Full-automatic densimeter for measuring plastic density

Abstract

The utility model relates to the field of densimeters, and discloses a full-automatic densimeter for measuring plastic density, which comprises a measuring instrument, the upper surface of the measuring instrument is provided with a quick release assembly, the quick release assembly comprises a support plate, the right surface of the support plate penetrates through and is connected with a shifting block in a sliding manner, and the shifting block is connected with the measuring instrument. A positioning block penetrates through and is slidably connected to the lower surface of the supporting plate, a support is fixedly connected to the upper surface of the supporting plate, a first water tank is fixedly connected to the upper surface of the supporting plate, a second water tank is fixedly connected to the lower surface of the support, a pressing assembly is arranged on the upper surface of the support, and a lock catch is arranged on the upper surface of the second water tank. According to the plastic density measuring device, the hollow pipe, the sliding rod, the filter plate, the compression spring and the pull rod are matched, so that plastic which is not immersed into water can be pressed into the water by the filter plate, the overflow amount of the water is ensured to be the same as the volume of the plastic, then the density of the plastic is calculated according to the weight and the volume of the plastic, and the density measuring accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the field of density meters, in particular to a full-automatic density meter used for measuring the density of plastics. Background Art

[0002] Plastic is a synthetic material composed of high molecular polymers. Plastic has the characteristics of light weight, corrosion resistance, good insulation performance and low cost. Therefore, it is widely used in various industrial fields and daily life, such as packaging materials, building materials, electronic products, medical devices, etc. When plastics are produced and used, density detection is required to determine whether they meet the standards. Therefore, a device for detecting the density of plastics is needed. Plastic densitometer is the most widely used digital density measuring instrument. It is widely used in the field of plastics to measure the density of raw material particles and finished products. Using water as the medium, the density value can be displayed in only two steps. However, the density of plastics is different. Some plastics have a density less than water. When placed in water, they cannot be immersed in water, which easily leads to inaccurate plastic density measurement.

[0003] After searching, Chinese patent announcement number: CN219799118U discloses a density meter for detecting plastic rice, including a density testing body, a test bench, and a flip cover; the test bench is installed on the top of the density testing body, the flip cover is arranged on the top of the test bench, a button is inserted on the top of the test bench, a limit ring is sleeved on the outer wall of the button, the limit ring is fixedly connected to the inside of the test bench, a first spring is sleeved on the outer wall of the button, a fixing rod is slidably connected to the inside of the test bench, a second spring is arranged on the fixing rod and the inside of the test bench, a pushing block is fixedly connected to the bottom of the button, and a connecting block is fixedly connected to the top of the fixing rod. The utility model releases the button, the button is moved upward by the first spring, and the fixing rod is pushed back to its original position by the second spring, and one end of the fixing rod is inserted into the inside of the flip cover to lock and constrain the flip cover to prevent the flip cover from opening when placed, thereby improving the protection of the test bench.

[0004] Although the device has certain improvements, it still cannot completely immerse the plastic with low density in water when measuring the density of plastic, resulting in a certain error in the measurement of the plastic density. Therefore, a fully automatic density meter for measuring the density of plastic is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a fully automatic density meter for measuring plastic density, aiming to improve the problem that when measuring the plastic density, the plastic with low density cannot be completely immersed in water, resulting in a certain error in the plastic density measurement.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fully automatic density meter for measuring the density of plastics, including a measuring instrument, a quick-release assembly is arranged on the upper surface of the measuring instrument, the quick-release assembly includes a support plate, a shift block is penetrated through and slidably connected to the right surface of the support plate, a positioning block is penetrated through and slidably connected to the lower surface of the support plate, a bracket is fixedly connected to the upper surface of the support plate, a water tank 1 is fixedly connected to the upper surface of the support plate, a water tank 2 is fixedly connected to the lower surface of the bracket, a clamping assembly is arranged on the upper surface of the bracket, and a lock is arranged on the upper surface of the water tank 2.

[0007] As a further description of the above technical solution:

[0008] The quick-release assembly also includes a clamping block, a clamping groove is provided on the upper surface of the measuring instrument, and the inner wall of the measuring instrument is elastically connected to the limiting block via a limiting spring.

[0009] As a further description of the above technical solution:

[0010] The clamping assembly includes a top plate, a hollow tube passing through and fixedly connected to the upper surface of the top plate, an inner wall of the hollow tube elastically connected to a slide rod via a compression spring, a filter plate fixedly connected to the lower surface of the slide rod, and a pull rod fixedly connected to the upper surface of the slide rod.

[0011] As a further description of the above technical solution:

[0012] The top plate is rotatably connected to the front surface of the bracket, one end of the compression spring is fixedly connected to the upper surface of the slide rod, the other end of the compression spring is fixedly connected to the inner wall of the top end of the hollow tube, and the slide rod penetrates and is slidably connected to the lower surface of the hollow tube.

[0013] As a further description of the above technical solution:

[0014] A through hole is opened on the upper surface of the filter plate, and the pull rod passes through and is slidably connected to the upper surface of the hollow tube.

[0015] As a further description of the above technical solution:

[0016] The water tank 1 and the water tank 2 are made of glass. The front surface of the water tank 1 is marked with scales. The right surface of the positioning block is fixedly connected to the left surface of the shift block, and the right surface of the shift block protrudes from the right surface of the support plate.

[0017] As a further description of the above technical solution:

[0018] The upper surface of the card block is fixedly connected to the lower surface of the support plate, the card block is arranged in an L shape, the card slot is opened at the right end of the upper surface of the measuring instrument, and the card block is inserted into the inner wall of the card slot.

[0019] As a further description of the above technical solution:

[0020] The limit block is slidably connected to the inner wall of the measuring instrument, one end of the limit spring is fixedly connected to the front surface of the limit block, the other end of the limit spring is fixedly connected to the inner wall of the front side of the measuring instrument, and the upper surface of the limit block is set as an inclined surface.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the cooperation of the hollow tube, the slide rod, the filter plate, the compression spring and the pull rod, the filter plate can press the plastic that is not immersed in water into the water, ensuring that the amount of water overflowing is the same as the volume of the plastic, and then the density of the plastic is calculated according to the weight and volume of the plastic, ensuring the accuracy of the density measurement.

[0023] 2. In the utility model, through the cooperation of the shifting block, the positioning block, the clamping block, the limit block, the limit spring and the clamping slot, the water tank 1 and the water tank 2 can be quickly disassembled and assembled from the measuring instrument when they are damaged or need to be replaced, which facilitates the replacement of the water tank 1 and the water tank 2 and enhances the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0025] Figure 2 It is a top view schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0026] Figure 3 It is a cross-sectional schematic diagram of the three-dimensional structure of the bracket and the top plate in the utility model;

[0027] Figure 4 It is a schematic cross-sectional diagram of the three-dimensional structure of the measuring instrument and the supporting plate in the utility model.

[0028] Legend:

[0029] 1. Measuring instrument; 21. Support plate; 22. Dial block; 23. Positioning block; 24. Card block; 25. Limit block; 26. Limit spring; 201. Card slot; 3. Bracket; 4. Water tank 1; 5. Water tank 2; 61. Top plate; 62. Hollow pipe; 63. Slide rod; 64. Filter plate; 65. Compression spring; 66. Pull rod; 7. Lock. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 , Figure 2 , Figure 4 The utility model provides an embodiment: a fully automatic density meter for determining the density of plastics, including a measuring instrument 1 for measuring the density of plastics, the measuring instrument 1 is composed of a support plate 21, a water tank 1 4, a water tank 2 5, and a bracket 3. The measuring instrument 1 is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. A quick-release assembly is provided on the upper surface of the measuring instrument 1. The quick-release assembly enables the water tank 1 4 and the water tank 2 5 to be quickly disassembled, which is convenient for replacing measuring tools of different models. The quick-release assembly includes a support plate 21, and a dial block 22 is penetrated and slidably connected to the right surface of the support plate 21. The lower surface of the support plate 21 A positioning block 23 is penetrated through the surface and slidably connected, the shift block 22 and the positioning block 23 can move synchronously, the upper surface of the support plate 21 is fixedly connected with a bracket 3, the upper surface of the support plate 21 is fixedly connected with a water tank 1 4, the lower surface of the bracket 3 is fixedly connected with a water tank 2 5, the bracket 3 can provide support for the water tank 2 5, the upper surface of the water tank 2 5 is provided with a clamping assembly, the clamping assembly can make the plastic floating on the water surface immersed in the water, to ensure the accuracy of the measurement data, the upper surface of the bracket 3 is provided with a lock 7, the lock 7 is divided into two parts, one part is fixed on the upper surface of the bracket 3, and the other part is fixed on the upper surface of the top plate 61, which can fix the top plate 61 and the bracket 3.

[0032] Reference Figure 1 , Figure 2 , Figure 4 The quick-release assembly also includes a card block 24 . A card slot 201 is provided on the upper surface of the measuring instrument 1 . The shape and size of the card block 24 match the card slot 201 . The inner wall of the measuring instrument 1 is elastically connected to the limit block 25 via a limit spring 26 .

[0033] Reference Figure 1 - Figure 3The clamping assembly includes a top plate 61, and a hollow tube 62 is penetrated and fixedly connected to the upper surface of the top plate 61. The hollow tube 62 is located at the center of the upper surface of the top plate 61. The inner wall of the hollow tube 62 is elastically connected to a slide rod 63 through a compression spring 65. The lower surface of the slide rod 63 is fixedly connected to a filter plate 64. The initial position of the filter plate 64 is inside the water tank 2 5. When the filter plate 64 is located inside the water tank 2 5, the water inside the water tank 2 5 is full. A pull rod 66 is fixedly connected to the upper surface of the slide rod 63. The top end of the pull rod 66 is set to be convex for easy gripping. The slide rod 63 and the pull rod 66 will move synchronously.

[0034] Reference Figure 1 - Figure 3 The top plate 61 is rotatably connected to the front surface of the bracket 3, one end of the compression spring 65 is fixedly connected to the upper surface of the slide rod 63, and the other end of the compression spring 65 is fixedly connected to the inner wall of the top end of the hollow tube 62. When the slide rod 63 moves upward, it squeezes the compression spring 65 to generate a reaction force. The slide rod 63 penetrates and is slidably connected to the lower surface of the hollow tube 62.

[0035] Reference Figure 1 - Figure 3 The upper surface of the filter plate 64 is provided with through holes, through which water can pass but plastic products cannot pass. When the filter plate 64 moves downward, the plastic products are pressed down. The pull rod 66 penetrates and is slidably connected to the upper surface of the hollow tube 62, sliding longitudinally.

[0036] Reference Figure 1 , Figure 2 , Figure 4 Water tank 1 4 and water tank 2 5 are made of glass and are transparent. The front surface of water tank 1 4 is marked with scales. By observing the scales, the amount of water pressed out can be clearly understood, so that the volume of the plastic product can be calculated. The right surface of the positioning block 23 is fixedly connected to the left surface of the shifting block 22. The shifting block 22 and the positioning block 23 can move synchronously, and the right surface of the shifting block 22 protrudes from the right surface of the support plate 21.

[0037] Reference Figure 1 , Figure 2 , Figure 4 The upper surface of the card block 24 is fixedly connected to the lower surface of the support plate 21. The card block 24 is set to be L-shaped. The card slot 201 is opened at the right end of the upper surface of the measuring instrument 1. The card block 24 is inserted into the inner wall of the card slot 201. When the card block 24 is inserted into the card slot 201, it will squeeze the limit block 25.

[0038] Reference Figure 1 , Figure 2 , Figure 4The limit block 25 is slidably connected to the inner wall of the measuring instrument 1, one end of the limit spring 26 is fixedly connected to the front surface of the limit block 25, and the other end of the limit spring 26 is fixedly connected to the inner wall of the front side of the measuring instrument 1. When the limit block 25 moves forward, it will squeeze the limit spring 26 to generate a reaction force. The upper surface of the limit block 25 is set as an inclined surface. When the upper surface of the limit block 25 is squeezed, the limit block 25 will move forward.

[0039] Working principle: When the device is used, first unlock the lock 7, then pull the pull rod 66 upward to pull the slide bar 63 and the filter plate 64 upward. When the slide bar 63 moves upward, it will squeeze the compression spring 65 to generate a reaction force, then rotate the top plate 61 to open it, and put the plastic whose density needs to be measured into the water tank 2 5, then rotate the top plate 61 in the opposite direction to close it, and lock the lock 7 to prevent the top plate 61 from loosening during use, then release the pull rod 66, the reaction force of the compression spring 65 will push the slide bar 63 and the filter plate 64 downward, the filter plate 64 moving downward will press the plastic floating on the water surface in the water tank 2 5 into the water, the water will pass through the through holes on the filter plate 64 and overflow from the water tank 2 5 into the water tank 1 4, the volume of the plastic can be intuitively understood, and then the density of the plastic can be calculated according to the weight displayed on the measuring instrument 1 and the scale displayed on the water tank 2 5.

[0040] When replacing water tank 2 5 and water tank 1 4 of different models, first press the shift block 22 downward to drive the positioning block 23 to move downward to squeeze the inclined surface of the limit block 25. When the inclined surface of the limit block 25 is squeezed, it will move forward, and the limit block 25 moving forward will be separated from the card block 24, releasing the limit on the card block 24, and then the card block 24 is taken out of the card slot 201, and the support plate 21, water tank 1 4 and water tank 2 5 can be disassembled from the measuring instrument 1, and then the required water tank 1 4 and water tank 2 5 are taken out and the card block is removed. 24 is aligned with the card slot 201 for insertion. During insertion, the card block 24 will squeeze the inclined surface of the limit block 25, and the limit block 25 will move forward to release the obstruction and squeeze the limit spring 26 to generate a reaction force. When the card block 24 and the card slot 201 are inserted, the card block 24 will release the squeezing of the limit block 25. At this time, the reaction force of the limit spring 26 will push the limit block 25 to move backward and insert the card block 24, thereby fixing the support plate 21 on the measuring instrument 1, and completing the replacement of water tank 1 4 and water tank 2 5.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic density meter for measuring the density of plastics, comprising a measuring instrument (1), characterized in that: The upper surface of the measuring instrument (1) is provided with a quick-release assembly, and the quick-release assembly includes a support plate (21), a right surface of the support plate (21) is penetrated by and slidably connected with a shift block (22), a lower surface of the support plate (21) is penetrated by and slidably connected with a positioning block (23), the upper surface of the support plate (21) is fixedly connected with a bracket (3), the upper surface of the support plate (21) is fixedly connected with a water tank 1 (4), the lower surface of the bracket (3) is fixedly connected with a water tank 2 (5), the upper surface of the bracket (3) is provided with a clamping assembly, and the upper surface of the water tank 2 (5) is provided with a lock buckle (7).

2. A fully automatic density meter for measuring plastic density according to claim 1, characterized in that: The quick-release assembly also includes a clamping block (24), a clamping slot (201) is provided on the upper surface of the measuring instrument (1), and the inner wall of the measuring instrument (1) is elastically connected to the limiting block (25) via a limiting spring (26).

3. A fully automatic density meter for measuring plastic density according to claim 1, characterized in that: The clamping assembly includes a top plate (61), the upper surface of the top plate (61) is penetrated by and fixedly connected with a hollow tube (62), the inner wall of the hollow tube (62) is elastically connected with a slide rod (63) via a compression spring (65), the lower surface of the slide rod (63) is fixedly connected with a filter plate (64), and the upper surface of the slide rod (63) is fixedly connected with a pull rod (66).

4. A fully automatic density meter for measuring plastic density according to claim 3, characterized in that: The top plate (61) is rotatably connected to the front surface of the bracket (3), one end of the compression spring (65) is fixedly connected to the upper surface of the sliding rod (63), the other end of the compression spring (65) is fixedly connected to the inner wall of the top end of the hollow tube (62), and the sliding rod (63) passes through and is slidably connected to the lower surface of the hollow tube (62).

5. The fully automatic density meter for measuring the density of plastics according to claim 3, characterized in that: A through hole is provided on the upper surface of the filter plate (64), and the pull rod (66) passes through and is slidably connected to the upper surface of the hollow tube (62).

6. The fully automatic density meter for measuring the density of plastics according to claim 1, characterized in that: The water tank 1 (4) and the water tank 2 (5) are made of glass. The front surface of the water tank 1 (4) is marked with scales. The right surface of the positioning block (23) is fixedly connected to the left surface of the shifting block (22). The right surface of the shifting block (22) protrudes from the right surface of the support plate (21).

7. The fully automatic density meter for measuring the density of plastics according to claim 2, characterized in that: The upper surface of the card block (24) is fixedly connected to the lower surface of the support plate (21); the card block (24) is arranged in an L shape; the card slot (201) is provided at the right end of the upper surface of the measuring instrument (1); and the card block (24) is plugged into the inner wall of the card slot (201).

8. The fully automatic density meter for measuring the density of plastics according to claim 2, characterized in that: The limit block (25) is slidably connected to the inner wall of the measuring instrument (1), one end of the limit spring (26) is fixedly connected to the front surface of the limit block (25), the other end of the limit spring (26) is fixedly connected to the inner wall of the front side of the measuring instrument (1), and the upper surface of the limit block (25) is arranged as an inclined surface.

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