Four-way valve box for chemical pipeline

Abstract

The utility model discloses a four-way valve box for a chemical pipeline. The four-way valve box comprises a controller, a box body, a box cover, two three-way valves and a pipeline access port, wherein the box body and the box cover are made of corrosion-resistant materials; the front end of the box body is provided with an operation window; the box cover is detachably fixed; a fixing plate is arranged on the back side of the box body, symmetrical pipeline access ports are formed in side plates on the two sides, and each access port is provided with a pipeline protection sleeve; and the two three-way valves are symmetrically arranged in the box body and form a four-way valve structure through a communicating pipe. According to the utility model, a corrosion-resistant material is adopted, the universality and the sealing performance are enhanced through the pipeline access port and the protective sleeve, the maintenance is convenient through the box cover and the operation window, the stable fixation of the pipeline is ensured, the shunting and confluence premixing can be realized by utilizing the controller and the three-way valve, and the chemical conveying requirement is met; meanwhile, a waste liquid discharging mechanism is further arranged, practicability and safety are improved, and the transparent material of the box cover facilitates observation of the waste liquid discharging condition; in addition, the constant reaction temperature can be ensured through the temperature detection alarm device, and the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chemical equipment technical field especially relates to a four -way valve door box for chemical pipeline. BACKGROUND

[0002] Four -way valves are widely used in petroleum, chemical industry, natural gas, power station, metallurgy, national defense scientific research and other fields. In these fields, the stability and safety of the medium control system are very important, and the four -way valve becomes an important equipment indispensable in these fields due to its excellent performance and reliability.

[0003] In the chemical production process, the pipeline system needs to be divided, combined, mixed and the like to meet different process requirements. However, the traditional four -way valve is single in function and cannot meet the diversification requirements of the pipeline system when the chemical pipeline is arranged in modern chemical production. UTILITY MODEL CONTENT

[0004] To solve the problems in the prior art described above, the utility model aims at providing a four -way valve door box for chemical pipeline, which is made of corrosion -resistant material, has enhanced versatility and sealing property through the pipeline inlet and protective sleeve, is convenient to maintain through the box cover and operation window, ensures stable fixation of the pipeline, realizes divided flow, combined flow and premixing through the controller and three -way valve, meets the chemical conveying requirements, has a waste liquid discharge mechanism, improves the practicability and safety, and the transparent material of the box cover is convenient for observing the waste liquid discharge condition. In addition, the temperature detection alarm device can also ensure constant reaction temperature and improve safety.

[0005] To achieve the above -mentioned purpose and other related purposes, the utility model adopts the following technical scheme:

[0006] The utility model provides a four -way valve door box for chemical pipeline, which comprises a controller and a corrosion -resistant material box body, a box cover and two three -way valves in communication.

[0007] The front end face of the box body is provided with an operation window, and the box cover is detachably fixed to the front end face of the box body. The back side of the box body is provided with a fixed plate, and a plurality of oval holes are formed in the fixed plate. Two pipeline inlets are arranged on each side plate of the box body, and the pipeline inlets on different sides are arranged in pairs symmetrically and are used for the inlet and outlet of the chemical pipeline. A pipeline protective sleeve is clamped and fixed on each pipeline inlet, a positioning hole is formed in the pipeline protective sleeve, and the pipeline protective sleeve is sleeved on the chemical pipeline through the positioning hole,

[0008] The two three-way valves are symmetrically arranged inside the box body, a communication pipe is arranged between the two three-way valves, and the four-way valve structure is formed by the communication pipe.

[0009] The controller is signal connected with the two three-way valves, and is used for controlling the on-off, flow direction and flow distribution of each three-way valve channel.

[0010] As a preferred technical scheme, the pipeline protection sleeve has the same outer diameter as the inner diameter of the pipeline inlet, and the positioning hole has the same shape and size as the outer diameter of the chemical pipeline.

[0011] As a preferred technical scheme, the valve box further comprises a waste liquid discharge mechanism, the waste liquid discharge mechanism is arranged at the bottom of the box body, the waste liquid discharge mechanism comprises a discharge pipe and a control ball valve, the discharge pipe is communicated to the box body, and the control ball valve is arranged on the discharge pipe.

[0012] As a preferred technical scheme, the end of the discharge pipe is communicated to an external filter.

[0013] As a preferred technical scheme, a manual valve is arranged outside each of the two three-way valves, and the manual valve is arranged at the valve port close to the two ends of the communication pipe.

[0014] As a preferred technical scheme, a handle is arranged on the box cover.

[0015] As a preferred technical scheme, the box cover is made of transparent material.

[0016] As a preferred technical scheme, the valve box further comprises a temperature detection alarm device, the temperature detection alarm device comprises a temperature sensor and an alarm arranged in the box body, and the temperature sensor and the alarm are signal connected with the controller.

[0017] As a preferred technical scheme, a pipeline fixing member is arranged between the four valve ports of the four-way valve structure and the corresponding pipeline inlets.

[0018] As a further preferred technical scheme, the arrangement direction of the box body is determined according to the arrangement direction of the chemical pipeline, so that the connecting line between the pipeline inlets arranged on the two sides is consistent with the arrangement direction of the chemical pipeline.

[0019] As described above, the utility model has the following beneficial effects:

[0020] (1) The utility model discloses a four-way valve box for chemical pipeline, through the box body design of corrosion -resistant material, the corrosion -resistant performance of valve box to chemical is strengthened, guarantees the long -term stable operation of valve box, through the waste liquid discharge mechanism discharge when cleaning and produce the waste liquid, protects the environment and personnel safety, improves the waste liquid processing efficiency simultaneously, improves the practicability and safety of four -way valve box.

[0021] (2) The utility model discloses a four-way valve box for chemical pipeline, through the design of pipeline access and pipeline protection sleeve, can select suitable pipeline protection sleeve, improves the versatility, ensures the sealing of box body inside, realizes the positioning arrangement of chemical pipeline when wiring simultaneously, ensures the stable fixation of chemical pipeline, avoids the accidental blockage of medium passage caused by bending, in addition, through the oval hole on the fixed plate, the box body is fixed on the wall, plays the function of wire arrangement of chemical pipeline, on the basis of having the neatness, improves the continuity and stability of chemical pipeline arrangement.

[0022] (3) The utility model discloses a four-way valve box for chemical pipeline, through the design of box cover and operation window, through the detachable box cover and operation window, the operation is simple, and it is convenient for four -way valve box internal assembly, overhaul and maintenance, can effectively prevent dust simultaneously, and still can be manually valve through the operation window under special circumstances, further through the transparent material design of box cover, it is convenient for observing the inside situation of box body, improves the safety when cleaning.

[0023] (4) The utility model discloses a four-way valve box for chemical pipeline, through two three -way valves and the valve structure of intercommunication pipe intercommunication constitutes four -way, realizes the shunt and confluent premixing of chemical pipeline connection, is convenient for flexible switching different pipeline flow direction, ensures the high efficiency and safety of chemical delivery, simultaneously, through the signal connection of controller and three -way valve, can realize the control of three -way valve passage, flow direction and flow distribution, can satisfy the demand of modern chemical pipeline system to shunt, confluent, mixing and other operations, has good security and maintainability simultaneously, is applicable to various chemical production environment, improves the accuracy and safety of chemical delivery.

[0024] (5) The utility model discloses a four-way valve box for chemical pipeline, through temperature detection alarm device design, can real -time monitoring the temperature in the box body, when temperature exceeds safety threshold value, triggers the alarm and sends out sound and light alarm, ensures the reaction temperature constant of each medium in the valve box, improves the security. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the three -dimensional structure schematic diagram of four -way valve box for chemical pipeline in the utility model when hiding inside valve structure.

[0026] Figure 2This is a left view of a four-way valve box for chemical pipelines according to this utility model.

[0027] Figure 3 This is a front view of a four-way valve box for chemical pipelines according to this utility model, arranged horizontally with the box cover hidden.

[0028] Figure 4 This is a front view of a four-way valve box for chemical pipelines according to this utility model, arranged vertically with the box cover hidden.

[0029] The specific annotations in the attached drawings are as follows: 1. Box body; 2. Box cover; 3. Handle; 4. Fixing plate; 5. Pipeline inlet; 6. Pipeline protective sleeve; 7. Control ball valve; 8. Connecting pipe; 9. Manual valve; 10. Pipeline fixing component. Detailed Implementation

[0030] To better understand the purpose, structure, and function of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0031] In the description of this utility model, it should be noted that the positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" are based on the positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore should not be construed as a limitation of this utility model.

[0032] Example 1

[0033] like Figures 1 to 3 As shown, this embodiment provides a four-way valve box for chemical pipelines, including a box body 1, a box cover 2, two connected three-way valves and a controller.

[0034] The box body 1 is rectangular, and the front end face of the box body 1 is provided with an operation window, and the box body 1 is made of corrosion-resistant material, such as polypropylene (PP) material or stainless steel material. Two pipeline inlets 5 are arranged on the two side plates of the box body 1, and the pipeline inlets 5 on different sides are symmetrically arranged in pairs, which are used for the chemical pipeline inlet and outlet valve box; the pipeline protection sleeve 6 is fixedly arranged on each pipeline inlet 5, the pipeline protection sleeve 6 has the same outer diameter as the inner diameter of the pipeline inlet 5, the pipeline protection sleeve 6 is provided with a positioning hole, the positioning hole has the same shape and size as the chemical pipeline, and the pipeline protection sleeve 6 is sleeved on the chemical pipeline through the positioning hole, so that when the chemical pipeline has different shapes and sizes, the sealing performance of the box body 1 can be ensured by selecting the appropriate pipeline protection sleeve 6, and meanwhile, the center of each pipeline inlet 5 is aligned with the center of the valve port of the corresponding three-way valve, and the positioning hole is arranged at the center of the pipeline protection sleeve 6, so that the positioning and arrangement of the chemical pipeline during wiring can be realized, and the stable fixation of the chemical pipeline can be ensured, and the bending of the chemical pipeline to cause accidental blockage of the medium channel can be avoided. Preferably, the positioning hole is provided with a sealing plug, and when the pipeline protection sleeve 6 is not sleeved on the chemical pipeline, the sealing plug is fixedly arranged in the positioning hole, so that the sealing performance of the valve box can be ensured, and dust accumulation in the valve box during transportation or long-term idle can be avoided, and the influence of dust on the medium during connection of the chemical pipeline can be reduced.

[0035] The box cover 2 is detachably fixed to the front end face of the box body 1 by a fastener, which is used to block the operation window, and the fastener adopts a bolt and nut assembly. Through the detachable box cover 2 and the operation window, the internal maintenance and assembly of the four-way valve box can be facilitated, dust can be effectively prevented, and the manual valve 9 door can be manually operated through the operation window in special cases. Preferably, the box cover 2 is provided with a handle 3 for assisting in the assembly and disassembly of the box cover 2. In another embodiment, the box cover 2 is made of transparent material, so that the internal condition of the box body 1 can be observed through the box cover. When the chemical pipeline or the internal three-way valve is cleaned, the emptying state of the waste liquid can be confirmed without opening the box cover.

[0036] The box body 1 is provided with two three-way valves, the two three-way valves are symmetrically arranged, and a communication pipe 8 is arranged between the opposite valve ports of the two three-way valves. The two three-way valves are connected through the communication pipe 8 to form a four-way valve structure in the shape of H, which is used for the split and flow mixing of the chemical pipeline connection, facilitates the flexible switching of different pipeline flow directions, and ensures the efficiency and safety of chemical delivery. The positions of the four valve ports on the four-way valve structure correspond to the positions of the pipeline inlets 5 on the box body 1 one by one; in the preferred embodiment, the pipeline fixing member 10 is arranged between the four valve ports on the four-way valve structure and the corresponding pipeline inlets 5, so as to ensure the stability of the pipeline connection of the chemical pipeline.

[0037] The controller is signal connected with the two three-way valves for controlling the opening and closing, flow direction and flow distribution of the channels of the three-way valves; specifically, each of the two three-way valves is provided with a valve core, which is signal connected with the controller and controlled by the controller to rotate at a certain angle for adjusting the opening and closing, flow direction and flow distribution in the channel; in a preferred embodiment, each of the two three-way valves is externally provided with a manual valve 9, which is located at a valve port near the two ends of the communication pipe 8, and when an emergency occurs, such as the controller stops running, the corresponding three-way valve core can be controlled to rotate to a closed state through the manual valve 9, so as to cut off the medium channel and prevent the accident from expanding.

[0038] In the embodiment, the controller is a PLC controller, and the control of the opening and closing, flow direction and flow distribution of the three-way valve channel by the PLC controller belongs to the prior art, and is not an improvement on the PLC program itself; the opposite valve ports of one of the three-way valves are inlet A and outlet B, respectively, and the opposite valve ports of the other three-way valve are inlet C and outlet D, respectively, and the communication pipe 8 can realize flexible switching between the four valve ports A, B, C and D, thereby ensuring the efficiency and safety of chemical delivery.

[0039] In actual work, when the medium enters from the inlet A, the valve core can be adjusted by the controller to make the medium flow to the outlet B or to the outlet D after passing through the communication pipe 8, and similarly, when the medium enters from the inlet C, the valve core can be adjusted by the controller to make the medium flow to the outlet D or to the outlet B after passing through the communication pipe 8, thereby realizing multi-path selection and optimizing delivery efficiency; at the same time, when different media enter from the inlets A and C, respectively, the controller can control the opening degree of the corresponding three-way valve according to the set flow parameter to accurately control the flow size in the medium channel and the mixing ratio of each medium, thereby ensuring the stability and safety of the chemical reaction and improving the reliability of the overall process flow. Specifically, if the flow needs to be increased, the controller controls the opening degree of the three-way valve to be increased; if the flow needs to be reduced, the controller controls the opening degree of the three-way valve to be reduced.

[0040] The valve box further comprises a waste liquid discharge mechanism for discharging waste liquid generated during cleaning; the waste liquid discharge mechanism is located at one side of the bottom of the box body 1, and the waste liquid discharge mechanism comprises a discharge pipe and a control ball valve 7, the discharge pipe is connected to the box body 1, and the control ball valve 7 is arranged on the discharge pipe.

[0041] In another embodiment, the end of the discharge pipe can be connected to an external filter for preliminarily removing solid particles and impurities in the waste liquid, thereby improving the waste liquid treatment efficiency, reducing medium pollution, protecting the environment and personnel safety.

[0042] In actual work, when cleaning the valve structure and the inside of the chemical pipeline, the medium flow in the chemical pipeline is cut off, the chemical pipeline is connected to the external cleaning device, the box cover 2 is opened, the connection between the lower valve port in the valve structure and the chemical pipeline is removed, the box cover 2 is closed, the external cleaning device is opened, and the cleaning liquid in the external cleaning device flows through the inside of the chemical pipeline and the inside of the valve structure of the four-way valve, and is discharged into the box 1, so that the airtightness during cleaning can be ensured, and leakage of the medium or the cleaning liquid is avoided. After cleaning, the waste liquid is discharged from the box 1 through the waste liquid discharge mechanism and is treated in a special waste liquid treatment facility; wherein the cleaning liquid can be water or a cleaning agent special for the medium in the chemical pipeline. Regular cleaning can improve the service life of the chemical pipeline and the valve structure, reduce the failure rate caused by impurity accumulation, reduce the maintenance cost, improve the quality and transportation efficiency of the medium in the chemical pipeline, and ensure the continuity and stability of the chemical pipeline arrangement.

[0043] The back side of the box 1 is provided with a fixing plate 4, a plurality of oval holes are formed in the fixing plate 4, and the box 1 is fixed to the wall surface through the fixing plate 4, so that the box 1 can also play a role of arranging and arranging the chemical pipeline. The arrangement direction of the box 1 is determined according to the arrangement direction of the chemical pipeline, so that the connecting line between the pipeline inlet ports 5 on the two sides is consistent with the arrangement direction of the chemical pipeline; as shown in Figure 3 When the chemical pipeline is arranged horizontally, the box 1 is rotated at an angle, and the pipeline inlet ports 5 are symmetrically arranged left and right; as shown in Figure 4 When the chemical pipeline is arranged vertically, the box 1 is rotated at an angle until the pipeline inlet ports 5 are symmetrically arranged up and down. When the waste liquid discharge mechanism is arranged on the valve box, the box 1 is arranged to ensure that the waste liquid discharge mechanism is always located at the lowest position.

[0044] Example 2

[0045] The four-way valve box for the chemical pipeline provided in this embodiment is based on the four-way valve box for the chemical pipeline provided in Embodiment 1, and further comprises a temperature detection alarm device for monitoring the temperature in the box 1 in real time. The temperature detection alarm device comprises a temperature sensor arranged in the box 1 and an alarm, and the temperature sensor and the alarm are both signal-connected with the controller. In this embodiment, the temperature sensor is arranged on the communication pipe 8, and a safety threshold value of temperature is pre-set in the controller. The safety threshold value is set according to the characteristics of the medium in the chemical pipeline.

[0046] In actual work, the temperature sensor converts the detected temperature signal into an electric signal and transmits the electric signal to the controller in real time, the controller processes the received electric signal and compares it with a preset safety threshold, when the detected temperature exceeds the safety threshold, the controller judges that the temperature is abnormal, sends a signal to the alarm, triggers the alarm to issue an audible and light alarm, can ensure that the reaction temperature of each medium in the valve box is constant, and can also avoid damage or denaturation caused by a large amount of heat generated when different media are mixed in the communication pipe 8, and improve safety.

[0047] It should be noted that the controller in the embodiment adopts a PLC controller, and real-time monitoring and alarm functions of the temperature are achieved by the PLC controller, which belongs to the prior art, and is not an improvement on the PLC program itself.

[0048] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any changes or equivalent replacements of the features and embodiments made by those skilled in the art without departing from the spirit and scope of the present application are included. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are included in the scope of the present application.

Claims

1. A four-way valve box for chemical pipelines comprising a controller, characterized in that, It also includes the box (1), the box cover (2) and the two three-way valves of the communication; The front end face of the box (1) is provided with an operation window, and the box cover (2) is detachably fixed to the front end face of the box (1); the back side of the box (1) is provided with a fixed plate (4), and a plurality of elliptical holes are formed in the fixed plate (4); two pipeline inlets (5) are arranged on each side plate of the box (1), and the pipeline inlets (5) located on different sides are arranged in pairs and symmetrically, which are used for the inlet and outlet of the chemical pipeline; a pipeline protection sleeve (6) is clamped and fixed on each pipeline inlet (5), and a positioning hole is formed in the pipeline protection sleeve (6), and the pipeline protection sleeve (6) is sleeved on the chemical pipeline through the positioning hole, The two three-way valves are symmetrically arranged and located in the box (1), and a communication pipe (8) is arranged between the two three-way valves, and a four-way valve structure is formed by the communication pipe (8); the positions of the four valve ports of the four-way valve structure correspond one by one to the positions of the pipeline inlets (5) on the box (1). The controller is signal connected with the two three-way valves, and is used for controlling the on-off, flow direction and flow distribution of each three-way valve channel.

2. A four-way valve box for chemical lines according to claim 1, characterized in that, The pipeline protection sleeve (6) has the same outer diameter as the inner diameter of the pipeline inlet (5), and the positioning hole has the same shape and size as the outer diameter of the chemical pipeline.

3. A four-way valve box for chemical lines according to claim 2, characterized in that, It also includes a waste liquid discharge mechanism, which is located at the bottom of the box (1), and the waste liquid discharge mechanism includes a relief pipe and a control ball valve (7), and the relief pipe is communicated to the box (1), and the control ball valve (7) is arranged on the relief pipe.

4. A four-way valve box for chemical lines according to claim 3, characterized in that, The end of the relief pipe is communicated to an external filter.

5. A four-way valve box for chemical lines according to claim 1, characterized in that, Each of the two three-way valves is provided with a manual valve (9) located near the valve port at the two ends of the communication pipe (8).

6. A four-way valve box for chemical lines according to claim 1, characterized in that, The box cover (2) is provided with a handle (3).

7. A four-way valve box for chemical lines according to claim 1, characterized in that, The box cover (2) is made of transparent material.

8. A four-way valve box for chemical lines according to claim 1, characterized in that, It also includes a temperature detection alarm device, which includes a temperature sensor and an alarm arranged in the box (1), and the temperature sensor and the alarm are signal connected with the controller.

9. A four-way valve box for chemical lines according to claim 1, characterized in that, The four valve ports of the four-way valve structure and the corresponding pipeline inlets (5) are provided with a pipeline fixing piece (10).

10. A four-way valve box for chemical lines according to any one of claims 1-9, characterized in that, The arrangement direction of the box (1) is determined according to the arrangement direction of the chemical pipeline, so that the connecting line between the pipeline inlets (5) located on the two sides is consistent with the arrangement direction of the chemical pipeline.

Images