阅读说明：本技术 一种掺合针阀 (Blending needle valve ) 是由 林哲 杨林 陶俊宇 朱祖超 张昊 徐豪 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种掺合针阀,包括阀壳主体、阀针主体、异型密封圈、阀壳盖,阀壳主体由阀壳、隔板、进口管道、出口管道组成,隔板开有圆锥台型通孔,阀壳主体内装有阀针主体,阀针主体一端设有开口而另一端为闭口的圆锥台,圆锥台上开有第二圆环型凹槽,阀针管段一开有四个第三圆环型凹槽,阀针管段二开有圆弧槽,阀壳和阀壳盖间置有异型密封圈。该掺合针阀可以对两种流体进行控制,可以实现三种流体种类出口,包括两种单一流体以及一种混合流体,具有较优越的控制性能；由于隔板的阻碍作用和进口管道与出口管道高度的落差,迫使主流流体改变两次流动方向,会导致流体在穿过隔板的掺合区域产生湍流,湍流的发生强化了流体掺合的能力。(The invention discloses a blending needle valve, which comprises a valve casing main body, a valve needle main body, a special-shaped sealing ring and a valve casing cover, wherein the valve casing main body consists of a valve casing, a partition plate, an inlet pipeline and an outlet pipeline, the partition plate is provided with a cone frustum-shaped through hole, the valve needle main body is arranged in the valve casing main body, one end of the valve needle main body is provided with an opening, the other end of the valve needle main body is a closed cone frustum, the cone frustum is provided with a second circular groove, the first valve needle pipe section is provided with four third circular grooves, the second valve needle pipe section is provided with an arc groove, and the special-shaped sealing ring is arranged between the valve casing and the valve casing cover. The blending needle valve can control two fluids, can realize three fluid type outlets, including two single fluids and one mixed fluid, and has superior control performance; the turbulent flow enhances the fluid blending capability by forcing the main flow to change direction twice due to the obstruction of the baffle and the drop in height of the inlet and outlet ducts, which results in turbulence in the fluid in the blending region across the baffle.)

1. The utility model provides a blend needle valve, includes valve casing main part (1), needle main part (2), abnormal shape sealing washer (3), valve housing cover (4), its characterized in that, valve casing main part (1) comprises valve casing (114), baffle (14), inlet pipeline (15), outlet pipeline (113) and fourth flange face (115), valve casing (114) top is equipped with first flange face (11), first flange face (11) center is equipped with the intercommunication vertical needle hole (12) of valve casing (114) inner chamber, it has a plurality of first bolt holes (13) to open on first flange face (11), valve casing (114) inner chamber is set up by oblique diagonal angle two chambeies are separated into to baffle (14), be equipped with circular truncated cone type through-hole (110) and semicylindrical baffle (19) on baffle (14), circular truncated cone type through-hole (110) are located under valve needle hole (12), the semi-cylindrical baffle (19) is vertically arranged, the bottom end inner edge of the semi-cylindrical baffle coincides with the top end edge of the cone frustum-shaped through hole (110), the valve casing (114) is provided with an inlet pipeline (15) communicated with a right lower cavity of the valve casing, the inlet pipeline (15) is provided with a second flange surface (16), the second flange surface (16) is provided with a plurality of second bolt holes (17), the valve casing (114) is provided with an outlet pipeline (113) communicated with a left upper cavity of the valve casing, the outlet pipeline (113) is provided with a third flange surface (112), the third flange surface (112) is provided with a plurality of third bolt holes (111), the front end edge of the valve casing (114) extends outwards to form a fourth flange surface (115), and the fourth flange surface (115) is provided with a plurality of fourth bolt holes (117);

the valve needle main body (2) is installed in the valve casing main body (1), the valve needle main body (2) is composed of a valve needle pipe section I (21), a valve needle pipe section II (22) and a cone frustum (23), the valve needle pipe section I (21) is sleeved in the valve needle hole (12), the outer wall of the valve needle pipe section II (22) is tightly attached to the inner wall of the semi-cylindrical baffle (19), an arc groove (25) is formed in the valve needle pipe section II (22), and the cone frustum (23) can be tightly attached to the cone frustum through hole (110);

the inner edge of the fourth flange surface (115) and the front end of the partition plate (14) are provided with a special-shaped groove (116) together, the special-shaped sealing ring (3) is installed in the special-shaped groove (116), and the special-shaped sealing ring (3) consists of a square column type sealing ring section (31), an S-shaped sealing ring section (32) and an arc type sealing ring section (33);

the valve housing cover (4) is a drum-shaped flat plate provided with a plurality of fifth bolt holes (41), and the fifth bolt holes (41) are in one-to-one correspondence and coaxial fit with the fourth bolt holes (117).

2. The blending needle valve according to claim 1, wherein an opening curvature of the circular arc groove (25) is the same as a curvature of the semi-cylindrical baffle (19).

3. The blending needle valve of claim 1, wherein the first needle tube segment (21) of the needle body (2) is co-diametric with the needle bore (12).

4. A blending needle valve according to claim 1, characterized in that the relative position of the inlet duct (15) is lower than the outlet duct (113).

5. The blending needle valve as claimed in claim 1, wherein the frustum-shaped through hole (110) is provided with a first annular groove (18), the frustum-shaped through hole (23) is provided with a second annular groove (24), and the first annular groove (18) and the second annular groove (24) are sleeved with coaxial O-shaped sealing rings.

6. The blending needle valve of claim 1, wherein the first valve needle section (21) of the valve needle body (2) is provided with a plurality of circles of third circular grooves (26), and the third circular grooves (26) are sleeved with coaxial O-shaped sealing rings.

7. The blending needle valve as defined in claim 6, wherein the third annular groove (26) is a deep groove, and more than half of a coaxial O-ring is nested in the third annular groove (26).

Technical Field

The invention belongs to the technical field of fluid blending valves, and particularly relates to a blending needle valve.

Background

The needle valve moves along the water flow direction to change the flow cross-sectional area so as to cut off or adjust the flow. With the rapid development of science and technology, needle valves are developed into a main valve class for gas throttling. The blending of fluids is widely used in the fields of industry, medicine, aerospace and the like, and a blending valve is arranged in a fluid blending pipe section to adjust and control fluid blending parameters such as the proportion, the speed and the like of fluid blending.

Currently, a needle valve only controls one fluid flow, has no mixing capability, limits the application field of the needle valve, and lacks a mixing needle valve which can adjust two fluids and control outlets of different mixing fluids.

Disclosure of Invention

The present invention is directed to a blending needle valve that solves the problems set forth above in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a blending needle valve comprises a valve casing main body, a valve needle main body, a special-shaped sealing ring and a valve casing cover, wherein the valve casing main body comprises a valve casing, a partition plate, an inlet pipeline, an outlet pipeline and a fourth flange surface, the top end of the valve casing is provided with a first flange surface, the center of the first flange surface is provided with a vertical valve needle hole communicated with an inner cavity of the valve casing, the first flange surface is provided with a plurality of first bolt holes, the inner cavity of the valve casing is obliquely arranged, the partition plate is divided into two cavities, the partition plate is provided with a cone-shaped through hole and a semi-cylindrical baffle plate, the cone-shaped through hole is positioned under the valve needle hole, the semi-cylindrical baffle plate is vertically arranged, the inner edge of the bottom end of the semi-cylindrical baffle plate is coincided with the top edge of the cone-shaped through hole, the inlet pipeline communicated with the right lower cavity of the valve casing is arranged on the valve casing, the inlet pipeline is provided with a second flange surface, the second flange surface is provided with a plurality of second bolt holes, the valve shell is provided with an outlet pipeline communicated with a cavity at the upper left part of the valve shell, the outlet pipeline is provided with a third flange surface, the third flange surface is provided with a plurality of third bolt holes, the front end edge of the valve shell extends outwards to form a fourth flange surface, and the fourth flange surface is provided with a plurality of fourth bolt holes;

the valve needle main body is installed in the valve casing main body and consists of a valve needle pipe section I, a valve needle pipe section II and a cone frustum, the valve needle pipe section is sleeved in the valve needle hole, the outer wall of the valve needle pipe section II is tightly attached to the inner wall of the semi-cylindrical baffle, the valve needle pipe section II is provided with an arc groove, and the cone frustum can be tightly attached to the cone frustum through hole;

the inner edge of the fourth flange face and the front end of the partition plate are jointly provided with a special-shaped groove, the special-shaped groove is internally provided with the special-shaped sealing ring, and the special-shaped sealing ring consists of a square column type sealing ring section, an S-shaped sealing ring section and an arc-shaped sealing ring section;

the valve housing cover is a drum-shaped flat plate provided with a plurality of fifth bolt holes, and the fifth bolt holes are in one-to-one correspondence and coaxial fit with the fourth bolt holes.

Preferably, the opening radian of the arc groove is the same as the radian of the semi-cylindrical baffle.

Preferably, the first valve needle pipe section of the valve needle main body is matched with the valve needle hole in the same diameter.

Preferably, the inlet duct is relatively lower than the outlet duct.

Preferably, a first annular groove is formed in the circular truncated cone-shaped through hole, a second annular groove is formed in the circular truncated cone, and coaxial O-shaped sealing rings are sleeved in the first annular groove and the second annular groove.

Preferably, a plurality of rings of third circular grooves are formed in one valve needle pipe section of the valve needle main body, and coaxial O-shaped sealing rings are sleeved in the third circular grooves.

Preferably, the third circular groove is a deep groove, and more than half of the coaxial O-ring is sleeved in the third circular groove.

Compared with the prior art, the invention has the beneficial effects that:

1. the blending needle valve can control two fluids, can realize three fluid type outlets, including two single fluids and one mixed fluid, and has superior control performance;

2. the turbulent flow enhances the fluid blending capability by forcing the main flow to change direction twice due to the obstruction of the baffle and the drop in height of the inlet and outlet ducts, which results in turbulence in the fluid in the blending region across the baffle.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the present invention in partial cross-section;

FIG. 3 is a schematic view, partially in section, of the valve housing body of the present invention;

FIG. 4 is a schematic half-section cross-sectional structural view of the valve needle body of the present invention;

fig. 5 is a schematic structural view of the profiled sealing ring of the present invention.

In the figure: 1. a valve housing body; 11. a first flange face; 12. a valve pin hole; 13. a first bolt hole; 14. a partition plate; 15. an inlet duct; 16. a second flange face; 17. a second bolt hole; 18. a first circular ring-shaped groove; 19. a semi-cylindrical baffle; 110. a truncated cone shaped through hole; 111. a third bolt hole; 112. a third flange surface; 113. an outlet conduit; 114. a valve housing; 115. a fourth flange face; 116. a special-shaped groove; 117. a fourth bolt hole; 2. a valve needle main body; 21. a valve needle pipe section I; 22. a valve needle pipe section II; 23. a truncated cone; 24. a second circular ring-shaped groove; 25. an arc groove; 26. a third circular groove; 3. a special-shaped sealing ring; 31. a square column type seal ring section; 32. an S-shaped seal ring section; 33. an arcuate seal ring segment; 4. a valve housing cover; 41. and a fifth bolt hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: as shown in fig. 1 to 5, the present invention provides a technical solution: a blending needle valve comprises a valve casing main body 1, a valve needle main body 2, a special-shaped sealing ring 3 and a valve casing cover 4, wherein the valve casing main body 1 consists of a valve casing 114, a partition plate 14, an inlet pipeline 15, an outlet pipeline 113 and a fourth flange surface 115, the top end of the valve casing 114 is provided with a first flange surface 11, the center of the first flange surface 11 is provided with a communicating valve needle hole 12 in the vertical inner cavity of the valve casing 114, the first flange surface 11 is provided with a plurality of first bolt holes 13, the inner cavity of the valve casing 114 is obliquely and diagonally arranged, the partition plate 14 is divided into two cavities, the partition plate 14 is provided with a cone frustum-shaped through hole 110 and a semi-cylindrical baffle plate 19, the cone frustum-shaped through hole 110 is positioned under the valve needle hole 12, the semi-cylindrical baffle plate 19 is vertically arranged and the bottom end inner edge of the cone frustum-shaped through hole 110 coincides with the top edge, the valve casing 114 is provided with the inlet pipeline 15 communicating the right lower cavity of the valve casing 114, a second flange surface 16 is arranged on the inlet pipeline 15, a plurality of second bolt holes 17 are formed in the second flange surface 16, an outlet pipeline 113 communicated with a cavity at the upper left part of the valve casing 114 is arranged on the valve casing 114, a third flange surface 112 is arranged on the outlet pipeline 113, a plurality of third bolt holes 111 are formed in the third flange surface 112, a fourth flange surface 115 is formed in the front end edge of the valve casing 114 in an outward extending mode, and a plurality of fourth bolt holes 117 are formed in the fourth flange surface 115;

the valve needle main body 2 is installed in the valve casing main body 1, the valve needle main body 2 is composed of a valve needle pipe section I21, a valve needle pipe section II 22 and a cone frustum 23, the valve needle pipe section I21 is sleeved in the valve needle hole 12, the outer wall of the valve needle pipe section II 22 is tightly attached to the inner wall of the semi-cylindrical baffle plate 19, an arc groove 25 is formed in the valve needle pipe section II 22, and the cone frustum 23 can be tightly attached to the cone frustum type through hole 110;

the inner edge of the fourth flange surface 115 and the front end of the partition plate 14 are provided with a special-shaped groove 116 together, the special-shaped groove 116 is internally provided with the special-shaped sealing ring 3, and the special-shaped sealing ring 3 consists of a square column type sealing ring section 31, an S-shaped sealing ring section 32 and an arc type sealing ring section 33;

the valve housing cover 4 is a drum-shaped flat plate provided with a plurality of fifth bolt holes 41, and the fifth bolt holes 41 are in one-to-one correspondence and coaxial fit with the fourth bolt holes 117.

In this embodiment, the gap between the truncated cone-shaped through hole 110 and the truncated cone 23 can be changed by moving the valve needle main body 2 up and down, when the gap between the two is zero, the fluid in the needle inlet pipe 15 cannot reach the outlet pipe 113 through the truncated cone-shaped through hole 110, when the upper and lower positions of the valve needle main body 2 are kept unchanged, the intersection of the arc groove 25 and the semi-cylindrical baffle plate 19 can be adjusted by rotating the valve needle main body 2, when the intersection of the two is zero, the fluid in the valve needle main body 2 can flow to the outlet pipe 113 through the opening of the arc groove 25, and the outlet pipe 113 is a single branch fluid; if the upper and lower positions of the valve needle main body 2 are kept unchanged, the valve needle main body 2 is continuously rotated, and when the intersection of the arc-shaped groove 25 and the semi-cylindrical baffle plate 19 is the largest, the fluid in the valve needle main body 2 cannot flow out through the opening of the arc-shaped groove 25 at the moment, and no fluid flows out from the outlet pipeline 113; if the intersection of the arc groove 25 and the semi-cylindrical baffle 19 is kept to be zero, the valve needle main body 2 is moved upwards, so that the gap between the cone frustum-shaped through hole 110 and the cone frustum 23 can be increased, and at the moment, mixed fluid reaches the outlet pipeline 113; when the intersection of the arc groove 25 and the semi-cylindrical baffle 19 is the largest and the gap between the truncated cone-shaped through hole 110 and the truncated cone 23 is not zero, the fluid in the inlet pipeline 15 can flow to the outlet pipeline 113 through the truncated cone-shaped through hole 110, and the outlet pipeline 113 is a single main flow fluid.

As shown in fig. 2 to 4, the opening curvature of the arc groove 25 is the same as the curvature of the semi-cylindrical baffle 19.

In this embodiment, it is ensured that the opening of the arc groove 25 can be completely closed by the semi-cylindrical shutter 19 on the partition plate 14 when the needle main body 2 rotates.

As shown in fig. 2 to 4, the needle tube section one 21 of the needle main body 2 is matched with the needle hole 12 in the same diameter.

In this embodiment, the valve needle hole 12 restricts the degree of freedom of the first valve needle pipe section 21, so that the first valve needle pipe section 21 can only rotate.

As shown in fig. 3, the inlet duct 15 is relatively positioned lower than the outlet duct 113.

In this embodiment, the inlet duct 15 is not at the same height as the outlet duct 113, so as to force the main flow to change direction twice, which results in turbulence of the fluid in the blending region across the partition 14, which enhances the fluid blending capability.

As shown in fig. 3 and 4, a first annular groove 18 is formed in the truncated cone-shaped through hole 110, a second annular groove 24 is formed in the truncated cone 23, and coaxial O-shaped sealing rings are sleeved in the first annular groove 18 and the second annular groove 24.

In this embodiment, the close fit between the truncated cone-shaped through hole 110 and the truncated cone 23 is ensured, and the sealing property after the two are attached is enhanced, so that the main flow can be completely cut off.

As shown in fig. 2 and 4, a plurality of circles of third circular grooves 26 are formed on the first valve needle pipe section 21 of the valve needle main body 2, and coaxial O-ring seals are sleeved in the third circular grooves 26.

In the embodiment, the sealing performance of the contact part of the valve needle pipe section I21 and the valve needle hole 12 is enhanced.

As shown in fig. 2 and 4, the third circular groove 26 is a deep groove, and more than half of the coaxial O-ring is sleeved in the third circular groove 26.

In this embodiment, in the process of the vertical movement of the valve needle main body 2, the sealing performance of the O-shaped sealing ring is ensured and the O-shaped sealing ring is prevented from falling off.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

The working principle is as follows: the gap between the cone frustum type through hole 110 and the cone frustum 23 can be changed by moving the valve needle main body 2 up and down, when the gap between the two is zero, the fluid in the needle valve inlet pipeline 15 can not reach the outlet pipeline 113 through the cone frustum type through hole 110, when the upper and lower positions of the valve needle main body 2 are kept unchanged, the intersection of the arc groove 25 and the semi-cylindrical baffle plate 19 can be adjusted by rotating the valve needle main body 2, when the intersection of the two is zero, the fluid in the valve needle main body 2 can flow to the outlet pipeline 113 through the opening of the arc groove 25, and the outlet pipeline 113 is a single branch fluid; if the upper and lower positions of the valve needle main body 2 are kept unchanged, the valve needle main body 2 is continuously rotated, and when the intersection of the arc-shaped groove 25 and the semi-cylindrical baffle plate 19 is the largest, the fluid in the valve needle main body 2 cannot flow out through the opening of the arc-shaped groove 25 at the moment, and no fluid flows out from the outlet pipeline 113; if the intersection of the arc groove 25 and the semi-cylindrical baffle 19 is kept to be zero, the valve needle main body 2 is moved upwards, so that the gap between the cone frustum-shaped through hole 110 and the cone frustum 23 can be increased, and at the moment, mixed fluid reaches the outlet pipeline 113; when the intersection of the arc groove 25 and the semi-cylindrical baffle 19 is the largest and the gap between the truncated cone-shaped through hole 110 and the truncated cone 23 is not zero, the fluid in the inlet pipeline 15 can flow to the outlet pipeline 113 through the truncated cone-shaped through hole 110, and the outlet pipeline 113 is a single main flow fluid.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.