PH meter protection device

Abstract

The utility model relates to a PH meter protection device which comprises a protection shell with two open ends, the protection shell comprises a first protection sleeve and a second protection sleeve which are coaxially arranged and communicated, and a fixing device used for fixing a PH meter on the protection shell is installed at the end, away from the second protection sleeve, of the first protection sleeve. A plurality of groups of liquid flowing ports are formed in the first protective sleeve in the length direction of the first protective sleeve, each group of liquid flowing ports comprises a plurality of through holes distributed in the circumferential direction of the first protective sleeve, and when the PH meter protective sleeve is used, the PH meter protective sleeve can play a role in protecting a PH meter, so that the service life of the PH meter can be prolonged; and secondly, the measurement accuracy of the PH meter in the use process can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of pH meters, and particularly relates to a protection device for a pH meter. Background Art

[0002] A pH meter is an instrument used to measure the pH value of a solution. As Figure 5 shown in the structural schematic diagram of one type of pH meter in the prior art, the pH meter is composed of a glass electrode head 31, an acid and alkali resistant rod 32, a second flange 33, etc.; currently, during use, sometimes the glass electrode head of the pH meter is vertically inserted into a dynamic solution, such as a solution in a stirring, disturbing, flowing state, etc. for measurement. However, the dynamic solution will impact the pH meter during the flowing process. When the flow rate of the dynamic solution is relatively fast, due to the poor rigidity of the acid and alkali resistant rod and the glass electrode head, it is easy to cause damage to the glass electrode head, and even break the acid and alkali resistant rod severely in serious cases, which will affect the service life of the pH meter. Therefore, there are still drawbacks and deficiencies in the prior art. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a protection device for a pH meter to solve the problems raised in the above background art.

[0004] The technical solution adopted by the utility model to solve the above problems:

[0005] A protection device for a pH meter includes a protective shell with openings at both ends. The protective shell includes a first protective sleeve and a second protective sleeve that are coaxially arranged and connected. One end of the first protective sleeve away from the second protective sleeve is provided with a fixing device for fixing the pH meter in the protective shell, and a plurality of groups of liquid flow ports are arranged along the length direction of the first protective sleeve on the first protective sleeve. Each group of liquid flow ports includes a plurality of through holes distributed circumferentially along the first protective sleeve.

[0006] Further, the fixing device is a first flange fixedly sleeved on the first protective sleeve.

[0007] Further, the fixing device includes two silica gel sheets symmetrically distributed inside the first protective sleeve. Both ends of the silica gel sheet are fixedly connected to the first protective sleeve, and a fixing bolt is arranged between each silica gel sheet and the first protective sleeve. The fixing bolt is threadedly connected to the first protective sleeve and penetrates through the first protective sleeve, and the heads of the fixing bolts are located outside the first protective sleeve.

[0008] Further, the first protective sleeve is a circular tube, the second protective sleeve is a bowl-shaped structure with openings at both ends, and the diameter of the second protective sleeve near the first protective sleeve is larger than the diameter of the other end of the second protective sleeve.

[0009] Further, the protective case is made of stainless steel or Hastelloy.

[0010] Further, the distance between two adjacent liquid flow ports is the same, and a plurality of through holes in each liquid flow port are equidistantly distributed along the circumferential direction of the first protective sleeve.

[0011] Adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0012] When the present utility model is in use, the protective case is sleeved on the pH meter, and the glass electrode head of the pH meter is located in the second protective sleeve. Then, the pH meter is fixed on the protective case through the fixing device. In this way, when using the pH meter to measure the pH value of a dynamic solution, the protective case can be vertically installed in the stirring container, and the glass electrode head is located in the dynamic solution. At this time, since the bottom end of the protective case is open and a plurality of through holes are provided on the first protective sleeve, the dynamic solution can flow in the protective case to ensure the normal use of the pH meter. During the use process, when the flow rate of the dynamic solution is relatively fast, the protective case can reduce the impact force of the dynamic solution on the pH meter, that is, the protective case can protect the pH meter, thereby extending the service life of the pH meter; secondly, since no through holes are provided on the second protective sleeve, the flow rate of the dynamic solution in the second protective sleeve can be reduced, and since the glass electrode head is located in the second protective sleeve during use, the measurement accuracy of the pH meter during use can be ensured. Description of the Drawings

[0013] Figure 1 is one of the structural schematic diagrams of the present utility model;

[0014] Figure 2 is Figure 1 the structural schematic diagram in the top view state;

[0015] Figure 3 is the second structural schematic diagram of the present utility model;

[0016] Figure 4 is Figure 3 the partial enlarged structural schematic diagram at A in

[0017] Figure 5 is the structural schematic diagram of a pH meter with a flange in the prior art.

[0018] Reference numerals: 1, protective case; 11, first protective sleeve; 12, second protective sleeve; 13, through hole; 2, fixing device; 21, first flange; 22, silicone sheet; 23, fixing bolt; 3, pH meter; 31, glass electrode head; 32, acid and alkali resistant rod; 33, second flange. Detailed Embodiments

[0019] To make the objectives, technical solutions, and beneficial effects of the present utility model clearer, the following further describes the embodiments of the present utility model in detail with reference to the drawings.

[0020] As Figures 1 to 4 shown, the present utility model provides a pH meter protection device, which includes a protective shell 1 with openings at both ends. The size of the protective shell 1 is adapted to that of the pH meter 3, that is, the protective shell 1 can be slidably sleeved on the pH meter 3. The protective shell 1 includes a first protective sleeve 11 and a second protective sleeve 12 that are coaxially arranged and communicated with each other, that is, both ends of the first protective sleeve 11 and the second protective sleeve 12 are open. A fixing device 2 for fixing the pH meter 3 on the protective shell 1 is installed at one end of the first protective sleeve 11 away from the second protective sleeve 12. A plurality of groups of liquid flow ports are arranged on the first protective sleeve 11 along the length direction of the first protective sleeve 11. Each group of liquid flow ports includes a plurality of through holes 13 distributed circumferentially along the first protective sleeve 11. Specifically, the positions of the through holes 13 on the first protective sleeve 11 can be arranged arbitrarily, such as staggered distribution, to ensure the strength of the first protective sleeve 11.

[0021] When in use, the protective shell 1 is sleeved on the pH meter 3, and the glass electrode head 31 of the pH meter 3 is located in the second protective sleeve 12. Then, the pH meter 3 is fixed on the protective shell 1 through the fixing device 2. In this way, when using the pH meter 3 to measure the pH value of a dynamic solution, the protective shell 1 can be vertically installed in the stirring container, and the glass electrode head 31 is located in the dynamic solution, and at least one group of liquid flow ports is located above the liquid level of the dynamic solution. The dynamic solution is a solution in a state of stirring, disturbing, flowing, etc. At this time, since the bottom end of the protective shell 1 is open and a plurality of through holes 13 are provided on the first protective sleeve 11, the dynamic solution can flow in the protective shell to ensure the normal use of the pH meter 3. During the use process, when the flow rate of the dynamic solution is relatively fast, the protective shell 1 can reduce the impact force of the dynamic solution on the pH meter 3, that is, the protective shell 1 can protect the pH meter 3, thereby extending the service life of the pH meter 3. Secondly, since no through holes are provided on the second protective sleeve 12, the flow rate of the dynamic solution in the second protective sleeve 12 can be reduced, and since the glass electrode head 31 is located in the second protective sleeve 12 during use, the measurement accuracy of the pH meter 3 during use can be ensured.

[0022] The specific structure of one kind of fixing device 2 is as follows: As Figure 1 shown in Figure 2 shown, the fixing device 2 is a first flange 21 fixedly sleeved on the first protective sleeve 11. At this time, the fixing device 2 can fix the Figure 5The pH meter 3 shown is fixed on the protective housing 1. Specifically, the first flange 21 is adapted to the second flange 33, and the length of the first protective sleeve 11 is adapted to the length of the acid and alkali resistant rod 32. In this way, when the protective housing 1 is sleeved on the pH meter 3, after the first flange 21 abuts against the second flange 33, the glass electrode head 31 can be located within the second protective sleeve 12. Then, after connecting the first flange 21 and the second flange 33 using a bolt connection pair, the pH meter 3 can be fixed on the protective housing 1. The bolt connection pair includes a bolt and a nut, and the bolt connection pair is a commonly used connection method for connecting two flanges in the prior art.

[0023] Since in the prior art, some pH meters 3 do not have flanges, therefore, the specific structure of another fixing device 2 is as follows: As Figure 3 shown in Figure 4 the fixing device 2 includes two silica gel sheets 22 that are symmetrically distributed within the first protective sleeve 11, that is, the two silica gel sheets 22 are located on both sides within the first protective sleeve 11. Both ends of the silica gel sheet 22 are fixedly connected to the first protective sleeve 11, and a fixing bolt 23 is provided between each silica gel sheet 22 and the first protective sleeve 11. The fixing bolt 23 is threadedly connected to the first protective sleeve 11 and penetrates through the first protective sleeve 11. Specifically, the fixing bolt 23 is threadedly connected to the first protective sleeve 11 through a threaded through hole opened on the first protective sleeve 11 and penetrates through the first protective sleeve 11. The heads of the fixing bolts 23 are all located outside the first protective sleeve 11. At this time, when the protective housing 1 is sleeved on the pH meter 3, the glass electrode head 31 can first be located within the second protective sleeve 12, and then the fixing bolts 23 are respectively rotated inward. Since the silica gel sheet 22 can deform under an external force, when the silica gel sheet 22 abuts tightly against the pH meter 3, the pH meter 3 can be fixed on the protective housing 1. And by providing the silica gel sheet 22, during use, it can prevent the fixing bolts 23 from damaging the pH meter 3.

[0024] Furthermore, as Figure 1 shown in Figure 3 the first protective sleeve 11 is a circular tube, and the second protective sleeve 12 is a bowl-shaped structure with both ends open, and the diameter of the second protective sleeve 12 near the first protective sleeve 11 is larger than the diameter of the other end of the second protective sleeve 12. In this way, the protective housing 1 can be adapted to the shape of the existing pH meter 3, so that it can better protect the pH meter 3 during use.

[0025] Furthermore, the protective housing 1 is made of a material with good rigidity and corrosion resistance, such as stainless steel or Hastelloy. The stainless steel material can be 304 stainless steel or 316 stainless steel. In this way, the protective housing 1 can have sufficient rigidity and corrosion resistance to protect the pH meter 3.

[0026] Furthermore, the distance between two adjacent liquid outlets is the same, and a plurality of through holes 13 in each group of liquid outlets are equidistantly distributed along the circumferential direction of the first protective sleeve 11, so that the positions of the through holes 13 on the first protective sleeve 11 are symmetrically distributed. Therefore, when the dynamic solution flows in the first protective sleeve 11 during use, the fluidity is good.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pH meter protection device, characterized in that: The invention comprises a protective shell with openings at both ends, wherein the protective shell comprises a first protective sleeve and a second protective sleeve which are coaxially arranged and connected, a fixing device for fixing the pH meter on the protective shell is installed at one end of the first protective sleeve away from the second protective sleeve, and a plurality of groups of liquid flow ports are opened on the first protective sleeve along the length direction of the first protective sleeve, and each group of liquid flow ports comprises a plurality of through holes distributed along the circumference of the first protective sleeve.

2. A pH meter protection device according to claim 1, characterized in that: The fixing device is a first flange fixedly sleeved on the first protective sleeve.

3. A pH meter protection device according to claim 1, characterized in that: The fixing device includes two silicone sheets located in the first protective sleeve and symmetrically distributed, both ends of the silicone sheets are fixedly connected to the first protective sleeve, and a fixing bolt is arranged between each silicone sheet and the first protective sleeve, the fixing bolt is threadedly connected to the first protective sleeve and passes through the first protective sleeve, and the heads of the fixing bolts are located outside the first protective sleeve.

4. A pH meter protection device according to claim 1, characterized in that: The first protective sleeve is a circular tube, the second protective sleeve is a bowl-shaped structure with two ends open, and the diameter of the second protective sleeve near one end of the first protective sleeve is larger than the diameter of the other end of the second protective sleeve.

5. A pH meter protection device according to claim 1, characterized in that: The protective shell is made of stainless steel or Hastelloy.

6. A pH meter protection device according to claim 1, characterized in that: The intervals between two adjacent groups of liquid flow openings are the same, and a plurality of through holes in each group of liquid flow openings are equidistantly distributed along the circumference of the first protective sleeve.

Images