Plunger pump cylinder spline quenching equipment

Abstract

The utility model discloses plunger pump cylinder spline quenching equipment, and particularly relates to the technical field of quenching, which comprises a cooling liquid storage tank, a bearing tray, a pressing plate, a fixed pipe and a spray head, a first through hole is formed in the bottom of the cooling liquid storage tank, the pressing plate is installed on the inner wall of the bottom of the cooling liquid storage tank and provided with a second through hole, a water pressure balancing device is installed on the upper surface of the pressing plate, a water inlet hole of the water pressure balancing device is communicated with the second through hole, and the bottom of the fixing pipe is installed at a water outlet hole of the water pressure balancing device. The spray head is installed at the top of the fixing pipe, the bearing tray is arranged at the top of the cooling liquid storage tank, and a round hole is formed in the upper surface of the bearing tray. The spline quenching device supports simultaneous quenching of splines of a plurality of cylinder bodies to be quenched, and can adjust the quenching quantity each time as required, so that the production efficiency is improved; and through the water pressure adjusting device, it is guaranteed that the flow and pressure of cooling liquid sprayed out of the fixing pipes at different positions are roughly the same, and it is guaranteed that each spline is cooled evenly.

Description

Technical Field

[0001] The utility model relates to the technical field of quenching, and more specifically, to a plunger pump cylinder spline quenching device. Background Art

[0002] It is known that spline transmission is a type of mechanical transmission that can transmit mechanical torque; and as an important component of mechanical connection, the mechanical properties of spline will directly affect the reliability and service life of the entire system; therefore, in order to meet different application scenarios, spline needs to have high strength, good fatigue resistance, high surface hardness and wear resistance; the commonly used treatment methods for splines are quenching; quenching is a heat treatment process in which steel is heated to above the critical temperature, kept warm for a period of time, and then rapidly cooled at a cooling rate greater than the critical cooling rate to undergo martensite or bainite transformation; combined with tempering treatment at different temperatures, it will greatly improve the mechanical properties of steel such as strength, fatigue strength, toughness and wear resistance; existing quenching devices usually achieve the purpose of rapid cooling by immersing the metal material in coolant for a period of time.

[0003] However, in actual use, since the cylinder splines of the plunger pump are usually made of copper-steel bimetallic casting, the copper alloy is in liquid during quenching, so it is difficult to immerse the cylinder splines directly in the coolant; if the cylinder splines are treated by nitriding or high-frequency treatment, on the one hand, the process and cost are increased and the production efficiency is reduced; on the other hand, the quenching depth of nitriding or high-frequency treatment is small; therefore, a plunger pump cylinder spline quenching equipment is proposed as a further improvement. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present utility model provides a plunger pump cylinder spline quenching device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a plunger pump cylinder spline quenching device, the quenching device comprising: a coolant storage tank, a carrying tray, a pressing plate, a fixing pipe and a nozzle;

[0006] The bottom of the coolant water storage tank is provided with a plurality of evenly distributed first through holes, the pressing plate is fixedly mounted on the inner wall of the bottom of the coolant water storage tank, the pressing plate is provided with second through holes corresponding to the first through holes, a water pressure balancing device is fixedly mounted on the upper surface of the pressing plate, and the water inlet hole of the water pressure balancing device is connected to the corresponding second through hole, the bottom of the fixed pipe is fixedly mounted on the water outlet hole of the water pressure balancing device, the nozzle is fixedly mounted on the top of the fixed pipe, the carrying tray is arranged on the top of the coolant water storage tank, and the upper surface of the carrying tray is provided with a circular hole corresponding to the nozzle;

[0007] The cylinder body to be quenched is placed flat on the circular hole, and the spline of the cylinder body to be quenched is located below the upper plane of the carrying tray and inside the circular hole;

[0008] A cooling liquid circulation mechanism is provided outside the cooling liquid storage tank.

[0009] Furthermore, the cooling liquid circulation mechanism includes: a chiller, an external water storage tank and a water pump;

[0010] The external water tank is connected to the chiller and the water pump through water pipes respectively. A water inlet pipe corresponding to the first through hole is fixedly installed at the bottom of the coolant water tank, and a water outlet pipe is fixedly installed on the side of the coolant water tank. The other end of the water inlet pipe is connected to the water pump, and the other end of the water outlet pipe is connected to the chiller.

[0011] Furthermore, a rubber ring is fixedly installed between the pressure plate and the bottom surface of the coolant water storage tank, and the rubber ring is located between the first through hole and the second through hole.

[0012] Furthermore, positioning holes are provided at the four corners of the inner wall of the bottom of the coolant water storage tank, and the four corners of the carrying tray are fixedly mounted on the corresponding positioning holes through support rods.

[0013] Furthermore, the pressing plate is fixedly mounted on the bottom of the coolant reservoir by means of fixing bars and screws.

[0014] Furthermore, a spiral channel is provided inside the nozzle, and an end of the spiral channel is chamfered.

[0015] Furthermore, at least a temperature sensor and a water level sensor are installed on the inner wall of the coolant storage tank.

[0016] Technical effects and advantages of this utility model:

[0017] (1) The quenching equipment supports quenching of multiple cylinder splines to be quenched at the same time, and the number of quenchings per time can be adjusted as needed, thereby improving production efficiency;

[0018] (2) The water pressure regulating device can ensure that the coolant flow rate and pressure sprayed from the fixed pipes at different positions are roughly the same, ensuring that the splines of each cylinder to be quenched are cooled evenly;

[0019] (3) The quenching equipment sprays the coolant in the form of water mist onto the spline surface of the cylinder to be quenched, ensuring the uniformity of cooling and avoiding the uneven hardness of the spline of a single cylinder to be quenched;

[0020] (4) The quenching equipment can be used in conjunction with the casting equipment of the cylinder body to be quenched. When the casting of the cylinder body to be quenched is completed, the spline quenching of the cylinder body to be quenched can be performed immediately, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a three-dimensional partial cross-sectional structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0023] Figure 3 This is a schematic structural diagram of the coolant storage tank of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the pressing plate of the utility model.

[0025] Figure 5 It is a structural diagram of the nozzle of the utility model.

[0026] Figure 6 This is a schematic diagram of the coolant circulation mechanism of the present invention.

[0027] The accompanying drawings are:

[0028] 1. Coolant reservoir;

[0029] 11. First through hole; 12. Water inlet pipe; 13. Water outlet pipe; 14. Rubber ring; 15. Positioning hole;

[0030] 2. Carrying tray; 21. Circular hole; 22. Support rod;

[0031] 3. Pressing plate; 31. Second through hole; 32. Fixing bar; 33. Screw;

[0032] 4. Fixed pipe;

[0033] 5. Nozzle; 51. Spiral channel; 52. Chamfer;

[0034] 6. Water pressure balancing device;

[0035] 7. Coolant circulation mechanism; 71. Chiller; 72. External water storage tank; 73. Water pump;

[0036] 8. Cylinder body to be quenched; 9. Spline. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] As attached Figure 1-6The quenching equipment for the spline of a plunger pump cylinder shown in the figure comprises: a coolant reservoir 1, a carrying tray 2, a pressing plate 3, a fixing pipe 4 and a nozzle 5;

[0039] The bottom of the coolant reservoir 1 is provided with a plurality of evenly distributed first through holes 11. The pressing plate 3 is fixedly mounted on the inner wall of the bottom of the coolant reservoir 1. The pressing plate 3 is provided with second through holes 31 corresponding to the first through holes 11.

[0040] The number of the first through holes 11 on the coolant reservoir 1 and the second through holes 31 on the pressing plate 3 can be dynamically adjusted according to the number of quenching operations required;

[0041] A water pressure balancing device 6 is fixedly mounted on the upper surface of the pressure plate 3, and the water inlet of the water pressure balancing device 6 is connected to the corresponding second through hole 31. The bottom of the fixed pipe 4 is fixedly mounted on the water outlet of the water pressure balancing device 6, and the nozzle 5 is fixedly mounted on the top of the fixed pipe 4.

[0042] Among them, the embodiment:

[0043] The connection between the fixed pipe 4 and the water outlet of the water pressure balancing device 6 is connected by threaded tightening, and the fixed pipe 4 is a stainless steel pipe; wherein, the water pressure balancing device 6 is equivalent to a small water reservoir: the coolant is not directly sprayed out from the second through hole 31 of the pressure plate 3, but first enters the interior of the water pressure balancing device 6 from the water inlet hole of the water pressure balancing device 6. After the coolant fills the water pressure balancing device 6, it is sprayed out from the water outlet of the water pressure balancing device 6 along the fixed pipe 4, and the top of the fixed pipe 4 is screwed on with a stainless steel atomizing nozzle 5 by threaded fitting.

[0044] The carrying tray 2 is arranged on the top of the coolant reservoir 1, and a circular hole 21 corresponding to the nozzle 5 is opened on the upper surface of the carrying tray 2;

[0045] The cylinder body 8 to be quenched is placed flat on the circular hole 21 , and the spline 9 of the cylinder body 8 to be quenched is located below the upper plane of the carrying tray 2 and inside the circular hole 21 ;

[0046] A coolant circulation mechanism 7 is provided outside the coolant reservoir 1 .

[0047] In a preferred embodiment, as shown in the attached Figure 1-6 As shown, the coolant circulation mechanism 7 includes: a chiller 71, an external water storage tank 72 and a water pump 73;

[0048] The external water tank 72 is connected to the chiller 71 and the water pump 73 through water pipes respectively. A water inlet pipe 12 corresponding to the first through hole 11 is fixedly installed at the bottom of the coolant water tank 1, and a water outlet pipe 13 is fixedly installed on the side of the coolant water tank 1. The other end of the water inlet pipe 12 is connected to the water pump 73, and the other end of the water outlet pipe 13 is connected to the chiller 71.

[0049] The water pump 73 extracts the coolant from the external water tank 72 and delivers it to the coolant reservoir 1 through the water inlet pipe 12, while the chiller 71 extracts the coolant from the coolant reservoir 1 through the water outlet pipe 13, thereby realizing the recycling of the coolant.

[0050] In a preferred embodiment, as shown in the attached Figure 1-6 As shown, a rubber ring 14 is fixedly installed between the pressure plate 3 and the bottom surface of the coolant water storage tank 1, and the rubber ring 14 is located between the first through hole 11 and the second through hole 31; so that the rubber ring 14 can prevent the cooling water from seeping out from between the bottom of the coolant water storage tank 1 and the pressure plate 3, and avoid unstable water pressure at some of the first through hole 11 and the second through hole 31.

[0051] In a preferred embodiment, as shown in the attached Figure 1-6 As shown, positioning holes 15 are opened at the four corners of the bottom inner wall of the coolant storage tank 1, and the four corners of the carrying tray 2 are fixedly installed on the corresponding positioning holes 15 through support rods 22.

[0052] Among them, the support rod 22 is fixedly placed above the coolant reservoir 1 through the positioning hole 15, and then the support rod 22 plays a supporting and fixing role for the carrying tray 2;

[0053] In a preferred embodiment, as shown in the attached Figure 1-6 As shown, the pressure plate 3 is fixedly mounted on the bottom of the coolant reservoir 1 by means of a fixing bar 32 and screws 33 ; so that the tightened screws 33 press the fixing bar 32 against the pressure plate 3 .

[0054] In a preferred embodiment, as shown in the attached Figure 1-6 As shown, a spiral channel 51 is provided inside the nozzle 5 , and a chamfer 52 is provided at the end of the spiral channel 51 .

[0055] Among them, there is a spiral channel 51 inside the nozzle 5 and a 30° chamfer 52 at the outlet; when the coolant is sprayed out through the nozzle 5, it forms a conical angle and is atomized; using the chamfer 52, the coolant sprayed out of the nozzle 5 is in a conical angle and acts evenly on the spline 9 of the cylinder body 8 to be quenched in an atomized manner, thereby quenching it; and because the carrying tray 2 and the water tank 1 storing the carrying tray 2 block the lasing phenomenon of the coolant on the surface of the workpiece, safety is improved.

[0056] In a preferred embodiment, as shown in the attached Figure 1-6 As shown, at least a temperature sensor and a water level sensor are installed on the inner wall of the coolant storage tank 1.

[0057] When the water level sensor detects that the water level in the coolant reservoir 1 reaches a specified value, the coolant in the coolant reservoir 1 is pumped out by the chiller 71. The water temperature in the coolant reservoir 1 is monitored by the temperature sensor. The coolant is cooled to a specified value and then stored in the external water tank 72. This measure can avoid the phenomenon of poor quenching effect caused by the increase of water temperature due to continuous quenching.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plunger pump cylinder spline quenching equipment, characterized by: The quenching equipment comprises: a cooling liquid storage tank (1), a carrying tray (2), a pressing plate (3), a fixing pipe (4) and a nozzle (5); The bottom of the coolant water storage tank (1) is provided with a plurality of evenly distributed first through holes (11); the pressure plate (3) is fixedly mounted on the inner wall of the bottom of the coolant water storage tank (1); the pressure plate (3) is provided with a second through hole (31) corresponding to the first through hole (11); the upper surface of the pressure plate (3) is fixedly mounted with a water pressure balancing device (6); and the water inlet of the water pressure balancing device (6) is connected to the corresponding second through hole (31); the bottom of the fixed pipe (4) is fixedly mounted on the water outlet of the water pressure balancing device (6); the nozzle (5) is fixedly mounted on the top of the fixed pipe (4); the supporting tray (2) is arranged on the top of the coolant water storage tank (1); and the upper surface of the supporting tray (2) is provided with a circular hole (21) corresponding to the nozzle (5); The cylinder body (8) to be quenched is placed flat on the circular hole (21), and the spline (9) of the cylinder body (8) to be quenched is located below the upper plane of the carrying tray (2) and inside the circular hole (21); A cooling liquid circulation mechanism (7) is provided outside the cooling liquid storage tank (1).

2. The plunger pump cylinder spline quenching equipment according to claim 1, characterized in that: The cooling liquid circulation mechanism (7) comprises: a water chiller (71), an external water storage tank (72) and a water pump (73); The external water storage tank (72) is connected to the chiller (71) and the water pump (73) through water pipes, respectively; a water inlet pipe (12) corresponding to the first through hole (11) is fixedly installed at the bottom of the cooling liquid water storage tank (1); a water outlet pipe (13) is fixedly installed on the side of the cooling liquid water storage tank (1); the other end of the water inlet pipe (12) is connected to the water pump (73), and the other end of the water outlet pipe (13) is connected to the chiller (71).

3. The plunger pump cylinder spline quenching equipment according to claim 1, characterized in that: A rubber ring (14) is fixedly installed between the pressure plate (3) and the bottom surface inside the coolant reservoir (1), and the rubber ring (14) is located between the first through hole (11) and the second through hole (31).

4. The plunger pump cylinder spline quenching equipment according to claim 1, characterized in that: Positioning holes (15) are provided at the four corners of the inner wall of the bottom of the coolant storage tank (1), and the four corners of the carrying tray (2) are fixedly mounted on the corresponding positioning holes (15) through support rods (22).

5. The plunger pump cylinder spline quenching equipment according to claim 1, characterized in that: The pressing plate (3) is fixedly mounted on the bottom of the coolant reservoir (1) via a fixing horizontal bar (32) and screws (33).

6. The plunger pump cylinder spline quenching equipment according to claim 1, characterized in that: A spiral channel (51) is provided inside the nozzle (5), and a chamfer (52) is provided at the end of the spiral channel (51).

7. The plunger pump cylinder spline quenching equipment according to claim 1, characterized in that: At least a temperature sensor and a water level sensor are installed on the inner wall of the coolant water storage tank (1).

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