CA2041879A1 - Sampling device - Google Patents
Sampling deviceInfo
- Publication number
- CA2041879A1 CA2041879A1 CA 2041879 CA2041879A CA2041879A1 CA 2041879 A1 CA2041879 A1 CA 2041879A1 CA 2041879 CA2041879 CA 2041879 CA 2041879 A CA2041879 A CA 2041879A CA 2041879 A1 CA2041879 A1 CA 2041879A1
- Authority
- CA
- Canada
- Prior art keywords
- chute
- sampling device
- sampling
- set forth
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 41
- 230000008569 process Effects 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 6
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 8
- 229920000136 polysorbate Polymers 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 description 18
- 239000002245 particle Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 241000694515 Calidris tenuirostris Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
- G01N2001/205—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping using a valve
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
(57) Abstract The invention relates to a sampling device for taking a sample particularly from a fluid substance, such as paper pulp. The sampling device comprises a body (1) to be fixed at a process interface and an element (2) mounted in connection with the body for effecting a sampling procedure. For a sampling procedure, said sampler element (2) is adapted to be shifted to an operative position into communication with a fluid substance through an opening (7) or a like made in body (1). In its inoperative position, said sampler element (2) cuts off communication between said opening (7) of body (1) and a process (P). The sampler element (2) includes a chute-like member (3) which, in the in-operative position of sampler element (2), said chute-like member (3) being in a posi-tion partially extending from the body into process (P), defines by its inner surface (32) together with a portion of the rim of said opening (7) in body (1) a fluid substance inlet passage (8) into said body (1) during a sampling operation.
Fig. 1
Fig. 1
Description
, 1 ~r a 1 ,l ~"
Sampling device The present invention relates to a sampling device for taking a sample particularly from a flowing material, such as paper pulp. A sampling device of the invention comprises a body fastened at a process interface and an element mounted in connection with the body for ef-fecting a sampling procedure. For sampling, an element for effecting a sampling procedure is adapted to be dis-placed relative to the body to an operative position into communication with a flowing material through an opening or a like in the body. In an inoperative posi-tion, said element for effecting a sampling procedure cuts off communication between the body opening and the process.
In view of the available prior art, reference is made to the publications US-4,197,746, US-4,635,470 and GB-1,400,607. These publications disclose a variety of solutions for effecting a sampling procedure. In terms of functional performanee, however, the cited solutions are unsatisfactory particularly in view of the actual sampling process. The publication US-4,197,746 dis-closes a pipet-type of sampling device, which of course is not suitable for taking a sample from closed process-es. A sampling device as set forth in the publication US-4,635,470 is only capable of picking up a very small amount of sample per each sampling process. In addition, such sampling device is susceptible to malfunctions as the element for picking up a sample may be jammed during the return phase in case a fluid, from which a sample is taken, contains undesired particles. A sampler as set forth in the publication GB-1,400~607 comprises a rather long sampling tube having a high risk of getting clogged up. In association with the sampling tube said - ~ , . , , - , ~ , :
:
.
: , ~ , sampling device is provided with a relatively compli-cated flushing system. Thus, as a summary of the prior art solutions, it can be concluded tha-t the available solutions are unsatisfactory in terms of controlling a fluid during a sampling process especially when a flow-ing or fluid material, e.g. paper pulp, contains un-desired particles which during a sampling process may jam or damage an element involved in the process for effecting the actual sampling.
An object of this invention is to introduce a sampling device capable of taking samples particularly from a pressurized or flowing fluid material at certain inter-vals in a simple and reliable fashion. The aim of a sampling device of the invention is to create a fully opened assembly providing a good fluid control in sampling whereby the amount of sample passing into the interior of the sampler body has a substantially free passage from the process through an element effecting the sampling. In order to achieve the above objects, a sampling de~ice of the invention is primarily charac-terized in that said element for effecting a sampling procedure comprises a substantially chute-like member which, with said element in an operative position for effecting a sampling procedure, whereby the chute-like member is in a position extending partially from the body into the process, defines by its inner surface together with the interior components of the body a fluid material inlet passage (V) for a unit or a like intended for outlet of the sample. Thus, the chute-like member, which is preferably a cylindrical, cylindrical-ly concave shaped piece, serves as a fluid substance carrying means during a sampling procedure and the fluid substance flows into the interior of the body through an inlet passage defined by the chute-like member and 3 ~ J ~
an opening in the body together. During a sampling pro-cedure, the body opening is preferably located at the central section of the chute-like member.
The annexed non-independent claims disclose a few prefer-ed embodiments of a sampling device of the invention.
The embodiments set forth in those claims are particular-ly intended to make sure that a sample pick-up can be effected in each situation in the best possible fashion and that the displacement of the element for effecting a sampling process to an inoperative position can be completed even if the fluid substance contains undesired particles. It is preferable that a gable of said chute-like emember be adapted to serve as a shut-off means in the inoperative position of said element for effecting a sampling process.
A sampling device of the invention will now be described in more detail in the following specification with re-ference made to the accompanying drawings illustrating one embodiment of the sampling device. In the drawings ig. 1 is a cross-sectional view of an embodiment of a sampling device of the invention with said sampling device set at a process interface, ig. 2 shows a cross-section of the element of fig. 1 for effecting a sampling procedure along a line II-II in fig. 1, and ig. 3 shows the element of fig. 1 for effecting a sampling procedure along line III in fig. 2.
A sampling device shown in the drawings comprises a body 1 which is provided with an element 2 for effecting a sampling procedure, l.e. a sampler element 2. As its .: , 2 ~ f~
main components said sampler element 2 includes a chute-like member 3 and an operating rod 5 or a like, connect-ed with the chute-like member at its gable 4 located inside the body 1, said rod 5 being connected to an actuator, e.g. a pneumatic cylinder (not shown), for displacing said sampler element 2. In fig. 1, said sampler element 2 is shown in an operative position, having been shifted therein by means of an actuator through a displacement in the direction of operating rod S and at the same time the longitudinal axis of the chute-like member (to the left in fig. 1). Thus, the chute-like member 3 has proceeded partially inside a process P through an opening 7 located in a front face 6 included in a cylindrical component 25 of body 1.
Thus, the ~luid substance enters the interior of body 1 through an inlet passage 8 defined by the inner surface 32 of chute-like member 3 and the opening 7 of body 1 along a path illustrated by an arrow V and defined by the interior structures of the body. The bottom part of body 1 is fitted with a preferably downwards extend-ing unit 9, through which the amount of sample is car-ried into a sample vessel 10 referentially indicated in fig. 1 for analysing said amount of sample. As shown in fig. 1, the cross-sectional area of unit 9 is larger than that of inlet passage 8 and, hence, the flowing rate of the amount of sample decelerates considerably and the amount of sample is received in sample vessel 10 at a reasonable rate of speed even if the process pressure were high.
After picking up a sample said sampler element 2 is shifted to an inoperative position (to the right in fig. 1, not shown), whereby a gable 11 included in chute-like member 3 and directed towards process P
closes said opening 7 in body 1. In order to make sure . . . . . .
; -- ~ '' ~ ' ~ '.' ':-' .
.
~ $ ~
of the closing action, edges 12 of the chute-like mem-ber and/or the rim of opening 7 in body 1 can be pro-vided with cutting edges whereby particles, e.g. knots or sticks, deposited in passage 8 and/or chute 3 are sheared through and the shift of sampler element 2 to the inoperative position can be effected.
Fig. 1 also illustrates a flushing device 13 mounted on body 1 for flushing the interior of body 1 and the chute-like member 3. sy operating said flushing device 13, e.g. ny opening a schematically indicated valve 14, a valve means 16 included in a flushing unit 15 can be opened as a result of the action of the pressure of a flushing medium, especially water, whereby the interor of the body as well as the chute-like member 3 sub-stantially in register with an opening 17 included in the flushing unit can be flushed, especially for clean-ing purposes. The valve means 16 is designed as a spring-loaded back pressure valve. The back pressure valve includes a disc member 18 which is biased by a spring 19 and pressed against the rim of said opening 17 of unit 15 in order to prevent the penetration of a fluid substance into water-flushing unit 15 during a sampling procedure even if there were a high pressure in process P. In addition, the back-pressure valve design is preferable in the sense that the flushing operation creates a powerful spray which is directed circumferentially through an annular gap defined by opening 17 and disc 18, since the flushing medium is discharged at a pressure equal to the counterforce caused by spring 19 and at a high kinetic energy, which naturally leads to a good flushing result. Fig. 1 il-lustrates with dash-and-dot lines and arrows S the operative position of the flushing device during a flushing operation. At least in certain embodiments, : . . . .
, ,,. . . : . i , ~ , - . . . .
.
it may be advantageous to provide the flushing device downstream of unit 9 with a schematically illustrated valve means 20, whereby the flushing medium flowing out through unit 9 can be directed separately from a sampling line e.g. into a sewer 21 along a line 22.
Fig. 1 illustrates further with reference numeral 23 a process interface which is provided with an aperture 2~ for a cylindrical fixing element 25 included in body 1. The aperture 23 carries a cylindrical member 26, extending outwards from process P and positioned on top of said cylindrical element 25 of body 1. Elements 25 and 26 include flange members 27, 28 which are lock-ed together with a locking ring 29 with an annular packing 30 being fitted between flange members 27 and 28, respectively.
In terms of the operation of said chute-like member 3, it should still be noted that a chute-like member, the same way as in most applications an operating rod 5 or a like, can be adapted to be rotatable around their common longitudinal axis and to be locked e.g. at 90 angular intervals~ Such rotating actions can be effect-ed e.g. by means of an actuator (not shown~ which is external of body 1 and mounted on operating rod 5 or a like. Such actuator can be e.g. a pneumatic cylinder.
A possibility of rotating the chute-like member is ad-vantageous in a sampling operation in the sense that an opening 31 included in the chute.like member can be turned to face downstream in a situation where a sample is being taken from a flowing fluid substance with a result that particles, possibly contained in the fluid substance and capable of damaging the opening of a chute-like member, especially the cutting edges, or the in-terior of body 1, are carried past the chute-like mem-.. ~ , :: ..
. .- .: , :~
:
ber. Also,durin~ a flushing operation, the chute-like member can be set in a variety of positions e.g. during flushing in order to ascertain the cleanliness of the chute-like member for a following sampling operation.
The chute-like member 3 is circular in cross-section and, thus, its cross-sectional area is substantially equal to the size of opening 7 in body 1. As seen in cross section, the shape of the inner surface 32 of chute-like member 3 is circular as for the bottom 32 of chute-like member 3. In its cross-sectional profile, the bottom section 33 of chute-like member 3 is a tubular form of even thickness and having a circular cross-sectio~. As seen in the cross-section of a chute-like member, the edges 12 of the opening 31 of chute~
like member 3 form at a central sec-tion K an angle, which is less than 180 and whose apex is the centre of the cross-section of said chute-like member. The inner surface 32 of chute-like member 3 continues to-wards edges 12 as extensions 38 tangential to inner surface 32, said extensions setting out at an angular distance of appr. 180 as seen in the cross-section of the chute-like member. Between centre point K and gable 11, which closes said opening 7 in body 1, said chute-like member 3 is provided with an inclined connect-ing piece 34 which converges from the sides of chute-like member 3, as senn from the direction perpendicular to the direction of the longitudinal axis of the chute-like member, into a V-shaped piece. The edges o~ con-necting piece 34 are likewise fitted with a cutting edge. The V-shape includes a curve-shaped bottom 35 which is level with an external cross-sectional surface 36 of chute-like member 3. This provides for diagonal-ly cutting edges in connecting piece 34 and at opening 31 of chute-like member 3. In register with a gable 4 .
, ' `
associated with operating rod 5 or a like, between the centre point K and said gable 4 there is a connecting piece 37 which is substantially steeper than said con-necting piece 34 associated with the gable of opening 7 of body 1. The chute-like member 3 can be fitted with at least one bracing arch or a like located es-pecially at centre point K for joining the edges to each other.
For details of the construction and operation of flushing device 13, reference can be made to the Applicant's co-pending Patent application entitled "Sampling device" filed concurrently herewith.
Sampling device The present invention relates to a sampling device for taking a sample particularly from a flowing material, such as paper pulp. A sampling device of the invention comprises a body fastened at a process interface and an element mounted in connection with the body for ef-fecting a sampling procedure. For sampling, an element for effecting a sampling procedure is adapted to be dis-placed relative to the body to an operative position into communication with a flowing material through an opening or a like in the body. In an inoperative posi-tion, said element for effecting a sampling procedure cuts off communication between the body opening and the process.
In view of the available prior art, reference is made to the publications US-4,197,746, US-4,635,470 and GB-1,400,607. These publications disclose a variety of solutions for effecting a sampling procedure. In terms of functional performanee, however, the cited solutions are unsatisfactory particularly in view of the actual sampling process. The publication US-4,197,746 dis-closes a pipet-type of sampling device, which of course is not suitable for taking a sample from closed process-es. A sampling device as set forth in the publication US-4,635,470 is only capable of picking up a very small amount of sample per each sampling process. In addition, such sampling device is susceptible to malfunctions as the element for picking up a sample may be jammed during the return phase in case a fluid, from which a sample is taken, contains undesired particles. A sampler as set forth in the publication GB-1,400~607 comprises a rather long sampling tube having a high risk of getting clogged up. In association with the sampling tube said - ~ , . , , - , ~ , :
:
.
: , ~ , sampling device is provided with a relatively compli-cated flushing system. Thus, as a summary of the prior art solutions, it can be concluded tha-t the available solutions are unsatisfactory in terms of controlling a fluid during a sampling process especially when a flow-ing or fluid material, e.g. paper pulp, contains un-desired particles which during a sampling process may jam or damage an element involved in the process for effecting the actual sampling.
An object of this invention is to introduce a sampling device capable of taking samples particularly from a pressurized or flowing fluid material at certain inter-vals in a simple and reliable fashion. The aim of a sampling device of the invention is to create a fully opened assembly providing a good fluid control in sampling whereby the amount of sample passing into the interior of the sampler body has a substantially free passage from the process through an element effecting the sampling. In order to achieve the above objects, a sampling de~ice of the invention is primarily charac-terized in that said element for effecting a sampling procedure comprises a substantially chute-like member which, with said element in an operative position for effecting a sampling procedure, whereby the chute-like member is in a position extending partially from the body into the process, defines by its inner surface together with the interior components of the body a fluid material inlet passage (V) for a unit or a like intended for outlet of the sample. Thus, the chute-like member, which is preferably a cylindrical, cylindrical-ly concave shaped piece, serves as a fluid substance carrying means during a sampling procedure and the fluid substance flows into the interior of the body through an inlet passage defined by the chute-like member and 3 ~ J ~
an opening in the body together. During a sampling pro-cedure, the body opening is preferably located at the central section of the chute-like member.
The annexed non-independent claims disclose a few prefer-ed embodiments of a sampling device of the invention.
The embodiments set forth in those claims are particular-ly intended to make sure that a sample pick-up can be effected in each situation in the best possible fashion and that the displacement of the element for effecting a sampling process to an inoperative position can be completed even if the fluid substance contains undesired particles. It is preferable that a gable of said chute-like emember be adapted to serve as a shut-off means in the inoperative position of said element for effecting a sampling process.
A sampling device of the invention will now be described in more detail in the following specification with re-ference made to the accompanying drawings illustrating one embodiment of the sampling device. In the drawings ig. 1 is a cross-sectional view of an embodiment of a sampling device of the invention with said sampling device set at a process interface, ig. 2 shows a cross-section of the element of fig. 1 for effecting a sampling procedure along a line II-II in fig. 1, and ig. 3 shows the element of fig. 1 for effecting a sampling procedure along line III in fig. 2.
A sampling device shown in the drawings comprises a body 1 which is provided with an element 2 for effecting a sampling procedure, l.e. a sampler element 2. As its .: , 2 ~ f~
main components said sampler element 2 includes a chute-like member 3 and an operating rod 5 or a like, connect-ed with the chute-like member at its gable 4 located inside the body 1, said rod 5 being connected to an actuator, e.g. a pneumatic cylinder (not shown), for displacing said sampler element 2. In fig. 1, said sampler element 2 is shown in an operative position, having been shifted therein by means of an actuator through a displacement in the direction of operating rod S and at the same time the longitudinal axis of the chute-like member (to the left in fig. 1). Thus, the chute-like member 3 has proceeded partially inside a process P through an opening 7 located in a front face 6 included in a cylindrical component 25 of body 1.
Thus, the ~luid substance enters the interior of body 1 through an inlet passage 8 defined by the inner surface 32 of chute-like member 3 and the opening 7 of body 1 along a path illustrated by an arrow V and defined by the interior structures of the body. The bottom part of body 1 is fitted with a preferably downwards extend-ing unit 9, through which the amount of sample is car-ried into a sample vessel 10 referentially indicated in fig. 1 for analysing said amount of sample. As shown in fig. 1, the cross-sectional area of unit 9 is larger than that of inlet passage 8 and, hence, the flowing rate of the amount of sample decelerates considerably and the amount of sample is received in sample vessel 10 at a reasonable rate of speed even if the process pressure were high.
After picking up a sample said sampler element 2 is shifted to an inoperative position (to the right in fig. 1, not shown), whereby a gable 11 included in chute-like member 3 and directed towards process P
closes said opening 7 in body 1. In order to make sure . . . . . .
; -- ~ '' ~ ' ~ '.' ':-' .
.
~ $ ~
of the closing action, edges 12 of the chute-like mem-ber and/or the rim of opening 7 in body 1 can be pro-vided with cutting edges whereby particles, e.g. knots or sticks, deposited in passage 8 and/or chute 3 are sheared through and the shift of sampler element 2 to the inoperative position can be effected.
Fig. 1 also illustrates a flushing device 13 mounted on body 1 for flushing the interior of body 1 and the chute-like member 3. sy operating said flushing device 13, e.g. ny opening a schematically indicated valve 14, a valve means 16 included in a flushing unit 15 can be opened as a result of the action of the pressure of a flushing medium, especially water, whereby the interor of the body as well as the chute-like member 3 sub-stantially in register with an opening 17 included in the flushing unit can be flushed, especially for clean-ing purposes. The valve means 16 is designed as a spring-loaded back pressure valve. The back pressure valve includes a disc member 18 which is biased by a spring 19 and pressed against the rim of said opening 17 of unit 15 in order to prevent the penetration of a fluid substance into water-flushing unit 15 during a sampling procedure even if there were a high pressure in process P. In addition, the back-pressure valve design is preferable in the sense that the flushing operation creates a powerful spray which is directed circumferentially through an annular gap defined by opening 17 and disc 18, since the flushing medium is discharged at a pressure equal to the counterforce caused by spring 19 and at a high kinetic energy, which naturally leads to a good flushing result. Fig. 1 il-lustrates with dash-and-dot lines and arrows S the operative position of the flushing device during a flushing operation. At least in certain embodiments, : . . . .
, ,,. . . : . i , ~ , - . . . .
.
it may be advantageous to provide the flushing device downstream of unit 9 with a schematically illustrated valve means 20, whereby the flushing medium flowing out through unit 9 can be directed separately from a sampling line e.g. into a sewer 21 along a line 22.
Fig. 1 illustrates further with reference numeral 23 a process interface which is provided with an aperture 2~ for a cylindrical fixing element 25 included in body 1. The aperture 23 carries a cylindrical member 26, extending outwards from process P and positioned on top of said cylindrical element 25 of body 1. Elements 25 and 26 include flange members 27, 28 which are lock-ed together with a locking ring 29 with an annular packing 30 being fitted between flange members 27 and 28, respectively.
In terms of the operation of said chute-like member 3, it should still be noted that a chute-like member, the same way as in most applications an operating rod 5 or a like, can be adapted to be rotatable around their common longitudinal axis and to be locked e.g. at 90 angular intervals~ Such rotating actions can be effect-ed e.g. by means of an actuator (not shown~ which is external of body 1 and mounted on operating rod 5 or a like. Such actuator can be e.g. a pneumatic cylinder.
A possibility of rotating the chute-like member is ad-vantageous in a sampling operation in the sense that an opening 31 included in the chute.like member can be turned to face downstream in a situation where a sample is being taken from a flowing fluid substance with a result that particles, possibly contained in the fluid substance and capable of damaging the opening of a chute-like member, especially the cutting edges, or the in-terior of body 1, are carried past the chute-like mem-.. ~ , :: ..
. .- .: , :~
:
ber. Also,durin~ a flushing operation, the chute-like member can be set in a variety of positions e.g. during flushing in order to ascertain the cleanliness of the chute-like member for a following sampling operation.
The chute-like member 3 is circular in cross-section and, thus, its cross-sectional area is substantially equal to the size of opening 7 in body 1. As seen in cross section, the shape of the inner surface 32 of chute-like member 3 is circular as for the bottom 32 of chute-like member 3. In its cross-sectional profile, the bottom section 33 of chute-like member 3 is a tubular form of even thickness and having a circular cross-sectio~. As seen in the cross-section of a chute-like member, the edges 12 of the opening 31 of chute~
like member 3 form at a central sec-tion K an angle, which is less than 180 and whose apex is the centre of the cross-section of said chute-like member. The inner surface 32 of chute-like member 3 continues to-wards edges 12 as extensions 38 tangential to inner surface 32, said extensions setting out at an angular distance of appr. 180 as seen in the cross-section of the chute-like member. Between centre point K and gable 11, which closes said opening 7 in body 1, said chute-like member 3 is provided with an inclined connect-ing piece 34 which converges from the sides of chute-like member 3, as senn from the direction perpendicular to the direction of the longitudinal axis of the chute-like member, into a V-shaped piece. The edges o~ con-necting piece 34 are likewise fitted with a cutting edge. The V-shape includes a curve-shaped bottom 35 which is level with an external cross-sectional surface 36 of chute-like member 3. This provides for diagonal-ly cutting edges in connecting piece 34 and at opening 31 of chute-like member 3. In register with a gable 4 .
, ' `
associated with operating rod 5 or a like, between the centre point K and said gable 4 there is a connecting piece 37 which is substantially steeper than said con-necting piece 34 associated with the gable of opening 7 of body 1. The chute-like member 3 can be fitted with at least one bracing arch or a like located es-pecially at centre point K for joining the edges to each other.
For details of the construction and operation of flushing device 13, reference can be made to the Applicant's co-pending Patent application entitled "Sampling device" filed concurrently herewith.
Claims (11)
1. A sampling device for taking a sample particularly from a flowing material, such as paper pulp, said sam-pling device comprising a body (1) fastened at a pro-cess interface and an element (2) mounted in associa-tion with the body for effecting a sampling procedure, whereby for sampling, said element (2) for effecting a sampling procedure is adapted to be displaced to an operative position into communication with a flowing material through an opening (7) or a like in body (1), said element (2) for effecting a sampling procedure in an inoperative position cutting off communication be-tween said opening (7) in body (1) and a process (P), c h a r a c t e r i z e d in that said sampler element (2) includes a substantially chute-like member (3) which in the operative position of sampler element (2), said chute-like member (3) being a position partially ex-tended from the body into process (P), defines by its inner surface (32) together with the interor components of body (1) a fluid material inlet passage (V) to a unit (9) or a like intended for outlet of the sample.
2. A sampling device as set forth in claim 1, c h a r -a c t e r i z e d in that the edge (12) of chute-like member (3) is at least partially and/or the rim of said opening (7) in body (1) is at least partially provided with a cutting edge or a like.
3. A sampling device as set forth in claim 1, c h a r -a c t e r i z e d in that said chute-like member (3) includes a gable (11) which serves as a closing means in the inoperative position of sampler element (2) and that the edge (12) of chute-like member (3), at least over the section covered by a connecting piece (34) in proximity of said gable (11), wherein said edge (12) is in inclined position relative to the longitudinal axis of the chute-like member, is provided with a cutting edge.
4. A sampling device as set forth in claim 1, c h a r -a c t e r i z e d in that said sampler element (2) further includes an operating rod (5) or a like which is fixed to the gable (4) of chute-like member (3) located inside said body (1) and that the shift of chute-like member (3) to the operative position is adapted to be effected through the intermediary of said operating rod (5) or a like in the direction of the longitudinal axis of chute-like member (3) preferably by operating an actuator located outside said body (1).
5. A sampling device as set forth in claim 1, c h a r -a c t e r i z e d in that said chute-like member (3) is adapted to be rotatable around its longitudinal axis at least in the operative position thereof.
6. A sampling device as set forth in claim 1! c h a r -a c t e r i z e d in that the external surface of chute-like member (3) in its cross-sectional shape as well as said opening (7) in body (1) are circular.
7. A sampling device as set forth in any of claims 1, 4 or 6, c h a r a c t e r i z e d in that said chute-like member (3) includes a central portion (K) whose edge is substantially parallel to the longitudinal axis of chute-like member (3), whereby the edges of an open-ing (31) in said chute-like member (3) at said central portion (K), as seen in the cross-section of chute-like member (3), form an angle less than 180°, the apex of said angle being formed by the centre point of the cross-section of said chute-like member (3).
8. A sampling device as set forth in any of claims 1, 3 or 7, c h a r a c t e r i z e d in that a connecting piece (34), fitted between central portion (K) and gable (11) of said chute-like member (3), said gable closing the opening (7) of body (1), is designed as a substantially V-shaped piece as viewed from the side of chute-like member (3) in the direction perpendicular to that of its longitudinal axis.
9. A sampling device as set forth in claim 7, c h a r -a c t e r i z e d in that, as viewed in a section per-pendicular to the longitudinal axis of chute-like mem-ber (3), the edges of said central portion (K) of chute-like member (3) as for the inner portions thereof are formed by the tangential extensions of an inner surface (32) included in chute-like member (3), said extensions setting off at an angular interval of appr. 180° as seen in the cross-section of said chute-like member (3).
10. A sampling device as set forth in claim 1, c h a r -a c t e r i z e d in that the cross-sectional area of inlet passage (8) is smaller than that of a unit (9) mounted in connection with body (1) and intended for the outlet of an amount of sample.
11. A sampling device as set forth in claim 1, c h a r -a c t e r i z e d in that, in the operative position of chute-like member (3), said fluid substance inlet passage (8) is formed by a combination defined by the inner surface (32) of chute-like member (3) and the opening (7) of body (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI902,287 | 1990-05-07 | ||
| FI902287A FI84665C (en) | 1990-05-07 | 1990-05-07 | Sampling Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2041879A1 true CA2041879A1 (en) | 1991-11-08 |
Family
ID=8530400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2041879 Abandoned CA2041879A1 (en) | 1990-05-07 | 1991-05-06 | Sampling device |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA2041879A1 (en) |
| DE (1) | DE4114748A1 (en) |
| FI (1) | FI84665C (en) |
| SE (1) | SE502411C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20065443L (en) * | 2006-06-27 | 2008-02-14 | Metso Paper Inc | Method and device for taking a sample from pulp suspension |
-
1990
- 1990-05-07 FI FI902287A patent/FI84665C/en not_active IP Right Cessation
-
1991
- 1991-04-29 SE SE9101287A patent/SE502411C2/en not_active IP Right Cessation
- 1991-05-06 CA CA 2041879 patent/CA2041879A1/en not_active Abandoned
- 1991-05-06 DE DE19914114748 patent/DE4114748A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FI902287A0 (en) | 1990-05-07 |
| DE4114748A1 (en) | 1991-11-14 |
| FI84665B (en) | 1991-09-13 |
| FI902287A (en) | 1991-11-08 |
| FI84665C (en) | 1991-12-27 |
| SE9101287D0 (en) | 1991-04-29 |
| SE9101287L (en) | 1991-11-08 |
| SE502411C2 (en) | 1995-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |