82), a plate bracket (83), a circuit board (84), and a linear motor (85). The motor base plate (81) is inserted and fixed to the rear end of the bracket (6). The linear motor (85) is fixed to the rear side of the motor base plate (81) and extends the drive shaft into the bracket (6). The plate bracket (83) is fixed to the rear side of the linear motor (85) and fixes the circuit board (84). The housing (82) is sleeved on the rear end of the motor base plate (81) and covers the plate bracket (83), the circuit board (84), and the linear motor (85).

6. The linear dilution water valve according to claim 5, characterized in that, The outer casing (82) is provided with a wire hole (87) for the wires (86) of the linear motor (85) to be led out.

7. The linear dilution water valve according to claim 1, characterized in that, The lower valve body (2) has an outlet (21) at one end, the outlet (21) having a cylindrical outlet channel (23) and a frustum-shaped ring edge (22) on the outside of the outlet (21).

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