Manual gate valve for air pipe

Abstract

The utility model relates to the technical field of ventilation and exhaust, and discloses an air pipe manual gate valve which comprises a valve body, the bottom of the inner wall of the valve body is fixedly connected with a valve seat, the top of the inner wall of the valve body is in threaded connection with a lead screw, second guide grooves are formed in the left side and the right side of the inner wall of the valve body, and second positioning grooves are formed in the inner walls of the second guide grooves. A turning plate is slidably connected to the inner wall of the valve seat, a first guide groove is formed in the inner wall of the turning plate, a T-shaped block is slidably connected to the inner wall of the first guide groove, first positioning grooves are formed in the left side and the right side of the turning plate, and sliding blocks are slidably connected to the inner walls of the first positioning grooves. According to the self-sealing check valve, the screw rod is rotated to drive the T-shaped block to move downwards, when the first positioning groove is attached to the second positioning groove and fluid blows from the rear side, the turning plate is pushed to slide in the second positioning groove and be attached to the bottom of the valve seat, the self-sealing purpose is achieved, practicability is improved, safety is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of ventilation and exhaust technology, and in particular to a manual gate valve for air ducts. Background Technology

[0002] Air ducts are pipes used in ventilation and air conditioning systems to transport air. They are used to distribute and guide airflow in the indoor and outdoor environments of buildings, providing fresh air to the interior and removing stale air. They can be divided into circular air ducts, rectangular air ducts, and spiral air ducts. When installing air ducts, the air duct gate valve is an indispensable part.

[0003] Duct gate valves are a common type of valve used in ventilation and air conditioning systems to control the flow of air in ducts and regulate the flow rate. The core component is the gate, which can be rotated and lifted to control the opening and closing of the valve. A fully closed gate valve can cut off the airflow in the duct for system maintenance and emergency shutdown, while a partially open gate valve can regulate the air volume and control the air volume distribution in the duct. Therefore, it plays an irreplaceable role in the installation and use of ducts.

[0004] Most existing manual gate valves for air ducts use a gasket placed between the gate and the valve seat. When the gate is closed, the gasket is pressed against the valve seat to form a seal. However, after long-term use, the gasket is worn, which reduces the sealing performance, resulting in reduced practicality, reduced safety, and shortened service life. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a manual gate valve for ductwork, which aims to improve the problem that the gasket of the existing manual gate valve for ductwork is worn down after long-term use, resulting in a decrease in sealing performance and a reduction in practicality.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a manual gate valve for air ducts, comprising a valve body, a valve seat fixedly connected to the bottom of the inner wall of the valve body, a threaded rod connected to the top of the inner wall of the valve body, a second guide groove provided on both the left and right sides of the inner wall of the valve body, a positioning groove II provided on the inner wall of the second guide groove, a flapper slidably connected to the inner wall of the valve seat, a first guide groove provided on the inner wall of the flapper, a T-shaped block slidably connected to the inner wall of the first guide groove, a positioning groove I provided on both the left and right sides of the flapper, a sliding block slidably connected to the inner wall of the positioning groove I, a limit groove provided on the top of the valve body, a spring II fixedly connected to the inward side of the sliding block, and an installation structure fixedly connected to the front and rear sides of the valve body, the installation structure being used for quick installation of the device.

[0007] Through the above technical solution: the valve body is used to guide the flow of fluid to ensure smooth flow; the valve seat can limit the flapper and fit it with its sealing surface for self-sealing; the flapper is used to adjust the flow rate of the fluid in the valve body; and the screw is used to adjust the height of the flapper to adjust the flow rate.

[0008] As a further description of the above technical solution:

[0009] The mounting structure includes a hollow mounting shell. The outer wall of the hollow mounting shell is fixedly connected to the outer wall of the valve body. The upper and lower sides of the inner wall of the hollow mounting shell are provided with first sliding grooves. A sliding plate is slidably connected to the bottom of the inner wall of the first sliding groove. A locking block is slidably connected to the bottom of the inner wall of the first sliding groove near the edge. Sliding rods are fixedly connected to the upper and lower sides of the sliding plate. A hollow column is fixedly connected to the inner side of the inner wall of the first sliding groove. A sliding column is slidably connected to the inner wall of the hollow column. A hollow column is fixedly connected to the top of the inner wall of the hollow mounting shell. A sliding column is slidably connected to the inner wall of the hollow column. A sliding rod is fixedly connected to the bottom of the sliding column. A spring is fixedly connected to the bottom of both the sliding column and the sliding column.

[0010] The above technical solution is as follows: the hollow mounting shell is used to insert the air duct into it for limiting installation; the spring can slide the sliding column 1 and the sliding column 2 out from the hollow column 1 and the hollow column 2, and at the same time, it can also retract inward to avoid breakage when squeezed.

[0011] As a further description of the above technical solution:

[0012] A pull handle is fixedly connected to the top of the sliding rod, and a pull hole is provided on the inner wall of the pull handle.

[0013] The above technical solution involves a pull hole designed to help the user insert their finger into the hole to pull the handle.

[0014] As a further description of the above technical solution:

[0015] A positioning block is fixedly connected to the top of the valve body, and the inner wall of the positioning block is slidably connected to the outer wall of the flap.

[0016] The above technical solution uses a positioning block to assist in positioning the movement of the flip panel.

[0017] As a further description of the above technical solution:

[0018] The top end of the lead screw is fixedly connected to a rotating handle, and the inner wall of the T-shaped block is threadedly connected to the outer wall of the flap.

[0019] The above technical solution involves a rotating handle used to help the user rotate the lead screw.

[0020] As a further description of the above technical solution:

[0021] The valve seat has sealing gaskets fixedly connected to both the front and rear sides of its inner wall, and the outer wall of the sliding block is slidably connected to the inner wall of the positioning groove.

[0022] Through the above technical solution, the sealing gasket can enhance the sealing performance between the valve seat and the flapper.

[0023] As a further description of the above technical solution:

[0024] Rubber pads are fixedly connected to the left and right sides of the inner wall of the hollow mounting shell, and the outer wall of the sliding rod one is in contact with the outer wall of the sliding rod two.

[0025] Through the above technical solution, the rubber pad can prevent the duct from deforming due to compression during installation.

[0026] As a further description of the above technical solution:

[0027] The valve body has multiple screws threadedly connected to its left side. The outer wall of each screw has a nameplate, and the inner wall of the nameplate is threadedly connected to the outer wall of the screw.

[0028] The above technical solution uses screws to fix the nameplate in a conspicuous position for installation.

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, the T-shaped block is moved downward by rotating the lead screw, thereby simultaneously causing the first guide groove to move the flap downward along the limiting groove. When the first positioning groove and the second positioning groove are in contact, the second spring pops out the sliding block and engages with it. At the same time, the bottom of the flap also contacts the bottom of the inner wall of the valve seat. When fluid blows from the rear, it will push the flap to slide in the second positioning groove and fit with the bottom of the valve seat, achieving the purpose of self-sealing, improving practicality, enhancing safety, and extending service life.

[0031] 2. In this utility model, by inserting the air duct into the hollow mounting shell, it squeezes the sliding plate, thereby driving the sliding rod two to move backward and squeezing the sliding column one to move into the hollow column one. At the same time, the spring one inside the hollow column two pushes the sliding column two to move, which in turn pushes the sliding rod one to move, causing it to squeeze the locking block to move and lock the air duct. This achieves the purpose of rapid installation, speeds up work efficiency, and improves practicality. Attached Figure Description

[0032] Figure 1 This is a front perspective view of a manual gate valve for air ducts proposed in this utility model;

[0033] Figure 2This is a side view of a manual gate valve for air ducts proposed in this utility model;

[0034] Figure 3 This is a cross-sectional view of the first slide groove of a manual gate valve for air ducts proposed in this utility model;

[0035] Figure 4 This is a partial structural breakdown diagram of the spring of a manual gate valve for air ducts proposed in this utility model.

[0036] Figure 5 This is a cross-sectional view of a T-shaped block of a manual gate valve for air ducts proposed in this utility model;

[0037] Figure 6 This is a sectional view of the limiting groove of a manual gate valve for air ducts proposed in this utility model;

[0038] Figure 7 This is a partial structural breakdown diagram of the positioning groove of a manual gate valve for air ducts proposed in this utility model.

[0039] Legend:

[0040] 1. Valve body; 2. Mounting structure; 201. Hollow mounting shell; 202. Sliding plate; 203. Hollow column one; 204. Sliding column one; 205. First sliding groove; 206. Sliding rod one; 207. Sliding rod two; 208. Locking block; 209. Hollow column two; 210. Spring one; 211. Sliding column two; 3. Lead screw; 4. Valve seat; 5. T-block; 6. First guide groove; 7. Flip plate; 8. Positioning groove two; 9. Second guide groove; 10. Sliding block; 11. Spring two; 12. Positioning groove one; 13. Sealing gasket; 14. Pull handle; 15. Pull hole; 16. Positioning block; 17. Rotating handle; 18. Rubber pad; 19. Nameplate; 20. Screw; 21. Limit groove. Detailed Implementation

[0041] 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.

[0042] Please see the appendix Figure 1 - Appendix Figure 3This utility model provides an embodiment of a manual duct gate valve, comprising a valve body 1, a valve seat 4 fixedly connected to the bottom of the inner wall of the valve body 1, and a screw 3 threadedly connected to the top of the inner wall of the valve body 1. The valve body 1 is used to carry and guide fluid flow. Second guide grooves 9 are provided on both the left and right sides of the inner wall of the valve body 1, and positioning grooves 8 are provided on the inner walls of the second guide grooves 9. A flap 7 is slidably connected to the inner wall of the valve seat 4, and the valve seat 4 is used to seal the fully closed flap 7. A first guide groove 6 is provided on the inner wall of the flap 7. A T-shaped block 5 is slidably connected to the inner wall of the groove 6. Positioning grooves 12 are provided on both the left and right sides of the flap 7. The T-shaped block 5 can limit itself in the first guide groove 6. A sliding block 10 is slidably connected to the inner wall of the positioning groove 12. A limiting groove 21 is provided on the top of the valve body 1. A spring 11 is fixedly connected to the inward side of the sliding block 10. An installation structure 2 is fixedly connected to the front and rear sides of the valve body 1. The installation structure 2 is used for quick installation of the device. The sliding block 10 can be inserted into the second guide groove 9, thereby limiting the flap 7.

[0043] Specifically, the limiting groove 21 is used to limit the stroke of the flap 7 to prevent excessive movement during its movement. The flap 7 is used to fall and block the fluid flow. The second guide groove 9 provides a stable trajectory for the sliding of the flap 7. The lead screw 3 can move the T-block 5 by rotating it. The second spring 11 can provide elastic force for the movement and reset of the sliding block 10, locking it into the second guide groove 9, thereby limiting the up and down movement of the flap 7.

[0044] Please see the appendix Figure 4 - Appendix Figure 6 The installation structure 2 includes a hollow mounting shell 201. The outer wall of the hollow mounting shell 201 is fixedly connected to the outer wall of the valve body 1. The upper and lower sides of the inner wall of the hollow mounting shell 201 are provided with first sliding grooves 205. The hollow mounting shell 201 is used to limit the air duct within it. A sliding plate 202 is slidably connected to the bottom of the inner wall of the first sliding groove 205. A locking block 208 is slidably connected to the bottom of the inner wall of the first sliding groove 205 near the edge. The locking block 208 is used to limit the edge of the air duct. Sliding rods 207 are fixedly connected to the upper and lower sides of the sliding plate 202. A hollow column 203 is fixedly connected to the inner wall of the first sliding groove 205 on one side. The inner wall of the hollow column 203 slides... A sliding column 204 is connected to the hollow mounting shell 201. The top of the hollow mounting shell 201 is fixedly connected to a hollow column 209. A sliding column 211 is slidably connected to the inner wall of the hollow column 209. A sliding rod 206 is fixedly connected to the bottom of the sliding column 211. The sliding column 211 is used to push the sliding rod 206 downward. A spring 210 is fixedly connected to the bottom of both the sliding column 211 and the sliding column 204. A pull handle 14 is fixedly connected to the top of the sliding rod 206. A pull hole 15 is opened on the inner wall of the pull handle 14. The pull handle 14 is used to facilitate the user to pull the sliding rod 206 upward.

[0045] Specifically, spring 210 helps slide post 211 and slide post 204 to reset, thereby limiting the duct. It also provides cushioning to prevent structural damage when subjected to impact and violent installation. Pull handle 14 allows the operator to pull slide rod 206 more easily. Pull hole 15 allows the user to apply pulling force and adjust the position more conveniently. Hollow mounting shell 201 has excellent load-bearing capacity. First slide groove 205 allows slide plate 202 and locking block 208 to slide stably and be guided within it.

[0046] Please see the appendix Figure 5 - Appendix Figure 7 The valve body 1 has multiple screws 20 threadedly connected to the left side. The outer wall of the screws 20 is provided with a nameplate 19. The inner wall of the nameplate 19 is threadedly connected to the outer wall of the screws 20. The nameplate 19 is used to help users understand the relevant information of the valve. The top of the screw 3 is fixedly connected to a rotating handle 17. The inner wall of the T-shaped block 5 is threadedly connected to the outer wall of the flap 7. The top of the valve body 1 is fixedly connected to a positioning block 16. The rotating handle 17 is used to help the user rotate the screw 3. The inner wall of the positioning block 16 is slidably connected to the outer wall of the flap 7. The valve seat 4 has sealing gaskets 13 fixedly connected to both the front and rear sides of its inner wall. The outer wall of the sliding block 10 is slidably connected to the inner wall of the positioning groove 8. The sealing gasket 13 is used to enhance the sealing performance of the valve seat 4. The hollow mounting shell 201 has rubber gaskets 18 fixedly connected to both the left and right sides of its inner wall. The outer wall of the sliding rod 1 206 is in contact with the outer wall of the sliding rod 207. The contact between them allows the sliding rod 207 to limit the sliding rod 1 206.

[0047] Specifically, the rubber pad 18 not only plays a role in buffering and shock absorption, but also greatly improves the stability and sealing of the valve installation. The sealing gasket 13 improves the sealing performance of the valve seat 4, ensuring the safety and reliability of the valve during use and extending its service life. The rotating handle 17 makes it easy for the user to rotate the screw 3, providing great convenience for the user. The screw 20 is used to fix the nameplate 19 in the appropriate position.

[0048] Working principle: When you want to close the valve, first turn the screw (3) to move the T-block (5) downwards. At the same time, the flap (7) that is engaged with the T-block (5) through the first guide groove (6) moves downwards along the limiting groove (21) until the bottom of the flap (7) is in contact with the bottom of the inner wall of the valve seat (4) and stops. At the same time, when the positioning groove one (12) and the positioning groove two (8) coincide, the spring two (11) pushes the sliding block (10) outwards. When the ejector engages with the positioning groove 2 (8), the fluid blows towards the flap (7), pushing the flap (7) to move along the inner wall of the valve seat (4). At the same time, the T-shaped block (5) has a small amount of clearance in the first guide groove (6), allowing the flap (7) to move on the first guide groove (6) simultaneously. Meanwhile, the ejected sliding block (10) will slide in the positioning groove 2 (8) to self-lock, so that the bottom of the flap (7) fits against the inner wall of the valve seat (4) for self-sealing.

[0049] When installation is required, first insert the duct into the hollow mounting shell (201) to press down on the sliding plate (202). This causes the sliding column one (204) to compress the spring one (210) inside and move into the hollow column one (203), thereby moving the sliding rod two (207) backward until it is no longer in contact with the sliding rod one (206). This causes the spring one (210) inside the hollow column two (209) to push the sliding column two (211) out of its hollow column two (209), and then push the sliding rod one (206) out. Push it downwards to fit against the locking block (208) and move it downwards, thereby limiting the air duct within it. When it needs to be removed, pull the handle (14) upwards to make the sliding rod one (206) press the sliding column two (211) upwards and then remove the air duct. At the same time, the spring one (210) inside the hollow column one (203) pushes the sliding column one (204) outwards, so that the sliding plate (202) can push the sliding rod two (207) so that its chamfer fits against the chamfer of the sliding rod one (206) and presses it upwards to complete the reset.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manual gate valve for air ducts, comprising a valve body (1), characterized in that: A valve seat (4) is fixedly connected to the bottom of the inner wall of the valve body (1). A screw (3) is threadedly connected to the top of the inner wall of the valve body (1). A second guide groove (9) is opened on both the left and right sides of the inner wall of the valve body (1). A positioning groove (8) is opened on the inner wall of the second guide groove (9). A flap (7) is slidably connected to the inner wall of the valve seat (4). A first guide groove (6) is opened on the inner wall of the flap (7). A T-shaped block (5) is slidably connected to the inner wall of the first guide groove (6). A positioning groove (12) is opened on both the left and right sides of the flap (7). A sliding block (10) is slidably connected to the inner wall of the positioning groove (12). A limit groove (21) is opened on the top of the valve body (1). A spring (11) is fixedly connected to the inward side of the sliding block (10). An installation structure (2) is fixedly connected to the front and rear sides of the valve body (1). The installation structure (2) is used for quick installation of the device.

2. The manual gate valve for air ducts according to claim 1, characterized in that: The mounting structure (2) includes a hollow mounting shell (201). The outer wall of the hollow mounting shell (201) is fixedly connected to the outer wall of the valve body (1). The upper and lower sides of the inner wall of the hollow mounting shell (201) are provided with first sliding grooves (205). A sliding plate (202) is slidably connected to the bottom of the inner wall of the first sliding groove (205). A locking block (208) is slidably connected to the bottom of the inner wall of the first sliding groove (205) near the edge. Sliding rods (207) are fixedly connected to the upper and lower sides of the sliding plate (202). The first sliding groove ( Hollow column 1 (203) is fixedly connected to the inner wall of the hollow mounting shell (205) on one side. Sliding column 1 (204) is slidably connected to the inner wall of hollow column 1 (203). Hollow column 2 (209) is fixedly connected to the top of the inner wall of the hollow mounting shell (201). Sliding column 2 (211) is slidably connected to the inner wall of hollow column 2 (209). Sliding rod 1 (206) is fixedly connected to the bottom of sliding column 2 (211). Spring 1 (210) is fixedly connected to the bottom of both sliding column 2 (211) and sliding column 1 (204).

3. A manual gate valve for air ducts according to claim 2, characterized in that: A handle (14) is fixedly connected to the top of the sliding rod (206), and a pull hole (15) is provided on the inner wall of the handle (14).

4. A manual gate valve for air ducts according to claim 1, characterized in that: A positioning block (16) is fixedly connected to the top of the valve body (1), and the inner wall of the positioning block (16) is slidably connected to the outer wall of the flap (7).

5. A manual gate valve for air ducts according to claim 1, characterized in that: The top end of the lead screw (3) is fixedly connected to a rotating handle (17), and the inner wall of the T-shaped block (5) is threadedly connected to the outer wall of the flap (7).

6. A manual gate valve for air ducts according to claim 1, characterized in that: The valve seat (4) has sealing gaskets (13) fixedly connected to the front and rear sides of its inner wall, and the outer wall of the sliding block (10) is slidably connected to the inner wall of the positioning groove (8).

7. A manual gate valve for air ducts according to claim 2, characterized in that: Rubber pads (18) are fixedly connected to the left and right sides of the inner wall of the hollow mounting shell (201), and the outer wall of the sliding rod one (206) is in contact with the outer wall of the sliding rod two (207).

8. A manual gate valve for air ducts according to claim 1, characterized in that: The valve body (1) has a plurality of screws (20) threadedly connected to the left side. The outer wall of the screws (20) is provided with a nameplate (19), and the inner wall of the nameplate (19) is threadedly connected to the outer wall of the screws (20).

Images