Connecting valve special for cooling and heating coupling of solar heat pump

Abstract

The utility model discloses a special connecting valve for cooling and heating coupling of a solar heat pump, which belongs to the technical field of valves and comprises a valve body and a valve cover. According to the utility model, the sealing mechanism, the gland, the stuffing box and the stuffing are arranged, and the stuffing is polytetrafluoroethylene (PTFE), has excellent chemical stability, corrosion resistance, sealing performance, high lubrication non-stick performance and good anti-aging endurance and corrosion resistance, shows inertness to most chemicals and solvents, can resist strong acid, strong alkali, water and various organic solvents, and can be used for sealing the packing box. The sealing surface of the valve clack and the sealing surface of the valve seat adopt a conical surface sealing mode, the reducing force is large, the sealing effect is good, and therefore the sealing performance of the sealing surface of the valve clack and the sealing surface of the valve seat can be further guaranteed, and the sealing performance of the sealing surface of the valve clack and the sealing surface of the valve seat can be further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a special connection valve for cooling and heating coupling of a solar heat pump. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc.

[0003] Valves are control components in fluid delivery systems and have functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shut-off valves to the various valves used in extremely complex automatic control systems.

[0004] During the use of the valve, the safety of the valve is particularly important. If the sealing performance is weak, the liquid in the solar heat pump heating and cooling coupling will flow out, thus causing unnecessary accidents, affecting normal use, wasting time, energy and money on repairs, etc.

[0005] To this end, the present application proposes a special connection valve for the cooling and heating coupling of a solar heat pump. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a special connecting valve for the cold and warm coupling of a solar heat pump, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology; by setting a sealing mechanism, a pressure cover, a stuffing box and a stuffing, the stuffing is polytetrafluoroethylene (PTFE) with excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, and good anti-aging resistance, corrosion resistance, inertness to most chemicals and solvents, resistance to strong acids and alkalis, water and various organic solvents, good weather resistance, the best aging life among plastics, high lubricity, the lowest friction coefficient among solid materials, non-adhesion, the smallest surface tension among solid materials, and no adhesion to any substance. In addition, the valve disc and the valve seat sealing surface adopt a conical sealing form, which has the advantages of large reduction force and good sealing effect, and therefore, further ensures its sealing performance.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special connection valve for solar heat pump heating and cooling coupling, comprising a valve body and a valve cover, wherein the valve body and the valve cover are fixedly connected, a valve stem is rotatably connected inside the valve cover, a sealing mechanism is arranged inside the valve cover, and the sealing mechanism comprises a pressure cover, which is arranged inside the valve cover and located outside the valve stem, a stuffing box is arranged inside the pressure cover, and packings are arranged inside the pressure cover and on the upper and lower sides of the stuffing box.

[0008] As a preferred technical solution of the utility model, a valve seat is arranged inside the valve body, a valve flap is fixedly connected to the bottom end of the valve stem and located inside the valve body, and the valve flap is located above the valve seat;

[0009] By arranging the valve disc and the valve seat, the sealing surfaces of the valve disc and the valve seat adopt a conical surface sealing form, which has the advantages of large reduction force and good sealing effect.

[0010] As a preferred technical solution of the utility model, a thread is arranged on the outside of the valve stem and located inside the valve cover, and a hand wheel is fixedly connected to the top of the valve stem and located above the valve cover;

[0011] By turning the hand wheel, the valve stem is rotated, and the thread setting makes the valve stem move up and down in the valve cover, thereby driving the valve disc to achieve the opening and closing effect.

[0012] As a preferred technical solution of the utility model, one end of the valve body is fixedly connected to a first connector, and one end of the valve body away from the first connector is fixedly connected to a second connector;

[0013] By setting the first connecting head and the second connecting head, the material is cast steel, which is stronger than cast iron and has better high temperature resistance and corrosion resistance.

[0014] As a preferred technical solution of the utility model, a gasket 1 and a gasket 2 are both arranged inside the first connector and the second connector, and the gasket 1 and the gasket 2 are fixedly connected;

[0015] By providing the gasket 1 and the gasket 2, after the first connector and the second connector are connected, the internal sealing is strengthened and the sealing degree is further ensured.

[0016] As a preferred technical solution of the utility model, the first connector and the second connector are both fixedly connected with a connecting flange at one end away from the valve body, and the two connecting flanges are used to connect with the flange on the using device;

[0017] By setting the connecting flange, the flange connection is suitable for occasions with medium load or high sealing requirements.

[0018] The beneficial effects of the utility model are as follows: by setting a sealing mechanism, a gland, a stuffing box and a stuffing, the stuffing is polytetrafluoroethylene (PTFE) with excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, electrical insulation and good anti-aging endurance, high temperature resistance, and an operating temperature of 250°C, low temperature resistance, and good mechanical toughness at low temperatures. Even if the temperature drops to -196°C, it can still maintain an elongation of 5%, corrosion resistance, inertness to most chemicals and solvents, resistance to strong acids and alkalis, water and various organic solvents, good weather resistance, the best aging life among plastics, high lubricity, the lowest friction coefficient among solid materials, no adhesion, the smallest surface tension among solid materials, and no adhesion to any substance.

[0019] The utility model provides a valve flap and a valve seat, and the sealing surfaces of the valve flap and the valve seat adopt a conical surface sealing form, which has the advantages of large reduction force and good sealing effect, and therefore further ensures its sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main body of the utility model;

[0021] Figure 2 It is an internal schematic diagram of the utility model;

[0022] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0023] In the figure: 1. valve body; 2. valve cover; 3. valve stem; 4. valve disc; 5. valve seat; 6. thread; 7. hand wheel; 8. first connector; 9. second connector; 10. gasket 1; 11. gasket 2; 12. connecting flange; 13. sealing mechanism; 131. gland; 132. stuffing box; 133. stuffing. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] See also Figure 1 - Figure 3 A special connection valve for solar heat pump cooling and heating coupling includes a valve body 1 and a valve cover 2. The valve body 1 and the valve cover 2 are fixedly connected, and a valve stem 3 is rotatably connected inside the valve cover 2.

[0027] The valve cover 2 is provided with a sealing mechanism 13 inside, the sealing mechanism 13 includes a gland 131, the gland 131 is provided inside the valve cover 2 and outside the valve stem 3, a stuffing box 132 is provided inside the gland 131, and packings 133 are provided inside the gland 131 and on the upper and lower sides of the stuffing box 132; by providing the sealing mechanism 13, the gland 131, the stuffing box 132 and the stuffing 133, the stuffing 133 is made of polytetrafluoroethylene (PTFE) and has excellent chemical stability, corrosion resistance, sealing, high lubricity and non-corrosiveness. It has good viscosity, electrical insulation and good anti-aging resistance. It is resistant to high temperatures, with an operating temperature of 250°C. It is resistant to low temperatures, has good mechanical toughness at low temperatures, and can maintain an elongation of 5% even when the temperature drops to -196°C. It is corrosion-resistant and inert to most chemicals and solvents. It is resistant to strong acids and alkalis, water and various organic solvents. It has good weather resistance and the best aging life among plastics. It is highly lubricating and has the lowest friction coefficient among solid materials. It is non-adhesive and has the smallest surface tension among solid materials. It does not adhere to any substance.

[0028] A valve seat 5 is provided inside the valve body 1, and a valve flap 4 is fixedly connected to the bottom end of the valve stem 3 and located inside the valve body 1, and the valve flap 4 is located above the valve seat 5; by arranging the valve flap 4 and the valve seat 5, the sealing surfaces of the valve flap 4 and the valve seat 5 adopt a conical surface sealing form, which has the advantages of large reduction force and good sealing effect.

[0029] A thread 6 is provided on the outside of the valve stem 3 and located inside the valve cover 2, and a hand wheel 7 is fixedly connected to the top of the valve stem 3 and located above the valve cover 2; by turning the hand wheel 7, the valve stem 3 is caused to rotate, and the setting of the thread 6 enables the valve stem 3 to move up and down in the valve cover 2, thereby driving the valve disc 4 to achieve an opening and closing effect.

[0030] One end of the valve body 1 is fixedly connected to a first connecting head 8, and the end of the valve body 1 away from the first connecting head 8 is fixedly connected to a second connecting head 9; by setting the first connecting head 8 and the second connecting head 9, the material is cast steel, which is stronger than cast iron and has better high temperature resistance and corrosion resistance.

[0031] Gasket 10 and gasket 2 11 are both provided inside the first connector 8 and the second connector 9, and gasket 10 and gasket 2 11 are fixedly connected. By providing gasket 10 and gasket 2 11, after the first connector 8 and the second connector 9 are connected, the internal sealing is strengthened to further ensure the sealing degree.

[0032] The first connector 8 and the second connector 9 are fixedly connected with a connecting flange 12 at one end away from the valve body 1, and the two connecting flanges 12 are used to connect with the flanges on the using device; by setting the connecting flanges 12, the flange connection is suitable for medium loads or occasions with high sealing requirements.

[0033] Working principle: by setting the sealing mechanism 13, the pressure cover 131, the stuffing box 132 and the stuffing 133, the stuffing 133 is polytetrafluoroethylene (PTFE) with excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, electrical insulation and good anti-aging resistance, high temperature resistance, working temperature up to 250°C, low temperature resistance, good mechanical toughness at low temperature, even if the temperature drops to -196°C, it can maintain 5% elongation, corrosion resistance, inertness to most chemicals and solvents, resistant to strong acids and alkalis, water and various organic solvents, good weather resistance, the best aging life among plastics, high lubricity, the lowest friction coefficient among solid materials, non-adhesion, the smallest surface tension among solid materials, and no adhesion to any substance.

[0034] By arranging the valve flap 4 and the valve seat 5, the sealing surfaces of the valve flap 4 and the valve seat 5 adopt a conical surface sealing form, which has the advantages of large reduction force and good sealing effect.

[0035] By turning the hand wheel 7, the valve stem 3 is caused to rotate, and the arrangement of the thread 6 enables the valve stem 3 to move up and down in the valve cover 2, thereby driving the valve disc 4 to achieve an opening and closing effect.

[0036] By setting the first connecting head 8 and the second connecting head 9, the material is cast steel, which is stronger than cast iron and has better high temperature resistance and corrosion resistance.

[0037] By providing the gasket 10 and the gasket 2 11, after the first connector 8 and the second connector 9 are connected, the internal sealing is strengthened to further ensure the sealing degree.

[0038] By providing the connection flange 12, the flange connection is suitable for occasions with medium load or high sealing requirements.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A special connection valve for solar heat pump cooling and heating coupling, comprising a valve body (1) and a valve cover (2), characterized in that: The valve body (1) and the valve cover (2) are fixedly connected, the valve stem (3) is rotatably connected inside the valve cover (2), a sealing mechanism (13) is arranged inside the valve cover (2), and the sealing mechanism (13) includes a gland (131), the gland (131) is arranged inside the valve cover (2) and outside the valve stem (3), a stuffing box (132) is arranged inside the gland (131), and packings (133) are arranged inside the gland (131) and on the upper and lower sides of the stuffing box (132).

2. A solar heat pump cooling and heating coupling special connection valve according to claim 1, characterized in that: A valve seat (5) is arranged inside the valve body (1), a valve flap (4) is fixedly connected to the bottom end of the valve stem (3) and located inside the valve body (1), and the valve flap (4) is located above the valve seat (5).

3. A special connection valve for solar heat pump cooling and heating coupling according to claim 1, characterized in that: A thread (6) is provided on the outside of the valve stem (3) and located inside the valve cover (2), and a hand wheel (7) is fixedly connected to the top of the valve stem (3) and located above the valve cover (2).

4. A solar heat pump cooling and heating coupling special connection valve according to claim 1, characterized in that: One end of the valve body (1) is fixedly connected to a first connector (8), and one end of the valve body (1) away from the first connector (8) is fixedly connected to a second connector (9).

5. A special connection valve for solar heat pump cooling and heating coupling according to claim 4, characterized in that: Gasket 1 (10) and gasket 2 (11) are both arranged inside the first connecting head (8) and the second connecting head (9), and the gasket 1 (10) and gasket 2 (11) are fixedly connected.

6. A solar heat pump cooling and heating coupling special connection valve according to claim 4, characterized in that: The first connecting head (8) and the second connecting head (9) are both fixedly connected to a connecting flange (12) at one end away from the valve body (1), and the two connecting flanges (12) are used to be connected to flanges on a use device.

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