Stop valve with multiple spool valve seats

Abstract

The utility model discloses a stop valve with multiple valve core valve seat relates to stop valve technical field. This stop valve with multiple valve core valve seat, including valve body, valve cover, valve rod, main valve core and prevent sinking unit, prevent sinking unit to be used for preventing the valve body bottom to form the deposit. This stop valve with multiple valve core valve seat adopts the structure of setting up prevent sinking unit at the valve body bottom, and the motor drives the rotation of the scraping strip to scrape the valve body bottom in the process of conveying some chemical raw materials, prevents the deposit from forming in the valve bottom when conveying some chemical raw materials, leads to the inaccurate flow regulation of stop valve, and simultaneously carries multiple valve core valve seat, can effectively prolong the service life of stop valve.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a gate valve with multiple valve cores and valve seats. Background Technology

[0002] In modern industrial fluid transport systems, gate valves are important control components. Multi-core gate valves, through innovative structural design, utilize multiple valve cores and seats working together to significantly improve sealing performance and stability, effectively solving problems such as easy wear and leakage in single-core gate valves. They are widely used in petroleum, chemical and other fields.

[0003] Existing gate valves, some of which employ multiple valve cores and seats working together within the valve body, can counteract media resistance and reduce valve stem rotation torque. The valve stem only needs to overcome the resistance of the media to the secondary valve seat, significantly reducing rotation torque. This improves the stability, reliability, and service life of the gate valve, while reducing manufacturing costs. However, when conveying certain chemical raw materials, such as brine solutions, the solute may crystallize and deposit at the bottom of the valve when temperature or concentration changes. Over time, the accumulation of deposits can narrow the valve's flow passage, leading to inaccurate flow regulation and, in severe cases, causing the valve to malfunction and affecting system operation. To address the shortcomings of existing technologies, this invention provides a gate valve with multiple valve cores and seats to solve the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a gate valve with multiple valve cores and seats, which solves the problem that after prolonged use, sediment buildup may narrow the valve flow channel, leading to inaccurate flow regulation, and in severe cases, the valve may malfunction and affect system operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shut-off valve with multiple valve cores and seats, comprising:

[0006] Valve body;

[0007] The valve cover is fixedly connected to the valve body by bolts;

[0008] A valve stem is disposed within the valve body and valve cover. A valve core sleeve is fitted onto the bottom of the valve stem, and a secondary valve core is fixedly connected to the bottom of the valve stem.

[0009] The main valve core is fixedly connected to the bottom of the valve core sleeve, and a secondary valve seat is provided at the bottom of the main valve core.

[0010] An anti-settling unit includes a rotating shaft rotatably connected to the bottom of the valve body, the anti-settling unit being used to prevent sediment from forming at the bottom of the valve body.

[0011] Preferably, the anti-sinking unit further includes:

[0012] The motor is located at the bottom of the valve body, and the bottom end of the anti-sinking unit is fixedly connected to the output end of the motor.

[0013] The rotating scraper is fixedly connected to the rotating shaft, and the rotating scraper abuts against the bottom of the valve body.

[0014] Preferably, the valve stem is provided with a drive handle, and a spring body is fixedly connected to the side wall of the valve stem, with the lower end of the spring body fixedly connected to the valve core sleeve.

[0015] Preferably, a flow guide hole is provided on the side wall of the main valve core.

[0016] Preferably, a second sealing ring is fixedly connected to the rotating shaft.

[0017] Preferably, a main valve seat is fixedly connected to the valve body, and a fixing rod is fixedly connected between the valve body and the motor.

[0018] Preferably, a first sealing ring and a sealing seat are fixedly connected inside the valve cover.

[0019] This utility model discloses a shut-off valve with multiple valve cores and seats, which has the following beneficial effects:

[0020] This gate valve with multiple valve cores and seats adopts an anti-settling unit structure at the bottom of the valve body. During the transportation of certain chemical raw materials, the motor drives the rotating scraper to scrape the bottom of the valve body to prevent sediment from forming at the bottom of the valve, which would lead to inaccurate flow regulation of the gate valve. At the same time, the multiple valve cores and seats can effectively extend the service life of the gate valve. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the main structure of the spring of this utility model;

[0024] Figure 3 This is a schematic diagram of the anti-sinking unit structure of this utility model.

[0025] In the diagram: 1. Valve body; 11. Fixed rod; 12. Main valve seat; 2. Main valve core; 21. Guide hole; 22. Secondary valve seat; 23. Valve core sleeve; 3. Valve stem; 31. Secondary valve core; 32. Spring body; 33. Drive handle; 4. Valve cover; 41. First sealing ring; 42. Sealing seat; 5. Anti-sinking unit; 51. Motor; 52. Rotating shaft; 521. Second sealing ring; 53. Rotating scraper. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] This application provides a gate valve with multiple valve cores and seats, which solves the problem that after long-term use, sediment accumulation may narrow the valve flow channel, leading to inaccurate flow regulation and, in severe cases, the valve may malfunction and affect system operation. The structure adopts an anti-settling unit 5 at the bottom of the valve body 1. During the transportation of certain chemical raw materials, the motor 51 drives the rotating scraper 53 to scrape the bottom of the valve body 1, preventing sediment from forming at the bottom of the valve and causing inaccurate flow regulation. At the same time, the multiple valve cores and seats can effectively extend the service life of the gate valve.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] This utility model discloses a shut-off valve with multiple valve cores and valve seats.

[0030] Example 1: According to the appendix Figure 1-3 As shown, including

[0031] Valve body 1;

[0032] The valve cover 4 is fixed to the valve body 1 by bolts. The valve cover 4 can be removed with tools to facilitate the maintenance of the components inside the valve body 1.

[0033] The valve stem 3 is located inside the valve body 1 and the valve cover 4. A valve core sleeve 23 is sleeved at the bottom of the valve stem 3. A secondary valve core 31 is fixedly connected to the bottom of the valve stem 3. The secondary valve core 31 and the secondary valve seat 22 work together to facilitate the complete blocking of the medium.

[0034] The main valve core 2 facilitates the initial blocking of the medium. It is fixedly connected to the bottom of the valve core sleeve 23. The bottom of the main valve core 2 is provided with a secondary valve seat 22.

[0035] The anti-settling unit 5 includes a rotating shaft 52 rotatably connected to the bottom of the valve body 1. The anti-settling unit 5 is used to prevent sediment from forming at the bottom of the valve body 1. During the conveying of certain chemical raw materials, the motor 51 drives the rotating scraper 53 to scrape the bottom of the valve body 1 to prevent sediment from forming at the bottom of the valve when conveying certain chemical raw materials.

[0036] A drive handle 33 is provided on the valve stem 3. Rotating the drive handle 33 facilitates the movement of the valve stem 3. A spring body 32 is fixedly connected to the side wall of the valve stem 3. The spring body 32 plays a buffering role. The lower end of the spring body 32 is fixedly connected to the valve core sleeve 23.

[0037] A guide hole 21 is provided on the side wall of the main valve core 2. After the main valve seat 12 initially blocks the medium, the guide hole 21 facilitates the passage of the medium.

[0038] A second sealing ring 521 is fixedly connected to the rotating shaft 52, and the second sealing ring 521 plays a sealing role.

[0039] A main valve seat 12 is fixedly connected inside the valve body 1. The main valve seat 12 and the main valve core 2 work together to facilitate the initial blocking of the medium. A fixing rod 11 is fixedly connected between the valve body 1 and the motor 51.

[0040] A first sealing ring 41 and a sealing seat 42 are fixedly connected inside the valve cover 4. The first sealing ring 41 and the sealing seat 42 seal the inside of the valve cover 4 to prevent leakage of the medium during transportation.

[0041] Rotating the drive handle 33 causes the valve stem 3 and the main valve core 2 to move downwards. First, the main valve core 2 and the main valve seat 12 work together to initially block the medium. Then, as the drive handle 33 is continuously rotated, the spring body 32 is compressed, and the auxiliary valve core 31 and the auxiliary valve seat 22 overlap. The auxiliary valve core 31 and the auxiliary valve seat 22 work together to completely block the medium, thus achieving the purpose of blocking the flow of the medium.

[0042] Example 2: According to the appendix Figure 1-3 As shown, including

[0043] Valve body 1;

[0044] The valve cover 4 is fixed to the valve body 1 by bolts. The valve cover 4 can be removed with tools to facilitate the maintenance of the components inside the valve body 1.

[0045] The valve stem 3 is located inside the valve body 1 and the valve cover 4. A valve core sleeve 23 is sleeved at the bottom of the valve stem 3. A secondary valve core 31 is fixedly connected to the bottom of the valve stem 3. The secondary valve core 31 and the secondary valve seat 22 work together to facilitate the complete blocking of the medium.

[0046] The main valve core 2 facilitates the initial blocking of the medium. It is fixedly connected to the bottom of the valve core sleeve 23. The bottom of the main valve core 2 is provided with a secondary valve seat 22.

[0047] The anti-settling unit 5 includes a rotating shaft 52 rotatably connected to the bottom of the valve body 1. The anti-settling unit 5 prevents sediment from forming at the bottom of the valve body 1. During the conveying of certain chemical raw materials, the motor 51 drives a rotating scraper 53 to scrape the bottom of the valve body 1, preventing sediment from forming at the bottom of the valve during the conveying of certain chemical raw materials. The anti-settling unit 5 also includes:

[0048] Motor 51 is located at the bottom of valve body 1, and anti-sinking unit 5 is fixedly connected to the output end of motor 51 at the bottom.

[0049] Rotary scraper 53 is fixedly connected to rotating shaft 52. Rotary scraper 53 abuts against the bottom of valve body 1. When the medium flows in the stop valve, rotating scraper 53 rotates in valve body 1 to prevent sedimentation.

[0050] When the medium flows in the shut-off valve, the rotating scraper 53 rotates in the valve body 1 to prevent sediment formation. First, the motor 51 drives the rotating shaft 52 to rotate, and the rotating shaft 52 drives the rotating scraper 53 fixedly connected to it to rotate. The rotating scraper 53 abuts against the bottom of the valve body 1, which facilitates scraping the bottom of the valve body 1 and prevents sediment formation.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A shut-off valve having multiple valve cores and seats, characterized in that, include: Valve body (1); The valve cover (4) is fixedly connected to the valve body (1) by bolts; The valve stem (3) is located inside the valve body (1) and the valve cover (4). A valve core sleeve (23) is sleeved on the bottom of the valve stem (3), and a secondary valve core (31) is fixedly connected to the bottom of the valve stem (3). The main valve core (2) is fixedly connected to the bottom of the valve core sleeve (23), and the bottom of the main valve core (2) is provided with a secondary valve seat (22). The anti-settling unit (5) includes a rotating shaft (52) rotatably connected to the bottom of the valve body (1), the anti-settling unit (5) being used to prevent sediment from forming at the bottom of the valve body (1).

2. The shut-off valve with multiple valve cores and seats according to claim 1, characterized in that, The anti-sinking unit (5) also includes: The motor (51) is located at the bottom of the valve body (1), and the bottom end of the anti-sinking unit (5) is fixedly connected to the output end of the motor (51); Rotary scraper (53) is fixedly connected to rotating shaft (52), and the rotating scraper (53) abuts against the bottom of valve body (1).

3. The shut-off valve with multiple valve cores and seats according to claim 1, characterized in that, A drive handle (33) is provided on the valve stem (3), and a spring body (32) is fixedly connected to the side wall of the valve stem (3). The lower end of the spring body (32) is fixedly connected to the valve core sleeve (23).

4. The shut-off valve with multiple valve cores and seats according to claim 1, characterized in that, The main valve core (2) has a flow guide hole (21) on its side wall.

5. The shut-off valve with multiple valve cores and seats according to claim 1, characterized in that, A second sealing ring (521) is fixedly connected to the rotating shaft (52).

6. The shut-off valve with multiple valve cores and seats according to claim 1, characterized in that, A main valve seat (12) is fixedly connected inside the valve body (1), and a fixing rod (11) is fixedly connected between the valve body (1) and the motor (51).

7. The shut-off valve with multiple valve cores and seats according to claim 1, characterized in that, The valve cover (4) is fixedly connected to a first sealing ring (41) and a sealing seat (42).

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