Soft sealing gate valve with lock

Abstract

The utility model discloses a soft sealing gate valve with a lock, and relates to the technical field of valves. The gate valve comprises a valve body, the valve body comprises a valve body, the top of the valve body is fixedly connected with a valve cover, the interior of the valve cover is rotationally connected with a valve rod, a gate plate is installed in the valve body, and a rotating wheel is installed at the top of the valve rod; the locking assembly comprises a ratchet gear fixedly connected to the top of the valve deck and an outer cover bin rotationally connected to the top of the valve deck in a sleeving mode, a sealing cover is installed outside the valve rod, a fixing rod is fixedly connected to the side face of an inner cavity of the outer cover bin, the free end of the fixing rod is movably connected with a limiting block in a sleeving mode, and the fixing rod is movably connected with a spring in a sleeving mode. A limiting lock is fixedly connected into the outer cover bin. The limiting block is clamped into the tooth gap of the ratchet wheel, then the limiting lock is rotated through a key, the spring bolt of the limiting lock is clamped on the back face of the limiting block, rotation of the rotating wheel is limited, the valve is prevented from being opened by mistake, and the stability of the gate is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and in particular relates to a lockable soft-seal gate valve. Background Technology

[0002] Soft-seal gate valves are a common type of valve. Their sealing surfaces are made of soft materials such as rubber. This design allows the soft sealing material to fit tightly against the valve seat when the gate valve is closed, achieving a good sealing effect and effectively preventing media leakage. Compared with other valves, soft-seal gate valves have superior sealing performance and lower operating torque, which helps improve the operating efficiency of pipeline systems.

[0003] However, existing gate valves are usually not lockable, which means that in industrial production, if the gate valve is affected by external vibrations, misoperation or other factors, the valve may open or close unexpectedly. This may cause abnormal changes in the flow and pressure of the medium in the pipeline, affecting the normal operation of the production process, and may even cause production accidents.

[0004] To address these issues, we provide a lockable soft-seal gate valve. Utility Model Content

[0005] The purpose of this utility model is to provide a lockable soft-seal gate valve. By inserting a limit block into the tooth gap of the ratchet, and then using a key to turn the limit lock, the locking tongue of the limit lock is locked on the back of the limit block, thereby restricting the rotation of the wheel. This solves the problems of lack of stability and safety in existing soft-seal gate valves.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a lockable soft-seal gate valve, including a valve body, a valve cover fixedly connected to the top of the valve body, a valve stem rotatably connected inside the valve cover, a gate plate installed inside the valve body, and the gate plate threadedly sleeved on the outside of the valve stem, and a rotating wheel installed on the top of the valve stem.

[0008] The locking assembly includes a ratchet fixedly connected to the top of the valve cover and an outer cover chamber rotatably sleeved on the top of the valve cover. A cover is installed on the outside of the valve stem and is located on the top of the outer cover chamber. A fixing rod is fixedly connected to the inner side of the outer cover chamber. A limit block is movably sleeved on the free end of the fixing rod. A spring is movably sleeved on the outside of the fixing rod and is located between the limit block and the inner wall of the outer cover chamber. A limit lock is fixedly connected inside the outer cover chamber, and the locking tongue of the limit lock is engaged with the back of the limit block.

[0009] The present invention is further configured such that the cover includes a cover plate located at the top of the outer cover chamber, and a sleeve movably sleeved on the outside of the valve stem is fixedly connected to the center of the cover plate. A side threaded hole is opened on the outside of the valve stem, and an installation hole is opened on the outside of the sleeve. An installation bolt is rotatably connected inside the installation hole, and the installation bolt is threaded into the inside of the side threaded hole.

[0010] The present invention is further configured such that the outer cover is hexagonal, and a retaining ring is fixedly connected to the bottom of the cover plate, and the retaining ring fits against the inner wall of the outer cover.

[0011] The present invention is further configured such that the top of the valve stem is square, and the rotating wheel is movably sleeved on the top of the valve stem. The top of the valve stem has a top screw hole, and the inside of the rotating wheel is rotatably connected to a fixing bolt, and the fixing bolt is threaded into the inside of the top screw hole.

[0012] The present invention is further configured such that the end of the limiting block facing the ratchet is tapered, and the limiting block is movably engaged in the tooth gap of the ratchet.

[0013] The present invention is further configured such that the valve cover is connected to the top of the valve body via a flange, and a sealing gasket is sandwiched between the bottom of the valve cover and the top of the valve body.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model uses a spring to push the limiting block to move along the fixed rod, and then it engages with the teeth of the ratchet gear. After that, the limiting lock is turned with a key, so that the locking tongue of the limiting lock is locked on the back of the limiting block, thereby limiting the limiting block and restricting the rotation of the ratchet gear, preventing the valve from being opened accidentally, and ensuring the stability of the gate.

[0016] 2. By removing the fixing bolts and mounting bolts, and then removing the rotating wheel, the cover can be opened and the outer cover can be taken out as a whole, which makes it more convenient to inspect and maintain the locking components. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0021] Figure 4 for Figure 2A magnified structural diagram of point A in the middle.

[0022] Figure 5 for Figure 3 A magnified structural diagram at point B in the middle.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 100. Valve body; 101. Valve body; 102. Valve cover; 103. Valve stem; 103a. Side screw hole; 103b. Top screw hole; 104. Gate; 105. Rotary wheel; 105a. Fixing bolt; 200. Locking assembly; 201. Ratchet; 202. Outer cover; 203. Cover; 203a. Cover plate; 203b. Sleeve; 203c. Mounting bolt; 203d. Mounting hole; 203e. Snap ring; 204. Fixing rod; 205. Limit block; 206. Spring; 207. Limit lock. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Example 1

[0027] Please see Figures 1 to 4 This utility model is a lockable soft-seal gate valve, including a valve body 100, including a valve body 101, a valve cover 102 fixedly connected to the top of the valve body 101, a valve stem 103 rotatably connected inside the valve cover 102, a gate plate 104 installed inside the valve body 101, and the gate plate 104 is threadedly sleeved on the outside of the valve stem 103, and a rotating wheel 105 is installed on the top of the valve stem 103;

[0028] The locking assembly 200 includes a ratchet 201 fixedly connected to the top of the valve cover 102 and an outer cover 202 rotatably sleeved on the top of the valve cover 102. A cover 203 is installed on the outside of the valve stem 103 and is located on the top of the outer cover 202. A fixing rod 204 is fixedly connected to the inner side of the outer cover 202. A limit block 205 is movably sleeved on the free end of the fixing rod 204. A spring 206 is movably sleeved on the outside of the fixing rod 204 and is located between the limit block 205 and the inner wall of the outer cover 202. A limit lock 207 is fixedly connected inside the outer cover 202 and the locking tongue of the limit lock 207 is engaged with the back of the limit block 205.

[0029] Specifically, the end of the limiting block 205 facing the ratchet 201 is tapered, and the limiting block 205 is movably engaged with the tooth gap of the ratchet 201. By engaging the limiting block 205 with the tooth gap of the ratchet 201, and then using a key to turn the limiting lock 207, the locking tongue of the limiting lock 207 is engaged with the back of the limiting block 205, thereby restricting the rotation of the ratchet 201, and further restricting the rotation of the rotating wheel 105, preventing the valve from being opened accidentally, and ensuring the stability of the gate.

[0030] Furthermore, the valve cover 102 is connected to the top of the valve body 101 via a flange, and a sealing gasket is sandwiched between the bottom of the valve cover 102 and the top of the valve body 101.

[0031] The operation process of this embodiment is as follows: When it is necessary to lock the valve, the spring 206 first pushes the limit block 205 to move along the fixed rod 204, and then it engages with the tooth gap of the ratchet 201. Then, the key is used to turn the limit lock 207, so that the locking tongue of the limit lock 207 is locked on the back of the limit block 205, thereby limiting the limit block 205, thereby restricting the rotation of the ratchet 201, preventing the valve from being opened accidentally, and ensuring the stability of the gate.

[0032] Example 2

[0033] Please see Figures 2 to 5 Based on the first specific embodiment, the cover 203 includes a cover plate 203a located at the top of the outer cover 202. A sleeve 203b is fixedly connected to the center of the cover plate 203a and is movably sleeved on the outside of the valve stem 103. A side screw hole 103a is opened on the outside of the valve stem 103, and an installation hole 203d is opened on the outside of the sleeve 203b. An installation bolt 203c is rotatably connected inside the installation hole 203d, and the installation bolt 203c is threaded into the inside of the side screw hole 103a.

[0034] The outer cover 202 is hexagonal, and a retaining ring 203e is fixedly connected to the bottom of the cover plate 203a. The retaining ring 203e fits against the inner wall of the outer cover 202, and the outer cover 202 can rotate with the cover 203 through the retaining ring 203e.

[0035] Specifically, the top of the valve stem 103 is square, and the rotating wheel 105 is movably sleeved on the top of the valve stem 103. The top of the valve stem 103 is provided with a top screw hole 103b, and a fixing bolt 105a is rotatably connected inside the rotating wheel 105, and the fixing bolt 105a is threaded into the inside of the top screw hole 103b.

[0036] The operation process of this embodiment is as follows: When the locking assembly 200 needs to be repaired, the fixing bolt 105a and the mounting bolt 203c are removed, and then the rotating wheel 105 is removed so that the cover 203 can be opened, and the outer cover 202 can be taken out as a whole, which makes the repair of the locking assembly 200 more convenient.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A lockable soft-seal gate valve, characterized in that: include, The valve body (100) includes a valve body (101), a valve cover (102) is fixedly connected to the top of the valve body (101), a valve stem (103) is rotatably connected inside the valve cover (102), a gate (104) is installed inside the valve body (101), and the gate (104) is threaded onto the outside of the valve stem (103), and a rotating wheel (105) is installed on the top of the valve stem (103). A locking assembly (200) includes a ratchet gear (201) fixedly connected to the top of the valve cover (102) and an outer cover chamber (202) rotatably sleeved on the top of the valve cover (102). A cover (203) is installed on the outside of the valve stem (103), and the cover (203) is located on the top of the outer cover chamber (202). A fixing rod (204) is fixedly connected to the inner side of the outer cover chamber (202). A limit block (205) is movably sleeved on the free end of the fixing rod (204). A spring (206) is movably sleeved on the outside of the fixing rod (204), and the spring (206) is located between the limit block (205) and the inner wall of the outer cover chamber (202). A limit lock (207) is fixedly connected inside the outer cover chamber (202), and the locking tongue of the limit lock (207) is engaged with the back of the limit block (205).

2. A lockable soft-seal gate valve according to claim 1, characterized in that, The cover (203) includes a cover plate (203a) located on top of the outer cover (202). A sleeve (203b) is fixedly connected to the center of the cover plate (203a) and movably sleeved outside the valve stem (103). A side threaded hole (103a) is opened on the outside of the valve stem (103), and an installation hole (203d) is opened on the outside of the sleeve (203b). An installation bolt (203c) is rotatably connected inside the installation hole (203d), and the installation bolt (203c) is threaded into the inside of the side threaded hole (103a).

3. A lockable soft-seal gate valve according to claim 2, characterized in that, The outer cover (202) is hexagonal, and the bottom of the cover plate (203a) is fixedly connected with a retaining ring (203e), and the retaining ring (203e) fits against the inner wall of the outer cover (202).

4. A lockable soft-seal gate valve according to claim 1, characterized in that, The top of the valve stem (103) is square, and the rotating wheel (105) is movably sleeved on the top of the valve stem (103). The top of the valve stem (103) is provided with a top screw hole (103b). The rotating wheel (105) is rotatably connected with a fixing bolt (105a), and the fixing bolt (105a) is threaded into the inside of the top screw hole (103b).

5. A lockable soft-seal gate valve according to claim 1, characterized in that, The end of the limiting block (205) facing the ratchet (201) is tapered, and the limiting block (205) is movably engaged in the tooth gap of the ratchet (201).

6. A lockable soft-seal gate valve according to claim 1, characterized in that, The valve cover (102) is connected to the top of the valve body (101) via a flange, and a sealing gasket is sandwiched between the bottom of the valve cover (102) and the top of the valve body (101).

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