Metal salt vacuum drying high-precision pressure regulating valve

Abstract

The utility model relates to the technical field of governing valve discloses a kind of metal salt vacuum drying high-precision pressure governing valve, including valve body, the right side of the valve body is provided with gas inlet, the left end of the valve body is provided with gas outlet, the inner wall of the valve body is fixedly connected with valve seat, the right side inner wall of the valve body is fixedly connected with pressure sensor, the middle part of the valve body is slidably connected with valve rod, the bottom of the valve rod is fixedly connected with valve core, the surface of the valve rod is provided with sealing assembly, the top of the valve body is fixedly connected with mounting bracket. The utility model is provided with sealing assembly, specifically when valve core enters the position of through hole, sealing pad contacts with the top of valve seat at this time, so that sealing block slides upwards along valve rod, so that limit spring is compressed, sealing block is provided with continuous down pressure by limit spring, valve core position is covered by sealing block, prevent gas pressure from leaking through the gap between valve seat and valve core, so as to improve sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, and in particular to a high-precision pressure regulating valve for vacuum drying of metal salts. Background Technology

[0002] Metal salts are compounds composed of metal ions and acid radicals. The metal ions can be elemental metals or ions formed by the dissolution of metal oxides, while the acid radicals originate from acidic substances. Metal salts are diverse in type and properties, and are widely used in chemical, pharmaceutical, food, and agricultural fields, such as as catalysts, drug components, food additives, or fertilizers. The physical and chemical properties of metal salts depend on the types of metals and acid radicals they contain. Common metal salts include sodium chloride, copper sulfate, and calcium carbonate, which exhibit different characteristics in terms of solubility in water, thermal stability, and reactivity. Pressure regulating valves are required during the vacuum drying process of metal salts to ensure that the required vacuum level is maintained during the drying process, thereby improving drying efficiency and product quality.

[0003] When pressure regulating valves are used for a long time, the sealing ring on the valve core will wear out due to repeated contact with the inner wall of the valve seat. After the sealing ring wears out, gaps may easily appear between the sealing ring and the valve seat, leading to media leakage and affecting the performance. Therefore, we propose a high-precision pressure regulating valve with metal salt vacuum drying. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a high-precision pressure regulating valve for vacuum drying of metal salts.

[0005] This utility model is achieved using the following technical solution: a high-precision pressure regulating valve for vacuum drying of metal salts, comprising a valve body, a gas inlet on the right side of the valve body, a gas outlet on the left side of the valve body, a valve seat fixedly connected to the inner wall of the valve body, a pressure sensor fixedly connected to the inner wall of the right side of the valve body, a valve stem slidably connected to the middle of the valve body, a valve core fixedly connected to the bottom of the valve stem, a sealing assembly provided on the surface of the valve stem, a mounting bracket fixedly connected to the top of the valve body, a mounting base fixedly connected to the end of the mounting bracket away from the valve body, an electric push rod fixedly connected to the top of the mounting base, a controller fixedly connected to the top of the mounting base, and a sealing collar fixedly connected to the output end of the electric push rod passing through the mounting base.

[0006] The sealing assembly includes a retaining ring, a limiting spring fixedly connected to the bottom of the retaining ring, a sealing block fixedly connected to the end of the limiting spring away from the retaining ring, and a sealing gasket fixedly connected to the bottom of the sealing block.

[0007] The above technical solution adjusts the position of the valve stem and valve core by extending and retracting the electric push rod, thereby controlling the pressure. When the valve core enters the through hole position, the sealing gasket contacts the top of the valve seat, causing the sealing block to slide upward along the valve stem. This compresses the limit spring, which provides continuous downward pressure to the sealing block. The sealing block covers the valve core position, preventing air pressure from leaking through the gap between the valve seat and the valve core, thus improving the sealing effect.

[0008] As a further improvement to the above solution, the inner wall of the fixing ring is fixedly connected to the surface of the valve stem, and the limiting spring is sleeved on the surface of the valve stem.

[0009] The above technical solution uses a fixing ring to install the limiting spring, thus preventing the limiting spring from shifting when compressed.

[0010] As a further improvement to the above solution, the inner wall of the sealing block is slidably connected to the surface of the valve stem, the valve core is located inside the sealing block, and the bottom of the sealing gasket contacts the top of the valve seat.

[0011] With the above technical solution, since the sealing block and the valve stem are slidably connected, the sealing block is prevented from shifting during movement. The elasticity of the sealing gasket allows it to fit against the surface of the valve seat, ensuring a good sealing effect.

[0012] As a further improvement to the above solution, a through hole is provided in the middle of the valve seat, and the lower end of the valve core extends into the interior of the through hole.

[0013] The above technical solution allows the air pressure inside the valve body to be released through the through hole in the valve seat.

[0014] As a further improvement to the above solution, the lower end of the pressure sensor extends into the interior of the valve body, and the pressure sensor is electrically connected to the controller via a wire.

[0015] With the above technical solution, the detection end of the pressure sensor is located inside the valve body, which facilitates real-time monitoring of the pressure inside the valve body. The pressure sensor monitors the pressure inside the valve body in real time and transmits the data to the controller. The controller compares the preset pressure value with the actual detected pressure value to determine whether pressure adjustment is needed.

[0016] As a further improvement to the above solution, the top of the valve stem extends to the outside of the valve body and is fixedly connected to the top of the inner wall of the sealing collar.

[0017] The above technical solution prevents air pressure inside the valve body from leaking through the gaps in the valve stem when the valve core is closed by using a sealing ring.

[0018] As a further improvement to the above solution, flanges are fixedly connected to both the left and right ends of the valve body.

[0019] The above technical solution facilitates connection to pipelines in external equipment via flanges at both ends of the valve body.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention improves the sealing effect by setting a sealing component. Specifically, when the valve core enters the through hole position, the sealing gasket contacts the top of the valve seat, causing the sealing block to slide upward along the valve stem. This compresses the limit spring, which provides continuous downward pressure to the sealing block. The sealing block covers the valve core position, preventing air pressure from leaking through the gap between the valve seat and the valve core, thereby improving the sealing effect.

[0022] This invention utilizes a pressure sensor and a controller. Specifically, the pressure sensor monitors the internal pressure of the valve body in real time and transmits the data to the controller. The controller compares the preset pressure value with the actual detected pressure value to determine whether pressure adjustment is necessary. When the pressure is too high, pressure relief is achieved by controlling the extension and retraction of an electric push rod to adjust the position of the valve stem. The retraction of the electric push rod moves the valve stem upward, causing the valve core to move away from the through hole of the valve seat, allowing the internal pressure of the valve body to be discharged outward through the gas outlet, thereby reducing the internal gas pressure of the tank. When the gas pressure drops to the preset value, the electric push rod pushes the valve stem downward, causing the valve core to enter the interior of the valve seat, preventing pressure leakage and achieving high-precision pressure control. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the present invention.

[0025] Figure 3 This utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0026] Figure 4 This is a schematic diagram of the valve stem connection structure of this utility model;

[0027] Figure 5 This is a side view of the structure of this utility model.

[0028] Explanation of key symbols:

[0029] 1. Valve body; 2. Gas inlet; 3. Gas outlet; 4. Valve seat; 5. Pressure sensor; 6. Valve stem; 7. Valve core; 8. Sealing assembly; 801. Retaining ring; 802. Limit spring; 803. Sealing block; 804. Sealing gasket; 9. Mounting bracket; 10. Mounting base; 11. Electric push rod; 12. Controller; 13. Sealing collar; 14. Flange. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Example:

[0032] Please combine Figure 1-5 This embodiment of a high-precision pressure regulating valve for vacuum drying of metal salts includes a valve body 1, a gas inlet 2 on the right side of the valve body 1, a gas outlet 3 on the left side of the valve body 1, a valve seat 4 fixedly connected to the inner wall of the valve body 1, a pressure sensor 5 fixedly connected to the inner wall of the right side of the valve body 1, a valve stem 6 slidably connected to the middle of the valve body 1, a valve core 7 fixedly connected to the bottom of the valve stem 6, a sealing assembly 8 on the surface of the valve stem 6, a mounting bracket 9 fixedly connected to the top of the valve body 1, a mounting base 10 fixedly connected to the end of the mounting bracket 9 away from the valve body 1, an electric push rod 11 fixedly connected to the top of the mounting base 10, a controller 12 fixedly connected to the top of the mounting base 10, and the output end of the electric push rod 11 passing through the mounting base 10 and fixedly connected to a sealing collar 13.

[0033] The sealing assembly 8 includes a retaining ring 801. A limiting spring 802 is fixedly connected to the bottom of the retaining ring 801. A sealing block 803 is fixedly connected to the end of the limiting spring 802 away from the retaining ring 801. A sealing gasket 804 is fixedly connected to the bottom of the sealing block 803. When the electric push rod 11 retracts, it drives the valve stem 6 to move upward, causing the valve core 7 to move away from the through hole of the valve seat 4. This allows the internal pressure of the valve body 1 to be discharged outward through the gas outlet 3, thereby reducing the gas pressure inside the tank. When the valve core 7 enters the through hole position, the sealing gasket 804 will contact the top of the valve seat 4, causing the sealing block 803 to slide upward along the valve stem 6, compressing the limiting spring 802. The limiting spring 802 provides continuous downward pressure to the sealing block 803, and the sealing block 803 covers the position of the valve core 7, preventing gas pressure from leaking through the gap between the valve seat 4 and the valve core 7, thereby improving the sealing effect.

[0034] The inner wall of the retaining ring 801 is fixedly connected to the surface of the valve stem 6, and the limiting spring 802 is sleeved on the surface of the valve stem 6.

[0035] The inner wall of the sealing block 803 is slidably connected to the surface of the valve stem 6, the valve core 7 is located inside the sealing block 803, and the bottom of the sealing gasket 804 is in contact with the top of the valve seat 4.

[0036] A through hole is provided in the middle of the valve seat 4, and the lower end of the valve core 7 extends into the interior of the through hole.

[0037] The lower end of the pressure sensor 5 extends into the interior of the valve body 1. The pressure sensor 5 is electrically connected to the controller 12 via a wire. The pressure sensor 5 monitors the pressure inside the valve body 1 in real time and transmits the data to the controller 12. The controller 12 compares the preset pressure value with the actual detected pressure value to determine whether pressure adjustment is required.

[0038] The top of the valve stem 6 extends to the outside of the valve body 1 and is fixedly connected to the top of the inner wall of the sealing collar 13.

[0039] Flanges 14 are fixedly connected to both the left and right ends of the valve body 1.

[0040] The implementation principle of a high-precision pressure regulating valve for vacuum drying of metal salts in this embodiment is as follows: During use, the valve body 1 is installed on the vacuum drying tank. A pressure sensor 5 monitors the internal pressure of the valve body 1 in real time and transmits the data to a controller 12. The controller 12 compares the preset pressure value with the actual detected pressure value to determine whether pressure regulation is necessary. When the pressure is too high, pressure relief is achieved by controlling the extension and retraction of the electric push rod 11 to adjust the position of the valve stem 6. The retraction of the electric push rod 11 moves the valve stem 6 upward, causing the valve core 7 to move away from the through hole of the valve seat 4, allowing the internal pressure of the valve body 1 to be released through the gas outlet 3. The pressure inside the tank is reduced by releasing air. When the pressure drops to a preset value, the electric push rod 11 pushes the valve rod 6 downward, causing the valve core 7 to enter the valve seat 4, thus preventing pressure leakage and achieving high-precision pressure control. When the valve core 7 enters the through hole position, the sealing gasket 804 contacts the top of the valve seat 4, causing the sealing block 803 to slide upward along the valve rod 6, compressing the limit spring 802. The limit spring 802 provides continuous downward pressure to the sealing block 803, which covers the valve core 7, preventing air pressure from leaking through the gap between the valve seat 4 and the valve core 7, thereby improving the sealing effect.

[0041] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A high-precision pressure regulating valve for vacuum drying of metal salts, characterized in that, The valve body (1) includes a gas inlet (2) on the right side and a gas outlet (3) on the left side. A valve seat (4) is fixedly connected to the inner wall of the valve body (1). A pressure sensor (5) is fixedly connected to the inner wall of the right side of the valve body (1). A valve stem (6) is slidably connected to the middle of the valve body (1). A valve core (7) is fixedly connected to the bottom of the valve stem (6). A sealing assembly (8) is provided on the surface of the valve stem (6). A mounting bracket (9) is fixedly connected to the top of the valve body (1). A mounting base (10) is fixedly connected to the end of the mounting bracket (9) away from the valve body (1). An electric push rod (11) is fixedly connected to the top of the mounting base (10). A controller (12) is fixedly connected to the top of the mounting base (10). The output end of the electric push rod (11) passes through the mounting base (10) and is fixedly connected to a sealing collar (13). The sealing assembly (8) includes a retaining ring (801), a limiting spring (802) is fixedly connected to the bottom of the retaining ring (801), a sealing block (803) is fixedly connected to the end of the limiting spring (802) away from the retaining ring (801), and a sealing gasket (804) is fixedly connected to the bottom of the sealing block (803).

2. The high-precision pressure regulating valve for vacuum drying of metal salts as described in claim 1, characterized in that: The inner wall of the fixing ring (801) is fixedly connected to the surface of the valve stem (6), and the limiting spring (802) is sleeved on the surface of the valve stem (6).

3. The high-precision pressure regulating valve for vacuum drying of metal salts as described in claim 1, characterized in that: The inner wall of the sealing block (803) is slidably connected to the surface of the valve stem (6), the valve core (7) is located inside the sealing block (803), and the bottom of the sealing gasket (804) is in contact with the top of the valve seat (4).

4. The high-precision pressure regulating valve for vacuum drying of metal salts as described in claim 3, characterized in that: The valve seat (4) has a through hole in the middle, and the lower end of the valve core (7) extends into the through hole.

5. The high-precision pressure regulating valve for vacuum drying of metal salts as described in claim 1, characterized in that: The lower end of the pressure sensor (5) extends into the interior of the valve body (1), and the pressure sensor (5) is electrically connected to the controller (12) via a wire.

6. The high-precision pressure regulating valve for vacuum drying of metal salts as described in claim 3, characterized in that: The top of the valve stem (6) extends to the outside of the valve body (1) and is fixedly connected to the top of the inner wall of the sealing collar (13).

7. The high-precision pressure regulating valve for vacuum drying of metal salts as described in claim 6, characterized in that: Flanges (14) are fixedly connected to both the left and right ends of the valve body (1).

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