Sand and gravel mud content detection and filtration device

Abstract

This utility model belongs to the technical field of sand and gravel testing equipment, and in particular to a sand and gravel mud content testing and filtration device, including a frame, a primary filtration component, a secondary filtration component, a one-way solenoid valve, a vibration power mechanism, and a flexible corrugated pipe; the primary filtration component includes a horizontally placed filter cylinder and a first elastic sludge scraping component; the secondary filtration component includes a vertically placed filter cylinder, a collection hopper, a filter plate, and a second elastic sludge scraping component; the one-way solenoid valve is fixed to the bottom of the collection hopper; a dual-stage filtration mechanism is adopted, with vibration and sludge scraping acting synchronously, using micro-vibration to break the adhesion of mud and sand, solving the clogging problem; the secondary filtration component uses spiral guide vanes for flow guidance, using the centrifugal force generated by the rotation of water flow to separate fine mud and sand particles from water, and in conjunction with the conical structure of the collection hopper, to achieve directional sedimentation of mud and sand; the one-way solenoid valve achieves leak-free collection of mud slurry, and facilitates quantitative output of mud slurry according to needs, which is beneficial to the accuracy of testing.

Description

Technical Field

[0001] This utility model belongs to the technical field of sand and gravel testing equipment, specifically relating to a sand and gravel mud content detection and filtration device. Background Technology

[0002] The mud content of sand and gravel is one of the core indicators for sand and gravel quality testing in construction projects, and it directly affects the key properties of concrete such as strength and durability.

[0003] Existing sand and gravel mud content detection and filtration devices mainly adopt a single filter screen structure. The sand and gravel are mixed with water manually, poured into the filter screen for filtration, and then the filtered mud is collected and measured to determine the mud content.

[0004] However, the existing device has the following defects that affect filtration efficiency and filtration accuracy: 1. The filter screen is a fixed structure, and during the filtration process, mud and sand easily adhere to the surface of the filter screen to form a mud film, which leads to filter screen blockage. Frequent manual disassembly and cleaning are required, which is cumbersome; 2. The filtration method is static filtration, and fine mud and sand are easily entangled with sand and gravel particles, resulting in incomplete separation and affecting detection accuracy; 3. The collection of filtered mud slurry depends on manual operation, which is prone to spillage.

[0005] To address the aforementioned problems, this utility model proposes a sand and gravel mud content detection and filtration device. Utility Model Content

[0006] To address the aforementioned problems in the existing technology, this utility model provides a sand and gravel mud content detection and filtration device, which is convenient to use, has high filtration efficiency, and is easy to collect.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sand and gravel mud content detection and filtration device, comprising a frame, a primary filtration assembly, a secondary filtration assembly, a one-way solenoid valve, a oscillating power mechanism, and a flexible corrugated pipe;

[0008] The primary filtration assembly is located at the top of the frame and includes a horizontally placed filter cylinder and a first elastic sludge scraping assembly located inside the horizontally placed filter cylinder. The top of the horizontally placed filter cylinder is fixed with a feed hopper and the bottom is fixed with a discharge hopper. Filter holes are provided on the bottom surface of the horizontally placed filter cylinder at the position corresponding to the discharge hopper.

[0009] The secondary filtration assembly is located inside the frame and includes a longitudinally placed filter cylinder, a collection hopper detachably fixed to the bottom of the longitudinally placed filter cylinder, a filter plate located between the longitudinally placed filter cylinder and the collection hopper, and a second elastic sludge scraping assembly located inside the longitudinally placed filter cylinder. The inner wall of the longitudinally placed filter cylinder is fixed with spiral guide vanes.

[0010] The one-way solenoid valve is fixed to the bottom of the collection hopper;

[0011] The two sets of oscillation power mechanisms are symmetrically distributed and located between the frame and the horizontal filter cylinder, and are used to drive the horizontal filter cylinder to perform reciprocating micro-amplitude vibrations in the vertical direction;

[0012] The vertically placed filter cartridge is connected to the feed hopper via a flexible corrugated pipe.

[0013] As a preferred embodiment of this utility model, the first elastic scraping assembly includes a rotating rod, a fixed rod, a first scraper, a first rubber scraper strip, and a first servo motor;

[0014] The rotating rod is rotatably installed inside the horizontally placed filter cylinder;

[0015] Multiple fixed rods are fixed at equal intervals to the outer wall of the rotating rod;

[0016] The first scraper is fixed to the end of the fixed rod away from the rotating rod;

[0017] The first rubber scraper strip is disposed on the outer side wall of the first scraper rod;

[0018] The first servo motor is fixed to one end of the horizontally placed filter cylinder and is used to drive the rotating rod to rotate.

[0019] As a preferred technical solution of this utility model, a first T-shaped insert is fixed on the first scraper, and a first T-shaped slot adapted to the first T-shaped insert is provided on the first rubber scraper.

[0020] As a preferred embodiment of the present invention, the second elastic scraper assembly includes a rotating column, a second scraper rod, a second rubber scraper strip, and a second servo motor.

[0021] The rotating column is rotatably installed inside the longitudinally placed filter cylinder;

[0022] The second scraper is fixed to the bottom end of the rotating column;

[0023] The second rubber scraper is disposed on the bottom surface of the second scraper and is attached to the top surface of the filter plate;

[0024] The second servo motor is fixed to the top of the vertically placed filter cylinder and is used to drive the rotating column to rotate.

[0025] As a preferred embodiment of the present invention, a second T-shaped insert is fixed on the second scraper, and a second T-shaped slot adapted to the second T-shaped insert is provided on the second rubber scraper.

[0026] As a preferred embodiment of this utility model, the oscillation power mechanism includes a vibration motor, a support plate, a guide column, a limiting plate, and a balance spring;

[0027] The vibration motor is fixed to the bottom surface of the horizontally placed filter cylinder;

[0028] The support plate is fixed to the top of the frame;

[0029] The guide column is fixed to the bottom surface of the horizontally placed filter cartridge and passes through the support plate;

[0030] The limiting plate is fixed to the bottom end of the guide column;

[0031] Balance springs sleeved on the guide columns are distributed between the support plate and the horizontally placed filter cylinder, and between the support plate and the limiting plate.

[0032] As a preferred technical solution of this utility model, it also includes an inspection door, a positioning screw, and a wing nut;

[0033] An inspection port is provided at one end of the horizontally placed filter cartridge, and the inspection door is hinged to the end face of the horizontally placed filter cartridge at the position corresponding to the inspection port. A handle is fixed on the outer wall of the inspection door.

[0034] The positioning screw is fixed to the end face of the inspection port, and a positioning notch is provided on the inspection door for the positioning screw to pass through;

[0035] The wing nut is attached to the protruding end of the positioning screw by means of thread engagement.

[0036] As a preferred embodiment of this utility model, a rubber sealing frame is glued and fixed to one side of the inspection door facing the horizontally placed filter cartridge.

[0037] In a preferred embodiment of this utility model, the longitudinally placed filter cylinder is connected to the collection hopper using a flange, the one-way solenoid valve is fixed to the bottom of the collection hopper using a flange, and the flexible bellows is connected to the discharge hopper and the longitudinally placed filter cylinder using flanges respectively.

[0038] Compared with the prior art, the beneficial effects of this utility model are:

[0039] 1. It adopts a two-stage filtration mechanism, with vibration and sludge scraping moving synchronously. The slight vibration breaks down the adhesion of the mud and sand, thus solving the clogging problem.

[0040] 2. The secondary filtration component uses spiral guide vanes to guide the flow, and uses the centrifugal force generated by the rotation of the water flow to separate fine particles of silt from the water. Combined with the conical structure of the collection hopper, it realizes the directional sedimentation of silt, and solves the problem of incomplete separation in traditional static filtration.

[0041] 3. The one-way solenoid valve enables spill-free mud collection and facilitates quantitative mud output as needed, which is beneficial for accurate testing.

[0042] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0043] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0044] Figure 1 This is a schematic diagram of the structure of this utility model;

[0045] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0046] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure of the oscillation dynamic mechanism in the diagram;

[0047] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the diagram;

[0048] Figure 5 This utility model Figure 2 Enlarged structural diagram at point B in the diagram;

[0049] Figure 6 This utility model Figure 2 A magnified structural diagram at point C in the diagram.

[0050] In the diagram: 1. Frame; 2. Primary filtration assembly; 21. Horizontal filter cartridge; 211. Feed hopper; 212. Discharge hopper; 213. Filter holes; 214. Inspection port; 22. First elastic scraper assembly; 221. Rotating rod; 222. Fixed rod; 223. First scraper; 2231. First T-shaped insert; 224. First rubber scraper; 2241. First T-shaped slot; 225. First servo motor; 3. Secondary filtration assembly; 31. Vertical filter cartridge; 311. Spiral guide vanes; 32. Collection hopper; 33. Filter plate; 34. Second elastic scraper assembly; 341. Rotating column; 342. Second scraper bar; 3421. Second T-shaped insert; 343. Second rubber scraper strip; 3431. Second T-shaped slot; 344. Second servo motor; 4. One-way solenoid valve; 5. Vibration power mechanism; 51. Vibration motor; 52. Support plate; 53. Guide column; 54. Limiting plate; 55. Balance spring; 6. Flexible bellows; 7. Inspection door; 71. Positioning notch; 72. Rubber sealing frame; 73. Handle; 8. Positioning screw; 9. Wing nut. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0052] Please see Figures 1-6 The present invention provides the following technical solution: a sand and gravel mud content detection and filtration device, including a frame 1, a primary filter component 2, a secondary filter component 3, a one-way solenoid valve 4, an oscillation power mechanism 5, and a flexible corrugated pipe 6.

[0053] Furthermore, by Figure 1 , Figure 2 As shown, in this embodiment, the primary filtration assembly 2 is located at the top of the frame 1, and includes a horizontal filter cylinder 21 and a first elastic sludge scraping assembly 22 located inside the horizontal filter cylinder 21. The top of the horizontal filter cylinder 21 is fixed with a feed hopper 211 and the bottom is fixed with a discharge hopper 212. Filter holes 213 (with a hole diameter of 0.075 mm, which meets the mud content detection standard) are opened on the bottom surface of the horizontal filter cylinder 21 at the position corresponding to the discharge hopper 212. The secondary filtration assembly 3 is located inside the frame 1, and includes a longitudinal filter cylinder 31, a collection hopper 32 detachably fixed to the bottom of the longitudinal filter cylinder 31, a filter plate 33 (with a hole diameter of 0.05 mm) located between the longitudinal filter cylinder 31 and the collection hopper 32, and a second elastic sludge scraping assembly 34 located inside the longitudinal filter cylinder 31. Spiral guide vanes 311 are fixed on the inner wall of the longitudinal filter cylinder 31. One-way solenoid valve 4 is fixed to the bottom of collection hopper 32; two sets of oscillating power mechanisms 5 are symmetrically distributed and located between frame 1 and horizontal filter cylinder 21, used to drive horizontal filter cylinder 21 to perform reciprocating micro-vibration in the vertical direction (vibration frequency 10-15Hz, amplitude 2-3mm); vertical filter cylinder 31 is connected to feed hopper 212 by flexible corrugated pipe 6. After adopting the above scheme, when using, the sand and gravel sample to be tested is put into horizontal filter cylinder 21 through feed hopper 211 of primary filter component 2 according to the standard sampling amount (e.g., 500g), and at the same time, the two sets of symmetrically distributed oscillating power mechanisms 5 are started. The oscillating power mechanisms 5 drive horizontal filter cylinder 21 to perform reciprocating micro-vibration in the vertical direction according to preset parameters, so that the sand and gravel sample put in is quickly dispersed in horizontal filter cylinder 21, avoiding the filtration blind zone caused by particle agglomeration.

[0054] During the vibration of the horizontal filter cylinder 21, the filter holes 213 on its bottom surface perform initial classification of the sand and gravel samples: mud particles with a particle size of less than 0.075 mm and a small amount of fine sand fall into the feed hopper 212 through the filter holes 213, while the main sand and gravel particles with a particle size of more than 0.075 mm remain in the horizontal filter cylinder 21; at the same time, the first elastic mud scraper component 22 inside the horizontal filter cylinder 21 works, continuously adhering to the inner wall of the horizontal filter cylinder 21 and the edge of the filter holes 213, removing the attached mud clumps and fine sand, and avoiding the clogging of the filter holes 213, which would lead to a decrease in filtration efficiency.

[0055] The mud-fine sand mixture after primary filtration enters the flexible corrugated pipe 6 through the feed hopper 212. Since the horizontal filter cylinder 21 is in a vibrating state, the flexible corrugated pipe 6 can compensate for the vibration displacement of the horizontal filter cylinder 21 through its own elastic deformation. This avoids wear of components caused by rigid connection and ensures that the material is transported to the vertical filter cylinder 31 of the secondary filtration component 3 without leakage or retention, thus maintaining the continuity of material flow.

[0056] After the material enters the longitudinal filter cylinder 31, it flows downward under the action of gravity. At the same time, it is guided by the spiral guide vanes 311 on the inner wall of the longitudinal filter cylinder 31 to move along the spiral path. The spiral guide vanes 311 can prolong the residence time of the material in the longitudinal filter cylinder 31, so that the material can fully contact the filter plate 33 at the bottom of the longitudinal filter cylinder 31 and achieve secondary classification: pure mud particles with a particle size of less than 0.05mm (the core object of mud content detection) fall into the collection hopper 32 through the filter plate 33, while fine sand particles with a particle size between 0.05-0.075mm are retained in the longitudinal filter cylinder 31. During this process, the second elastic sludge scraping component 34 in the longitudinal filter cylinder 31 works to continuously scrape the upper surface of the filter plate 33, avoid particle accumulation and blockage of the filter plate 33, and ensure the accuracy and flow rate stability of the secondary filtration.

[0057] Pure mud particles filtered through the secondary filtration are temporarily stored in the collection hopper 32. After the filtration of a single test sample is completed, the one-way solenoid valve 4 is energized and opened, and the mud particles in the collection hopper 32 are discharged into the test container (such as a weighing dish) through the channel of the one-way solenoid valve 4 for subsequent drying, weighing and other mud content calculation steps. After the test is completed, the one-way solenoid valve 4 is closed to prevent external impurities from entering the collection hopper 32 and contaminating the next test sample, so as to realize the recycling of the device.

[0058] Optionally, by Figure 1 and Figure 2As shown, in this embodiment, the first elastic sludge scraping assembly 22 includes a rotating rod 221, a fixed rod 222, a first scraper rod 223, a first rubber scraper strip 224, and a first servo motor 225; the rotating rod 221 is rotatably mounted inside the horizontal filter cylinder 21; multiple fixed rods 222 are equally spaced and fixed to the outer wall of the rotating rod 221; the first scraper rod 223 is fixed to the end of the fixed rod 222 away from the rotating rod 221; the first rubber scraper strip 224 is disposed on the outer wall of the first scraper rod 223; and the first servo motor 225 is fixed to the horizontal filter cylinder. One end of 21 is used to drive the rotating rod 221 to rotate. After adopting the above scheme, when in use, the first elastic sludge scraping assembly 22 is started synchronously during the vibration filtration process of the horizontal filter cylinder 21: the first servo motor 225 drives the rotating rod 221 to rotate in the horizontal filter cylinder 21 at a preset speed (such as 5-10 r / min). The rotating rod 221 drives multiple fixed rods 222 that are fixed at equal intervals on the outer wall to move synchronously in the circumferential direction, thereby causing the first scraper 223 fixed at the end of the fixed rod 222 to sweep circumferentially along the inner wall of the horizontal filter cylinder 21.

[0059] Because the outer wall of the first scraper 223 is provided with a first rubber scraper 224, which has good elastic deformation capability, it can adaptively fit the inner wall of the horizontal filter cylinder 21 and the edge of the bottom filter hole 213 with the vertical slight vibration of the horizontal filter cylinder 21 during the scraping process. When the horizontal filter cylinder 21 vibrates and produces a slight displacement, the first rubber scraper 224 maintains close contact through its own elastic compression or extension, which not only avoids rigid scraping from causing wear to the filter hole 213, but also efficiently removes mud, fine sand clumps and blockages on the inner wall and the edge of the filter hole 213, ensuring that the filter hole 213 always remains unobstructed.

[0060] Preferably, by Figure 1 , Figure 2 and Figure 4 As shown in this embodiment, a first T-shaped insert 2231 is fixed on the first scraper 223, and a first T-shaped slot 2241 adapted to the first T-shaped insert 2231 is provided on the first rubber scraper 224. With the above solution, when in use, the tenon and mortise fit of the T-shaped structure can form a double limit in the axial and radial directions, which can effectively resist the centrifugal force generated by the first rubber scraper 224 when it rotates with the first scraper 223, as well as the high-frequency impact caused by the vibration of the horizontal filter cylinder 21. This prevents the first rubber scraper 224 from loosening or falling off during long-term sludge scraping operations, ensures the continuous and stable sludge scraping action, and guarantees the cleaning effect of the filter hole 213.

[0061] When the first rubber scraper 224 ages and wears due to long-term friction with the inner wall of the horizontal filter cylinder 21 and the edge of the filter hole 213, the old first rubber scraper 224 can be removed and the new first rubber scraper 224 can be installed without the need for tools, simply by inserting and pulling. This simplifies the replacement process, shortens maintenance downtime, and reduces the operation and maintenance costs of the equipment.

[0062] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the second elastic scraper assembly 34 includes a rotating column 341, a second scraper 342, a second rubber scraper strip 343, and a second servo motor 344. The rotating column 341 is rotatably installed inside the longitudinal filter cylinder 31. The second scraper 342 is fixed to the bottom end of the rotating column 341. The second rubber scraper strip 343 is disposed on the bottom surface of the second scraper 342 and adheres to the top surface of the filter plate 33. The second servo motor 344 is fixed to the top end of the longitudinal filter cylinder 31 and is used to drive the rotating column 341 to rotate. With the above scheme, during use, the second elastic scraper assembly 34 operates synchronously in the secondary filtration process: the second servo motor 344 drives the rotating column 341 to rotate in the longitudinal filter cylinder 31 at an appropriate speed (such as 3-8 r / min), and the rotating column 341 drives the second scraper 342 fixed at the bottom end to make a synchronous circular motion, so that the second rubber scraper strip 343 on the bottom surface of the second scraper 342 adheres to and rotates along the top surface of the filter plate 33.

[0063] Because the second rubber scraper 343 has elastic deformation characteristics, it can closely adhere to the surface of the filter plate 33 (including the edge of the filter holes on the filter plate 33) during rotation, and remove the fine sand particles accumulated on the surface of the filter plate 33 by flexible scraping, avoiding damage to the filter plate 33 by rigid contact, and ensuring that the filter plate 33 always remains in a transparent state.

[0064] Preferably, by Figure 1 , Figure 2 and Figure 5 As shown in this embodiment, a second T-shaped insert 3421 is fixed on the second scraper 342, and a second T-shaped slot 3431 adapted to the second T-shaped insert 3421 is provided on the second rubber scraper 343. With the above solution, during use, the axial and radial double limiting formed by the T-shaped structure can effectively resist the centrifugal force generated by the second rubber scraper 343 when it rotates with the second scraper 342, as well as the material reaction force when it contacts and scrapes the top surface of the filter plate 33. This avoids loosening or falling off during high-frequency rotation and sludge scraping, ensuring continuous cleaning of the surface of the filter plate 33 and the edge of the filter holes, and ensuring the precision of secondary filtration.

[0065] The T-shaped insertion structure allows for the insertion and removal of the second rubber scraper 343 without tools, enabling rapid replacement of consumable parts, significantly shortening the maintenance cycle, reducing the loss of testing efficiency due to downtime maintenance, and reducing the risk of accidental damage to the filter plate 33.

[0066] Optionally, by Figures 1-3As shown, in this embodiment, the oscillation power mechanism 5 includes a vibration motor 51, a support plate 52, a guide column 53, a limiting plate 54, and a balance spring 55. The vibration motor 51 is fixed to the bottom surface of the horizontal filter cylinder 21; the support plate 52 is fixed to the top of the frame 1; the guide column 53 is fixed to the bottom surface of the horizontal filter cylinder 21 and passes through the support plate 52; the limiting plate 54 is fixed to the bottom end of the guide column 53; balance springs 55 sleeved on the guide column 53 are distributed between the support plate 52 and the horizontal filter cylinder 21, and between the support plate 52 and the limiting plate 54. After implementing the above scheme, when using the system, after starting the vibration motor 51, the vibration force it outputs is directly transmitted to the bottom surface of the horizontal filter cartridge 21, driving the horizontal filter cartridge 21 to generate a vertical vibration tendency. Since the guide column 53 is fixed to the bottom surface of the horizontal filter cartridge 21 and passes through the support plate 52 at the top of the frame 1, the guide column 53 slides vertically under the limiting action of the support plate 52, thereby strictly limiting the vibration of the horizontal filter cartridge 21 to the vertical dimension, avoiding horizontal deviation, and ensuring that the vibration energy is concentrated on the dispersion and filtration of the sand and gravel sample.

[0067] Meanwhile, the two sets of balance springs 55 sleeved on the guide column 53 extend and retract synchronously with the vibration of the horizontal filter cylinder 21: when the horizontal filter cylinder 21 vibrates upward, the upper balance spring 55 is compressed and generates a downward restoring force, and the lower balance spring 55 is stretched and generates an upward pulling force; when the horizontal filter cylinder 21 vibrates downward, the lower balance spring 55 is compressed and generates an upward restoring force, and the upper balance spring 55 is stretched and generates a downward pulling force. The synergistic effect of the two sets of balance springs 55 can buffer the vibration impact, stabilize the vibration amplitude of the horizontal filter cylinder 21 within the preset range (2-3mm), and maintain the vibration frequency in the high-efficiency range of 10-15Hz.

[0068] In addition, the limiting plate 54 at the bottom of the guide column 53 can further limit the maximum downward displacement of the horizontal filter cartridge 21 by contacting the lower balance spring 55 and the support plate 52, so as to avoid the horizontal filter cartridge 21 from rigidly colliding with the frame 1 or other components due to excessive vibration amplitude, thus ensuring the safety of the device operation.

[0069] Optionally, by Figure 1 , Figure 2 and Figure 6As shown, this embodiment also includes an inspection door 7, a positioning screw 8, and a wing nut 9; one end of the horizontal filter cylinder 21 has an inspection port 214, and the inspection door 7 is hinged to the end face of the horizontal filter cylinder 21 corresponding to the inspection port 214. A handle 73 is fixed to the outer wall of the inspection door 7; the positioning screw 8 is fixed to the end face of the inspection port 214, and a positioning notch 71 is provided on the inspection door 7 for the positioning screw 8 to pass through; the wing nut 9 is provided at the protruding end of the positioning screw 8 by thread engagement. With the above scheme, during use, when the device is running normally, the inspection door 7 is in the closed state: the inspection door 7 is rotated around the hinge axis to fit the horizontal filter cylinder 21 by the handle 73. The inspection port 214 end face is aligned with the positioning notch 71 on the inspection door 7 and the positioning screw 8 on the inspection port 214 end face is fitted into it. At this time, the positioning screw 8 passes through the positioning notch 71 and extends out of the outside of the inspection door 7. Then, the wing nut 9 is manually tightened, so that it moves along the thread of the positioning screw 8 toward the inspection door 7 until the wing nut 9 tightly presses against the outer wall of the inspection door 7. The thread locking force firmly presses the inspection door 7 onto the inspection port 214 end face, forming a sealed fit. This prevents sand or mud particles inside the horizontal filter cartridge 21 from leaking from the inspection port 214 during vibration, and also resists the impact force generated by the vibration of the horizontal filter cartridge 21, preventing the inspection door 7 from opening accidentally.

[0070] When it is necessary to inspect the inside of the horizontal filter cartridge 21 (such as cleaning residual sand and gravel, replacing the first rubber scraper 224 of the first elastic scraper assembly 22, checking the blockage of the filter holes 213, etc.), loosen the wing nut 9 in the opposite direction to separate it from the inspection door 7. Pull the inspection door 7 outward around the hinge axis by the handle 73. The positioning notch 71 will be released from the restriction of the positioning screw 8 as the inspection door 7 rotates, and the inspection port 214 can be fully opened, making it convenient for operators to directly access the internal components of the horizontal filter cartridge 21 for maintenance.

[0071] Preferably, by Figure 1 , Figure 2 and Figure 6 As shown in this embodiment, a rubber sealing frame 72 is bonded and fixed to the side of the inspection door 7 facing the horizontal filter cylinder 21. With the above solution, the rubber sealing frame 72 has good elastic deformation ability during use. When the inspection door 7 is locked by the wing nut 9, it will be tightly squeezed between the inspection door 7 and the end face of the inspection port 214 of the horizontal filter cylinder 21. By compressing itself to fill the tiny gap between the two, it can effectively prevent mud particles and fine sand with a particle size of less than 0.075mm from leaking from the inspection port 214 inside the horizontal filter cylinder 21. This avoids the deviation of mud content detection results caused by sample loss and prevents particles from overflowing and polluting the surrounding environment of the equipment, ensuring the accuracy of the test data and the cleanliness of the operating environment.

[0072] Preferably, by Figure 1 and Figure 2As shown in this embodiment, the longitudinal filter cartridge 31 and the collection hopper 32 are connected by a flange, the one-way solenoid valve 4 is fixed to the bottom of the collection hopper 32 by a flange, and the flexible bellows 6 is connected to the feed hopper 212 and the longitudinal filter cartridge 31 by flanges respectively. With the above scheme, when in use, the flange connection is tightened by bolts to make the connection surface fit tightly, so as to avoid the deviation of the test results due to material loss.

[0073] The flange connection allows for quick separation of components by removing the bolts, greatly simplifying the maintenance process. For example, when it is necessary to clean the residual mud particles in the collection hopper 32, the flange bolts of the vertical filter cylinder 31 and the collection hopper 32 can be loosened to quickly separate them.

[0074] It should be noted that the first servo motor 225, the second servo motor 344, the one-way solenoid valve 4, and the vibration motor 51 are all commercially available conventional devices with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0075] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0076] Components not described in detail in this article are existing technologies.

[0077] The working principle and usage process of this utility model: When using the sand and gravel mud content detection and filtration device of this utility model, the sand and gravel sample to be tested is put into the horizontal filter cylinder 21 through the feeding hopper 211 of the first-stage filtration component 2 according to the standard sampling amount (such as 500g). At the same time, two sets of symmetrically distributed oscillating power mechanisms 5 are started. The oscillating power mechanisms 5 drive the horizontal filter cylinder 21 to perform reciprocating micro-amplitude vibration in the vertical direction according to the preset parameters, so that the sand and gravel sample put in is quickly dispersed in the horizontal filter cylinder 21, avoiding the filtration blind zone caused by particle agglomeration.

[0078] During the vibration of the horizontal filter cylinder 21, the filter holes 213 on its bottom surface perform initial classification of the sand and gravel samples: mud particles with a particle size of less than 0.075 mm and a small amount of fine sand fall into the feed hopper 212 through the filter holes 213, while the main sand and gravel particles with a particle size of more than 0.075 mm remain in the horizontal filter cylinder 21; at the same time, the first elastic mud scraper component 22 inside the horizontal filter cylinder 21 works, continuously adhering to the inner wall of the horizontal filter cylinder 21 and the edge of the filter holes 213, removing the attached mud clumps and fine sand, and avoiding the clogging of the filter holes 213, which would lead to a decrease in filtration efficiency;

[0079] The mud-fine sand mixture after primary filtration enters the flexible corrugated pipe 6 through the feed hopper 212. Since the horizontal filter cylinder 21 is in a vibrating state, the flexible corrugated pipe 6 can compensate for the vibration displacement of the horizontal filter cylinder 21 through its own elastic deformation. This avoids component wear caused by rigid connection and ensures that the material is transported to the vertical filter cylinder 31 of the secondary filtration component 3 without leakage or retention, maintaining the continuity of material flow.

[0080] After the material enters the longitudinal filter cylinder 31, it flows downward under the action of gravity. At the same time, it is guided by the spiral guide vanes 311 on the inner wall of the longitudinal filter cylinder 31 to move along the spiral path. The spiral guide vanes 311 can prolong the residence time of the material in the longitudinal filter cylinder 31, so that the material can fully contact the filter plate 33 at the bottom of the longitudinal filter cylinder 31 and achieve secondary classification: pure mud particles with a particle size of less than 0.05mm (the core object of mud content detection) fall into the collection hopper 32 through the filter plate 33, while fine sand particles with a particle size between 0.05-0.075mm are retained in the longitudinal filter cylinder 31. During this process, the second elastic sludge scraping component 34 in the longitudinal filter cylinder 31 works to continuously scrape the upper surface of the filter plate 33, avoid particle accumulation and blockage of the filter plate 33, and ensure the accuracy and flow rate stability of the secondary filtration.

[0081] Pure mud particles that have passed through the secondary filtration are temporarily stored in the collection hopper 32. After the filtration of a single test sample is completed, the one-way solenoid valve 4 is energized and opened. The mud particles in the collection hopper 32 are discharged into the test container (such as a weighing dish) through the channel of the one-way solenoid valve 4 for subsequent drying, weighing and other mud content calculation steps.

[0082] After the test is completed, the one-way solenoid valve 4 is closed to prevent external impurities from entering the collection hopper 32 and contaminating the sample for the next test, thus realizing the recycling of the device.

[0083] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sand and gravel mud content detection and filtration device, characterized in that, It includes a frame (1), a primary filter assembly (2), a secondary filter assembly (3), a one-way solenoid valve (4), an oscillating power mechanism (5), and a flexible bellows (6). The primary filtration assembly (2) is located at the top of the frame (1). It includes a horizontal filter cylinder (21) and a first elastic sludge scraping assembly (22) located inside the horizontal filter cylinder (21). The top of the horizontal filter cylinder (21) is fixed with a feed hopper (211) and the bottom is fixed with a feed hopper (212). Filter holes (213) are provided on the bottom surface of the horizontal filter cylinder (21) at the position corresponding to the feed hopper (212). The secondary filtration assembly (3) is located inside the frame (1) and includes a longitudinally placed filter cylinder (31), a collection hopper (32) detachably fixed to the bottom of the longitudinally placed filter cylinder (31), a filter plate (33) located between the longitudinally placed filter cylinder (31) and the collection hopper (32), and a second elastic sludge scraping assembly (34) located inside the longitudinally placed filter cylinder (31). The inner wall of the longitudinally placed filter cylinder (31) is fixed with a spiral guide vane (311). The one-way solenoid valve (4) is fixed to the bottom of the collection hopper (32); The two sets of oscillation power mechanisms (5) are symmetrically distributed and located between the frame (1) and the horizontal filter cylinder (21) to drive the horizontal filter cylinder (21) to reciprocate in a micro-amplitude manner in the vertical direction; The vertically placed filter cartridge (31) is connected to the feed hopper (212) via a flexible corrugated pipe (6).

2. The sand and gravel mud content detection and filtration device according to claim 1, characterized in that: The first elastic scraper assembly (22) includes a rotating rod (221), a fixed rod (222), a first scraper rod (223), a first rubber scraper strip (224), and a first servo motor (225). The rotating rod (221) is rotatably installed inside the horizontally placed filter cylinder (21); Multiple fixed rods (222) are fixed at equal intervals to the outer wall of the rotating rod (221); The first scraper (223) is fixed to the end of the fixed rod (222) away from the rotating rod (221); The first rubber scraper strip (224) is disposed on the outer side wall of the first scraper rod (223); The first servo motor (225) is fixed to one end of the horizontal filter cylinder (21) and is used to drive the rotating rod (221) to rotate.

3. The sand and gravel mud content detection and filtration device according to claim 2, characterized in that: The first scraper (223) is fixed with a first T-shaped insert (2231), and the first rubber scraper (224) is provided with a first T-shaped slot (2241) that is compatible with the first T-shaped insert (2231).

4. The sand and gravel mud content detection and filtration device according to claim 1, characterized in that: The second elastic scraper assembly (34) includes a rotating column (341), a second scraper bar (342), a second rubber scraper (343), and a second servo motor (344). The rotating column (341) is rotatably installed inside the longitudinally placed filter cylinder (31); The second scraper (342) is fixed to the bottom end of the rotating column (341); The second rubber scraper (343) is disposed on the bottom surface of the second scraper (342) and adheres to the top surface of the filter plate (33); The second servo motor (344) is fixed to the top of the vertically placed filter cylinder (31) and is used to drive the rotating column (341) to rotate.

5. The sand and gravel mud content detection and filtration device according to claim 4, characterized in that: The second scraper (342) is fixed with a second T-shaped insert (3421), and the second rubber scraper (343) is provided with a second T-shaped slot (3431) that is compatible with the second T-shaped insert (3421).

6. The sand and gravel mud content detection and filtration device according to claim 1, characterized in that: The oscillation power mechanism (5) includes a vibration motor (51), a support plate (52), a guide column (53), a limiting plate (54), and a balance spring (55). The vibration motor (51) is fixed to the bottom surface of the horizontally placed filter cylinder (21); The support plate (52) is fixed to the top of the frame (1); The guide post (53) is fixed to the bottom surface of the horizontal filter cylinder (21) and passes through the support plate (52); The limiting plate (54) is fixed to the bottom end of the guide post (53); Balance springs (55) sleeved on the guide post (53) are distributed between the support plate (52) and the horizontal filter cylinder (21), and between the support plate (52) and the limiting plate (54).

7. The sand and gravel mud content detection and filtration device according to claim 1, characterized in that: It also includes an inspection door (7), a positioning screw (8), and a wing nut (9); One end of the horizontal filter cartridge (21) is provided with an inspection port (214), and the inspection door (7) is hinged to the end face of the horizontal filter cartridge (21) corresponding to the inspection port (214). A handle (73) is fixed on the outer wall of the inspection door (7). The positioning screw (8) is fixed to the end face of the inspection port (214), and a positioning notch (71) is provided on the inspection door (7) for the positioning screw (8) to pass through. The wing nut (9) is attached to the protruding end of the positioning screw (8) by means of thread engagement.

8. The sand and gravel mud content detection and filtration device according to claim 7, characterized in that: The inspection door (7) has a rubber sealing frame (72) glued and fixed on one side facing the horizontal filter cartridge (21).

9. The sand and gravel mud content detection and filtration device according to claim 1, characterized in that: The vertically placed filter cartridge (31) is connected to the collection hopper (32) by a flange, the one-way solenoid valve (4) is fixed to the bottom of the collection hopper (32) by a flange, and the flexible bellows (6) is connected to the feed hopper (212) and the vertically placed filter cartridge (31) by flanges respectively.

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