Anti-material-accumulation downward expansion valve

Abstract

The utility model relates to the field of valve bodies, in particular to a material accumulation prevention downward expansion valve. The material accumulation prevention downward expansion valve comprises a valve body and an opening and closing mechanism, the valve body is provided with a feeding channel and a discharging channel which are communicated with each other, and an included angle is formed between the feeding channel and the discharging channel; the opening and closing mechanism is provided with a plugging assembly and an acting assembly, the plugging assembly is installed in the valve body in a sliding mode, and the acting assembly acts on the plugging assembly and is used for enabling the plugging assembly to rotate and move in the axial direction of the feeding channel; and the blocking assembly is configured to have a blocking position for blocking the feeding port of the feeding channel and an opening position for opening the feeding channel in the rotating movement process. According to the utility model, materials can be well scraped in the opening and opening process of the valve, so that the materials are prevented from being stacked.

Description

Technical Field

[0001] This utility model relates to the field of valve bodies, specifically to an anti-material accumulation downward expansion valve. Background Technology

[0002] The bottom-discharge valve, also known as the bottom-discharge valve or tank bottom valve, consists of a valve body and a sealing assembly. The valve body has an interconnected inlet channel and an outlet channel. The sealing assembly is slidably installed in the valve body. It can slide upwards to block the inlet of the inlet channel, thus closing the valve, or slide downwards to a position that does not interfere with the inlet and outlet channels, thus opening the valve.

[0003] However, during use, if the material is powdery, dust will accumulate on the inner wall of the feed channel, especially at the junction of the feed and discharge channels, where the accumulation is more severe due to the angle between them. Over time, this will affect the discharge efficiency of the valve when it is open, and may also cause the sealing components and sealing rings to fail, affecting the overall use of the valve. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an anti-material accumulation and spreading valve that can effectively scrape material during the opening and closing of the valve, thereby avoiding material accumulation.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: an anti-material accumulation and downward expansion valve, comprising:

[0006] The valve body has an interconnected feed channel and a discharge channel, which are arranged at an angle to each other;

[0007] The opening and closing mechanism includes a blocking component and an actuating component. The blocking component is slidably mounted in the valve body, and the actuating component acts on the blocking component to cause the blocking component to rotate axially along the feed channel.

[0008] The sealing component is configured to have a sealing position that blocks the feed inlet of the feed channel and an opening position that opens the feed channel during rotational movement.

[0009] Further, a specific structure of the action component is provided, wherein the action component is a power guiding mechanism, including a power mechanism and a guiding mechanism; wherein,

[0010] The guiding mechanism includes a fixed post and a mating sleeve. The fixed post is fixedly installed in the valve body, and the mating sleeve is embedded in the sealing assembly and coaxially arranged with the sealing assembly. One of the fixed post and the mating sleeve is provided with a spiral groove, and the other is provided with a mating block. The mating block is embedded in the spiral groove and allows sliding along the spiral groove.

[0011] The power mechanism is used to drive the sealing assembly to move axially along the feed channel. During the process of moving axially along the feed channel under the drive of the power mechanism, the sealing assembly rotates under the cooperation of the spiral groove and the mating block.

[0012] Further, a specific structure of a plugging assembly is provided, the plugging assembly comprising:

[0013] The piston is provided with a piston chamber in the valve body, and the piston is slidably sealed within the piston chamber. The power mechanism acts on the piston.

[0014] The sealing part is fixedly installed on the piston and / or the mating sleeve, and is used to block the feed inlet of the feed channel.

[0015] Further, a specific structure of a power mechanism is provided, wherein the power mechanism is an air source, and an air inlet channel is provided on the side of the piston chamber facing upwards and away from the feed channel, towards the outlet of the piston.

[0016] To further improve wear resistance, the sealing part is a ceramic plate, which is mounted on the piston via a valve stem, which is sleeved around the outer periphery of the mating sleeve.

[0017] To further improve the sealing effect, the feed inlet of the feed channel is provided with a sealing ring for cooperating with the ceramic plate and / or the valve stem.

[0018] Furthermore, to prevent dust from entering the piston chamber and affecting the piston's performance, the piston chamber is connected to the feed channel through a connecting channel, the valve stem passes through the connecting channel, and a sealing ring is provided between the valve stem and the connecting channel.

[0019] After adopting the above technical solution, the sealing component is rotated and moved along the axial direction of the feed channel by the action component. During the process of moving from the open position to the sealing position (closing the valve) and from the sealing position to the open position (opening the valve), the sealing component moves and rotates at the same time. This can scrape off the powder accumulated on the peripheral wall of the feed channel, especially at the junction of the feed channel and the discharge channel, so as to avoid the discharge efficiency of the valve being affected by the accumulation of powder, and also to avoid the failure of the sealing component and other sealing structures due to the accumulation of powder on the peripheral wall of the feed channel, thereby improving the reliability of the entire valve. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the sealing component of the anti-material accumulation valve of this utility model in the sealing position;

[0021] Figure 2This is a schematic diagram of the sealing assembly of the anti-material accumulation valve of this utility model in the open position;

[0022] Figure 3 This is a schematic diagram of the valve body of this utility model;

[0023] Figure 4 This is a schematic diagram of the guiding mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the piston structure of this utility model;

[0025] In the diagram, 1. Valve body; 11. Feed channel; 12. Discharge channel; 13. Piston chamber; 14. Connecting channel; 2. Sealing assembly; 21. Piston; 22. Sealing part; 23. Valve stem; 3. Guide mechanism; 31. Fixed column; 311. Mating block; 32. Mating sleeve; 321. Spiral groove; 4. Air inlet channel; 5. Sealing ring. Detailed Implementation

[0026] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] like Figures 1-5 As shown, an anti-material accumulation and downward expansion valve includes:

[0028] The valve body 1 has an infeed channel 11 and an outlet channel 12 that are connected to each other, and the infeed channel 11 and the outlet channel 12 are arranged at an angle to each other;

[0029] The opening and closing mechanism has a blocking component 2 and an actuating component. The blocking component 2 is slidably installed in the valve body 1. The actuating component acts on the blocking component 2 to cause the blocking component 2 to rotate and move axially along the feed channel 11. The blocking component 2 is configured to have a blocking position that blocks the feed inlet of the feed channel 11 and an open position that opens the feed channel 11 during the rotational movement.

[0030] Specifically, the sealing component 2 is rotated and moved along the axial direction of the feed channel 11 by the action component. During the process of moving from the open position to the sealing position (closing the valve) and from the sealing position to the open position (opening the valve), the sealing component 2 moves and rotates at the same time. This can scrape off the powder accumulated on the peripheral wall of the feed channel 11, especially at the junction of the feed channel 11 and the discharge channel 12, so as to avoid the discharge efficiency of the valve being affected by the accumulation of powder, and also to avoid the failure of the sealing component 2 and other sealing structures due to the accumulation of powder on the peripheral wall of the feed channel 11, thereby improving the reliability of the entire valve.

[0031] Preferably, the sealing component 2 rotates in opposite directions during the process of moving from the open position to the sealing position (closing the valve) and during the process of moving from the sealing position to the open position (opening the valve), so that the accumulated powder can be scraped off more efficiently and thoroughly.

[0032] like Figures 1-4 As shown, the functional component is a power-guided mechanism, including a power mechanism and a guide mechanism 3; wherein,

[0033] The guide mechanism 3 includes a fixed post 31 and a mating sleeve 32. The fixed post 31 is fixedly installed inside the valve body 1, and the mating sleeve 32 is embedded in the sealing assembly 2 and is coaxially arranged with the sealing assembly 2. One of the fixed post 31 and the mating sleeve 32 is provided with a spiral groove 321, and the other is provided with a mating block 311. The mating block 311 is embedded in the spiral groove 321 and allows sliding along the spiral groove 321.

[0034] The power mechanism is used to drive the sealing assembly 2 to move axially along the feed channel 11. During the process of moving axially along the feed channel 11 under the drive of the power mechanism, the sealing assembly 2 rotates with the cooperation of the spiral groove 321 and the mating block 311.

[0035] The guide mechanism 3 of this structure can effectively ensure that the sealing assembly 2 rotates in opposite directions during the process of moving from the open position to the sealing position (closing the valve) and during the process of moving from the sealing position to the open position (opening the valve). Figure 1 , Figure 2 and Figure 4 In the structure shown, the spiral groove 321 is disposed on the mating sleeve 32, and the mating block 311 is disposed on the fixed post 31. The spiral groove 321 has an angle of more than 360 degrees in the circumferential direction, so that the sealing assembly 2 rotates at least one revolution during the process of moving from the open position to the sealing position (closing the valve) and during the process of moving from the sealing position to the open position (opening the valve).

[0036] It should be noted that the structure of the action component is not limited to this. It can also be just a power mechanism. The power mechanism drives the sealing component 2 to move and rotate at the same time. For example, the action component includes a rotary drive mechanism and an axial drive mechanism. The rotary drive mechanism is connected to the sealing component 2 and is used to drive the sealing component 2 to rotate. The rotary drive mechanism can be a micro motor, etc. The axial drive mechanism drives the rotary drive mechanism and the sealing component 2 to move axially. The axial drive mechanism can be a cylinder, a push rod, etc.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, the sealing component 2 includes:

[0038] Piston 21, valve body 1 is provided with piston chamber 13, piston 21 is sealed and slidably fitted in piston chamber 13, power mechanism acts on piston 21;

[0039] The sealing part 22 is fixedly installed on the piston 21 and / or the mating sleeve 32, and is used to block the feed inlet of the feed channel 11.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the power mechanism is an air source, and an air inlet channel 4 is provided on the side of the piston chamber 13 facing upward piston 21 away from the feed channel 11 and towards the outlet piston 21.

[0041] It should be noted that the power mechanism can also be a cylinder, push rod, etc.

[0042] The sealing part 22 is a ceramic plate, which is mounted on the piston 21 via a valve stem 23. The valve stem 23 is fitted around the outer circumference of the mating sleeve 32. The ceramic plate is relatively wear-resistant, which can extend its service life. The valve stem 23 fits precisely with the valve body 1, ensuring that there is no accumulation of debris in the feed channel 11.

[0043] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the feed inlet of the feed channel 11 is provided with a sealing ring 5 for cooperating with the ceramic plate and / or valve stem 23.

[0044] In this way, when the sealing component 3 blocks the inlet of the feed channel 11, the sealing performance can be better guaranteed, and the sealing effect can be ensured.

[0045] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the feed channel 11 is connected to the piston chamber 13 through the connecting channel 14, the valve stem 23 passes through the connecting channel 14, and a sealing ring 5 is provided between the valve stem 23 and the connecting channel 14.

[0046] In this way, it can effectively prevent the material in the feed channel 11 from falling into other positions of the valve body 1 through the gap between the valve stem 23 and the valve body 1, such as the piston chamber 13, which would affect the performance of the piston 21 and even the use of the entire valve.

[0047] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the connecting channel 14, the feeding channel 11, and the piston chamber 13 are coaxially arranged. The inner diameter of the connecting channel 14 is equal to the inner diameter of the feeding channel 11, and both are smaller than the inner diameter of the piston chamber 13.

[0048] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A valve for preventing material accumulation and downward expansion, characterized in that, include: The valve body (1) has a feed channel (11) and a discharge channel (12) that are interconnected, and the feed channel (11) and the discharge channel (12) are arranged at an angle to each other; The opening and closing mechanism has a blocking assembly (2) and an actuating assembly. The blocking assembly (2) is slidably installed inside the valve body (1). The actuating assembly acts on the blocking assembly (2) to cause the blocking assembly (2) to rotate axially along the feed channel (11). The sealing component (2) is configured to have a sealing position that blocks the feed inlet of the feed channel (11) and an opening position that opens the feed channel (11) during rotational movement.

2. The anti-material accumulation valve according to claim 1, characterized in that, The functional component is a power guiding mechanism, including a power mechanism and a guiding mechanism (3); wherein, The guide mechanism (3) includes a fixed post (31) and a mating sleeve (32). The fixed post (31) is fixedly installed inside the valve body (1). The mating sleeve (32) is embedded inside the sealing assembly (2) and is coaxially arranged with the sealing assembly (2). One of the fixed post (31) and the mating sleeve (32) is provided with a spiral groove (321), and the other is provided with a mating block (311). The mating block (311) is embedded in the spiral groove (321) and is allowed to slide along the spiral groove (321). The power mechanism is used to drive the sealing assembly (2) to move axially along the feed channel (11). During the process of moving axially along the feed channel (11) under the drive of the power mechanism, the sealing assembly (2) rotates under the cooperation of the spiral groove (321) and the mating block (311).

3. The anti-material accumulation valve according to claim 2, characterized in that, The blocking component (2) includes: The piston (21) is provided with a piston chamber (13) in the valve body (1). The piston (21) is sealed and slidably fitted in the piston chamber (13). The power mechanism acts on the piston (21). The sealing part (22) is fixedly installed on the piston (21) and / or the mating sleeve (32) for sealing the feed inlet of the feed channel (11).

4. The anti-material accumulation valve according to claim 3, characterized in that, The power mechanism is an air source, and an air inlet channel (4) is provided on the side of the piston chamber (13) facing upward toward the piston (21) away from the feed channel (11) and toward the piston (21).

5. The anti-material accumulation valve according to claim 3, characterized in that, The sealing part (22) is a ceramic plate, which is mounted on the piston (21) via a valve stem (23), and the valve stem (23) is sleeved on the outer periphery of the mating sleeve (32).

6. The anti-material accumulation valve according to claim 5, characterized in that, The feed inlet of the feed channel (11) is provided with a sealing ring (5) for cooperating with the ceramic plate and / or the valve stem (23).

7. The anti-accumulation and downward expansion valve according to claim 5, characterized in that, The piston chamber (13) is connected to the feed channel (11) through the connecting channel (14), the valve stem (23) passes through the connecting channel (14), and a sealing ring (5) is provided between the valve stem (23) and the connecting channel (14).

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