Jacket type high-viscosity sampling valve
阅读说明：本技术 一种夹套式高粘度取样阀 (Jacket type high-viscosity sampling valve ) 是由 倪少龙 叶兴业 于 2020-07-24 设计创作，主要内容包括：本发明提供一种夹套式高粘度取样阀,包括阀门结构、阀杆、阀座,所述阀杆置于所述阀座内并与所述阀门结构相连,所述阀杆由阀门结构带动进而在所述阀座内进行往复运动,所述阀座外侧套设有夹套,夹套和所述阀座之间有暂存腔,暂存腔用于储存保温介质,夹套侧壁还设有入口和出口,通过入口和出口对暂存腔内的保温介质进行添加和更换；阀杆上套设有垫片和中间套,用于密封并且支撑内部结构；所述中间套设为框篮式结构,便于满足压紧填料的强度要求下保证取样介质可以向取样通道流出。本发明针对粘度较大的介质在工业生产的工艺过程中的问题,起到防止取样介质冷凝、固化、其结构紧凑,并且保证高粘度介质合成过程中可以做不停机生产取样的效果。(The invention provides a jacket type high-viscosity sampling valve which comprises a valve structure, a valve rod and a valve seat, wherein the valve rod is arranged in the valve seat and connected with the valve structure, the valve rod is driven by the valve structure to reciprocate in the valve seat, a jacket is sleeved on the outer side of the valve seat, a temporary storage cavity is arranged between the jacket and the valve seat and used for storing a heat preservation medium, an inlet and an outlet are further formed in the side wall of the jacket, and the heat preservation medium in the temporary storage cavity is added and replaced through the inlet and the outlet; the valve rod is sleeved with a gasket and an intermediate sleeve for sealing and supporting the internal structure; the middle sleeve is of a basket type structure, so that the requirement for strength of the compression packing is met, and the sampling medium can flow out of the sampling channel. The invention aims at the problem of medium with larger viscosity in the process of industrial production, prevents the condensation and solidification of the sampling medium, has compact structure and ensures that the high-viscosity medium can be produced and sampled without stopping in the synthesis process.)
1. The utility model provides a jacket formula high viscosity sample valve which characterized in that: the valve rod is arranged in the valve seat and connected with the valve structure, the valve rod is driven by the valve structure to reciprocate in the valve seat, a jacket is sleeved outside the valve seat, a temporary storage cavity is arranged between the jacket and the valve seat and used for storing a heat preservation medium, an inlet and an outlet are further formed in the side wall of the jacket and communicated with the temporary storage cavity, and a high-temperature medium is injected into the temporary storage cavity through the inlet and the outlet to keep the temperature of the temporary storage cavity;
a plurality of gaskets and intermediate sleeves are arranged in the valve seat, a packing layer is filled between the gaskets and the intermediate sleeves, a first gasket at one end of the valve rod is attached to the valve seat, a second gasket at the other end of the valve rod is in contact with a gland, and the gland is sleeved on the valve rod to tightly press the packing layer;
the middle sleeve is of an integral basket type structure, and the middle sleeve of the basket type structure, the valve seat and the jacket form a channel capable of discharging a sampling medium.
2. The high viscosity sampling valve of claim 1, wherein: the two ends of the integral basket type middle sleeve are cylinders with equal diameters, a plurality of oval through holes are processed in the middle of the sleeve, supporting columns are reserved among the oval through holes to form a basket structure, and any oval hole and the side through hole of the valve seat form a material channel; the side wall of the valve seat is provided with a first through hole, the jacket is provided with a sampling channel, and the material channel, the first through hole and the sampling channel are corresponding in position and are communicated with each other.
3. The high viscosity sampling valve of claim 1, wherein: the valve structure comprises a screw and a screw supporting seat, the screw is arranged in the screw supporting seat, the screw supporting seat is fixed with the valve seat, the screw is connected with the valve rod, the screw is moved in the screw supporting seat by operating a handle at the end part of the valve structure, and the valve rod is driven by the screw to move in the valve seat.
4. A high viscosity sampling valve according to claim 3, wherein: the screw rod adopts the joint screw rod of insert screw head, the insert screw rod is connected with interior sphere and runs from opposite directions the nut, makes the insert of joint screw rod cooperatees with the interior sphere of running from opposite directions the nut, the valve rod tip is equipped with the mounting hole, run from opposite directions nut and screw head and arrange in the mounting hole, will run from opposite directions nut and valve rod through the pin and fix.
5. A high viscosity sampling valve according to claim 3, wherein: and a screw nut is arranged on one side of the screw, the screw nut is in threaded connection with the screw, a handle is fixed on the screw nut side, and the handle is axially fixed on the screw through a fastening nut between the screw and the handle.
6. The high viscosity sampling valve of claim 5, wherein: the screw rod and the handle are fixed through the key strips, and synchronous rotation is achieved.
7. The high viscosity sampling valve of claim 5, wherein: the screw nut is arranged in the screw supporting seat, a second through hole is formed in the screw nut, a third through hole is formed in the screw supporting seat, and the screw nut and the screw supporting seat are fixed through connecting pieces in the second through hole and the third through hole.
8. The high viscosity sampling valve of claim 1, wherein: one end of the valve rod is a plunger probe which is in a streamline design.
9. The high viscosity sampling valve of claim 1, wherein: the heat preservation medium is thermal medium oil, the packing layer adopts the universal CF4 packing of spherical outside surface, and the spherical outside surface of packing layer and valve seat laminating.
Technical Field
The invention belongs to a valve device, and particularly relates to a jacket type high-viscosity sampling valve.
Background
Sampling valves are valves used for obtaining media samples in pipelines or equipment, and special sampling valves are often used in many occasions where chemical analysis is frequently required on the media samples. The sampling valve can be of different types according to different working principles or performances during sampling. Considering that many sampling media have particularity and limit the environment (some sampling media have temperature requirement limit, and the phenomena of medium crystallization, solidification and the like can be generated when the temperature requirement is not met).
In some polymer polymerization and plastic modification industries, a high-viscosity medium needs to be sampled in most cases, and non-stop sampling in the production process is needed during synthesis of an intermediate product, so that the problem that the high-viscosity medium is easy to condense and solidify needs to be considered, and the sampling cannot be stopped in most cases, so that the overall efficiency of a production line is affected.
Because the high-viscosity medium (such as resin) has the characteristic of low-temperature solidification, the high-viscosity medium is easy to stick and block, so that the valve rod is blocked and the discharge hole is blocked; the prior art sampling valve scheme aiming at high viscosity is mainly divided into two schemes; firstly, sampling is directly carried out by adopting a plunger valve rod, an electric heating jacket sheet is arranged at the same time, and the electric heating jacket sheet is used for heating the sampling valve, so that a sampling medium is prevented from being condensed and solidified in the sampling process; but the potential safety hazards such as ignition and the like are easily caused when the electric heating sheet is used for heating; secondly, sampling is carried out by adopting a plunger valve rod, a detachable wafer type heating medium oil jacket is arranged on a valve seat, the connection of the heating medium oil pipe structure of the wafer type jacket is complex, and certain valve seats with large valve body structures cannot fully wrap and heat the valve rod, so that the effect is poor; therefore, how to sample the medium which is high in viscosity, easy to condense and solidify without stopping the production process needs to be improved.
Disclosure of Invention
Aiming at the problems, the invention provides the jacketed high-viscosity sampling valve which can prevent the condensation and solidification of the sampling medium, has a compact structure and can ensure that the high-viscosity medium can be produced and sampled without stopping in the synthesis process.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the clamping sleeve type high-viscosity sampling valve comprises a valve structure, a valve rod and a valve seat, wherein the valve rod is arranged in the valve seat and connected with the valve structure, the valve rod can reciprocate in the valve seat, one end of the valve rod is a plunger probe, a clamping sleeve is sleeved on the outer side of the valve seat, the clamping sleeve is completely wrapped outside the valve seat, a temporary storage cavity is reserved between the clamping sleeve and the valve seat and used for temporarily storing a heat preservation medium, an inlet and an outlet are further arranged on the side wall of the clamping sleeve and communicated with the temporary storage cavity, and the heat preservation medium in the temporary storage cavity is circulated and replaced through the inlet and the outlet; a gasket and an intermediate sleeve are arranged between the valve rod and the valve seat, gaskets are arranged at two ends of the valve rod, a packing layer is filled between the gaskets and the intermediate sleeve, the packing layer is tightly attached to the gaskets and the intermediate sleeve, the gasket at one end of the valve rod is attached to the valve seat, the other end of the valve rod is connected with a gland, and the gland is sleeved on the valve rod to fix the intermediate sleeve; two ends of the integral basket type middle sleeve are cylinders with equal diameters, a plurality of oval through holes are processed in the middle of the sleeve, supporting columns are reserved among the oval through holes to form a basket structure, and any oval hole and the side through hole of the valve seat form a material channel; the side wall of the valve seat is provided with a first through hole, the clamping sleeve is further provided with a sampling channel, and the material channel, the first through hole and the sampling channel are corresponding in position and are communicated with each other.
The invention aims at sampling without stopping the machine in the technical process of industrial production of a medium with higher viscosity, and provides the sampling valve, wherein the outer side of the valve seat is provided with the fully-wrapped jacket, and a heat preservation medium (such as hot medium oil) is stored in the temporary storage cavity between the jacket and the valve seat, so that the sampling medium driven by the valve rod in the valve seat can be heated by the heat preservation medium, the problems of easy condensation and solidification of the sampling medium in the sampling process are effectively prevented, and the internal hot medium oil pipe is simply connected; and through set in the middle of increasing between disk seat and valve rod, compress tightly through gasket, packing layer and gland, guarantee its inside leakproofness for the disk seat structure is compacter, guarantees the stability of structure, and set up the middle cover into basket frame can make and guarantee that the sample medium can all flow to the sampling passage in any direction under the intensity requirement that satisfies the pressure condiment.
Further, the valve structure comprises a screw and a screw supporting seat, the screw is arranged in the screw supporting seat, the screw supporting seat is fixed with the valve seat, the screw is fixed with the valve rod, the screw moves in the screw supporting seat through an operating handle, and the valve rod is driven to move along with the screw. The valve seat and the screw rod supporting seat are fixed, and the valve rod is driven by the screw rod to keep coaxial line displacement in the valve seat.
Further, the screw rod adopts the joint screw rod of insert screw head, the insert screw rod is connected with interior sphere split nut, makes the insert of joint screw rod cooperatees with the interior sphere of split nut, the inside mounting hole that is equipped with of one end that the valve rod links to each other with the screw rod, split nut will the screw rod with the mounting hole is fixed in the mounting hole to will split nut and valve rod are fixed with the pin. The screw rod adopts the insert nut of sphere surface to match simultaneously outside the sphere surface screw head, guarantees that the pulling force of screw rod can strengthen the valve rod and the joint effect between the split nut through the pin on the valve rod central line to adopt the split nut to make things convenient for fixed mounting between nut and valve rod, the screw rod.
Preferably, a screw nut is arranged on one side of the screw, the screw nut is in threaded connection with the screw, a handle is fixed outside the screw nut, and the handle is axially fixed on the screw through a fastening nut between the screw and the handle; the screw rod and the handle are fixed by the aid of the key strips, and the handle and the screw rod rotate synchronously. One side of the screw rod is fixed with the screw rod fixing seat through the screw rod nut, the handle is fixed on the outer side of the screw rod nut, the handle is fastened through the fastening nut through the key strip, the handle is made to form a complete valve structure, and all the structures are guaranteed to be on the same axial center line.
Preferably, the screw nut is arranged in the screw support seat, a second through hole is formed in the screw nut, a third through hole is formed in the screw support seat, the screw nut and the screw support seat are fixed through connecting pieces in the second through hole and the third through hole, and the connecting pieces are grease nipples. The screw nut is connected with the screw supporting seat through the connecting piece, and the connection stability of the screw nut and the screw supporting seat is guaranteed.
Preferably, the plunger probe adopts a streamline design, so that the sampling depth is increased, the contact area is ensured, and the extraction effect on high-viscosity media during sampling is improved.
Preferably, the heat preservation medium is thermal medium oil, and the filler layer is spherical-outside universal CF4 filler. The heat preservation time and effect can be enhanced through the heat preservation performance of the heat medium oil, the abrasion performance of the CF4 filler can be enhanced, the sealing performance is ensured, the abrasion is reduced, and the service life of the heat medium oil is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the sampling valve of the present invention;
FIG. 2 is a schematic view of a jacket structure according to the present invention;
FIG. 3 is a view showing the effect of the connection between the valve stem and the screw according to the present invention;
FIG. 4 is a graph of the effect of filling within the valve seat of the present invention;
FIG. 5 is a schematic structural view of a basket-type intermediate sleeve of the present invention;
FIG. 6 is a schematic diagram of a valve sampling process according to the present invention.
Detailed Description
The invention discloses a jacketed high-viscosity sampling valve, which is described in the attached drawings.
Referring to fig. 1 and 2, the sampling valve includes a valve structure 1, a
The valve structure 1 comprises a screw 11 and a screw supporting seat 12, the screw 11 is arranged in the screw supporting seat 12, the screw supporting seat 12 and the
Referring to fig. 3, the screw 11 is a joint screw with an outer spherical surface screw head, the outer spherical surface screw 11 is connected with an inner spherical surface split nut 14, so that the outer spherical surface of the joint screw is matched with the inner spherical surface of the split nut 14, the end part of the
Referring to fig. 4, the filler layer 23 adopts a spherical-outside universal CF4 filler. The heat preservation time and effect can be enhanced through the heat preservation performance of the heat medium oil, the abrasion performance of the CF4 filler can be enhanced, the sealing performance is ensured, the abrasion is reduced, and the service life of the heat medium oil is prolonged.
Referring to fig. 5, the middle sleeve 22 is a basket-type structure, two ends of the integral basket-type middle sleeve are equal-diameter cylinders 221, a plurality of oval through holes are formed in the middle of the sleeve, support columns 222 are reserved among the oval through holes to form a basket structure, any oval hole and a through hole on the side face of the valve seat form a material channel, the side wall of the
The basic working principle of the sampling valve of the present invention is as follows, as shown in the attached figure 6: when the valve structure is closed, the handle is attached to the screw rod supporting seat, the valve rod compresses the middle sleeve and the gasket by compressing the packing in the valve seat, and the interior of the valve rod is sealed; during sampling, the probe is extended into the material, so that the probe is directly contacted with a high-viscosity medium (such as high-viscosity resin), and the high-viscosity resin is conveniently extracted through the design of a streamline plunger probe; the handle is rotated, the handle drives the screw rod to move in the screw rod supporting seat, the screw rod is connected with the valve rod, the screw rod drives the valve rod to be drawn out of the valve seat, the plunger probe at the front end of the valve rod and one end of the valve rod move towards the interior of the valve seat, the streamline plunger probe is contacted with the high-viscosity resin, so that the high-viscosity sampling material and the probe enter the valve seat together, when the plunger probe moves to the basket type middle sleeve, the gasket and the filler inside the valve rod and the valve seat are continuously sealed, high-viscosity sampling resin is prevented from entering the screw rod supporting seat, the sealing effect is guaranteed, the working effect of the valve structure is prevented from being influenced, a complete sampling and collecting channel is formed by the movement of the probe, the middle position of the basket type middle sleeve, the first through hole and the sampling channel, and sampling materials enter the sampling channel through the basket type middle sleeve and the first through hole of the valve seat and then flow into the collecting device; after sampling is finished, the handle is controlled to restore the positions of the screw rod, the valve rod and the probe; whole working process all keeps sealed, does not influence holistic leakproofness, through the clamp cover that sets up a full parcel in the disk seat outside, and the heat preservation medium (like hot medium oil) is deposited to the intracavity of keeping in the middle of pressing from both sides the cover and the disk seat, can heat the sample medium that is driven by the valve rod in the disk seat through the heat preservation medium, effectually prevents that the sample medium from condensing, the problem of solidification easily taking place at the in-process of sample, and the structure of disk seat inside is more reasonable, has guaranteed to accomplish in the production process and has carried out the sample that does not shut down to the material that part just need the sample in the process.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
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