Anti-freezing piston type water pump

Abstract

The utility model discloses an anti-freezing piston type water pump which mainly comprises an operating rod, a piston rod, a piston, a one-way valve A, a one-way valve B, a water outlet pipe, a shaft and a water inlet pipe. The piston type water pump is characterized in that the two one-way valves are provided with vertically-penetrating small holes, in the normal working process, the whole system is kept communicated with the atmosphere through the small holes, and due to the fact that the small holes are small enough and the water surface descends slowly, the piston type water pump cannot instantly lose the working capacity in the using process; after the piston type water pump stops working, the water surface in the shaft can fall back to the underground water level within a certain time, and the piston type water pump is prevented from being frozen due to the fact that the outdoor air temperature is lower than 0 DEG C in winter. The piston type water pump has the advantages that the product cost is low, the unpowered automatic anti-freezing function of the piston type water pump can be achieved originally, and the piston type water pump is suitable for rural left-behind old people families; meanwhile, the working principle of the piston type water pump is popular and easy to understand and master, and large-scale application and popularization in rural areas using the piston type water pump in cold regions are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of water supply, and specifically relates to an antifreeze piston type water pump. Background Art

[0002] In rural areas where piston pumps are generally used, when a piston pump fails, it will directly lead to water outages at home, affecting life; and the most serious failure of a piston pump is that the wellbore and pipes are frozen and cracked due to failure to release water in time in winter. In mild cases, the piston pump needs to be replaced, and in severe cases, the foundation pit needs to be dug to the groundwater to replace the water inlet pipe; the former requires about two or three days of water outage, and the latter requires construction when the ground thaws in spring, and the water outage time is longer. People often forget to drain the water from their household piston pumps in winter, which often causes the piston pumps to be frozen and cracked; therefore, it is necessary to transform the traditional piston pumps to achieve automatic antifreeze function while minimizing costs.

[0003] The utility model mainly utilizes the common small faults of traditional piston pumps, and does the opposite. In winter, this fault is specially designed to be utilized, and the disadvantages are turned into advantages, so as to achieve the purpose of antifreeze of traditional piston pumps. This common small fault of piston pumps is: when the piston pump is not in use, the water level in the wellbore of the piston pump slowly drops under the action of atmospheric pressure due to the lax sealing of the two pistons, which eventually leads to the phenomenon that the piston pump temporarily loses the water-drawing function, which leads to the need to refill the "well" with water when it is used next time to restore its normal use function. In winter, the use of piston pumps requires "well drawing" every time, which is not labor-intensive and will not bring additional burden to people; moreover, in rural areas without running water in cold northern regions, every household is equipped with a water tank, and it is not necessary to use a piston pump to draw water every day. Therefore, compared with the situation of forgetting to drain the piston pump, which leads to the consequences of freezing and cracking the piston pump, it is acceptable to use the piston pump several times in winter. The utility model is a slight modification of common equipment in rural areas, which is easy to accept and master, and can also be used for preliminary maintenance without additional labor costs. Utility Model Content

[0004] Aiming at rural areas that have no running water supply and use piston water pumps to draw water, the utility model provides an antifreeze piston water pump, the purpose of which is to help the left-behind elderly in these rural areas avoid the situation where they forget to drain the household piston water pump in winter due to memory loss and cause freezing and cracking.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an antifreeze piston type water pump, mainly comprising a joystick (01), a piston rod (02), a piston (03), a one-way valve A (04), a one-way valve B (05), a water outlet pipe (06), a wellbore (07), and a water inlet pipe (08).

[0006] The utility model discloses an antifreeze piston type water pump, wherein the operating rod (01) and the piston rod (02) are movably connected.

[0007] The utility model discloses an antifreeze piston type water pump, wherein the piston rod (02) and the piston (03) are fixedly connected.

[0008] The utility model discloses an antifreeze piston type water pump, wherein one side of the one-way valve A (04) is fixed on the piston (03), and the valve opening faces upward.

[0009] The utility model discloses an antifreeze piston type water pump, wherein one side of the one-way valve B (05) is fixed on the water inlet pipe (08), and the valve opening faces upward.

[0010] The utility model discloses an antifreeze piston type water pump, wherein the piston rod (02), the piston (03), the one-way valve A (04) and the one-way valve B (05) are arranged in a wellbore (07).

[0011] The utility model discloses an antifreeze piston type water pump, wherein the water outlet pipe (06) is arranged at the upper part of the wellbore (07) with the pipe opening facing downwards.

[0012] The utility model discloses an antifreeze piston type water pump, wherein the upper end of the water inlet pipe (08) is connected to the bottom of the wellbore, and the lower end is inserted into the underground aquifer.

[0013] The utility model discloses an antifreeze piston type water pump, wherein the one-way valve A (04) and the one-way valve B (05) are provided with small holes penetrating vertically.

[0014] The utility model discloses an antifreeze piston type water pump, wherein the working conditions are divided into two types: a standby condition and a use condition.

[0015] The antifreeze piston pump described in the utility model is in a standby state that occupies most of the time. In the standby state, there is no free water surface in the entire wellbore, and the free water surface is level with the groundwater surface. The utility model is in a temporary inoperable state, but its use function can be restored at any time by "diverting the well".

[0016] The antifreeze piston pump described in the utility model works when there is a demand for water. At this time, it is necessary to "draw the well" first, that is, fill the wellbore with water first, and then work is continuously performed on the operating rod (01) by hand, and the operating rod (01) drives the piston rod (02) and the piston (03) to move up and down repeatedly, and the one-way valve A (04) and the one-way valve B (05) are alternately opened and closed to gradually extract the air in the water inlet pipe (08). Under the action of atmospheric pressure, the water level in the water inlet pipe (08) gradually rises. When the water level reaches the height in the wellbore (07) and is greater than the height of the one-way valve B (05), the utility model can play its role and manually extract groundwater.

[0017] The antifreeze piston pump described in the utility model can automatically release water through a simple principle to achieve the antifreeze function without manual operation. The main implementation method is to artificially destroy the air tightness of the traditional piston pump through the small holes on the one-way valve A (04) and the one-way valve B (05), so that it presents a "fault" state understood by people from beginning to end. This "fault" makes it impossible for the traditional piston pump to ensure that the free water surface in the wellbore is constant, that is, it is impossible to ensure that the traditional piston pump maintains a working condition for a long continuous time. However, if the small hole on the one-way valve is reasonably designed, it can ensure that the water level of the piston pump wellbore steadily decreases within a certain period of time, so that the piston pump will not immediately return to the standby state. Generally, rural people in the north use buckets to carry water to the kitchen water tank, and one cycle is about 1 minute. If the size of the small hole is reasonably designed, the water level in the wellbore (07) will fall back to the bottom of the wellbore (07) in 5 minutes, that is, the piston pump will return to the standby state, which can meet the continuous use requirements of the piston pump in a short period of time, and will not cause the wellbore (07) and the water inlet pipe (08) above the ground to freeze (the groundwater temperature is generally greater than 5°C).

[0018] The antifreeze piston pump described in the utility model has a small hole design on the one-way valve A (04) and the one-way valve B (05) as the technical core of the utility model, but it is not a sophisticated core technology, but only a modification of the existing water-taking equipment in rural areas. For the one-way valve A (04) and the one-way valve B (05), farmers can set up two sets respectively, and only replace the one-way valve with a small hole in winter, and use a one-way valve with good airtightness in the rest of the time. In this way, the antifreeze effect of the piston pump in winter when the water consumption is small is achieved, and the piston pumping well will not be frequently out of function during the spring, summer and autumn when the water consumption is large, which is the best of both worlds. People who have lived in rural areas for a long time are basically familiar with the replacement of the one-way valve, which will not cause any inconvenience.

[0019] Although there are a large number of rural water-taking facilities on the market, most of them are energy-consuming, large investment compared to the income and expenditure of rural people, and require specialized personnel for maintenance. These characteristics do not meet the basic needs of the majority of rural people and will also cause waste of resources. Therefore, in light of the actual situation, it is in line with the development needs to optimize and transform the rural water-taking facilities on the original basis. The utility model has this feature, and its beneficial effects are: it does not change the traditional water-using habits of rural people, almost does not increase investment, does not bring economic burden to rural people, does not waste resources, and rural people, especially the elderly in northern rural areas, are happy to accept it.

[0020] The antifreeze piston water pump described in the utility model is particularly suitable for cold areas in northern rural areas where piston water pumps are used to draw water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a work flow chart of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model;

[0023] Figure 3 It is the working principle diagram of the utility model;

[0024] Figure 4 This is a large-scale drawing of the core part of the water supply of the utility model;

[0025] In the figure, (01) operating lever; (02) piston rod; (03) piston; (04) one-way valve A; (05) one-way valve B; (06) water outlet pipe; (07) wellbore; (08) water inlet pipe. DETAILED DESCRIPTION

[0026] The utility model provides an antifreeze piston type water pump. In order to make the purpose, technical scheme and use effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings.

[0027] See also Figure 2 and Figure 3 and Figure 4 The present example provides an antifreeze piston water pump, which mainly comprises a control rod (01), a piston rod (02), a piston (03), a one-way valve A (04), a one-way valve B (05), a water outlet pipe (06), a wellbore (07), and a water inlet pipe (08).

[0028] See also Figure 2 and Figure 3 and Figure 4 In this example, the joystick (01) and the piston rod (02) are movably connected, the straight length L of the piston rod (01) is 1000 mm, and the material is cast iron.

[0029] See also Figure 2 and Figure 3 and Figure 4 In this example, the piston rod (02) and the piston (03) are fixedly connected, the piston (03) is in close contact with the inner wall of the wellbore (07), and the piston (03) is made of rubber.

[0030] See also Figure 2 and Figure 3 and Figure 4 In this example, one side of the one-way valve A (04) is fixed on the piston (03), and the valve opening faces upward. The one-way valve A (04) is square, and the side length L is 50 mm. The one-way valve A (04) is made of hard plastic.

[0031] See also Figure 2 and Figure 3 and Figure 4 In this example, one side of the one-way valve B (05) is fixed on the water inlet pipe (08), the valve opening is upward, the one-way valve B (05) is square, the side length L is 50mm, and the one-way valve B (05) is made of hard plastic.

[0032] See also Figure 2 and Figure 3 and Figure 4 In this example, the piston rod (02), the piston (03), the one-way valve A (04), and the one-way valve B (05) are arranged in the wellbore (07). The wellbore is circular, made of cast iron, with an inner diameter D of 200 mm and a height H of 800 mm.

[0033] See also Figure 2 and Figure 3 and Figure 4 In this example, the water outlet pipe (06) is arranged at the upper part of the wellbore (07), is integrally connected with the wellbore (07), is made of the same material, has a downwardly facing pipe opening, and has a pipe diameter D of 50 mm.

[0034] See also Figure 2 and Figure 3 and Figure 4 In this example, the upper end of the water inlet pipe (08) is connected to the bottom of the wellbore, and the lower end is inserted into the underground aquifer. The pipe diameter D is 80 mm, and the water inlet pipe is made of seamless steel pipe.

[0035] See also Figure 2 and Figure 3 and Figure 4 In this example, the one-way valve A (04) and the one-way valve B (05) are provided with small holes running vertically, and the diameter of the small holes is 8 mm.

[0036] See also Figure 1 and Figure 2 and Figure 3 ,The working conditions of this example are divided into two types: standby state and use state.

[0037] In this example, the standby state occupies most of the time. In the standby state, there is no free water surface in the entire wellbore, and the free water surface is level with the groundwater surface. The utility model is in a temporary inoperable state, but its use function can be restored at any time by "diverting the well".

[0038] In this example, the working condition occurs when there is a demand for water. At this time, it is necessary to "draw the well" first, that is, fill the wellbore with water first, and then continuously work on the joystick (01) by hand, and the joystick (01) drives the piston rod (02) and the piston (03) to move up and down repeatedly, and the one-way valve A (04) and the one-way valve B (05) are alternately opened and closed, and the air in the water inlet pipe (08) is gradually extracted. Under the action of atmospheric pressure, the water level in the water inlet pipe (08) gradually rises. When the water level reaches the wellbore (07) and is greater than the height of the one-way valve B (05), the utility model can play its role and manually operate to extract groundwater.

[0039] In this example, water can be automatically released through a simple principle to achieve the anti-freezing function without manual operation. The main implementation method is to artificially destroy the air tightness of the traditional piston pump through the small holes on the one-way valve A (04) and the one-way valve B (05), so that it presents a "fault" state that people understand from beginning to end. This "fault" makes it impossible for the traditional piston pump to ensure that the free water surface in the wellbore is constant, that is, it is impossible to ensure that the traditional piston pump maintains a working condition for a long continuous time. However, if the small hole on the one-way valve is reasonably designed, it can ensure that the water level in the piston pump wellbore steadily decreases within a certain period of time, so that the piston pump will not immediately return to the standby state. Generally, rural people in the north use buckets to carry water to the kitchen water tank, and one cycle is about 1 minute. If the size of the small hole is reasonably designed, the water level in the wellbore (07) will fall back to the bottom of the wellbore (07) in 5 minutes, that is, the piston pump will return to the standby state, which can meet the continuous use requirements of the piston pump in a short period of time, and will not cause the wellbore (07) and the water inlet pipe (08) above the ground to freeze (the groundwater temperature is generally greater than 5°C).

[0040] Combined with the data given in this example, the diameter of the small hole in the one-way valve A (04) and the one-way valve B (05) is calculated using the variable head non-constant flow water container emptying calculation formula. The formula is as follows:

[0041]

[0042] Where: d------aperture diameter (m),

[0043] D------Wellbore (07) inner diameter (m),

[0044] H------Net height of water level in the wellbore (m),

[0045] T'----Time (s) for draining water from the wellbore (07).

[0046] Bring in the data and get:

[0047]

[0048] d≈8.1×10 -3 (m) = 8.1 mm.

[0049] In this example, it is reasonable to set the diameter of the small holes of the one-way valve A (04) and the one-way valve B (05) to 8 mm, which can ensure that there is water in the wellbore (07) for about 5 minutes (300 seconds).

[0050] In this example, the small hole design on the one-way valve A (04) and the one-way valve B (05) is the technical core of the utility model, but it is not a sophisticated core technology, but just a modification of the existing rural water-taking equipment. For the one-way valve A (04) and the one-way valve B (05), farmers can set up two sets respectively, and only replace the one-way valve with small holes in winter, and use the one-way valve with good sealing performance in the rest of the time. In this way, the piston pump can be protected from freezing in winter when the water consumption is small, and the piston pumping well will not be frequently out of function during the spring, summer and autumn when the water consumption is large, which is the best of both worlds. People who have lived in rural areas for a long time are basically familiar with the replacement of one-way valves, and it will not cause inconvenience.

[0051] This example does not change the traditional water use habits of rural people, hardly increases investment, does not bring economic burden to rural people, and does not cause waste of resources. Rural people, especially the elderly in rural areas in the north, are happy to accept it. It is especially suitable for cold areas in rural areas in the north where piston pumps are used to draw water.

[0052] It is understandable that practitioners in this field can make equivalent substitutions or changes based on the technical solution and concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. An antifreeze piston water pump, mainly comprising a joystick (01), a piston rod (02), a piston (03), a one-way valve A (04), a one-way valve B (05), a water outlet pipe (06), a wellbore (07), and a water inlet pipe (08); characterized in that: The operating rod (01) and the piston rod (02) are movably connected, and the piston rod (02) and the piston (03) are fixedly connected; one side of the one-way valve A (04) is fixed on the piston (03), and the valve opening is upward; one side of the one-way valve B (05) is fixed on the water inlet pipe (08), and the valve opening is upward; The piston rod (02), the piston (03), the one-way valve A (04) and the one-way valve B (05) are arranged in the wellbore (07); the water outlet pipe (06) is arranged at the upper part of the wellbore (07) with the pipe mouth facing downward; the upper end of the water inlet pipe (08) is connected to the bottom of the wellbore and the lower end is inserted into the underground aquifer.

2. The antifreeze piston pump according to claim 1, characterized in that: The one-way valve A (04) and the one-way valve B (05) are provided with small holes penetrating vertically.

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