An anti-sputter anti-drip flow adjustable batching valve

Abstract

The invention discloses a sputter-proof and anti-drip flow adjustable batching valve, which comprises a valve body assembly, a power assembly and a valve core assembly; the valve body assembly includes an upper valve body (26) and an upper valve body (26) connected The lower valve body (30); the power assembly includes a cylinder (9) located at the top of the upper valve body (26) and an electric cylinder (23) located at the top of the cylinder (9); the spool assembly includes a valve A core module and a positioning and sealing module, the valve core module includes a valve core (32) and an intermediate valve core (33) arranged inside the upper valve body (26) and the lower valve body (30), the positioning and sealing module It includes a guide ring (25) arranged between the valve core (32) and the upper valve body (26), and a guide sleeve (31) arranged between the middle valve body (33) and the lower valve body (30). ). The batching valve of the present invention greatly reduces the flow and pressure at the outlet of the batching valve when the spool is switched, prevents scattering and splashing of raw materials at the outlet, and simultaneously realizes stepless adjustment of the flow.

Description

technical field [0001] The invention belongs to the field of high-precision batching valves, and more specifically relates to a sputter-proof and drip-proof flow-adjustable batching valve. Background technique [0002] In industries such as flavors and fragrances, fine chemicals (such as paints, inks), pharmaceutical preparations, daily chemicals, beverages, etc., whether in experimental research or mass production, it is often necessary to mix various liquid (or powder, granule) raw materials by The formula is proportioned and mixed, and this process is the batching process. [0003] At present, the batching valves used in the flavor and fragrance industry and cigarette factories mainly adopt the following two types: one is to adopt the integrated anti-drip type batching valve disclosed in the patent document CN102758923B, such as figure 1 As shown, it is a two-stage cylinder + two-stage conical on-off valve. The opening and closing of the two-stage cone valve is mainly co...

AI Technical Summary

Problems solved by technology

[0003] At present, the batching valves used in the flavor and fragrance industry and cigarette factories mainly adopt the following two types: one is to adopt the integrated anti-drip type batching valve disclosed in the patent document CN102758923B, such as figure 1 As shown, it is a two-stage cylinder + two-stage conical on-off valve. The opening and closing of the two-stage cone valve is mainly controlled by the three positions of the cylinder. When controlling the accuracy, the cylinder moves to the first position and lifts the first stage. Valve, when controlling a large flow, the cylinder moves to the second position and lifts the second stage. In this method, the shape of the valve mouth is conical. The divergence angles intersect and the liquid will collide, causing the liquid to splash around

[0004] The other is the anti-drip flow control valve disclosed in patent document CN203926846U, such as figure 2 As shown, it is a two-stage cylinder + two-stage straight port switch valve, the same figure 1 The scheme is similar, by controlling the three positions of the cylinder to lift the two-stage valve, so as to realize the control of small flow and large flow, this method reduces the problem of liquid splashing to a certain extent, but because the front end protrudes too long for the guide, resulting in a large number of droplets remaining

Both of the above two methods have certain problems. Using two cylinders can only control two levels of flow, which cannot be adjusted arbitrarily within a range. At the same time, it cannot solve the problems of liquid splashing and residue.

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