Vacuum valve with safety lock catch and vacuum suction lifting device

Abstract

The utility model relates to the technical field of hoisting equipment, in particular to a vacuum valve with a safety lock catch and a vacuum suction hoisting device, and the vacuum valve with the safety lock catch comprises a valve core, a valve body and a pressing ring. According to the utility model, a lock catch structure is additionally arranged on the basis of the conventional common two-position three-way valve, the structural design is simple, the production cost is low, and the operation is simple, so that the potential safety hazard of misoperation is completely eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting equipment, in particular to a vacuum valve with a safety buckle. Background Technique

[0002] The vacuum lifter is a fast, safe and convenient automatic device, which is classified as a type of lifting tool abroad. It uses the principle of vacuum adsorption, takes a vacuum pump or a vacuum blower as the vacuum source to generate a vacuum at the suction cup end, so as to firmly suck up various workpieces, and transports the workpieces to the designated position through a rotatable robotic arm or a crane. The vacuum lifter can do almost everything: whether you need to stack boxes, load barrels onto a truck, stack metal sheets or wood, or transport stones or furniture - using a vacuum lifter to transport will always be your best handling solution. Using a vacuum lifter for handling is faster, more ergonomic and safer.

[0003] At present, the vacuum valve of the two-way three-way valve used on the vacuum lifting equipment, one end of the two-way three-way valve is connected to the vacuum pump, and the other end is connected to the suction cup. By pushing the valve body outside the vacuum valve up and down, the on-off of the vacuum valve is carried out. This often causes misoperation of pushing and pulling the valve body outside the vacuum valve, and there are great potential safety hazards in use. Therefore, a vacuum valve with better safety is urgently needed to reduce misoperation and eliminate potential safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum valve with a safety buckle to solve the problems raised in the above background technique.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A vacuum valve with a safety buckle includes a valve core, a valve body and a pressing ring;

[0007] The valve core includes a valve core seat, a first pressing ring limiting groove of the valve core, a second pressing ring limiting groove of the valve core, a first valve core vent hole, a valve core inner partition and a second valve core vent hole arranged in sequence;

[0008] The valve body includes a pressing ring installation groove, a first O-ring installation groove and a second O-ring installation groove arranged in sequence. A first O-ring is installed in the first O-ring installation groove, and a second O-ring is installed in the second O-ring installation groove;

[0009] The bottom of the pressing ring is provided with a spring limiting groove, a spring is arranged in the spring limiting groove, and a limiting protrusion is arranged on the inner wall of the pressing ring;

[0010] The distance between the first O-ring installation groove and the second O-ring installation groove is greater than the distance between the first valve core vent hole and the second valve core vent hole.

[0011] Preferably, internal threads are provided at both ends of the inner wall of the valve core.

[0012] Preferably, the first O-ring or the second O-ring is made of rubber;

[0013] Preferably, a valve core retaining ring installation groove and a wire retaining ring are provided on the outer wall of the end of the valve core away from the valve core seat.

[0014] Preferably, the limiting protrusion is annular.

[0015] Preferably, the limiting protrusion is provided on the inner wall of the pressing ring close to the side of the valve core seat.

[0016] Preferably, the first valve core vent hole or the second valve core vent hole is a row of evenly distributed round holes.

[0017] A vacuum lifting device includes a vacuum valve with a safety lock as described in any one of the foregoing.

[0018] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: On the basis of the commonly used two-way three-way valve at present, the present utility model adds a lock structure, with simple structural design, low production cost, and simple operation, thus eliminating the potential safety hazard of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0020] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 is a schematic diagram of the valve core of an embodiment of the present utility model;

[0022] Figure 3 is a three-dimensional schematic diagram of an embodiment of the present utility model without the pressing ring installed;

[0023] Figure 4 is a three-dimensional view, a front view, and a cross-sectional view A-A of the front view of the pressing ring of an embodiment of the present utility model;

[0024] Figure 5 is a bottom view and a cross-sectional view B-B of the bottom view of an embodiment of the present utility model;

[0025] Figure 6It is the top view of the embodiment of the present utility model and the C-C cross-sectional view of the top view (the air passage is blocked from left to right);

[0026] Figure 7 It is the top view of the embodiment of the present utility model and the D-D cross-sectional view of the top view (the air passage is open from left to right);

[0027] In the figure: valve core 1; valve core seat 11; first pressing ring limiting groove 12 of the valve core; second pressing ring limiting groove 13 of the valve core; first air vent hole 14 of the valve core; inner partition 15 of the valve core; second air vent hole 16 of the valve core; valve core snap ring installation groove 17; valve body 2; pressing ring installation groove 21; first O-ring installation groove 22; second O-ring installation groove 23; first O-ring 3; second O-ring 4; wire snap ring 5; pressing ring 6; spring limiting groove 61; spring 62; limiting protrusion 63. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] As Figures 1 to 7 shown:

[0030] A vacuum valve with a safety lock includes: a valve core, a valve body, a first O-ring, a second O-ring, a wire snap ring, and a pressing ring.

[0031] The valve core includes: a valve core seat, a first pressing ring limiting groove of the valve core, a second pressing ring limiting groove of the valve core, a first air vent hole of the valve core, an inner partition of the valve core, a second air vent hole of the valve core, and a valve core snap ring installation groove;

[0032] The valve body includes a pressing ring installation groove, a first O-ring installation groove, and a second O-ring installation groove;

[0033] The pressing ring includes a spring limiting groove, a spring, and a limiting protrusion;

[0034] The valve core seat mainly plays a limiting role to prevent the valve body installed with the pressing ring from disengaging from one side of the valve core seat. After the valve body installed with the pressing ring is sleeved on the valve core, a wire snap ring is installed in the valve core snap ring installation groove on the other side, thereby fixing the valve body installed with the pressing ring on the valve core. The cooperation between the wire snap ring and the valve core snap ring installation groove facilitates the installation of the vacuum valve, has a simple structure, stable fixation, and greatly facilitates the assembly and use.

[0035] The inner partition of the valve core is arranged inside the valve core between the first air vent hole and the second air vent hole of the valve core;

[0036] There are a first pressing ring limiting groove of the valve core and a second pressing ring limiting groove of the valve core between the valve core seat and the first valve core vent hole. These two limiting grooves are used to cooperate with the limiting protrusions of the pressing ring to lock the vacuum valve in two different states. For the specific connection relationship description, please refer to the following content.

[0037] The pressing ring installation groove is used to install the pressing ring so that the pressing ring is completely embedded in the valve body. Then the valve core penetrates through the pressing ring and the valve body. The first O-ring installation groove is used to install and fix the first O-ring, and the second O-ring installation groove is used to install and fix the second O-ring. The first O-ring installation groove and the second O-ring installation groove are made of elastic materials, such as rubber, thus ensuring airtightness.

[0038] The spring limiting groove is arranged at the bottom of the pressing ring. A spring is provided in the spring limiting groove. The limiting protrusion is arranged on the inner wall of the pressing ring close to the valve core seat side. The limiting protrusion can be an annular limiting protrusion, which is convenient for the processing of the pressing ring. In addition, one side of the bottom of the pressing ring is adapted to the inner wall of the valve body and is an arc, and the top, that is, the side protruding outside the valve body, is adapted to the outer wall of the valve body and is an arc. The widths of the left and right sides are the same as those of the pressing ring installation groove, ensuring that the pressing ring can be embedded in the valve body.

[0039] When the pressing ring is not pressed, the spring at the bottom of the pressing ring embeds the limiting protrusion of the pressing ring into the first pressing ring limiting groove of the valve core or the second pressing ring limiting groove of the valve core, making it fixed and non-sliding, thereby ensuring that the valve body is fixed and non-sliding, eliminating potential safety hazards. When it is necessary to open or close the vacuum valve with a safety lock, press the pressing ring. The limiting protrusion of the pressing ring disengages from the first pressing ring limiting groove of the valve core or the second pressing ring limiting groove of the valve core. Then, hold the pressing ring and the valve body as a whole and slide left and right on the valve core to perform gear adjustment. When reaching the first pressing ring limiting groove of the valve core or the second pressing ring limiting groove of the valve core, release the pressing ring again, and the gear is locked again.

[0040] The specific connection relationship is as follows:

[0041] The bottom of the pressing ring is provided with a spring limiting groove, and a spring is installed in the spring limiting groove. An annular limiting protrusion is arranged on the inner wall of the pressing ring close to the valve core seat side. The annular limiting protrusion and the first pressing ring limiting groove of the valve core and the second pressing ring limiting groove of the valve core limit each other, limiting the vacuum valve with a safety lock to two states.

[0042] When the annular limiting protrusion is embedded in the first pressing ring limiting groove of the valve core, the first valve core vent hole and the second valve core vent hole are completely sealed by the first O-ring, the second O-ring and the valve body. There is a thread on the inner wall of the valve core on the side of the valve core retaining ring installation groove, which is connected to the vacuum pump of the lifting device. There is a thread on the inner wall of the valve core seat, which is connected to the suction cup of the lifting device. At this time, the suction cup and the vacuum pump are in gas conduction, and the vacuum pump performs vacuum pumping operation;

[0043] When the annular limiting protrusion is embedded in the pressing ring limiting groove II of the valve core, the air vent hole II of the valve core is completely sealed by the first O-ring, the second O-ring and the valve body, so that the air vent hole II of the valve core is in a closed state. At this time, the air vent hole II of the valve core is in a separate closed state, the air path of the vacuum pump is blocked, and the air path between the suction cup and the vacuum pump is disconnected. At the same time, the air vent hole I of the valve core is not sealed by the first O-ring, the second O-ring and the valve body, and is in communication with the atmosphere. Air enters the suction cup of the vacuum lifting device through the air vent hole I of the valve core, and the suction cup enters the air, and the negative pressure is released.

[0044] During specific installation, first fixedly install the first O-ring installation groove in the first O-ring installation groove, and fixedly install the second O-ring installation groove in the second O-ring installation groove. Then, after installing the spring in the spring limiting groove, embed the pressing ring into the valve body, then penetrate the valve core through the pressing ring and the valve body, and finally put the wire retaining ring on the valve core retaining ring installation groove, and the whole assembly is completed.

[0045] The whole equipment of this application has simple components, low cost, convenient assembly and convenient use, greatly improving the use safety of the vacuum valve.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vacuum valve with a safety lock, characterized in that, It includes a valve core, a valve body and a pressing ring; The valve core includes a valve core seat, a first pressing ring limiting groove of the valve core, a second pressing ring limiting groove of the valve core, a first valve core vent hole, an inner partition of the valve core and a second valve core vent hole arranged in sequence; The valve body includes a pressing ring installation groove, a first O-ring installation groove and a second O-ring installation groove arranged in sequence. A first O-ring is installed in the first O-ring installation groove, and a second O-ring is installed in the second O-ring installation groove; A spring limiting groove is provided at the bottom of the pressing ring, a spring is provided in the spring limiting groove, and a limiting protrusion is provided on the inner wall of the pressing ring; The distance between the first O-ring installation groove and the second O-ring installation groove is greater than the distance between the first valve core vent hole and the second valve core vent hole.

2. The vacuum valve with a safety lock according to claim 1, characterized in that, Internal threads are provided at both ends of the inner wall of the valve core.

3. A vacuum valve with a safety lock according to claim 1, characterized in that, The first O-ring or the second O-ring is made of rubber.

4. A vacuum valve with a safety latch according to claim 1, characterized in that, A valve core retaining ring installation groove and a wire retaining ring are provided on the outer wall of the end of the valve core away from the valve core seat.

5. A vacuum valve with a safety lock according to claim 1, characterized in that, The limiting protrusion is annular.

6. A vacuum valve with a safety lock according to claim 1, characterized in that, The limiting protrusion is provided on the inner wall of the pressing ring close to the valve core seat side.

7. A vacuum valve with a safety lock according to claim 1, characterized in that, The first valve core vent hole or the second valve core vent hole is a row of evenly distributed round holes.

8. A vacuum lifting device, characterized in that, It includes a vacuum valve with a safety lock as described in any one of claims 1 to 7.

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