Pneumatic pinch valve of vacuum excrement collector

Abstract

The utility model discloses a pneumatic pinch valve of a vacuum excrement collector, which belongs to the technical field of valves and comprises a main valve body, the main valve body provides a mounting space for a valve core, the main valve body consists of a metal end cover and a plastic valve body, and honeycomb-shaped raised lines are formed on the surface of the plastic valve body. The metal end covers are installed on the end faces of the two ends of the plastic valve body and wrap the plastic valve body. The valve body structure is in a honeycomb shape, so that the valve body achieves high structural strength under the condition that the wall thickness is small, strength failure caused by bubbles generated due to the fact that the wall thickness is too large in the plastic injection molding process is effectively avoided, and meanwhile the problem that the strength is insufficient due to the fact that the wall thickness is too small is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a pneumatic pinch valve for a vacuum toilet collection tank. Background Art

[0002] A vacuum toilet is a type of toilet that uses the pressure difference generated by the flushing system to suck away the dirt in the toilet in the form of air suction, so as to reduce the use of flushing water. The pneumatic pinch valve is one of the accessories of the vacuum toilet.

[0003] Pinch valves are usually made of metal for their valve bodies. Although such a structure meets the strength requirements, the pinch valve is heavy and cannot meet the special requirements of light weight and high strength for transportation vehicles such as airplanes, trains, and cars. For this reason, we propose a pneumatic pinch valve for vacuum toilets. Utility Model Content

[0004] The utility model aims to provide a pneumatic pinch valve for a vacuum toilet collection tank to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic pinch valve for a vacuum toilet collector, comprising:

[0006] The valve body provides an installation space for the valve core. The valve body is composed of a metal end cover and a plastic valve body, and a honeycomb convex strip is formed on the surface of the plastic valve body. The metal end cover is installed on both end faces of the plastic valve body and wraps the plastic valve body.

[0007] Furthermore, the radial cross-section of the pinch valve is elliptical.

[0008] Furthermore, the metal gas nozzle is solidified on the plastic valve body by injection molding.

[0009] Furthermore, the metal end cover and the plastic valve body are connected by fasteners, and the fasteners include end cover screws and end cover nuts.

[0010] Furthermore, the end cover screws are injection-molded and embedded.

[0011] Furthermore, the end cover screw and the end cover nut are coaxial.

[0012] Furthermore, the metal end cover is made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Use plastic as the main material of the valve body to reduce weight and meet the special requirements of light weight and high strength on transportation vehicles such as airplanes, trains, and cars.

[0015] 2. Add metal materials to make up for the insufficient strength of plastic materials.

[0016] 3. The metal material is made of stainless steel, which better enhances the corrosion resistance of the pinch valve and has a wider range of applications.

[0017] 4. The valve body adopts honeycomb structure, which makes the valve body have high structural strength with small wall thickness, effectively avoiding the strength failure caused by bubbles generated by excessive wall thickness during plastic injection molding, and at the same time solves the problem of insufficient strength caused by too small wall thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a front view of the utility model;

[0021] Figure 3 It is a three-dimensional diagram from another perspective of the utility model.

[0022] In the figure: 100, valve body; 101, metal end cover; 102, plastic valve body; 1021, honeycomb convex strip; 201, metal air nozzle; 301, fastener. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-Figure 3 The utility model proposes a technical solution: a vacuum toilet collector pneumatic pinch valve, comprising: a valve body 100, a metal air nozzle 201 and a fastener 301, wherein the radial cross section of the pinch valve is an ellipse;

[0025] The valve body 100 provides an installation space for the valve core. The valve body 100 is composed of a metal end cover 101 and a plastic valve body 102, and a honeycomb convex strip 1021 is formed on the surface of the plastic valve body 102. The valve body structure adopts a honeycomb shape, so that the valve body can achieve a high structural strength with a small wall thickness, effectively avoiding the strength failure caused by bubbles generated during the plastic injection molding process due to excessive wall thickness, and at the same time solves the problem of insufficient strength due to small wall thickness. The metal end cover 101 is installed on the end faces of the plastic valve body 102 and wraps the plastic valve body 102. The metal end cover 101 and the plastic valve body 102 are connected by fasteners 301. Plastic material is used as the main material of the valve body to reduce weight and meet the special requirements of light weight and high strength on transportation vehicles such as airplanes, trains, and cars. Metal materials are added to make up for the insufficient strength of plastic materials.

[0026] Specifically, the metal gas nozzle 201 is solidified on the plastic valve body 102 by injection molding, and the material of the metal gas nozzle 201 is stainless steel or copper.

[0027] Specifically, the fastener 301 includes an end cover screw and an end cover nut. The end cover screw is injection-molded and embedded, and the end cover screw and the end cover nut are coaxial.

[0028] Specifically, the metal end cover 101 is made of stainless steel, which better enhances the corrosion resistance of the pinch valve and has a wider range of applications.

[0029] The working principle and use process of the utility model are as follows: the metal end cover 101 and the plastic valve body 102 are fixed by the end cover screws and the end cover nuts, and then the pinch valve is installed in the pipeline of the corresponding vacuum toilet collection tank, and the air pipe is connected to the metal air nozzle 201. The fluid is cut off by injecting air into the pinch valve to squeeze the valve core, otherwise the fluid can flow.

[0030] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A pneumatic pinch valve for a vacuum toilet, characterized in that: include: A valve body (100), wherein the valve body (100) provides an installation space for a valve core, the valve body (100) is composed of a metal end cover (101) and a plastic valve body (102), and a honeycomb-shaped convex strip (1021) is formed on the surface of the plastic valve body (102), and the metal end cover (101) is installed on both end surfaces of the plastic valve body (102) and wraps the plastic valve body (102).

2. A pneumatic pinch valve for a vacuum toilet according to claim 1, characterized in that: The radial cross section of the pinch valve is elliptical.

3. A pneumatic pinch valve for a vacuum toilet according to claim 1, characterized in that: The metal gas nozzle (201) is solidified on the plastic valve body (102) by injection molding.

4. A pneumatic pinch valve for a vacuum toilet according to claim 1, characterized in that: The metal end cover (101) and the plastic valve body (102) are connected via a fastener (301), wherein the fastener (301) comprises an end cover screw and an end cover nut.

5. A pneumatic pinch valve for a vacuum toilet according to claim 4, characterized in that: The end cover screws are injection molded and embedded.

6. A pneumatic pinch valve for a vacuum toilet according to claim 5, characterized in that: The end cover screw and the end cover nut are coaxial.

7. The pneumatic pinch valve for a vacuum toilet according to claim 1, characterized in that: The metal end cover (101) is made of stainless steel.

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