A digestion device for water quality monitoring

Abstract

The utility model relates to water quality monitoring equipment technical field discloses a kind of digestion device for water quality monitoring, including frame support assembly, its internal cavity contains glass heating chamber, glass heating chamber both ends are sealedly connected with frame support assembly by sealing assembly;The upper seal cover and lower seal cover of sealing assembly are equipped with radial sealing groove, glass heating chamber both ends are embedded therein, and radial sealing is formed with the gap between glass heating chamber outer wall by sealing element, the device further includes pressure control assembly, and its first, second valve assembly is respectively communicated with upper and lower seal cover by flow path, so that direct connection path is formed between the three;The utility model provides accommodating space by frame support assembly, to solve the problem that existing axial sealing is high to assembly precision requirement, prone to leakage with radial sealing mode, while directly designed to avoid the problem that traditional pipeline connection leads to flow path too long, liquid remains more.

Description

Technical Field

[0001] This utility model relates to the field of water quality monitoring equipment technology, and specifically to a digestion device for water quality monitoring. Background Technology

[0002] In water quality monitoring, pressure digestion devices are key equipment for achieving efficient sample digestion. Their structural rationality directly affects digestion efficiency, monitoring data accuracy, and usage and maintenance costs. Currently, pressure digestion devices in the industry mainly fall into two common structural categories: one is a conventional structure composed of a high-pressure valve, connecting pipelines, a machined frame, a glass tube, and end-face seals. This structure achieves sealing by applying axial pressure, which is not only complex to assemble, but also requires extremely high precision in axial assembly dimensions and pressure control. Even slight deviations in axial dimension control can lead to liquid leakage. Furthermore, component replacement, cleaning, and maintenance are difficult, and the machined frame and high-precision assembly requirements result in high overall costs. Simultaneously, because the components are connected by pipelines, the overall flow path is long, leaving a significant amount of liquid residue at the bottom of the device. This residual liquid cannot be fully heated and digested, directly causing deviations in test data and affecting the accuracy of monitoring results. Another type is the industry-customized structure, which often combines a machined frame with a custom-designed, integrated high-pressure valve with sealing function. Although it has targeted designs for some performance aspects, it still has significant drawbacks: the customized components and machined frame significantly increase manufacturing costs, and the supply channels for customized high-pressure valves are limited to specific suppliers. Replacement or maintenance is not only difficult but may also disrupt normal equipment operation due to supply constraints. Therefore, existing pressure relief devices require improvement in sealing reliability, ease of maintenance, cost control, and the accuracy of monitoring data. A new type of pressure relief device that can solve these problems is urgently needed. Utility Model Content

[0003] The purpose of this invention is to provide a digestion device for water quality monitoring. The device provides stable support by using a frame support assembly. The upper and lower sealing covers are embedded in radial sealing grooves at both ends of the glass heating chamber and a radial seal is formed by sealing elements. This solves the problems of high assembly precision requirements and easy leakage of existing axial seals. At the same time, the pressure control assembly is connected to the upper and lower sealing covers through adapters to form a short flow path structure, avoiding the problems of excessively long flow paths and excessive liquid residue caused by pipeline connections in traditional structures.

[0004] This utility model is achieved through the following technical solution: A digestion device for water quality monitoring, comprising: A frame support assembly has an internal cavity for accommodating a glass heating chamber, the two ends of which are sealed to the frame support assembly via a sealing assembly. The sealing assembly includes an upper sealing cover and a lower sealing cover. The two ends of the glass heating chamber are respectively embedded in the radial sealing grooves of the upper sealing cover and the lower sealing cover, and a radial seal is formed between the sealing element and the outer wall of the glass heating chamber. The pressure control assembly includes a first valve assembly and a second valve assembly, which are respectively connected to the upper sealing cover and the lower sealing cover through flow paths, so that the first valve assembly, the glass heating chamber and the second valve assembly form a direct connection path.

[0005] In this solution, a frame support assembly provides space for the glass heating chamber. The sealing assembly uses radial sealing grooves embedded at both ends of the glass heating chamber to form a radial seal with the sealing element, which solves the problems of high assembly precision requirements and easy leakage of existing axial seals. At the same time, the pressure control assembly is directly connected to the sealing cover to form a direct flow path, thereby forming a short flow path between the first valve assembly, the glass heating chamber and the second valve assembly, avoiding the problems of excessively long flow paths and excessive liquid residue caused by pipeline connections in traditional structures.

[0006] Furthermore, the frame support assembly includes a rear cover plate, a front cover plate, a first side plate, and a second side plate; The rear cover plate is arranged parallel to the front cover plate. The first side plate and the second side plate are respectively vertically connected to the two sides of the rear cover plate and the front cover plate, forming a cavity to accommodate the glass heating chamber and the sealing assembly. This ensures that these components can maintain a relatively fixed positional relationship under high-pressure digestion environment, avoiding the impact of structural loosening on the sealing effect and flow path stability.

[0007] Furthermore, the frame support assembly also includes an elastic limiting member, and a floating groove is formed between the outer peripheral wall of the upper sealing cover and the inner wall surface of the cavity; The elastic limiting member is located on the side of the rear cover plate facing the cavity, and the end of the elastic limiting member is engaged with the floating groove. This effectively restricts the displacement of the sealing assembly within the frame support assembly, ensuring that there is no relative movement between the sealing assembly and the frame support assembly. This prevents the sealing assembly from shifting position due to vibration, pressure changes, etc., during high-pressure dissipation or operation, thereby preventing gaps from appearing between the glass heating chamber and the radial sealing structure of the sealing assembly, which would affect the sealing effect.

[0008] Furthermore, to further improve the sealing effect, the sealing assembly includes at least one third sealing element and at least one fourth sealing element; the third sealing element is embedded in the inner wall of the radial sealing groove of the upper sealing cover, and the fourth sealing element is embedded in the inner wall of the radial sealing groove of the lower sealing cover, and the third sealing element and the fourth sealing element are respectively tightly fitted to the outer walls at both ends of the glass heating chamber to form a seal.

[0009] Furthermore, the first valve assembly includes a first high-pressure valve, a first high-pressure valve bracket, and a first adapter. One end of the first adapter is connected to the flow path interface of the upper sealing cap, and the other end is connected to the first high-pressure valve. One end of the first high-pressure valve bracket is fixed to the frame support assembly, and the other end of the first high-pressure valve bracket is fixed to the first high-pressure valve. This avoids the problem of flow path extension caused by additional pipelines. Furthermore, the fixing effect of the high-pressure valve bracket ensures that the first high-pressure valve will not be displaced due to pressure or vibration under high-pressure dissipation environment, thereby ensuring the sealing of the connection between the adapter and the upper sealing cap.

[0010] Furthermore, to further improve the sealing effect, the first valve assembly also includes a first seal and a second seal; The first seal is disposed in the connection gap between the first adapter and the first high-pressure valve, and the second seal is disposed in the flow path interface gap between the first adapter and the upper sealing cover.

[0011] Furthermore, the second valve assembly includes a second high-pressure valve and a second adapter; One end of the second adapter is connected to the flow path interface of the lower sealing cover, and the other end is connected to the second high-pressure valve, so that the liquid in the glass heating chamber can directly enter the second adapter and the second high-pressure valve through the lower sealing cover. This allows the liquid in the glass heating chamber to enter the second high-pressure valve through the lower sealing cover and the second adapter without going through an additional pipeline, avoiding the problem of excessively long flow paths caused by pipeline connections in traditional devices. This effectively reduces the amount of liquid residue in the flow path, and the direct connection method also reduces the risk of leakage that may be caused by too many pipeline joints.

[0012] Furthermore, to further improve the sealing effect, the second valve assembly also includes a fifth seal and a sixth seal; The fifth seal is disposed in the connection gap between the second adapter and the second high-pressure valve, and the sixth O-type seal is disposed in the flow path interface gap between the second adapter and the lower sealing cover.

[0013] Furthermore, the connection paths formed sequentially between the first valve assembly, the glass heating chamber, and the second valve assembly are located on the same straight line, which can avoid bends and turns in the flow path, reduce the resistance and dead zones of liquid during the flow process, and further reduce the amount of liquid residue.

[0014] Furthermore, to significantly reduce the processing cost of the frame, the frame support components are made entirely of sheet metal and formed by splicing.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: The upper and lower sealing covers of the sealing assembly are provided with radial sealing grooves, into which the two ends of the glass heating chamber are embedded and cooperate with the sealing element to form a radial seal, eliminating the dependence on axial assembly precision, making the seal more reliable and effectively reducing the risk of leakage; In this utility model, the pressure control component is directly connected to the sealing cover through an adapter, forming a direct connection path, and is directly located on the same axis, reducing liquid residue and flow resistance, and improving the accuracy of test data; The frame support component of this utility model is made of sheet metal, requiring no complex machining. At the same time, the pressure control component is adapted to a universal high-pressure valve through an adapter, eliminating the need for customization, which not only significantly reduces manufacturing and procurement costs, but also makes high-pressure valve replacement convenient, unrestricted by brand, and easier to maintain. Attached Figure Description The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 for Figure 1 A cross-sectional view of the structure marked AA. Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0016] The attached diagram shows the markings and corresponding component names: 1-Frame support assembly, 10-Rear cover plate, 11-Elastic limiting component, 12-Front cover plate, 13-First side plate, 14-Second side plate, 15-Mounting hole; 2-First valve assembly, 20-First high-pressure valve, 21-First high-pressure valve bracket, 22-First seal, 23-First adapter, 24-Second seal; 3-Sealing assembly, 30-Upper sealing cover, 31-Third seal, 32-Lower sealing cover, 33-Fourth seal; 4-Second valve assembly, 40-Second high-pressure valve, 41-Second high-pressure valve bracket, 42-Fifth seal, 43-Second adapter, 44-Sixth seal; 5-Glass heating chamber. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0018] Example This embodiment provides a digestion device for water quality monitoring, such as... Figures 1-3 As shown, the system includes a frame support assembly 1, which is formed by splicing sheet metal parts. It includes a rear cover plate 10, a front cover plate 12, a first side plate 13, and a second side plate 14. The rear cover plate 10 and the front cover plate 12 are rectangular and relatively parallel. Both of them have screw holes on their edges and are connected by screws. The first side plate 13 and the second side plate 14 are long strip-shaped plate structures, which are vertically connected to the left and right edges of the rear cover plate 10 and the front cover plate 12 by side plate screws, respectively, to form an internal cavity. This cavity is used to accommodate the glass heating chamber 5 and the sealing assembly 3.

[0019] Among them, such as Figure 3 and Figure 4 As shown, the glass heating chamber 5 is a cylindrical high-temperature resistant glass tube with openings at both ends. Its outer wall is polished to ensure surface smoothness. The length of the tube is adapted to the cavity height of the frame support component 1 and is used to contain the water quality monitoring sample liquid to be digested. Specifically, the two ends of the glass heating chamber 5 are sealed to the frame support component 1 through the sealing component 3. The sealing component 3 includes an upper sealing cover 30, a lower sealing cover 32, a third sealing element 31, and a fourth sealing element 33. The upper sealing cover 30 and the lower sealing cover (32) are both cylindrical structures. The center of their opposite end faces is provided with a radial sealing groove adapted to the outer diameter of the glass heating chamber 5. The third sealing element 31 and the fourth sealing element 33 are respectively embedded in the annular grooves of the upper sealing cover 30 and the lower sealing cover 32. The upper end of the glass heating chamber 5 is embedded in the radial sealing groove of the upper sealing cover 30, and the lower end is embedded in the radial sealing groove of the lower sealing cover 32. The third sealing element 31 and the fourth sealing element 33 are tightly fitted to the outer walls at both ends of the glass heating chamber 5 to form a radial seal.

[0020] Meanwhile, to prevent gaps from appearing between the radial sealing structure of the glass heating chamber 5 and the sealing assembly 3, which would affect the sealing effect, the frame support assembly 1 also includes an elastic limiting member 11. The elastic limiting member 11 is a sheet spring structure. An annular floating groove is reserved between the outer peripheral wall of the upper sealing cover 30 and the inner wall of the cavity of the frame support assembly 1. The end of the elastic limiting member 11 is inserted into the floating groove, and the displacement of the upper sealing cover 30 is limited by the spring force, so that there is no relative movement between the sealing assembly 3 and the frame support assembly 1.

[0021] Please refer to the following: Figures 1-4As shown, in order to reduce liquid residue and flow resistance in the glass heating chamber 5 and improve the accuracy of test data, this embodiment also includes a pressure control component. The pressure control component includes a first valve assembly 2 and a second valve assembly 4, which are respectively connected to the upper sealing cover 30 and the lower sealing cover 32 through flow paths, so that a direct flow path is formed between the first valve assembly 2, the glass heating chamber 5 and the second valve assembly 4.

[0022] Specifically, the first valve assembly 2 includes a first high-pressure valve 20, a first high-pressure valve bracket 21, a first adapter 23, a first seal 22, and a second seal 24. The first adapter 23 is a cylindrical connector with interfaces at both ends. One end is connected to the flow path interface on the side of the upper sealing cover 30 via a thread, and the other end is connected to the interface of the first high-pressure valve 20 via a thread. The first seal 22 is sleeved on the connection between the first adapter 23 and the first high-pressure valve 20, and the second seal 24 is sleeved on the connection between the first adapter 23 and the upper sealing cover 30. The first high-pressure valve bracket 21 is an L-shaped plate structure. One end is fixed to the outside of the front cover plate 12 by a bracket screw, and the other end is fixed to the valve body of the first high-pressure valve 20 by a screw.

[0023] Similarly, the second valve assembly 4 includes a second high-pressure valve 40, a second high-pressure valve bracket 41, a second adapter 43, a fifth seal 42, and a sixth seal 44. The structure of the second adapter 43 is the same as that of the first adapter 23. One end is connected to the flow path interface on the side of the lower sealing cover 32 via a thread, and the other end is connected to the interface of the second high-pressure valve 40 via a thread. The fifth seal 42 and the sixth seal 44 are respectively sleeved on the connection parts between the second adapter 43 and the second high-pressure valve 40, and between the second adapter 43 and the lower sealing cover 32. The structure of the second high-pressure valve bracket 41 is the same as that of the first high-pressure valve bracket 21, and it is used to fix the second high-pressure valve 40.

[0024] In this embodiment, the flow path connecting the first valve assembly 2, the glass heating chamber 5, and the second valve assembly 4 is located on the same axis. The liquid can enter the glass heating chamber 5 sequentially through the second high-pressure valve 40, the second adapter 43, and the lower sealing cover (32). After digestion, it flows out through the upper sealing cover 30, the first adapter 23, and the first high-pressure valve 20, forming a fluid channel without additional pipelines. This short flow path design minimizes the liquid residue in the flow path and avoids problems such as insufficient digestion and inaccurate detection data caused by liquid residue in traditional long flow path designs, greatly improving the accuracy and reliability of water quality monitoring.

[0025] In addition, the sealing element mentioned above can be a lip seal, an O-ring, or a rectangular cross-section seal. However, since the O-ring can effectively fill the gap and form a reliable seal through compression deformation, its structure is simple, and the adapter does not have a direct connection path of additional pipelines, thus not increasing the complexity of the flow path. Therefore, the sealing element mentioned in this embodiment is an O-ring.

[0026] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A digestion device for water quality monitoring, characterized in that, include: The frame support assembly (1) is made of sheet metal and formed by splicing, and has an internal cavity for accommodating the glass heating chamber (5). The two ends of the glass heating chamber (5) are sealed to the frame support assembly (1) through the sealing assembly (3). The sealing assembly (3) includes an upper sealing cover (30) and a lower sealing cover (32). The two ends of the glass heating chamber (5) are respectively embedded in the radial sealing grooves of the upper sealing cover (30) and the lower sealing cover (32), and a radial seal is formed between the sealing element and the outer wall of the glass heating chamber (5). The pressure control assembly includes a first valve assembly (2) and a second valve assembly (4), which are respectively connected to the upper sealing cover (30) and the lower sealing cover (32) through flow paths, so that a direct flow path is formed between the first valve assembly (2), the glass heating chamber (5) and the second valve assembly (4); The frame support assembly (1) includes a rear cover plate (10), a front cover plate (12), a first side plate (13), and a second side plate (14); the rear cover plate (10) and the front cover plate (12) are arranged parallel to each other, and the first side plate (13) and the second side plate (14) are respectively vertically connected to the two sides of the rear cover plate (10) and the front cover plate (12), together forming a cavity for accommodating the glass heating chamber (5) and the sealing assembly (3); The frame support assembly (1) further includes an elastic limiting member (11), and a floating groove is formed between the outer peripheral wall of the upper sealing cover (30) and the inner wall of the cavity; wherein, the elastic limiting member (11) is disposed on the side of the rear cover plate (10) facing the cavity, and the end of the elastic limiting member (11) is engaged with the floating groove, so that the sealing assembly (3) and the frame support assembly (1) have no relative movement.

2. The digestion device for water quality monitoring according to claim 1, characterized in that, The sealing assembly (3) includes at least one third seal (31) and at least one fourth seal (33); the third seal (31) is embedded in the inner wall of the radial sealing groove of the upper sealing cover (30), and the fourth seal (33) is embedded in the inner wall of the radial sealing groove of the lower sealing cover (32). The third seal (31) and the fourth seal (33) are respectively tightly fitted to the outer walls at both ends of the glass heating chamber (5) to form a seal.

3. The digestion device for water quality monitoring according to claim 1, characterized in that, The first valve assembly (2) includes a first high-pressure valve (20), a first high-pressure valve bracket (21), and a first adapter (23); One end of the first adapter (23) is connected to the flow path interface of the upper sealing cover (30), and the other end is connected to the first high pressure valve (20). One end of the first high pressure valve bracket (21) is fixed to the frame support assembly (1), and the other end of the first high pressure valve bracket (21) is fixed to the first high pressure valve (20).

4. The digestion device for water quality monitoring according to claim 3, characterized in that, The first valve assembly (2) further includes a first seal (22) and a second seal (24); The first seal (22) is disposed in the connection gap between the first adapter (23) and the first high pressure valve (20), and the second seal (24) is disposed in the flow path interface gap between the first adapter (23) and the upper sealing cover (30).

5. The digestion device for water quality monitoring according to claim 1, characterized in that, The second valve assembly (4) includes a second high-pressure valve (40) and a second adapter (43). One end of the second adapter (43) is connected to the flow path interface of the lower sealing cover (32), and the other end is connected to the second high-pressure valve (40), so that the liquid in the glass heating chamber (5) can directly enter the second adapter (43) and the second high-pressure valve (40) through the lower sealing cover (32), forming a fluid channel without additional pipelines.

6. The digestion device for water quality monitoring according to claim 5, characterized in that, The second valve assembly (4) also includes a fifth seal (42) and a sixth seal (44); The fifth seal (42) is disposed in the connection gap between the second adapter (43) and the second high-pressure valve (40), and the sixth seal (44) is disposed in the flow path interface gap between the second adapter (43) and the lower sealing cover (32).

7. The digestion device for water quality monitoring according to claim 1, characterized in that, The connection paths formed sequentially between the first valve assembly (2), the glass heating chamber (5), and the second valve assembly (4) are located on the same straight line.

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