Valve group capable of preventing crystallization

Abstract

The utility model relates to the field of liquid low-temperature crystallization reaction in the chemical industry, in particular to a crystallization-preventing valve group, which comprises a material guide pipe, two ends of the material guide pipe are respectively connected with a discharge port of a reaction kettle and a valve group guide rail; a discharge hole is formed in the side part of the material guide pipe; a piston sliding block is arranged in the material guide pipe in a sealing and sliding manner; the piston sliding block is connected with a valve set opening and closing structure movably connected to the valve set guide rail, and the valve set opening and closing structure drives the piston sliding block to slide in the material guiding pipe so as to close or open the discharging opening. When crystals and liquid in the reaction kettle are mixed, the piston sliding block blocks the discharge port in the side portion of the material guide pipe, and the upper surface of the piston sliding block is matched with the opening in the top of the material guide pipe, so that no crystal sediment exists in the interior of the material guide pipe when the valve group is closed in the crystal and liquid mixture in the reaction kettle, and when the valve group is opened, no crystal sediment exists in the material guide pipe. And the piston sliding block relieves blocking of an opening in the top of the material guiding pipe and a discharging opening, and the risk of crystallization blocking is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of liquid low temperature crystallization reaction of chemical industry, more particularly to a valve group for preventing crystallization. BACKGROUND

[0002] There are many processes involving low temperature crystallization reaction in the production process of chemical industry, and the solid-liquid mixture after crystallization needs to be discharged into the next production link. Due to production requirements, the discharge port of the low temperature crystallization reactor is usually designed with a protruding pipeline before connecting the control valve.

[0003] The common valve body on the market cannot block the material deposition in the pipeline between the bottom of the reactor and the valve body. Although the reactor has a stirring device during the crystallization process of the material, the solid particles will be broken and fluidized, but the material in the discharge pipeline is difficult to be stirred, so the material in the discharge pipeline is prone to form a whole crystalline block, which blocks the pipeline and affects the flow. Not only is the cost of dredging high, but also the production efficiency is affected, and if the dredging is not timely, it may cause production accidents and seriously threaten the safety of production. SUMMARY

[0004] The utility model aims at providing a valve group for preventing crystallization, which can effectively solve the problems in the prior art.

[0005] The utility model achieves the above-mentioned purpose by the following technical scheme:

[0006] A valve group for preventing crystallization, comprising: a material guide pipe, both ends of the material guide pipe being connected with the discharge port of the reactor and the valve guide rail of the valve group respectively; a discharge port being arranged on the side of the material guide pipe, a piston sliding block being sealingly arranged in the material guide pipe; the piston sliding block being connected with a valve opening and closing structure movably arranged on the valve guide rail, the valve opening and closing structure driving the piston sliding block to slide in the material guide pipe to close or open the discharge port.

[0007] Preferably, the inner diameter of the material guide pipe is the same as the inner diameter of the discharge port of the reactor, the piston sliding block can slide from the inside of the material guide pipe to the inside of the discharge port of the reactor under the driving of the valve opening and closing structure, and can be inserted into the bottom of the reactor.

[0008] Preferably, the diameter of the piston sliding block is greater than the diameter of the material guide pipe.

[0009] Preferably, the valve opening and closing structure comprises: a movable rod, one end of the movable rod being connected with the piston sliding block through a movable connection structure, the movable rod being movably connected in the middle part to the valve guide rail, the other end of the movable rod being connected with a controller for controlling the relative movement of the movable rod and the piston sliding block.

[0010] As preferably, the movable rod is screwed on the valve group guide rail; the controller comprises a movable hand wheel or a driving motor fixedly connected with the movable rod.

[0011] As preferably, the movable rod is slidably connected with the spline slide groove of the valve group guide rail through spline; the controller comprises a movable hand wheel or a driving cylinder fixedly connected with the movable rod.

[0012] As preferably, a tension spring is sleeved on the movable rod, which is located between the piston sliding block and the valve group guide rail, or the tension spring is located between the movable hand wheel and the valve group guide rail.

[0013] As preferably, the material guide pipe and the discharge port of the reaction kettle are sealingly connected through detachable connecting piece one, and the material guide pipe and the valve group guide rail are sealingly connected through detachable connecting piece two.

[0014] As preferably, the detachable connecting piece one and the detachable connecting piece two are both in the structure of a clamp.

[0015] As preferably, the detachable connecting piece one and the detachable connecting piece two are both in the structure of a clamp.

[0016] The embodiment of the utility model brings following beneficial effects:

[0017] The utility model discloses a valve group for preventing crystallization, when the crystal and liquid in the reaction kettle mix, the piston sliding block is blocked at the discharge port of the material guide pipe side part, and the piston sliding block upper surface is matched in the opening of the material guide pipe top, so that the crystal and liquid mixture in the reaction kettle will not have crystalline precipitate in the material guide pipe inside when the valve group is closed, when the valve group opens, the piston sliding block removes the blockage of the material guide pipe top opening and discharge port, and at this time, the crystal and liquid mixture are discharged through the discharge port of the material guide pipe, reduce the risk of crystallization and blockage, and its simple structure, convenient maintenance, rationally avoid the phenomenon that the material deposits into a big piece and causes the blockage in the cooling process, can effectively improve the production efficiency and reduce the risk of production accidents.

[0018] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. DRAWINGS

[0019] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the related art, the following will briefly introduce the drawings needed to be used in the specific embodiment or related art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 An open state diagram of a crystallization-preventing valve group provided for the first embodiment;

[0021] Figure 2 A close state diagram of a crystallization-preventing valve group provided for the first embodiment;

[0022] Figure 3 A close state diagram of a crystallization-preventing valve group provided for the second embodiment;

[0023] Figure 4 An A-A view of a crystallization-preventing valve group provided for the second embodiment. DETAILED DESCRIPTION

[0024] In order to enable persons skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor fall within the protection scope of the present application.

[0025] It should be noted that when an element is referred to as being “fixed” or “disposed” on another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being “connected” to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms “length”, “width”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms “first”, “second” are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with “first”, “second” can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of “a plurality of”, “several” is two or more, unless otherwise specifically limited.

[0028] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of this application, should still fall within the scope of the technical content disclosed in this application. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application.

[0029] The following is in conjunction with the appendix Figures 1-4 The present invention will be described in further detail below.

[0030] like Figures 1-4 As shown, a valve assembly for preventing crystallization includes: a feed pipe 2, the two ends of which are connected to the outlet of the reactor 10 and the valve assembly guide rail 6, respectively; an outlet 8 is provided on the side of the feed pipe 2, and a piston slider 9 is sealed and slidably provided inside the feed pipe 2; the piston slider 9 is connected to a valve assembly opening and closing structure movably connected to the valve assembly guide rail 6, and the valve assembly opening and closing structure drives the piston slider 9 to slide inside the feed pipe 2 to close or open the outlet 8.

[0031] This utility model discloses a valve assembly for preventing crystallization. Designed specifically for conveying materials after low-temperature crystallization reactions in the chemical industry, the valve assembly's opening and closing structure drives a piston slider 9 to slide within the feed pipe 2 during the mixing of crystals and liquid in the reactor 10. This controls the piston slider 9 to block the discharge port 8 on the side of the feed pipe 2, and the upper surface of the piston slider 9 engages with the opening at the top of the feed pipe 2. This prevents crystalline deposits from entering the feed pipe 2 when the valve assembly is closed. When the valve assembly is open, the piston slider 9 releases the blockage on the top opening and discharge port 8 of the feed pipe 2, allowing the crystal and liquid mixture to enter and exit through the discharge port 8. This reduces the risk of crystallization blockage. Furthermore, its simple structure and convenient maintenance effectively prevent large crystal deposits from forming during the cooling process, thus improving production efficiency and reducing the risk of production accidents.

[0032] The inner diameter of the material guide pipe 2 is the same as the inner diameter of the discharge port of the reaction kettle 10. The piston sliding block 9 can slide from the inside of the material guide pipe 2 to the inside of the discharge port of the reaction kettle 10 under the drive of the valve group opening and closing structure, and can be inserted into the bottom of the reaction kettle 10. When the valve group is in the closed state, the top end of the sliding block 9 can be pushed to be flush with or slightly protrude from the bottom of the reaction kettle 10, so that all the materials are stirred in the reaction kettle 10, and the material is completely blocked from entering the inside of the material guide pipe 2 to prevent the problem of blockage caused by large crystals entering the inside of the material guide pipe 2. The diameter of the piston sliding block 9 is slightly larger than the diameter of the material guide pipe 2, and the diameter of the piston sliding block 9 is 0.2-3mm larger than the diameter of the material guide pipe 8, which ensures the sealing performance when the valve group is closed. The material of the piston sliding block 9 is one of silicone rubber, fluororubber or nitrile rubber. When the valve group is opened, the top end of the piston sliding block 9 reaches the lower edge of the discharge port 8, which ensures the discharge effect.

[0033] The valve group opening and closing structure comprises: a movable rod 7, one end of the movable rod 7 is connected with the piston sliding block 9 through a movable connection structure 3, so that the two can relatively rotate, the middle part of the movable rod 7 is movably connected on the valve group guide rail 6, and the other end of the movable rod 7 is connected with a controller for controlling the relative movement of the movable rod 7 and the piston sliding block 9. The controller can control the movable rod 7 to drive the piston sliding block 9 to slide in the material guide pipe 2, so as to adjust the opening or closing of the valve group.

[0034] In the first embodiment, as shown in Figure 1 and Figure 2 , the movable rod 7 is threadedly connected on the valve group guide rail 6; and the controller comprises: a movable hand wheel 5 or a driving motor fixedly connected with the movable rod 7.

[0035] When it is necessary to control the opening and closing of the valve group, the movable hand wheel 5 is controlled to rotate, or the driving motor is controlled to be started, so that the movable hand wheel 5 or the driving motor drives the movable rod 7 to rotate, the contact position of the movable rod 7 and the valve group guide rail 6 can be changed, at this time, the movable rod 7 can drive the piston sliding block 9 to slide in the material guide pipe 2, so as to adjust the opening or closing of the valve group.

[0036] In the second embodiment, as shown in Figure 3 and Figure 4 A-A view, the movable rod 7 is slidably connected in the spline sliding groove of the valve group guide rail 6 through spline; and the controller comprises: a movable hand wheel 5 or a driving air cylinder fixedly connected with the movable rod 7, and the driving air cylinder is fixedly connected with the valve group guide rail 6 away from the movable rod 7.

[0037] When the valve group needs to be controlled to open or close, when the controller is the active hand wheel 5, when the valve group is opened, the active hand wheel 5 can pull the active rod 7 and the spline to slide downward in the spline sliding groove of the valve group guide rail 6, thereby driving the piston sliding block 9 to slide downward in the guide pipe 2, when the valve group is closed, the active hand wheel 5 can push the active rod 7 and the spline to slide upward in the spline sliding groove of the valve group guide rail 6, thereby driving the piston sliding block 9 to slide upward in the guide pipe 2, after being closed, the locking bolt connected to the side of the valve group guide rail 6 is inserted into the positioning hole of the active rod 7, the relative fixation of the valve group guide rail 6 and the active rod 7 is realized, and the stability of the closed valve group is ensured; when the controller is the driving cylinder, the driving cylinder can control the active rod 7 and the spline to slide upward and downward in the spline sliding groove of the valve group guide rail 6 after being started, thereby realizing the quick opening and closing of the valve and the like.

[0038] The active rod 7 is sleeved with a tension spring, the tension spring is located between the piston sliding block 9 and the valve group guide rail 6, or the tension spring is located between the active hand wheel 5 and the valve group guide rail 6, and is used for improving the position stability of the piston sliding block 9 after sliding.

[0039] The guide pipe 2 and the discharge port of the reaction kettle 10 are connected in a detachable manner through the detachable connecting piece one 1, and the guide pipe 2 and the valve group guide rail 6 are connected in a detachable manner through the detachable connecting piece two 4.

[0040] The detachable connecting piece one 1 and the detachable connecting piece two 4 can both be a clamp structure, or the detachable connecting piece one 1 and the detachable connecting piece two 4 can both be a flange structure. The connecting structure between the detachable connecting piece one 1 and the detachable connecting piece two 4 can also be other structures convenient for dismounting and mounting, which can facilitate the dismounting and maintenance of the valve group, and details are not described here.

[0041] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to each other. It should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0042] It also needs to be explained that in the present specification, the relational terms such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims

1. A valve train for preventing crystallization, characterized by The utility model relates to a kind of reaction kettle, including: Material guide pipe (2), both ends of material guide pipe (2) are connected with the discharge port of reaction kettle (10) and valve group guide rail (6) respectively;Material guide pipe (2) side is equipped with discharge port (8), and piston sliding block (9) is sealingly arranged in material guide pipe (2);Piston sliding block (9) is connected with valve group opening and closing structure movably connected on valve group guide rail (6), and valve group opening and closing structure drives piston sliding block (9) to slide in material guide pipe (2), to close or open discharge port (8).

2. A valve group for preventing crystallization according to claim 1, characterized in that, The inner diameter of material guide pipe (2) is same with the inner diameter of the discharge port of reaction kettle (10), and piston sliding block (9) can slide from the inside of material guide pipe (2) to the inside of the discharge port of reaction kettle (10) under the driving of valve group opening and closing structure, and can be inserted into the bottom of reaction kettle (10).

3. A valve group for preventing crystallization according to claim 1 or 2, characterized in that The diameter of piston sliding block (9) is greater than the diameter of material guide pipe (2).

4. A valve cluster to prevent crystallization as defined in claim 1, wherein The valve group opening and closing structure includes: movable rod (7), one end of movable rod (7) is connected with piston sliding block (9) through movable connection structure (3), movable rod (7) is movably connected in the middle on valve group guide rail (6), and the other end of movable rod (7) is connected with controller for controlling the relative motion of movable rod (7) and piston sliding block (9).

5. A valve cluster to prevent crystallization as defined in claim 4, wherein The movable rod (7) is screw-connected on the valve group guide rail (6);The controller includes: movable hand wheel (5) or driving motor fixedly connected with movable rod (7).

6. A valve cluster to prevent crystallization as defined in claim 4, wherein The movable rod (7) is spline-connected in the spline sliding groove of valve group guide rail (6) by spline sliding;The controller includes: movable hand wheel (5) or driving cylinder fixedly connected with movable rod (7), and the end of driving cylinder away from movable rod (7) is fixed on valve group guide rail (6).

7. A valve group for preventing crystallization according to claim 5 or 6, characterized in that Tension spring is sleeved on movable rod (7), and tension spring is located between piston sliding block (9) and valve group guide rail (6), or tension spring is located between movable hand wheel (5) and valve group guide rail (6).

8. A valve cluster to prevent crystallization as defined in claim 1, wherein, Material guide pipe (2) and the discharge port of reaction kettle (10) are sealingly connected through detachable connecting piece one (1), and material guide pipe (2) and valve group guide rail (6) are sealingly connected through detachable connecting piece two (4).

9. A valve cluster to prevent crystallization as defined in claim 2 wherein, Detachable connecting piece one (1) and detachable connecting piece two (4) are both clamp structures.

10. A valve cluster to prevent crystallization as defined in claim 2, wherein Detachable connecting piece one (1) and detachable connecting piece two (4) are both clamp structure flange structures.

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