CN103086310A - Two-stage combination valve of lipid filling - Google Patents

Abstract

The invention belongs to a filling valve applicable to the fields of liquids and fats, and specifically discloses a two-stage composite valve for filling fats. The valve includes an inner valve and an outer valve set outside the inner valve; the inner valve includes Small flow return spring, inner valve upper body, inner valve lower body, inner valve head, the inner valve body is equipped with an inner valve head and a small flow return spring sleeved outside the inner valve head, the top of the inner valve head is fixed on the valve stem Bottom; the outer valve includes the upper body of the outer valve, the lower body of the outer valve, the outer spool (consisting of the upper body of the inner valve and the lower body of the inner valve), a large flow return spring, and the inner valve body is also the outer spool , the outer spool and the large-flow return spring are both sleeved outside the middle of the valve stem, and the large-flow return spring is located on the upper part of the outer spool. The valve has a compact and simple structure, is easy to disassemble and clean, and can adapt to flexible and changeable production modes. When the valve of the present invention is in a small flow rate, the state of the lipid flowing out of the valve body is stable and consistent, and the material is cut off completely and quickly, which can ensure the filling accuracy.

Description

Two-stage composite valve for lipid filling

technical field

The invention belongs to a filling valve applicable to the fields of liquids, fats, etc., and in particular relates to a two-stage composite valve for fat filling which can ensure filling accuracy and stability of weighing filling equipment.

Background technique

At present, there are mainly two types of weighing type lipid filling valve machines in China: split filling machines with large and small valves and two-stage single-valve body filling machines.

Large and small valve split filling machines usually use two large and small valve bodies for filling. When filling, first open the large valve body for large flow filling, then close the large valve body and open the small valve body for subsequent filling. The large valve body The filling ensures the filling speed, and the small valve body filling ensures the filling accuracy and the consistency of material cut-off. Although this filling method can ensure the filling accuracy and the consistency of material cut-off, the structure of the filling machine is complicated, and the filling valve It is inconvenient to disassemble and clean, and cannot adapt to the flexible and changeable filling production requirements.

The two-stage single-valve body filling machine is generally used in the field of liquid filling, and there are many applications in the field of lipid filling, but there are certain defects.

The two-stage single valve body filling valve is mainly composed of a cylinder, a valve stem, an outer valve body and a valve core. Two-stage means that the cylinder drives the valve stem to generate two strokes, so that two flow sections of different sizes are formed between the valve body and the valve core, thereby forming the large and small flow of the filling valve. When the flow rate is large, the flow cross-sectional area of the filling valve outlet is a circle; when the flow rate is small, the flow cross-sectional area of the filling valve outlet is a ring. This kind of filling valve is no problem for liquid filling, but when it is used for lipid filling, when the valve body is in a low flow state, because the flow cross-sectional area of the valve body outlet is a ring, the state when the lipid flows out is unstable , stick to each other, and fall into the product container in pieces of inconsistent size, so it is difficult to ensure the filling accuracy.

Contents of the invention

The purpose of the present invention is to provide a two-stage composite valve for lipid filling. The valve has a compact and simple structure, is easy to disassemble and clean, and can adapt to flexible and changeable production modes. When the valve is in a small flow rate, the state of the lipid outflow valve body is stable. Consistent, complete and rapid cutting, can ensure filling accuracy.

The technical solution to realize the purpose of the present invention: a two-stage composite valve for lipid filling, the valve includes an inner valve and an outer valve sleeved outside the inner valve, and a valve stem is shared between the inner and outer valves; the inner valve includes Small flow return spring, inner valve upper valve body, inner valve lower valve body, inner valve head, the top of the inner valve upper valve body is connected with the bottom of the valve stem, the bottom of the inner valve upper valve body is installed on the inner valve lower valve body, and The two constitute the inner valve body. The inner valve body is equipped with an inner valve head and a small flow return spring sleeved outside the inner valve head. The top of the small flow return spring is pressed against the bottom of the inner valve body, and the top of the inner valve head is connected to the The bottom end of the valve stem; the outer valve includes the cylinder, the cylinder connection seat, the valve stem, the upper valve body of the outer valve, the lower valve body of the outer valve, the outer valve core, and the large flow return spring. The bottom of the cylinder is installed on the top of the cylinder connection seat, and the cylinder connection seat The bottom is installed on the top of the upper valve body of the outer valve, and the bottom of the upper valve body of the outer valve is installed on the top of the lower valve body of the outer valve. The outer valve core is composed of the upper valve body of the inner valve and the lower valve body of the inner valve. Outside the middle of the valve stem, and the large flow return spring is located on the upper part of the outer valve core.

The top of the valve stem is provided with a cylinder capable of driving it to perform linear reciprocating motion, and the top of the valve stem is fixedly connected to the cylinder rod of the cylinder through a valve stem connector.

The upper end of the valve stem connector is threadedly connected with the cylinder rod, and the lower end of the valve stem connector is clamped with the valve stem.

There is a hole at the top center of the upper valve body of the outer valve, and a seal installation sleeve is arranged in the hole; mouth.

A sealing ring is provided between the upper valve body of the outer valve and the sealing ring installation sleeve

A gasket is provided between the upper valve body of the outer valve and the lower valve body of the outer valve.

The beneficial technical effects of the present invention are: (1) When the valve is used for filling fats or sauces, the valve has a compact and simple structure, is easy to disassemble and clean, and adapts to flexible and changeable production modes. (2) For the filling machine composed of the filling valve, in the state of large and small flow rates, the cross-sectional area of the outlet of the filling valve is a closed circle, so that in the state of small flow rate, the state of the material flowing out of the valve body is stable and consistent , The material is cut off completely and quickly, and the filling accuracy can be guaranteed; when the filling machine is used to form an automatic filling line, it can save the weighing repeat inspection station and manual adjustment of the filling level. (3) The inner and outer valves of the valve are designed with return springs. When the cylinder is cut off, the inner and outer valves will automatically reset and close to prevent material leakage during sudden power failure or gas failure, resulting in waste of materials and environmental pollution.

Description of drawings

Fig. 1 is the structural representation of a kind of lipid filling two-stage composite valve provided by the present invention;

Fig. 2 is a schematic structural view of a lipid filling two-stage composite valve provided by the present invention in a high flow state;

Fig. 3 is a schematic structural view of a lipid filling two-stage compound valve in a small flow state provided by the present invention;

Fig. 4 is a schematic structural view of a lipid filling two-stage composite valve in a closed state provided by the present invention.

In the figure: 1. Cylinder, 2. Large flow return spring, 3. Valve stem, 4. Outer valve lower body, 5. Small flow return spring, 6. Inner valve lower body, 7. Inner valve head, 8. Outer valve chamber, 9. Inner valve chamber, 10. Upper valve body of inner valve, 11. Gasket, 12. Upper valve body of outer valve, 13. Spring washer, 14. Sealing ring installation sleeve, 15. Sealing ring, 16. Cylinder connection seat, 17. valve rod connector, 18. cylinder rod.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

As shown in FIG. 1 , the bottom of the cylinder 1 and the cylinder connecting seat 16 are connected by bolts. The bottom of the cylinder connecting seat 16 is connected with the upper valve body 12 of the outer valve by bolts, and the center of the bottom of the cylinder connecting seat 16 has a circular hole to match with the top shoulder of the upper valve body 12 of the outer valve. The cylinder rod 18 of the cylinder 1 passes through the central hole at the top of the cylinder connecting seat 16, the bottom of the cylinder rod 18 is fixedly connected with the top of the valve rod 3 through the valve rod connector 17, and the bottom of the cylinder rod 18 is threadedly connected with the valve rod connector 17, The valve stem connector 17 is clamped and connected with the top of the valve stem 3 .

As shown in Figure 1, the outer filling upper valve body 12 and the cylinder mounting seat 16 are fixedly connected by four bolts, and the connecting part of the two is located outside the valve body of the filling composite valve, and the outer filling upper valve body 12 The top is provided with a circular shoulder to cooperate with the circular hole at the lower end of the cylinder mounting seat 16 for radial positioning. There is a sealing ring installation sleeve 14 between the valve body 12 and the valve stem 3 on the outer valve. The sealing ring installation sleeve 14 is cylindrical with a boss on the top, and the boss on the top of the sealing ring installation sleeve 14 is stuck on the upper valve of the outer valve. In the annular groove at the top of the circular shoulder of the body 12, and the circular shoulder of the valve body 12 on the outer valve and the sealing ring installation sleeve 14 are fixedly connected by bolts. Two upper and lower sealing rings 15 are arranged between the sealing ring installation sleeve 14 and the valve stem 3, and the valve stem sealing ring 15 is a sealing O-ring made of rubber.

As shown in Figure 1, the lower part of the valve stem 3 is covered with an upper valve body 10 of the inner valve, and the groove at the bottom of the upper valve body 10 of the inner valve is stuck outside the boss of the lower part of the valve stem 3; the upper valve body 10 of the inner valve is circular The flange is provided with a boss on the outside of the bottom and a stepped circular hole inside. The large flow return spring 2 is sleeved on the outside of the valve stem 3, and is located between the bottom end of the circular shoulder on the top of the upper valve body 12 of the outer valve and the top of the upper valve body 10 of the inner valve. The top of the large flow return spring 2 is stuck in the groove at the bottom of the top circular shoulder of the upper valve body 12 on the outer valve, and the top of the large flow return spring 2 is installed with the bottom end of the circular shoulder on the top of the upper valve body 12 and the sealing ring A spring washer 13 is provided between the bottom of the sleeve 14 . The bottom of the large flow return spring 2 presses the top of the valve body 10 on the inner valve. The boss at the bottom of the upper valve body 10 of the inner valve is fixedly connected with the lower valve body 6 of the inner valve by bolts to form an inner valve body, which is also an outer valve core. The lower valve body 6 of the inner valve is a U-shaped cylinder.

As shown in FIG. 1 , the inner valve head 7 is sleeved outside the bottom end of the valve stem 3 , and the two are fixedly connected by threads. The middle part of the inner valve head 7 is provided with a boss, and the small flow return spring 5 is set outside the inner valve head 7, and the top of the small flow return spring 5 is located at the lower part of the upper valve body 10 of the inner valve, and the bottom of the small flow return spring 5 is located at the inner valve head. 7 on the boss top. Both the inner valve head 7 and the small flow return spring 5 are located in the inner valve body.

As shown in Figure 1, the lower end of the upper valve body 12 of the outer valve is cylindrical, and one side of the lower valve body 12 middle part of the outer valve is provided with a feed port A communicating with the inside thereof, and the feed port A is cylindrical, and It is welded with the upper valve body 12 of the outer valve. The lower part of the upper valve body 12 of the outer valve is provided with a boss. The bottom of the upper valve body 12 of the outer valve is covered with the lower valve body 4 of the outer valve, and the two are fixedly connected by threads, and a sealing ring is arranged between the boss on the lower part of the upper valve body 12 of the outer valve and the top of the lower valve body 4 of the outer valve. 11. The sealing ring 11 is a polytetrafluoro sealing gasket. The lower valve body 4 of the outer valve is a U-shaped cylinder, and the bottom of the lower valve body 4 of the outer valve is provided with a discharge port B matching the outer shape of the lower valve body 6 of the inner valve.

As shown in Figure 1, the valve stem 3, the small flow return spring 5, the upper valve body 10 of the inner valve, the lower body 6 of the inner valve, and the inner valve head 7 constitute an internal small filling valve, and the inner valve cavity 9 is a small filling valve. valve cavity. The valve stem 3, the upper valve body 12 of the outer valve, the sealing ring installation sleeve 14, the lower valve body 4 of the outer valve, the large flow return spring 2 and the outer valve core constitute an external large filling valve, and the outer valve cavity 8 is a large filling valve. Valve cavity. The two valves are sleeved together inside and outside to form the two-stage composite valve.

When the cylinder drives the inner valve body and the inner valve head 7 in two stages, the large and small flows shown in Fig. 2 and Fig. 3 are formed.

As shown in Figure 1 and Figure 2, when the cylinder rod 18 is fully retracted, the valve stem 3 moves upward, the small flow return spring 5 is compressed first, the upper valve body 10 of the inner valve is lifted by the valve stem, and then the large flow return spring 2 is pressed The upper valve body 10 of the inner valve is compressed, and the lower port of the lower valve body 4 of the outer valve is fully opened to form a large flow.

As shown in Figure 1 and Figure 3, when the cylinder rod 18 stretches out halfway (the cylinder 1 is opened one level), the valve rod 3 moves downward, the compressed large-flow return spring 2 is released, and the lower valve body 6 of the inner valve moves the outer The lower opening of the lower valve body 4 is sealed, and the inner valve cavity 9 communicates with the outside of the valve through the lower opening of the inner valve lower valve body 6 to form a small flow.

As shown in Figure 1 and Figure 4, when the cylinder rod 18 is fully stretched out (the cylinder 1 is opened in two stages), the valve rod 3 continues to move downward, the compressed small flow return spring 5 is released, and the inner valve head 7 moves the inner valve The lower opening of the lower valve body 6 is sealed, and the filling valve is closed.

As shown in Figures 1 and 2, when the valve body is in a state of high flow rate, the lower circular opening of the lower valve body 4 of the outer valve is fully opened, and the outflowing material is cylindrical. As shown in Figure 1 and Figure 3, when the valve body is in a low flow state, the round opening at the lower part of the lower valve body 4 of the outer valve is sealed, and the round opening at the lower part of the lower valve body 6 of the inner valve is fully opened, and the outflowing material is a small cylinder Shape, so the flow cross-sectional area of the outlet of the filling valve is a closed circle when the flow rate is large or small.

When the cylinder drives the inner valve head 7, a small flow rate is formed as shown in Figure 3. The flow cross-sectional area of the outlet of the filling valve is a closed circle, not a ring, so when the flow rate is small, the state of the material flowing out of the valve body is stable. Consistent, complete and rapid cutting, can ensure filling accuracy. As shown in Figure 1 and Figure 4, the inner and outer valves are designed with return springs. When the cylinder is cut off, the inner and outer valves will automatically reset and close to prevent material leakage when the power or air is cut off suddenly.

The present invention has been described in detail above in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the above-mentioned embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. kind of change. The content that is not described in detail in the present invention can adopt the prior art.

Claims (6)

1. A two-stage composite valve for lipid filling, characterized in that: the valve comprises an inner valve and an outer valve sleeved outside the inner valve, and a valve stem (3) is shared between the inner and outer valves; the inner valve Including small flow return spring (5), inner valve upper body (10), inner valve lower body (6), inner valve head (7), top of inner valve upper body (10) and bottom of valve stem (3) Fitting connection, the bottom of the upper valve body (10) of the inner valve is installed on the lower valve body (6) of the inner valve, and the two constitute the inner valve body, and the inner valve body is provided with an inner valve head (7) and a sleeve inner valve head ( 7) Outer small flow return spring (5), the top of the small flow return spring (5) presses the bottom of the valve body (10) on the inner valve, and the top of the inner valve head (7) is connected to the bottom of the valve stem (3) The outer valve includes a cylinder (1), a cylinder connection seat (16), a valve stem (3), an upper valve body (12) of the outer valve, a lower valve body (4) of the outer valve, an outer valve core, and a large flow return spring (2 ), the bottom of the cylinder (1) is installed on the top of the cylinder connecting seat (16), the bottom of the cylinder connecting seat (16) is installed on the top of the upper valve body (12) of the outer valve, and the bottom of the upper valve body (12) of the outer valve is installed on the lower valve body of the outer valve (4) At the top, the outer valve core is composed of the upper valve body (10) of the inner valve and the lower valve body (6) of the inner valve. The outer valve core and the large flow return spring (2) are both sleeved outside the middle part of the valve stem (3). And the large flow return spring (2) is located on the top of the outer spool. 2. A two-stage composite valve for lipid filling according to claim 1, characterized in that: the top of the valve stem (3) is provided with a cylinder (1) capable of driving it to perform linear reciprocating motion, and the valve stem (3) The top end is fixedly connected with the cylinder rod (18) of the cylinder (1) through a valve stem connector (17). 3. A two-stage composite valve for lipid filling according to claim 2, characterized in that: the upper end of the valve stem connector (17) is threadedly connected to the cylinder rod (18), and the valve stem connector (17) ) and the lower end of the stem (3) are clipped. 4. A two-stage composite valve for lipid filling according to claim 1, 2 or 3, characterized in that: a hole is opened in the center of the top of the valve body (12) on the outer valve, and a hole is arranged in the hole The seal installation sleeve (14); the middle part of the upper valve body (12) of the outer valve is provided with a feed port (A) communicating with the inside thereof, and the bottom of the lower valve body (4) of the outer valve is provided with a discharge port (B). 5. A two-stage compound valve for lipid filling according to claim 4, characterized in that: a sealing ring ( 15). 6. A two-stage composite valve for lipid filling according to claim 5, characterized in that: a sealing gasket is provided between the upper valve body (12) of the outer valve and the lower valve body (4) of the outer valve (11). the

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