Improved refrigeration valve

Abstract

The utility model relates to the technical field of electromagnetic valves, and discloses an improved refrigeration valve which comprises a valve body, a seal head is fixed at one end of the valve body, the other end of the valve body is inserted and fixed on a valve seat in a sleeved mode, and an air inlet pipe and an air outlet pipe are connected to the valve seat. A valve element is connected into the valve body in a sleeved mode. A radially-through ventilation sinking groove is formed in the end face, facing the valve element, of the end socket; an annular counter bore is formed in the end face, facing the valve element, of the end socket, and the ventilation sinking groove penetrates through the outer end opening portion of the annular counter bore. The ventilation sinking groove and the annular sinking groove are formed in the end socket, so that the combination area between the end socket and the valve element and the adsorption force between the end socket and the valve element can be effectively reduced, it can be accurately guaranteed that the spring can enable the valve element to be powered off and reset, and the sensitivity of the refrigeration valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to an improved refrigeration valve. Background Art

[0002] Solenoid valves are basic automation components used to control fluids. According to the working medium, they can be divided into hydraulic solenoid valves and pneumatic solenoid valves. Pneumatic solenoid valves are often used in refrigeration equipment to control the on and off of airflow pipelines or to change the flow direction of compressed air. In existing refrigeration valves, since the refrigerant flows through the inside of the refrigeration valve, the joint surfaces of the valve core and the head are flat when the power is off, and due to the presence of refrigerant and corresponding lubricating oil, the adsorption force between the valve core and the head is large, and the elastic force of the spring between the valve core and the head is difficult to overcome the adsorption force between the valve core and the head, so that the valve core cannot be reset, resulting in insensitivity of the refrigeration valve. Utility Model Content

[0003] The utility model aims to provide an improved refrigeration valve, which can effectively reduce the joint area between the head and the valve core and the adsorption force between the two by arranging a ventilation groove and an annular groove on the head, and can accurately ensure that the spring can reset the valve core when the power is off, thereby improving the sensitivity of the refrigeration valve.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] An improved refrigeration valve comprises a valve body, one end of which is fixed with a sealing head, the other end of which is inserted into and fixed on a valve seat, an air inlet pipe and an air outlet pipe are connected to the valve seat; a valve core is sleeved in the valve body; a radially penetrating ventilation groove is formed on the end surface of the sealing head facing the valve core.

[0006] By arranging a ventilation groove on the head, the contact area between the head and the end face of the valve core during adsorption can be reduced. At the same time, ventilation is provided in the middle of the joint between the head and the valve core during the ventilation groove, which can greatly reduce the adsorption force between the two. This ensures that when the solenoid valve is powered off, the valve core can be supported by the spring through the action of the spring, ensuring that it can be accurately reset, thereby improving the sensitivity of the valve.

[0007] The utility model is further configured as follows: an annular countersunk hole is formed on the end surface of the sealing head facing the valve core, and the ventilation countersunk groove passes through the outer end portion of the annular countersunk hole;

[0008] A magnetic separation ring is fixed in the annular countersunk hole.

[0009] Through the above technical scheme, the annular countersunk hole and the ventilation countersunk groove are connected, which can further reduce the contact area between the head and the valve core, and the joint can be further divided into multiple small pieces, thereby further reducing the adsorption force of the head on the valve core, thereby ensuring the sensitivity of the valve core.

[0010] The utility model is further configured as follows: the outer end surface of the magnetic separation ring is not higher than the bottom of the ventilation sink groove.

[0011] The utility model is further configured as follows: the cross section of the ventilation sink is in a triangular shape.

[0012] The utility model is further configured as follows: the annular countersunk hole is configured to be small on the outside and large on the inside.

[0013] The utility model is further configured as follows: the cross section of the annular countersunk hole is in the shape of a right-angled trapezoid;

[0014] The inner side wall of the annular countersunk hole is inclined inwards.

[0015] Through the above technical solution, the magnetic separation ring has a certain degree of elasticity, and the installation stability of the magnetic separation ring can be improved by setting the inner wall of the annular countersunk hole inward.

[0016] The utility model is further configured as follows: the outer ends of the air inlet pipe and the air outlet pipe are respectively sleeved with a sealing cover, and the sealing cover is formed with an outer edge protrusion.

[0017] The outer edge protrusion can be provided to facilitate the removal of the sealing cover.

[0018] The outstanding effects of the utility model are:

[0019] Compared with the prior art, by arranging ventilation grooves and annular grooves on the head, the bonding area between the head and the valve core and the adsorption force between the two can be effectively reduced, which can accurately ensure that the spring can reset the valve core when the power is off, thereby improving the sensitivity of the refrigeration valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a structural schematic diagram of the head of the utility model;

[0022] Figure 3 for Figure 1 A partial enlarged view of A.

[0023] Reference numerals: 10, valve body;

[0024] 20. Head; 21. Magnetic ring;

[0025] 201, ventilation sink; 202, annular sink hole; 2021, inner wall;

[0026] 30. Valve seat; 31. Air inlet pipe; 32. Air outlet pipe; 33. Sealing cover; 331. Outer edge protrusion;

[0027] 40. Valve core. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] The following references Figures 1 to 3 The utility model is described as follows:

[0030] An improved refrigeration valve comprises a valve body 10, a sealing head 20 is fixed at one end of the valve body 10, the other end of the valve body 10 is inserted and fixed on a valve seat 30, and an air inlet pipe 31 and an air outlet pipe 32 are connected to the valve seat 30; a valve core 40 is sleeved in the valve body 10; a radially penetrating ventilation groove 201 is formed on the end face of the sealing head 20 facing the valve core 40.

[0031] By arranging a ventilation groove on the head, the contact area between the head and the end face of the valve core during adsorption can be reduced. At the same time, ventilation is provided in the middle of the joint between the head and the valve core during the ventilation groove, which can greatly reduce the adsorption force between the two. This ensures that when the solenoid valve is powered off, the valve core can be supported by the spring through the action of the spring, ensuring that it can be accurately reset, thereby improving the sensitivity of the valve.

[0032] An annular countersunk hole 202 is formed on the end surface of the sealing head 20 facing the valve core 40, and the ventilation groove 201 passes through the outer end portion of the annular countersunk hole 202;

[0033] A magnetic separation ring 21 is fixed in the annular counterbore 202 .

[0034] The annular countersunk hole and the ventilation countersunk groove are connected, which can further reduce the contact area between the head and the valve core, and can further divide the joint into multiple small pieces, thereby further reducing the adsorption force of the head on the valve core, thereby ensuring the sensitivity of the valve core.

[0035] The outer end surface of the magnetic separation ring 21 is not higher than the bottom of the ventilation sink 201.

[0036] The cross section of the ventilation sink 201 is triangular.

[0037] The annular countersunk hole 202 is configured to be small on the outside and large on the inside.

[0038] The cross section of the annular countersunk hole 202 is in the shape of a right-angled trapezoid;

[0039] The inner side wall 2021 of the annular counterbore 202 is inclined inwardly.

[0040] Through the above technical solution, the magnetic separation ring has a certain degree of elasticity, and the installation stability of the magnetic separation ring can be improved by setting the inner wall of the annular countersunk hole inward.

[0041] The outer ends of the air inlet pipe 31 and the air outlet pipe 32 are respectively sleeved with a sealing cover 33 , and the sealing cover 33 is formed with an outer edge protrusion 331 .

[0042] The outer edge protrusion can be provided to facilitate the removal of the sealing cover.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. An improved refrigeration valve, comprising a valve body (10), a sealing head (20) being fixed at one end of the valve body (10), the other end of the valve body (10) being inserted into and fixed on a valve seat (30), an air inlet pipe (31) and an air outlet pipe (32) being connected to the valve seat (30); a valve core (40) being sleeved inside the valve body (10); the characteristics are: A radially penetrating ventilation groove (201) is formed on the end surface of the sealing head (20) facing the valve core (40).

2. An improved refrigeration valve according to claim 1, characterized in that: An annular countersunk hole (202) is formed on the end surface of the sealing head (20) facing the valve core (40), and the ventilation groove (201) penetrates the outer end portion of the annular countersunk hole (202); A magnetic separation ring (21) is fixed in the annular countersunk hole (202).

3. An improved refrigeration valve according to claim 2, characterized in that: The outer end surface of the magnetic separation ring (21) is not higher than the bottom of the ventilation sink groove (201).

4. The improved refrigeration valve according to claim 1, characterized in that: The cross section of the ventilation sink (201) is triangular.

5. The improved refrigeration valve according to claim 2, characterized in that: The annular countersunk hole (202) is arranged to be small on the outside and large on the inside.

6. An improved refrigeration valve according to claim 5, characterized in that: The cross section of the annular countersunk hole (202) is in the shape of a right-angled trapezoid; The inner side wall (2021) of the annular countersunk hole (202) is arranged to be inclined inwards.

7. The improved refrigeration valve according to claim 1, characterized in that: The outer ends of the air inlet pipe (31) and the air outlet pipe (32) are respectively sleeved with a sealing cover (33), and the sealing cover (33) is formed with an outer edge protrusion (331).

Images