Pneumatic quantitative powder sampling valve

Abstract

The utility model provides a pneumatic quantitative powder sampling valve, which relates to the technical field of powder sampling, and comprises a connecting pipe, a quantitative sampling mechanism is arranged outside the connecting pipe, the quantitative sampling mechanism comprises a material taking pipe, the outer part of the material taking pipe is fixedly sleeved on the inner wall of the connecting pipe, and one end of the material taking pipe penetrates and extends into the connecting pipe. A notch is formed in the outer part of one end of the material taking pipe, the other end of the material taking pipe is fixedly communicated with a valve body through a hoop, the upper end of the outer part of the valve body is fixedly communicated with a purging pipe, and the lower end of the outer part of the valve body is fixedly communicated with a material receiving pipe. Compared with the prior art, the powder sampling device has the advantages that manual labor is reduced, sampling efficiency is improved, the valve body and the sampling bottle are convenient to disassemble and maintain through convenient disassembly of the hoop, and the sealing ring in the annular sealing groove can guarantee that powder in the connecting pipe is prevented from leaking out of the material taking pipe when sampling is not carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder sampling technical field especially relates to a kind of pneumatic quantitative powder sampling valve. BACKGROUND

[0002] In industrial production, pneumatic conveying system is widely used for powder material transmission, and its pipeline sampling analysis is extremely critical. On the one hand, it is the core of quality control, accurately grasps the material composition, can guarantee the product quality of pharmaceutical, fine chemical industry, and avoid the problem of raw materials causing product defects; according to the material form parameter, the conveying parameter can be optimized to maintain the continuity of production.

[0003] In the prior art, in order to extract the powder sample in the pipeline, a quick-opening manhole is needed to be opened on the side wall of the pipeline. During the sampling process, the worker needs to open the quick-opening manhole, and then extend the sampling spoon into the pipeline to extract the powder sample. After the sampling is completed, the quick-opening manhole is closed to prevent the powder from leaking out of the quick-opening manhole. This method is not only cumbersome to operate, but also causes the powder to overflow through the manhole, resulting in pollution and waste. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems existing in the prior art. The current powder sampling in the pipeline is more cumbersome to operate, and the powder is easy to overflow, resulting in pollution and waste.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of pneumatic quantitative powder sampling valve, including connector, the outside of the connector is provided with quantitative sampling mechanism, and quantitative sampling mechanism includes material taking pipe, the outside of the material taking pipe is fixedly sleeved with the inner wall of the connector, one end of the material taking pipe penetrates and extends to the inside of the connector, the outside of one end of the material taking pipe is provided with notch, another end of the material taking pipe is fixedly connected with valve body by clamp;

[0007] The outside upper end of the valve body is fixedly connected with purge pipe, the outside lower end of the valve body is fixedly connected with material receiving pipe, the lower end of the material receiving pipe is fixedly connected with quick-release connector by clamp, the lower end inner wall of the quick-release connector is threadedly connected with sampling bottle.

[0008] Preferably, one end of the valve body is fixedly installed with pneumatic actuator, one end of the pneumatic actuator piston rod extends to the inside of the valve body.

[0009] Preferably, one end of the pneumatic actuator piston rod is fixedly connected with sampling block, the outside of the sampling block is movably sleeved with the inner wall of the material taking pipe.

[0010] Preferably, the outer part of the sampling block is provided with an annular quantitative groove, and the outer part of the sampling block is provided with annular sealing grooves which are symmetrically distributed.

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

[0012] In the utility model, the quantitative sampling mechanism is used to realize automatic quantitative sampling of the powder in the connecting pipe, which reduces the labor intensity and improves the sampling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A schematic diagram of the main structure of the utility model is provided.

[0014] Figure 2 A schematic diagram of the main structure of the utility model is provided. Figure 1 An enlarged view of structure A is provided.

[0015] Figure 3 A schematic diagram of the main structure of the utility model is provided.

[0016] Figure 4 A schematic diagram of the main structure of the utility model is provided.

[0017] Figure 5 A schematic diagram of the main structure of the utility model is provided.

[0018] Legend: 1, connecting pipe; 2, material taking pipe; 21, notch; 22, valve body; 23, purging pipe; 24, material receiving pipe; 25, quick release interface; 26, sampling bottle; 27, pneumatic actuator; 28, sampling block; 29, annular quantitative groove; 210, annular sealing groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] For the convenience of understanding the utility model, the following will be described in relation to the utility model more fully, a number of embodiments of the utility model are given, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be intervening elements, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be intervening elements, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terminology used in the specification of the utility model herein is only for the purpose of describing specific embodiments and is not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0023] Embodiments

[0024] As Figures 1-5 shown, the utility model provides a technical scheme: a kind of pneumatic quantitative powder sampling valve, including connector 1, connector 1 is the passage of powder normal delivery, usually with entire powder delivery system is communicated, guarantee that powder can pass smoothly.

[0025] The outside of connector 1 is provided with quantitative sampling mechanism, and the quantitative sampling mechanism includes material taking pipe 2, the outside of material taking pipe 2 is fixedly sleeved on the inner wall of connector 1, one end of material taking pipe 2 penetrates and extends to the inside of connector 1, the outside of one end of material taking pipe 2 is provided with notch 21, another end of material taking pipe 2 is fixedly connected with valve body 22 by clamp, and the clamp connection mode has the characteristics of convenient installation and disassembly, so as to facilitate maintenance or replacement of valve body 22.

[0026] The outside upper end of valve body 22 is fixedly connected with purge pipe 23, and the purge pipe 23 is mainly used to blow gas into valve body 22 after sampling is completed, by connecting equipment such as air pump, a small amount of powder remaining in the related components is blown into sampling bottle 26, to ensure the accuracy of sampling.

[0027] The outer lower end of the valve body 22 is fixedly connected with a receiving pipe 24, which is a channel for powder to enter a sampling bottle 26 from the valve body 22, and the lower end of the receiving pipe 24 is fixedly connected with a quick release connector 25 through a clamp, so that the sampling bottle 26 is conveniently mounted and dismounted, and the convenience of operation is improved.

[0028] The inner wall of the lower end of the quick release connector 25 is threadedly connected with the sampling bottle 26, so that the connection between the sampling bottle 26 and the quick release connector 25 is sealed, powder leakage is prevented, and the sampling bottle 26 is conveniently connected and sealed by a cover body.

[0029] One end of the valve body 22 is fixedly provided with a pneumatic actuator 27, one end of a piston rod of the pneumatic actuator 27 extends into the valve body 22, the pneumatic actuator 27 is a driving device taking compressed air as a power source, the working principle of the pneumatic actuator 27 is to push the piston inside to move by the pressure of compressed air, so that the piston rod is extended or retracted, the pneumatic actuator 27 has the advantages of fast response speed and stable action, and is very suitable for driving the sampling valve.

[0030] One end of the piston rod of the pneumatic actuator 27 is fixedly connected with a sampling block 28, the outer portion of the sampling block 28 is movably sleeved on the inner wall of the receiving pipe 2, that is, the extension and retraction of the piston rod can accurately drive the sampling block 28 to move in the receiving pipe 2, and the outer portion of the sampling block 28 is movably sleeved on the inner wall of the receiving pipe 2, so that the sampling block 28 can smoothly slide in the receiving pipe 2 and has a certain cooperation precision with the inner wall of the receiving pipe 2, to prevent powder from leaking from the gap between the sampling block 28 and the inner wall of the receiving pipe 2.

[0031] An annular quantitative groove 29 is formed in the outer portion of the sampling block 28, the annular quantitative groove 29 is a key structure for realizing quantitative sampling, and the volume of the annular quantitative groove 29 determines the amount of powder sampled each time, in actual use, the annular quantitative groove 29 can be set to a specified depth according to different sampling requirements, so as to adjust the sampling amount.

[0032] Symmetrically distributed annular sealing grooves 210 are arranged on the outer portion of the sampling block 28, and sealing rings are usually arranged in the annular sealing grooves 210. The sealing rings can form a seal between the sampling block 28 and the inner wall of the receiving pipe 2, so that powder in the receiving pipe 1 is prevented from leaking from the receiving pipe 2 when sampling is not performed, and the accuracy of sampling and the sealing performance of the system are improved.

[0033] The working process of the utility model is as follows:

[0034] Step one, according to the use requirement, the annular quantitative groove 29 is set to a specified depth, when sampling, the pneumatic actuator 27 drives the piston rod to extend, thereby the piston rod drives the sampling block 28 to move to the gap 21 of the sampling pipe 2, at this time, the material in the connecting pipe 1 falls from top to bottom, falls through the gap 21 to the annular quantitative groove 29 in the sampling block 28, makes the annular quantitative groove 29 full of powder, then the pneumatic actuator 27 drives the piston rod to retract;

[0035] Step two, when the piston rod drives the sampling block 28 to retract to the sampling pipe 24, due to the self weight of the powder, the powder falls through the sampling pipe 24 to the sampling bottle 26, at the same time, the gas pump connected with the blowing pipe 23 is started, a small amount of powder in the annular quantitative groove 29 is blown into the sampling bottle 26 through the blowing gas flow, after waiting for the blowing to end, the sampling bottle 26 can be taken off from the quick release interface 25 by rotating the sampling bottle 26, and the bottle cap is screwed on to seal the sampling bottle 26.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pneumatically operated dosing powder sampling valve comprising a connection piece (1), characterized in that: The outer part of the connecting pipe (1) is provided with a quantitative sampling mechanism, and the quantitative sampling mechanism comprises a material taking pipe (2), the outer part of the material taking pipe (2) is fixedly sleeved on the inner wall of the connecting pipe (1), one end of the material taking pipe (2) penetrates and extends to the inside of the connecting pipe (1), the outer part of one end of the material taking pipe (2) is provided with a gap (21), and the other end of the material taking pipe (2) is fixedly connected with a valve body (22) through a clamp; The outer upper end of the valve body (22) is fixedly connected with a blowing pipe (23), the outer lower end of the valve body (22) is fixedly connected with a material receiving pipe (24), the lower end of the material receiving pipe (24) is fixedly connected with a quick release connector (25) through a clamp, and the lower end of the quick release connector (25) is threadedly connected with a sampling bottle (26) on the inner wall.

2. A pneumatically operated constant mass powder sampling valve according to claim 1 wherein: One end of the valve body (22) is fixedly installed with a pneumatic actuator (27), and one end of the piston rod of the pneumatic actuator (27) extends to the inside of the valve body (22).

3. A pneumatically operated constant mass powder sampling valve according to claim 2, wherein: One end of the piston rod of the pneumatic actuator (27) is fixedly connected with a sampling block (28), and the outer part of the sampling block (28) movably sleeves the inner wall of the material taking pipe (2).

4. A pneumatically operated constant mass powder sampling valve according to claim 3 wherein: The outer part of the sampling block (28) is provided with an annular quantitative groove (29), and the outer part of the sampling block (28) is provided with annular sealing grooves (210) which are symmetrically distributed.

Images