Sampling device

Abstract

The utility model relates to a sampling device which is used for being connected with a material production device and is obliquely arranged downwards from one end close to the material production device to one end far away from the material production device. The sampling device comprises a valve seat, the inlet end of the valve seat is used for being connected with a material production device, a through hole is formed in the valve seat in the axial direction, and a discharging opening communicated with the through hole is formed in the side wall of the valve seat; the sampling rod assembly comprises a sealing shaft sleeve and a screw rod, the sealing shaft sleeve is slidably arranged in the through hole, the screw rod is rotatably connected with the valve seat, the sealing shaft sleeve and the screw rod are sequentially arranged away from the inlet end of the valve seat, and one end of the sealing shaft sleeve is provided with an internal thread and is in threaded connection with an external thread of the screw rod, so that the sealing shaft sleeve slides along the through hole to open or close the discharge port. In the sliding process of the sealing shaft sleeve, the screw rod only needs to rotate, does not move in the axial direction of the through hole and does not extend outwards due to the fact that the discharging port is opened, and an extra space does not need to be reserved outside.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling, in particular to a sampling device. Background Art

[0002] The sampling device is a device that takes out materials online through the sampling device during the material production process of the material production device.

[0003] In the prior art, the sampling device includes an outer sleeve and a sampling rod. One end of the outer sleeve is connected to the material production device. A discharge port is provided on the side wall of the outer sleeve. The sampling rod slides along the axial direction of the outer sleeve to open and close the discharge port. When the discharge port is opened, the material in the material production device can enter the outer sleeve from one end of the outer sleeve, and the material can be taken out of the discharge port through the outer sleeve. However, when the discharge port is opened, the sampling rod needs to move outward along the axial direction of the outer sleeve and extend out of the outer sleeve, and sufficient space needs to be reserved outside. Therefore, when the external space is limited, it causes difficulty for the operator to operate, or the sampling device is no longer applicable. Utility Model Content

[0004] The utility model aims to provide a sampling device to reduce the space occupied by the sampling device and facilitate sampling operations in a limited space.

[0005] To achieve the above object, the utility model provides a sampling device, which is used to be connected to a material production device and is arranged to be inclined downward from an end close to the material production device to an end away from the material production device; the sampling device includes:

[0006] A valve seat, the inlet end of which is used to be connected to the material production device, the valve seat is provided with a through hole along the axial direction, and the side wall of the valve seat is provided with a discharge port connected to the through hole;

[0007] The sampling rod assembly includes a sealing sleeve and a screw, wherein the sealing sleeve is slidably arranged in the through hole, the screw is rotatably connected to the valve seat, the sealing sleeve and the screw are arranged away from the inlet end of the valve seat in sequence, and one end of the sealing sleeve is provided with an internal thread, which is threadedly connected to the external thread of the screw, so that the sealing sleeve slides along the through hole to open or close the discharge port.

[0008] Optionally, the through hole includes a first straight hole portion, a tapered sealing hole portion, and a second straight hole portion which are sequentially arranged, the first straight hole portion is arranged close to the inlet end of the valve seat, the large diameter end of the tapered sealing hole portion is connected to the second straight hole portion, and the small diameter end is connected to the first straight hole portion, and the discharge port is directly opposite to the tapered sealing hole portion;

[0009] The sealing sleeve includes a first portion, a tapered portion, and a second portion connected in sequence, wherein the tapered portion can be sealingly inserted in the tapered sealing hole portion, the first portion can be slidably inserted in the first straight hole portion, and at least the tapered portion and the second portion can be slidably inserted in the second straight hole portion.

[0010] Optionally, the taper of the conical sealing hole portion is 12°-18°.

[0011] Optionally, the discharge port is connected to a discharge pipe, and the discharge pipe forms an angle with the axial direction of the valve seat.

[0012] Optionally, the sampling device further comprises a support assembly, wherein the support assembly is connected to the valve seat, and the screw is rotatably connected to the support assembly.

[0013] Optionally, an observation window is provided on the valve seat, and the observation window is communicated with the through hole; a first connecting plate is connected to the outer side of the valve seat, and a flange is connected to an end of the valve seat away from the inlet end;

[0014] The support assembly comprises:

[0015] A support gland, wherein a portion of the support gland is disposed in the through hole, the sealing sleeve is slidably disposed in the support gland, and at least a portion of the screw is located in the support gland; another portion of the support gland passes through the observation window and is connected to the first connecting plate;

[0016] The rear valve seat is connected to the flange, and the screw rod is passed through the rear valve seat and is rotatably connected to the rear valve seat.

[0017] Optionally, the supporting gland includes a sleeve and a second connecting portion connected to one end of the sleeve, the sealing sleeve is slidably inserted into the sleeve, and the second connecting portion passes through the observation window and is connected to the first connecting plate.

[0018] Optionally, a nylon sleeve or a rolling bearing is provided between the rear valve seat and the screw, and / or

[0019] A sealing filler is arranged between the end surface of the sealing sleeve and the valve seat.

[0020] Optionally, a section of the screw rod extends out of the valve seat and is connected to a rocker arm.

[0021] Optionally, the end surface of the sealing sleeve can be flush with the inlet end of the valve seat, and / or

[0022] The sampling rod assembly also includes a spiral stirring cage component, which includes a mounting shaft and a spiral blade. The spiral blade is spirally connected to the mounting shaft, and the mounting shaft is connected to one end of the sealing sleeve close to the inlet end of the valve seat.

[0023] As can be seen from the above, the technical solution provided by the utility model is that when it is necessary to open the discharge port, the screw can be rotated. Since the screw is threadedly connected to the sealing sleeve, the sealing sleeve can slide along the through hole. When the screw slides to the side of the discharge port away from the inlet end, the discharge port is opened, and the inlet end of the valve seat is connected to the discharge port through the through hole, so that the material can enter the through hole from the inlet end of the valve seat and then be discharged from the discharge port. When it is necessary to close the discharge port, the screw is rotated in the opposite direction, and the sealing sleeve slides in the opposite direction along the through hole until the sealing sleeve is closed by the discharge port. During the sliding of the sealing sleeve, the screw only needs to rotate and will not move along the axial direction of the through hole. Therefore, the screw will not extend outward due to the opening of the discharge port, and no additional space needs to be reserved outside. When the external space is limited, the sampling device can also be applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the connection between the sampling device and the material production device provided by the embodiment of the utility model;

[0025] Figure 2 It is a partial cross-sectional view of the sampling device provided by the embodiment of the utility model;

[0026] Figure 3 yes Figure 2 Sectional view along AA direction;

[0027] Figure 4 yes Figure 2 Left view of

[0028] Figure 5 It is a structural schematic diagram of a valve seat, a first connecting plate and a flange provided in an embodiment of the utility model;

[0029] Figure 6 It is a structural schematic diagram of a sampling rod assembly provided by an embodiment of the utility model;

[0030] Figure 7 It is a cross-sectional view of a partial structure of another sampling device provided in an embodiment of the utility model.

[0031] In the figure:

[0032] 100. Sampling device; 200. Material production device;

[0033] 1. Valve seat; 11. Inlet end; 12. Discharge port; 13. Observation window; 14. Through hole; 141. First straight hole portion; 142. Conical sealing hole portion; 143. Second straight hole portion;

[0034] 2. First connecting plate; 3. Flange;

[0035] 4. Sampling rod assembly; 41. Sealing sleeve; 411. First part; 412. Conical part; 413. Second part; 42. Screw;

[0036] 5. Supporting gland; 51. Sleeve; 52. Second connecting portion;

[0037] 6. Rear valve seat; 7. Nylon bushing; 8. Sealing packing; 9. Screw stirring cage; 91. Mounting shaft; 92. Screw blade;

[0038] 10. Discharge pipe; 20. Rocker; 30. First bolt; 40. Second bolt; 50. Reinforcement plate; 60. Set screw. DETAILED DESCRIPTION

[0039] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all.

[0040] Some directional words are defined in the present utility model. Unless otherwise specified, the directional words used, such as "upper", "lower", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute limitations on the protection scope of the present utility model.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] This embodiment provides a sampling device 100 for online sampling. For example, the material may be liquid or solid. When the material is solid, the material may be granular or in other shapes, such as straw. The sampling device 100 provided in this embodiment can reduce the space occupied by the sampling device 100, and facilitate sampling operations in a limited space.

[0044] like Figure 1 As shown, the sampling device 100 provided in this embodiment is used to be connected to the material production device 200, and is arranged to be inclined downward from an end close to the material production device 200 to an end away from the material production device 200, so as to facilitate the automatic and convenient discharge of the material in the material production device 200 under the action of its own gravity.

[0045] like Figure 2-Figure 4 As shown, the sampling device 100 includes a valve seat 1 and a sampling rod assembly 4, wherein the inlet end 11 of the valve seat 1 is used to connect with the material production device 200, the valve seat 1 is provided with a through hole 14 along the axial direction, and the side wall of the valve seat 1 is provided with a discharge port 12 connected with the through hole 14. Preferably, the discharge port 12 is located on the downward side of the side wall of the valve seat 1, so that the material can be discharged from the discharge port 12 under the action of its own gravity.

[0046] The sampling rod assembly 4 includes a sealing sleeve 41 and a screw 42. The sealing sleeve 41 is slidably set in the through hole 14, and the screw 42 is rotatably connected to the valve seat 1. The sealing sleeve 41 and the screw 42 are sequentially arranged away from the inlet end 11 of the valve seat 1. An internal thread is provided at one end of the sealing sleeve 41, and is threadedly connected to the external thread of the screw 42, so that the sealing sleeve 41 slides along the through hole 14 to open or close the discharge port 12.

[0047] It can be understood that the end of the sealing sleeve 41 provided with the internal thread is away from the inlet end 11 of the valve seat 1 , and the length of the internal thread of the sealing sleeve 41 can be determined according to the sliding length of the sealing sleeve 41 .

[0048] When the discharge port 12 needs to be opened, the screw 42 can be rotated, and the screw 42 is threadedly connected with the sealing sleeve 41, so the sealing sleeve 41 rotates and slides relative to the screw 42, that is, the sealing sleeve 41 slides along the through hole 14. When the screw 42 slides to the side of the discharge port 12 away from the inlet end 11, the discharge port 12 is fully opened, and the inlet end 11 of the valve seat 1 is connected with the discharge port 12 through the through hole 14, so that the material can enter the through hole 14 from the inlet end 11 of the valve seat 1, and then be discharged from the discharge port 12. When the discharge port 12 needs to be closed, the screw 42 is rotated in the opposite direction, and the sealing sleeve 41 slides in the opposite direction along the through hole 14 until the sealing sleeve 41 is closed by the discharge port 12. During the sliding of the sealing sleeve 41, the screw 42 only needs to rotate and will not move axially along the through hole 14. Therefore, the screw 42 will not extend outward due to the opening of the discharge port 12, and no additional space needs to be reserved outside. When the external space is limited, the sampling device 100 can also be used.

[0049] like Figure 5 As shown, the through hole 14 includes a first straight hole portion 141, a tapered sealing hole portion 142 and a second straight hole portion 143 which are arranged in sequence. The first straight hole portion 141 is arranged close to the inlet end 11 of the valve seat 1, the large diameter end of the tapered sealing hole portion 142 is connected to the second straight hole portion 143, and the small diameter end is connected to the first straight hole portion 141, and the discharge port 12 is directly opposite to the tapered sealing hole portion 142.

[0050] like Figure 6 As shown, the sealing sleeve 41 includes a first portion 411, a tapered portion 412, and a second portion 413 connected in sequence, and the tapered portion 412 can be sealingly inserted in the tapered sealing hole portion 142 to seal the discharge port 12. The first portion 411 can be slidably inserted in the first straight hole portion 141, and at least the tapered portion 412 and the second portion 413 can be slidably inserted in the second straight hole portion 143. Specifically, when the discharge port 12 is closed, the first portion 411 is located in the first straight hole portion 141, the tapered portion 412 is located in the tapered sealing hole portion 142, and the second portion 413 is located in the second straight hole portion 143.

[0051] The setting of the conical sealing hole portion 142 and the conical portion 412, on the one hand, can reduce the accuracy of the through hole 14 and the sealing sleeve 41 when sealing the discharge port 12; on the other hand, when sealing the discharge port 12, the conical sealing hole portion 142 and the conical portion 412 have a tight fit between the conical surfaces, the sealing sleeve 41 slides into place, and the sealing sleeve 41 and the screw 42 are locked and self-locking is achieved.

[0052] Optionally, the taper of the tapered sealing hole portion 142 is 12°-18°, such as 15°.

[0053] like Figure 3As shown, the end surface of the sealing sleeve 41 can be flush with the inlet end 11 of the valve seat 1. Specifically, when the sealing sleeve 41 closes the discharge port 12, the end surface of the sealing sleeve 41 is flush with the inlet end 11 of the valve seat 1. It can be understood that flush means approximately flush. In this way, when no sampling is performed, the material will not enter the through hole 14.

[0054] In other optional embodiments, such as Figure 7 As shown, the sampling rod assembly 4 also includes a spiral stirring cage 9, which includes a mounting shaft 91 and a spiral blade 92. The spiral blade 92 is spirally connected to the mounting shaft 91, and the mounting shaft 91 is connected to one end of the sealing sleeve 41 close to the inlet end 11 of the valve seat 1. When the material is solid material, the spiral blade 92 makes it difficult to block the material.

[0055] like Figure 1 As shown, optionally, the discharge port 12 is connected to a discharge pipe 10, and the discharge pipe 10 has an angle with the axial direction of the valve seat 1, so that when the sampling device 100 is connected to the material production device 200, the discharge pipe 10 is vertically arranged, thereby facilitating the material to slide down from the discharge pipe 10 under the action of its own gravity. In a specific embodiment, the discharge pipe 10 and the axial direction of the valve seat 1 form an angle of 50°, and the axial direction of the valve seat 1 forms an angle of 40° with the horizontal direction.

[0056] like Figure 2 and Figure 3 As shown, the outer side of the inlet end 11 of the valve seat 1 is provided with an external thread, and the valve seat 1 is connected to the material production device 200 through the external thread, so as to facilitate the loading and unloading of the sampling device 100. It can be understood that the outer side of the inlet end 11 of the valve seat 1 here refers to the vicinity of the valve seat 1 close to the inlet end 11, not just the end face of the valve seat 1, but the external thread has a certain length along the axial direction of the valve seat 1 to ensure the stability of the connection of the valve seat 1.

[0057] like Figure 2-Figure 4 As shown, the sampling device 100 also includes a support assembly, which is connected to the valve seat 1, and the screw 42 is rotatably connected to the support assembly. When assembling the sampling device 100, the sampling rod assembly 4 can be first connected to the support assembly, and then the support assembly can be connected to the valve seat 1. The support assembly and the valve seat 1 are separately arranged, which can facilitate the assembly of the sampling device 100.

[0058] The valve seat 1 is provided with an observation window 13, which can be optionally extended along the axial direction of the valve seat 1 and is a long strip structure. The observation window 13 is connected to the through hole 14, and the screwing out of the sealing sleeve 41 can be observed through the observation window 13.

[0059] The outer side of the valve seat 1 is connected to a first connecting plate 2, and the end of the valve seat 1 away from the inlet end 11 is connected to a flange 3. Optionally, a reinforcing plate 50 is connected between the flange 3 and the valve seat 1 to prevent the flange 3 from deforming. Furthermore, two reinforcing plates 50 are evenly spaced along the circumference of the valve seat 1.

[0060] The support assembly includes a support gland 5 and a rear valve seat 6, a portion of the support gland 5 is disposed in the through hole 14, a sealing sleeve 41 is slidably disposed in the support gland 5, and at least a portion of the screw 42 is located in the support gland 5, so that the support gland 5 supports the screw 42. Another portion of the support gland 5 is connected to the first connecting plate 2 through the observation window 13 to fix the support gland 5 on the valve seat 1. Specifically, the support gland 5 can be connected to the first connecting plate 2 by a first bolt 30.

[0061] The rear valve seat 6 is connected to the flange 3. Specifically, the rear valve seat 6 is located on a side of the flange 3 away from the inlet end 11 of the valve seat 1 to facilitate the connection of the rear valve seat 6. The rear valve seat 6 can be connected to the flange 3 by a second bolt 40. The screw rod 42 is penetrated through the rear valve seat 6 and is rotatably connected to the rear valve seat 6, so that the rear valve seat 6 supports the screw rod 42.

[0062] like Figure 2 and Figure 3 As shown, optionally, the support gland 5 includes a sleeve 51 and a second connection portion 52 connected to one end of the sleeve 51, the sealing sleeve 41 is slidably arranged in the sleeve 51, and the second connection portion 52 passes through the observation window 13 and is connected to the first connection plate 2. In this embodiment, the second connection portion 52 is a lug connected to one end of the sleeve 51, so that the second connection portion 52 passes through the observation window 13 and is connected to the first connection plate 2. Furthermore, lugs can be provided on both opposite sides of the sleeve 51. The support gland 5 has a simple structure and can effectively support the sampling rod assembly 4 and fix itself.

[0063] A nylon sleeve 7 is provided between the rear valve seat 6 and the screw 42. The cost of the nylon sleeve 7 is low, and the screw 42 can be easily rotated. A rolling bearing may be provided instead of the nylon sleeve 7 between the rear valve seat 6 and the screw 42, but the price of the rolling bearing is relatively high.

[0064] A sealing packing 8 is provided between the end surface of the sealing sleeve 41 and the valve seat 1 to prevent material leakage. Optionally, the sealing packing 8 is a graphite-reinforced polytetrafluoroethylene packing, which is safe for use in most media corrosion and is also easy to replace.

[0065] like Figure 2 and Figure 3As shown, a section of the screw rod 42 extends out of the valve seat 1 and is connected to the rocker 20, so that the screw rod 42 can be rotated by shaking the rocker 20. Optionally, the rocker 20 and the screw rod 42 are connected by a key, and a screw hole can be opened on the rocker 20, and the set screw 60 is connected to the threaded hole and pressed against the screw rod 42, thereby improving the connection strength between the rocker 20 and the screw rod 42.

[0066] like Figure 1 As shown, this embodiment further provides a production system, which includes a material production device 200 and a sampling component 100 detachably connected to the material production device 200 .

[0067] Although the utility model has been described in detail above by means of general description, specific implementation methods and tests, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A sampling device, characterized in that: The sampling device is used to be connected to the material production device (200) and is arranged to be inclined downward from an end close to the material production device (200) to an end away from the material production device (200); the sampling device comprises: A valve seat (1), wherein the inlet end (11) of the valve seat (1) is used to be connected to the material production device (200), the valve seat (1) is provided with a through hole (14) along the axial direction, and the side wall of the valve seat (1) is provided with a discharge port (12) connected to the through hole (14); The sampling rod assembly (4) comprises a sealing sleeve (41) and a screw (42), wherein the sealing sleeve (41) is slidably disposed in the through hole (14), and the screw (42) is rotatably connected to the valve seat (1). The sealing sleeve (41) and the screw (42) are sequentially disposed away from the inlet end (11) of the valve seat (1), and one end of the sealing sleeve (41) is provided with an internal thread which is threadably connected to the external thread of the screw (42) so that the sealing sleeve (41) slides along the through hole (14) to open or close the discharge port (12).

2. The sampling device according to claim 1, characterized in that: The through hole (14) comprises a first straight hole portion (141), a tapered sealing hole portion (142) and a second straight hole portion (143) which are arranged in sequence, wherein the first straight hole portion (141) is arranged close to the inlet end (11) of the valve seat (1), the large diameter end of the tapered sealing hole portion (142) is connected to the second straight hole portion (143), and the small diameter end is connected to the first straight hole portion (141), and the discharge port (12) is directly opposite to the tapered sealing hole portion (142); The sealing sleeve (41) includes a first portion (411), a tapered portion (412) and a second portion (413) which are connected in sequence, the tapered portion (412) can be sealingly inserted in the tapered sealing hole portion (142), the first portion (411) can be slidably inserted in the first straight hole portion (141), and at least the tapered portion (412) and the second portion (413) can be slidably inserted in the second straight hole portion (143).

3. The sampling device according to claim 2, characterized in that: The taper of the tapered sealing hole portion (142) is 12°-18°.

4. The sampling device according to claim 1, characterized in that: The discharge port (12) is connected to a discharge pipe (10), and an axial direction of the discharge pipe (10) and the valve seat (1) form an included angle.

5. The sampling device according to any one of claims 1 to 4, characterized in that: The sampling device further comprises a support assembly, wherein the support assembly is connected to the valve seat (1), and the screw rod (42) is rotatably connected to the support assembly.

6. The sampling device according to claim 5, characterized in that: The valve seat (1) is provided with an observation window (13), and the observation window (13) is communicated with the through hole (14); the outer side of the valve seat (1) is connected to a first connecting plate (2), and the end of the valve seat (1) away from the inlet end (11) is connected to a flange (3); The support assembly comprises: A support gland (5), part of which is arranged in the through hole (14), the sealing sleeve (41) is slidably arranged in the support gland (5), and at least part of the screw rod (42) is located in the support gland (5); another part of the support gland (5) passes through the observation window (13) and is connected to the first connecting plate (2); The rear valve seat (6) is connected to the flange (3), and the screw (42) passes through the rear valve seat (6) and is rotatably connected to the rear valve seat (6).

7. The sampling device according to claim 6, characterized in that: The support gland (5) comprises a sleeve (51) and a second connecting portion (52) connected to one end of the sleeve (51), the sealing sleeve (41) is slidably inserted into the sleeve (51), and the second connecting portion (52) passes through the observation window (13) and is connected to the first connecting plate (2).

8. The sampling device according to claim 7, characterized in that: A nylon sleeve (7) or a rolling bearing is provided between the rear valve seat (6) and the screw (42), and / or A sealing filler (8) is provided between the end surface of the sealing sleeve (41) and the valve seat (1).

9. The sampling device according to any one of claims 1 to 4, characterized in that: A section of the screw rod (42) extends out of the valve seat (1) and is connected to a rocker (20).

10. The sampling device according to any one of claims 1 to 4, characterized in that: The end surface of the sealing sleeve (41) can be flush with the inlet end (11) of the valve seat (1), and / or The sampling rod assembly (4) further comprises a spiral stirring cage component (9), wherein the spiral stirring cage component (9) comprises a mounting shaft (91) and a spiral blade (92), wherein the spiral blade (92) is spirally connected to the mounting shaft (91), and the mounting shaft (91) is connected to one end of the sealing sleeve (41) close to the inlet end (11) of the valve seat (1).

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