Low-temperature small-flow regulating valve

Abstract

The utility model belongs to the field of regulating valves, and particularly relates to a low-temperature small-flow regulating valve. The technology comprises a regulating valve body, the regulating valve body comprises a water outlet channel and a valve element, a sealing assembly used for sealing the water outlet channel is arranged in the water outlet channel, and a regulating assembly used for opening the sealing assembly is arranged on the side wall of the valve element. The sealing effect on the water outlet channel is conveniently improved through the arrangement of the sealing assembly, the service life of the valve element is prolonged while the sealing performance is conveniently improved through the matched use of the sealing assembly and the valve element, the opening degree of the water outlet channel is accurately adjusted through the arrangement of the adjusting assembly, and then the convenience and accuracy during use are improved.

Description

Technical Field

[0001] The utility model belongs to the field of regulating valves, in particular to a low-temperature small-flow regulating valve. Background Art

[0002] A low-temperature regulating valve is a regulating valve used in low-temperature and cryogenic occasions; the low-temperature regulating valve adopts a long-neck valve cover for heat preservation and is equipped with a multi-spring actuator, having the advantages of a compact overall structure, light weight, and good stability. The valve body adopts a precision-cast angular structure and the material is aluminum alloy. The existing device has problems of insufficient sealing performance and inaccurate flow regulation. Content of the Utility Model

[0003] According to the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a low-temperature small-flow regulating valve, which is convenient for improving the sealing effect and more accurately regulating the flow rate.

[0004] The low-temperature small-flow regulating valve includes a regulating valve body, the regulating valve body includes a water outlet channel and a valve core, a sealing component for closing the water outlet channel is arranged in the water outlet channel, and a regulating component for opening the sealing component is arranged on the side wall of the valve core.

[0005] Further, the sealing component includes a sealing block, the sealing block is integrally in a semi-elliptical structure, the sealing block is vertically arranged in the water outlet channel through a connecting rod and is freely rotatable left and right with it.

[0006] Further, the regulating component includes a first rack, the first rack is horizontally fixed on the side wall of the valve core, and a second rack meshing with the first rack is arranged on the side wall of the sealing block.

[0007] Further, a circular groove is horizontally opened on the side wall of the sealing block, the second rack is fixed in the circular groove, and the length of the second rack is equal to or less than the depth of the circular groove.

[0008] Further, the circular groove is opened on the arc surface of the sealing block and is located on the center line of the sealing block.

[0009] Further, the valve core includes a first core body and a second core body, and the second core body is made of an elastic material.

[0010] Further, the circular groove is located in the area of the sealing block except the area in contact with the water outlet channel.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model facilitates increasing the sealing effect on the water outlet channel through the setting of the sealing component, and the cooperation with the valve core also facilitates improving the sealing performance while extending the service life of the valve core. The setting of the adjusting component facilitates precisely adjusting the opening degree of the water outlet channel, thereby improving the convenience and accuracy during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is Figure 1 the enlarged sectional view taken along line A-A in

[0015] Figure 3 is Figure 1 the enlarged view at position B in

[0016] Figure 4 is Figure 2 the enlarged view at position C in

[0017] Figure 5 is a diagram of the utility model in the working state;

[0018] Figure 6 is Figure 5 the enlarged view at position D in

[0019] Names of each component in the figure: 1. regulating valve body; 2. sealing component; 2.1. sealing block; 2.2. connecting rod; 3. valve core; 3.1. first core body; 3.2. second core body; 4. first rack; 5. second rack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further illustrates the present utility model through specific embodiments in conjunction with the accompanying drawings, but it is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present invention.

[0021] Embodiment 1

[0022] A low-temperature small-flow regulating valve described in this embodiment, as shown in Figure 1 and Figure 5 , includes a regulating valve body 1. The regulating valve body 1 includes a water outlet channel and a valve core 3. The regulating valve body 1 is a prior-art low-temperature regulating valve, including a low-temperature valve main body, a valve cavity, a valve core, a first valve plug, a second valve plug, a first valve rod, a second valve rod, and a through cavity, and its patent number is CN202120393201.8;

[0023] A sealing component 2 for closing the water outlet channel is arranged in the water outlet channel, which is convenient for cooperating with the valve core 3 to further increase the sealing effect on the water outlet channel, avoid the influence of the wear of the valve core 3 on the sealing performance of the water outlet channel, and thus improve the service life;

[0024] The side wall of the valve core 3 is provided with an adjusting component for opening the sealing component 2, which is convenient for more accurately adjusting the flow rate, and thus more convenient and accurate to use.

[0025] Embodiment 2

[0026] This embodiment further illustrates the technology, as Figure 2 、 Figure 3 and Figure 4 shown, the sealing block 2.1 is integrally in a semi-elliptical structure. The sealing block 2.1 is vertically arranged in the water outlet channel through a connecting rod 2.2 and is freely rotatable left and right therewith, which is convenient for closing and opening the water outlet channel by rotating the sealing block 2.1. By cooperating with the valve core 3; this paragraph of text as a whole forms a sealing component 2 including a sealing block 2.1 for improving the sealing effect, which is convenient for double-sealing the water outlet channel, improving the sealing effect while improving the accuracy, and preventing leakage caused by slight wear from affecting the use;

[0027] During actual use, a sealing strip can also be arranged on the contact surface between the sealing block 2.1 and the water outlet channel, which is convenient for further increasing the sealing effect on the water outlet channel.

[0028] Embodiment 3

[0029] This embodiment further illustrates the technology, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the first rack 4 is horizontally fixed on the side wall of the valve core 3, and a second rack 5 meshing with the first rack 4 is arranged on the side wall of the sealing block 2.1; this paragraph of text as a whole forms an adjusting component for accurately adjusting the opening degree of the water outlet channel, which is convenient for the first rack 4 and the second rack 5 to mesh when the valve core 3 is rotated, and then drives the sealing block 2.1 to rotate to open and close the water outlet channel, and thus is convenient for precise control;

[0030] The adjusting component can also include a magnet, and an iron block cooperating with the magnet is correspondingly arranged on the sealing block 2.1. By rotating the valve core 3, the magnet adsorbs the iron block, and then drives the sealing block 2.1 to rotate during the rotation of the valve core 3. Finally, the sealing block 2.1 is completely turned over by the first core body 3.1 of the valve core 3 to seal the water outlet channel.

[0031] Further illustration is as follows, as Figure 2 、 Figure 3 、 Figure 4 and Figure 6As shown, an annular groove is horizontally formed on the side wall of the sealing block 2.1, and the second rack 5 is fixed in the annular groove, and the length of the second rack 5 is equal to or less than the depth of the annular groove, which is convenient to avoid the contact end of the valve core 3 and the water outlet channel from contacting the second rack 5 and causing wear to affect the sealing effect, and to avoid the second rack 5 from blocking the valve core 3, so that the water outlet channel cannot be sealed by the sealing block 2.1.

[0032] For further illustration, as Figure 1 , Figure 3 and Figure 5 shown, the annular groove is formed on the arc surface of the sealing block 2.1 and is located on the center line of the sealing block 2.1, which is convenient for the first rack 4 and the second rack 5 to complete meshing when the valve core 3 and the sealing block 2.1 rotate, and then drive the sealing block 2.1 to rotate through the valve core 3 to complete the sealing of the water outlet channel.

[0033] For further illustration, as Figure 1 , Figure 2 and Figure 5 shown, the valve core 3 includes a first core body 3.1 and a second core body 3.2. The second core body 3.2 is made of an elastic material, which is not only convenient for increasing the fitting degree with the water outlet channel to improve the sealing effect, but also convenient for reducing the wear with the water outlet channel, and to a certain extent, it not only improves the service life, but also is convenient for avoiding excessive wear from affecting the sealing effect.

[0034] For further illustration, as Figure 2 and Figure 4 shown, the annular groove is located in the area of the sealing block 2.1 except the area in contact with the water outlet channel, which is convenient for avoiding the influence of the setting of the second rack 5 on the contact surface between the sealing block 2.1 and the water outlet channel, and further avoiding affecting the sealing effect of the sealing block 2.1 on the water outlet channel.

[0035] During the working process, when the water outlet channel is in the open state, first rotate the valve core 3. After the valve core 3 rotates to a certain angle, the first rack 4 and the second rack 5 come into contact and mesh. Then continue to rotate the valve core 3 to drive the second rack 5 on the sealing block 2.1 through the first rack 4 on the valve core 3, so that the sealing block 2.1 rotates, and then the sealing block 2.1 completes the sealing of the water outlet channel. Then continue to rotate the valve core 3 so that the first core body 3.1 of the valve core 3 contacts the plane of the water outlet channel and the sealing block 2.1, and generates extrusion sealing. When the water outlet channel needs to be opened again, rotate the valve core 3 again to make the first rack 4 and the second rack 5 mesh, and rotate the valve core 3 according to the size required to be opened.

Claims

1. A low-temperature, low-flow regulating valve, comprising a regulating valve body (1), the regulating valve body (1) comprising a water outlet channel and a valve core (3), characterized in that: A sealing component (2) for closing the water outlet channel is arranged in the water outlet channel, and an adjusting component for opening the sealing component (2) is arranged on the side wall of the valve core (3).

2. The low temperature and small flow regulating valve according to claim 1 is characterized in that: The sealing assembly (2) comprises a sealing block (2.1), which is of a semi-ellipsoidal structure as a whole. The sealing block (2.1) is vertically arranged in the water outlet channel via a connecting rod (2.2) and is freely rotatable left and right with the connecting rod.

3. The low temperature and small flow regulating valve according to claim 2 is characterized in that: The regulating assembly comprises a first rack (4), the first rack (4) being horizontally fixed on a side wall of the valve core (3), and a second rack (5) meshing with the first rack (4) being provided on a side wall of the sealing block (2.1).

4. The low temperature and small flow regulating valve according to claim 3 is characterized in that: The side wall of the sealing block (2.1) is horizontally provided with an annular groove, the second rack (5) is fixed in the annular groove, and the length of the second rack (5) is equal to or less than the depth of the annular groove.

5. The low temperature and small flow regulating valve according to claim 4 is characterized in that: The annular groove is formed on the arc surface of the sealing block (2.1) and is located on the center line of the sealing block (2.1).

6. The low temperature and small flow regulating valve according to claim 1, characterized in that: The valve core (3) comprises a first core body (3.1) and a second core body (3.2), and the second core body (3.2) is made of elastic material.

7. The low temperature and small flow regulating valve according to claim 5, characterized in that: The annular groove is located in the sealing block (2.1) except the area in contact with the water outlet channel.

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