Novel small-flow down-spreading valve

Abstract

The utility model relates to the technical field of valve bodies, in particular to a novel small-flow down-spreading valve which comprises a valve body, a valve element, an adjusting screw rod, a quick release part and a micro-flow adjusting part. A cavity is formed in the valve body, a feeding port is formed in the valve body, a discharging port is obliquely formed in the valve body, the valve element is installed in the cavity of the valve body in a sliding mode, the peripheral side of the valve element and the valve body are sealed in a matched mode, and the adjusting screw rod is fixedly connected with the valve element. The quick release piece is mounted on the valve body and is used for quickly dismounting and mounting the valve core; the micro flow adjusting part is arranged on the valve element and used for adjusting flow within a micro range. The device has the advantages that the maintenance cost is reduced, and meanwhile micro-flow adjustment is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of valve bodies, in particular to a novel small-flow downward-expanding valve. BACKGROUND

[0002] The downward-expanding discharge valve is widely used in small test reaction kettles in chemical, pharmaceutical, food and other industries, and mainly functions to control the entry and exit of materials, because when the valve is opened, the movement direction is the same as the medium acting force, so that the torque is small when the valve is opened.

[0003] The downward-expanding discharge valve is widely used in small test reaction kettles in chemical, pharmaceutical, food and other industries, and mainly functions to control the entry and exit of materials, because when the valve is opened, the movement direction is the same as the medium acting force, so that the torque is small when the valve is opened.

[0004] In addition, the existing downward-expanding discharge valve has certain limitations in flow regulation and cannot achieve precise control of small flow, which is particularly important in fine experiments, so it is of great practical significance to develop a downward-expanding discharge valve that is easy to disassemble and can achieve small flow regulation. CONTENT OF THE INVENTION

[0005] In order to reduce maintenance costs and achieve small flow regulation, the application provides a novel small-flow downward-expanding valve.

[0006] The novel small-flow downward-expanding valve provided by the application adopts the following technical scheme:

[0007] The novel small-flow downward-expanding valve comprises:

[0008] A valve body, which is internally hollow, and a feed inlet is formed on the valve body, and a discharge outlet is obliquely arranged on the valve body;

[0009] A valve core, which is slidingly installed in the cavity of the valve body, and the peripheral side of the valve core is sealingly matched with the valve body;

[0010] An adjusting screw, which is fixedly connected with the valve core;

[0011] A quick release part, which is installed on the valve body and is used for quick disassembly and assembly of the valve core;

[0012] A small-flow regulation part, which is arranged on the valve core and is used for small-range flow regulation.

[0013] By adopting the above technical scheme, the design of the quick release part enables the valve core to be quickly disassembled and installed, facilitating maintenance and repair, improving the use convenience and reliability of the equipment, and reducing the maintenance cost and time.

[0014] Optionally, the valve core is provided with a mounting groove, and the quick release part comprises:

[0015] An adjusting valve cover is threadedly connected to one end of the valve body away from the inlet, and the adjusting screw is arranged in the adjusting valve cover and threadedly connected with the adjusting valve cover;

[0016] A sliding block is slidingly installed in the mounting groove and fixedly connected with the adjusting screw.

[0017] By adopting the above technical scheme, the adjusting valve cover is threadedly connected to one end of the valve body, facilitating screwing off and screwing on, so as to realize quick assembly and disassembly of the valve core. The sliding block is fixedly connected with the adjusting screw and slides in the mounting groove, so that the valve core and the adjusting screw can also be disassembled. The quick release part enables the valve core to be quickly disassembled and installed, improving the maintenance convenience of the equipment and reducing the maintenance cost.

[0018] Optionally, the micro-flow adjusting part is a curved notch, which is arranged at the top end of the valve core.

[0019] By adopting the above technical scheme, the design of the curved notch enables the valve core to accurately adjust the flow in a small range, effectively solving the problem that the traditional downward expansion valve cannot accurately control the micro-flow in a relatively fine experiment, and meeting the market demand for small-flow valves.

[0020] Optionally, a plurality of sealing rings are fixedly installed on the valve core.

[0021] By adopting the above technical scheme, the sealing performance between the valve core and the valve body is effectively improved, and the risk of leakage is reduced, especially in a high-pressure or corrosive medium environment, further ensuring the reliability and safety of the valve.

[0022] Optionally, a valve ring is arranged at the inner inlet of the valve body, and the valve ring needs to be finely machined.

[0023] By adopting the above technical scheme, the valve ring and the valve core are finely matched, which can significantly improve the sealing performance and service life of the valve, ensure good sealing effect during long-term use, prevent leakage, and the finely machined valve ring can effectively improve the accuracy of flow control.

[0024] Optionally, the hand wheel is fixedly installed at one end of the adjusting screw away from the sliding block.

[0025] By adopting the above technical scheme, the hand wheel is added, so that the operator can manually rotate the adjusting screw more conveniently, thereby realizing accurate control of the valve core position and effective adjustment of the small flow, and improving the operation convenience of the equipment.

[0026] Optionally, an external thread is arranged on the outer side wall of one end of the valve body (1) away from the hand wheel (8).

[0027] By adopting the above technical scheme, the external thread is arranged, which can facilitate quick connection and sealing of the down valve with other pipelines, reaction kettles or equipment, and improve the installation convenience and reliability of the device.

[0028] Optionally, the valve body (1), the valve core (2) and the valve ring (7) are all metal materials.

[0029] By adopting the above technical scheme, the valve body, the valve core and the valve ring are all metal materials, which improves the corrosion resistance and mechanical strength of the entire valve, prolongs the service life, adapts to the high-temperature and high-pressure working environment, and the metal material also has good machining performance, facilitating precise machining, ensuring high-precision cooperation between parts, and further improving the sealing performance and stability of the valve.

[0030] In summary, the present application has at least one of the following beneficial technical effects:

[0031] 1. The quick-release design of the valve core allows it to be quickly disassembled and maintained, greatly reducing maintenance costs and time, and solving the problem of difficult disassembly and maintenance of the down valve integrated design in the prior art;

[0032] 2. The small flow adjustment part design allows the valve core to accurately adjust the flow in a small range, meeting the demand of small flow and high precision control of small test reaction kettles, and improving the accuracy and reliability of the experiment;

[0033] 3. The sealing design between the valve core and the valve body effectively prevents leakage, ensuring the safety and stability of the reaction process.

[0034] 1. Valve body; 11, inlet; 12, outlet; 2, valve core; 21, mounting groove; 3, adjusting screw; 4, quick-release part; 41, adjusting valve cover; 42, sliding block; 5, small flow adjustment part; 51, curved notch; 6, sealing ring; 7, valve ring; 8, hand wheel. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a structure schematic view of the small flow down valve of the embodiment of the present application;

[0036] Figure 2 is a sectional view of a low-flow valve according to an embodiment of the present application;

[0037] Figure 3 is a structural schematic view of a valve core according to an embodiment of the present application.

[0038] Legend:

[0039] 1, valve body; 11, feed port; 12, discharge port; 2, valve core; 21, mounting groove; 3, adjusting screw; 4, quick release; 41, adjusting valve cover; 42, sliding block; 5, micro-flow adjusting part; 51, curved notch; 6, sealing ring; 7, valve ring; 8, hand wheel. DETAILED DESCRIPTION

[0040] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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 a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The following will be described in detail in combination with the drawings Figures 1-3 The present application will be further described in detail.

[0044] The present application discloses a novel low-flow valve.

[0045] Referring to Figure 1 and Figure 2 The new small flow valve includes a valve body 1, a valve core 2, an adjusting screw 3, a quick release part 4 and a small flow adjusting part 5. The valve body 1 is internally hollow, the valve body 1 is provided with an inlet 11, the valve body 1 is provided with an outlet 12 in an inclined manner, the valve core 2 is slidingly installed in the hollow cavity of the valve body 1, the periphery of the valve core 2 is sealed with the valve body 1, and the adjusting screw 3 is fixedly connected with the valve core 2. The quick release part 4 is installed on the valve body 1, and is used for quick disassembly and assembly of the valve core 2. The small flow adjusting part 5 is arranged on the valve core 2, and is used for small-range flow adjustment.

[0046] In use, the material enters the hollow cavity of the valve body 1 from the inlet 11 of the valve body 1. When it is necessary to adjust the flow or control the inlet and outlet of the material, the adjusting screw 3 can be operated to drive the valve core 2 to slide in the hollow cavity of the valve body 1, the position of the valve core 2 is changed, the size of the passage through which the material can pass is adjusted, and preliminary control of the flow is realized.

[0047] When it is necessary to accurately adjust the small flow, the small flow adjusting part 5 arranged on the valve core 2 is relied on to further finely adjust the flow size. If the valve core 2 fails during use, the quick release part 4 installed on the valve body 1 can be used to quickly disassemble the valve core 2 for maintenance or replacement, so that the valve can continuously and normally work, and the use requirements of small test reaction kettles in the chemical, pharmaceutical and food industries for material inlet and outlet control and small flow accurate adjustment are met.

[0048] Referring to Figure 1 and Figure 2 The quick release part 4 includes an adjusting valve cover 41 and a sliding block 42. The adjusting valve cover 41 is threadedly connected to one end of the valve body 1 away from the inlet 11, the adjusting screw 3 is vertically arranged, the adjusting screw 3 is arranged on the adjusting valve cover 41, and the adjusting valve cover 41 is threadedly connected with the adjusting screw 3. The valve core 2 is provided with a mounting groove 21, and the sliding block 42 is slidingly installed in the mounting groove 21, and the sliding block 42 is fixedly connected with the adjusting screw 3.

[0049] When it is necessary to disassemble the valve core 2 for maintenance or replacement, first, the adjusting valve cover 41 is rotated in the reverse direction, so that it is gradually screwed out along the threads on the valve body 1, and the adjusting valve cover 41 is disassembled from the valve body 1. After the adjusting valve cover 41 is disassembled, the entire adjusting screw 3 together with the sliding block 42 can be relatively separated from the valve body 1 and the valve core 2, the restriction of the valve core 2 at this end is released, the valve core 2 can be conveniently taken out from the valve body 1, and the quick disassembly operation of the valve core 2 is completed.

[0050] In the installation of the valve core 2, the steps are opposite, first put the valve core 2 into the cavity of the valve body 1, make sure that the peripheral side is sealed well with the valve body 1, then align the adjusting screw 3 with the sliding block 42 with the installation groove 21 on the valve core 2, make the sliding block 42 slide into the installation groove 21 smoothly, realize the assembly of the two, then align the adjusting valve cover 41 with the threaded part on the valve body 1, rotate the adjusting valve cover 41 in the positive direction, make it gradually tighten along the threads of the valve body 1, finally realize the stable connection of the adjusting valve cover 41 with the valve body 1, at the same time, the adjusting screw 3 is also reasonably installed and positioned through the adjusting valve cover 41, the quick release part 4 completes the installation work of the valve core 2, so that the lower expansion valve can be normally put into subsequent use, and the control and adjustment of the material in and out and flow are facilitated.

[0051] Referring to Figure 3 , the micro flow adjusting part 5 is a curved notch 51, which is opened at the top end of the valve core 2.

[0052] In the working process of the valve, when the flow needs to be adjusted, usually, the material enters the cavity of the valve body 1 from the inlet 11, and flows towards the outlet 12, and the position of the valve core 2 in the cavity of the valve body 1 plays a key control role in the size of the material flow channel.

[0053] The existence of the curved notch 51 makes the actual channel area through which the material can pass change finely in a smaller range, by operating the adjusting screw 3 to drive the valve core 2 to move up and down, with the change of the position of the valve core 2, the size of the space formed between the curved notch 51 and other structures inside the valve body 1 for the material to pass through will also change accordingly.

[0054] When the valve core 2 moves up, the curved notch 51 is more exposed to the material flow path, so that the effective area through which the material can pass increases slightly, and then the flow increases correspondingly; on the contrary, when the valve core 2 moves down, the part of the curved notch 51 is blocked, the effective area through which the material can pass decreases slightly, and the flow also decreases slightly, so as to realize the accurate adjustment of the micro flow.

[0055] Referring to Figure 2 , the valve core 2 is fixedly installed with a plurality of sealing rings 6, which are always closely attached to the inner wall of the valve body 1, forming a series of sealing barriers to ensure good sealing effect between the valve core 2 and the valve body 1.

[0056] Referring to Figure 2, the inside feed inlet 11 of the valve body 1 is provided with a valve ring 7, which needs to be finely machined. Since the valve ring 7 has high dimensional accuracy after being finely machined, it can form a more accurate matching relationship with the valve core 2 and other structures inside the valve body 1. When the valve core 2 adjusts the flow, especially when it adjusts the flow by a small amount, the initial state of the feed determined by the valve ring 7 is accurate and stable, so that the control of the flow by the curve notch 51 at the top end of the valve core 2 can be more accurately realized, and the accuracy of the whole downward valve in controlling the flow of the material is improved.

[0057] With reference to Figure 2 , the end of the adjusting screw 3 away from the sliding block 42 is fixedly installed with a hand wheel 8. When it is necessary to adjust or control the flow of the material, the operator can directly rotate the hand wheel 8 to realize the corresponding operation. The hand wheel 8 provides a convenient force applying component. Compared with directly operating the adjusting screw 3, the hand wheel 8 increases the contact area of the operation, so that the operator can hold and apply the rotating torque more easily and stably.

[0058] With reference to Figure 2 , the outer side wall of the end of the valve body 1 away from the hand wheel 8 is provided with external threads, which are convenient for being threadedly connected with the corresponding interfaces of the pipelines, pipe fittings or reaction kettles having internal threads.

[0059] With reference to Figure 2 , the valve body 1, the valve core 2 and the valve ring 7 are all made of metal materials. In the long-term and frequent use of the valve, the valve core 2 will continuously slide in the cavity of the valve body 1 to realize the flow adjustment, and the material will continuously wash the components such as the valve body 1 and the valve ring 7. The metal material has good wear resistance and can still maintain its shape and dimensional accuracy under the action of long-time friction and washing, thereby reducing the wear amount of the components and prolonging the service life of the components.

[0060] The implementation principle of the novel small-flow downward valve is as follows: the valve body 1 is connected with the external equipment through external threads, the material enters the internal cavity of the valve body 1 from the feed inlet 11 thereof, the inclined discharge outlet 12 of the valve body 1 is used for discharging the material, the valve core 2 is the key to control the flow of the material, the valve core 2 is moved by rotating the adjusting screw 3 to realize the adjustment of the conventional flow.

[0061] When it is necessary to disassemble the valve core 2, the adjusting valve cover 41 is reversely rotated to be separated from the valve body 1. Since the adjusting screw 3 is connected with the adjusting valve cover 41 and the sliding block 42, the restriction on one end of the valve core 2 is released, so that the valve core 2 can be taken out to realize quick disassembly and maintenance.

[0062] The curve notch 51 at the top end of the valve core 2 is used as a small-flow adjustment part 5. The valve core 2 is slightly moved by fine control of the screw to change the small passage area formed by the notch and the internal structure of the valve body 1, so as to accurately control the small flow and meet the fine experimental requirements.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A new low flow under-expansion valve characterized in that, include: The valve body (1) has a cavity inside, and the valve body (1) has an inlet (11) and an outlet (12) at an inclination. Valve core (2), the valve core (2) is slidably installed in the cavity of the valve body (1), and the periphery of the valve core (2) is sealed with the valve body (1); Adjusting screw (3), the adjusting screw (3) is fixedly connected to the valve core (2); Quick-release component (4), which is installed on the valve body (1), is used for quick disassembly and assembly of the valve core (2); A micro-flow regulating unit (5) is disposed on the valve core (2) and is used for micro-range flow regulation.

2. The novel low flow under-expansion valve according to claim 1, wherein, The valve core (2) is provided with a mounting groove (21), and the quick-release component (4) includes: Adjusting valve cover (41), the adjusting valve cover (41) is threadedly connected to the end of the valve body (1) away from the feed port (11), the adjusting screw (3) passes through the adjusting valve cover (41), and the adjusting valve cover (41) is threadedly connected to the adjusting screw (3); The sliding block (42) is slidably installed in the mounting groove (21) and is fixedly connected to the adjusting screw (3).

3. The novel low flow under-expansion valve of claim 1, wherein, The micro-flow regulating part (5) is a curved notch (51), which is opened at the top of the valve core (2).

4. The novel low flow under-expansion valve of claim 1, wherein, The valve core (2) is fixedly installed with multiple layers of sealing rings (6).

5. The novel low-flow-rate valve according to claim 1, characterized in that, A valve ring (7) is provided at the internal feed inlet (11) of the valve body (1), and the valve ring (7) needs to be precision machined.

6. The novel low-flow-rate valve according to claim 2, characterized in that, A handwheel (8) is fixedly installed at the end of the adjusting screw (3) away from the sliding block (42).

7. The novel low-flow-rate valve according to claim 6, characterized in that, The valve body (1) has an external thread on the outer wall of the end away from the handwheel (8).

8. The novel low-flow-rate valve according to claim 5, characterized in that, The valve body (1), the valve core (2), and the valve ring (7) are all made of metal.

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