Weighing funnel

Abstract

The weighing funnel comprises a funnel body and a sealing plug, the hopper body comprises an inverted circular truncated cone cylinder and a lower vertical cylinder, the lower vertical cylinder vertically extends downwards from the lower end of the inverted circular truncated cone cylinder, and an inner cavity of the lower vertical cylinder is communicated with a cavity body of the inverted circular truncated cone cylinder; the sealing plug is provided with an inverted circular truncated cone part and a plurality of straight rods, the straight rods vertically extend downwards from the lower horizontal end face of the inverted circular truncated cone part, the straight rods are spaced from one another in the circumferential direction to form a plurality of gaps, and the gaps are set to be larger than the maximum particle size of the particle raw materials; when the sealing plug is mounted in the hopper body, the inverted circular truncated cone part is in sealing fit with the inner wall of the inverted circular truncated cone cylinder so that particle raw materials can be placed in the inverted circular truncated cone cylinder, and the straight rods are inserted into the lower vertical cylinder; when the weighing funnel is installed on a quartz ampoule bottle with a thin bottle opening, the thin bottle opening is sleeved with the lower vertical cylinder, the multiple straight rods are pushed upwards by the upper end face of the thin bottle opening, and particle raw materials enter an inner cavity of the lower vertical cylinder through a gap between the inverted circular truncated cone part and the inner wall of the circular truncated cone cylinder and gaps of the multiple straight rods and then enter the thin bottle opening.

Description

Technical Field

[0001] This disclosure relates to the field of weighing instruments, and more specifically to a weighing funnel. Background Technology

[0002] Chalcogenide glasses are a collective term for non-oxide amorphous (glass) materials formed by chalcogen elements (S, Se, Te) and elements with weak electronegativity such as As, Ga, and Ge. Due to their weak bond strength and large atomic mass, chalcogenide glasses have a relatively long infrared transmission cutoff wavelength. Chalcogenide glass lenses are increasingly widely used in military and civilian fields such as battlefield reconnaissance, vehicle navigation, security monitoring, fire source location in firefighting, rapid temperature measurement in medical diagnosis, and infrared night vision equipment.

[0003] The raw materials used in the preparation of chalcogenide glasses, such as S, Se, Te, As, Ge, Sb, and Sn, are all granular and vary in size. Narrow-necked quartz ampoules are typically used to hold these raw materials. Weighing funnels are generally used to guide the flow of these granular chalcogenide glass raw materials within the narrow-necked quartz ampoules.

[0004] Figure 1 This is a cross-sectional view of a traditional weighing funnel 100', in which the tapering cylinder 12' of the weighing funnel 100' is inserted into the narrow neck 200a of a narrow-necked quartz ampoule 200, and the inverted frustum cylinder 11' of the weighing funnel 100' does not contain any particulate material 300. For example... Figure 1 As shown, the weighing funnel 100' is composed of a funnel body 1', which is composed of an inverted frustum cylinder 11' and a tapering cylinder 12'. The tapering cylinder 12' extends downward from the lower end of the inverted frustum cylinder 11' and the inner cavity 121' of the tapering cylinder 12' is connected to the cavity 111' of the inverted frustum cylinder 11'.

[0005] Figure 2 yes Figure 1 A cross-sectional view of the inverted frustum 11' of the weighing funnel 100' containing particulate material 300, and the particulate material 300 entering the narrow neck 200a of the narrow-neck quartz ampoule 200 through the tapered tube 12' of the weighing funnel 100'.

[0006] Because the tapered cylinder 12' needs to be inserted into the narrow neck 200a of the narrow-neck quartz ampoule 200, and the inner diameter of the tapered cylinder 12' is smaller than the inner diameter of the narrow neck 200a of the narrow-neck quartz ampoule 200 and tapes down from top to bottom in the vertical direction D, the probability of the granular raw material 300 of chalcogenide glass (here, for ease of explanation, the granular raw material of chalcogenide glass is also represented by the attached reference numeral 300) getting stuck in the tapered cylinder 12' when it is filled into the narrow-neck quartz ampoule, the filling efficiency of the granular raw material 300 of chalcogenide glass is low.

[0007] Since the tapered cylinder 12' needs to be inserted into the narrow neck 200a of the narrow-neck quartz ampoule 200, and the inner diameter of the tapered cylinder 12' is smaller than the inner diameter of the narrow neck 200a of the narrow-neck quartz ampoule 200 and tapes down from top to bottom in the vertical direction D, in order to reduce the probability that the granular raw material 300 will easily clog the tapered cylinder 12' when the chalcogenide glass granules are loaded into the narrow-neck quartz ampoule, it is necessary to use chalcogenide glass granules 300 with a smaller particle size range. However, the smaller particle size range of chalcogenide glass granules 300 will lead to an increase in the price of chalcogenide glass granules 300, thereby increasing the cost of chalcogenide glass granule raw material 300.

[0008] Furthermore, since the weighing funnel 100' is composed of a funnel body 1', which is composed of an inverted frustum cylinder 11' and a tapering cylinder 12', there is no opening or closing communication structure between the inner cavity 121' of the connected tapering cylinder 12' and the cavity 111' of the inverted frustum cylinder 11'. This makes it impossible for the weighing funnel 100' to be used independently as a weighing container for holding the raw material particles 300 of chalcogenide glass. For example, when the weighing funnel 100' is used to hold the granular raw material 300, it is necessary to first use another container (such as a weighing boat) to hold the granular raw material 300.

[0009] Therefore, further improvements are needed to the weighing funnel. Utility Model Content

[0010] In view of the problems existing in the background art, one object of this disclosure is to provide a weighing funnel that can reduce or even eliminate the probability of particulate raw materials being blocked in the weighing funnel and being loaded into the corresponding part of the narrow mouth of the narrow-mouth quartz ampoule, thereby improving the efficiency of the particulate raw material loading operation.

[0011] Another object of this disclosure is to provide a weighing funnel that is applicable to raw material particles with a wider range of particle sizes, thereby reducing the price and cost of granular raw materials.

[0012] Another object of this disclosure is to provide a weighing funnel that can be used as a weighing container for holding raw material particles, thereby improving the efficiency of loading operations for granular raw materials.

[0013] Therefore, a weighing funnel is provided, comprising a funnel body and a sealing plug; the funnel body includes an inverted frustum cylinder and a lower vertical cylinder, the lower vertical cylinder extending vertically downward from the lower end of the inverted frustum cylinder, the inner cavity of the lower vertical cylinder communicating with the cavity of the inverted frustum cylinder; the sealing plug has an inverted frustum portion and a plurality of straight rods, the inverted frustum portion having a shape complementary to the lower portion of the inner wall of the inverted frustum cylinder, the plurality of straight rods extending vertically downward from the lower horizontal end face of the inverted frustum portion, the plurality of straight rods being circumferentially spaced apart to form a plurality of downwardly extending gaps, each gap being set to be larger than the maximum particle size of the particulate material; the sealing plug and the funnel body are used to: when the sealing plug is installed in the funnel body, the inverted frustum portion sealingly fits against the lower portion of the inner wall of the inverted frustum cylinder to push the inner cavity of the lower vertical cylinder... The end is sealed to allow granular raw materials to be placed into the cavity of the inverted frustum cylinder, and multiple straight rods are inserted into the lower vertical cylinder. When the weighing funnel is installed on the narrow-mouth quartz ampoule, the lower vertical cylinder is fitted onto the narrow mouth of the narrow-mouth quartz ampoule. The upper end of the narrow mouth pushes the multiple straight rods upward to make the sealing plug move vertically upward, the inverted frustum part disengages from the inner wall of the inverted frustum cylinder, and the upper ends of the multiple straight rods extend upward beyond the lower end of the inner wall of the inverted frustum cylinder so that the gap formed between the inverted frustum part and the inner wall of the frustum cylinder is larger than the maximum particle size of the granular raw materials. Thus, the granular raw materials in the inverted frustum cylinder enter the inner cavity of the lower vertical cylinder through the gap between the inverted frustum part and the inner wall of the frustum cylinder and the gaps between the multiple straight rods spaced apart circumferentially, and then enter the narrow mouth of the ampoule.

[0014] The beneficial effects of this disclosure are as follows.

[0015] In the weighing funnel according to this disclosure, since the lower vertical cylinder is fitted onto the narrow neck of the quartz ampoule when the weighing funnel is installed on the narrow neck, the gaps are set to be larger than the maximum particle size of the particulate material, and the upper ends of multiple straight rods extend upward beyond the lower end of the inner wall of the inverted frustum cylinder when the weighing funnel is installed on the quartz ampoule, so that the gap formed between the inverted frustum and the inner wall of the frustum cylinder is larger than the maximum particle size of the particulate material, the lower vertical cylinder will not occupy the space inside the narrow neck of the quartz ampoule. The space inside the narrow neck of the quartz ampoule is larger in inner diameter than that in the prior art, allowing particulate material to enter. This reduces or even eliminates the probability of particulate material blocking the weighing funnel and filling the corresponding part (i.e., the lower vertical cylinder) into the narrow neck of the quartz ampoule, thereby improving the efficiency of the particulate material filling operation.

[0016] In the weighing funnel according to this disclosure, because when the weighing funnel is installed on the narrow-necked quartz ampoule, the lower vertical cylinder fits over the narrow neck of the quartz ampoule, the gaps are set to be larger than the maximum particle size of the particulate material, and when the weighing funnel is installed on the narrow-necked quartz ampoule, the upper ends of the multiple straight rods extend upward beyond the lower ends of the inner wall of the inverted frustum cylinder so that the gap formed between the inverted frustum and the inner wall of the frustum cylinder is larger than the maximum particle size of the particulate material, the lower vertical cylinder will not occupy the narrow neck of the quartz ampoule. Compared to the prior art, the narrow neck of the quartz ampoule has a larger inner diameter, allowing more granular material to enter. This reduces the probability of granular material getting stuck in the weighing funnel and being loaded into the corresponding part (i.e., the lower vertical cylinder) of the narrow neck quartz ampoule, thus eliminating the need for smaller particle sizes and avoiding the price increase associated with smaller particle sizes. Furthermore, because the narrow neck of the quartz ampoule allows for a larger inner diameter for granular material (provided that the gaps are set larger than the maximum particle size and the upper ends of the multiple straight rods extend upwards beyond the lower end of the inner wall of the inverted frustum cylinder when the weighing funnel is installed on the narrow neck quartz ampoule, so that the gap between the inverted frustum and the inner wall of the frustum cylinder is larger than the maximum particle size), it can accommodate granular material with a wider particle size range, resulting in lower granular material prices and costs.

[0017] In the weighing funnel according to this disclosure, the opening and closing of the communication between the inner cavity of the lower vertical cylinder and the cavity of the inverted truncated cone can be controlled by the arrangement of a sealing plug having an inverted truncated cone portion and multiple straight rods, the cooperation between the inverted truncated cone portion and the lower part of the inner wall of the inverted truncated cone cylinder, and the movement relationship between the multiple straight rods and the upper end face b of the narrow bottle neck. When the communication between the inner cavity of the lower vertical cylinder and the cavity of the inverted truncated cone cylinder is closed (i.e. disconnected) by the sealing plug, the weighing funnel can be used independently as a weighing container for holding raw material particles, as shown in the figure. That is, in addition to being a filling guide for introducing raw material particles into narrow-neck quartz ampoules, which is common to the weighing funnel of the prior art, the weighing funnel according to this disclosure can also be used as a weighing container for holding raw material particles, thereby improving the efficiency of the filling operation of granular raw materials.

[0018] In the weighing funnel according to this disclosure, the raw material particles are applicable not only to the raw material particles of chalcogenide glass mentioned in the background art, but also to raw material particles of other materials. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of a traditional weighing funnel, in which the tapering cylinder of the weighing funnel is inserted into the narrow mouth of a quartz ampoule, and the inverted frustum of the weighing funnel does not contain any particulate material.

[0020] Figure 2 yes Figure 1 A cross-sectional view of a weighing funnel containing granular raw materials, with the granular raw materials entering the narrow neck of a quartz ampoule through the tapering cylinder of the weighing funnel.

[0021] Figure 3 Dissecting view of the weighing funnel according to this disclosure.

[0022] Figure 4 Show Figure 3 The weighing funnel's sealing plug and the initial assembly state of the funnel body.

[0023] Figure 5 Show Figure 3 The final assembly state of the weighing funnel's sealing plug and body.

[0024] Figure 6 Shown in Figure 5 In the final assembled state, the particulate raw material is placed into the cavity of the inverted frustum cylinder for weighing.

[0025] Figure 7 This shows the installation of a narrow-neck quartz ampoule into... Figure 6 The state of the weighing funnel;

[0026] Figure 8 Showing a narrow-necked quartz ampoule bottle from Figure 6 The state is such that the sealing plug is pushed upwards to allow the granular raw material to enter the inner cavity of the lower vertical cylinder through the gap between the inverted frustum and the inner wall of the frustum and the gap between the multiple straight rods, and thus enter the narrow mouth of the narrow-mouth quartz ampoule.

[0027] The annotations in the attached figures are explained as follows:

[0028] D. Inner cylinder (up and down direction) 14

[0029] 100' Weighing Funnel 141 Guide Hole

[0030] 1' Bucket body 142 concave part

[0031] 11' Inverted frustum cylinder 143 Lower horizontal ring end face

[0032] 111' cavity 144 annular flange

[0033] 12' tapered tube, 15' annular base

[0034] 121' Inner cavity 151 Annular horizontal plate

[0035] 200mm narrow-neck quartz ampoule, 152mm connecting tube

[0036] 200a narrow bottle neck, 152a guide surface

[0037] 200b upper end face 2 sealing plugs

[0038] 200c bottle body with 21 inverted frustum section

[0039] 300 particles of raw material 211 lower horizontal end face

[0040] 100 Weighing funnel 212 Upper horizontal end face

[0041] 1 bucket body 22 straight rods

[0042] 11 Inverted frustum tube G gap

[0043] 111 cavity 23 protrusion

[0044] 12 Lower vertical cylinders 24 Right circular conical parts

[0045] 121 Inner cavity S gap

[0046] 13 Upper Vertical Cylinder Detailed Implementation

[0047] The accompanying drawings illustrate embodiments of this disclosure, and it will be understood that the disclosed embodiments are merely examples of this disclosure, which can be implemented in various forms. Therefore, the specific details disclosed herein should not be construed as limiting, but are intended only as the basis for the claims and as an illustrative basis to teach those skilled in the art how to implement this disclosure in various ways.

[0048] [Weighing funnel]

[0049] Reference Figures 3 to 8 The weighing funnel 100 according to this disclosure includes a funnel body 1 and a sealing plug 2.

[0050] The bucket body 1 includes an inverted frustum cylinder 11 and a lower vertical cylinder 12. The lower vertical cylinder 12 extends vertically downward from the lower end of the inverted frustum cylinder 11, and the inner cavity 121 of the lower vertical cylinder 12 is connected to the cavity 111 of the inverted frustum cylinder 11.

[0051] The sealing plug 2 has an inverted frustum portion 21 and a plurality of straight rods 22. The inverted frustum portion 21 is complementary in shape to the lower part of the inner wall of the inverted frustum cylinder 11. The plurality of straight rods 22 extend vertically downward from the lower horizontal end face 211 of the inverted frustum portion 21. The plurality of straight rods 22 are spaced apart from each other in the circumferential direction to form a plurality of downwardly extending gaps G. Each gap G is set to be greater than the maximum particle size of the particulate raw material 300.

[0052] The sealing plug 2 and the funnel body 1 are used for: when the sealing plug 2 is installed into the funnel body 1, the inverted frustum portion 21 seals against the lower end of the inner wall of the inverted frustum cylinder 11 to seal the top of the inner cavity 121 of the lower vertical cylinder 12 so that the granular raw material 300 can be put into the cavity 111 of the inverted frustum cylinder 11, and multiple straight rods 22 are inserted into the lower vertical cylinder 12; when the weighing funnel 100 is installed on the narrow-neck quartz ampoule 200, the lower vertical cylinder 12 is fitted onto the narrow neck 200a of the narrow-neck quartz ampoule 200, and the upper end face 200b of the narrow neck 200a pushes the multiple straight rods upward. 22 causes the sealing plug 2 to move vertically upward, the inverted frustum portion 21 to disengage from the inner wall of the inverted frustum cylinder 11, and the upper ends of the multiple straight rods 22 to extend upward beyond the lower ends of the inner wall of the inverted frustum cylinder 11 so that the gap S formed between the inverted frustum portion 21 and the inner wall of the frustum cylinder 11 is greater than the maximum particle size of the particulate material 300. Thus, the particulate material 300 in the inverted frustum cylinder 11 enters the inner cavity 121 of the lower vertical cylinder 12 through the gap S between the inverted frustum portion 21 and the inner wall of the frustum cylinder 11 and the gap G between the multiple straight rods 22 spaced apart from each other in the circumferential direction, and then enters the narrow bottle mouth 200a.

[0053] In the weighing funnel 100 according to this disclosure, since the lower vertical cylinder 12 is fitted onto the narrow neck 200a of the narrow neck quartz ampoule 200 when the weighing funnel 100 is installed onto the narrow neck quartz ampoule 200, the gaps G are set to be larger than the maximum particle size of the particulate material 300, and the upper ends of the plurality of straight rods 22 extend upward beyond the lower ends of the inner wall of the inverted frustum cylinder 11 when the weighing funnel 100 is installed onto the narrow neck quartz ampoule 200, the gap S formed between the inverted frustum portion 21 and the inner wall of the frustum cylinder 11 is larger than the maximum particle size of the particulate material 300. With a large particle size, the lower vertical cylinder 12 will not occupy the space inside the narrow mouth 200a of the quartz ampoule 200. Compared with the prior art, the space inside the narrow mouth 200a of the quartz ampoule 200 has a larger inner diameter to allow the granular raw material 300 to enter. This reduces or even eliminates the probability of the granular raw material 300 getting stuck in the weighing funnel 100 and being filled into the corresponding part (i.e., the lower vertical cylinder 12) of the narrow mouth 200a of the narrow mouth quartz ampoule 200, thereby improving the filling efficiency of the granular raw material 300.

[0054] In the weighing funnel 100 according to this disclosure, since the lower vertical cylinder 12 is fitted onto the narrow neck 200a of the narrow neck quartz ampoule 200 when the weighing funnel 100 is installed onto the narrow neck quartz ampoule 200, the gaps G are set to be larger than the maximum particle size of the particulate material 300, and the upper ends of the plurality of straight rods 22 extend upward beyond the lower ends of the inner wall of the inverted frustum cylinder 11 when the weighing funnel 100 is installed onto the narrow neck quartz ampoule 200, so that the gap S formed between the inverted frustum portion 21 and the inner wall of the frustum cylinder 11 is larger than the maximum particle size of the particulate material 300, the lower vertical cylinder 12 will not occupy the narrow neck of the quartz ampoule 200. Compared with the prior art, the space within the narrow opening 200a of the quartz ampoule 200 has a larger inner diameter, allowing the granular raw material 300 to enter. The probability of the granular raw material 300 being blocked in the weighing funnel 100 and being loaded into the corresponding part (i.e., the lower vertical cylinder 12) of the narrow opening 200a of the narrow-mouth quartz ampoule 200 is reduced or even zero. Therefore, there is no need to use raw material granules 300 with a smaller particle size range, thus avoiding the problem of the price increase of granular raw material 300 due to a smaller particle size range, and preventing the increase in the cost of granular raw material 300. Of course, since the space inside the narrow mouth 200a of the quartz ampoule 200 is larger in inner diameter than that of the prior art, it allows the particulate material 300 to enter (provided that each gap G is set to be larger than the maximum particle size of the particulate material 300 and the upper ends of the multiple straight rods 22 extend upward beyond the lower end of the inner wall of the inverted frustum cylinder 11 when the weighing funnel 100 is installed on the narrow mouth quartz ampoule 200 so that the gap S formed between the inverted frustum portion 21 and the inner wall of the frustum cylinder 11 is larger than the maximum particle size of the particulate material 300), it is possible to use particulate material 300 with a larger particle size range, which reduces the price of particulate material 300 and the cost of particulate material 300.

[0055] In the weighing funnel 100 according to this disclosure, the opening and closing of the communication between the inner cavity 121 of the lower vertical cylinder 12 and the cavity 111 of the inverted truncated cylinder 11 is controlled by the arrangement of the sealing plug 2 having an inverted truncated cone portion 21 and a plurality of straight rods 22, the cooperation between the inverted truncated cone portion 21 and the portion near the lower end of the inner wall of the inverted truncated cylinder 11, and the movement relationship between the plurality of straight rods 22 and the upper end face 200b of the narrow bottle mouth 200a. When the communication between the inner cavity 121 of the lower vertical cylinder 12 and the cavity 111 of the inverted truncated cylinder 11 is closed (i.e. disconnected) by the sealing plug 2, the weighing funnel 100 can be used independently as a weighing container for holding raw material particles 300, such as Figure 6 As shown. That is, in addition to serving as a feeding guide for introducing raw material particles 300 into narrow-necked quartz ampoules 200, which is common to the weighing funnel 100' in the prior art, the weighing funnel 100 according to this disclosure can also be used as a weighing container for holding raw material particles 300, thereby improving the efficiency of the feeding operation of the particle raw material 300.

[0056] In the weighing funnel 100 according to this disclosure, the raw material particles 300 are applicable not only to the raw material particles of chalcogenide glass mentioned in the background art, but also to raw material particles of other materials.

[0057] In one example, the inner circumferential surface of the lower vertical tube 12 is configured to have a clearance fit with the outer circumferential surface of the narrow neck 200a of the narrow-neck quartz ampoule 200. For example, the clearance of the clearance fit should be as small as possible while ensuring that the lower vertical tube 12 can be smoothly fitted onto the narrow neck 200a of the narrow-neck quartz ampoule 200.

[0058] like Figures 3 to 8 As shown, in one example, the funnel body 1 also includes an upper vertical cylinder 13, which extends vertically upward from the upper end of the inverted frustum cylinder 11. This increases the internal volume of the funnel body 1, thereby enabling it to be used for filling larger-volume narrow-neck quartz ampoules 200, and improving the adaptability of the weighing funnel 100 to narrow-neck quartz ampoules 200 of various volumes.

[0059] like Figures 3 to 8 As shown, the bucket body 1 also has an inner cylinder 14, which extends downward from the lower end of the inner wall of the inverted frustum cylinder 11. The outer circumferential surface of the inner cylinder 14 is integral with the inner circumferential surface of the lower vertical cylinder 12. The cylinder wall of the inner cylinder 14 is provided with a plurality of guide holes 141 that are spaced apart from each other in the circumferential direction and pass through in the vertical direction D. Each guide hole 141 is used for the corresponding straight rod 22 of the sealing plug 2 to be inserted into the bucket body 1 and for the corresponding straight rod 22 to be exposed downward. By cooperating with the corresponding straight rods 22 of the sealing plug 2 through the multiple guide holes 141 of the inner cylinder 14, the corresponding straight rods 22 of the sealing plug 2 are restricted in the radial direction, thereby ensuring the stability of the vertical movement of the sealing plug 2 in the vertical direction D when it is pushed upward by the upper end face 200b of the narrow bottle mouth 200a. Thus, the stability of the gap S between the inverted frustum portion 21 and the inner wall of the frustum cylinder 11, the stability of the flow of the particulate material 300 in the inverted frustum cylinder 11 through the gap S to the gaps G of the multiple straight rods 22 that are spaced apart from each other in the circumferential direction, and the stability of the flow of the particulate material 300 into the inner cavity 121 of the lower vertical cylinder 12 and then into the narrow bottle mouth 200a are ensured.

[0060] The maximum value of the gap S between the inverted frustum portion 21 and the inner wall of the frustum cylinder 11 can be determined based on the vertical length D of each guide hole 141 and the vertical length D of each straight rod 22, according to actual needs (e.g., the maximum particle size of the raw material particles 300). In one example, refer to... Figure 3The length of each guide hole 141 along the vertical direction D is less than one-third of the length of the lower vertical cylinder 12; the length of each straight rod 22 along the vertical direction D is at least twice the length of the corresponding guide hole 141 along the vertical direction D, but less than the length of the lower vertical cylinder 12 along the vertical direction D. As long as the upper end of the multiple straight rods 22 extends upward beyond the lower end of the inner wall of the inverted frustum cylinder 11 when the weighing funnel 100 is installed on the narrow-mouth quartz ampoule 200, so that the gap S formed between the inverted frustum part 21 and the inner wall of the frustum cylinder 11 is larger than the maximum particle size of the particulate raw material 300, the better.

[0061] like Figure 3 and Figure 4 As shown, in one example, the inner cylinder 14 has a downwardly recessed portion 142 at its top; the sealing plug 2 also has a protrusion 23 that protrudes downward from the lower horizontal end face 211 of the truncated cone portion 21 and is surrounded by a plurality of straight rods 22. The protrusion 23 is used to receive and support the sealing plug 2 in the recess 142 of the inner cylinder 14 when it is installed into the bucket body 1. The cooperation of the recess 142 and the protrusion 23 improves the reliability of the sealing plug 2 in closing the top of the inner cavity 121 of the lower vertical cylinder 12. For example, the protrusion 23 and the recess 142 are complementary in shape.

[0062] like Figure 3 As shown, in one example, the inner cylinder 14 has a lower horizontal ring end face 143 at the bottom, and each guide hole 141 opens into the lower horizontal ring end face 143. The lower horizontal ring end face 143 is used to abut against the upper end face 200b of the narrow bottle mouth 200a of the narrow bottle mouth 200 when the weighing funnel 100 is installed on the narrow bottle mouth quartz ampoule 200 and the lower ends of the plurality of straight rods 22 are respectively retracted upward into the plurality of guide holes 141.

[0063] Furthermore, such as Figure 3 As shown, the inner cylinder 14 also has an annular flange 144 at the bottom. The annular flange 144 extends downward from the radially inner end of the lower horizontal ring end face 143. The annular flange 144 is used to: when the weighing funnel 100 is installed on the narrow-neck quartz ampoule 200 and the lower horizontal ring end face 143 abuts against the upper end face 200b of the narrow-neck quartz ampoule 200, the annular flange 144 protrudes into the narrow-neck quartz ampoule 200, preventing the particulate material 300 entering the narrow-neck quartz ampoule 200 from entering the upper end face 200b of the narrow-neck quartz ampoule 200. This avoids the presence of particulate material 300 on the upper end face 200b of the narrow-neck quartz ampoule 200 after the particulate material 300 has been filled into the narrow-neck quartz ampoule 200, thereby avoiding the loss of particulate material 300. More specifically, such as Figure 3As shown, in one example, the inner circumferential surface of the annular flange 144 is a vertical surface and coplanar with the inner circumferential surface of the inner cylinder 14; the outer circumferential surface of the annular flange 144 is an inclined surface that slopes downward and radially inward from the radially inner end of the lower horizontal ring end face 143. Furthermore, the degree to which the annular flange 144 protrudes into the narrow neck 200a of the narrow-neck quartz ampoule 200 is minimized, as long as it prevents the particulate material 300 entering the narrow neck 200a from entering the upper end face 200b of the narrow neck 200a.

[0064] The closer the inner diameter of the inner cylinder 14 is to the inner diameter of the narrow neck 200a of the narrow-neck quartz ampoule 200, the better. For example, the inner diameter of the inner cylinder 14 is set to be within 1 mm of the inner diameter of the narrow neck 200a of the narrow-neck quartz ampoule 200.

[0065] like Figure 3 As shown, in one example, the bucket body 1 also includes an annular base 15, which is connected to the lower end of the lower vertical cylinder 12; the annular base 15 has an annular horizontal plate 151, which is used to support the bucket body 1 on a work platform (e.g., an electronic balance) when not in use. Of course, Figure 6 The state can also be completed when the bucket body 1 is supported on the working platform.

[0066] like Figure 3 As shown, in one example, the annular base 15 also has a connecting cylinder 152. The upper end of the connecting cylinder 152 is connected to the lower end of the lower vertical cylinder 12, and the lower end of the connecting cylinder 152 is connected to the inner side of the annular horizontal plate 151. The inner circumferential surface of the connecting cylinder 152 has a guide surface 152a that gradually narrows from bottom to top and whose upper edge is coplanar with the inner circumferential surface of the lower vertical cylinder 12. The guide surface 152a is used to guide the narrow bottle neck 200a of the narrow bottle neck quartz ampoule 200 into the lower vertical cylinder 12 and form a clearance fit with the inner circumferential surface of the lower vertical cylinder 12 when the weighing funnel 100 is installed on the narrow bottle neck quartz ampoule 200.

[0067] For example, refer to Figure 3 In one example, the number of straight rods 22 is four that are circumferentially evenly distributed. The number of straight rods 22 is such that the sealing plug 2 is as few as possible while maintaining stable vertical movement in the up-down direction D, so that each gap G is larger than the maximum particle size of the particulate material 300.

[0068] Reference Figures 3 to 8In one example, the sealing plug 2 also has a conical portion 24 extending upward from the upper horizontal end face 212 of the truncated cone portion 21. The conical portion 24 prevents the particulate material 300 from accumulating and remaining on the sealing plug 2 when the weighing funnel 100 is installed on the narrow-neck quartz ampoule 200 and the particulate material 300 enters the narrow-neck quartz ampoule 200 from the weighing funnel 100. This achieves a precise weight of the final completed particulate material 300 entering the narrow-neck quartz ampoule 200 from the weighing funnel 100.

[0069] [test]

[0070] Example 1

[0071] Chalcogenide glass particle raw material weighing operation: Weigh 1225.062g of Se and 774.938g of As with a particle size of 1-5mm and a purity of 5N (i.e., the amount of raw materials is 2kg) and put them into a narrow-mouthed quartz ampoule 200.

[0072] The inner diameter of the narrow-neck quartz ampoule 200a is 16mm, and the inner diameter of the body 200c is 100mm.

[0073] use Figure 3 The weighing funnel 100 shown has the following structure: the inner diameter of the inner cylinder 14 is 15 mm, the inner diameter of the upper vertical cylinder 13 is 150 mm, the length D of each guide hole 141 in the vertical direction is 70% of the inner diameter of the inner cylinder 14 and less than one-third of the length of the lower vertical cylinder 12, and four straight rods 22 are evenly distributed circumferentially. The diameter of each straight rod 22 is 1 / 15 of the inner diameter of the inner cylinder 14, and the length D of each straight rod 22 in the vertical direction is 2.5 times the length D of the corresponding guide hole 141 in the vertical direction but less than the length D of the lower vertical cylinder 12 in the vertical direction.

[0074] Other necessary tools include: an electronic balance (2kg capacity), a spatula, and a shovel.

[0075] The following are the procedures for weighing and batching chalcogenide glass granules as raw materials:

[0076] Will Figure 5 The weighing funnel 100 was placed on the electronic balance to remove the tare. The Se granule raw material was poured into the weighing funnel 100 using a shovel and a spatula and weighed to 1225.062g.

[0077] After weighing, place the lower vertical tube 12 of the weighing funnel 100 onto the narrow mouth 200a of the narrow-mouth quartz ampoule 200, as follows. Figure 7 As shown;

[0078] The upper end face 200b of the narrow-neck quartz ampoule 200, supporting the four straight rods 22 of the sealing plug 2, moves upward. The sealing plug 2 separates from the inner wall of the inverted frustum 11 of the weighing funnel 100. Under the influence of gravity, the particulate material enters the narrow-neck quartz ampoule 200 through the gap S between the sealing plug 2 and the inner wall of the inverted frustum 11 of the weighing funnel 100, and through the circumferentially spaced gaps G of the four straight rods 22. Figure 8 As shown;

[0079] Repeat the above weighing and loading steps, weigh 774.938g of As granular raw material again and load it into the narrow-mouthed quartz ampoule 100 to complete the weighing and batching of chalcogenide glass granular raw material.

[0080] In the weighing and batching operation of chalcogenide glass granules in Example 1, there was no material blockage. The operation time for the weighing and batching operation of chalcogenide glass granules in Example 1 was 5 minutes.

[0081] Example 2

[0082] Except for changing the particle size to 1-10 mm, everything else is the same as in Example 1.

[0083] In the weighing and batching operation of chalcogenide glass granules in Example 2, there was no material blockage. The operation time for the weighing and batching operation of chalcogenide glass granules in Example 2 was 5 minutes.

[0084] Comparative Example 1

[0085] Chalcogenide glass particle raw material weighing operation: Weigh 1225.062g of Se and 774.938g of As with a particle size of 1-5mm and a purity of 5N (i.e., the amount of raw materials is 2kg) and put them into a narrow-mouthed quartz ampoule 200.

[0086] The inner diameter of the narrow-neck quartz ampoule 200a is 16mm, and the inner diameter of the body 200c is 100mm.

[0087] use Figure 1 The weighing funnel 100' shown in the entire structure has an inner diameter of 6 mm at the bottom of the tapering cylinder 12' and an inner diameter of 150 mm at the top of the inverted frustum cylinder 11'.

[0088] Other required equipment includes: an electronic balance (2kg capacity), a spatula, a shovel, and a weighing boat.

[0089] The following are the procedures for weighing and batching chalcogenide glass granules as raw materials:

[0090] Place the weighing boat on the electronic balance to remove the tare, and use a shovel and spatula to pour the Se granules into the weighing boat and weigh it to 1225.062g.

[0091] After weighing, insert the tapered tube 12' of the weighing funnel 100' into the narrow neck 200a of the narrow-neck quartz ampoule 200, as follows. Figure 1 As shown;

[0092] The Se granular raw material weighed in the weighing boat 1225.062g is slowly poured into the inverted frustum cylinder 11' of the weighing funnel 100', and then guided into the narrow-mouth quartz ampoule 200 through the tapered cylinder 12';

[0093] Repeat the above weighing and loading steps, weigh 774.938g of As granular raw material again and load it into the narrow-mouthed quartz ampoule 200 to complete the weighing and batching of chalcogenide glass granular raw material.

[0094] In the weighing of chalcogenide glass granular raw materials in Comparative Example 1, material blockage frequently occurred during the feeding process of granular raw materials with a particle size of 1-5mm. When material blockage occurred, it was necessary to pour out the granular raw materials from the weighing funnel 100' and clear the blockage before loading and guiding the material. The process was time-consuming and cumbersome. The operation time for weighing chalcogenide glass granular raw materials was 22 minutes, mainly due to the slow feeding and the time spent dealing with material blockage.

[0095] Comparative Example 2

[0096] Except for the particle size being changed to 1-10mm, everything else is the same as in Comparative Example 1.

[0097] The weighing operation of the chalcogenide glass particle raw material in Comparative Example 2 could not be completed because particles larger than 6 mm in the 1-10 mm particle size range would directly block the bottom of the tapered cylinder 12'.

[0098] A comparison of Examples 1-2 and Comparative Examples 1-2 shows that the weighing funnel 100 according to this disclosure eliminates the probability of the particulate raw material 300 getting stuck in the weighing funnel 100 and being loaded into the corresponding part (i.e., the lower vertical cylinder 12) of the narrow bottle mouth 200a of the narrow bottle mouth quartz ampoule 200, thereby improving the loading efficiency of the particulate raw material 300 and making it suitable for using raw material particles 300 with a larger particle size range.

[0099] In addition, the particle size and price of different types of granular raw materials with the same purity of 5N are shown in Table 1 (reference prices in actual procurement and use).

[0100] The larger the allowable particle size range of granular raw materials, the lower the price of granular raw materials. Expanding the range of particle size that can be used can reduce the cost of using granular raw materials. If the particle size range of granular raw materials is small, there will be greater loss during the granulation process and higher production costs.

[0101] Table 1 Comparison of Particle Size and Price of Different Types of 5N Pure Particle Raw Materials

[0102]

[0103]

[0104] Several exemplary embodiments have been described in detail above, but this document is not intended to limit itself to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined to form several other combinations, which are not shown for simplicity.

Claims

1. A weighing funnel, characterized in that, The weighing funnel (100) includes a funnel body (1) and a sealing plug (2); The bucket body (1) includes an inverted frustum cylinder (11) and a lower vertical cylinder (12). The lower vertical cylinder (12) extends vertically downward from the lower end of the inverted frustum cylinder (11), and the inner cavity (121) of the lower vertical cylinder (12) is connected to the cavity (111) of the inverted frustum cylinder (11). The sealing plug (2) has an inverted frustum portion (21) and a plurality of straight rods (22). The inverted frustum portion (21) is complementary in shape to the lower part of the inner wall of the inverted frustum cylinder (11). The plurality of straight rods (22) extend vertically downward from the lower horizontal end face (211) of the inverted frustum portion (21). The plurality of straight rods (22) are spaced apart from each other circumferentially to form a plurality of downwardly extending gaps (G). Each gap (G) is set to be larger than the maximum particle size of the particulate raw material (300). The sealing plug (2) and the hopper (1) are used for: when the sealing plug (2) is installed into the hopper (1), the inverted frustum portion (21) seals against the lower end of the inner wall of the inverted frustum cylinder (11) to seal the top of the inner cavity (121) of the lower vertical cylinder (12) so that the particulate raw material (300) can be put into the cavity (111) of the inverted frustum cylinder (11), and multiple straight rods (22) are inserted into the lower vertical cylinder (12); when the weighing funnel (100) is installed on the narrow-mouth quartz ampoule (200), the lower vertical cylinder (12) is fitted onto the narrow mouth (200a) of the narrow-mouth quartz ampoule (200), and the upper end face (200b) of the narrow mouth (200a) pushes the multiple straight rods upward. (22) The sealing plug (2) moves vertically upward, the inverted frustum (21) disengages from the inner wall of the inverted frustum cylinder (11), and the upper ends of the multiple straight rods (22) extend upward beyond the lower end of the inner wall of the inverted frustum cylinder (11) so that the gap (S) formed between the inverted frustum (21) and the inner wall of the frustum cylinder (11) is greater than the maximum particle size of the particulate material (300). Thus, the particulate material (300) in the inverted frustum cylinder (11) enters the inner cavity (121) of the lower vertical cylinder (12) through the gap (S) between the inverted frustum (21) and the inner wall of the frustum cylinder (11) and the gap (G) between the multiple straight rods (22) spaced apart from each other in the circumferential direction, and then enters the narrow bottle mouth (200a).

2. The weighing funnel according to claim 1, characterized in that, The bucket body (1) also has an inner cylinder (14), The inner cylinder (14) extends downward from the lower end of the inner wall of the inverted frustum cylinder (11), and the outer circumferential surface of the inner cylinder (14) is integral with the inner circumferential surface of the lower vertical cylinder (12). The inner cylinder (14) has a plurality of guide holes (141) spaced apart from each other in the circumferential direction and extending in the vertical direction (D). Each guide hole (141) is used to allow the corresponding straight rod (22) of the sealing plug (2) to be inserted into the bucket body (1) and to expose the corresponding straight rod (22) downward.

3. The weighing funnel according to claim 2, characterized in that, The length of each guide hole (141) along the vertical direction (D) is less than one-third of the length of the lower vertical cylinder (12); The length of each straight rod (22) along the vertical direction (D) is at least twice the length of the corresponding guide hole (141) along the vertical direction (D), but less than the length of the lower vertical cylinder (12) along the vertical direction (D).

4. The weighing funnel according to claim 2, characterized in that, The inner cylinder (14) has a downward recess (142) at the top; The sealing plug (2) also has a protrusion (23) that protrudes downward from the lower horizontal end face (211) of the inverted frustum portion (21) and is surrounded by a plurality of straight rods (22). The protrusion (23) is used to receive and support the sealing plug (2) in the recess (142) of the inner cylinder (14) when it is installed into the bucket body (1).

5. The weighing funnel according to claim 2, characterized in that, The inner cylinder (14) has a lower horizontal ring end face (143) at the bottom, and each guide hole (141) opens into the lower horizontal ring end face (143). The lower horizontal ring end face (143) is used to abut against the upper end face (200b) of the narrow bottle mouth (200a) of the narrow bottle mouth quartz ampoule (200) when the weighing funnel (100) is installed on the narrow bottle mouth quartz ampoule (200) and the lower ends of the multiple straight rods (22) are respectively retracted upward into the multiple guide holes (141).

6. The weighing funnel according to claim 5, characterized in that, The inner cylinder (14) also has an annular flange (144) at the bottom. The annular flange (144) extends downward from the radially inner end of the lower horizontal ring end face (143). The annular flange (144) is used to: when the weighing funnel (100) is installed on the narrow-mouth quartz ampoule (200) and the lower horizontal ring end face (143) abuts against the upper end face (200b) of the narrow mouth (200a) of the narrow-mouth quartz ampoule (200), the annular flange (144) protrudes into the narrow mouth (200a) of the narrow-mouth quartz ampoule (200) to prevent the particulate material (300) entering the narrow mouth (200a) from entering the upper end face (200b) of the narrow mouth (200a).

7. The weighing funnel according to claim 1, characterized in that, The bucket body (1) also includes a ring-shaped base (15), The annular base (15) is connected to the lower end of the lower vertical tube (12); The annular base (15) has an annular horizontal plate (151) for supporting the bucket (1) on the working platform when not in use.

8. The weighing funnel according to claim 7, characterized in that, The annular base (15) also has a connecting cylinder (152). The upper end of the connecting cylinder (152) is connected to the lower end of the lower vertical cylinder (12), and the lower end of the connecting cylinder (152) is connected to the inner side of the annular horizontal plate (151). The inner circumferential surface of the connecting tube (152) has a guide surface (152a) that tapers from bottom to top and whose upper edge is coplanar with the inner circumferential surface of the lower vertical tube (12). The guide surface (152a) is used to guide the narrow neck (200a) of the narrow-neck quartz ampoule (200) into the lower vertical tube (12) and form a clearance fit with the inner circumferential surface of the lower vertical tube (12) when the weighing funnel is installed on the narrow-neck quartz ampoule (200).

9. The weighing funnel according to claim 1, characterized in that, The number of straight rods (22) is four that are evenly distributed in the circumferential direction.

10. The weighing funnel according to claim 1, characterized in that, The sealing plug (2) also has a conical portion (24) that extends upward from the upper horizontal end face (212) of the inverted frustum portion (21). The conical portion (24) is used to prevent the particulate material (300) from accumulating and remaining on the sealing plug (2) when the weighing funnel (100) is installed on the narrow-mouth quartz ampoule (200) and the particulate material (300) enters the narrow-mouth quartz ampoule (200) from the weighing funnel (100).

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